Mold assembly

Abstract

The utility model relates to the technical field of photovoltaics and semiconductors, in particular to a mold assembly, and solves the problems that a mold is inconvenient to demold, high in operation intensity and poor in safety performance. The mold assembly comprises a mold body, a bearing cover and a bearing piece. The mold body comprises a top and a bottom which are oppositely arranged, and a side wall connecting the top and the bottom, and the top, the bottom and the side wall define a vacuum cavity. The side wall is provided with a plurality of adsorption holes communicating with the vacuum cavity and the outside, and under the condition that the vacuum cavity is vacuumized, the multiple adsorption holes adsorb raw materials of the furnace pipe to the outer side of the side wall, so that the annular furnace pipe is formed. The bearing cover is detachably connected with the bottom and used for bearing the furnace pipe raw materials adsorbed to the side wall. The bearing part is connected with the top and used for suspending the mold body and the bearing cover. The bearing piece of the mold assembly is arranged above the mold body, the bearing cover is arranged below the mold body, demolding can be achieved without overturning the mold assembly during demolding, operation is convenient, the operation intensity is low, and safety is high.

Description

Technical Field

[0001] The present application relates to the technical fields of photovoltaics and semiconductors, and particularly relates to a mold assembly. Background Art

[0002] Tube furnaces are widely applicable to industrial and mining enterprises, research institutions, university laboratories, etc., and can be used for chemical analysis, physical measurement, and heat treatment processes of metal parts and small mold steel parts. Tube furnaces are also very widely used in the fields of semiconductors and photovoltaics.

[0003] The furnace liner of a tube furnace is made by using a vacuum adsorption mold. The overall process is to immerse the forming surface of the mold in a forming pool, and adsorb the furnace liner raw materials in the forming pool onto the mold by evacuating the mold. After the thickness of the furnace liner raw materials adsorbed on the forming surface of the mold reaches the requirement, the mold and the formed furnace liner are taken out of the forming pool, and finally the formed furnace liner is separated from the mold.

[0004] However, in the related art, the mold needs to be turned over during demolding, resulting in inconvenient demolding, high operation intensity, and poor safety performance. Summary of the Utility Model

[0005] In view of this, an embodiment of the present application provides a mold assembly, which solves the problems of inconvenient demolding, high operation intensity, and poor safety performance of the mold.

[0006] In a first aspect, an embodiment of the present application provides a mold assembly configured to prepare an annular furnace liner. The mold assembly includes: a mold body including a top and a bottom disposed opposite to each other, and a side wall connecting the top and the bottom. The top, the bottom, and the side wall enclose a vacuum chamber, and the side wall is provided with a plurality of adsorption holes communicating the vacuum chamber with the outside. Wherein, when the vacuum chamber is evacuated, the plurality of adsorption holes adsorb the furnace liner raw materials outside the side wall to form the annular furnace liner; a supporting cover detachably connected to the bottom and configured to be able to support the furnace liner raw materials adsorbed on the side wall; a carrier connected to the top and configured to suspend the mold body and the supporting cover.

[0007] In some embodiments, the bottom is provided with a screw, the supporting cover is provided with a first through hole, and the mold assembly further includes: a first locking member provided with a first threaded portion. The screw passes through the first through hole and is screwed with the first threaded portion so that the first locking member abuts against a side of the supporting cover away from the mold body; or, the bottom is provided with a second threaded portion, the supporting cover is provided with a second through hole, and the mold assembly further includes: a second locking member provided with a threaded section, abutting against a side of the supporting cover away from the mold body. The threaded section passes through the second through hole and is screwed with the second threaded portion.

[0008] In some embodiments, when the mold assembly includes the first locking member, the first locking member includes: a wing nut.

[0009] In some embodiments, the annular furnace liner includes a heating element and the furnace liner raw material that wraps the heating element; wherein, the mold assembly further includes: at least one fixing rod, connected to the top and extending along the extending direction of the mold body, and the heating element can be sleeved on the fixing rod.

