Tempering furnace for metal heat treatment

Abstract

The utility model relates to the technical field of metal heat treatment, in particular to a tempering furnace for metal heat treatment, which comprises a furnace body, a heat treatment adjusting mechanism is arranged inside the furnace body, the heat treatment adjusting mechanism comprises a table frame which is slidably connected inside the furnace body, and the top of the table frame is rotatably connected with two oscillating rods. The opposite sides of the two swing rods are rotationally connected with a bearing plate, the right side of the bearing plate is rotationally connected with a furnace door rotationally connected with the table frame, and the side, opposite to the inner bottom wall of the furnace body, of the table frame is movably connected with a material collecting frame. According to the tempering furnace for metal heat treatment, under the condition that the bearing plates are kept horizontal, the bearing plates can be sequentially unfolded outside the furnace body, so that metal pieces can be conveniently taken up or placed on the bearing plates, the working efficiency is improved, and when the metal pieces are heated, the fan can operate to drive gas in the furnace body to flow, so that the service life of the furnace body is prolonged. And the air flow uniformly flows to the bearing plate in cooperation with the flow dividing holes in the flow guide plate, so that the metal piece is uniformly heated.

Description

Technical Field

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

[0002] Metal heat treatment is a process of heating a metal workpiece to a suitable temperature in a certain medium, keeping it at this temperature for a certain period of time, and then cooling it at different speeds in different media to control its performance by changing the microstructure of the metal material on the surface or inside. There are four basic processes for the overall heat treatment of steel: annealing, normalizing, quenching and tempering. The tempering furnace is a device used for tempering general metal parts in air, as well as quenching, annealing and aging heat treatment of light alloy parts such as aluminum alloy die castings, pistons, and aluminum plates.

[0003] Quenching is the process of heating and keeping the workpiece warm, and then quickly cooling it in a quenching medium such as water, oil or other inorganic salt solution, organic aqueous solution, etc. After quenching, the steel becomes hard, but at the same time becomes brittle. In order to reduce the brittleness of the steel, the quenched steel is kept warm for a long time at an appropriate temperature above room temperature and below 650°C, and then cooled. This process is called tempering. Quenching and tempering are closely related, and are often used in combination and are indispensable.

[0004] Please refer to the patent for a tempering furnace for heat treatment of metal surface with announcement number CN215481106U. It is proposed that "the existing small tempering furnace has a small internal space and limited operating space, which is not convenient for placing and taking metal parts. There are certain safety hazards in the process of taking and placing, and the internal space of the smaller tempering furnace is not fully utilized, resulting in low processing efficiency." In the above embodiment, the support plate is pulled out by pulling the furnace door, and the reinforcing rod is used to strengthen the support and linkage. However, when the furnace door is opened, the furnace mouth is occupied by the support plate. If maintenance is required on the furnace body, a large number of parts need to be disassembled, and the operation is relatively complicated. The present application proposes a technical solution to solve this technical problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a tempering furnace for metal heat treatment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tempering furnace for metal heat treatment, comprising a furnace body, wherein a heat treatment adjustment mechanism is arranged inside the furnace body;

[0007] The heat treatment adjustment mechanism comprises a table frame slidably connected inside the furnace body, the top of the table frame is rotatably connected to two swinging rods, the two swinging rods are rotatably connected to a supporting plate on one side opposite to the other, the right side of the supporting plate is rotatably connected to a furnace door rotatably connected to the table frame, and the side of the table frame opposite to the bottom wall of the furnace body is movably connected to a material collecting frame;

[0008] The heat treatment adjustment mechanism also includes a frame fixedly installed on the top of the furnace body, a motor is fixedly connected to the inside of the frame, the output end of the motor is fixedly connected to the fan blades located inside the furnace body, the inner wall of the furnace body is fixedly connected to a guide plate corresponding to the position of the fan blades, and a diversion hole is opened inside the guide plate.

[0009] Optionally, an inner sealing plate is fixedly connected to the left side of the furnace door, an outer sealing plate is fixedly connected to the right side of the furnace door, a handle is fixedly connected to the right side of the outer sealing plate, and the furnace door is parallel to the swing rod.

[0010] By adopting the above technical solution, it is convenient to make the inner sealing plate and the outer sealing plate fit tightly to the furnace body when closing the furnace door, thereby reducing the loss of heat through the gap.

[0011] Optionally, the bottom of the swing rod is rotatably connected to a fixing seat fixedly connected to the table frame, and the top of the table frame is fixedly connected to a blanking plate, and the top end of the blanking plate is inclined to the left.

