Quick-dry high-strength gypsum slurry applied to gypsum doll and preparation equipment of quick-dry high-strength gypsum slurry

Abstract

The invention discloses quick-dry high-strength gypsum slurry applied to a gypsum doll and preparation equipment of the quick-dry high-strength gypsum slurry, and belongs to the technical field of gypsum doll manufacturing. The gypsum slurry comprises a gypsum base material, heavy calcium carbonate powder, volcanic ash, reinforced fibers, latex powder and auxiliaries, and the problem that high fluidity and high compactness are difficult to consider at the same time is solved through the grading filling effect of the volcanic ash and the heavy calcium carbonate powder. The preparation equipment comprises a feeding assembly, a mixing assembly and a supporting assembly. The feeding assembly realizes intermittent accurate feeding by using a blocking blade body; the mixing assembly is provided with a scraping plate, so that the interference of an inner wall adhesion layer on the slurry proportioning is eliminated; the supporting assembly achieves lifting adjustment and dynamic locking of the mold box body through cooperation of a lead screw and an arc-shaped block body, and the negative pressure environment formed by the exhaust guide pipe is combined, so that slurry is forced to enter a deep cavity of the mold. While the surface fineness of the doll is ensured, the product strength and the production efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of plaster doll making technology, and in particular to a quick-drying, high-strength plaster slurry for use in plaster dolls and its preparation equipment. Background Technology

[0002] In the production of plaster figurines, to perfectly replicate the minute details of the mold (such as hair strands and clothing folds), traditional techniques often force an increase in the water-cement ratio of the plaster paste to achieve excellent fluidity. However, this approach, sacrificing density for fluidity, results in numerous micropores within the cured plaster. This significantly reduces the flexural strength of the finished product and makes the figurine highly susceptible to brittle fracture during demolding and transportation. Conversely, simply increasing the aggregate ratio to improve strength causes a sharp increase in paste viscosity, making it difficult to fill the finer details of the mold and resulting in defects such as missing material and air pockets on the finished product's surface. Therefore, achieving high fluidity and high-strength curing of the paste while maintaining a low water-cement ratio is a pressing issue in plaster material formulation.

[0003] Regarding slurry preparation and molding equipment, existing technologies also suffer from two overlooked problems: First, for high-viscosity gypsum slurry, conventional mixing equipment focuses only on central shear mixing, often neglecting the "adhesion layer effect" on the inner wall of the mixing chamber. As production progresses, the slurry easily thickens and hardens on the inner wall, not only wasting raw materials but, more seriously, the hardened flaking blocks mixed into the new slurry create internal defects, and the residual layer alters the effective volume of the mixing chamber, causing deviations in the actual proportions of slurry from batch to batch in continuous production, affecting product quality consistency. Second, in the injection molding stage, existing mold support structures are mostly statically placed, relying on gravity for natural leveling. For complex doll molds, there are often undercut structures or blind ends inside, and gravity injection under normal pressure cannot effectively expel air from these dead corners, resulting in voids in key parts of the finished product. Although existing technologies have attempted to use vibration tables, simple vibration is insufficient to completely replace the gas in the slurry within a confined space. Summary of the Invention

[0004] The present invention aims to provide a simplified quick-drying high-strength gypsum slurry and its preparation equipment, addressing the technical problems in the prior art where it is difficult to balance fluidity and strength, as well as the technical problems of wall residue interference ratio and incomplete filling of complex cavities during the preparation process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The quick-drying, high-strength plaster slurry for use on plaster figurines is made from components comprising the following percentages by weight: Gypsum substrate: 30%-40%; Heavy calcium carbonate powder: 20%-30%; Volcanic ash: 30%-40%; Reinforcing fiber: 0.5%-2%; Latex powder: 1%-8%; Water-reducing agent: 0.5%-3.5%; Retarder: 0.1%-0.2%; Defoamer: 0.1%-0.2%.

