A forming device and manufacturing method for a gypsum mold

Abstract

A forming device and manufacturing method for a gypsum mold, comprising a sheet mold forming mechanism, a mold sleeve, and a bottom mold forming mechanism. The partition of the sheet mold forming mechanism has a positioning side and a mold opening side. Any mold opening side is respectively connected to two adjacent positioning sides, and a sheet mold core is provided on each mold opening side; the mold sleeve is sleeved on the outer peripheral side of the sheet mold forming mechanism, each positioning side is in surface contact with the mold sleeve, and the outer peripheral side of the chassis is in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between any mold opening side and the chassis and the mold sleeve; a bottom mold core is provided on the upper side of the base of the bottom mold forming mechanism, and a bottom mold forming cavity is formed between the base and the movable sleeve below it; raw materials can be simultaneously poured into the bottom mold forming cavity and a plurality of sheet mold forming cavities to respectively form a bottom mold and a sheet mold; the bottom mold and the sheet mold can be spliced with each other to form a gypsum mold. The present invention solves the problem of different gypsum expansion rates, has good quality and low price, and solves the problem of misalignment of the joint line.

Description

Technical Field

[0001] The present invention relates to the field of gypsum mold production, and in particular to a forming device and manufacturing method for a gypsum mold. Background Art

[0002] Ceramics are various products made from materials obtained by pulverizing, mixing, shaping, and calcining natural clay and various natural minerals as the main raw materials.

[0003] In the ceramic production industry, gypsum molds are the most commonly used traditional slip casting molds, such as for the forming of sanitary ceramics, household ceramics, special ceramics with complex shapes and structures, and other types of ceramics. Compared with slip casting molds made of other materials, gypsum molds have the advantages of rich raw material sources, low price, simple manufacturing process, high water absorption rate, good dimensional stability, etc.

[0004] Traditional gypsum molds are all split type, generally composed of a bottom mold and two half molds. The manufacturing process is to first make the bottom mold according to the master mold, then make the first half mold according to the bottom mold and the master mold, and then make the second half mold from the first half mold and the master mold. From the above process, it can be seen that before making the first half mold, it is necessary to wait for the bottom mold to be formed and hardened, and before making the second half mold, it is necessary to wait for the first half mold to be formed and hardened. Due to the long waiting time, in order to achieve pipeline production in traditional industry, the commonly used method is to first pour a bucket of gypsum raw material to form the bottom mold, then pour a second bucket of raw material to form the first half mold, and finally pour a third bucket of raw material to form the second half mold. The problem with this method is that it is difficult to ensure that the three buckets of gypsum raw materials have the same setting expansion rate, which results in the joints between the formed bottom mold and the two half molds not being able to be guaranteed to be flush, leading to misalignment of the joint lines and thus an uneven surface of the finally produced ceramic. Summary of the Invention

[0005] The present invention provides a forming device and manufacturing method for a gypsum mold, and its main purpose is to overcome the defect that the surface of the ceramic made by using the gypsum mold obtained by the prior art may be uneven.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A forming device for a gypsum mold, comprising

[0008] a sheet mold forming mechanism, which includes a chassis and a partition. The partition is fixedly connected to the upper side of the chassis, and the partition has a plurality of positioning sides and a plurality of mold opening sides. Any one of the mold opening sides is respectively connected to two adjacent positioning sides, and a sheet mold core is provided on each mold opening side;

[0009] A mold sleeve is sleeved on the outer peripheral side of the sheet mold forming mechanism. Each of the positioning side surfaces is in surface contact with the mold sleeve, and the outer peripheral side of the chassis is also in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between any one of the mold opening side surfaces, the chassis and the mold sleeve;

[0010] A bottom mold forming mechanism includes a base and a lower movable sleeve. A bottom mold core is provided on the upper side of the base; the lower movable sleeve is detachably installed on the base and is wound around the outside of the bottom mold core, so that a bottom mold forming cavity is formed between the base and the lower movable sleeve;

[0011] Raw materials can be simultaneously poured into the bottom mold forming cavity and a plurality of sheet mold forming cavities to respectively form a bottom mold and a plurality of sheet molds; the bottom mold and the plurality of sheet molds can be spliced with each other to form the gypsum mold.

