A vacuum heat treatment furnace

Abstract

This application relates to a vacuum heat treatment furnace, comprising a furnace body, an annular heating coil, a bracket, and a material rack. The annular heating coil is spaced apart on the inner wall of the furnace body. The bracket is fixed to the bottom of the furnace body, and a slide rail is provided above the bracket. The material rack includes a sliding frame and a material box, with the sliding frame and slide rail slidably engaged. The material box includes a box body and positioning rods, with an upper positioning rod and a lower positioning rod, wherein the upper and lower positioning rods are detachably connected to the box body. The lower positioning rod is hollow, and the upper and lower positioning rods are sleeved on each other. This application utilizes the assembly of multiple material boxes to simultaneously process multiple heat-treated parts, improving production speed. The height between the material boxes can be adaptively adjusted according to the size of the heated parts to meet the heat treatment requirements of different heated parts. Simultaneously, the cooperation between the limiting frame and the baffle ensures the stability of the material rack, resulting in higher safety.

Description

Technical Field

[0001] This application relates to the field of heat treatment equipment technology, and more specifically, to a vacuum heat treatment furnace. Background Technology

[0002] A vacuum heat treatment furnace is a device used for heat treatment in an oxygen-free or low-oxygen environment. It can perform heat treatment processes such as annealing, quenching, and heat treatment by placing the workpiece in a vacuum state and then applying heat. This environment can prevent the material surface from oxidizing, while providing a more precise and controllable heating process. It is often used to process metals and alloys to improve their mechanical properties, wear resistance, or corrosion resistance.

[0003] In the use of existing heat treatment furnaces, it has been found that conventional heat treatment furnaces use pliers to place the parts to be heat treated onto the racks inside the furnace. However, when placing the parts to be heat treated with pliers, the placement of the parts is not neat, resulting in a reduction in the number of parts that can be heat treated, low production efficiency, and poor heat treatment efficiency of the equipment. Therefore, there is an urgent need for a heat treatment furnace that can increase the number of parts that can be heat treated in order to improve production speed. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a vacuum heat treatment furnace that utilizes the assembly of multiple material boxes to simultaneously process multiple heat-treated parts, thereby increasing production speed. At the same time, the limiting mechanism can ensure the stability of the material rack and enhance safety.

[0005] The objective of this application is achieved through the following technical solution: A vacuum heat treatment furnace includes a furnace body, annular heating coils, a bracket, and a material rack. The annular heating coils are spaced apart on the inner wall of the furnace body and connected in series. The annular heating coils are electrically connected to an external power supply. The bracket is fixed to the bottom of the furnace body and has a slide rail above it. The material rack includes a sliding frame and a material box. The sliding frame and the slide rail are slidably engaged. The material box is engaged with the upper part of the sliding frame. The material box includes a box body and positioning rods. The positioning rods include an upper positioning rod and a lower positioning rod, wherein the upper positioning rod and the lower positioning rod are detachably connected to the box body. The lower positioning rod is hollow, and the upper positioning rod and the lower positioning rod are sleeved together.

[0006] As a further improvement of this application, the box body is provided with a retaining edge around its perimeter, and the retaining edge has a certain height.

[0007] As a further improvement of this application, the vacuum heat treatment furnace also includes a limiting mechanism, which includes a fixed end and a limiting frame. The fixed end is fixed to the furnace body, and the limiting frame is fixed to the other side of the fixed end. The limiting frame cooperates with the side guard.

[0008] As a further improvement of this application, a telescopic spring is provided at the fixed end, the fixed end is horizontally set, and the limiting frame is provided with an inclined end near the side of the guard.

[0009] As a further improvement of this application, the top of the annular heating coil is provided with an opening, and the two ends of the annular heating coil are connected to an external power source through wires.

[0010] As a further improvement of this application, the lower positioning rod is provided with a threaded hole, and a tightening nut is fitted on the lower positioning rod.

[0011] As a further improvement of this application, a support base is provided on the outer side of the furnace body.

[0012] As a further improvement of this application, the furnace body is provided with a sealed door, and the sealed door is provided with an observation window.