[0010] In some embodiments, the heating element includes a heating wire, and the heating wire is spirally wound around the fixing rod; wherein, the mold assembly further includes: a positioning member, detachably connected to the top and configured to fix the end of the heating wire.

[0011] In some embodiments, the positioning member is provided with at least one positioning groove, and the positioning groove is configured to fix the end of the heating wire; wherein, the positioning groove is provided with an upper limiting portion, a lower limiting portion and a side limiting portion connecting the upper limiting portion and the lower limiting portion to realize three-sided positioning of the end of the heating wire by using the upper limiting portion, the lower limiting portion and the side limiting portion.

[0012] In some embodiments, the top is provided with a flange, and the flange, the side wall of the mold body and the supporting cover enclose a forming space, and the forming space is configured to accommodate the annular furnace liner; wherein, the flange is provided with a plurality of through holes, and the number of the fixing rods is a plurality; wherein, the fixing rod includes: an abutting portion, abutting against the side of the flange away from the supporting cover; a fixing portion, connected to the abutting portion and passing through the through hole.

[0013] In some embodiments, one side of the supporting cover close to the mold body is provided with a plurality of limiting holes; wherein, a plurality of the fixing rods respectively pass through the plurality of through holes and are respectively inserted into the plurality of limiting holes.

[0014] In some embodiments, the top is provided with a flange, and the positioning member includes: a positioning portion, extending along the extending direction of the mold body and provided with the positioning groove; a first connecting portion, connected to the positioning portion, arranged on the side of the flange away from the supporting cover and detachably connected to the flange, wherein, the extending direction of the first connecting portion intersects with the extending direction of the positioning portion; a second connecting portion, connected to the positioning portion, arranged on the side of the supporting cover away from the mold body and detachably connected to the supporting cover, wherein, the extending direction of the second connecting portion intersects with the extending direction of the positioning portion.

[0015] In some embodiments, an air extraction port is provided at the bottom, and the air extraction port is configured to communicate an air extraction device with the vacuum chamber so that the air extraction device extracts the gas in the vacuum chamber; wherein, an avoidance port is provided on the support cover, and the avoidance port is configured to expose the air extraction port.

[0016] In the mold assembly provided by the embodiment of the present application, the bearing member is arranged above the mold body, and the support cover is arranged below the mold body. During demolding, demolding can be achieved without flipping the mold assembly, which is convenient to operate, has low operation intensity, and high safety. Description of the Drawings

[0017] By describing the embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0018] Figure 1 Shown is a schematic structural diagram of a mold assembly and a heating element provided by an embodiment of the present application.

[0019] Figure 2 Shown is a schematic cross-sectional view of a mold assembly, a ring furnace liner, and furnace liner raw materials provided by an embodiment of the present application.

[0020] Figure 3 Shown is a perspective view of a mold assembly and an air extraction device provided by an embodiment of the present application.

[0021] Figure 4 Shown as Figure 3 A partial enlarged view of the mold assembly shown in the A area.

[0022] Figure 5 Shown as Figure 3 A partial enlarged view of the mold assembly shown in the B area.

[0023] Figure 6 Shown is a schematic structural diagram of a mold assembly provided by an embodiment of the present application.

[0024] Figure 7 Shown as Figure 6 A partial enlarged view of the mold assembly shown in the C area.

[0025] Figure 8 Shown is a schematic structural diagram of a positioning member provided by an embodiment of the present application.

[0026] Figure 9 Shown as Figure 8 A partial enlarged view of the positioning member shown in the D area.

[0027] Figure 10 The side view of the positioning member provided by an embodiment of the present application is shown.