[0006] A preparation apparatus for the quick-drying, high-strength plaster slurry used in plaster figurines as described above, comprising: A frame and a support base, wherein the frame is located above the support base; The mixing chamber is fixedly connected to the top of the frame; The feeding box is fixedly connected to the top of the mixing box and communicates with the mixing box. A connecting conduit is fixedly connected to the bottom of the mixing chamber and communicates with the mixing chamber. The feed conduit is fixedly connected to the top of the support base and connected to the connecting conduit via a connecting assembly; A rectangular frame is fixedly connected to the top inner wall of the support base. An inclined groove is provided inside the rectangular frame, and the inclined groove is connected to the feed conduit. The feeding assembly, located inside the feeding box, is used to control the feeding and initial mixing of raw materials; A mixing component, disposed inside the mixing chamber, is used to thoroughly mix the raw materials; A mold box is disposed inside the support base and used in conjunction with an inclined groove. The interior of the mold box has a cavity for molding plaster dolls. A support component is disposed inside the support base to support and adjust the position of the mold box. The raw material is initially mixed by the feeding component and then fed into the mixing box. The mixing component fully mixes the raw material to form a slurry. The slurry is then transported to the cavity of the mold box for molding through the connecting conduit and the feeding conduit.

[0007] In one possible design, the connection component includes: An annular groove is formed on the outer wall of the connecting conduit; Two vertical through holes are symmetrically opened at the bottom of the outer wall of the connecting conduit and are connected to the annular groove; A connecting flange is rotatably mounted on the top of the feed conduit; A fixing ring is fixedly connected to the top of the connecting flange; Two limiting protrusions are fixedly connected to the inner walls of both sides of the fixed ring.

[0008] In one possible design, the feeding assembly includes: A fixed circular plate is fixedly connected to the inside of the feed box; A fixed rectangular plate is fixedly connected to the top of the fixed circular plate. The fixed rectangular plate has multiple strip-shaped through holes inside, and the fixed circular plate has multiple through holes II inside. Multiple limiting rings I are fixedly connected inside the fixed rectangular plate; The cover plate is connected to the top of the feed box body by hooks and tenon fasteners; Servo motor I is installed on the top of the cover plate. The output shaft of servo motor I rotates through the cover plate and is fixedly connected to a rectangular positioning protrusion. The stirring shaft rotates through multiple limiting rings I, and the top of the stirring shaft has a rectangular positioning groove that engages with a rectangular positioning protrusion. Multiple limiting rings II are fixedly sleeved on the outer wall of the stirring shaft; Multiple sealing blades are fixedly connected to both sides of the limiting ring II.

[0009] In one possible design, the hybrid component includes: A rotating circular plate is fixedly fitted onto the outer wall of the stirring shaft. The interior of the rotating circular plate has multiple through holes I. Multiple stirring blades are fixedly connected to the outer wall of the stirring shaft; Multiple connecting rings are fixedly connected to the outer wall of the stirring blade; Multiple scraper blades are fixedly connected between two connecting rings.

[0010] In one possible design, the support component includes: A sliding horizontal plate is slidably connected to the interior of the support base; The lead screw, with its threads penetrating the interior of the sliding transverse plate; Servo motor II is fixedly connected to the top of the support base, and the output shaft of servo motor II rotates through the support base and is fixedly connected to the top of the lead screw; Two L-shaped mounting plates are fixedly connected to one side of the sliding transverse plate and located at both ends of the sliding transverse plate; Multiple fixing screws, with threads penetrating the interior of the L-shaped mounting plate; Multiple threaded grooves are formed on one side of the support base and are used in conjunction with fixing screws.

[0011] In one possible design, the support component further includes: Two strip-shaped grooves are formed on both sides of the bottom of the sliding transverse plate; Two fixed protrusions are slidably connected inside the strip-shaped groove; Two arc-shaped blocks are fixedly connected to the bottom of the fixed protrusion; An L-shaped support plate is fixedly connected to one side of the top of the arc-shaped block; Two side protrusions are fixedly connected to the top of the L-shaped support plate.

[0012] In one possible design, the inner walls on both sides of the support base are provided with T-shaped sliding grooves and arc-shaped limiting grooves, and the bottom of the arc-shaped limiting grooves is connected to the T-shaped sliding grooves and is arc-shaped. A rectangular notch is provided on one side of the arc-shaped block; An I-shaped flat plate is slidably connected to the interior of the rectangular notch. A compression helical spring is fixedly connected between one end of the I-shaped plate and the inner wall of the rectangular notch. A fixed support plate is fixedly connected to the inner wall of the support base.

[0013] One possible design also includes: An exhaust duct is fixedly connected to the top side of the support base and communicates with the cavity of the mold box. A vacuum pump is connected through the exhaust duct to draw the inside of the mold box into negative pressure, so that the slurry can fully fill the cavity and avoid surface holes.

