Sintering kiln structure

Abstract

The utility model relates to the technical field of kilns, in particular to a sintering kiln structure which comprises a sintering kiln body and a kiln cover, and a heating piece is arranged in the sintering kiln body. The sintering inner container comprises an inner container main body, a plurality of placing grooves formed in the inner wall of the inner container main body and a filler strip connected to the bottom of the inner container main body; the supporting piece is arranged at the bottom of the inner cavity of the sintering kiln main body and is used for supporting the sintering liner; the positioning piece comprises a positioning bent rod and a rotating shaft rotationally connected to the middle of the positioning bent rod, and the rotating shaft is fixedly connected with the outer wall of the inner container body; the material trays can be placed in the sintering inner container, the multiple layers of material trays can be flexibly installed according to the height and sintering capacity of workpieces, residues and the like in product sintering are collected in the sintering inner container, follow-up cleaning is facilitated, meanwhile, due to the arrangement of the sintering inner container, products in material taking and placing are prevented from falling into a hearth, and the sintering efficiency is improved. And tedious cleaning work which may damage the sintering kiln main body is omitted.

Description

Technical Field

[0001] This utility model relates to the field of kiln technology, specifically a sintering kiln structure. Background Technology

[0002] Sintering is a crucial step in material preparation. After mixing metal or ceramic powder with an organic binder, the initial shape of the part is obtained through pressing or injection molding. This is followed by debinding and sintering. The ultimate goal of sintering is to densify the powder and remove most of the porosity. The accuracy, uniformity, and heating / cooling rates of the kiln directly determine the performance, consistency, and yield of the final product. Vacuum sintering kilns use thermocouples to monitor the furnace temperature in real time, facilitating the adjustment of heater power and thus controlling the furnace temperature. During product sintering, to maintain stable sintering and ensure temperature transfer, the product must be placed stably. Current sintering technologies sometimes use trays to directly place the product into the furnace or pallets to support the product within the furnace.

[0003] The vacuum sintering machine with a tray module disclosed in the existing patent publication number CN223283409U includes a vacuum sintering machine body and a cover. Linear guide rails are fixedly installed on both the front and rear sides of the vacuum sintering machine body. Guide sleeves are fixedly installed on the slides of the linear guide rails. The linear guide rails are vertically arranged and the guide sleeves are horizontally arranged. A guide rod is slidably installed on each guide sleeve. The right end of the guide rod is fixedly assembled with the cover. A support base is fixedly installed on the bottom left side of the cover. The tray module is placed on the upper side of the support base. A drive component for lifting and lowering the guide sleeve is installed on the upper side of the vacuum sintering machine body. The detachable tray module on the support base allows the annular parts to be conveniently placed on the tray module after stamping and then placed inside the cover.

[0004] In the aforementioned vacuum sintering machine, a tray module connected to a cover support is used to place the product. However, during the actual sintering process, some materials in the product evaporate, and the condensed solids and sintering residue fall off, affecting the operation of the heating elements inside the furnace and impacting the subsequent sintering effect on the product. To address these issues, a sintering kiln structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a sintering kiln structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A sintering kiln structure includes a sintering kiln body and a kiln cover, wherein a heating element is provided inside the sintering kiln body;

[0008] It also includes a sintered inner liner, which includes an inner liner body, several placement slots disposed on the inner wall of the inner liner body, and a pad strip connected to the bottom of the inner liner body;

[0009] A support component installed at the bottom of the inner cavity of the sintering kiln body to support the sintering liner;

[0010] The positioning component includes a positioning bent rod and a rotating shaft rotatably connected to the middle of the positioning bent rod. The rotating shaft is fixedly connected to the outer wall of the inner liner body. A pull rod is provided between the ends of two sets of positioning bent rods located on the same side of the outer wall of the inner liner body. The end of the pull rod is rotatably connected to the positioning bent rod. A positioning groove is provided at the bottom of the end of the positioning bent rod away from the pull rod.

[0011] And a support frame, which includes a frame body installed inside the sintering kiln body and a positioning block connected to the end of the frame body and engaging with a positioning groove.

[0012] In one alternative: both sides of the inner wall of the inner liner are provided with placement grooves, and the placement grooves on both sides of the inner wall are symmetrically arranged for the sliding insertion and installation of the material tray.

[0013] In one alternative embodiment: the support member includes a support strip and several support columns connected to the bottom of the support strip. The end of the support column away from the support strip is connected to the inner wall of the sintering kiln body. There are two sets of support strips, and the number of support strips corresponds to the number of pad strips. The top of the support strip is provided with a guide strip, and the bottom of the pad strip is provided with a guide groove that cooperates with the guide strip. The end of the guide groove away from the furnace cover is connected to the outside.

[0014] In one alternative: two sets of positioning bent rods are provided on the outer walls of both sides of the inner liner body, and the ends of the positioning bent rods are connected to mounting shafts that rotatably cooperate with the pull rods.

[0015] In one alternative: a through hole is provided on the top side of the end of the positioning bent rod located at the top, and a limiting pin is inserted into the through hole; the outer wall of the inner liner body is provided with a limiting hole that engages with the limiting pin.