[0012] By adopting the above technical solution, it is convenient to use the fixed seat to support the bottom end of the swing rod and make it rotate on the top of the table frame, so that the oxide scale dropped from the metal material can be introduced into the collection frame by using the blanking plate.

[0013] Optionally, a connecting block is fixedly connected to the right side of the supporting plate, and the interior of the connecting block is rotatably connected to a connecting seat fixedly connected to an inner sealing plate on the furnace door.

[0014] By adopting the above technical solution, the rotational connection effect of the connecting block and the connecting seat can be conveniently utilized to achieve the rotational connection between the supporting plate and the furnace door.

[0015] Optionally, the number of the supporting plates is three, the front and rear sides of the supporting plates are fixedly connected with rotating rods, and the interior of the swing rod is provided with a rotating hole corresponding to the position of the rotating rod.

[0016] By adopting the above technical solution, it is convenient to make the rotating rod on the supporting plate pass through the swing rod through the rotating hole, so as to realize the rotation connection between the supporting plate and the swing rod.

[0017] Optionally, two extrusion springs are fixedly connected inside the furnace body, and a positioning block slidably connected to the furnace body is fixedly connected to opposite sides of the two extrusion springs.

[0018] By adopting the above technical solution, it is convenient to make the positioning block move to the side close to the furnace door under the action of the extrusion spring.

[0019] Optionally, a toggle rod extending to the outside of the furnace body is fixedly connected to the right side of the positioning block, and a positioning groove adapted to the positioning block is provided on the top of the furnace door and the bottom of the table frame.

[0020] By adopting the above technical solution, it is convenient to control the toggle lever on the outside of the furnace body to adjust the position of the positioning block.

[0021] Optionally, a material collection opening slidably matched with a material collection frame is provided on the front of the furnace body, a handle is fixedly connected to the front of the material collection frame, and an electric control box is fixedly connected to the front of the furnace body.

[0022] By adopting the above technical solution, it is convenient to extend the material collection frame to the inside of the furnace body using the material collection opening, and convenient to use the electronic devices in the electric control box to control the operation of the motor and the heating elements in the furnace body.

[0023] Optionally, the front and rear sides of the table frame are fixedly connected with limiting slides, the right side of the furnace body is provided with a movable opening slidably adapted to the table frame and the limiting slide, and the left side of the table frame is fixedly connected with a limiting block whose width is greater than the movable opening.

[0024] By adopting the above technical solution, the movable block can be conveniently used to limit the movement of the table frame and the limiting slide plate, so that the movement of the table frame is stable.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0026] The tempering furnace for metal heat treatment has a heat treatment adjustment mechanism, and the furnace door can drive the swing rod to rotate clockwise by just pulling the handle, and the table frame can be pulled out of the furnace body, so as to facilitate maintenance of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0028] Figure 2 This is a top view of the structure of the support plate of the utility model;

[0029] Figure 3 This is a front view of the structure of the utility model;

[0030] Figure 4 It is a side view of the structure of the utility model.

[0031] In the figure: 1. furnace body; 101. movable opening; 102. material collection opening; 2. table frame; 3. fixed seat; 4. swing rod; 401. rotating hole; 5. supporting plate; 501. connecting block; 502. rotating rod; 6. connecting seat; 7. furnace door; 701. positioning groove; 8. inner sealing plate; 9. outer sealing plate; 10. handle; 11. extrusion spring; 12. positioning block; 13. toggle rod; 14. guide plate; 1401. diverter hole; 15. frame; 16. motor; 17. fan blade; 18. blanking plate; 19. material collection frame; 20. handle; 21. electric control box; 22. limit block; 23. limit slide plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-4 In this embodiment, a tempering furnace for metal heat treatment includes a furnace body 1, and a heat treatment adjustment mechanism is arranged inside the furnace body 1.

[0034] In this embodiment, the heat treatment adjustment mechanism includes a table frame 2 that is slidably connected to the inside of the furnace body 1, and the front and rear sides of the table frame 2 are fixedly connected to the limiting slide plate 23. The right side of the furnace body 1 is provided with an active opening 101 that is slidably adapted to the table frame 2 and the limiting slide plate 23, so that the active opening 101 can be used to conveniently realize the sliding connection between the table frame 2 and the limiting slide plate 23 and the furnace body 1, and maintain the stability of the movement of the table frame 2. The left side of the table frame 2 is fixedly connected with a limiting block 22 whose width is greater than the movable opening 101, so that the limiting block 22 can be used to prevent the table frame 2 from being separated from the furnace body 1, and the top of the table frame 2 is rotatably connected with two swing rods 4.