[0014] One possible design also includes: Waste collection bin is fixedly connected to the bottom inner wall of the support base; Protective cover I is fixedly connected to the top of the cover plate and protects servo motor I; Protective cover II is fixedly connected to the top of the support base and protects the servo motor II. The waste collection box is used to collect residual slurry. Protective cover I and protective cover II protect the servo motor from dust contamination.

[0015] In this application, during use, the raw materials are located on both sides of the fixed rectangular plate. At this time, the through hole I and through hole II are not in a connected state, and the sealing blade body and the limiting ring II are located inside the strip-shaped through hole. At this time, they can be sealed, thereby completing the feeding process. After feeding is completed, the cover plate can be fastened to the top of the feeding box by hooks and tenon fasteners. At this time, the rectangular positioning protrusion is engaged in the inside of the rectangular positioning groove. Servo motor I can be started. The output shaft of servo motor I drives the rectangular positioning protrusion to rotate. The rectangular positioning protrusion drives the stirring shaft to rotate. The stirring shaft drives the limit ring II and the sealing blade to rotate. At this time, the sealing blade rotates continuously inside the strip-shaped through hole, which can initially mix the raw materials and water. Furthermore, the stirring shaft drives the rotating circular plate to rotate. As the rotating circular plate rotates, through hole I continuously connects with through hole II, thereby continuously feeding the material into the interior of the mixing chamber. At the same time, the stirring shaft can drive multiple stirring blades to rotate. The stirring blades drive the external connecting ring to rotate, and the connecting ring drives the scraper to rotate. At this time, the two scraper blades can continuously scrape off the residue inside to prevent sticking. The multiple stirring blades can achieve the process of re-mixing. Furthermore, during the production of the doll, the mold box can be placed on top of two L-shaped support plates. Since the two exhaust pipes are located on one side of the T-shaped sliding groove, the I-shaped plate moves laterally under the action of the compression spiral spring, and the I-shaped plate moves out from the inside of the arc-shaped limiting groove. The two arc-shaped blocks are supported by the fixed support plate and will not fall. The two arc-shaped blocks can be far apart from each other at the lowest point, which makes it convenient to send the mold box in. After being sent in, the mold box is resisted by the side protrusions around its perimeter, ensuring the stability of the mold box. At this time, servo motor II is started. The output shaft of servo motor II drives the lead screw to rotate. The lead screw drives the sliding transverse plate to move upward. Since the bottom of the arc-shaped limiting groove is connected to the T-shaped sliding groove and is arc-shaped, the sliding transverse plate drives the two arc-shaped blocks to move upward. The arc-shaped blocks drive the I-shaped plate to move upward. Along the arc surface of the arc-shaped limiting groove, the I-shaped plate gradually enters the interior of the rectangular notch and continuously squeezes and compresses the helical spring until the sliding transverse plate moves upward and drives the mold box to move to the bottom of the rectangular frame. At this time, the inclined groove is connected to the mold box. The L-shaped mounting plate can be tightened on the corresponding threaded groove side using fixing screws to ensure the stability of the sliding transverse plate. At this point, the vacuum pump is connected to the exhaust pipe, thereby extracting the air from inside the mold box. By opening the valve on the connecting pipe, the slurry inside is discharged. Since the inside of the mold box is under negative pressure, the slurry can be sucked out to avoid residue. The inside of the mold box has a doll-shaped cavity, which can realize the preparation of dolls and avoid the formation of holes. When maintenance and cleaning of the mixing chamber are required, first unscrew the fixing screws between the connecting flange and the feed pipe to release the braking state of the connecting flange. Then rotate the connecting flange, which will drive the fixing ring to rotate. The fixing ring will drive the limiting protrusion to rotate, thereby moving the limiting protrusion from the inside of the annular groove to one side of the vertical through hole. At this point, the connecting pipe can be pulled out to disassemble the device.

[0016] Beneficial effects: 1. The gypsum slurry of the present invention, through a specific ratio of heavy calcium carbonate powder and volcanic ash, utilizes the close packing effect of particles of different sizes to maintain good thixotropy and fluidity even at a low water-cement ratio. The active components of volcanic ash provide continuous strength growth in the later stages of curing, solving the problem of traditional slurries sacrificing density in pursuit of detailed replication, resulting in gypsum figurines that possess both delicate surface texture and excellent overall strength.

