Saggar press molding apparatus, saggar molding method, and saggar

Abstract

This invention discloses a sagger pressing and forming device, comprising a mold frame, an upper mold core, a lower mold core, and a side lower mold. All of these components are capable of vertical movement. The upper mold core is positioned above the lower mold core and the side lower mold. The side lower mold is located outside the lower mold core, and the mold frame is located outside the side lower mold. The mold frame, lower mold core, and side lower mold form a mold cavity for accommodating the sagger powder to be formed. Correspondingly, this invention also provides a forming method based on the above-described device. This invention enables reverse fabric feeding and forward pressing in sagger pressing. In both the pressing and unloading states, the sagger maintains an upward-facing opening, allowing for flat unloading and facilitating automated production.

Description

Technical Field

[0001] This invention relates to the field of sagger pressing and forming equipment, and more particularly to a sagger pressing and forming equipment, a sagger forming method, and a sagger. Background Technology

[0002] Current saggers typically consist of a bottom and four sides. In use, saggers require refractory materials, high-temperature structural strength, and thermal stability. Therefore, during pressing, saggers need to be pressed evenly, with consistent density, and free of cracks. Currently, most sagger pressing methods employ reverse feeding and pressing, where the opening of the filler cavity faces downwards during the feeding phase, meeting the requirements for feeding and facilitating the leveling of the powder. However, in both the pressing and unloading phases, the opening of the sagger blank remains downwards. Saggers with downward-facing openings are difficult to push out horizontally, and are highly susceptible to breakage and collapse during the pushing process. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a sagger pressing and forming device that can realize reverse fabric pressing, and the final sagger blank is in the state of opening facing upward.

[0004] The technical problem to be solved by the present invention is to provide a crucible forming method that can form by reverse fabric pressing.

[0005] The technical problem to be solved by the present invention is to provide a sagger, wherein the sagger blank obtained after pressing is in an upward opening state, which can realize the flat ejection of the blank and can be automated for production.

[0006] To address the aforementioned problems, the present invention provides a sagger pressing and molding device, comprising a mold frame, an upper mold core, a lower mold core, and a side lower mold, wherein the mold frame, upper mold core, lower mold core, and side lower mold are all capable of vertical movement. The upper mold core is disposed above the lower mold core and the side lower mold, the side lower mold is disposed outside the lower mold core, and the mold frame is disposed outside the side lower mold. The mold frame, lower mold core, and side lower mold form a mold cavity for accommodating the sagger powder to be molded.

[0007] In one embodiment, the lower mold core and the side lower mold divide the sagger powder located above them into a bottom powder assembly and a side powder assembly respectively. The bottom powder assembly is pressed and formed to obtain the bottom, and the side powder assembly is pressed and formed to obtain the side. The bottom and the side are combined to form a sagger.

[0008] In one embodiment, the upper mold core and the lower mold core can move up and down simultaneously to achieve the up and down movement of the bottom powder assembly.

[0009] In one embodiment, the lower side mold is capable of moving up and down to press the side powder assembly into the side portion;

[0010] The upper and lower mold cores can move towards each other to press the bottom powder assembly into the bottom.

[0011] In one embodiment, the upper mold core includes a first mold core and a second mold core connected together, the first mold core being disposed above the second mold core, and the length of the first mold core being greater than the length of the second mold core.

[0012] In one embodiment, the area of ​​the first mold core is equal to the area of ​​the bottom powder assembly plus the area of ​​the side powder assembly, so that the first mold core can simultaneously press the bottom powder assembly and the side powder assembly.

[0013] In one embodiment, the area of ​​the second mold core is the same as the area of ​​the bottom powder assembly, so that the first mold core can completely press the bottom powder assembly to obtain the bottom.

[0014] In one embodiment, the side lower mold is disposed close to the outer side of the lower mold core to achieve a gapless connection between the side lower mold and the lower mold core.

[0015] To address the above problems, the present invention also provides a sagger forming method, which is based on the above-mentioned sagger pressing and forming equipment, comprising:

[0016] S1. Set the initial positions of the mold frame, lower mold core, and side lower mold, so that the mold frame, lower mold core, and side lower mold form a mold cavity for accommodating the sagger powder to be formed;

[0017] S2. The sagger powder is distributed in the mold cavity according to a preset height. The lower mold core and the side lower mold divide the sagger powder located above them into a bottom powder assembly and a side powder assembly respectively.