[0028] Reference numerals:

[0029] 10. Mold assembly; 100. Mold body; 110. Top; 1110. Flange; 1111. Through hole; 120. Bottom; 1201. Second threaded portion; 1210. Screw rod; 1202. Air extraction port; 130. Side wall; 1301. Adsorption hole; 101. Vacuum chamber; 102. Molding space; 200. Support cover; 201. First through hole; 202. Second through hole; 203. Limiting hole; 204. Avoidance port; 300. Carrier; 400. First locking member; 410. First threaded portion; 401. Wing nut; 500. Second locking member; 510. Threaded section; 600. Fixed rod; 610. Abutting portion; 620. Fixed portion; 700. Positioning member; 710. Positioning portion; 720. First connecting portion; 730. Second connecting portion; 701. Positioning groove; 7011. Upper limiting portion; 7012. Lower limiting portion; 7013. Side limiting portion; 12. Annular furnace liner; 1. Heating member; 1001. Heating wire; 2. Furnace liner raw material; 3. Air extraction equipment. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0031] Next, the specific structure of the mold assembly will be described in detail in conjunction with the accompanying drawings and specific embodiments.

[0032] Figure 1 The structural schematic diagram of the mold assembly and the heating member provided by an embodiment of the present application is shown. Figure 2 The structural schematic diagram of the cross-section of the mold assembly, the annular furnace liner and the furnace liner raw material provided by an embodiment of the present application is shown. Figure 3 The perspective view of the mold assembly and the air extraction equipment provided by an embodiment of the present application is shown. As Figures 1 to 3As shown, the mold assembly 10 is configured to prepare the annular furnace liner 12. The mold assembly includes a mold body 100, a supporting cover 200, and a carrier 300. The mold body 100 includes a top 110 and a bottom 120 that are oppositely arranged, and a side wall 130 connecting the top and the bottom. The top 110, the bottom 120, and the side wall 130 enclose a vacuum chamber 101. The side wall 130 is provided with a plurality of adsorption holes 1301 that communicate the vacuum chamber 101 with the outside. When the vacuum chamber 101 is evacuated, the plurality of adsorption holes 1301 adsorb the furnace liner raw material 2 outside the side wall 130 to form the annular furnace liner 12. The supporting cover 200 is detachably connected to the bottom 120 and is configured to support the furnace liner raw material 2 adsorbed on the side wall 130. The carrier 300 is connected to the top 110 and is configured to suspend the mold body 100 and the supporting cover 200.

[0033] In the related art, the carrier of the mold is a rectangular frame. The rectangular frame includes a top pillar and a bottom pillar that are oppositely arranged, and two side pillars connecting the top pillar and the bottom pillar. The mold body is arranged in the rectangular frame, and the bottom of the mold body is rotatably connected to the bottom pillar, so as to suspend the mold body by using the rectangular frame. The furnace liner is formed between the side surface of the mold body, the side pillars, the top pillar, and the bottom pillar. When the furnace liner needs to be demolded, if the mold body is not flipped, the furnace liner will be blocked by the bottom pillar and cannot be demolded downward. Therefore, when the furnace liner needs to be demolded, it is necessary to flip the mold body relative to the bottom pillar so that the top of the mold body faces downward, and the furnace liner is demolded downward from the top of the mold body, resulting in inconvenient demolding, high working intensity, and poor safety performance of the mold in the related art.

[0034] In the mold assembly 10 of the present application, the carrier 300 is arranged above the mold body 100, and the supporting cover 200 is arranged below the mold body 100. When demolding, it is not necessary to flip the mold assembly 10. Demolding can be achieved only by removing the supporting cover 200, which is convenient to operate, has low working intensity, and high safety.

[0035] In the process of flipping the mold in the related art, the furnace liner is easily deformed. In order to avoid the deformation of the furnace liner, it is necessary to increase the forming thickness of the furnace liner, resulting in a relatively large overall size of the furnace liner and a large amount of furnace liner raw material used, causing waste of resources.