[0017] 2. The mixing component in the preparation equipment is equipped with a scraper that rotates synchronously with the stirring shaft. This structure can actively clean the inner wall of the mixing chamber, breaking down the slurry's adhesion layer on the wall. This not only prevents old, hardened material from mixing into the new slurry and causing defects, but also ensures the consistency of the effective volume and component concentration of each batch of slurry in the mixing chamber, thus ensuring the process stability of continuous production.

[0018] 3. The support components employ a linkage mechanism of lead screw drive and arc-shaped block guide, achieving smooth lifting and automatic positioning of the mold box. Combined with the exhaust duct connected to the vacuum pump, a negative pressure environment is created inside the mold box. This combination of negative pressure suction and mechanical positioning forces the slurry to overcome surface tension and enter the undercut and blind end areas of the mold, completely solving the problems of surface holes and material shortages caused by air resistance in complex-shaped figurines, significantly improving the finished product qualification rate.

[0019] 4. The feeding assembly achieves physical interception of raw material flow by the cooperation of the sealing blade and the limiting ring. Combined with the precise control of the servo motor, it not only ensures the orderly input of multi-component raw materials, but also completes pre-mixing in the early stage of feeding, thereby improving the efficiency of subsequent stirring.

[0020] 5. When maintenance and cleaning of the mixing chamber are required, simply unscrew the fixing screws between the connecting flange and the feed pipe, rotate the connecting flange to move the limiting protrusion from the inside of the annular groove to one side of the vertical through hole, and the connecting pipe can be pulled out to disassemble the device, greatly reducing equipment downtime and maintenance costs. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention. Figure 2 This is a two-dimensional structural diagram of the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention, taken from a second perspective. Figure 3 This is an exploded view of the feed box and mixing box in the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention; Figure 4This is a three-dimensional structural diagram of the feed box and scraper in the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention. Figure 5 This is an exploded view of the rotating and fixed circular plates in the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention. Figure 6 This is a three-dimensional cross-sectional view of the support base in the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention. Figure 7 This is a three-dimensional structural diagram of the support base in the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention. Figure 8 This is an exploded view of the arc-shaped block and the sliding transverse plate in the quick-drying high-strength gypsum slurry for gypsum dolls and its preparation equipment proposed in this invention.

[0022] In the diagram: 1. Frame; 2. Support base; 3. Mold box; 4. Waste collection box; 5. Connecting conduit; 6. Mixing box; 7. Feeding box; 8. Cover plate; 9. Protective cover I; 10. Servo motor I; 11. Hook; 12. Tenon joint; 13. Annular groove; 14. Vertical through hole; 15. Rectangular positioning protrusion; 16. Sealing blade; 17. Fixed rectangular plate; 18. Fixed circular plate; 19. Scraper; 20. Connecting ring; 21. Mixing blade; 22. Mixing shaft; 23. Rotating circular plate; 24. Through hole I; 25. Rectangular positioning groove; 26. Through hole II; 27. Strip through hole; 28. Limiting ring I 29. Limiting ring II; 30. Protective cover II; 31. Servo motor II; 32. Feed guide; 33. Inclined groove; 34. Arc-shaped block; 35. Rectangular frame; 36. Exhaust duct; 37. Limiting protrusion; 38. Fixing ring; 39. Connecting flange; 40. T-shaped sliding groove; 41. Arc-shaped limiting groove; 42. Lead screw; 43. L-shaped support plate; 44. Side protrusion; 45. Rectangular notch; 46. Compression coil spring; 47. I-shaped plate; 48. Fixed support plate; 49. Strip groove; 50. Fixing protrusion; 51. Sliding transverse plate; 52. Fixing screw; 53. L-shaped mounting plate; 54. Threaded groove. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] In one embodiment: Refer to Figure 1-8The gypsum slurry is made from the following components by mass percentage: 30%-40% gypsum substrate, 20%-30% heavy calcium carbonate powder, 30%-40% volcanic ash, 0.5%-2% reinforcing fiber, 1%-8% latex powder, 0.5%-3.5% water-reducing agent, 0.1%-0.2% retarder, and 0.1%-0.2% defoamer. In actual production, each component can be precisely weighed within the above mass percentage range according to specific needs, such as the size of the gypsum doll, the requirements for strength and drying speed, etc., and then they are thoroughly mixed to obtain a quick-drying, high-strength gypsum slurry. The volcanic ash and heavy calcium carbonate powder fill the microscopic voids in the hardened gypsum substrate, ensuring that the slurry can flow smoothly into the fine texture of the mold without significantly increasing the amount of mixing water, and forming a dense solid structure after hardening.