[0018] S3. Press the upper mold core into the mold cavity. After the upper mold core contacts the bottom powder assembly, the upper mold core and the lower mold core move downward at the same time. The mold frame and the side lower mold remain stationary, so that the bottom powder assembly moves to the preset position.

[0019] S4. The upper mold core continues to move downward, the lower mold core and the side lower mold move upward, and the mold frame remains stationary. The relative movement of the upper mold core, the lower mold core and the side lower mold presses and forms a sagger.

[0020] In one embodiment, after the sagger is formed, the upper mold core moves upward, the lower mold core and the side lower mold remain stationary, and the mold frame moves downward to remove the sagger.

[0021] In one embodiment, in step S3, the upper mold core and the lower mold core move downward at the same speed.

[0022] In one embodiment, in step S3, the upper mold core includes a first mold core and a second mold core connected together, the first mold core is disposed above the second mold core, and the length of the first mold core is greater than the length of the second mold core;

[0023] After the second mold core contacts the bottom powder assembly, the upper mold core and the lower mold core move downwards simultaneously, while the mold frame and the side lower mold remain stationary.

[0024] When the first mold core contacts the side powder assembly, the upper mold core stops moving downward, that is, the bottom powder assembly reaches the preset position.

[0025] In one embodiment, in step S4, the lower mold core and the side lower mold move upward, and the final stopping positions of the lower mold core and the side lower mold are on the same horizontal plane, so that the resulting sagger has a horizontal bottom surface.

[0026] In one embodiment, in step S4, the upper mold core moves downward at a first speed V1, and the lower mold core moves upward at a second speed V2, so that the compression ratio of the bottom powder aggregate and the side powder aggregate remains the same during and after the pressing process.

[0027] In one implementation, it includes:

[0028] S1. Set the relative positions of the mold frame, lower mold core and side lower mold, so that the mold frame, lower mold core and side lower mold form a mold cavity for accommodating the sagger powder to be formed;

[0029] S2. The sagger powder is placed in the mold cavity. The lower mold core and the side lower mold divide the sagger powder above them into a bottom powder assembly and a side powder assembly. The height of the bottom powder assembly is h1, and the height of the side powder assembly is H1.

[0030] S3. Press the upper mold core into the mold cavity. After the upper mold core contacts the bottom powder assembly, the upper mold core and the lower mold core move downward at the same speed. The mold frame and the side lower mold remain stationary, so that the bottom powder assembly moves to the preset position.

[0031] S4. The upper mold core moves downward at a first speed V1, the lower mold core moves upward at a second speed V2, the side lower mold moves upward and eventually becomes flush with the lower mold core, the mold frame remains stationary, and a sagger is formed by the relative movement of the upper mold core, the lower mold core and the side lower mold. The bottom thickness of the sagger is h2 and the side height is H2.

[0032] In one embodiment, the ratio of the second speed V2 to the first speed V1 is: V2 / V1 = 1 - (h1 - h2) / (H1 - H2).

[0033] Accordingly, the present invention also provides a sagger, which is obtained by pressing and forming using the sagger pressing and forming equipment described above or by manufacturing using the sagger forming method described above.

[0034] The present invention has the following beneficial effects:

[0035] In the sagger pressing and molding equipment provided by this invention, the mold frame, upper mold core, lower mold core, and side lower mold can all move up and down. The mold frame, lower mold core, and side lower mold form a mold cavity for accommodating the sagger powder to be molded. The lower mold core can move up and down to realize the up and down movement of the bottom powder assembly. Ultimately, in the feeding state, the opening direction of the sagger to be molded is downward, and in the pressing state and the blanking state, the opening direction of the sagger to be molded is upward, thereby enabling the blank to be ejected horizontally, which is beneficial for automated production.

