Device and method for preparing enamel blank

Abstract

The invention discloses a device and a method for preparing an enamel green body, and relates to the technical field of enamel green body preparation. A device for preparing an enamel blank comprises a machine box provided with two symmetrical feeding and discharging openings, an integrally-formed mounting plate is arranged in the machine box, the device further comprises two sets of outer forming modules symmetrically arranged in the machine box, and outer molds in the two sets of outer forming modules are combined to form a complete forming outer container; through reciprocating movement of the double placement plates of the clay conveyor, synchronous operation of feeding, processing and discharging is achieved, the standby time of a single station is eliminated, and the forming efficiency is improved; the positioning pin is matched with the polygonal positioning hole to ensure that the clay inserting hole is accurately aligned with the expansion bag, the weighing sensor detects the weight of clay in real time to remove unqualified raw materials, the pressure sensor monitors expansion pressure to guarantee quality, and the problem that the size precision and quality of a green body are unstable is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of enamel blank preparation, and specifically relates to a device for enamel blank preparation. Background Art

[0002] Enamel products are widely used in daily life and industrial fields due to their corrosion resistance, beauty and other characteristics. In the process of enamel blank preparation, blank forming is a key link, and its forming quality directly affects the final quality of enamel products.

[0003] At present, in the forming process of traditional enamel blank preparation devices, most use split molds to extrude and form clay, which has problems such as low forming efficiency, difficult to guarantee the dimensional accuracy of the blank, inconvenient mold cleaning and maintenance. At the same time, during the transportation and placement of clay, the amount of clay cannot be accurately controlled, which easily causes material waste and unstable blank quality. Therefore, there is an urgent need for an enamel blank preparation device that can improve forming efficiency and quality and is convenient for mold processing and maintenance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device for enamel blank preparation that can overcome the above problems or at least partially solve the above problems.

[0005] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A device for enamel blank preparation, including a chassis provided with two symmetric loading and unloading ports, and an integrally formed mounting plate is arranged inside the chassis. It further includes: two groups of outer forming modules symmetrically arranged inside the chassis, and the outer molds in the two groups of outer forming modules form a complete forming outer shell after being combined; an inner forming module arranged on the top of the chassis, and an expansion bladder that expands by extending into the inside of the forming outer shell is arranged on the inner forming module; a clay conveyor, fixedly installed inside the chassis, and two groups of symmetrically arranged placement plates are detachably installed on the clay conveyor. When the placement plate transports the clay with a jack in the center to the center position of the chassis, the two outer molds are combined to wrap the clay, and then the expansion bladder is inserted into the jack and expands; when one placement plate moves to the center of the chassis, the other placement plate moves to the loading and unloading port.

[0006] As a preferred embodiment of the present invention: the clay conveyor includes a guide rail fixedly installed on the top of the mounting plate and a first driving cylinder fixedly installed at the bottom of the mounting plate. A material placing rack is fixedly installed on the guide rail, and the two placement plates are respectively inserted at both ends of the material placing rack, and the output end of the first driving cylinder is fixedly connected with the material placing rack.

[0007] As a preferred embodiment of the present invention: polygonal positioning holes are provided at both ends of the material discharging rack, positioning pins matching the polygonal positioning holes are fixedly installed at the bottom of the placement plate, weighing sensors are provided at both ends of the material discharging rack, and the bottom of the placement plate is in contact with the weighing sensors.

[0008] As a preferred embodiment of the present invention: the two groups of outer forming modules each include a turntable rotatably connected to the top of the mounting plate, the two groups of turntables are symmetrically arranged on both sides of the clay conveyor, a mounting column is fixedly installed at the top center of the turntable, four groups of support plates arranged around the mounting column are fixedly installed on the top of the turntable, and the angle between two adjacent support plates is 90°, a second driving cylinder is fixedly installed on the mounting column and the support plate, a limiting rod is fixedly installed on the outer mold, the limiting rod is slidably connected to the support plate, the output end of the second driving cylinder is fixedly connected to the outer mold, and a driving part for driving the two groups of turntables to rotate is provided at the bottom of the mounting plate.

[0009] As a preferred embodiment of the present invention: two groups of external mold processing parts are fixedly installed on the top of the mounting plate, and the two groups of external mold processing parts are symmetrically arranged on both sides of the external molding module, and the two groups of external mold processing parts include three groups of second mounting cylinders fixedly installed on the mounting plate, when the second driving cylinder drives the external mold to move toward the outer ring of the mounting plate, the external mold and the second mounting cylinder are engaged with each other to form a sealed cylindrical cylinder; the second mounting cylinder is fixedly installed with a second feed pipe and a second discharge pipe, and the bottom of the mounting plate is fixedly installed with a fifth driving cylinder, and the output end of the fifth driving cylinder extends to the second mounting cylinder where a second wide-angle nozzle is fixedly installed, and the input end of the second wide-angle nozzle is connected to the second feed pipe; the three second wide-angle nozzles in the two groups of external mold processing parts include a high-pressure liquid nozzle, a high-pressure gas nozzle and a release agent nozzle.

[0010] As a preferred embodiment of the present invention: the driving part includes a reduction motor fixedly installed in the chassis, and a transmission shaft fixedly connected to the output end of the reduction motor is rotatably installed at the bottom of the mounting plate, and a rotating shaft is fixedly installed at the bottom of the two turntables, and the rotating shaft extends to the bottom of the mounting plate and is connected to the transmission shaft through a bevel gear set. When the reduction motor drives the two groups of turntables to rotate, the outer molds on the two groups of turntables circulate through the high-pressure liquid nozzle, the high-pressure gas nozzle, the release agent nozzle and the center of the mounting plate.