[0025] To prepare this gypsum slurry, a preparation device is provided, comprising a frame 1 and a support base 2, with the frame 1 positioned above the support base 2. A mixing chamber 6 is fixedly mounted on the top of the frame 1, and a feed chamber 7 is fixedly mounted on the top of the mixing chamber 6. A connecting conduit 5 is fixedly mounted on the bottom of the mixing chamber 6. A feed conduit 32 is fixedly mounted on the top of the support base 2, and the feed conduit 32 and the connecting conduit 5 are connected by a connecting assembly. The connecting assembly includes an annular groove 13 formed on the outer wall of the connecting conduit 5, and two symmetrically arranged vertical through holes 14 formed on the bottom of the outer wall of the connecting conduit 5. The annular groove 13 communicates with the vertical through holes 14. A connecting flange 39 is rotatably mounted on the top of the feed conduit 32, and a fixing ring 38 is fixedly mounted on the top of the connecting flange 39. Limiting protrusions 37 are fixedly mounted on the inner walls of both sides of the fixing ring 38, and the limiting protrusions 37 cooperate with the annular groove 13 and the vertical through holes 14. When maintenance and cleaning of the mixing chamber 6 are required, the fixing screws between the connecting flange 39 and the feed pipe 32 can be unscrewed to release the braking state of the connecting flange 39. At this time, the connecting flange 39 is rotated, which drives the fixing ring 38 to rotate. The fixing ring 38 drives the limiting protrusion 37 to rotate, thereby causing the limiting protrusion 37 to move from the inside of the annular groove 13 to one side of the vertical through hole 14. At this time, the connecting pipe 5 can be pulled out to disassemble the device.

[0026] A rectangular frame 35 is fixedly connected to the top inner wall of the support base 2. An inclined groove 33 is formed inside the rectangular frame 35, and the inclined groove 33 communicates with the feed conduit 32. The feed box 7 contains a feed assembly for feeding raw materials. The feed assembly includes a fixed circular plate 18 fixedly installed inside the feed box 7. A fixed rectangular plate 17 is fixedly installed on the top of the fixed circular plate 18. Multiple limiting rings I 28 are fixedly installed inside the fixed rectangular plate 17. Multiple strip-shaped through holes 27 are formed inside the fixed rectangular plate 17. Multiple through holes II 26 are formed inside the fixed circular plate 18. The system also includes a cover plate 8. A servo motor I 10 is mounted on the top of the cover plate 8. The output shaft of the servo motor I 10 rotates through the cover plate 8 and is fixedly mounted with a rectangular positioning protrusion 15. A protective cover I 9 is fixedly installed on the top of the cover plate 8 to protect the servo motor I 10. Multiple limiting rings I 28 rotate through a stirring shaft 22. A rectangular positioning groove 25 is provided at the top of the stirring shaft 22, engaging with a rectangular positioning protrusion 15. Multiple limiting rings II 29 are fixedly fitted onto the outer wall of the stirring shaft 22. Sealing blades 16 are fixedly installed on both sides of each limiting ring II 29, cooperating with the strip-shaped through-hole 27. During use, the raw materials are positioned on both sides of the fixed rectangular plate 17. At this time, through-holes I 24 and II 26 are not connected, and the sealing blades 16 and limiting rings II 29 are located inside the strip-shaped through-hole 27, thus sealing it and completing the feeding process. After feeding is completed, the cover plate 8 can be fastened to the top of the feeding box 7. At this time, the cover plate 8 can be fastened to the top of the feeding box 7 by the hook 11 and the tenon buckle 12. At this time, the rectangular positioning protrusion 15 is engaged in the inside of the rectangular positioning groove 25. The servo motor I 10 can be started. The output shaft of the servo motor I 10 drives the rectangular positioning protrusion 15 to rotate. The rectangular positioning protrusion 15 drives the stirring shaft 22 to rotate. The stirring shaft 22 drives the limiting ring II 29 and the sealing blade body 16 to rotate. At this time, the sealing blade body 16 continuously rotates inside the strip-shaped through hole 27, which can initially mix the raw materials and water.