[0036] In the sagger forming method provided by this invention, by controlling the relative positions of the mold frame, upper mold core, lower mold core, and side lower mold, the opening direction of the sagger to be formed is downward during the material feeding state, which is beneficial for leveling the powder and uniformly distributing the material. During the pressing and unloading states, the opening direction of the sagger to be formed is upward, thereby enabling the unloading of the blank horizontally and automating production. Furthermore, by controlling the movement speed of the upper and lower mold cores, not only is the opening direction of the sagger changed, but the compression ratio of the bottom and sides of the sagger is also ensured to be the same, thereby improving the overall uniformity of the sagger and avoiding local strength defects. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the working state of the sagger pressing and forming equipment of the present invention during the feeding process;

[0038] Figure 2 This is a schematic diagram of the working state of a sagger pressing and forming device of the present invention when changing the opening orientation;

[0039] Figure 3 This is a schematic diagram of the working state of the sagger pressing and forming equipment of the present invention during pressing;

[0040] Figure 4 This is a schematic diagram of the working state of a sagger pressing and forming equipment of the present invention during blank discharge. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] To solve the above technical problems, a sagger pressing and forming device is provided, such as... Figure 1-4 As shown, the mold includes a mold frame 4, an upper mold core 1, a lower mold core 2, and a side lower mold 3. The mold frame 4, the upper mold core 1, the lower mold core 2, and the side lower mold 3 can all move up and down. The upper mold core 1 is located above the lower mold core 2 and the side lower mold 3. The side lower mold 3 is located outside the lower mold core 2. The mold frame 4 is located outside the side lower mold 3. The mold frame 4, the lower mold core 2, and the side lower mold 3 form a mold cavity for accommodating the sagger powder to be molded.

[0043] In the sagger pressing and molding equipment provided by this invention, the mold frame, upper mold core, lower mold core, and side lower mold can all move up and down. The mold frame, lower mold core, and side lower mold form a mold cavity for accommodating the sagger powder to be molded. The lower mold core can move up and down to realize the up and down movement of the bottom powder assembly. Ultimately, in the feeding state, the opening direction of the sagger to be molded is downward, and in the pressing state and the blanking state, the opening direction of the sagger to be molded is upward, thereby enabling the blank to be ejected horizontally, which is beneficial for automated production.

[0044] Specifically, the lower mold core 2 and the side lower mold 3 divide the sagger powder above them into a bottom powder assembly 51 and a side powder assembly 52. ​​The bottom powder assembly 51 is pressed to form a bottom 61, and the side powder assembly 52 is pressed to form a side 62. The bottom 61 and the side 62 are combined to form a sagger 6. In one embodiment, the upper mold core 1 and the lower mold core 2 can move up and down simultaneously to allow the bottom powder assembly 51 to move up and down. The bottom powder assembly 51 moves downward, thus changing the sagger to be formed from an opening-down state to an opening-up state. Preferably, the side lower mold 3 can move up and down to press the side powder assembly 52 into the side 62; the upper mold core 1 and the lower mold core 2 can move towards each other to press the bottom powder assembly 51 into the bottom 61.

[0045] Furthermore, to uniformly press the bottom powder assembly 51 and the side powder assembly 52, in one embodiment, the upper mold core 1 includes a first mold core 11 and a second mold core 12 connected together. The first mold core 11 is disposed above the second mold core 12, and the length of the first mold core 11 is greater than the length of the second mold core 12. Preferably, the area of ​​the first mold core 11 is equal to the area of ​​the bottom powder assembly 51 plus the area of ​​the side powder assembly 52, so that the first mold core 11 can simultaneously press the bottom powder assembly 51 and the side powder assembly 52. ​​The area of ​​the second mold core 12 is the same as the area of ​​the bottom powder assembly 51, so that the first mold core 11 can completely press the bottom powder assembly 51 to obtain the bottom 61. Furthermore, the lower side mold 3 is disposed close to the outer side of the lower mold core 2 to achieve no gap between the lower side mold 3 and the lower mold core 2.

[0046] Accordingly, the present invention also provides a sagger forming method, which is based on the above-mentioned sagger pressing forming equipment, comprising:

[0047] S1. Set the initial positions of the mold frame 4, the lower mold core 2, and the side lower mold 3 so that the mold frame 4, the lower mold core 2, and the side lower mold 3 form a mold cavity for accommodating the sagger powder to be formed.

[0048] S2. The sagger powder is distributed in the mold cavity according to a preset height. The lower mold core 2 and the side lower mold 3 divide the sagger powder located above them into a bottom powder collection 51 and a side powder collection 52 respectively.