[0012] Further, an activity block is provided in each of the sheet mold forming cavities. The activity block is horizontally detachably embedded on the chassis and protrudes upward from the upper surface of the chassis, and one side surface of each activity block is in surface contact with the mold sleeve surface; a plurality of lower grooves corresponding to the parts of the plurality of activity blocks protruding from the upper surface of the chassis are provided on the upper side of the base.

[0013] Further, the mold sleeve includes a plurality of outer sleeves. The plurality of outer sleeves are sequentially spliced with each other, and each of the positioning side surfaces is in surface contact with the outer sleeve surface, and the outer peripheral side of the chassis is also in surface contact with the outer sleeve surface.

[0014] Further, a top mold forming mechanism is further included. The top mold forming mechanism includes a top seat and an upper movable sleeve. A top mold core is provided on the upper side of the top seat; the upper movable sleeve is detachably installed on the top seat and is wound around the outside of the top mold core, so that a top mold forming cavity is formed between the top seat and the upper movable sleeve; raw materials can be simultaneously poured into the bottom mold forming cavity, the top mold forming cavity and a plurality of sheet mold forming cavities to respectively form a bottom mold, a top mold and a plurality of sheet molds; the bottom mold, the top mold and the plurality of sheet molds can be spliced with each other to form the gypsum mold.

[0015] Further, the number of the outer sleeves is the same as the number of the sheet mold forming cavities. A convex block located in the sheet mold forming cavity is connected to each of the outer sleeves, and the upper surfaces of the plurality of convex blocks are flush; a plurality of upper grooves corresponding to the plurality of convex blocks one by one are provided on the upper side of the top seat.

[0016] Further, both the chassis and the base are in a disc shape.

[0017] A method for manufacturing a gypsum mold includes the following steps:

[0018] 1) Prepare the sheet mold forming mechanism and the bottom mold forming mechanism, and there is a bottom mold forming cavity on the bottom mold forming mechanism;

[0019] 2) Prepare the mold sleeve and sleeved it on the outer peripheral side of the sheet mold forming mechanism. At this time, each positioning side on the partition plate in the sheet mold forming mechanism is in surface contact with the mold sleeve, and the outer peripheral side of the chassis in the sheet mold forming mechanism is also in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between the mold opening side on any partition plate and the chassis and the mold sleeve;

[0020] 3) Prepare the gypsum raw material;

[0021] 4) Pour the gypsum raw material into the bottom mold forming cavity and a plurality of sheet mold forming cavities simultaneously;

[0022] 5) After the gypsum raw material is cured, disassemble the mold sleeve, take out the plurality of sheet molds formed by the plurality of sheet mold forming cavities, and take out the bottom mold formed by the bottom mold forming cavity; the plurality of sheet molds and the bottom mold are the gypsum molds.

[0023] Further, step 5 is specifically: after the gypsum raw material is cured, disassemble the mold sleeve; then first horizontally disassemble each movable block embedded on the chassis, and then take out the plurality of sheet molds separately in a transverse movement manner; take out the bottom mold formed by the bottom mold forming cavity; the plurality of sheet molds and the bottom mold are the gypsum molds.

[0024] Further, it includes the following steps:

[0025] 1) Prepare the sheet mold forming mechanism, the top mold forming mechanism and the bottom mold forming mechanism, there is a bottom mold forming cavity on the bottom mold forming mechanism, and there is a top mold forming cavity on the top mold forming mechanism;

[0026] 2) Prepare the mold sleeve and sleeved it on the outer peripheral side of the sheet mold forming mechanism. At this time, each positioning side on the partition plate in the sheet mold forming mechanism is in surface contact with the mold sleeve, and the outer peripheral side of the chassis in the sheet mold forming mechanism is also in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between the mold opening side on any partition plate and the chassis and the mold sleeve;

[0027] 3) Prepare the gypsum raw material;

[0028] 4) Pour the gypsum raw material into the bottom mold forming cavity, the top mold forming cavity and a plurality of sheet mold forming cavities simultaneously;