[0036] The mold assembly 10 provided by the embodiment of the present application does not need to be flipped when demolding, which can avoid the deformation of the annular furnace liner 12 caused by flipping the mold assembly 10, and improve the yield of the annular furnace liner 12. The forming thickness of the annular furnace liner 12 can be relatively reduced, so that the forming size of the annular furnace liner 12 is reduced, and the amount of the furnace liner raw material 2 used is reduced, saving resources.

[0037] In addition, the carrier of the related technology is arranged below the mold, and the size of the carrier is limited by the forming size of the furnace liner. However, the carrier 300 of the mold assembly 10 provided in the embodiments of the present application is arranged above the mold body 100. When demolding, the supporting cover 200 is removed, and the annular furnace liner 12 is demolded downward. Therefore, the size of the carrier 300 is no longer limited by the forming size of the annular furnace liner 12.

[0038] Exemplarily, the shape of the cross-section of the annular furnace liner 12 can be a rectangular ring, a trapezoidal ring, a circular ring, other polygonal rings or an irregularly shaped ring. Exemplarily, the shape of the cross-section of the mold body 100 can be a rectangular ring, a trapezoidal ring, a circular ring, other polygonal rings or an irregularly shaped ring. In practical applications, the shape of the cross-section of the mold body 100 can be set according to the shape of the cross-section of the annular furnace liner 12. Exemplarily, Figure 1 It shows that the shape of the cross-section of the mold body 100 is a circular ring. Exemplarily, Figure 2 It shows that the shape of the cross-section of the mold body 100 is a rectangular ring.

[0039] Exemplarily, an air extraction port 1202 is provided on the mold body 100, and the air extraction port 1202 can be arranged at the top 110 or the bottom 120 of the mold body 100. Figure 3 It shows the case where the air extraction port 1202 is arranged at the bottom 120 of the mold body 100. The specific setting position of the air extraction hole 1202 can be set according to actual needs, and the present application does not make specific limitations. The air extraction port 1202 is configured to communicate the vacuum chamber 101 and the air extraction device 3.

[0040] Exemplarily, a plurality of adsorption holes 1301 can be arranged regularly or irregularly on the side wall 130. For example, a plurality of adsorption holes 1301 can be arranged in a matrix, in a circular arrangement, in a linear arrangement, etc. on the side wall 130 to improve the uniformity of adsorption of the plurality of adsorption holes 1301.

[0041] Exemplarily, Figure 3 The solid lines in represent the structures visible from the outside of the mold body 100 and the air extraction device 3, and the dashed lines represent the internal structure of the mold body 100.

[0042] In some embodiments, such as Figure 3 、 Figure 4 、 Figure 6 and Figure 7As shown, the bottom 120 is provided with a screw rod 1210, and the supporting cover 200 is provided with a first through hole 201. The mold assembly 10 further includes a first locking member 400. The first locking member 400 is provided with a first threaded portion 410. The screw rod 1210 passes through the first through hole 201 and is screwed with the first threaded portion 410, so that the first locking member 400 abuts against the side of the supporting cover 200 away from the mold body 100, thereby realizing the detachable connection between the supporting cover 200 and the bottom 120.

[0043] Exemplarily, the first locking member 400 can be a hexagonal nut, a knurled thumb nut, etc.

[0044] In some embodiments, when the mold assembly 10 includes the first locking member 400, the first locking member 400 includes a wing nut 401. The wing nut 401 is convenient for manual disassembly and does not require tools such as a screwdriver, further improving the convenience of installation.

[0045] Exemplarily, the mold assembly 10 includes two first locking members 400. The bottom 120 is provided with two screw rods 1210, and the supporting cover 200 is provided with two first through holes 201. One screw rod 1210 passes through one first through hole 201 and is screwed with the first threaded portion 410 of one first locking member 400.

[0046] In some embodiments, as Figure 3 and Figure 5 shown, the bottom 120 is provided with a second threaded portion 1201, the supporting cover 200 is provided with a second through hole 202, the mold assembly 10 further includes a second locking member 500. The second locking member 500 is provided with a threaded section 510. The second locking member 500 abuts against the side of the supporting cover 200 away from the mold body 100. The threaded section 510 passes through the second through hole 202 and is screwed with the second threaded portion 1201, thereby realizing the detachable connection between the supporting cover 200 and the bottom 120.

