Nitrogen atmosphere protection sintering furnace for large-size push plate

Abstract

The nitrogen atmosphere protection sintering furnace for the large-size push plate relates to the technical field of sintering furnaces and comprises a sintering furnace body, a furnace door is arranged at the outlet end of the sintering furnace body, two fixing shafts are fixedly connected to the two side ends of the furnace door respectively, and connecting plates are rotationally connected to the outer walls of the two fixing shafts respectively. Rotating shafts are rotationally connected to the two sets of connecting plates correspondingly, eccentric wheels are fixedly connected to the outer sides, corresponding to the connecting plates, of the outer walls of the two sets of rotating shafts correspondingly, fixing plates are fixedly connected to the ends, away from the eccentric wheels, of the two sets of rotating shafts correspondingly, and L-shaped plates are fixedly connected to the positions, corresponding to the lower portions of the connecting plates, of the two side ends of the sintering furnace body correspondingly; grooves are formed in the ends, close to the eccentric wheels, of the two L-shaped plates, and through the structures such as the connecting plates, the L-shaped plates, the rotating shafts, the eccentric wheels and the grooves, the effects of improving the sealing performance, preventing internal heat loss and avoiding part firing failure are achieved, and the problems of heat loss and part firing failure in a traditional sintering furnace are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, and particularly relates to a large-size pusher nitrogen atmosphere protection sintering furnace. Background Art

[0002] A large-size pusher nitrogen atmosphere protection sintering furnace refers to a device with a relatively large-size furnace chamber, using a pusher plate as the product carrier and performing sintering treatment under the protection of nitrogen atmosphere. This device realizes the sintering treatment of specific materials by precisely controlling the introduction of nitrogen and conditions such as the temperature and atmosphere inside the furnace chamber to meet the material performance and process requirements.

[0003] Currently, the sealing performance of the sintering furnace in the prior art is poor during use. Therefore, heat loss inside will occur, resulting in an imbalance in the internal temperature, which will cause the parts to fail in the firing process and reduce the firing success rate.

[0004] Therefore, this case proposes a large-size pusher nitrogen atmosphere protection sintering furnace to solve the above technical problems. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a large-size pusher nitrogen atmosphere protection sintering furnace, which can effectively solve the technical problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A large-size pusher nitrogen atmosphere protection sintering furnace includes a sintering furnace body. A furnace door is arranged at the outlet end of the sintering furnace body. Two fixed shafts are fixedly connected to both side ends of the furnace door. Two connecting plates are rotatably connected to the outer walls of the two groups of fixed shafts. Two rotating shafts are rotatably connected to the two groups of connecting plates. Eccentric wheels are fixedly connected to the outer walls of the two groups of rotating shafts corresponding to the outside of the connecting plates. Fixing plates are fixedly connected to the ends of the two groups of rotating shafts far away from the eccentric wheels. L-shaped plates are fixedly connected to both side ends of the sintering furnace body corresponding to the lower sides of the connecting plates. Grooves are opened at one ends of the two groups of L-shaped plates close to the eccentric wheels.

[0008] As a further scheme of the utility model, limiting plates are fixedly connected to the ends of the two groups of L-shaped plates far away from the sintering furnace body.

[0009] As a further scheme of the utility model, telescopic grooves are opened at the ends of the two groups of L-shaped plates far away from the sintering furnace body corresponding to the lower sides of the limiting plates. Blocking blocks are slidably connected to the inner walls of the two groups of telescopic grooves.

[0010] As a further scheme of the utility model, springs are fixedly connected to the ends of the two groups of telescopic grooves close to the sintering furnace body. The two groups of springs are fixedly connected to the blocking blocks.

[0011] As a further solution of the utility model, two movable grooves are provided on both sides of the inner wall of the sintering furnace body and extend to the outlet end, and the inner walls of the two groups of movable grooves are provided with movable rods, and the bottom ends of the two groups of movable rods are fixedly connected with multiple roller mechanisms.

[0012] As a further solution of the utility model, a large-sized push plate is fixedly connected between the two groups of moving rods, and the two large-sized push plates are fixedly connected to the furnace door.

[0013] As a further solution of the utility model, the bottom ends of the two groups of blocks are both shaped as slopes, and the two groups of moving rods are both fixedly connected to the furnace door.