[0013] As a further improvement of this application, the box body is provided with protrusions on the upper and lower sides, and the upper positioning rod and the lower positioning rod are respectively provided with grooves, wherein the grooves and protrusions cooperate with each other.

[0014] As a further improvement to this application, the bottom of the material rack is provided with a hook ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes the assembly of multiple material boxes to simultaneously process multiple heat-treated parts, thereby increasing production speed. The height between the material boxes can be adaptively adjusted according to the size of the heating element to meet the heat treatment requirements of different heating elements. At the same time, the cooperation between the limiting frame and the guard edge can ensure the stability of the material rack and enhance safety. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a vacuum heat treatment furnace provided for some embodiments of this application; Figure 2 A front view of a vacuum heat treatment furnace provided for some embodiments of this application; Figure 3 A cross-sectional view of a vacuum heat treatment furnace provided for some embodiments of this application; Figure 4 A schematic diagram of the specific structure at the positioning rod; Figure 5 This is a top view of the limit frame.

[0017] Icons: 1. Furnace body; 2. Annular heating ring; 3. Bracket; 4. Material rack; 5. Slide rail; 6. Sliding frame; 7. Material box; 8. Box body; 9. Positioning rod; 10. Upper positioning rod; 11. Lower positioning rod; 12. Side guard; 13. Limiting mechanism; 14. Fixed end; 15. Limiting frame; 16. Tightening nut; 17. Hook ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0019] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0020] This application provides a vacuum heat treatment furnace, comprising a furnace body 1, annular heating coils 2, a bracket 3, and a material rack 4. The annular heating coils 2 are spaced apart on the inner wall of the furnace body 1 and connected in series. Each annular heating coil 2 is electrically connected to an external power source, fixing it to a specific area within the furnace to ensure uniform heating coverage and even heating of the processed parts. The bracket 3 is fixed to the bottom of the furnace body 1, and a slide rail 5 is provided above the bracket 3. The material rack 4 includes a sliding frame 6 and a material box 7. The slide rails 5 slide together, and the slide frame 6 is fitted with the material box 7. The material box 7 includes a box body 8 and a positioning rod 9. The positioning rod 9 includes an upper positioning rod 10 and a lower positioning rod 11. The upper positioning rod 10 and the lower positioning rod 11 are detachably connected to the box body 8. The lower positioning rod 11 is hollow. The upper positioning rod 10 and the lower positioning rod 11 are sleeved on each other. In use, the number of material boxes 7 can be freely set according to the size of the heating element to ensure that the number of heating elements placed in the material box 7 is appropriate, thereby improving the production speed and heat treatment efficiency.

[0021] The box body 8 is provided with a retaining edge 12 around its perimeter. The retaining edge 12 has a certain height and can protect the heating element from falling and damaging the annular heating ring 2.

[0022] The vacuum heat treatment furnace also includes a limiting mechanism 13, which includes a fixed end 14 and a limiting frame 15. The fixed end 14 is fixed to the furnace body 1, and the limiting frame 15 is fixed to the other side of the fixed end 14. The limiting frame 15 cooperates with the side guard 12. The limiting frame 15 has a certain height in the vertical direction. When the material box 7 is moved into the furnace body 1, the side guard 12 around the box 8 contacts the limiting frame 15, thereby improving the stability of the box 8.

[0023] Specifically, a telescopic spring is provided at the fixed end 14, wherein the fixed end 14 is horizontally set, and the limiting frame 15 is provided with an inclined end on the side near the stop 12. The limiting mechanism 13 has a certain telescopic elasticity, and the distance between the relatively set limiting frames 15 is less than the width of the box 8. When the box 8 is moved in, the box 8 first cooperates with the inclined end, and the telescopic spring is compressed under force, pressing the limiting frame 15 towards the side closer to the furnace body 1, thereby improving the stability between the limiting frame 15 and the box 8.

[0024] Specifically, the top of the annular heating coil 2 is provided with an opening, and both ends of the annular heating coil 2 are connected to an external power source through wires. Power lines are connected to the ends of the annular heating coil 2 at both ends of the opening, thus forming a closed loop.

