Vacuum heat treatment furnace for tubular parts

Abstract

The utility model discloses a vacuum heat treatment furnace for tubular parts, which relates to the field of vacuum heat treatment furnaces and comprises a bottom plate. A furnace body is installed on the bottom plate, a U-shaped cavity is formed in the wall of the furnace body, a heating cylinder is installed in the center of the interior of the furnace body, a cavity is formed in the heating cylinder, electric heating pipes are arranged in the U-shaped cavity and the cavity, and a furnace door is movably installed on one side of the furnace body. A plurality of positioning assemblies used for fixing a heating pipe are installed on the furnace door, a driving assembly used for driving the positioning assemblies to rotate is installed in the furnace door, and the problems that when an existing vacuum heat treatment furnace is used for treating tubular parts, the tubular parts are directly placed in the furnace, the tubular parts make contact with one another, and the heating effect is poor are effectively solved. Therefore, the parts cannot be uniformly heated, and a better surface treatment effect is difficult to achieve.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heat treatment furnaces, specifically a vacuum heat treatment furnace for tubular parts. Background Technology

[0002] Vacuum heat treatment is a comprehensive technology combining vacuum technology and heat treatment, referring to a heat treatment process that is carried out entirely or partially under vacuum conditions. Vacuum heat treatment furnaces have high thermal efficiency, enabling rapid heating and cooling, and can achieve oxidation-free, decarburization-free, and carburization-free processes. They can remove phosphorus scale from the surface of workpieces and also have degreasing and degassing effects, thereby achieving a bright and clean surface finish.

[0003] However, existing vacuum heat treatment furnaces place tubular parts directly inside the furnace when processing them, resulting in contact between the parts. Consequently, the parts cannot be heated evenly, making it difficult to achieve a good surface treatment effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vacuum heat treatment furnace for tubular parts, which solves the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum heat treatment furnace for tubular parts, comprising a base plate; a furnace body is mounted on the base plate, a U-shaped cavity is formed in the wall of the furnace body, a heating cylinder is installed at the center of the furnace body, a cavity is formed inside the heating cylinder, and electric heating tubes are provided in both the U-shaped cavity and the cavity; a furnace door is movably mounted on one side of the furnace body, a plurality of positioning components for fixing the heating tubes are mounted on the furnace door, and a driving component for driving the plurality of positioning components to rotate is installed inside the furnace door.

[0006] Preferably, the positioning component includes clamping plates, and several pairs of fixing plates are rotatably mounted on the inner wall of the furnace door in a circular array, with the clamping plates hinged to the fixing plates.

[0007] Preferably, the drive assembly includes a first motor, a gear is rotatably installed inside the furnace door, a gear cavity is opened inside the furnace door, a first gear ring is rotatably installed inside the gear cavity, the inner and outer rings of the first gear ring are provided with teeth, the outer teeth of the first gear ring mesh with the gear, a plurality of second gear rings are rotatably installed in a circular array inside the gear cavity, the plurality of second gear rings mesh with the inner teeth of the first gear rings, and a plurality of fixed plates are fixedly connected to the plurality of second gear rings.

[0008] Preferably, an mounting plate is installed on the furnace door, and a plurality of positioning posts are installed on the mounting plate, with a plurality of second gear rings rotatably mounted on the plurality of positioning posts.

[0009] Preferably, a slide rail is provided on one side of the base plate, a threaded rod is rotatably installed in the slide rail, a slider is screwed onto the threaded rod, the slider is slidably installed in the slide rail, a rotating seat is rotatably installed on the slider, and the furnace door is fixedly connected to the rotating seat.

[0010] Preferably, a second motor for driving the threaded rod to rotate is mounted on the base plate.

[0011] Beneficial effects

[0012] This utility model provides a vacuum heat treatment furnace for tubular parts, which has the following advantages:

[0013] 1. The furnace body can be installed on the base plate. The parts can be placed in the furnace body for heating. The U-shaped cavity and the hollow cavity can be used to install heating tubes to heat the parts. The furnace body is equipped with a heating cylinder and a furnace door. The furnace door can be moved to move the positioning component and the tubular parts. The positioning component can fix the tubular parts. The drive component can be activated to drive the positioning component to rotate, thereby driving the tubular parts to rotate, so that the tubular parts can be heated evenly and achieve a better surface treatment effect.