[0011] As a preferred embodiment of the present invention: the inner molding module includes a lift and an inner mold fixedly installed on the lift, the lift includes a mounting frame rotatably installed on the top of the chassis, the mounting frame is fixedly connected to the top of one of the mounting columns, the mounting frame is fixedly installed with four third drive cylinders distributed equidistantly in a circle, the output end of the third drive cylinder is fixedly installed with a slider, and the slider is slidably installed on the mounting frame.

[0012] As a preferred embodiment of the present invention: The inner mold includes four mounting tubes respectively fixedly installed on four sliders. A piston cylinder is fixedly installed inside the mounting tube. A piston plate is slidably installed inside the piston cylinder. The top of the mounting tube is fixedly installed with a fourth driving cylinder. The output end of the fourth driving cylinder extends into the piston cylinder and is fixedly connected to the piston plate. The output end of the piston cylinder is threadedly connected with a plugging head. The bottom of the plugging head is fixedly installed with an expansion bladder. The bottom of the piston cylinder is fixedly installed with a support tube. The support tube is inserted into the expansion bladder. An inner mold processing part is provided on the machine case.

[0013] As a preferred embodiment of the present invention: The inner mold processing part includes three first mounting cylinders fixedly installed on the top of the machine case. The included angle between two adjacent first mounting cylinders is 90°. A flow distribution ring and a first wide-angle nozzle fixedly installed on the flow distribution ring are fixedly installed inside each of the three first mounting cylinders. The three first wide-angle nozzles are a high-pressure liquid nozzle, a high-pressure gas nozzle, and a release agent nozzle respectively. A first feed pipe and a first discharge pipe are fixedly installed on the first mounting cylinder. The first feed pipe is fixedly connected to the flow distribution ring. A plugging slide plate is slidably installed on the piston cylinder. The top of the plugging slide plate is fixedly installed with a spring. The top of the spring is fixedly connected to the piston cylinder.

[0014] A usage method of a device for preparing enamel blanks includes the following steps: Step 1: Manually operate the driving part to stop the turntable at the 0° forming station, ensure that the outer mold is separated at the forming position, the expansion bladder of the inner mold is reset, and the blanking rack of the clay conveyor is in place. Step 2: Insert the placement plate carrying the clay into the blanking rack. The weighing sensor detects. If it is qualified, the first driving cylinder pushes the blanking rack to the center of the machine case. If it is unqualified, an alarm is given and it is re-detected after manual processing. Step 3: The blanking rack drives the qualified clay to the center of the machine case for processing. The blanking rack at the other end moves to the opposite loading and unloading port to prepare for loading. Step 4: The turntable remains at 0°. The second driving cylinder pushes the outer mold to close and wrap the outside of the clay. Step 5: The third driving cylinder at the forming position extends, and the expansion bladder is inserted into the center of the clay to form a closed space. The remaining expansion bladders are inserted into the first mounting cylinders. At the same time, the three groups of second wide-angle nozzles flush, dry, and spray release agent on the inner cavity of the outer mold. Step 6: The expansion bladder expands to form a blank. At the same time, the three groups of first wide-angle nozzles flush, dry, and spray release agent on the remaining expansion bladders. Step 7: The fourth driving cylinder withdraws the medium to make the expansion bladder retract. The third driving cylinder drives the expansion bladder to reset. The second driving cylinder drives the outer mold to reset. Step Eight: Repeat Steps Two to Seven to achieve continuous production.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the reciprocating movement of the double placement plates of the clay conveyor, the present invention realizes the synchronous operation of "loading - processing - unloading", eliminates the single - station standby time, and improves the forming efficiency; The use of the positioning pin and the polygonal positioning hole ensures the precise alignment of the clay insertion hole and the expansion bladder. The weighing sensor detects the weight of the clay in real - time to eliminate unqualified raw materials, and the pressure sensor monitors the expansion pressure to ensure the quality, solving the problems of unstable blank size accuracy and quality; The outer mold treatment part and the inner mold treatment part respectively perform fully automated maintenance of "cleaning - drying - spraying mold release agent" on the inner and outer molds. Moreover, the mold and the installation cylinder form a sealed space to avoid liquid splashing, and the waste liquid can be recycled, solving the problem of inconvenient mold cleaning and maintenance; The drive system drives the two turntables to rotate synchronously through a reduction motor, etc. The limit switch and the encoder ensure the alignment accuracy of the workstations, realizing the precise linkage of each module, improving the forming efficiency and quality as a whole, and facilitating the mold treatment and maintenance. Description of the Drawings

[0016] In the drawings: Figure 1 is a three - dimensional structural schematic diagram of a device for preparing enamel blanks proposed by the present invention; Figure 2 is a structural schematic diagram of the inner forming module and the outer mold treatment part of a device for preparing enamel blanks proposed by the present invention; Figure 3 is a structural schematic diagram of the drive part of a device for preparing enamel blanks proposed by the present invention; Figure 4 is a top - view of the clay conveyor of a device for preparing enamel blanks proposed by the present invention; Figure 5 is a three - dimensional structural schematic diagram of the clay conveyor of a device for preparing enamel blanks proposed by the present invention; Figure 6 is a structural schematic diagram of the outer mold of a device for preparing enamel blanks proposed by the present invention; Figure 7 is a cross - sectional view of the inner mold treatment part of a device for preparing enamel blanks proposed by the present invention; Figure 8 is a three - dimensional structural schematic diagram of the inner forming module of a device for preparing enamel blanks proposed by the present invention; Figure 9 is a device for preparing enamel blanks proposed by the present invention Figure 8 structural schematic diagram of the part at A in; Figure 10Schematic diagram of the structure of the fifth driving cylinder of a device for preparing enamel blanks proposed by the present invention; Figure 11 Process flow chart of a device for preparing enamel blanks proposed by the present invention.

