Powder metallurgy sintering net rack

Abstract

The utility model discloses a powder metallurgy sintering net rack which comprises a cover net rack body hinged to one end of a sintering net bottom frame, asymmetrical bottom frame handles are arranged on the two sides of the sintering net bottom frame, mounting holes are formed in the opposite sides of the bottom frame handles, an interlayer net rack body is arranged in the sintering net bottom frame, and connecting pieces are arranged on the interlayer net rack body. And the interlayer net racks are detachably butted in the sintering net bottom frame through the connecting pieces and the mounting holes, and the interlayer net racks have various types for selection. According to the utility model, through the arrangement of the turnover cover net rack, workpieces are flatly placed in the flatter sintering net bottom frame, and the interlayer net rack is matched for layered placement, so that the sintering device is more orderly and reasonable, and the sintering quality is effectively improved; by using different types of interlayer net racks, workpieces with different heights and radial directions can be sintered and processed in the same batch, and the process limitation is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder metallurgy technical field more specifically, it relates to powder metallurgy sintering net rack. BACKGROUND

[0002] The batch processing of small gears is basically produced by powder metallurgy, which includes raw material selection, powder preparation, pressing forming, sintering treatment, finishing and post-processing procedures. The metal is broken into powder by means of atomization, and then collected and poured into a mold for pressing. At this time, the workpiece has been formed, but it is only a state of compacting powder, with extremely low hardness, which needs to be changed by sintering to obtain higher strength and toughness. During the whole sintering process, the pressed workpieces are generally thrown in the sintering frame, dozens or hundreds in a frame, and then sent into the sintering furnace for treatment. This involves several problems: first, the workpieces are placed too casually, which may have a negative impact on the processing quality; second, the workpieces are placed in an open sintering frame, which is easy to fall off during the sintering conveying process; third, this way has not considered the situation of finding a specific object in the workpiece pile since the beginning of the design, and is only suitable for the processing and production of the same size and shape batch. SUMMARY

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a powder metallurgy sintering net rack to solve one or more of the above problems.

[0004] To achieve the above purpose, the utility model provides the following technical scheme:

[0005] The powder metallurgy sintering net rack comprises a cover net rack hinged at one end of a sintering net bottom frame, the two sides of the sintering net bottom frame are provided with asymmetric bottom frame handles, the opposite sides of the bottom frame handles are provided with mounting holes, the sintering net bottom frame is provided with a partition net rack, the partition net rack is provided with connecting pieces, and the partition net rack is detachably butted in the sintering net bottom frame through the connecting pieces and the mounting holes.

[0006] Further, all the surfaces of the sintering net bottom frame are longitudinal and transverse intersecting mesh surfaces, the main plane of the cover net rack is a longitudinal and transverse intersecting mesh surface, and the bottom end of the sintering net bottom frame is provided with a reinforcing frame.

[0007] Further, the mounting holes on the bottom frame handle are arranged below half the depth of the sintering net bottom frame, all the lateral surfaces of the sintering net bottom frame are provided with transverse mesh strips at the height median lines, and the connecting pieces of the partition net rack are connecting columns and / or hooks.

[0008] Further, the main plane of the partition net rack is a longitudinal and transverse intersecting mesh surface.

[0009] Further, a main through groove is arranged at the center of the main plane of the partition net rack.

[0010] Further, the main plane of the partition layer net rack is provided with a secondary through groove at four corners, and the horizontal sectional area of the secondary through groove is not greater than one fifth of the area of the whole main plane.

[0011] In conclusion, the utility model has the following beneficial effects: through the setting of the reversible cover net rack, the workpiece is placed on the more flattened sintering net bottom frame, and is placed in layers with the partition layer net rack, which is more orderly and reasonable, and effectively improves the sintering quality; through the use of different types of partition layer net racks, the workpieces with different heights and radial directions can be sintered and processed in the same batch, and the process limitation is significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The use state schematic view of one embodiment provided by the utility model;

[0013] Figure 2 The opening state schematic view of one embodiment provided by the utility model;

[0014] Figure 3 The partition layer net rack schematic view (without connecting piece) of example 1 in the utility model;

[0015] Figure 4 The partition layer net rack schematic view (without connecting piece) of example 2 in the utility model;

[0016] Figure 5 The partition layer net rack schematic view (without connecting piece) of example 3 in the utility model.

[0017] In the drawing: 1, sintering net bottom frame; 2, cover net rack; 3, bottom frame handle; 4, partition layer net rack; 5, main through groove; 6, secondary through groove. DETAILED DESCRIPTION

[0018] Example 1

[0019] The following will be combined with the drawings Figures 1-3 The utility model will be further explained in detail.