[0016] In one alternative: the positioning block is located on the top side of the end of the horizontal bar of the frame, and the bottom end of the vertical bar of the frame is connected to the inner wall of the sintering kiln body.

[0017] In one alternative: the furnace cover is hinged to one side of the sintering kiln body.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this utility model, a material tray can be placed in the sintering inner liner, and multiple material trays can be flexibly installed according to the height of the workpiece and the sintering capacity. The residues in the product during sintering are collected in the sintering inner liner, which facilitates subsequent cleaning. At the same time, the setting of the sintering inner liner prevents the product from falling into the furnace during material handling, saving the tedious cleaning work that may damage the main body of the sintering kiln.

[0020] In this invention, the sintered inner liner is positioned accurately and stably by means of support components, positioning components, and support frames, avoiding problems such as uneven temperature field caused by placement deviations, and improving the consistency and repeatability of sintering quality of products in the same batch and different batches. Attached Figure Description

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the opening of the main body of the sintering kiln in this utility model.

[0023] Figure 3 This is a schematic diagram of the sintered inner liner and positioning component in this utility model.

[0024] Figure 4 This is a schematic diagram of the positioning component in this utility model.

[0025] Figure 5 This is a structural schematic diagram of the support member and support frame in this utility model.

[0026] Figure 6 This is a partial cross-sectional view of the interior of the sintering kiln body in this utility model.

[0027] In the diagram: 1. Sintering kiln body; 2. Kiln cover; 3. Heating element; 4. Sintering inner liner; 5. Support element; 6. Positioning element; 7. Support frame; 41. Inner liner body; 42. Placement groove; 43. Pad strip; 44. Limiting hole; 51. Support strip; 52. Support column; 61. Positioning bent rod; 62. Rotating shaft; 63. Positioning groove; 64. Pull rod; 65. Limiting pin; 66. Perforation; 71. Frame; 72. Positioning block. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] 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.

[0030] Please see Figures 1-6 In this embodiment, a sintering kiln structure includes a sintering kiln body 1 and a kiln cover 2. The sintering kiln body 1 is provided with a heating element 3; the heating element 3 provides the temperature required for sintering.

[0031] It also includes a sintered inner liner 4, which includes an inner liner body 41, a plurality of placement slots 42 disposed on the inner wall of the inner liner body 41, and a pad strip 43 connected to the bottom of the inner liner body 41.

[0032] The support 5, installed at the bottom of the inner cavity of the sintering kiln body 1, is used to support the sintering inner liner 4;

[0033] The positioning component 6 includes a positioning bent rod 61 and a rotating shaft 62 rotatably connected to the middle of the positioning bent rod 61. The rotating shaft 62 is fixedly connected to the outer wall of the inner liner body 41. A pull rod 64 is provided between the ends of the two sets of positioning bent rods 61 located on the same side of the outer wall of the inner liner body 41. The end of the pull rod 64 is rotatably connected to the positioning bent rod 61. A positioning groove 63 is provided at the bottom of the end of the positioning bent rod 61 away from the pull rod 64.

[0034] And the support frame 7, which includes a frame 71 installed in the sintering kiln body 1 and a positioning block 72 connected to the end of the frame 71 and cooperating with the positioning groove 63; the support member 5 and the support frame 7 cooperate to support and fix the sintering inner liner 4.

[0035] Please see Figure 3The inner liner body 41 has placement grooves 42 on both sides of its inner wall, and the placement grooves 42 on both sides of the inner wall are symmetrically arranged for the sliding placement of the material tray. In actual use, the two sides of the material tray are respectively placed into the corresponding placement grooves 42. Since different parts will be placed on the material tray, the placement position of different material trays can be adjusted according to the height of the parts, and different numbers of material trays can be selected to be placed in the inner liner body 41 for sintering.

[0036] Please see Figure 5 The support member 5 includes a support bar 51 and several support columns 52 connected to the bottom of the support bar 51. The end of the support column 52 away from the support bar 51 is connected to the inner wall of the sintering kiln body 1. There are two sets of support bars 51, and the number of support bars 51 corresponds to the number of pads 43. The top of the support bar 51 is provided with a guide bar, and the bottom of the pad 43 is provided with a guide groove that cooperates with the guide bar. The end of the guide groove away from the furnace cover 2 is connected to the outside. Specifically, when the inner liner body 41 is installed, the pad 43 slides into the support bar 51. The guide groove at the bottom of the pad 43 cooperates with the guide bar to make the inner liner body 41 stably placed and pulled out.

[0037] Please see Figure 3 , 4 6. The inner liner body 41 has two sets of positioning bent rods 61 on both outer walls. The ends of the positioning bent rods 61 are connected to the mounting shafts that are rotatably engaged with the pull rods 64. Pulling the pull rods 64 downward can drive the positioning bent rods 61 to rotate around the axis of the rotating shaft 62. The two sets of positioning bent rods 61 swing synchronously, which facilitates the subsequent engagement of the positioning grooves 63 and the positioning blocks 72, or releases the engagement of the positioning grooves 63 and the positioning blocks 72.