[0014] The beneficial effects of the utility model are as follows:

[0015] Through the cooperation of the connecting plate, L-shaped plate, rotating shaft, eccentric wheel and groove, the connecting plate can be in a tensioned state, so that the sintering furnace body and the furnace door are closed more tightly, thereby improving the sealing performance, preventing the internal heat loss during the firing process, and thus avoiding the failure of the parts firing, and improving the success rate of the device firing;

[0016] Through the cooperation of the clamping block, the telescopic slot, the limiting plate and the spring, the fixing plate can be limited, thereby preventing the fixing plate from rotating and causing the eccentric wheel to escape from the groove, thereby avoiding affecting the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a nitrogen atmosphere protection sintering furnace for a large-size push plate of the utility model;

[0018] Figure 2 This is a partial structural diagram of a large-size push plate nitrogen atmosphere protection sintering furnace of the utility model;

[0019] Figure 3 This is a cross-sectional view of an L-shaped plate used in a large-size push plate nitrogen atmosphere protection sintering furnace of the utility model;

[0020] Figure 4 This is an opening state diagram of a large-size push plate nitrogen atmosphere protection sintering furnace of the utility model;

[0021] Figure 5 The utility model is a cross-sectional view of a sintering furnace body used for a large-size push plate nitrogen atmosphere protection sintering furnace.

[0022] In the figure: 1. Sintering furnace body; 2. Furnace door; 3. Fixed shaft; 4. Connecting plate; 5. Rotating shaft; 6. Eccentric wheel; 7. Fixed plate; 8. L-shaped plate; 9. Groove; 10. Limit plate; 11. Telescopic groove; 12. Block; 13. Spring; 14. Moving groove; 15. Moving rod; 16. Roller mechanism; 17. Large-size pushing plate. Specific implementation mode

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0024] As Figures 1-5 shown, a nitrogen atmosphere protection sintering furnace for a large-size pushing plate includes a sintering furnace body 1. A furnace door 2 is arranged at the outlet end of the sintering furnace body 1. Two fixed shafts 3 are fixedly connected to both side ends of the furnace door 2. Connecting plates 4 are rotatably connected to the outer walls of the two groups of fixed shafts 3. Rotating shafts 5 are rotatably connected to both groups of connecting plates 4. Eccentric wheels 6 are fixedly connected to the outer walls of the two groups of rotating shafts 5 corresponding to the outer sides of the connecting plates 4. Fixed plates 7 are fixedly connected to the ends of the two groups of rotating shafts 5 far from the eccentric wheels 6. L-shaped plates 8 are fixedly connected to both side ends of the sintering furnace body 1 corresponding to the lower sides of the connecting plates 4. Grooves 9 are opened at the ends of the two groups of L-shaped plates 8 close to the eccentric wheels 6.

[0025] In this embodiment, limit plates 10 are fixedly connected to the ends of the two groups of L-shaped plates 8 far from the sintering furnace body 1. Telescopic grooves 11 are opened at the ends of the two groups of L-shaped plates 8 far from the sintering furnace body 1 corresponding to the lower sides of the limit plates 10. Blocks 12 are slidably connected to the inner walls of the two groups of telescopic grooves 11;

[0026] The distance between the block 12 and the limit block 10 is equal to the height of the fixed plate 7. Therefore, the fixed plate 7 can be limited by the block 12 and the limit block 10, so that the furnace door 2 and the sintering furnace body 1 can be closely attached, enhancing its sealing performance, and thus preventing internal heat loss during use.

[0027] In this embodiment, springs 13 are fixedly connected to the ends of the two groups of telescopic grooves 11 close to the sintering furnace body 1. The two groups of springs 13 and the blocks 12 are fixedly connected;

[0028] The elastic action of the spring 13 can move the block 12 outward, thereby completing the limitation of the fixed plate 7.

[0029] In this embodiment, two moving grooves 14 are opened on both inner walls of the sintering furnace body 1 and extend to the outlet end. Moving rods 15 are arranged on the inner walls of the two groups of moving grooves 14. Multiple roller mechanisms 16 are fixedly connected to the bottom ends of the two groups of moving rods 15;

[0030] The existence of the roller mechanism 16 can reduce friction during movement, thereby making the movement smoother.

[0031] In this embodiment, a large-sized push plate 17 is fixedly connected between the two groups of moving rods 15, and the two large-sized push plates 17 are fixedly connected to the furnace door 2. The parts to be fired can be placed on the large-sized push plates 17 and then pushed into the sintering furnace body 1 for firing.

