Sealed box type multipurpose furnace

Abstract

The utility model discloses a sealed box type multipurpose furnace, and relates to the technical field of automobile part machining. Comprising a furnace body, a furnace chamber arranged in the furnace body, and a heating part arranged on the side wall of the furnace chamber; the oven further comprises a placing frame arranged in the oven cavity in a sliding mode, the placing frame comprises a placing plate and a supporting column arranged at the bottom end of the placing plate, and a plurality of through holes are vertically formed in the placing plate in a penetrating mode. By arranging the containing plate and the supporting columns, a heated space can be formed among the containing plate, the supporting columns and the bottom wall of the furnace cavity, and the parts are prevented from making direct contact with the bottom wall of the furnace cavity; and a plurality of through holes are formed in the placing plate, so that heat in the heated space can be directly diffused upwards along the through holes to heat the bottom ends of the parts. Compared with the prior art that the bottom ends of the parts are shielded and are difficult to heat quickly due to the fact that the parts are directly contacted with the bottom end of the furnace chamber, the heating uniformity is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile part processing, in particular to a sealed box-type multi-purpose furnace. Background Art

[0002] When processing automobile parts, in order to obtain good fatigue resistance and wear resistance, and to ensure the reliability of the use performance of the parts, carburizing heat treatment is required. For example, differential gears, transmission shaft gears, steering gear shaft teeth, engine pistons and gear parts all need to be carburized and heat treated.

[0003] A sealed box-type multi-purpose furnace is often used for carburizing heat treatment. In the prior art, the parts to be heat treated are often directly placed at the bottom of the furnace cavity. Such placement will cause the bottom end of the parts to contact the furnace cavity, so that the parts will be blocked by the furnace cavity, resulting in difficulty in quickly heating. However, the other parts of the parts are arranged at intervals with the furnace cavity and can be heated normally, thus resulting in uneven heating of the whole parts, seriously affecting the heat treatment quality of the parts. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sealed box-type multi-purpose furnace, which can effectively improve the heating uniformity of parts and improve the heat treatment quality.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A sealed box-type multi-purpose furnace includes a furnace body, a furnace cavity arranged inside the furnace body, and a heating part arranged on the side wall of the furnace cavity; in addition, the multi-purpose furnace further includes a placement rack slidably arranged inside the furnace cavity. The placement rack includes a placement plate and support columns arranged at the bottom end of the placement plate. A plurality of through holes are vertically penetrated through the placement plate.

[0007] Preferably, a plurality of placement plates are provided. The plurality of placement plates are distributed up and down. Four sliding rods are vertically penetrated through the four corners of the plurality of placement plates together.

[0008] Preferably, except for the bottommost placement plate, the other placement plates are slidably connected to the sliding rods.

[0009] Preferably, a plurality of mutually parallel through grooves are horizontally penetrated through each sliding rod from top to bottom, and pins are horizontally penetrated between the through grooves of adjacent two sliding rods.

[0010] Preferably, a first sliding groove is arranged at the bottom end of the furnace cavity, and a first sliding block which is slidably matched with the first sliding groove is arranged at the bottom end of the support column.

[0011] Preferably, the multi-purpose furnace further includes a drag bar, a hook provided at the end of the drag bar, and a hook ring provided at the edge of any one of the placing plates and adapted to the hook.

[0012] Preferably, a hook is provided on the outer wall of the furnace body, and a hanging ring adapted to the hook is provided at one end of the drag bar away from the hook.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By providing a placing plate in the furnace cavity and support columns at the bottom end of the placing plate, a heat-receiving space can be formed between the placing plate, the support columns and the bottom wall of the furnace cavity, thereby preventing the components from directly contacting the bottom wall of the furnace cavity and allowing the hot air in the furnace cavity to directly diffuse into the heat-receiving space; by providing a plurality of through holes in the placing plate, the heat in the heat-receiving space can directly diffuse upward along the through holes to heat the bottom end of the components. Compared with the prior art in which the components are directly in contact with the bottom end of the furnace cavity, resulting in the bottom end of the components being blocked and difficult to be quickly heated, only a very small part (the area without through holes) of the components in the present utility model is blocked, and the heat uniformity is greatly improved compared with the prior art; in addition, in actual implementation, the placing plate is made of a material with good heat conductivity, and in the area without through holes, the heat can still quickly be conducted along the placing plate to the surface of the components, improving the heat uniformity of the components and thus improving the heat treatment quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure view of the present utility model in the front view direction;