[0049] S3. Press the upper mold core 1 into the mold cavity. After the upper mold core 1 contacts the bottom powder assembly 51, the upper mold core 1 and the lower mold core 2 move downward at the same time. The mold frame 4 and the side lower mold 3 remain stationary, so that the bottom powder assembly 51 moves to the preset position.

[0050] S4. The upper mold core 1 continues to move downward, the lower mold core 2 and the side lower mold 3 move upward, and the mold frame 4 remains stationary. The relative movement of the upper mold core 1, the lower mold core 2 and the side lower mold 3 presses and forms the sagger 6.

[0051] In one embodiment, after the sagger is formed, the upper mold core 1 moves upward, the lower mold core 2 and the side lower mold 3 remain stationary, and the mold frame 4 moves downward to remove the sagger. In another embodiment, after the sagger is formed, the upper mold core 1 moves upward, the mold frame 4 and the side lower mold 3 remain stationary, and the lower mold core 2 moves upward to remove the sagger. It should be noted that the method of removing the sagger after forming is not limited to the above examples.

[0052] This invention achieves the following: in the feeding state, the opening of the sagger to be formed faces downward, which is conducive to scraping the powder and spreading the material evenly; in the pressing state and the blanking state, the opening of the sagger to be formed faces upward, so that the blank can be pushed out flat, thus enabling automated production.

[0053] Specifically, such as Figure 1 As shown, in step S2, when the material is being spread, the opening of the sagger to be formed faces downwards, which helps to smooth the powder and spread the material evenly.

[0054] like Figure 2 As shown, the opening direction conversion is completed in step S3. Preferably, the upper mold core 1 includes a first mold core 11 and a second mold core 12 connected together. The first mold core 11 is located above the second mold core 12, and the length of the first mold core 11 is greater than the length of the second mold core 12. Preferably, the area of ​​the first mold core 11 is equal to the area of ​​the bottom powder assembly 51 plus the area of ​​the side powder assembly 52, so that the first mold core 11 can simultaneously press the bottom powder assembly 51 and the side powder assembly 52. ​​The area of ​​the second mold core 12 is the same as the area of ​​the bottom powder assembly 51, so that the first mold core 11 can completely press the bottom powder assembly 51 to obtain the bottom 61. Based on the structure of the upper mold core 1 described above, in one embodiment, the upper mold core 1 is pressed down into the mold cavity. After the second mold core 12 of the upper mold core 1 contacts the bottom powder assembly 51, the upper mold core 1 and the lower mold core 2 move downwards simultaneously, while the mold frame 4 and the side lower mold 3 remain stationary, allowing the bottom powder assembly 51 to move to a preset position. Preferably, when the first mold core 11 contacts the side powder assembly 52, the upper mold core 1 stops moving downwards, meaning the bottom powder assembly 51 reaches the preset position. During this process, to ensure that the initial feeding height of the bottom powder assembly 51 remains unchanged, thereby facilitating control of the subsequent pressing and molding process, preferably, the upper mold core and the lower mold core move downwards at the same speed.

[0055] like Figure 3 As shown, the pressing and forming of the sagger is completed in step S4. In one embodiment, the lower mold core 2 and the side lower mold 3 move upward, and the final stopping positions of the lower mold core 2 and the side lower mold 3 are on the same horizontal plane, so that the resulting sagger has a horizontal bottom surface.

[0056] More importantly, and this is also the difficulty in the pressing process, is how to ensure that the bottom 61 and the side 62 of the sagger 6 maintain pressing synchronization during the molding process. To solve the above difficulty, in one embodiment, in step S4, the upper mold core 1 moves downward at a first speed V1, and the lower mold core 2 moves upward at a second speed V2, so that the compression ratio of the bottom powder aggregate 51 and the side powder aggregate 52 remains the same during and after pressing.

[0057] Preferably, the sagger forming method includes the following steps:

[0058] S1. Set the relative positions of the mold frame 4, the lower mold core 2, and the side lower mold 3 so that the mold frame 4, the lower mold core 2, and the side lower mold 3 form a mold cavity for accommodating the sagger powder to be formed.

[0059] S2. The sagger powder is placed in the mold cavity. The lower mold core 2 and the side lower mold 3 divide the sagger powder above them into a bottom powder assembly 51 and a side powder assembly 52 respectively. The height of the bottom powder assembly 51 is h1 and the height of the side powder assembly 52 is H1.