[0014] 2. The first motor is installed and started, which drives the gear to rotate. The gear cavity is provided, allowing the first gear ring and the second gear ring to rotate inside. The first gear ring is installed, and the gear meshes with the first gear ring to drive the first gear ring to rotate. The first gear ring meshes with the second gear ring to drive the second gear ring to rotate, thereby driving several pairs of fixed plates to rotate, which in turn drives the tubular parts to rotate, thus allowing the tubular parts to be heated evenly. Attached Figure Description

[0015] Figure 1 This is a front view of the internal structure of this utility model;

[0016] Figure 2 for Figure 1 Sectional view of AA;

[0017] Figure 3 This is an enlarged schematic diagram of point B in this utility model.

[0018] In the diagram: 1. Base plate; 2. Furnace body; 3. Furnace door; 4. U-shaped cavity; 5. Heating cylinder; 6. Heating tube; 7. Gear; 8. First gear ring; 9. Second gear ring; 10. Mounting plate; 11. Fixing plate; 12. Positioning column; 13. First motor; 14. Clamping plate; 15. Slide rail; 16. Threaded rod; 17. Slider; 18. Rotary seat; 19. Second motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Wherein, directional terms such as "upper" and "lower" mentioned herein are used in conjunction with... Figure 1 The orientation is used as a reference.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a vacuum heat treatment furnace for tubular parts, including a base plate 1; a furnace body 2 is installed on the base plate 1, a U-shaped cavity 4 is opened in the wall of the furnace body 2, a heating cylinder 5 is installed in the center of the furnace body 2, a cavity is opened inside the heating cylinder 5, and electric heating tubes 6 are arranged in both the U-shaped cavity 4 and the cavity; a furnace door 3 is movably installed on one side of the furnace body 2, a number of positioning components for fixing the heating tubes 6 are installed on the furnace door 3, and a driving component for driving the number of positioning components to rotate is installed inside the furnace door 3.

[0021] The furnace body 2 can be installed on the base plate 1. The parts can be placed inside the furnace body 2 for heating. The U-shaped cavity 4 and the cavity are provided to install heating tubes 6 to heat the parts. The furnace body 3 is installed and can be moved to move the positioning component and the tubular parts. The positioning component can fix the tubular parts. The drive component can be activated to rotate the positioning component, thereby rotating the tubular parts. This facilitates uniform heating of the tubular parts and achieves a better surface treatment effect.

[0022] Furthermore, the positioning component includes clamping plates 14, and several pairs of fixing plates are rotatably installed on the inner wall of the furnace door 3 in a circular array, with the several pairs of clamping plates 14 hinged to the several pairs of fixing plates.

[0023] The clamping plate 14 can be installed on the fixing plate by installing the fixing plate, and the tubular parts can be clamped and fixed by hinged clamping plate 14.

[0024] Furthermore, the drive assembly includes a first motor 13, a gear 7 rotatably mounted inside the furnace door 3, a gear 7 cavity opened inside the furnace door 3, a first gear ring 8 rotatably mounted inside the gear 7 cavity, teeth provided on both the inner and outer rings of the first gear ring 8, the outer teeth of the first gear ring 8 meshing with the gear 7, a plurality of second gear rings 9 rotatably mounted in a circular array inside the gear 7 cavity, the plurality of second gear rings 9 meshing with the inner teeth of the first gear ring 8, and a plurality of fixed plates 11 fixedly connected to the plurality of second gear rings 9.

[0025] The first motor 13 is installed and started, which drives the gear 7 to rotate. The gear 7 cavity allows the first gear ring 8 and the second gear ring 9 to rotate within it. The first gear ring 8 is installed and meshes with the gear 7, which drives the first gear ring 8 to rotate. The first gear ring 8 meshes with the second gear ring 9, which drives the second gear ring 9 to rotate. This drives several pairs of fixed plates to rotate, thereby driving the tubular parts to rotate, so that the tubular parts can be heated evenly.

[0026] Furthermore, an installation plate 10 is installed on the furnace door 3, and several positioning posts 12 are installed on the installation plate 10. Several second gear rings 9 are rotatably installed on the several positioning posts 12.

[0027] The mounting plate 10 and the positioning post 12 facilitate the installation of the first gear ring 8 and the second gear ring 9.

