A temperature control device and sintering furnace for low-temperature liquid phase sintering in powder metallurgy

Abstract

This utility model relates to a temperature control device for a low-temperature liquid phase sintering furnace in powder metallurgy. It is applied to the sintering furnace body, with a turntable rotatably connected to the bottom center. Four sets of sliding grooves are formed on the bottom surface of the furnace body, each groove containing an L-shaped moving rod. The horizontal section of the moving rod is located within the groove, and a convex shaft is provided on the lower surface of the horizontal section. Four sets of arc-shaped grooves are formed on the turntable, with each convex shaft located within its corresponding arc-shaped groove. Several horizontal bars are integrally formed on the inner side of the vertical section of the moving rod. The free ends of the horizontal bars pass through the side wall of the sintering furnace body and are located within the furnace body. Heating tubes are connected to the free ends of the horizontal bars. This device can adjust the position of the heating tubes within the sintering furnace body according to workpieces of different sizes, preventing excessive distance between the heating tubes and the workpiece, which would lead to heat loss during transfer. It is suitable for industrial production and has strong practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of sintering furnaces, and particularly relates to a temperature control device and sintering furnace for a low-temperature liquid phase sintering furnace in powder metallurgy. Background Technology

[0002] A patent titled "A Sintering Furnace" (application number CN202120211139.6) is disclosed in the existing Chinese patent database. This sintering furnace includes a furnace body, a furnace door, and an anti-fall mechanism. The furnace body has a lower opening; the furnace door supports products and engages with the furnace body through the opening; the anti-fall mechanism includes a stop member located below the furnace body and capable of retracting relative to the furnace body. Before the furnace door engages with the furnace body, the stop member is retracted relative to the furnace body to allow the door to engage; after the door engages with the furnace body, the stop member is extended relative to the furnace body to prevent the door from falling. The sintering furnace provided by this utility model includes a stop member located below the furnace body and capable of retracting relative to the furnace body. Before the furnace door engages with the furnace body, the stop member is retracted relative to the furnace body to allow the door to engage; after the door engages with the furnace body, the stop member is extended relative to the furnace body to prevent the door from falling. Its structure is novel, convenient to use, and stable and reliable.

[0003] In existing technologies, the heating element in a sintering furnace is basically located on the inner wall of the furnace. When the workpiece is placed into the furnace, the heating element is a certain distance away from the workpiece, which increases the heat loss during the transfer process. Therefore, this paper aims to propose a temperature control device and sintering furnace for a low-temperature liquid phase sintering furnace in powder metallurgy, which can adjust the distance between the heating tube and the workpiece during the sintering process, and can conduct heat more efficiently and accurately. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to improve the heat transfer efficiency during the sintering process in the sintering furnace and avoid heat loss. In order to improve its shortcomings, this utility model provides a temperature control device for a powder metallurgy low-temperature liquid phase sintering furnace and a sintering furnace.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A temperature control device for a low-temperature liquid phase sintering furnace in powder metallurgy is applied to the sintering furnace body. A turntable is rotatably connected to the bottom center of the sintering furnace body. Four sets of sliding grooves are opened on the bottom surface of the sintering furnace body, and the four sets of sliding grooves are respectively set at the center of each side of the sintering furnace body. An L-shaped moving rod is slidably connected in each sliding groove. The horizontal section of the moving rod is set in the sliding groove, and a convex shaft is set on the lower surface of the horizontal section of the moving rod. Four sets of arc-shaped grooves are opened on the turntable body, and each convex shaft is set in the corresponding arc-shaped groove. Several horizontal bars are integrally set on the inner side of the vertical section of the moving rod. The free end of the horizontal bar passes through the side wall of the sintering furnace body and is set in the sintering furnace body. An electric heating tube is connected to the free end of the horizontal bar.

[0007] Compared with the prior art, the beneficial effects of this utility model are: due to the structural cooperation between the rotating disk and the moving rod, the movement of the moving rod in the horizontal direction can be controlled by controlling the rotation of the rotating disk. The position of the heating tube in the sintering furnace can be adjusted according to the workpiece of different sizes, avoiding excessive distance between the heating tube and the workpiece, which would lead to heat loss during the transfer process. This device is suitable for industrial production and has strong practicality.

[0008] As a preferred embodiment, the arc-shaped grooves are radially distributed around the axis of the turntable body. When the convex shaft moves from one end of the arc-shaped groove to the other end, the moving rod moves within the groove as the position of the convex shaft changes.

[0009] As a preferred embodiment, the crossbar is a hollow bar, and an insertion rod is integrally provided on the surface of the heating tube facing the free end of the crossbar. The insertion rod is inserted into the hollow bar and locked to the crossbar by bolts.

[0010] As a preferred embodiment, the side wall of the sintering furnace body is provided with a through channel, and the crossbar is arranged through the through channel.

[0011] As a preferred embodiment, the cross-section of the slide is T-shaped, and the horizontal section of the moving rod is I-shaped.

[0012] As a preferred embodiment, a sintering furnace includes the aforementioned temperature control device for a low-temperature liquid phase sintering furnace for powder metallurgy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the bottom structure of this utility model.

[0015] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.

[0016] Figure 4 This is a schematic diagram of the cooperation structure between the sliding groove and the moving rod in this utility model.