[0047] Exemplarily, the second locking member 500 can be a screw, a bolt or other structures with a threaded locking function.

[0048] The above detachable connection structure between the supporting cover 200 and the bottom 120 of the mold body 100 is simple in structure and convenient for installation.

[0049] Exemplarily, the supporting cover 200 and the bottom 120 can also be detachably connected by means of buckles, magnetic attraction, etc.

[0050] Exemplarily, the cross-sectional shape of the mold body 100 is an annular shape, and the shape of the supporting cover 200 is an annular shape.

[0051] In some embodiments, as Figure 1 and Figure 2As shown, the annular furnace liner 12 includes a heating element 1 and a furnace liner raw material 2 that wraps the heating element 1. The mold assembly 10 further includes at least one fixing rod 600. The fixing rod 600 is connected to the top 110 and extends along the extending direction of the mold body 100. The heating element 1 can be sleeved on the fixing rod 600. The heating element 1 is fixed by the fixing rod 600 to facilitate the preparation of the annular furnace liner 12 with a heating function.

[0052] Exemplarily, as Figure 3 shown, the mold body 100 can extend in the vertical direction to facilitate demolding of the mold body 100 under the action of gravity.

[0053] Exemplarily, in the case where the vacuum chamber 101 is evacuated, a plurality of adsorption holes 1301 adsorb the furnace liner raw material 2 on the side wall 130 and wrap the heating element 1. The heating element 1 and the furnace liner raw material 2 adsorbed on the side wall 130 can be separated from the mold body 100 together along the extending direction of the mold body 100.

[0054] Exemplarily, the heating element 1 can be a heating wire or a heating tube.

[0055] Exemplarily, when the heating element 1 is a heating wire, the shape of the heating wire can be spiral, straight, curved, or any other shape.

[0056] In some embodiments, the heating element 1 includes a heating wire 1001. The heating wire 1001 is spirally wound around the fixing rod 600. The mold assembly 10 further includes a positioning member 700. The positioning member 700 is detachably connected to the top 110 and is configured to fix the ends of the heating wire 1001 to prevent the heating wire 1001 from loosening or falling off the fixing rod 600.

[0057] Exemplarily, as Figure 1 shown, the number of the fixing rods 600 is multiple. The multiple fixing rods 600 are arranged circumferentially along the mold body 100. The number of the positioning members 700 is one. The number of the heating wires 1001 is one. One heating wire 1001 is spirally wound around the multiple fixing rods 600. The positioning member 700 fixes the two ends of the heating wire 1001.

[0058] Exemplarily, the number of the heating wires 1001 can be multiple. The number of the positioning members 700 can be multiple. The multiple heating wires 1001 are respectively spirally wound around the multiple fixing rods 600. One positioning member 700 fixes the two ends of one heating wire 1001. The multiple heating wires 1001 are respectively electrically connected to multiple power sources to enable the multiple heating wires 1001 to generate heat respectively, so as to enable the multiple heating wires 1001 to heat multiple regions of the annular furnace liner 12 respectively.

[0059] In some embodiments, as Figure 1 、Figure 8 and Figure 9 As shown in Figure 9 , the positioning member 700 is provided with at least one positioning groove 701, and the positioning groove 701 is configured to fix the end of the heating wire 1001. The positioning groove 701 is provided with an upper limiting portion 7011, a lower limiting portion 7012, and a side limiting portion 7013 connecting the upper limiting portion 7011 and the lower limiting portion 7012, so as to realize three-sided positioning of the end of the heating wire 1001 by using the upper limiting portion 7011, the lower limiting portion 7012, and the side limiting portion 7013.

[0060] Exemplarily, as Figure 8 shown, the positioning member 700 is provided with a plurality of positioning grooves 701.