[0027] The mixing chamber 6 is equipped with a mixing assembly for mixing raw materials. This assembly includes a rotating circular plate 23 fixedly fitted onto the outer wall of the stirring shaft 22. The rotating circular plate 23 has multiple through holes I 24 inside, with through holes II 26 working in conjunction with them. Multiple stirring blades 21 are fixedly connected to the outer wall of the stirring shaft 22, and connecting rings 20 are fixedly connected to the outer walls of the stirring blades 21. Multiple scraper plates 19 are fixedly connected between two connecting rings 20. As the stirring shaft 22 rotates, it drives the stirring blades 21 to rotate, which in turn drives the connecting rings 20 to rotate. The connecting rings 20 then drive the scraper plates 19 to rotate. At this time, the two scraper plates 19 continuously scrape away any residue inside, preventing adhesion, and the multiple stirring blades 21 can achieve a re-mixing process. Furthermore, the stirring shaft 22 drives the rotating circular plate 23 to rotate. When the rotating circular plate 23 rotates, the through hole I 24 is continuously connected to the through hole II 26, and the material is continuously fed into the interior of the mixing box 6. The synergistic effect of volcanic ash and heavy calcium carbonate powder fills the micro-pores in the hardened gypsum substrate. Without significantly increasing the amount of mixing water, it ensures that the slurry can flow smoothly into the fine texture of the mold and form a dense solid structure after hardening.

[0028] The mold housing 3 has an internal cavity. The mold housing 3 is located inside the support base 2 and cooperates with the inclined groove 33. The support base 2 contains a support assembly for supporting the mold housing 3. The support assembly includes a sliding transverse plate 51 slidably connected inside the support base 2. A lead screw 42 passes through the internal thread of the sliding transverse plate 51. A servo motor II 31 is fixedly mounted on the top of the support base 2. The output shaft of the servo motor II 31 rotates through the support base 2 and is fixedly connected to the top of the lead screw 42. A protective cover II 30 is fixedly mounted on the top of the support base 2 to protect the servo motor II 31. Two L-shaped mounting plates 53 are fixedly connected to one side of the sliding transverse plate 51. The two L-shaped mounting plates 53 are located at opposite ends of the sliding transverse plate 51. Fixing screws 52 pass through the internal threads of the L-shaped mounting plates 53. Multiple threaded grooves 54 are formed on one side of the support base 2, and the fixing screws 52 cooperate with the threaded grooves 54. The sliding horizontal plate 51 has strip-shaped grooves 49 on both sides of its bottom. A fixed protrusion 50 is slidably connected inside the strip-shaped groove 49. An arc-shaped block 34 is fixedly installed at the bottom of the fixed protrusion 50. An L-shaped support plate 43 is fixedly installed on one side of the top of the arc-shaped block 34. Two symmetrically arranged side protrusions 44 are fixedly installed on the top of the L-shaped support plate 43. The side protrusions 44 and the L-shaped support plate 43 are used to limit the position of the mold box 3. T-shaped sliding grooves 40 are formed on both sides of the inner wall of the support base 2. Arc-shaped limiting grooves 41 are formed on both sides of the inner wall of the support base 2. The bottom of the arc-shaped limiting groove 41 is connected to the T-shaped sliding groove 40. The bottom of the arc-shaped limiting groove 41 is arc-shaped. A waste collection box 4 is fixedly installed on the bottom inner wall of the support base 2. A rectangular notch 45 is provided on one side of the arc-shaped block 34. An I-shaped plate 47 is slidably connected inside the rectangular notch 45. A compression coil spring 46 is fixedly installed between one end of the I-shaped plate 47 and the inner wall of one side of the rectangular notch 45. A fixed support plate 48 is fixedly installed on the inner wall of the support base 2. The fixed support plate 48 is used to support the arc-shaped block 34. The I-shaped plate 47 is used in conjunction with the arc-shaped limiting groove 41. When making the doll, the mold box 3 can be placed on top of two L-shaped support plates 43. Since the two exhaust pipes 36 are located on one side of the T-shaped sliding groove 40, the I-shaped plate 47 moves laterally under the action of the compression spiral spring 46, and the I-shaped plate 47 moves out from the inside of the arc-shaped limiting groove 41. The two arc-shaped blocks 34 are supported by the fixed support plate 48 and will not fall. The two arc-shaped blocks 34 can move away from each other at the lowest point, which makes it convenient to send the mold box 3 in. After being sent in, the mold box 3 is abutted by the side protrusions 44 around its perimeter, ensuring the stability of the mold box 3.At this time, servo motor II 31 is started. The output shaft of servo motor II 31 drives the lead screw 42 to rotate. The lead screw 42 drives the sliding transverse plate 51 to move upward. Since the bottom of the arc-shaped limiting groove 41 is connected to the T-shaped sliding groove 40 and is arc-shaped, the sliding transverse plate 51 drives the two arc-shaped blocks 34 to move upward. The arc-shaped blocks 34 drive the I-shaped plate 47 to move upward. Along the arc surface of the arc-shaped limiting groove 41, the I-shaped plate 47 gradually enters the interior of the rectangular notch 45 and continuously squeezes and compresses the spiral spring 46 until the sliding transverse plate 51 moves upward and drives the mold box 3 to move below the rectangular frame 35. At this time, the inclined groove 33 is connected to the mold box 3. The L-shaped mounting plate 53 can be tightened on one side of the corresponding threaded groove 54 using the fixing screw 52 to ensure the stability of the sliding transverse plate 51.