[0028] Furthermore, a slide rail 15 is provided on one side of the base plate 1, and a threaded rod 16 is rotatably installed in the slide rail 15. A slider 17 is screwed onto the threaded rod 16. The slider 17 is slidably installed in the slide rail 15, and a rotating seat 18 is rotatably installed on the slider 17. The furnace door 3 is fixedly connected to the rotating seat 18.

[0029] The threaded rod 16 is installed, and the rotation of the threaded rod 16 can drive the slider 17 to move within the slide rail 15, thereby driving the furnace door 3 to move, which in turn drives the tubular parts to move. The rotating seat 18 is installed by rotation, and the rotating seat 18 rotates to facilitate loading and unloading.

[0030] Furthermore, a second motor 19 for driving the threaded rod 16 to rotate is installed on the base plate 1.

[0031] By installing a second motor 19 and starting the second motor 19, the threaded rod 16 can be rotated.

[0032] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0033] The working principle and usage process of this utility model are as follows: When in use, the furnace door 3 is opened, and the rotating seat is rotated to move the furnace door to a direction that facilitates feeding. Several tubular parts to be heated are placed at one end between several pairs of clamping plates 14 for clamping and fixing. After the tubular parts are fixed, the second motor 19 is started to drive the threaded rod 16 to rotate, thereby driving the slider 17 to move, and then driving the furnace door 3 and the tubular parts to move until all the tubular parts are placed in the furnace body 2. The first motor 13 is started to drive the gear 7 to rotate. The gear 7 meshes with the first gear ring 8 to drive the first gear ring 8 to rotate. The first gear ring 8 meshes with several second gear rings 9 to drive several second gear rings 9 to rotate, thereby driving several tubular parts to rotate, so that the tubular parts can be heated evenly.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum heat treatment furnace for tubular parts, characterized by, The utility model provides a kind of stove, including bottom plate (1);The bottom plate (1) is installed with furnace body (2), the U-shaped cavity (4) is opened in the wall of furnace body (2), heating cylinder (5) is installed in the inside center of furnace body (2), the cavity is opened in the inside of heating cylinder (5), electric heating tube (6) is arranged in the U-shaped cavity (4) and the cavity, furnace door (3) is movably installed in one side of furnace body (2), a plurality of positioning assemblies for fixing electric heating tube (6) are installed on the furnace door (3), driving assembly for driving a plurality of positioning assemblies to rotate is installed in the furnace door (3); The driving assembly includes first motor (13), gear (7) is rotatably installed in the furnace door (3), gear (7) cavity is opened in the furnace door (3), first gear ring (8) is rotatably installed in the gear (7) cavity, gear tooth is arranged on the inner and outer rings of first gear ring (8), the outer gear tooth of first gear ring (8) is engaged with gear (7), a plurality of second gear rings (9) are rotatably installed in the gear (7) cavity in annular array mode, a plurality of second gear rings (9) are engaged with the inner gear tooth of first gear ring (8), a plurality of pairs of fixed plates (11) are fixedly connected with a plurality of second gear rings (9).

2. The vacuum heat treatment furnace for tubular parts according to claim 1, characterized in that, The positioning assembly includes clamping plate (14), a plurality of pairs of fixed plates (11) are rotatably installed on the inner wall of furnace door (3) in annular array mode, a plurality of pairs of clamping plates (14) are hinged to a plurality of pairs of fixed plates (11).

3. The vacuum heat treatment furnace for tubular parts according to claim 1, characterized in that, Mounting plate (10) is installed on the furnace door (3), a plurality of positioning columns (12) are installed on the mounting plate (10), a plurality of second gear rings (9) are rotatably installed on a plurality of positioning columns (12).

4. The vacuum heat treatment furnace for tubular parts according to claim 1, characterized in that, Slide rail (15) is opened in one side of bottom plate (1), threaded rod (16) is rotatably installed in the slide rail (15), sliding block (17) is screwed on the threaded rod (16), sliding block (17) is slidably installed in the slide rail (15), rotating seat (18) is rotatably installed on the sliding block (17), the furnace door (3) is fixedly connected with rotating seat (18).

5. The vacuum heat treatment furnace for tubular parts according to claim 4, characterized in that, Second motor (19) is installed on the bottom plate (1) to drive the rotation of threaded rod (16).

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