Mim rotating shaft workpiece sintering device

Abstract

The utility model relates to a rotating shaft processing technical field discloses a kind of MIM rotating shaft workpiece sintering device, including sintering furnace body, inner furnace body is equipped in the sintering furnace body inner cavity, and the inner furnace body inner wall is fixed with multiple groups of sintering tube, and inner bladder bin assembly is equipped in the inner furnace body inner cavity, and the inner bladder bin assembly includes the inner bladder inserted in the inner furnace body inner cavity.When it is needed to repair the inner bladder, first open the furnace cover, then rotate the ball screw, the ball screw drives the ball silk set to move along the outer wall of the ball screw, the moving wheel at the lower end of the inner bladder moves along the moving rail, under the driving of the ball silk set, the inner bladder moves out from the inner cavity of the sintering furnace body, when the inner bladder is removed from the inner cavity of the sintering furnace body, the staff can conveniently repair the inner bladder.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft processing technology, specifically to a sintering device for MIM rotating shaft workpieces. Background Technology

[0002] Metal powder injection molded parts (MIM) require sintering, primarily because the resulting "green blank" contains binder, resulting in a loose structure, low strength, and porosity. Sintering, through high-temperature heating, causes the binder to volatilize or decompose, leading to diffusion, melting, and bonding between metal powder particles. This process eliminates porosity, increases density, and endows the workpiece with metallic properties close to theoretical density. This process not only significantly enhances the mechanical properties of the workpiece, such as strength, hardness, and wear resistance, but also improves its dimensional accuracy and surface quality, ensuring that the final product meets the mechanical and functional requirements of precision components. It is a key step in achieving mass production of high-performance metal parts using the MIM process.

[0003] However, the sintering inner chamber in existing MIM workpiece sintering equipment is often fixed to the inner wall of the furnace body by welding. This not only makes it inconvenient to maintain the furnace body, but also makes it inconvenient to remove the inner chamber for repair when it is damaged. Utility Model Content

[0004] The purpose of this invention is to provide a sintering device for MIM rotating shaft workpieces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sintering device for MIM rotating shaft workpieces, comprising a sintering furnace body, an inner furnace body within the inner cavity of the sintering furnace body, multiple sets of sintering tubes fixedly arranged on the inner wall of the inner furnace body, an inner liner assembly within the inner cavity of the inner furnace body, the inner liner assembly including an inner liner inserted into the inner cavity of the inner furnace body, multiple sets of material placement frames inserted into the inner wall of the inner liner, two sets of symmetrical horizontal blocks fixedly arranged on the outer wall of the material placement frames, multiple sets of symmetrical horizontal grooves evenly opened on both sides of the inner wall of the inner liner, multiple sets of symmetrical moving wheels provided at the lower end of the inner liner, an insert block fixedly arranged on one side of the lower end of the inner liner, a fixed frame fixedly arranged at the bottom end of the inner furnace body, a ball screw inserted in the middle of the fixed frame, a ball screw sleeve sleeved on the outer wall of the ball screw, and two sets of symmetrical moving rails fixedly arranged at the bottom end of the inner furnace body.

[0006] As a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, the inner wall of the sintering furnace body is fixedly provided with multiple sets of reinforcing frames, and the end of the reinforcing frame away from the sintering furnace body is fixedly connected to the inner furnace body.

[0007] In a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, the material placement frame is movably inserted into the inner wall of the inner liner, and the horizontal block is movably inserted into one of the horizontal grooves.

[0008] As a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, the upper end of the material placement frame is uniformly provided with multiple sets of through holes.

[0009] In a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, the movable wheel is movably inserted into the movable rail.

[0010] As a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, the ball screw is rotatably inserted into the middle of the fixed frame, the upper end of the ball screw sleeve is provided with a slot that cooperates with the insert block, and the insert block is movably inserted into the slot.

[0011] As a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, wherein: a furnace cover is movably inserted at one end of the sintering furnace body, a plurality of threaded columns are fixedly provided at one end of the outer wall of the sintering furnace body, a locking bolt is threadedly inserted at the middle end of the threaded column, a through hole that cooperates with the locking bolt is opened on the inner wall of the furnace cover, and the front end of the locking bolt moves through the outer wall of the sintering furnace body and is movably inserted in the through hole.

[0012] As a preferred embodiment of the MIM rotating shaft workpiece sintering device of this utility model, a rotating handle is fixedly provided at the end of the locking bolt away from the furnace cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are: When the inner liner needs repair, first open the furnace cover, then rotate the ball screw. The ball screw drives the ball sleeve to move along the outer wall of the ball screw. The moving wheel at the lower end of the inner liner moves along the moving rail. Driven by the ball sleeve, the inner liner moves outward from the inner cavity of the sintering furnace body. Once the inner liner is removed from the inner cavity of the sintering furnace body, the staff can easily carry out the repair.