[0029] The above-mentioned formula and preparation equipment for quick-drying high-strength gypsum slurry enable a scientific and rational proportioning of each component, fully leveraging the advantages of each ingredient and effectively improving the quick-drying and high-strength properties of the gypsum slurry. The preparation equipment achieves precise proportioning and thorough mixing of raw materials, solving the problems of inaccurate feeding and uneven mixing found in traditional equipment. It also facilitates mold installation and slurry discharge, ensuring the molding quality of gypsum figurines and reducing slurry residue and surface defects.

[0030] This application can be used in the field of plaster figurine making, or in other fields applicable to this application.

[0031] In another embodiment: Reference Figure 1-8 This invention relates to a quick-drying, high-strength plaster slurry and its preparation equipment for plaster figurines. Its application in the plaster figurine making field differs from the aforementioned implementation in that: a connected exhaust duct 36 is fixedly connected to the top side of the support base 2; multiple tenon joints 12 are fixedly installed on the outer wall of the feed box 7; and multiple hooks 11 are fixedly installed on the outer wall of the cover plate 8, with the hooks 11 engaging with the tenon joints 12. A vacuum pump is then connected to the exhaust duct 36, thereby extracting the air from inside the mold box 3. By opening the valve on the connecting duct 5, the slurry inside is discharged. Because the mold box 3 is under negative pressure, the slurry can be sucked out, preventing residue. The mold box 3 has a doll-shaped cavity inside, enabling the preparation of dolls and preventing holes.

[0032] However, as is well known to those skilled in the art, the working principles and wiring methods of servo motor II31 and servo motor I10 are conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quick-drying, high-strength gypsum slurry for use in plaster figurines, characterized in that, Made from components comprising the following percentages by weight: Gypsum substrate: 30%-40%; Heavy calcium carbonate powder: 20%-30%; Volcanic ash: 30%-40%; Reinforcing fiber: 0.5%-2%; Latex powder: 1%-8%; Water-reducing agent: 0.5%-3.5%; Retarder: 0.1%-0.2%; Defoamer: 0.1%-0.2%.

2. A preparation apparatus, used for the quick-drying high-strength gypsum slurry for plaster figurines as described in claim 1, characterized in that, include: A frame (1) and a support base (2), the frame (1) being located above the support base (2); a mixing chamber (6), fixedly connected to the top of the frame (1); a feed chamber (7), fixedly connected to the top of the mixing chamber (6) and communicating with the mixing chamber (6); a connecting conduit (5), fixedly connected to the bottom of the mixing chamber (6) and communicating with the mixing chamber (6); a feed conduit (32), fixedly connected to the top of the support base (2) and connected to the connecting conduit (5) via a connecting assembly; a rectangular frame (35), fixedly connected to the top inner wall of the support base (2), the rectangular frame... The frame (35) has an inclined groove (33) inside, which is connected to the feed conduit (32); the feed assembly is set inside the feed box (7) and is used to control the feeding and initial mixing of raw materials; the mixing assembly is set inside the mixing box (6) and is used to fully mix the raw materials; the mold box (3) is set inside the support base (2) and is used in conjunction with the inclined groove (33), and the mold box (3) has a cavity inside for molding plaster dolls; the support assembly is set inside the support base (2) and is used to support and adjust the position of the mold box (3).

3. The preparation apparatus according to claim 2, characterized in that, The connection component includes: An annular groove (13) is formed on the outer wall of the connecting conduit (5); two vertical through holes (14) are symmetrically formed on the bottom of the outer wall of the connecting conduit (5) and connected to the annular groove (13); a connecting flange (39) is rotatably installed on the top of the feed conduit (32); a fixing ring (38) is fixedly connected to the top of the connecting flange (39); and two limiting protrusions (37) are fixedly connected to the inner walls on both sides of the fixing ring (38).