[0029] 5) After the gypsum raw material is cured, disassemble the mold sleeve, take out the plurality of sheet molds formed by the plurality of sheet mold forming cavities, take out the bottom mold formed by the bottom mold forming cavity, and take out the top mold formed by the top mold forming cavity; the plurality of sheet molds and the bottom mold and the top mold are the gypsum molds.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. The structure of the present invention is simple and practical. By setting a sheet mold forming mechanism and a bottom mold forming mechanism, and arranging a partition on the chassis in the sheet mold forming mechanism, operators can complete the forming of the bottom mold and multiple sheet molds in one process. That is, in the traditional technology, to complete the forming of a set of gypsum molds, at least three buckets of gypsum raw materials with different expansion rates are required, while with the solution of the present invention, only one bucket of gypsum raw material is needed to complete the forming of a set of gypsum molds, without the problem of different expansion rates, with good quality and low price, solving the problem of misalignment of the joint line due to expansion. The damage degree of the mold is the same. In the case of damage to a single sheet mold, it is easy to find a sheet mold at the same position for replacement, without scrapping the entire set of gypsum molds. Therefore, materials are saved and it is more environmentally friendly. In addition, the use of mold release agent in the traditional process is also eliminated; it solves the defect that some products cannot be molded and samples need to be replaced with silicone; it solves the problems that samples are easily damaged and deformed during the molding process; and the utilization rate of the gypsum molds made is more than 20% higher than that of the gypsum molds made by traditional processes.

[0032] 2. In the present invention, by setting a movable block, a card slot can be formed at the bottom of the outer periphery of the sheet mold formed in the sheet mold forming cavity. By setting a lower groove on the base, a card projection adapted to the card slot can be formed on the bottom mold formed in the bottom mold forming cavity. Thus, when the sheet mold and the bottom mold are spliced, the card projection can be embedded in the card slot, effectively preventing the sheet mold from moving horizontally relative to the bottom mold, improving the splicing stability, and reducing the defective rate of the ceramics prepared later.

[0033] 3. In the present invention, by setting a convex block, a card slot can also be formed at the top of the outer periphery of the sheet mold formed in the sheet mold forming cavity. By setting an upper groove on the top seat, a card projection adapted to the card slot can be formed on the top mold formed in the top mold forming cavity. Thus, when the sheet mold and the top mold are spliced, the card projection can be embedded in the card slot, effectively preventing the sheet mold from moving horizontally relative to the top mold, further improving the splicing stability, and further reducing the defective rate of the ceramics prepared later. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the sheet mold forming mechanism described in the present invention.

[0035] Figure 2 is Figure 1 a schematic structural diagram of the installation of the movable block.

[0036] Figure 3 It is a schematic structural diagram of the sheet mold forming mechanism described in Embodiment 1 with a mold sleeve wound around the outside.

[0037] Figure 4 This is a schematic structural view of the base in the bottom mold forming mechanism described in the present invention.

[0038] Figure 5 This is a schematic structural view of the bottom mold forming mechanism described in the present invention.

[0039] Figure 6 This is a schematic structural view of the outer side of the sheet mold forming mechanism described in the second embodiment, around which the mold sleeve is provided.

[0040] Figure 7 This is a schematic structural view of the top seat in the top mold forming mechanism described in the present invention.

[0041] Figure 8 This is a schematic structural view of the top mold forming mechanism described in the present invention.

[0042] Figure 9 This is a schematic structural view of the gypsum mold described in the first embodiment.

[0043] Figure 10 For Figure 9 split structural schematic diagram.

[0044] Figure 11 This is a schematic structural view of the gypsum mold described in the second embodiment.