[0017] In the figure: 1. Chassis; 11. Loading and unloading ports; 12. Mounting plate; 2. Clay conveyor; 21. Guide rail; 22. Feeding rack; 23. Polygonal positioning holes; 24. Weighing sensor; 25. Placing plate; 26. Positioning pin; 27. First driving cylinder; 3. Outer forming module; 31. Turntable; 311. Mounting column; 32. Support plate; 33. Limiting rod; 34. Second driving cylinder; 35. Outer mold; 4. Inner forming module; 41. Lift; 411. Mounting frame; 412. Slide block; 413. Third driving cylinder; 42. Inner mold; 421. Mounting pipe; 422. Piston cylinder; 423. Fourth driving cylinder; 424. Piston plate; 425. Spring; 426. Plugging slide plate; 427. Plugging head; 428. Expansion bladder; 5. Inner mold treatment part; 51. First mounting cylinder; 52. Shunt ring; 53. First wide-angle nozzle; 54. First feed pipe; 55. First discharge pipe; 6. Outer mold treatment part; 61. Second mounting cylinder; 62. Second feed pipe; 63. Second discharge pipe; 64. Fifth driving cylinder; 65. Second wide-angle nozzle; 7. Driving part; 71. Reduction motor; 72. Transmission shaft; 73. Rotating shaft; 74. Bevel gear set. Detailed implementation manners

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] Embodiment: Refer to Figures 1 - 11 , a device for preparing enamel blanks, including a chassis 1 provided with two symmetric loading and unloading ports 11. In actual production, two workers or two handling robots can be arranged to load and unload clay at the two loading and unloading ports 11.

[0020] The worker or robot places the pre-prepared clay with a jack in the center on the placing plate 25 to prepare for the subsequent blank preparation process.

[0021] Refer to Figure 1 and Figure 4, an integrally formed mounting plate 12 is provided inside the chassis 1. As the core mounting carrier, the mounting plate 12 is used to mount two sets of outer forming modules 3, an outer mold processing unit 6, a clay conveyor 2, and a driving unit 7 for driving the outer forming module 3 to rotate. In addition, an inner forming module 4 and an inner mold processing unit 5 are mounted on the top of the chassis 1. Each component is distributed in an orderly manner to jointly form a complete enamel blank preparation system.

[0022] Among them, the function of the outer mold processing unit 6 is to clean, dry, and spray a release agent on the outer mold 35 in the outer forming module 3 to ensure that the outer mold 35 is in the best state before each use; the inner mold processing unit 5 is used to clean, dry, and spray a release agent on the expansion bladder 428 in the inner forming module 4 to ensure the normal working performance of the inner mold 42 components.

[0023] Refer to Figure 4 , two sets of outer forming modules 3 are symmetrically arranged on both sides of the clay conveyor 2. The outer molds 35 in the two sets of outer forming modules 3 are combined to form a complete formed outer shell.

[0024] Refer to Figure 6 , an expansion bladder 428 that expands by extending into the interior of the formed outer shell is provided on the inner forming module 4. After the expansion bladder 428 extends into the insertion hole of the clay and expands, the outer shape of the expansion bladder 428 can be designed according to the shape of the inner hole of the blank after forming. After the expansion bladder 428 expands, it cooperates with the inner hole of the formed outer shell to extrude the clay into the required blank.

[0025] Refer to Figure 6 , two sets of symmetrically arranged placement plates 25 are detachably mounted on the clay conveyor 2. When one of the placement plates 25 moves to the center of the chassis 1, the other placement plate 25 moves to the loading and unloading port 11. The two sets of placement plates 25 move reciprocally to supplement the raw clay materials to be processed and output the formed blanks, realizing a continuous production process through station alternation.

[0026] Specifically: when one of the placement plates 25 moves to the loading and unloading port 11, the staff / robot can place new clay raw materials (with an insertion hole in the center) here to complete the loading operation; the other placement plate 25 synchronously moves to the center of the chassis 1 and is conveyed by the clay conveyor 2 to the middle of the two sets of outer forming modules 3 and below the inner forming module 4. After outer shell forming and extrusion forming by the expansion bladder 428, a blank is finally formed. When the processed blank is moved to the loading and unloading port 11 again by the placement plate 25, the staff / robot removes the formed blank to complete the unloading.

[0027] Refer to Figures 3 - 6, the clay conveyor 2 includes a guide rail 21 fixedly installed on the top of the mounting plate 12 and a first driving cylinder 27 fixedly installed on the bottom of the mounting plate 12. A blanking rack 22 is fixedly installed on the guide rail 21. Two placing plates 25 are respectively inserted at both ends of the blanking rack 22. The output end of the first driving cylinder 27 is fixedly connected to the blanking rack 22. Polygonal positioning holes 23 are provided at both ends of the blanking rack 22. A positioning pin 26 that fits with the polygonal positioning holes 23 is fixedly installed at the bottom of the placing plate 25. Weighing sensors 24 are provided at both ends of the blanking rack 22. The bottom of the placing plate 25 contacts the weighing sensors 24.