[0061] In some embodiments, as Figure 1 and Figure 6 shown, the top 110 is provided with a flange 1110. The flange 1110, the side wall 130 of the mold body 100, and the supporting cover 200 enclose a molding space 102, and the molding space 102 is configured to accommodate the annular furnace liner 12. The flange 1110 is provided with a plurality of through holes 1111, and the number of the fixing rods 600 is multiple. The fixing rod 600 includes an abutting portion 610 and a fixing portion 620. The abutting portion 610 abuts against the side of the flange 1110 away from the supporting cover 200, and the fixing portion 620 is connected to the abutting portion 610 and passes through the through hole 1111.

[0062] In some embodiments, one side of the supporting cover 200 close to the mold body 100 is provided with a plurality of limiting holes 203. The plurality of fixing rods 600 respectively pass through the plurality of through holes 1111 and are respectively inserted into the plurality of limiting holes 203, so as to facilitate the disassembly of the fixing rods 600 and facilitate the limitation of the positions of the plurality of fixing rods 600.

[0063] Exemplarily, the limiting hole 203 can be a through hole or a blind hole. Figure 4 、 Figure 6 and Figure 7 show that the limiting hole 203 is a through hole.

[0064] In some embodiments, as Figure 1 、 Figure 8 and Figure 10As shown, a flange 1110 is provided at the top 110. The positioning member 700 includes a positioning portion 710, a first connecting portion 720, and a second connecting portion 730. The positioning portion 710 extends along the extending direction of the mold body 100, and a positioning groove 701 is provided on the positioning portion 710. The first connecting portion 720 is connected to the positioning portion 710, and the first connecting portion 720 is disposed on the side of the flange 1110 away from the supporting cover 200 and is detachably connected to the flange 1110. The extending direction of the first connecting portion 720 intersects with the extending direction of the positioning portion 710. The second connecting portion 730 is connected to the positioning portion 710, and the second connecting portion 730 is disposed on the side of the supporting cover 200 away from the mold body 100 and is detachably connected to the supporting cover 200. The extending direction of the second connecting portion 730 intersects with the extending direction of the positioning portion 710.

[0065] Exemplarily, the extending direction of the first connecting portion 720 is perpendicular to the extending direction of the positioning portion 710, and the extending direction of the second connecting portion 730 is perpendicular to the extending direction of the positioning portion 710.

[0066] By detachably connecting the positioning member 700 to the flange 1110 and the supporting cover 200, the stability of the positioning member 700 is ensured.

[0067] In some embodiments, as Figure 3 and Figure 6 shown, an air extraction port 1202 is provided at the bottom 120. The air extraction port 1202 is configured to communicate with the air extraction device 3 and the vacuum chamber 101, so that the air extraction device 3 extracts the gas in the vacuum chamber 101. The supporting cover 200 is provided with an avoidance port 204, and the avoidance port 204 is configured to expose the air extraction port 1202.

[0068] In the embodiments of the present application, if not clearly defined, the form of connection can be detachably connected by means of bolts and nuts, screws, buckles, magnetic attraction, etc. In some connections, if there is no special requirement for the form of detachable cooperation, non-detachable connection can be carried out by means of welding, bonding, etc.

[0069] The basic principles of the present application have been described above in combination with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purpose of illustration and easy understanding, rather than limitations, and the above details do not limit the present application to necessarily adopt the above specific details to implement.

[0070] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms that mean "including but not limited to" and can be used interchangeably with each other. The word "or" and "and" used herein refer to the phrase "and / or" and can be used interchangeably with it, unless the context clearly indicates otherwise. The phrase "such as" used herein refers to the phrase "such as but not limited to" and can be used interchangeably with it.

[0071] It should also be noted that in the devices, equipment, and methods of this application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of this application.