[0025] The lower positioning rod 11 is provided with a threaded hole and a tightening nut 16 is provided on the lower positioning rod 11. By tightening the nut 16, the insertion depth of the upper positioning rod 10 in the lower positioning rod 11 can be adjusted, thereby adjusting the height between the stacked material boxes 7 and improving the adaptability.

[0026] Specifically, the furnace body 1 has a support base on its outer side, a sealed door on its body, an observation window on the sealed door, and a hook ring 17 at the bottom of the material rack 4.

[0027] The box body 8 has protrusions on the top and bottom, and the upper positioning rod 10 and lower positioning rod 11 are respectively provided with grooves. The grooves and protrusions cooperate with each other. When in use, the boxes 7 can be assembled according to the required number of stacked boxes to increase the capacity.

[0028] In use, first, place an appropriate amount of heating element into the material box 7, assemble the material box 7 using the upper positioning rod 10 and the lower positioning rod 11, fix the relative height between the material boxes 7 by tightening the screws, assemble the material boxes 7 in sequence, after assembly, cooperate the sliding frame 6 and the bracket 3 to put the material rack 4 into the furnace body 1, after heat treatment is completed, the material can be removed by hooking the hook ring 17 with the iron hook.

[0029] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art, all of which fall within the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vacuum heat treatment furnace comprising a furnace body (1), an annular heating coil (2), a bracket (3), and a material rack (4), characterized in that, The annular heating rings (2) are spaced apart on the inner wall of the furnace body (1). The annular heating rings (2) are connected in series. The annular heating rings (2) are electrically connected to an external power supply. The bracket (3) is fixed to the bottom of the furnace body (1). A slide rail (5) is provided above the bracket (3). The material rack (4) includes a sliding frame (6) and a material box (7). The sliding frame (6) and the slide rail (5) are slidably engaged. The sliding frame (6) is engaged with the material box (7) above. The material box (7) includes a box body (8) and a positioning rod (9). The positioning rod (9) includes an upper positioning rod (10) and a lower positioning rod (11). The upper positioning rod (10) and the lower positioning rod (11) are detachably connected to the box body (8). The lower positioning rod (11) is hollow. The upper positioning rod (10) and the lower positioning rod (11) are sleeved together.

2. The vacuum heat treatment furnace according to claim 1, wherein The box body (8) is provided with a retaining edge (12) around its perimeter, and the retaining edge (12) has a certain height.

3. A vacuum heat treatment furnace according to claim 2, wherein The vacuum heat treatment furnace also includes a limiting mechanism (13), which includes a fixed end (14) and a limiting frame (15). The fixed end (14) is fixed to the furnace body (1), and the limiting frame (15) is fixed to the other side of the fixed end (14). The limiting frame (15) cooperates with the side guard (12).

4. A vacuum heat treatment furnace according to claim 3, wherein A telescopic spring is provided at the fixed end (14), the fixed end (14) is set horizontally, and the limit frame (15) has an inclined end on the side near the stop (12).

5. The vacuum heat treatment furnace according to claim 1, wherein The top of the annular heating coil (2) is provided with an opening, and the two ends of the annular heating coil (2) are connected to an external power supply through wires.

6. The vacuum heat treatment furnace according to claim 1, wherein The lower positioning rod (11) is provided with a threaded hole, and a tightening nut (16) is provided on the lower positioning rod (11).

7. The vacuum heat treatment furnace according to claim 1, wherein The furnace body (1) is provided with a support base on its outer side.

8. The vacuum heat treatment furnace according to claim 1, wherein The furnace body (1) is provided with a sealed door, and the sealed door is provided with an observation window.

9. The vacuum heat treatment furnace according to claim 1, wherein The box body (8) has protrusions on the upper and lower sides, and the upper positioning rod (10) and lower positioning rod (11) are respectively provided with grooves, wherein the grooves and protrusions cooperate with each other.

10. The vacuum heat treatment furnace according to claim 1, wherein The bottom of the material rack (4) is provided with a hook (17).

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