[0045] Figure 12 For Figure 11 split structural schematic diagram. Detailed implementation manners

[0046] The following describes the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0047] First embodiment

[0048] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 , Figure 10 . A forming device for a gypsum mold, comprising

[0049] a sheet mold forming mechanism 1, which includes a chassis 11 and a partition 12. The partition 12 is fixedly connected to the upper side of the chassis 11, and the partition 12 has a plurality of positioning sides 121 and a plurality of mold opening sides 122. Any one of the mold opening sides 122 is respectively connected to two adjacent positioning sides 121, and a sheet mold core 13 is provided on each mold opening side 122;

[0050] The mold sleeve 2 is sleeved on the outer peripheral side of the sheet mold forming mechanism 1. Each positioning side surface 121 is in surface contact with the mold sleeve 2, and the outer peripheral side of the chassis 11 is also in surface contact with the mold sleeve 2, so that a sheet mold forming cavity 14 is formed between any mold opening side surface 122 and the chassis 11 and the mold sleeve 12;

[0051] The bottom mold forming mechanism 3 includes a base 31 and a lower movable sleeve 32. A bottom mold core 33 is provided on the upper side of the base 31; the lower movable sleeve 32 is detachably installed on the base 31 and wound around the bottom mold core 33, so that a bottom mold forming cavity 34 is formed between the base 31 and the lower movable sleeve 32;

[0052] It is possible to simultaneously pour raw materials into the bottom mold forming cavity 3 and a plurality of sheet mold forming cavities 1 to respectively form a bottom mold 4 and a plurality of sheet molds 5; the bottom mold 4 and the plurality of sheet molds 5 can be spliced with each other to form a gypsum mold 100.

[0053] By providing the sheet mold forming mechanism 1 and the bottom mold forming mechanism 3 in the present invention, and arranging a partition plate 12 on the chassis 11 in the sheet mold forming mechanism 1, an operator can simultaneously complete the forming of the bottom mold 4 and a plurality of sheet molds 5 in one process. That is, in the traditional technology, to complete the forming of a set of gypsum molds, at least three barrels of gypsum raw materials with different expansion rates are required, while with the solution of the present invention, only one barrel of gypsum raw materials is needed to complete the forming of a set of gypsum molds. There is no problem of different expansion rates, the quality is good, the price is low, the problem of misalignment of the joint line is solved, the degree of mold damage is the same. In the case of damage to a single sheet mold, it is easy to find a sheet mold at the same position for replacement, and there is no need to scrap the entire set of gypsum molds. Therefore, materials are saved and it is more environmentally friendly; in addition, the use of mold release agents in the traditional process is also eliminated; the defect that some products cannot be molded and samples need to be replaced with silica gel is solved; the problem that samples are easily damaged during the molding process is solved; moreover, the utilization rate of the gypsum mold made is more than 20% higher than that of the gypsum mold made by the traditional process.

[0054] Specifically,

[0055] Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 9 、 Figure 10 . In this embodiment, the number of the positioning side surfaces 121 and the mold opening side surfaces 122 is the same, both are two, that is, the number of the sheet molds after forming is two. However, it is not limited to two. The number of the positioning side surfaces 121 and the mold opening side surfaces 122 can also be three, four, five, six, etc., that is, the number of the sheet molds after forming can be three, four, five, six, etc.

[0056] Referring toFigure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 , Figure 10 . A movable block 6 is provided in each sheet mold forming cavity 14. The movable block 6 is detachably embedded in the chassis 11 in the horizontal direction, protrudes upward from the upper surface 111 of the chassis 11, and one side surface of each movable block 6 is in surface contact with the mold sleeve 2; a plurality of lower grooves 311 are provided on the upper side of the base 31, which correspond one by one to the portions 61 of the plurality of movable blocks 6 protruding from the upper surface of the chassis. By providing the movable block 6, a card slot 51 can be formed at the bottom of the outer peripheral side of the sheet mold 5 formed in the sheet mold forming cavity 14. By providing the lower grooves 311 on the base 31, a card projection 41 adapted to the card slot 51 can be formed on the bottom mold 4 formed in the bottom mold forming cavity 34. Thus, when the sheet mold 5 is spliced with the bottom mold 4, the card projection 41 can be embedded in the card slot 51, effectively preventing the sheet mold 5 from moving horizontally relative to the bottom mold 4, improving the splicing stability, and reducing the defective rate of the ceramics prepared later.

[0057] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 , Figure 10 . The mold sleeve 2 includes a plurality of outer sleeves 22, the plurality of outer sleeves 22 are spliced with each other in sequence, and each positioning side surface 121 is in surface contact with the outer sleeve 22. The outer peripheral side of the chassis 11 is also in surface contact with the outer sleeve 22. In this embodiment, the number of the outer sleeves 22 can correspond to the number of the sheet mold forming cavities, or can be fixed to two, three, etc. according to needs.