[0038] Please see Figure 4 The top side of the end of the positioning bent rod 61 located at the top is provided with a through hole 66, and a limiting pin 65 is inserted into the through hole 66. The outer wall of the inner liner body 41 is provided with a limiting hole 44 that is engaged with the limiting pin 65. When it is necessary to limit the swing of the positioning bent rod 61, the limiting pin 65 can be inserted into the through hole 66 and the limiting hole 44.

[0039] Furthermore, the positioning block 72 is located on the top side of the end of the horizontal bar of the frame 71, and the bottom end of the vertical bar of the frame 71 is connected to the inner wall of the sintering kiln body 1.

[0040] Furthermore, the furnace cover 2 is hinged to one side of the sintering kiln body 1.

[0041] The working principle of this utility model is as follows: Open the furnace cover 2, push the sintering inner liner 4 into the sintering kiln body 1, slide the pad strip 43 along the support strip 51, and the guide groove at the bottom of the pad strip 43 cooperates with the guide strip. Before pushing it into place, pull the pull rod 64 to move it down, which can drive the positioning bent rod 61 to rotate around the axis of the rotating shaft 62. The two sets of positioning bent rods 61 swing synchronously and continue to push the sintering inner liner 4. The positioning groove 63 at the end of the positioning bent rod 61 is placed on the top of the positioning block 72. Move the pull rod 64 up, and the positioning groove 63 engages with the positioning block 72. Insert the limit pin 65 to fix the positioning bent rod 61 in the locked state.

[0042] Outside the furnace, the loaded material trays are slid into the symmetrically arranged placement slots 42 from both sides of the opening end of the sintering inner liner 4. Multiple layers of material trays can be flexibly installed according to the height of the workpiece and the sintering capacity;

[0043] When the heating element 3 is working, it heats the furnace chamber, and the heat is transferred to the product inside through the sintering inner liner 4.

[0044] After the sintering process is completed, wait for the temperature inside the furnace to drop to a safe range, open the furnace cover 2, and the material tray can be removed. Depending on the condition of the inside of the sintering inner liner 4, the sintering inner liner 4 can be selectively replaced or cleaned.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A sintering kiln structure, comprising a sintering kiln body (1) and a kiln cover (2), wherein a heating element (3) is provided inside the sintering kiln body (1); Its features are: It also includes a sintered inner liner (4), which includes an inner liner body (41), several placement slots (42) disposed on the inner wall of the inner liner body (41), and a pad strip (43) connected to the bottom of the inner liner body (41). A support (5) installed at the bottom of the inner cavity of the sintering kiln body (1) is used to support the sintering inner liner (4). The positioning component (6) includes a positioning bent rod (61) and a rotating shaft (62) rotatably connected to the middle of the positioning bent rod (61). The rotating shaft (62) is fixedly connected to the outer wall of the inner liner body (41). A pull rod (64) is provided between the ends of the two sets of positioning bent rods (61) located on the same side of the outer wall of the inner liner body (41). The end of the pull rod (64) is rotatably connected to the positioning bent rod (61). A positioning groove (63) is provided at the bottom of the end of the positioning bent rod (61) away from the pull rod (64). And a support frame (7), which includes a frame (71) installed in the main body (1) of the sintering kiln and a positioning block (72) connected to the end of the frame (71) and engaging with a positioning groove (63).

2. The sintering kiln structure according to claim 1, characterized in that: The inner liner body (41) has placement grooves (42) on both sides of its inner wall, and the placement grooves (42) on both sides of the inner wall are symmetrically arranged for the sliding placement of the material tray.

3. The sintering kiln structure according to claim 1, characterized in that: The support member (5) includes a support bar (51) and several support columns (52) connected to the bottom of the support bar (51). The end of the support column (52) away from the support bar (51) is connected to the inner wall of the sintering kiln body (1). There are two sets of support bars (51), and the number of support bars (51) corresponds to the number of pads (43). The top of the support bar (51) is provided with a guide bar, and the bottom of the pad (43) is provided with a guide groove that cooperates with the guide bar. The end of the guide groove away from the furnace cover (2) is connected to the outside.

4. The sintering kiln structure according to claim 1, characterized in that: The inner liner body (41) has two sets of positioning bent rods (61) on both sides of the outer wall. The ends of the positioning bent rods (61) are connected to the mounting shafts that are rotatably engaged with the pull rods (64).

5. The sintering kiln structure according to claim 4, characterized in that: The top side of the end of the positioning bent rod (61) located at the top is provided with a through hole (66), and a limiting pin (65) is inserted into the through hole (66). The outer wall of the inner liner body (41) is provided with a limiting hole (44) that is engaged with the limiting pin (65).

6. The sintering kiln structure according to claim 1, characterized in that: The positioning block (72) is set on the top side of the end of the horizontal bar of the frame (71), and the bottom end of the vertical bar of the frame (71) is connected to the inner wall of the sintering kiln body (1).

7. The sintering kiln structure according to claim 1, characterized in that: The furnace cover (2) is hinged to one side of the sintering kiln body (1).

Images