[0028] The placing plate 25 (empty plate) moves to the loading and unloading port 11. Workers or robots place the clay on the plate. The positioning pin 26 is inserted into the polygonal positioning hole 23 of the blanking rack 22 to complete the installation. The weight of the clay is detected by the weighing sensor 24. If it is qualified, the first driving cylinder 27 pushes the blanking rack 22 to move towards the center of the chassis 1. If it is unqualified, an external alarm is controlled to alarm.

[0029] The blanking rack 22 drives the placing plate 25 (carrying clay) to move to the processing position at the center of the chassis 1. At the same time, the placing plate 25 (carrying the formed blank) at the other end moves to the loading and unloading port 11. The outer forming module 3 and the inner forming module 4 extrude and form the clay to complete the preparation of the blank. After processing, the first driving cylinder 27 drives the blanking rack 22 in the reverse direction. The placing plate 25 (carrying the blank) moves to the loading and unloading port 11. Workers remove the blank and the placing plate 25 (carrying the blank), and replace it with a new placing plate 25 (carrying clay).

[0030] The clay conveyor 2 eliminates the "standby time" of single-station equipment by alternately loading, processing, and unloading at the front and rear workstations, thereby improving the preparation efficiency of the blank. The double loading and unloading ports 11 support synchronous operation by two people or full-automatic connection by robots, adapting to different production capacity requirements.

[0031] Through the cooperation of the polygonal positioning hole 23 and the positioning pin 26, the unique orientation of the placing plate 25 during installation is ensured, avoiding the misalignment of the clay insertion hole and the expansion bladder 428 due to incorrect direction. With the real-time weight detection and alarm function, raw materials with unqualified weight are eliminated from the source, reducing the losses in subsequent processes.

[0032] Refer to Figures 1 - 6 and Figure 10, both groups of outer forming modules 3 include turntables 31 rotatably connected to the top of the mounting plate 12. The two turntables 31 are symmetrically arranged on both sides of the clay conveyor 2 (one group on each side, left and right). A mounting post 311 is fixedly installed at the center of the top of the turntable 31. Four support plates 32 arranged around the mounting post 311 are fixedly installed on the top of the turntable 31. The included angle between two adjacent support plates 32 is 90° (the four support plates 32 are evenly distributed in a circle). A second driving cylinder 34 is fixedly installed on the mounting post 311 and the support plate 32. A limiting rod 33 is fixedly installed on the outer mold 35. The limiting rod 33 is slidably connected to the support plate 32. The output end of the second driving cylinder 34 is fixedly connected to the outer mold 35. A driving part 7 for driving the two turntables 31 to rotate is arranged at the bottom of the mounting plate 12; Two outer mold processing parts 6 are fixedly installed on the top of the mounting plate 12. The two outer mold processing parts 6 are symmetrically arranged on both sides of the outer forming module 3. The two outer mold processing parts 6 are symmetrically distributed outside the left and right turntables 31. Each group contains three second mounting cylinders 61 (corresponding to three processes of cleaning, drying, and spraying), arranged at 90° intervals, corresponding to the working positions of the turntable 31 one by one. When the second driving cylinder 34 drives the outer mold 35 to move towards the outer ring of the mounting plate 12, the outer mold 35 is engaged with the second mounting cylinder 61 to form a sealed cylindrical tube; A second feed pipe 62 and a second discharge pipe 63 are fixedly installed on the second mounting cylinder 61. A fifth driving cylinder 64 is fixedly installed at the bottom of the mounting plate 12. The output end of the fifth driving cylinder 64 extends into the second mounting cylinder 61 and is fixedly installed with a second wide-angle spray head 65. The input end of the second wide-angle spray head 65 is connected to the second feed pipe 62; The three second wide-angle spray heads 65 in the two outer mold processing parts 6 all include a high-pressure liquid spray head, a high-pressure gas spray head, and a mold release agent spray head.

[0033] The turntable 31 stops at the 0° position. The left outer mold 35 and the right outer mold 35 move towards the center through the second driving cylinder 34 and are combined into a complete formed outer bladder; The expansion bladder 428 of the inner forming module 4 extends into the clay jack, inflates and expands (or expands by filling hydraulic oil) and cooperates with the outer bladder to be extruded into shape, and the forming completion signal is fed back to the control system.

[0034] Then control the second driving cylinder 34 to drive the outer mold 35 to retract to a position close to the mounting post 311 (to avoid interference with the clay conveyor 2 during rotation); The driving part 7 is started to drive the turntable 31 to rotate clockwise by 90°, and the outer mold 35 is rotated from the forming station (0°) to the cleaning station (90°); During the rotation process, the outer mold 35 remains in a contracted state, and the limiting rod 33 slides and resets along the chute of the support plate 32. After the turntable 31 stops steadily, the second driving cylinder 34 drives the outer mold 35 to move outward again until the limiting rod 33 is engaged with the second mounting cylinder 61 to form a sealed cylindrical tube, and then the fifth driving cylinder 64 pushes the second wide-angle spray head 65 to reciprocate up and down in the sealed tube to process the outer mold 35: A high-pressure liquid nozzle (such as a water-based cleaning agent with a pressure of 20 MPa) is started to spray and clean the inner surface of the mold, and the waste liquid is discharged through the second discharge pipe 63 to the sewage treatment system; After cleaning, the turntable 31 rotates 90° again, and the outer mold 35 enters the drying station and engages with the corresponding second mounting cylinder 61; A high-pressure gas nozzle (such as 0.6 MPa compressed air) sprays high-pressure and high-speed drying gas to dry the residual moisture on the mold surface, and the moisture carried by the gas is discharged through the second discharge pipe 63; After drying, the turntable 31 rotates to the 270° position, the outer mold 35 is engaged with the second mounting cylinder 61 corresponding to the release agent nozzle, and then the release agent nozzle (such as an atomizing nozzle) sprays the release agent, which is transported to the nozzle through the second feeding pipe 62 and evenly sprayed on the mold surface to form a thin film. The excess release agent is recovered through the discharge pipe to avoid waste. After lamination, the turntable 31 rotates the last 90°, the outer mold 35 returns to the molding station, and the second drive cylinder 34 drives the outer mold 35 to retract to the initial position, waiting for the opposite mold to close.