[0017] In the figure: 1 Sintering furnace body, 2 Turntable body, 3 Slide groove, 4 Moving rod, 401 Horizontal section, 402 Vertical section, 5 Convex shaft, 6 Arc groove, 7 Horizontal bar, 8 Heating tube, 801 Insertion rod part, 9 Through channel, 10 Reducer. Detailed Implementation

[0018] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-4 As shown, a temperature control device for a low-temperature liquid phase sintering furnace in powder metallurgy is applied to a sintering furnace body 1. A turntable body 2 is rotatably connected to the bottom center of the sintering furnace body 1. The turntable body 2 is driven by an external reducer 10. The drive shaft end of the reducer 10 is connected to the turntable body 2. Four sets of sliding grooves 3 are opened on the bottom surface of the sintering furnace body 1. The four sets of sliding grooves 3 are respectively set at the center of each side of the sintering furnace body 1. An L-shaped moving rod 4 is slidably connected in each sliding groove 3. The horizontal section 401 of the moving rod 4 is set in the sliding groove 3. A convex shaft 5 is set on the lower surface of the horizontal section 401 of the moving rod 4. Four sets of arc-shaped grooves 6 are opened on the turntable body 2. Each convex shaft 5 is set in the corresponding arc-shaped groove 6. Several horizontal bars 7 are integrally set on the inner side of the vertical section 402 of the moving rod 4. The free end of the horizontal bar 7 passes through the side wall of the sintering furnace body 1 and is set in the sintering furnace body 1. An electric heating tube 8 is connected to the free end of the horizontal bar 7. The arc-shaped grooves 6 are radially distributed around the axis of the turntable 2. When the convex shaft 5 moves from one end of the arc-shaped groove 6 to the other, the moving rod 4 moves within the slide 3 as the position of the convex shaft 5 changes. The crossbar 7 is a hollow rod, and an insertion rod portion 801 is integrally provided on the surface of the heating tube 8 facing the free end of the crossbar 7. The insertion rod portion 801 is inserted into the hollow rod and locked to the crossbar 7 by bolts. A through channel 9 is opened on the side wall of the sintering furnace body 1, and the crossbar 7 is set through the through channel 9. The cross section of the slide 3 is T-shaped, and the horizontal section 401 of the moving rod 4 is I-shaped.

[0020] Specifically, a sintering furnace includes the aforementioned temperature control device for a low-temperature liquid phase sintering furnace for powder metallurgy.

[0021] In operation, the operator places the workpiece to be sintered into the sintering furnace body 1, and then controls the reducer 10 to drive the turntable body 2 to rotate. When the turntable body 2 rotates clockwise, the cam shaft 5 gradually moves towards the center of the turntable body 2 within the arc groove 6, thereby causing the entire moving rod 4 to move towards the inside of the sintering furnace body 1. This causes the heating tubes located in the sintering furnace body 1 to gradually approach the workpiece, reducing the distance between the workpiece and the heating tubes. Conversely, when the turntable body 2 rotates counterclockwise, the cam shaft 5 gradually moves towards the edge of the turntable body 2 within the arc groove 6, thereby causing the entire moving rod 4 to move towards the outside of the sintering furnace body 1. This causes the heating tubes located in the sintering furnace body 1 to gradually move away from the workpiece. In this way, the position of the heating tubes in the sintering furnace body 1 can be adjusted according to the different sizes of workpieces, avoiding excessive distance between the heating tubes and the workpiece, which would lead to heat loss during the transfer process.

[0022] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A powder metallurgy low temperature liquid phase sintering furnace temperature control device, characterized by: It is applied to the sintering furnace body (1). The bottom center of the sintering furnace body (1) is rotatably connected to a turntable body (2). Four sets of sliding grooves (3) are opened on the bottom surface of the sintering furnace body (1). The four sets of sliding grooves (3) are respectively set at the center of each side of the sintering furnace body (1). An L-shaped moving rod (4) is slidably connected in each sliding groove (3). The horizontal section (401) of the moving rod (4) is set in the sliding groove (3). A convex shaft (5) is set on the lower surface of the horizontal section (401) of the moving rod (4). Four sets of arc grooves (6) are opened on the turntable body (2). Each convex shaft (5) is set in the corresponding arc groove (6). Several horizontal rods (7) are integrally set on the inner side of the vertical section (402) of the moving rod (4). The free end of the horizontal rod (7) passes through the side wall of the sintering furnace body (1) and is set in the sintering furnace body (1). An electric heating tube (8) is connected to the free end of the horizontal rod (7).

2. The powder metallurgy low-temperature liquid phase sintering furnace temperature control device according to claim 1, characterized in that: The arc-shaped groove (6) is radially distributed around the axis of the turntable body (2). When the convex shaft (5) moves from one end of the arc-shaped groove (6) to the other end, the moving rod (4) moves in the slide groove (3) as the position of the convex shaft (5) changes.

3. The powder metallurgy low-temperature liquid phase sintering furnace temperature control device according to claim 2, characterized in that: The crossbar (7) is a hollow bar. An insert rod (801) is integrally provided on the surface of the heating tube (8) facing the free end of the crossbar (7). The insert rod (801) is inserted into the hollow bar and locked to the crossbar (7) by bolts.

4. The temperature control device for a powder metallurgy low-temperature liquid phase sintering furnace according to claim 3, characterized in that: The side wall of the sintering furnace body (1) is provided with a through channel (9), and the crossbar (7) is set through the through channel (9).

5. The temperature control device for a powder metallurgy low-temperature liquid phase sintering furnace according to claim 4, characterized in that: The cross-section of the slide (3) is T-shaped, and the cross-section of the horizontal section (401) of the moving rod (4) is I-shaped.

6. A sintering furnace, characterized in that: Including the temperature control device for a powder metallurgy low-temperature liquid phase sintering furnace as described in any one of claims 1-5.

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