Zirconium disc sintering furnace

Abstract

The utility model provides a kind of zirconium disc sintering furnace, including sintering furnace, moving mechanism, tray loading mechanism and heating assembly, sintering furnace is set up, and sintering furnace inside has the heating chamber of bottom opening setting, moving mechanism is closed and is set in the bottom of heating chamber, and moving mechanism is movably set along transverse direction, tray loading mechanism is connected on moving mechanism, and tray loading mechanism has multiple tray loading spaces of vertical interval arrangement, heating assembly includes multiple heating unit groups built-in in heating chamber, each side wall of heating chamber is all installed and is connected with heating unit group, each heating unit group includes multiple heating units. Such as using the multiple tray loading spaces of tray loading mechanism can simultaneously load more quantity of zirconia disc, greatly improve sintering efficiency, under the action of moving mechanism, convenient transportation, so that zirconia disc is after being transported to heating chamber by each side wall heating unit group around heating, evenly sinter, guarantee better sintering effect.

Description

Technical Field

[0001] This utility model relates to the field of zirconium disc sintering technology, and in particular to a zirconium disc sintering furnace. Background Technology

[0002] In the fields of medical restoration and cosmetic dentistry, porcelain crowns are widely used due to their excellent biocompatibility and aesthetics. The quality of the preparation of the core raw material, zirconia disc, directly determines the performance of the porcelain crown. The sintering process in the processing of zirconia disc is an indispensable step to ensure that the density and hardness of the zirconia disc meet the standards. However, current equipment used for zirconia disc sintering has significant technical defects, making it difficult to meet the needs of large-scale production: First, existing sintering furnaces mostly adopt fixed load-bearing structures, lacking convenient carrier loading and unloading mechanisms. Operators must manually transport carriers containing zirconia discs into and out of the furnace, which is not only labor-intensive but also prone to causing damage to semi-finished products during handling. Manual operation in alternating hot and cold environments also poses safety hazards. Second, the layout of heating components inside the furnace is unreasonable, mostly featuring single-sided or localized heating designs, resulting in uneven temperature distribution within the furnace. The heating differences around the zirconia discs are significant, and some areas suffer from insufficient heating, leading to insufficient density and substandard hardness, affecting product qualification rates. Third, existing carriers are mostly single-layer or a few multi-layer designs, with low utilization of stacking gaps. The number of zirconia discs that can be accommodated in a single sintering cycle is limited. Coupled with the time-consuming loading and unloading operations, the overall sintering efficiency is low, making it difficult to meet the needs of mass production of zirconia discs.

[0003] Therefore, it is necessary to propose a zircon disc sintering furnace to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0004] The main objective of this invention is to provide a zirconium disc sintering furnace to solve the problems of uneven heating effect and small number of sinters in a single sintering operation in the prior art.

[0005] To achieve the above objectives, this utility model provides a zirconium disc sintering furnace, including a sintering furnace, a moving mechanism, a disc loading mechanism, and a heating assembly; wherein, The sintering furnace is closable and has a heating chamber with an opening at the bottom. The moving mechanism is enclosed at the bottom of the heating chamber and is movably arranged laterally to enter and exit the heating chamber. The tray loading mechanism is connected to the top of the moving mechanism and has multiple layers of tray loading spaces arranged vertically at intervals. The tray loading spaces are used for placing zirconia trays. The heating assembly includes multiple heating unit groups built into the heating chamber. Each side wall of the heating chamber is equipped with a heating unit group, and each heating unit group includes multiple heating units arranged at vertical intervals.

[0006] Preferably, each heating unit includes a mounting rod and a heating wire. The mounting rod is placed horizontally, and the mounting rod is connected to each side wall of the heating chamber. The heating wire is wound around the mounting rod.

[0007] Preferably, each heating unit further includes two placement blocks spaced apart along the extension direction of the mounting rod; wherein the placement blocks are bent, the placement blocks are fixed to the respective side walls of the heating chamber and are correspondingly positioned below the mounting rod, and the mounting rod is placed on the corresponding two placement blocks.