[0035] In addition, the system synchronously triggers the right turntable 31 to perform symmetrical actions to ensure that the processing flow of the left and right molds is consistent.

[0036] In summary, after the outer mold 35 and the second mounting cylinder 61 are combined, mechanical locking is achieved through the thrust of the second driving cylinder 34 to form a sealed space. The sealing design prevents the cleaning liquid / release agent from splashing.

[0037] In actual use, when the turntable 31 rotates, the second drive cylinder 34 must be in a retracted state (detected by the limit switch) to prevent the mold from colliding with the installation cylinder or the clay conveyor 2; after the turntable 31 stops (the angle is confirmed by the encoder), the second drive cylinder 34 can be activated to ensure the alignment accuracy of the workstation.

[0038] The above-mentioned external molding module 3 and external mold processing unit 6 realize the full process automation cycle of molding-cleaning-drying-spraying. Each mold completes all maintenance processes within one rotation, forming efficient synergy with the internal molding module 4 and the clay conveyor 2.

[0039] Reference Figure 3 The driving part 7 includes a reduction motor 71 fixedly installed in the chassis 1, and a transmission shaft 72 fixedly connected to the output end of the reduction motor 71 is rotatably installed at the bottom of the mounting plate 12. A rotating shaft 73 is fixedly installed at the bottom of the two turntables 31. The rotating shaft 73 extends to the bottom of the mounting plate 12 and is connected to the transmission shaft 72 through a bevel gear set 74. When the reduction motor 71 drives the two groups of turntables 31 to rotate, the outer molds 35 on the two groups of turntables 31 circulate through the high-pressure liquid nozzle, the high-pressure gas nozzle, the release agent nozzle and the center of the mounting plate 12.

[0040] The two groups of turntables 31 are driven by the same transmission shaft 72. The bevel gear set 74 ensures that the rotation speeds of the turntables 31 on both sides are the same and the rotation directions are consistent (both clockwise or counterclockwise). When the left turntable 31 rotates to the cleaning station (90°), the right turntable 31 synchronously rotates to the symmetric station (such as the right cleaning station), ensuring that the processing flows of the left and right molds are completely synchronized and avoiding the dislocation of the outer mold 35 and the second installation cylinder 61 caused by speed differences.

[0041] The driving part 7 drives the turntable 31 to rotate 90° each time (corresponding to the four-station switching), and precise positioning is achieved by the pulse control of the reduction motor 71 or the encoder feedback.

[0042] Refer to Figure 1 、 Figure 5 、 Figures 7 - 9 As shown in FIGS. 1, 2, and 3, the inner forming module 4 includes a lifter 41 and an inner mold 42 fixedly installed on the lifter 41. The lifter 41 includes a mounting frame 411 rotatably installed on the top of the chassis 1. The mounting frame 411 is fixedly connected to the top of one of the mounting columns 311. Four third driving cylinders 413 are fixedly installed on the mounting frame 411 at equal circumferential intervals. The output end of the third driving cylinder 413 is fixedly installed with a slider 412, and the slider 412 is slidably installed on the mounting frame 411; The inner mold 42 includes four mounting tubes 421 respectively fixedly installed on the four sliders 412. A piston cylinder 422 is fixedly installed in the mounting tube 421. A piston plate 424 is slidably installed in the piston cylinder 422. The top of the mounting tube 421 is fixedly installed with a fourth driving cylinder 423, and the output end of the fourth driving cylinder 423 extends into the piston cylinder 422 and is fixedly connected to the piston plate 424; The output end of the piston cylinder 422 is threadedly connected with a plugging head 427. The bottom of the plugging head 427 is fixedly installed with an expansion bladder 428. The bottom of the piston cylinder 422 is fixedly installed with a support tube, and the support tube is inserted into the expansion bladder 428. An inner mold processing part 5 is arranged on the chassis 1; The inner mold processing part 5 includes three first installation cylinders 51 fixedly installed on the top of the chassis 1. The angle between two adjacent first installation cylinders 51 is 90°. A flow dividing ring 52 and a first wide-angle nozzle 53 fixedly installed on the flow dividing ring 52 are fixedly installed in each of the three first installation cylinders 51. The three first wide-angle nozzles 53 are a high-pressure liquid nozzle, a high-pressure gas nozzle, and a mold release agent nozzle respectively; A first feed pipe 54 and a first discharge pipe 55 are fixedly installed on the first installation cylinder 51. The first feed pipe 54 is fixedly connected to the flow dividing ring 52. A plugging slide plate 426 is slidably installed on the piston cylinder 422. A spring 425 is fixedly installed on the top of the plugging slide plate 426, and the top of the spring 425 is fixedly connected to the piston cylinder 422.

[0043] When in use, the third driving cylinder 413 can drive the slider 412 to move up and down along the mounting frame 411. When in use, the fourth driving cylinder 423 drives the piston plate 424 to rise or fall. During this process, the medium (gas or hydraulic oil) in the piston cylinder 422 is pressed into the expansion bag 428 to expand the expansion bag 428, or the medium in the expansion bag 428 is drawn back into the piston cylinder 422, thereby shrinking the expansion bag 428.