[0014] When maintenance of the inner furnace body is required, first remove the inner liner from the inner cavity of the sintering furnace body, then slightly lift the inner liner upwards so that the insert block at the lower end of the inner liner moves out of the slot opened in the ball screw sleeve. At this time, move the inner liner outwards again to disassemble it. After the inner liner is disassembled, without the obstruction of the inner liner, it is more convenient for the staff to maintain the inner furnace body. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure provided for an embodiment of the present utility model; Figure 2 A three-dimensional structural diagram of the sintering furnace body provided in an embodiment of this utility model; Figure 3 This is a partially exploded three-dimensional structural diagram of the inner liner assembly provided in an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the furnace cover provided for an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Sintering furnace body; 2. Inner furnace body; 3. Reinforcing frame; 4. Sintering tube; 5. Inner liner assembly; 51. Inner liner; 52. Material placement frame; 53. Horizontal block; 54. Horizontal groove; 55. Moving wheel; 56. Ball screw; 57. Ball screw sleeve; 58. Insert block; 59. Fixed frame; 6. Moving rail; 7. Furnace cover; 8. Threaded column; 9. Locking bolt; 10. Rotary handle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4This is the first embodiment of the present invention, which provides a sintering device for MIM rotating shaft workpieces, including a sintering furnace body 1, an inner furnace body 2 in the inner cavity of the sintering furnace body 1, multiple sets of sintering tubes 4 fixedly arranged on the inner wall of the inner furnace body 2, an inner liner assembly 5 in the inner cavity of the inner furnace body 2, the inner liner assembly 5 including an inner liner 51 inserted into the inner cavity of the inner furnace body 2, multiple sets of material placement frames 52 inserted in the inner wall of the inner liner 51, two sets of symmetrical horizontal blocks 53 fixedly arranged on the outer wall of the material placement frames 52, multiple sets of symmetrical horizontal grooves 54 evenly opened on both sides of the inner wall of the inner liner 51, multiple sets of symmetrical moving wheels 55 arranged at the lower end of the inner liner 51, an insert block 58 fixedly arranged on one side of the lower end of the inner liner 51, a fixed frame 59 fixedly arranged at the bottom of the inner wall of the inner furnace body 2, a ball screw 56 inserted in the middle of the fixed frame 59, a ball screw sleeve 57 sleeved on the outer wall of the ball screw 56, and two sets of symmetrical moving rails 6 fixedly arranged at the bottom of the inner furnace body 2.

[0020] Multiple sets of reinforcing frames 3 are fixedly provided on the inner wall of the sintering furnace body 1. The end of the reinforcing frame 3 away from the sintering furnace body 1 is fixedly connected to the inner furnace body 2. The material placement frame 52 is movably inserted into the inner wall of the inner liner 51. The horizontal block 53 is movably inserted into one of the horizontal grooves 54. Multiple sets of through holes are evenly opened through the upper end of the material placement frame 52. The moving wheel 55 is movably inserted into the moving rail 6. The ball screw 56 is rotatably inserted into the middle of the fixed frame 59. The upper end of the ball screw sleeve 57 is provided with a slot that cooperates with the insertion block 58. The insertion block 58 is movably inserted into the slot.

[0021] When the inner liner 51 needs repair, first open the furnace cover 7, then rotate the ball screw 56. The ball screw 56 drives the ball sleeve 57 to move along the outer wall of the ball screw 56. The moving wheel 55 at the lower end of the inner liner 51 moves along the moving rail 6. Driven by the ball sleeve 57, the inner liner 51 moves outward from the inner cavity of the sintering furnace body 1. After the inner liner 51 is moved out of the inner cavity of the sintering furnace body 1, the staff can easily repair the inner liner 51. When the inner furnace body 2 needs maintenance, first move the inner liner 51 out of the inner cavity of the sintering furnace body 1 through the above operation, then lift the inner liner 51 slightly upward so that the insert block 58 set at the lower end of the inner liner 51 moves out of the slot opened in the ball sleeve 57. At this time, move the inner liner 51 outward again to disassemble the inner liner 51. After the inner liner 51 is disassembled, without the obstruction of the inner liner 51, the staff can more easily maintain the inner furnace body 2.

[0022] By sliding the horizontal block 53 along the horizontal groove 54, the distance between the material placement frame 52 and the material placement frame 52 can be adjusted, thereby allowing for flexible arrangement of the internal space of the inner liner 51. This allows for the placement of green blanks of different heights on the upper end of the material placement frame 52, thus making full use of the internal space of the inner liner 51, sintering more green blanks at once, and increasing the sintering rate.