[0008] Preferably, the moving mechanism includes a support component, a moving platform, and two tracks spaced apart along the longitudinal direction. The tracks extend laterally. A pulley is fixedly connected to the bottom of the moving platform and is movably connected to the track. The support component is fixed to the top of the moving platform.

[0009] Preferably, the tray-loading mechanism includes four tray-loading units arranged in a matrix, each tray-loading unit including multiple vertically spaced partitions and a column group, each column group including four columns arranged in a matrix; wherein, The bottom partition is laid on top of the support assembly, and a set of columns is fixed between each pair of adjacent partitions so that the tray-loading space is formed between each pair of adjacent partitions.

[0010] Preferably, the support assembly includes three support units arranged longitudinally at intervals, each support unit including a support block and three pads arranged laterally at intervals; wherein, The support block is fixed to the top of the mobile platform, the pad is fixed to the support block, and the four corners of the bottom partition are respectively laid on the four pads.

[0011] Preferably, the sintering furnace includes a furnace body and a furnace door. The furnace door is closably connected to one side of the furnace body along the transverse direction. The furnace body has the heating chamber, and the inner side of the furnace door is recessed to form a groove corresponding to the heating chamber. The heating unit group is installed and connected to the inner wall of the heating chamber in the furnace body and the groove of the furnace door.

[0012] Preferably, the furnace body has a recessed guide groove at the bottom near the heating chamber, and the moving platform has guide protrusions at both ends along the longitudinal direction, which are movably embedded in the guide groove along the transverse direction.

[0013] Preferably, a heating unit is installed and connected to the inner side of the support blocks at both ends and on both sides of the support block in the middle.

[0014] Preferably, each heating unit group contains eight heating units, which are arranged at vertical intervals.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a zirconium disc sintering furnace, including a sintering furnace, a moving mechanism, a disc loading mechanism, and a heating assembly. The sintering furnace is openable and closable, and has a heating chamber with an opening at the bottom. The moving mechanism is enclosed at the bottom of the heating chamber and is laterally movable for entering and exiting the heating chamber. The disc loading mechanism is connected to the top of the moving mechanism and has multiple layers of vertically spaced disc loading spaces for placing zirconium discs. The heating assembly includes multiple heating unit groups built into the heating chamber. Each side wall of the heating chamber is equipped with heating unit groups, and each heating unit group includes multiple vertically spaced heating units. This multi-layered disc loading space of the disc loading mechanism allows for the simultaneous loading of a large number of zirconium discs, significantly improving sintering efficiency. The moving mechanism facilitates transportation, allowing the zirconium discs to be uniformly sintered by the surrounding heating unit groups on each side wall after being transported to the heating chamber, ensuring a good sintering effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the overall structure of this utility model after removing the tray loading mechanism; Figure 3 This is a side view of the overall structure in one embodiment of the present utility model; Figure 4 This is a frontal view of the overall structure in one embodiment of the present invention.

[0018] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0019] Explanation of icon numbers: 10. Sintering furnace; 110. Furnace body; 111. Heating chamber; 112. Guide groove; 120. Furnace door; 121. Groove; 20. Moving mechanism; 210. Support unit; 211. Support block; 212. Pad block; 213. Sponge pad; 220. Moving platform; 221. Pulley; 222. Guide protrusion; 230. Track; 30. Plate loading mechanism; 310. Plate loading unit; 311. Partition plate; 312. Column; 40. Heating assembly; 410. Heating unit; 411. Mounting rod; 412. Heating wire; 413. Placement block; 50. Zirconia plate. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] 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.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0024] Please see the appendix Figure 1-4 This utility model provides an embodiment of a zirconium disc sintering furnace 10, including a sintering furnace 10, a moving mechanism 20, a disc loading mechanism 30, and a heating assembly 40. First, it should be noted that in this application, "longitudinal" refers to the length direction of the furnace body 110, and "transverse" refers to the width direction of the furnace body 110. Please refer to the accompanying drawings for details; the specific design is as follows: The sintering furnace 10 is closable and has a heating chamber 111 with a bottom opening inside. The moving mechanism 20 is enclosed at the bottom of the heating chamber 111 and is movably arranged laterally to enter and exit the heating chamber 111. The tray loading mechanism 30 is connected to the top of the moving mechanism 20 and has multiple tray loading spaces arranged vertically at intervals. The tray loading spaces are used to place zirconia trays 50. The heating assembly 40 includes multiple heating unit groups built into the heating chamber 111. Each side wall of the heating chamber 111 is equipped with a heating unit group, and each heating unit group includes multiple heating units 410 arranged vertically at intervals.