[0035] Among them, the bottom of the swing rod 4 is rotatably connected to a fixing seat 3 fixedly connected to the table frame 2, so that the bottom end of the swing rod 4 can be fixed on the table frame 2 by using the fixing seat 3, and the two swing rods 4 are rotatably connected to the supporting plates 5 on the opposite side. There are three supporting plates 5, and the front and rear sides of the supporting plates 5 are fixedly connected with a rotating rod 502. A rotating hole 401 corresponding to the position of the rotating rod 502 is opened inside the swing rod 4, so that the supporting plate 5 and the swing rod 4 can be rotatably connected by using the cooperation between the rotating rod 502 and the rotating hole 401.

[0036] Among them, the right side of the supporting plate 5 is rotatably connected to the furnace door 7 rotatably connected to the table frame 2, the left side of the furnace door 7 is fixedly connected to the inner sealing plate 8, and the right side of the furnace door 7 is fixedly connected to the outer sealing plate 9, so that when the furnace door 7 is closed, the inner sealing plate 8 and the outer sealing plate 9 can be used to reduce the outflow of heat and improve the insulation effect. The right side of the supporting plate 5 is fixedly connected to a connecting block 501, and the inside of the connecting block 501 is rotatably connected to a connecting seat 6 fixedly connected to the inner sealing plate 8 on the furnace door 7, so that the connecting block 501 and the connecting seat 6 can be used to realize the rotatable connection between the furnace door 7 and the supporting plate 5.

[0037] In this embodiment, a handle 10 is fixedly connected to the right side of the outer sealing plate 9, and the furnace door 7 is parallel to the swing rod 4, so that the handle 10 can be used to pull the furnace door 7 to drive the swing rod 4 to rotate. Two extrusion springs 11 are fixedly connected to the inside of the furnace body 1, and a positioning block 12 slidably connected to the furnace body 1 is fixedly connected to the opposite side of the two extrusion springs 11. A toggle rod 13 extending to the outside of the furnace body 1 is fixedly connected to the right side of the positioning block 12. Positioning grooves 701 compatible with the positioning blocks 12 are provided on the top of the furnace door 7 and the bottom of the table frame 2, so that the two positioning blocks 12 can move toward the side close to the furnace door 7 under the action of the extrusion springs 11, so that the positioning blocks 12 cooperate with the positioning grooves 701 when the furnace door 7 is closed to limit the movement of the furnace door 7 and the table frame 2.

[0038] Among them, a collection frame 19 is movably connected to the side of the table frame 2 opposite to the inner bottom wall of the furnace body 1, and a blanking plate 18 is fixedly connected to the top of the table frame 2, and the top of the blanking plate 18 is inclined to the left, so that the oxide scale dropped by the metal parts during the heating process can be introduced into the collection frame 19 under the table frame 2 by using the blanking plate 18. A collection opening 102 which is slidably adapted to the collection frame 19 is opened on the front of the furnace body 1, and a handle 20 is fixedly connected to the front of the collection frame 19, so that the handle 20 can be pulled conveniently to make the collection frame 19 slide in the collection opening 102.

[0039] In this embodiment, the heat treatment adjustment mechanism also includes a frame 15 fixedly installed on the top of the furnace body 1, and a motor 16 is fixedly connected inside the frame 15. An electric control box 21 is fixedly connected to the front of the furnace body 1, so that the electronic components in the electric control box 21 can be used to start the motor 16 before the heating element in the furnace body 1 is turned on to prevent the local temperature in the furnace body 1 from being too high. The output end of the motor 16 is fixedly connected to a fan blade 17 located on the inner side of the furnace body 1, and the inner wall of the furnace body 1 is fixedly connected to a guide plate 14 corresponding to the position of the fan blade 17. A diversion hole 1401 is opened inside the guide plate 14, so that the guide plate 14 and the diversion hole 1401 can be used to make the gas flow to the support plate 5, so that the metal parts on the support plate 5 are heated evenly.