[0023] Please refer to Figure 1 (Sintering Furnace Body) and Figure 4 (Sintering Tube), which is the second embodiment of this utility model. The difference between this embodiment and the first embodiment is that: a furnace cover 7 is movably inserted into one end of the sintering furnace body 1, and multiple sets of threaded columns 8 are fixedly provided on one end of the outer wall of the sintering furnace body 1. A locking bolt 9 is threadedly inserted into the middle end of the threaded column 8. A through hole that cooperates with the locking bolt 9 is opened on the inner wall of the furnace cover 7. The front end of the locking bolt 9 moves through the outer wall of the sintering furnace body 1 and is movably inserted into the through hole.

[0024] A handle 10 is fixedly provided at the end of the locking bolt 9 away from the furnace cover 7.

[0025] When the device is needed for sintering, and the inner liner 51 is inside the inner furnace body 2, the furnace cover 7 is placed on one end of the sintering furnace body 1, so that the through holes of the furnace cover 7 correspond one-to-one with the locking bolts 9. Then, the handle 10 is rotated, and the handle 10 drives the locking bolts 9 to rotate. The locking bolts 9 rotate downward along the threaded post 8, and the front end of the locking bolts 9 passes through the sintering furnace body 1 and is inserted into the through holes. At this time, the furnace cover 7 can be fixed, which makes it convenient for the staff to install the furnace cover 7.

[0026] The remaining structure is the same as that in Example 1.

[0027] It should be noted that all electrical equipment involved in this application can be powered by a storage battery or an external power source, and this application is equipped with a control system for controlling the operation of the entire equipment.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sintering apparatus for MIM rotating shaft workpieces, comprising a sintering furnace body (1), characterized in that: The sintering furnace body (1) has an inner furnace body (2) inside its cavity. Multiple sets of sintering tubes (4) are fixedly installed on the inner wall of the inner furnace body (2). An inner liner assembly (5) is located inside the inner furnace body (2). The inner liner assembly (5) includes an inner liner (51) inserted into the inner cavity of the inner furnace body (2). Multiple sets of material placement frames (52) are inserted into the inner wall of the inner liner (51). Two sets of symmetrical horizontal blocks (53) are fixedly installed on the outer wall of the material placement frames (52). Both sides of the inner wall of the inner liner (51) are... The inner furnace body (2) is provided with a variety of symmetrical horizontal grooves (54), and the lower end of the inner liner (51) is provided with a variety of symmetrical moving wheels (55). A plug (58) is fixedly provided on one side of the lower end of the inner liner (51). A fixed frame (59) is fixedly provided at the bottom of the inner wall of the inner furnace body (2). A ball screw (56) is inserted in the middle of the fixed frame (59). A ball screw sleeve (57) is sleeved on the outer wall of the ball screw (56). Two sets of symmetrical moving rails (6) are fixedly provided at the bottom of the inner furnace body (2).

2. The MIM rotating shaft workpiece sintering apparatus according to claim 1, characterized in that: Multiple sets of reinforcing frames (3) are fixedly provided on the inner wall of the sintering furnace body (1), and the end of the reinforcing frame (3) away from the sintering furnace body (1) is fixedly connected to the inner furnace body (2).

3. The MIM rotating shaft workpiece sintering apparatus according to claim 1, characterized in that: The material placement frame (52) is movably inserted into the inner wall of the inner liner (51), and the horizontal block (53) is movably inserted into one of the horizontal grooves (54).

4. The MIM rotating shaft workpiece sintering apparatus according to claim 1, characterized in that: Multiple sets of through holes are evenly opened at the upper end of the material placement frame (52).

5. The MIM rotating shaft workpiece sintering apparatus according to claim 1, characterized in that: The movable wheel (55) is movably inserted into the movable rail (6).

6. The MIM rotating shaft workpiece sintering apparatus according to claim 1, characterized in that: The ball screw (56) is rotatably inserted into the middle of the fixed frame (59), and the upper end of the ball sleeve (57) is provided with a slot that cooperates with the insert block (58). The insert block (58) is movably inserted into the slot.

7. The MIM rotating shaft workpiece sintering apparatus according to claim 1, characterized in that: A furnace cover (7) is movably inserted into one end of the sintering furnace body (1). Multiple sets of threaded columns (8) are fixedly provided on one end of the outer wall of the sintering furnace body (1). A locking bolt (9) is threaded into the middle end of the threaded column (8). A through hole that cooperates with the locking bolt (9) is opened on the inner wall of the furnace cover (7). The front end of the locking bolt (9) moves through the outer wall of the sintering furnace body (1) and is movably inserted into the through hole.

8. The MIM rotating shaft workpiece sintering apparatus according to claim 7, characterized in that: The locking bolt (9) is fixed with a throttle (10) at the end away from the furnace cover (7).

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