[0025] Specifically, the zirconium disc sintering furnace 10 in this application includes a sintering furnace 10, a moving mechanism 20, a disc loading mechanism 30, and a heating assembly 40. The sintering furnace 10 is the entire device body, which can be configured as a combination of a furnace body 110 and a furnace door 120 to achieve the purpose of opening and closing. A heating chamber 111 is provided inside the furnace body 110 for sintering. The inner side of the furnace door 120 is recessed to form a groove 121 corresponding to the heating chamber 111. The groove 121 is used for the installation of the heating unit assembly. Thus, when the furnace door 120 is closed, the groove 121 closes to the heating chamber 111, forming a structure that surrounds the heating and sintering. It is worth mentioning that the bottom of the heating chamber 111 needs to be open to allow the moving mechanism 20 to enter and exit. When the moving mechanism 20 is fully inside the heating chamber 111, it will close the bottom opening of the heating chamber 111 to ensure the formation of a sealed chamber and maintain the temperature. When loading / unloading trays, the furnace door 120 can be opened and the trays can be moved and transported by the moving mechanism 20. When sintering, the furnace door 120 is closed to ensure the sealing of the heating chamber 111 and maintain the high temperature inside. The tray loading mechanism 30 is used to load the zirconia trays 50 and then sinter them by continuous heating from the heating assembly 40.

[0026] The tray loading mechanism 30 is fixed to the moving mechanism 20 to follow the moving mechanism 20 and thus realize the loading and unloading of the zirconia trays 50. The tray loading mechanism 30 adopts a multi-layer tray loading space structure, which can load multiple zirconia trays 50 at the same time, so that multiple zirconia trays 50 can be sintered at the same time, thereby greatly increasing the number of sinterings in a single batch and improving sintering efficiency. The heating component 40 adopts the form of multiple heating unit groups, so that the four walls of the heating chamber 111 are all provided with the heating unit groups, thereby forming a circumferential heating effect to ensure sintering uniformity and guarantee sintering effect. Each heating unit group contains eight heating units, which are arranged vertically at intervals. The specific number can be set by those skilled in the art according to actual needs.

[0027] In a preferred embodiment of the present invention, each heating unit 410 includes a mounting rod 411 and a heating wire 412. The mounting rod 411 is placed horizontally, and the mounting rod 411 is connected to each side wall of the heating chamber 111. The heating wire 412 is wound around the mounting rod 411.

[0028] It should be noted that the mounting rod 411 is used for mounting the heating wire 412, which serves as a heat source and dissipates heat through heating to perform sintering. It uses electric heating, which is a relatively mature technology, so it will not be described in detail here.

[0029] In a preferred embodiment of the present invention, each heating unit 410 further includes two placement blocks 413 spaced apart along the extension direction of the mounting rod 411; wherein, the placement blocks 413 are bent, and the placement blocks 413 are fixed to each side wall of the heating chamber 111 to be correspondingly disposed below the mounting rod 411, and the mounting rod 411 is placed on the corresponding two placement blocks 413.