[0060] S3. Press the upper mold core 1 into the mold cavity. After the upper mold core 1 contacts the bottom powder assembly 51, the upper mold core 1 and the lower mold core 2 move downward at the same speed. The mold frame 4 and the side lower mold 3 remain stationary, so that the bottom powder assembly 51 moves to the preset position.

[0061] S4. The upper mold core 1 moves downward at a first speed V1, the lower mold core 2 moves upward at a second speed V2, and the side lower mold 3 moves upward and eventually aligns with the lower mold core 2. The mold frame 4 remains stationary. The relative movement of the upper mold core 1, the lower mold core 2, and the side lower mold 3 forms a sagger. Figure 4 As shown, the bottom 61 of the sagger 6 has a thickness of h2, and the side 62 has a height of H2.

[0062] In one embodiment, the ratio of the second speed V2 to the first speed V1 is: V2 / V1 = 1 - (h1 - h2) / (H1 - H2). The inventors found that under this speed condition, the upper mold core 1 and the lower mold core 2 can ensure that the compression ratio of the bottom powder aggregate 51 to the bottom 61 is the same as the compression ratio of the side powder aggregate 52 to the side 62, thereby improving the overall uniformity of the sagger and avoiding local strength defects.

[0063] Accordingly, the present invention also provides a sagger, which is obtained by pressing and forming using the sagger pressing and forming equipment described above or by manufacturing using the sagger forming method described above.

[0064] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method of forming a sagger, characterized by, The forming method of the sagger comprises the following steps: S1, setting the relative positions of the mold frame, the lower mold core and the side lower mold, so that the mold frame, the lower mold core and the side lower mold form a mold cavity for accommodating the sagger powder to be formed; S2, distributing the sagger powder in the mold cavity, the lower mold core and the side lower mold correspondingly divide the sagger powder above them into a bottom powder assembly and a side powder assembly, the height of the bottom powder assembly is h1, and the height of the side powder assembly is H1; S3, pressing the upper mold core downward to the mold cavity, after the upper mold core contacts the bottom powder assembly, the upper mold core and the lower mold core simultaneously move downward at the same speed, and the mold frame and the side lower mold remain stationary, so that the bottom powder assembly moves to a preset position; S4, the upper mold core moves downward at a first speed V1, the lower mold core moves upward at a second speed V2, the side lower mold moves upward and finally is flush with the lower mold core, and the mold frame remains stationary, and a sagger is formed by the relative movement of the upper mold core, the lower mold core and the side lower mold, the bottom thickness of the sagger is h2, and the side height is H2; The ratio of the second speed V2 to the first speed V1 is: V2 / V1=1-(h1-h2) / (H1-H2). The lower mold core and the side lower mold correspondingly divide the sagger powder above them into a bottom powder assembly and a side powder assembly, the bottom powder assembly is formed into a bottom after being pressed, the side powder assembly is formed into a side after being pressed, and the bottom and the side combine to form a sagger.

2. The method of forming a sagger according to claim 1, wherein The upper mold core and the lower mold core can simultaneously move upward and downward to realize the upward and downward movement of the bottom powder assembly.

3. The method of forming a sagger according to claim 2, wherein, The side lower mold can move upward and downward to realize the pressing of the side powder assembly into the side; 4. The method of forming a sagger of claim 2 wherein, The upper mold core and the lower mold core can move towards each other to realize the pressing of the bottom powder assembly into the bottom. The upper mold core comprises a first mold core and a second mold core connected in series, the first mold core is arranged above the second mold core, and the length of the first mold core is greater than the length of the second mold core.

5. The method of forming a sagger of claim 2 wherein, The area of the first mold core is equal to the area of the bottom powder assembly plus the area of the side powder assembly, so that the first mold core can simultaneously press the bottom powder assembly and the side powder assembly.

6. The method of forming a sagger of claim 5 wherein, The area of the second mold core is the same as the area of the bottom powder assembly, so that the first mold core can completely press the bottom powder assembly and obtain the bottom.

7. The method of forming a sagger of claim 5 wherein, The side lower mold is arranged tightly against the outer side of the lower mold core, so that there is no gap between the side lower mold and the lower mold core.

8. The method of forming a sagger of claim 1 wherein, ​ 9. A sagger, characterized by, which is produced using the saggar forming method according to any one of claims 1 to 8.

Images