[0044] While the turntable 31 rotates, the mounting column 311 drives the mounting frame 411 to rotate. Before the mounting frame 411 starts to rotate, the third driving cylinder 413 drives all the sliders 412 to slide upward to the initial position to prevent collision with the first mounting cylinder 51, the outer mold 35 and the blank.

[0045] When the turntable 31 stops rotating, the third driving cylinder 413 above the molding position drives the support tube and the expansion bag 428 to be inserted into the notch in the center of the clay until the plugging head 427, the outer mold 35 and the placement plate 25 (carrying clay) are combined to form a sealed space, and then the expansion bag 428 is expanded.

[0046] During the descent of the expansion bladder 428 and the support tube, the remaining three groups of expansion bladders 428 are inserted into the first mounting tube 51 under the drive of the third driving cylinder 413, and then the three groups of expansion bladders 428 in the first mounting tube 51 are driven to move up and down. During this process, the three groups of first wide-angle nozzles 53 respectively spray cleaning liquid, dry airflow and release agent to the three groups of expansion bladders 428. During the treatment of the expansion bladder 428, the sealing slide plate 426 is tightly in contact with the top of the first mounting tube 51 under the action of the spring 425 to achieve sealing.

[0047] The specific workflow is as follows: The turntable 31 stops at the 0° molding position, the mounting frame 411 is positioned synchronously with the mounting column 311, and among the four groups of expansion bags 428 of the inner mold 42, one group is aligned with the center of the chassis 1 (molding position), and the remaining three groups correspond to the three first mounting cylinders 51 of the inner mold processing part 5 (cleaning, drying, and spraying positions).

[0048] All sliders 412 are in the initial position (the third driving cylinder 413 is retracted to the highest position), the expansion bag 428 is away from the outer mold 35 and the clay conveyor 2 to avoid rotation interference, and the two sets of outer molds 35 are separated at the molding position, waiting to be closed after the clay is transported to the center.

[0049] Driven by the first driving cylinder 27, the loading rack 22 transports the placing plate 25 carrying the clay to the center of the chassis 1, located between the two groups of outer molds 35. After the two outer molds 35 on both sides of the forming position are combined, the third driving cylinder 413 corresponding to the forming position extends, driving the slider 412 to descend along the mounting frame 411. The expansion bladder 428 is inserted into the central jack of the clay along with the support pipe until the sealing head 427 fits and seals against the top surface of the outer mold 35 and the upper surface of the placing plate 25, forming a closed space.

[0050] The fourth driving cylinder 423 acts to drive downward movement, pressing the medium (gas or hydraulic oil) inside the piston cylinder 422 into the expansion bladder 428. The expansion bladder 428 cooperates with the inner hole of the outer mold 35 to extrude the clay, forming the inner and outer contours of the green body.

[0051] During the extrusion molding process, the pressure inside the piston cylinder 422 can be monitored in real time through a pressure sensor. If the pressure is abnormal (too high), the pressure relief protection is automatically triggered to prevent the expansion bladder 428 from bursting.

[0052] After the clay is extruded into a green body, the fourth driving cylinder 423 acts in the reverse direction to drive the piston plate 424 to rise, withdrawing the medium inside the expansion bladder 428 and causing it to deflate and retract to its initial state. Then the third driving cylinder 413 retracts, and the sliders 412 at all stations drive the expansion bladder 428 to rise to a safe height (initial position) to avoid collision.

[0053] The reduction motor 71 drives the turntable 31 to rotate 90° through the transmission shaft 72 and the bevel gear set 74, and the mounting frame 411 rotates synchronously with the mounting column 311.

[0054] The inner mold 42 at the original forming position rotates to the cleaning station (corresponding to the first first mounting cylinder 51), and the inner mold 42 at the original cleaning station rotates to the drying station, and so on, forming a station cycle.

[0055] Before rotation, all sliders 412 must be in the initial position (confirmed by the limit switch), otherwise the turntable 31 is prohibited from rotating.

[0056] For the cleaning treatment of the inner mold 42 (taking the cleaning station as an example), the slider 412 descends to the cleaning station. The third driving cylinder 413 at the cleaning station extends, driving the expansion bladder 428 to insert into the first mounting cylinder 51 until the sealing slide plate 426 contacts the top of the cylinder in a sealed manner under the action of the spring 425. The cleaning liquid (such as water-based cleaning agent) is sprayed from the high-pressure liquid nozzle through the first feed pipe 54 and the flow distribution ring 52 to perform a 360° flush on the outer surface of the expansion bladder 428. The sewage formed by the cleaning flows into the filtration system through the first drain pipe 55 for recycling or centralized treatment.

[0057] After the inner mold 42 rotates to the drying station, the slider 412 descends and the high-pressure gas nozzle is started to blow dry the remaining moisture.

[0058] After the inner mold 42 is transferred to the spraying station, the slide block 412 descends, and the release agent nozzle (atomizing spray) evenly applies the release agent, and the excess release agent is recovered through the discharge pipe.

[0059] The processed inner mold 42 is turned back to the 0° forming station to wait for the next piece of clay to be transported to the location.

[0060] In summary, the preparation device has the following advantages: 1. Double-station alternation and continuous production: The two sets of placement plates 25 of the clay conveyor 2 move back and forth to realize the synchronous operation of "loading-processing-unloading", eliminating the standby time of a single station and greatly improving the production capacity; the double loading and unloading ports 11 support manual or robot operation, adapt to different production capacity requirements, and form a continuous production process through the alternation of stations, which significantly improves the preparation efficiency.