[0058] In this embodiment, both the chassis and the base are in a disc shape. Of course, it is not limited to the disc shape, and can also be square, oval, etc.

[0059] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 , Figure 10 . A method for manufacturing a gypsum mold includes the following steps:

[0060] 1) Prepare the sheet mold forming mechanism 1 and the bottom mold forming mechanism 3. The bottom mold forming mechanism 3 has a bottom mold forming cavity 34;

[0061] 2) Prepare the mold sleeve 2 and sleave it on the outer peripheral side of the sheet mold forming mechanism 1. At this time, each positioning side 121 on the partition plate 12 in the sheet mold forming mechanism 1 is in surface contact with the mold sleeve 2, and the outer peripheral side of the chassis 11 in the sheet mold forming mechanism 1 is also in surface contact with the mold sleeve 2, so that a sheet mold forming cavity 14 is formed between the mold opening side 122 on any partition plate 12 and the chassis 11 and the mold sleeve 2. In addition, conventional leak-proof fillers can be applied at the joints between the mold sleeve and the chassis and between the mold sleeve and the partition plate as needed to prevent leakage after the gypsum raw material is poured in the subsequent process.

[0062] 3) Prepare the gypsum raw material.

[0063] 4) Pour the gypsum raw material into the bottom mold forming cavity 34 and a plurality of sheet mold forming cavities 14 simultaneously.

[0064] 5) After the gypsum raw material is cured, remove the mold sleeve 2, take out a plurality of sheet molds 5 formed through the plurality of sheet mold forming cavities 14, and take out the bottom mold 4 formed through the bottom mold forming cavity 34. The plurality of sheet molds 5 and the bottom mold 4 are the gypsum molds.

[0065] Among them, step 5 is specifically as follows: after the gypsum raw material is cured, remove the outer sleeve 22; then, horizontally remove each movable block 6 embedded in the chassis 11, and then horizontally move to take out a plurality of sheet molds 5 respectively; take out the bottom mold 4 formed through the bottom mold forming cavity 34; the plurality of sheet molds 5 and the bottom mold 4 are the gypsum mold 100.

[0066] Embodiment Two

[0067] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 11 、 Figure 12 。This embodiment further includes

[0068] a top mold forming mechanism 7, which includes a top seat 71 and an upper movable sleeve 72. A top mold core 73 is provided on the upper side of the top seat 71; the upper movable sleeve 72 is detachably installed on the top seat 71 and is wound around the top mold core 73, so that a top mold forming cavity 74 is formed between the top seat 71 and the upper movable sleeve 72; it is possible to pour raw materials into the bottom mold forming cavity 34, the top mold forming cavity 74 and a plurality of sheet mold forming cavities 14 simultaneously to form the bottom mold 4, the top mold 8 and a plurality of sheet molds 5 respectively; the bottom mold 4, the top mold 8 and a plurality of sheet molds 5 can be spliced with each other to form the above-mentioned gypsum mold 100.

[0069] In this embodiment, the number of the outer sleeves 22 is the same as that of the sheet mold forming cavities. A convex block 23 located in the sheet mold forming cavity 14 is connected to each outer sleeve 22, and the upper surfaces of a plurality of convex blocks 23 are flush. A plurality of upper grooves 711 corresponding to the plurality of convex blocks one by one are formed in the upper side of the top seat 71. By providing the convex blocks 23, a card slot 52 can also be formed at the top of the outer peripheral side of the sheet mold 5 formed in the sheet mold forming cavity 14. By providing the upper grooves 711 in the top seat 71, a clamping convex 81 adapted to the card slot 52 can be formed on the top mold 8 formed in the top mold forming cavity 74. Thus, when the sheet mold 5 and the top mold 8 are spliced, the clamping convex 81 can be embedded in the card slot 52, effectively preventing the sheet mold 5 from moving horizontally relative to the top mold 8, further improving the splicing stability, and further reducing the defective rate of the ceramics prepared later.