[0030] It should be noted that the placement block 413 is used to facilitate the placement of the mounting rod 411 so that the mounting rod 411 can be fixed to the inner wall of the heating chamber 111. The two placement blocks 413 are arranged at intervals along the extension direction of the mounting rod 411, so as to be respectively arranged at both ends of the mounting rod 411 to keep the mounting rod 411 horizontally and stably. In order to prevent the mounting rod 411 from slipping, the placement block 413 can be set in a bent form to facilitate the installation of the mounting rod 411.

[0031] In a preferred embodiment of the present invention, the moving mechanism 20 includes a support component, a moving platform 220, and two longitudinally spaced tracks 230. The tracks 230 extend laterally. A pulley 221 is fixedly connected to the bottom of the moving platform 220 and is movably connected to the track 230. The support component is fixed to the top of the moving platform 220.

[0032] It is worth noting that the mobile platform 220, as the main support, is equipped with pulleys 221 at its bottom to slide in conjunction with the track 230. The track 230 extends laterally from the inside of the furnace body 110 to the outside of the furnace body 110, thus ensuring that the movement path is along the inside and outside of the furnace body 110. The support component is used to support the tray loading mechanism 30 above, so that the tray loading mechanism 30 can be placed stably.

[0033] In a preferred embodiment of the present invention, the tray loading mechanism 30 includes four tray loading units 310 arranged in a matrix. Each tray loading unit 310 includes multiple partitions 311 arranged vertically at intervals and a set of columns. Each set of columns includes four columns 312 arranged in a matrix at intervals. The bottom partition 311 is laid on top of the support assembly. A set of columns is fixed between each pair of adjacent partitions 311, so that the tray loading space is formed between each pair of adjacent partitions 311.

[0034] It is worth noting that multiple tray-loading units 310 are used to form a multi-layered arrangement. Each tray-loading unit 310 includes multiple vertically spaced partitions 311 and a column group. The partitions 311 are used to place the zirconia trays 50, and the column group is used to support adjacent partitions 311 to form a tray-loading space. Thus, the zirconia trays 50 are placed between adjacent partitions 311. The column group consists of four columns 312 arranged in a matrix around the partitions 311, providing stable support. It is worth mentioning that the height of the columns 312 needs to be greater than the common thickness of the zirconia trays 50. This not only facilitates the placement of the zirconia trays 50 but also allows for reserved gaps to facilitate heat transmission and sintering. The columns 312 and the partitions 311 can be made of corundum mullite bricks, which have high fire resistance and high temperature resistance, as well as high strength, making them easy to support.

[0035] Furthermore, the support assembly includes three support units 210 arranged longitudinally at intervals, each support unit 210 including a support block 211 and three pads 212 arranged laterally at intervals; wherein, the support block 211 is fixed to the top of the mobile platform 220, the pads 212 are fixed to the support block 211, and the four corners of the bottom partition 311 are respectively laid on the four pads 212.

[0036] It should be noted that the support block 211 serves as a bottom support for the installation of the pad block 212. The pad block 212 can be raised to a certain height. Technicians can adjust the height of the pad block 212 as needed to adjust the bottom height of the entire tray loading mechanism 30. There are a total of three support units 210, and each support unit 210 has three pad blocks 212, thus forming a three-row, three-column distribution of pad blocks 212. When the bottom partition 311 is installed, the four corners are laid on the four pad blocks 212 respectively. The four pad blocks 212 are adjacent to each other to form a rectangle. It is worth mentioning that when the corners are laid on the middle pad block 212, usually only half of the area is laid to reserve the other half for the bottom partition 311 of the adjacent tray loading unit 310.

[0037] Furthermore, a guide groove 112 is recessed at the bottom of the furnace body 110 near the heating chamber 111, and guide protrusions 222 are respectively formed at both ends of the moving platform 220 along the longitudinal direction. The guide protrusions 222 are movably embedded in the guide groove 112 along the transverse direction.

[0038] It should be noted that the guide groove 112 is used to cooperate with the guide protrusion 222 of the moving platform 220 to achieve the guiding effect, prevent the moving mechanism 20 from deviating when moving, and better embed it in the heating chamber 111.