[0061] 2. High-precision positioning and quality control: The placement plate 25 cooperates with the polygonal positioning hole 23 through the positioning pin 26 to ensure that the clay plug hole and the expansion bag 428 are accurately aligned to avoid molding deviation caused by wrong direction; the weighing sensor 24 detects the weight of the clay in real time, and alarms and removes it when it is unqualified, reducing the loss of subsequent processes from the source; the pressure sensor of the inner mold 42 monitors the expansion pressure in real time, and automatically relieves the pressure when it is abnormal, ensuring equipment safety and the stability of green body quality.

[0062] 3. Automated mold maintenance and full-process coordination: The outer mold processing unit 6 and the inner mold processing unit 5 perform fully automated maintenance of "cleaning-drying-spraying release agent" on the inner and outer molds 35 respectively. All maintenance processes are completed within one rotation of the mold, in parallel with the molding process, reducing manual intervention and improving production consistency; the outer mold 35 and the second mounting cylinder 61, the inner mold 42 and the first mounting cylinder 51 form a sealed space to avoid splashing of cleaning liquid and release agent, and the waste liquid and release agent can be recycled, which is environmentally friendly and efficient.

[0063] 4. Precise linkage and modular design of the drive system: The drive unit 7 drives the two sets of turntables 31 to rotate synchronously through the reduction motor 71, the transmission shaft 72 and the bevel gear set 74, ensuring that the rotation speed and direction of the left and right outer molds 35 are consistent, and the station switching accuracy is doubly guaranteed by the encoder and the limit switch; each module (external molding module 3, internal molding module 4, clay conveyor 2, etc.) is independently installed on the mounting plate 12, which is convenient for maintenance, upgrading or expansion, and improves the versatility and flexibility of the equipment.

[0064] 5. Multi-process parallelism and energy closed-loop optimization: When the blank is formed, the forming station operates synchronously with the cleaning, drying and spraying stations to form a "production-maintenance" multi-threaded mode and shorten the single cycle time; the outer mold 35 and the inner mold 42 are mechanically locked and sealed to ensure that there is no leakage during the maintenance process, while providing a reliable mold state for forming. The various components work together to achieve a dual improvement in efficient production capacity and stable quality.

[0065] A method for using a device for preparing enamel blanks, comprising the following steps: Step 1: Manually operate the driving part 7 to stop the turntable 31 at the 0° forming station; At this time, ensure that the outer mold 35 is separated at the forming position and wait for the clay to be fed; the expansion bag 428 of the inner mold 42 is in the initial position (the third driving cylinder 413 retracts, and the expansion bag 428 moves away from the center of the chassis 1); the discharge rack 22 of the clay conveyor 2 is located at the loading and unloading port 11, and the placement plate 25 (carrying the clay) is ready; Step 2: The staff or the handling robot inserts the placement plate 25 (carrying the clay) into the discharge rack 22 through the positioning pin 26 at any one of the loading and unloading ports 11, and uses the weighing sensor 24 to weigh and detect the weight of the clay: If it is qualified, the first driving cylinder 27 pushes the discharge rack 22 to move along the guide rail 21 towards the center of the chassis 1; If it is unqualified, the external alarm machine alarms, the abnormal clay is manually removed, and new clay and the placement plate 25 are replaced, and this weighing and detection step is repeated until it is qualified; Step 3: The discharge rack 22 drives the placement plate 25 carrying the qualified clay to move to the center of the chassis 1 (processing position), and at the same time, the end of the discharge rack 22 at the other end moves to the opposite loading and unloading port 11 for loading preparation; Step 4: The turntables 31 of the two groups of outer forming modules 3 remain at the 0° forming station, and the second driving cylinder 34 pushes the outer mold 35 towards the center to merge into a complete formed outer shell to wrap the outside of the clay; Step 5: The third driving cylinder 413 corresponding to the forming position extends, driving the slider 412 to descend along the mounting frame 411, and the expansion bag 428 is inserted into the center jack of the clay along with the support pipe until the plugging head 427 fits against the top surface of the outer mold 35 to form a closed space in cooperation with the placement plate 25. The other three expansion bags 428 are respectively inserted into the three first mounting cylinders 51, and at the same time, the three second wide-angle nozzles 65 respectively wash, dry, and spray the release agent on the inner cavities of the three groups of outer molds 35; Step 6: The expansion bag 428 expands to form a blank. While forming the blank, the three first wide-angle nozzles 53 respectively wash, dry, and spray the release agent on the other three expansion bags 428; Step 7: After the forming is completed, the fourth driving cylinder 423 acts in the reverse direction, the piston plate 424 rises to withdraw the medium, the expansion bag 428 is depressurized and retracts, and then the third driving cylinder 413 retracts, driving the expansion bag 428 to rise to the initial position to avoid collision. During the reset process of the expansion bag 428, the second driving cylinder 34 drives the outer mold 35 to reset; Step 8: Repeat Steps 2 to 7 to achieve continuous production.

[0066] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can still make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall fall within the scope of the present invention.

Claims

1. An apparatus for preparing an enamel blank, comprising a chassis (1) provided with two symmetric loading and unloading ports (11), and an integrally formed mounting plate (12) is arranged inside the chassis (1), characterized in that, Further comprising: Two sets of outer molding modules (3) symmetrically arranged inside the chassis (1), and the outer molds (35) in the two sets of outer molding modules (3) are combined to form a complete molded outer shell; An inner molding module (4) arranged on the top of the chassis (1), and an expansion bladder (428) that extends into the molded outer shell and expands is arranged on the inner molding module (4); A clay conveyor (2) fixedly installed inside the chassis (1), and two sets of symmetrically arranged placement plates (25) are detachably installed on the clay conveyor (2). After the placement plate (25) transports the clay with a jack in the center to the center position of the chassis (1), the two outer molds (35) are combined to wrap the clay, and then the expansion bladder (428) is inserted into the jack and expands; When one of the placement plates (25) moves to the center of the chassis (1), the other placement plate (25) moves to the loading and unloading port (11).