[0020] Powder metallurgy sintering net rack, such as Figure 1 and Figure 2As shown, the main body is a flat sintered mesh bottom frame 1. A cover mesh frame 2 is hinged to the front end of the sintered mesh bottom frame 1. The other end of the cover mesh frame 2 has a lever-type latch, which can be easily separated from the sintered mesh bottom frame 1 by a slight pull. The main plane of the cover mesh frame 2 and the four sides and bottom of the sintered mesh bottom frame 1 are all crisscrossed mesh surfaces. A welded reinforcing frame is provided at the bottom of the sintered mesh bottom frame 1 to improve overall strength. All sides of the sintered mesh have transverse mesh strips near or slightly below the midline of the frame height. Asymmetrical bottom frame handles 3 are provided on the left and right sides of the sintered mesh bottom frame 1. This design is mainly for the subsequent connection of the partition mesh frame 4 with the bottom frame handles 3. After high temperature, the partition mesh frame 4 may experience localized expansion between components, requiring external force for removal. If the two bottom frame handles 3 are symmetrically arranged, there is no room for operation on both sides. The staggered arrangement allows for separation through localized bending deformation and appropriate external force. Mounting holes are provided on the opposite sides of the bottom frame handle 3. These holes should be located less than half the depth of the sintered mesh bottom frame 1 to ensure that the workpiece does not exceed the opening of the sintered mesh bottom frame 1 after storage, thus affecting the use of the cover frame 2. The depth of the sintered mesh bottom frame 1 needs to be reasonable to accommodate taller workpieces. This depth design can easily lead to low space utilization within the sintered mesh bottom frame 1; therefore, a detachable partition frame 4 needs to be added. Figure 3 As shown, the main plane of the partition frame 4 is a crisscrossing mesh surface. The number of meshes can be multiple, or none can be inserted, depending on the actual dimensions of the sintered mesh base frame 1 and the workpiece dimensions. The partition frame 4 is equipped with connectors, which can be connecting posts or hooks, or both. The connectors are inserted into the mounting opening of the base frame handle 3 and hooked onto the transverse mesh strips on the side of the sintered mesh base frame 1, thus completing the connection between the partition frame 4 and the sintered mesh base frame 1.

[0021] Example 2

[0022] The following is in conjunction with the appendix Figure 4 The present invention will be described in further detail below.

[0023] The difference from Example 1 is that, as Figure 4 As shown, a main through groove 5 is provided in the center of the main plane of the partition frame 4. The main through groove 5 can place workpieces of different sizes, with large height and thickness in the same batch. The main plane of the sintered mesh bottom frame 1 and the main plane area of ​​the partition frame 4 are used to place a total of two layers of small workpieces, and the center position is used to place large workpieces that pass through the partition frame 4.

[0024] Example 3

[0025] The following is in conjunction with the appendix Figure 5 The present invention will be described in further detail below.

[0026] The difference from Example 1 is that, as Figure 5As shown, the center of the main plane of the partition net rack 4 is provided with a main through groove 5, and four equal secondary through grooves 6 are provided at the four corners of the main plane of the partition net rack 4. The shape and number of the main through groove 5 and the secondary through groove 6 are not fixed, which can be a pipe groove or a block groove. The main through groove 5 and the secondary through groove 6 can place the same batch of different sizes, high and thick large workpiece objects, and divide different size intervals, and the control is more specific and hierarchical. The horizontal cross-sectional area of the secondary through groove 6 is not greater than one fifth of the area of the main plane, and it is meaningful to ensure that a sufficient number of small-size workpieces are placed on the partition net rack 4. The main plane of the sintering net bottom frame 1 and the main plane area of the partition net rack 4 place a total of two layers of small-size workpieces, and a large-size workpiece is placed at the center position and penetrates through the partition net rack 4.

[0027] It should be noted that the specific embodiments are merely an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, as long as the modifications are within the scope of the claims of the present application.

Claims

1. A powder metallurgical sintered grid, characterized in that: It includes cover net frame (2) hinged at one end of sintering net bottom frame (1), both sides of the sintering net bottom frame (1) are provided with asymmetric bottom frame handle (3), the opposite sides of the bottom frame handle (3) are provided with mounting hole, the sintering net bottom frame (1) is provided with partition layer net frame (4), the partition layer net frame (4) is provided with connecting piece, and the partition layer net frame (4) is detachably butted in the sintering net bottom frame (1) through connecting piece and mounting hole.

2. The powder metallurgy sintered lattice according to claim 1, characterized in that: All surfaces of the sintering net bottom frame (1) are longitudinal and horizontal interlaced net surfaces, the main plane of the cover net frame (2) is longitudinal and horizontal interlaced net surface, and the bottom end of the sintering net bottom frame (1) is provided with reinforcing frame.

3. The powder metallurgy sintered lattice according to claim 2, characterized in that: The mounting hole of the bottom frame handle (3) is arranged below half of the depth of the sintering net bottom frame (1), all side surfaces of the sintering net bottom frame (1) are provided with horizontal net strips at the height median line, and the connecting piece of the partition layer net frame (4) is connecting column and / or hook.

4. The powder metallurgy sintered lattice according to claim 3, characterized in that: The main plane of the partition layer net frame (4) is longitudinal and horizontal interlaced net surface.

5. The powder metallurgy sintered lattice according to claim 4, characterized in that: The main plane of the partition layer net frame (4) is provided with main through groove (5) in the center.

6. The powder metallurgy sintered lattice according to claim 5, characterized in that: The main plane of the partition layer net frame (4) is provided with secondary through groove (6) in the four corners, and the area of the horizontal section of the secondary through groove (6) is not greater than one fifth of the area of the whole main plane.

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