[0070] In the two embodiments of the present invention, the upper movable sleeve and the lower movable sleeve adopted can be of the same structure as the above-mentioned mold sleeve, or an active sleeve with flexibility can be adopted. During use, in both cases, the upper movable sleeve is sleeved on the outer peripheral side of the top seat, and the lower movable sleeve is sleeved on the outer peripheral side of the bottom seat.

[0071] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 11 、 Figure 12 . A method for manufacturing a gypsum mold includes the following steps:

[0072] 1) Prepare the sheet mold forming mechanism 1, the top mold forming mechanism 7 and the bottom mold forming mechanism 3. The bottom mold forming mechanism 3 has a bottom mold forming cavity 34, and the top mold forming mechanism 7 has a top mold forming cavity 74;

[0073] 2) Prepare the mold sleeve 2 and sleeve it on the outer peripheral side of the sheet mold forming mechanism 1. At this time, each positioning side 121 on the partition plate 12 in the sheet mold forming mechanism 1 is in surface contact with the mold sleeve 2, and the outer peripheral side of the chassis 11 in the sheet mold forming mechanism is also in surface contact with the mold sleeve 2, so that a sheet mold forming cavity 14 is formed between the mold opening side 122 on any partition plate 12, the chassis 11 and the mold sleeve 2;

[0074] 3) Prepare the gypsum raw material;

[0075] 4) Pour the gypsum raw material into the bottom mold forming cavity 34, the top mold forming cavity 74 and a plurality of sheet mold forming cavities 14 simultaneously;

[0076] 5) After the gypsum raw material is cured, remove the mold sleeve 2, take out the plurality of sheet molds 5 formed by the plurality of sheet mold forming cavities 14, take out the bottom mold 4 formed by the bottom mold forming cavity 34, and take out the top mold 8 formed by the top mold forming cavity 74; the plurality of sheet molds 5, the bottom mold 4, and the top mold 8 are the gypsum mold 100.

[0077] Among them, step 5 is specifically: after the gypsum raw material is cured, remove each outer sleeve 22 in a horizontal disassembly manner; then, first horizontally disassemble each movable block 6 embedded on the chassis 11, and then horizontally move to take out the plurality of sheet molds 5 respectively; take out the bottom mold 4 formed by the bottom mold forming cavity 34; the plurality of sheet molds 5 and the bottom mold 4 are the gypsum mold 100.

[0078] The above is only the specific implementation manner of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantive modification of the present invention using this concept shall fall within the scope of infringement of the protection scope of the present invention.

Claims

1. A forming device for a gypsum mold, characterized in that: including a sheet mold forming mechanism, which includes a chassis and a partition board. The partition board is fixedly connected to the upper side of the chassis, and the partition board has a plurality of positioning sides and a plurality of mold opening sides. Any one of the mold opening sides is respectively connected to two adjacent positioning sides, and a sheet mold core is provided on each of the mold opening sides; a mold sleeve, which is sleeved on the outer peripheral side of the sheet mold forming mechanism. Each of the positioning sides is in surface contact with the mold sleeve, and the outer peripheral side of the chassis is also in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between any one of the mold opening sides and the chassis and the mold sleeve; the mold sleeve includes a plurality of outer sleeves, and the plurality of outer sleeves are sequentially spliced with each other, and each of the positioning sides is in surface contact with the outer sleeve, and the outer peripheral side of the chassis is also in surface contact with the outer sleeve; a bottom mold forming mechanism, which includes a base and a lower movable sleeve. A bottom mold core is provided on the upper side of the base; the lower movable sleeve is detachably installed on the base and is wound around the bottom mold core, so that a bottom mold forming cavity is formed between the base and the lower movable sleeve; a movable block is provided in each of the sheet mold forming cavities. The movable block is horizontally detachably embedded in the chassis and protrudes upward from the upper surface of the chassis, and one side of each movable block is in surface contact with the mold sleeve; a plurality of lower grooves corresponding to the parts of the plurality of movable blocks protruding from the upper surface of the chassis are provided on the upper side of the base; The raw material can be simultaneously poured into the bottom mold forming cavity and the plurality of sheet mold forming cavities to respectively form a bottom mold and a plurality of sheet molds; the bottom mold and the plurality of sheet molds can be spliced with each other to form the gypsum mold.