[0039] Furthermore, a heating unit 410 is installed and connected to the inner side of the support blocks 211 at both ends and on both sides of the support block 211 in the middle.

[0040] It should be noted that this allows the entire heating chamber 111 to be heated not only around the circumferential side walls but also at the bottom, thus improving sintering efficiency.

[0041] Furthermore, a sponge pad 213 can be placed between the pad 212 and the support block 211 to increase the friction between the pad 212 and the support block 211 and improve the installation stability. The sponge pad 213 can be made of high temperature resistant material to adapt to the high temperature environment of the sintering furnace.

[0042] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A zirconium disc sintering furnace, characterized in that, It includes a sintering furnace, a moving mechanism, a tray-loading mechanism, and heating components; among which, The sintering furnace is closable and has a heating chamber with an opening at the bottom. The moving mechanism is enclosed at the bottom of the heating chamber and is movably arranged laterally to enter and exit the heating chamber. The tray loading mechanism is connected to the top of the moving mechanism and has multiple layers of tray loading spaces arranged vertically at intervals. The tray loading spaces are used for placing zirconia trays. The heating assembly includes multiple heating unit groups built into the heating chamber. Each side wall of the heating chamber is equipped with a heating unit group, and each heating unit group includes multiple heating units arranged at vertical intervals.

2. The zirconium disc sintering furnace according to claim 1, characterized in that, Each heating unit includes a mounting rod and a heating wire. The mounting rod is placed horizontally, and the mounting rod is connected to each side wall of the heating chamber. The heating wire is wound around the mounting rod.

3. The zirconium disc sintering furnace according to claim 2, characterized in that, Each heating unit further includes two placement blocks spaced apart along the extension direction of the mounting rod; wherein the placement blocks are bent and fixed to the respective side walls of the heating chamber to be correspondingly positioned below the mounting rod, and the mounting rod is placed on the corresponding two placement blocks.

4. The zirconium disc sintering furnace according to claim 1, characterized in that, The moving mechanism includes a support component, a moving platform, and two longitudinally spaced tracks. The tracks extend laterally. A pulley is fixedly connected to the bottom of the moving platform and is movably connected to the track. The support component is fixed to the top of the moving platform.

5. The zirconium disc sintering furnace according to claim 4, characterized in that, The tray-loading mechanism includes four tray-loading units arranged in a matrix, each tray-loading unit including multiple vertically spaced partitions and a column group, each column group including four columns arranged in a matrix; wherein, The bottom partition is laid on top of the support assembly, and a set of columns is fixed between each pair of adjacent partitions so that the tray-loading space is formed between each pair of adjacent partitions.

6. The zirconium disc sintering furnace according to claim 5, characterized in that, The support assembly includes three support units spaced apart along the longitudinal direction, each support unit including a support block and three pads spaced apart along the transverse direction; wherein, The support block is fixed to the top of the mobile platform, the pad is fixed to the support block, and the four corners of the bottom partition are respectively laid on the four pads.

7. The zirconium disc sintering furnace according to claim 4, characterized in that, The sintering furnace includes a furnace body and a furnace door. The furnace door is closably connected to one side of the furnace body along the transverse direction. The furnace body has the heating chamber, and the inner side of the furnace door is recessed to form a groove corresponding to the heating chamber. The heating unit group is installed and connected to the inner wall of the heating chamber in the furnace body and the groove of the furnace door.

8. The zirconium disc sintering furnace according to claim 7, characterized in that, The furnace body has a recessed guide groove at the bottom near the heating chamber, and the moving platform has guide protrusions at both ends along the longitudinal direction. The guide protrusions are movably embedded in the guide groove along the transverse direction.

9. The zirconium disc sintering furnace according to claim 6, characterized in that, A heating unit is installed and connected to the inner side of the support blocks at both ends and on both sides of the support block in the middle.

10. The zirconium disc sintering furnace according to claim 1, characterized in that, Each heating unit group comprises eight heating units, which are arranged at vertical intervals.

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