[0016] Figure 2 is a schematic cross-sectional structure view of the present utility model in the top view direction;

[0017] Figure 3 is a schematic cross-sectional view of the placing plate of the present utility model in the top view direction;

[0018] Figure 4 is a schematic cross-sectional structure view of the present utility model in the left view direction;

[0019] In the figure: 100 - furnace body, 110 - furnace cavity, 130 - placing plate, 140 - support column, 150 - through hole, 160 - slide bar, 170 - through groove, 180 - plug pin, 190 - first chute, 200 - first slider, 220 - drag bar, 230 - hook, 240 - hook ring, 250 - hook, 260 - hanging ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Embodiment 1

[0021] A sealed box-type multi-purpose furnace, such as Figure 1 , 2 andFigure 4 As shown, it includes a furnace body 100, a furnace chamber 110 disposed inside the furnace body 100, and a heating part disposed on the side wall of the furnace chamber 110. The heating part is a conventional setting and can be a heating tube (not shown in the figure). In addition, there is an air extraction device for extracting the air in the furnace chamber 110, such as an air extractor and an air extraction pipe, etc. (prior art, not elaborated here). In addition, the multi-purpose furnace further includes a placement rack slidably disposed inside the furnace chamber 110. The placement rack includes a placement plate 130 and support columns 140 disposed at the bottom end of the placement plate 130. A plurality of through holes 150 are vertically penetrated through the placement plate 130. Further, a first sliding groove 190 is disposed at the bottom end of the furnace chamber 110, and one end of the first sliding groove 190 close to the furnace door communicates with the outside, such as Figure 1 、 2 shown in FIGS. 3 and 4, a first slider 200 slidably engaged with the first sliding groove 190 is disposed at the bottom end of the support column 140. Further, a furnace door (prior art, not shown in the figure) is disposed on the front side of the furnace body 100.

[0022] Working principle: Slide the placement rack out of the furnace chamber 110. During the sliding out process, the first slider 200 slides in the first sliding groove 190. Then, place the parts to be heat-treated on the placement plate 130 and slide the placement rack into the furnace chamber 110. Then, close the furnace door. Then, extract the air in the furnace chamber 110 through the air extraction device and introduce a predetermined atmosphere (prior art). Then, turn on the heating tube. During the heating process of the heating tube, the heat quickly diffuses throughout the furnace chamber 110 and at the same time diffuses into the heat-receiving space formed by the support column 140, the bottom end of the furnace chamber 110, and the placement plate 130, and then diffuses upward along the plurality of through holes 150 to the bottom end of the parts, thereby heating the bottom end of the parts. In this way, the heating speed can be greatly improved and the heating uniformity can be improved. In addition, in actual implementation, the placement plate 130 is made of a material with good heat conductivity. In the area where the through holes 150 are not provided, the heat can still quickly conduct along the placement plate 130 to the surface of the parts, improving the heating uniformity of the parts and thus improving the heat treatment quality.

[0023] Further, on the basis of Embodiment 1, such as Figure 1 and Figure 4As shown, there are multiple placement plates 130, and the multiple placement plates 130 are distributed vertically. Four sliding rods 160 are vertically penetrated through the four corners of the multiple placement plates 130. Further, except for the lowermost placement plate 130, the remaining placement plates 130 are slidably connected to the sliding rods 160. In this solution, by providing multiple placement plates 130, parts can be placed on the multiple placement plates 130 simultaneously, thereby improving the space utilization rate inside the furnace chamber 110 and heat-treating multiple parts simultaneously, improving the processing efficiency. Further, by slidably connecting the placement plates 130 to the sliding rods 160, the distance between adjacent placement plates 130 can be adjusted, thereby adapting to the heights of different parts and improving the flexibility of heat treatment.