4. The preparation apparatus according to claim 2, characterized in that, The feeding assembly includes: A fixed circular plate (18) is fixedly connected to the inside of the feed box (7); a fixed rectangular plate (17) is fixedly connected to the top of the fixed circular plate (18), the fixed rectangular plate (17) has multiple strip-shaped through holes (27) inside, and the fixed circular plate (18) has multiple through holes II (26) inside; multiple limiting rings I (28) are fixedly connected to the inside of the fixed rectangular plate (17); a cover plate (8) is connected to the top of the feed box (7) by hooks (11) and tenon fasteners (12); servo A motor I (10) is installed on the top of the cover plate (8). The output shaft of the servo motor I (10) rotates through the cover plate (8) and is fixedly connected to a rectangular positioning protrusion (15). A stirring shaft (22) rotates through multiple limiting rings I (28). A rectangular positioning groove (25) is opened on the top of the stirring shaft (22) to engage with the rectangular positioning protrusion (15). Multiple limiting rings II (29) are fixedly sleeved on the outer wall of the stirring shaft (22). Multiple sealing blades (16) are fixedly connected to both sides of the limiting rings II (29).

5. The preparation apparatus according to claim 4, characterized in that, The hybrid component includes: A rotating circular plate (23) is fixedly fitted onto the outer wall of the stirring shaft (22). The rotating circular plate (23) has multiple through holes I (24) inside. Multiple stirring blades (21) are fixedly connected to the outer wall of the stirring shaft (22). Multiple connecting rings (20) are fixedly connected to the outer wall of the stirring blades (21). Multiple scraper plates (19) are fixedly connected between two connecting rings (20).

6. The preparation apparatus according to claim 5, characterized in that, The support components include: A sliding transverse plate (51) is slidably connected to the inside of the support base (2); a lead screw (42) is threaded through the inside of the sliding transverse plate (51); a servo motor II (31) is fixedly connected to the top of the support base (2), and the output shaft of the servo motor II (31) rotates through the support base (2) and is fixedly connected to the top of the lead screw (42); two L-shaped mounting plates (53) are fixedly connected to one side of the sliding transverse plate (51) and located at both ends of the sliding transverse plate (51); multiple fixing screws (52) are threaded through the inside of the L-shaped mounting plates (53); multiple threaded grooves (54) are opened on one side of the support base (2) and are used in conjunction with the fixing screws (52).

7. The preparation apparatus according to claim 6, characterized in that, The support components also include: Two strip-shaped grooves (49) are formed on both sides of the bottom of the sliding transverse plate (51); two fixed protrusions (50) are slidably connected to the inside of the strip-shaped grooves (49); two arc-shaped blocks (34) are fixedly connected to the bottom of the fixed protrusions (50); an L-shaped support plate (43) is fixedly connected to one side of the top of the arc-shaped block (34); and two side protrusions (44) are fixedly connected to the top of the L-shaped support plate (43).

8. The preparation apparatus according to claim 7, characterized in that: The inner walls of both sides of the support base (2) are provided with T-shaped sliding grooves (40) and arc-shaped limiting grooves (41). The bottom of the arc-shaped limiting grooves (41) is connected to the T-shaped sliding grooves (40) and is arc-shaped. A rectangular notch (45) is provided on one side of the arc-shaped block (34). An I-shaped plate (47) is slidably connected to the inside of the rectangular notch (45). A compression helical spring (46) is fixedly connected between one end of the I-shaped plate (47) and the inner wall of the rectangular notch (45). A fixed support plate (48) is fixedly connected to the inner wall of the support base (2).

9. The preparation apparatus according to claim 2, characterized in that, Also includes: The exhaust duct (36) is fixedly connected to the top side of the support base (2) and communicates with the cavity of the mold box (3). The exhaust duct (36) is connected to a vacuum pump to draw the inside of the mold box (3) into negative pressure.

10. The preparation apparatus according to claim 6, characterized in that, Also includes: Waste collection box (4) is fixedly connected to the bottom inner wall of the support base (2); protective cover I (9) is fixedly connected to the top of the cover plate (8) and protects the servo motor I (10); protective cover II (30) is fixedly connected to the top of the support base (2) and protects the servo motor II (31).

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