[0032] In this embodiment, the bottom ends of the two groups of blocks 12 are both shaped as slopes, and the two groups of moving rods 15 are fixedly connected to the furnace door 2. The sloped blocks 12 can complete the extrusion limit when rotating, which is convenient for operation.

[0033] It should be noted that the utility model is a large-size push plate nitrogen atmosphere protection sintering furnace. When in use, the parts to be fired are first placed on the large-size push plate 17, and then pushed into the sintering furnace body 1 through the furnace door 2. During the pushing and pulling process, the roller mechanism 16 can reduce friction, so that pushing and pulling are more convenient and quick;

[0034] After the furnace door 2 is closed, the connecting plate 4 is clamped on the L-shaped plate 8, and then the fixed plate 7 is rotated to rotate with the rotating shaft 5 and the eccentric wheel 6, and the eccentric wheel 6 contacts the groove 9 and squeezes the L-shaped plate 8, so that the connecting plate 4 is in a tensioned state, so that the sintering furnace body 1 and the furnace door 2 are closed more tightly, thereby improving the sealing performance, preventing the internal heat loss during the firing process, and thus avoiding the situation of the failure of the parts firing, and improving the success rate of the device firing;

[0035] When the fixed plate 7 is rotating, the block 12 will be squeezed to shrink into the telescopic groove 11. When the fixed plate 7 contacts the limiting plate 10, the block 12 can be popped out by the reset action of the spring 13, so that the fixed plate 7 can be limited, thereby preventing the fixed plate 7 from rotating and causing the eccentric wheel 6 to disengage from the groove 9, thereby avoiding affecting the sealing effect.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-size push plate nitrogen atmosphere protection sintering furnace, comprising a sintering furnace body (1), wherein the outlet end of the sintering furnace body (1) is provided with a furnace door (2), characterized in that: Two fixed shafts (3) are fixedly connected to both side ends of the furnace door (2); the outer walls of the two groups of fixed shafts (3) are rotatably connected to connecting plates (4); the two groups of connecting plates (4) are rotatably connected to rotating shafts (5); the outer walls of the two groups of rotating shafts (5) are fixedly connected to eccentric wheels (6) corresponding to the outer sides of the connecting plates (4); the ends of the two groups of rotating shafts (5) away from the eccentric wheels (6) are fixedly connected to fixed plates (7); the two side ends of the sintering furnace body (1) are fixedly connected to the bottom of the connecting plates (4); and the ends of the two groups of L-shaped plates (8) close to the eccentric wheels (6) are provided with grooves (9).

2. The large-size push plate nitrogen atmosphere protection sintering furnace according to claim 1, characterized in that: One end of the two groups of L-shaped plates (8) away from the sintering furnace body (1) is fixedly connected to a limiting plate (10).

3. The large-size push plate nitrogen atmosphere protection sintering furnace according to claim 2, characterized in that: The two groups of L-shaped plates (8) are provided with telescopic grooves (11) below the corresponding limit plates (10) at one end away from the sintering furnace body (1), and the inner walls of the two groups of telescopic grooves (11) are slidably connected with clamping blocks (12).

4. The large-size push plate nitrogen atmosphere protection sintering furnace according to claim 3, characterized in that: The two groups of telescopic slots (11) are both fixedly connected to one end close to the sintering furnace body (1) with a spring (13), and the two groups of springs (13) and the clamping block (12) are both fixedly connected.

5. The large-size push plate nitrogen atmosphere protection sintering furnace according to claim 3, characterized in that: Two movable grooves (14) are provided on both sides of the inner wall of the sintering furnace body (1) and extend to the outlet end. The inner walls of the two groups of movable grooves (14) are provided with movable rods (15). The bottom ends of the two groups of movable rods (15) are fixedly connected with a plurality of roller mechanisms (16).

6. The large-size push plate nitrogen atmosphere protection sintering furnace according to claim 5, characterized in that: A large-sized push plate (17) is fixedly connected between the two groups of moving rods (15), and the two large-sized push plates (17) are fixedly connected to the furnace door (2).

7. The large-size push plate nitrogen atmosphere protection sintering furnace according to claim 5, characterized in that: The bottom ends of the two groups of clamping blocks (12) are both arranged to be sloped, and the two groups of moving rods (15) are both fixedly connected to the furnace door (2).

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