[0072] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0073] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. A mold assembly, characterized in that, configured to prepare an annular furnace liner, and the mold assembly includes: a mold body, including a top and a bottom arranged oppositely, and a side wall connecting the top and the bottom, the top, the bottom and the side wall enclose a vacuum chamber, and the side wall is provided with a plurality of adsorption holes communicating the vacuum chamber with the outside, wherein, when the vacuum chamber is evacuated, the plurality of adsorption holes adsorb the furnace liner raw material outside the side wall to form the annular furnace liner; a supporting cover, detachably connected to the bottom, and configured to be able to support the furnace liner raw material adsorbed on the side wall; a carrier, connected to the top, and configured to suspend the mold body and the supporting cover.

2. The mold assembly according to claim 1, wherein the bottom is provided with a screw rod, the supporting cover is provided with a first through hole, and the mold assembly further includes: a first locking member, provided with a first threaded portion, the screw rod passes through the first through hole and is screwed with the first threaded portion, so that the first locking member abuts against the side of the supporting cover away from the mold body; or the bottom is provided with a second threaded portion, the supporting cover is provided with a second through hole, and the mold assembly further includes: a second locking member, provided with a threaded section, abuts against the side of the supporting cover away from the mold body, the threaded section passes through the second through hole and is screwed with the second threaded portion.

3. The mold assembly according to claim 2, wherein when the mold assembly includes the first locking member, the first locking member includes: a wing nut.

4. The mold assembly according to any one of claims 1 to 3, characterized in that The annular furnace liner includes a heating element and the furnace liner raw material wrapping the heating element; wherein, the mold assembly further includes: at least one fixing rod, connected to the top and extending along the extending direction of the mold body, and the heating element can be sleeved on the fixing rod.

5. The mold assembly according to claim 4, characterized in that, The heating element includes a heating wire, and the heating wire is spirally wound around the fixing rod; wherein, the mold assembly further includes: a positioning member, detachably connected to the top, and configured to fix the end of the heating wire.

6. The mold assembly according to claim 5, characterized in that, The positioning member is provided with at least one positioning groove, and the positioning groove is configured to fix the end of the heating wire; wherein, the positioning groove is provided with an upper limiting portion, a lower limiting portion and a side limiting portion connecting the upper limiting portion and the lower limiting portion, so as to realize three-sided positioning of the end of the heating wire by using the upper limiting portion, the lower limiting portion and the side limiting portion.

7. The mold assembly according to claim 4, wherein The top is provided with a flange, and the flange, the side wall of the mold body and the supporting cover enclose a forming space, and the forming space is configured to accommodate the annular furnace liner; wherein, the flange is provided with a plurality of through holes, and the number of the fixing rods is multiple; wherein, the fixing rod includes: an abutting portion, abutting against the side of the flange away from the supporting cover; a fixing portion, connected to the abutting portion and passing through the through hole.

8. The mold assembly according to claim 7, wherein, The side of the supporting cover close to the mold body is provided with a plurality of limiting holes; wherein, the plurality of fixing rods respectively pass through the plurality of through holes and are respectively inserted into the plurality of limiting holes.

9. The mold assembly according to claim 6, wherein The top is provided with a flange, and the positioning member includes: The positioning part extends along the extending direction of the mold body and is provided with the positioning groove; The first connecting part is connected to the positioning part, is arranged on the side of the flange away from the supporting cover, and is detachably connected to the flange. Wherein, the extending direction of the first connecting part intersects with the extending direction of the positioning part; The second connecting part is connected to the positioning part, is arranged on the side of the supporting cover away from the mold body, and is detachably connected to the supporting cover. Wherein, the extending direction of the second connecting part intersects with the extending direction of the positioning part.

10. The mold assembly according to any one of claims 1 to 3, characterized in that, The bottom is provided with an air extraction port, and the air extraction port is configured to communicate an air extraction device with the vacuum chamber so that the air extraction device extracts the gas in the vacuum chamber; Wherein, the supporting cover is provided with an avoidance port, and the avoidance port is configured to expose the air extraction port.

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