[0024] Further, in order to limit the sliding placement plate 130 after adjusting the distance between adjacent placement plates 130 and prevent it from sliding down automatically under the action of gravity, as shown in FIGS. 1 and Figure 3 As shown, each sliding rod 160 is horizontally penetrated with a plurality of parallel through slots 170 from top to bottom, and a pin 180 is horizontally penetrated between the through slots 170 of adjacent two sliding rods 160. After the position of the placement plate 130 is adjusted, a pin 180 is inserted into the through slot 170 on the left two sliding rods 160 and closest to the bottom surface of the placement plate 130 to be limited, and another pin 180 is inserted into the through slot 170 on the right two sliding rods 160 and closest to the bottom surface of the placement plate 130 to be limited, thereby limiting the placement plate 130 and preventing it from sliding down automatically under the action of gravity.

[0025] Further, after heat treatment, the temperature inside the furnace chamber 110 is very high. In order to facilitate pulling out the placement rack from the furnace chamber 110, as shown in FIGS. Figure 1 and 2 As shown, the multi-purpose furnace further includes a towing rod 220, a hook 230 provided at the end of the towing rod 220, and a hook ring 240 provided at the edge of any one placement plate 130 and adapted to the hook 230. Specifically, during implementation, after heat treatment, the staff holds the end of the towing rod 220 away from the hook 230, hooks the hook 230 on the hook ring 240, and then drags the placement rack out towards the furnace door.

[0026] Further, as shown in FIGS. Figure 1 and Figure 2 As shown, a hook 250 is provided on the outer wall of the furnace body 100, and a hanging ring 260 adapted to the hook 250 is provided at the end of the towing rod 220 away from the hook 230. In this solution, by providing the hook 250 and the hanging ring 260, when the towing rod 220 is not in use, the hanging ring 260 can be hung on the hook 250, thereby storing the towing rod 220 for easy access by the staff.

[0027] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", "transverse", etc. are based on the Figure 1 orientation or positional relationship shown, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

Claims

1. A sealed box-type multi-purpose furnace, comprising a furnace body (100), a furnace cavity (110) arranged inside the furnace body (100), and a heating part arranged on the side wall of the furnace cavity (110); characterized in that, It further includes a placement rack slidably arranged inside the furnace cavity (110). The placement rack includes a placement plate (130) and support columns (140) arranged at the bottom end of the placement plate (130). A plurality of through holes (150) are vertically penetrated through the placement plate (130).

2. The sealed box-type multi-purpose furnace according to claim 1, characterized in that, A plurality of the placement plates (130) are provided. The plurality of placement plates (130) are distributed vertically. Four sliding rods (160) are vertically penetrated through the four corners of the plurality of placement plates (130) together.

3. The sealed box-type multi-purpose furnace according to claim 2, characterized in that, Except for the lowermost placement plate (130), the remaining placement plates (130) are slidably connected to the sliding rods (160).

4. A sealed box-type multi-purpose furnace according to claim 2, characterized in that, A plurality of mutually parallel through grooves (170) are horizontally penetrated through each sliding rod (160) from top to bottom. Bolts (180) are horizontally penetrated between the through grooves (170) of adjacent two sliding rods (160).

5. A sealed box-type multi-purpose furnace according to claim 1, characterized in that, A first sliding groove (190) is arranged at the bottom end of the furnace cavity (110). A first sliding block (200) which is slidably matched with the first sliding groove (190) is arranged at the bottom end of the support column (140).

6. The sealed box-type multi-purpose furnace according to claim 2, characterized in that, It further includes a towing rod (220), a hook (230) arranged at the end of the towing rod (220), and a hook ring (240) arranged at the edge of any one placement plate (130) and adapted to the hook (230).

7. A sealed box-type multi-purpose furnace according to claim 6, characterized in that, A hanging hook (250) is arranged on the outer wall of the furnace body (100). A hanging ring (260) which is adapted to the hanging hook (250) is arranged at the end of the towing rod (220) away from the hook (230).

Images