[0040] The working principle of the above embodiment is:

[0041] When the tempering furnace for metal heat treatment is in use, the furnace door 7 can be driven by pulling the handle 10 to drive the swing rod 4 to rotate clockwise, and the table frame 2 can be pulled out of the furnace body 1, so that when the furnace door 7 and the swing rod 4 are both in a horizontal state, the support plates 5 are unfolded in sequence at the same horizontal height, so as to place or take out metal parts on the support plates 5, or to perform maintenance on the furnace body 1. After placing the metal parts on the support plates 5, the furnace door 7 is closed, and the positioning block 12 can be engaged with the furnace door 7 and the table frame 2 under the action of the extrusion spring 11. At this time, the inner sealing plate 8 and the outer sealing plate 9 on the furnace door 7 are respectively attached to the inner wall and the outer surface of the furnace body 1, so as to reduce the loss of heat. Then, the motor 16 drives the fan blades 17 to rotate to make the gas in the furnace body 1 flow, and the diversion holes 1401 on the guide plate 14 are used to make the air flow evenly to the support plate 5, so as to keep the metal parts heated evenly.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tempering furnace for metal heat treatment, comprising a furnace body (1), characterized in that: A heat treatment adjustment mechanism is provided inside the furnace body (1); The heat treatment adjustment mechanism comprises a table frame (2) slidably connected to the furnace body (1), the top of the table frame (2) is rotatably connected to two swinging rods (4), the two swinging rods (4) are rotatably connected to a supporting plate (5) on opposite sides, the right side of the supporting plate (5) is rotatably connected to a furnace door (7) rotatably connected to the table frame (2), and the side of the table frame (2) opposite to the inner bottom wall of the furnace body (1) is movably connected to a material collecting frame (19); The heat treatment adjustment mechanism further comprises a frame (15) fixedly mounted on the top of the furnace body (1), a motor (16) being fixedly connected to the interior of the frame (15), a fan blade (17) located on the inner side of the furnace body (1) being fixedly connected to the output end of the motor (16), a guide plate (14) corresponding to the position of the fan blade (17) being fixedly connected to the inner wall of the furnace body (1), and a diversion hole (1401) being provided inside the guide plate (14).

2. A tempering furnace for metal heat treatment according to claim 1, characterized in that: An inner sealing plate (8) is fixedly connected to the left side of the furnace door (7), an outer sealing plate (9) is fixedly connected to the right side of the furnace door (7), a handle (10) is fixedly connected to the right side of the outer sealing plate (9), and the furnace door (7) is parallel to the swing rod (4).

3. A tempering furnace for metal heat treatment according to claim 1, characterized in that: The bottom of the swing rod (4) is rotatably connected to a fixing seat (3) fixedly connected to the table frame (2), and the top of the table frame (2) is fixedly connected to a blanking plate (18), and the top end of the blanking plate (18) is inclined to the left.

4. A tempering furnace for metal heat treatment according to claim 2, characterized in that: A connecting block (501) is fixedly connected to the right side of the supporting plate (5), and a connecting seat (6) fixedly connected to the inner sealing plate (8) on the furnace door (7) is rotatably connected inside the connecting block (501).

5. The tempering furnace for metal heat treatment according to claim 1, characterized in that: The number of the supporting plates (5) is three, and the front and rear sides of the supporting plates (5) are both fixedly connected with a rotating rod (502), and the swing rod (4) is provided with a rotating hole (401) corresponding to the position of the rotating rod (502) inside.

6. A tempering furnace for metal heat treatment according to claim 1, characterized in that: Two extrusion springs (11) are fixedly connected inside the furnace body (1), and a positioning block (12) slidably connected to the furnace body (1) is fixedly connected to opposite sides of the two extrusion springs (11).

7. A tempering furnace for metal heat treatment according to claim 6, characterized in that: A toggle rod (13) extending to the outside of the furnace body (1) is fixedly connected to the right side of the positioning block (12), and a positioning groove (701) matching the positioning block (12) is provided on the top of the furnace door (7) and the bottom of the table frame (2).

8. The tempering furnace for metal heat treatment according to claim 1, characterized in that: The front of the furnace body (1) is provided with a material collection opening (102) slidably matched with the material collection frame (19), the front of the material collection frame (19) is fixedly connected to a handle (20), and the front of the furnace body (1) is fixedly connected to an electric control box (21).

9. The tempering furnace for metal heat treatment according to claim 1, characterized in that: The front and rear sides of the table frame (2) are both fixedly connected to a limiting slide plate (23); the right side of the furnace body (1) is provided with a movable opening (101) slidably matched with the table frame (2) and the limiting slide plate (23); and the left side of the table frame (2) is fixedly connected to a limiting block (22) having a width greater than the movable opening (101).

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