2. The forming device of a gypsum mold according to claim 1, characterized in that: It further includes a top mold forming mechanism. The top mold forming mechanism includes a top seat and an upper movable sleeve. A top mold core is provided on the upper side of the top seat; the upper movable sleeve is detachably installed on the top seat and is wound around the top mold core, so that a top mold forming cavity is formed between the top seat and the upper movable sleeve; the raw material can be simultaneously poured into the bottom mold forming cavity, the top mold forming cavity and the plurality of sheet mold forming cavities to respectively form a bottom mold, a top mold and a plurality of sheet molds; the bottom mold, the top mold and the plurality of sheet molds can be spliced with each other to form the gypsum mold.

3. The forming device for a gypsum mold according to claim 2, characterized in that: The number of the outer sleeves is the same as the number of the sheet mold forming cavities. A convex block located in the sheet mold forming cavity is connected to each of the outer sleeves, and the upper surfaces of the plurality of convex blocks are flush; a plurality of upper grooves corresponding to the plurality of convex blocks are provided on the upper side of the top seat.

4. The molding device for a gypsum mold according to claim 1, characterized in that: Both the chassis and the base are in a disc shape.

5. A method for manufacturing a gypsum mold using the molding device described in claim 1 or 4, characterized in that, including the following steps: 1) Prepare the sheet mold forming mechanism and the bottom mold forming mechanism, and the bottom mold forming mechanism has a bottom mold forming cavity; 2) Prepare the mold sleeve and sleeve it on the outer peripheral side of the sheet mold forming mechanism. At this time, each positioning side on the partition board in the sheet mold forming mechanism is in surface contact with the mold sleeve, and the outer peripheral side of the chassis in the sheet mold forming mechanism is also in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between any one of the mold opening sides on the partition board and the chassis and the mold sleeve; 3) Prepare the gypsum raw material; 4) Pour the gypsum raw material into the bottom mold forming cavity and the plurality of sheet mold forming cavities simultaneously; 5) After the gypsum raw material is solidified, remove the mold sleeve, take out a plurality of sheet molds formed by a plurality of sheet mold forming cavities, and take out the bottom mold formed by the bottom mold forming cavity; the plurality of sheet molds and the bottom mold are the gypsum molds.

6. The method for manufacturing a gypsum mold according to claim 5, characterized in that: Step 5 is specifically as follows: after the gypsum raw material is solidified, remove the mold sleeve; then, horizontally remove each movable block embedded in the chassis, and then take out a plurality of sheet molds separately in a transverse movement manner; take out the bottom mold formed by the bottom mold forming cavity; the plurality of sheet molds and the bottom mold are the gypsum molds.

7. A method for manufacturing a gypsum mold using the molding device as described in claim 2 or 3, characterized in that, It includes the following steps: 1) Prepare a sheet mold forming mechanism, a top mold forming mechanism, and a bottom mold forming mechanism. The bottom mold forming mechanism has a bottom mold forming cavity, and the top mold forming mechanism has a top mold forming cavity; 2) Prepare a mold sleeve and sleeved it on the outer peripheral side of the sheet mold forming mechanism. At this time, each positioning side on the partition plate in the sheet mold forming mechanism is in surface contact with the mold sleeve, and the outer peripheral side of the chassis in the sheet mold forming mechanism is also in surface contact with the mold sleeve, so that a sheet mold forming cavity is formed between the mold opening side on any partition plate and the chassis and the mold sleeve; 3) Prepare the gypsum raw material; 4) Pour the gypsum raw material into the bottom mold forming cavity, the top mold forming cavity, and a plurality of sheet mold forming cavities simultaneously; 5) After the gypsum raw material is solidified, remove the mold sleeve, take out a plurality of sheet molds formed by a plurality of sheet mold forming cavities, take out the bottom mold formed by the bottom mold forming cavity, and take out the top mold formed by the top mold forming cavity; the plurality of sheet molds and the bottom mold and the top mold are the gypsum molds.

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