2. The device for preparing an enamel blank according to claim 1, characterized in that, The clay conveyor (2) includes a guide rail (21) fixedly installed on the top of the mounting plate (12) and a first driving cylinder (27) fixedly installed at the bottom of the mounting plate (12). A material placing rack (22) is fixedly installed on the guide rail (21), and the two placement plates (25) are respectively inserted at both ends of the material placing rack (22). The output end of the first driving cylinder (27) is fixedly connected to the material placing rack (22).

3. The device for preparing enamel blanks according to claim 2, characterized in that, Polygonal positioning holes (23) are arranged at both ends of the material placing rack (22), positioning pins (26) that coincide with the polygonal positioning holes (23) are fixedly installed at the bottom of the placement plate (25), weighing sensors (24) are arranged at both ends of the material placing rack (22), and the bottom of the placement plate (25) is in contact with the weighing sensors (24).

4. The device for preparing an enamel blank according to claim 1, characterized in that, Each of the two sets of outer molding modules (3) includes a turntable (31) rotatably connected to the top of the mounting plate (12). The two turntables (31) are symmetrically arranged on both sides of the clay conveyor (2). An installation column (311) is fixedly installed at the center of the top of the turntable (31). Four sets of support plates (32) arranged around the installation column (311) are fixedly installed on the top of the turntable (31). The included angle between two adjacent support plates (32) is 90°. A second driving cylinder (34) is fixedly installed on the installation column (311) and the support plate (32). A limiting rod (33) is fixedly installed on the outer mold (35), and the limiting rod (33) is slidably connected to the support plate (32). The output end of the second driving cylinder (34) is fixedly connected to the outer mold (35). A driving part (7) for driving the two turntables (31) to rotate is arranged at the bottom of the mounting plate (12).

5. The device for preparing an enamel blank according to claim 4, characterized in that, Two sets of outer mold treatment parts (6) are fixedly installed on the top of the mounting plate (12). The two sets of outer mold treatment parts (6) are symmetrically arranged on both sides of the outer molding module (3), and each of the two sets of outer mold treatment parts (6) includes three second installation cylinders (61) fixedly installed on the mounting plate (12). When the second driving cylinder (34) drives the outer mold (35) to move towards the outer circle of the mounting plate (12), the outer mold (35) is engaged with the second installation cylinder (61) to form a sealed cylindrical barrel; A second feed pipe (62) and a second discharge pipe (63) are fixedly mounted on the second mounting tube (61); a fifth drive cylinder (64) is fixedly mounted on the bottom of the mounting plate (12); an output end of the fifth drive cylinder (64) extends to the second mounting tube (61) where a second wide-angle nozzle (65) is fixedly mounted; an input end of the second wide-angle nozzle (65) is connected to the second feed pipe (62); The three second wide-angle nozzles (65) in the two groups of the outer mold processing parts (6) each include a high-pressure liquid nozzle, a high-pressure gas nozzle, and a mold release agent nozzle.

6. The device for preparing enamel blanks according to claim 5, characterized in that, The driving unit (7) comprises a reduction motor (71) fixedly mounted in the chassis (1); a transmission shaft (72) fixedly connected to the output end of the reduction motor (71) is rotatably mounted at the bottom of the mounting plate (12); a rotation shaft (73) is fixedly mounted at the bottom of the two rotating disks (31); the rotation shaft (73) extends to the bottom of the mounting plate (12) and is transmission-connected to the transmission shaft (72) via a bevel gear set (74); when the reduction motor (71) drives the two sets of rotating disks (31) to rotate, the outer molds (35) on the two sets of rotating disks (31) circulate through the high-pressure liquid nozzle, the high-pressure gas nozzle, the mold release agent nozzle and the center of the mounting plate (12).

7. The device for preparing an enamel blank according to claim 4, wherein The inner molding module (4) comprises an elevator (41) and an inner mold (42) fixedly mounted on the elevator (41); the elevator (41) comprises a mounting frame (411) rotatably mounted on the top of the chassis (1); the mounting frame (411) is fixedly connected to the top of one of the mounting columns (311); four third driving cylinders (413) are fixedly mounted on the mounting frame (411) and are equidistantly distributed around a circle; a slider (412) is fixedly mounted on the output end of the third driving cylinder (413); and the slider (412) is slidably mounted on the mounting frame (411).

8. The device for preparing enamel blanks according to claim 7, characterized in that, The inner mold (42) comprises four mounting tubes (421) respectively fixedly mounted on four sliders (412); a piston cylinder (422) is fixedly mounted in the mounting tubes (421); a piston plate (424) is slidably mounted in the piston cylinder (422); a fourth driving cylinder (423) is fixedly mounted on the top of the mounting tube (421); an output end of the fourth driving cylinder (423) extends into the piston cylinder (422) and is fixedly connected to the piston plate (424); The output end of the piston cylinder (422) is threadedly connected to a plugging head (427), an expansion bag (428) is fixedly mounted on the bottom of the plugging head (427), a support tube is fixedly mounted on the bottom of the piston cylinder (422), and the support tube is inserted into the expansion bag (428), and an inner mold processing portion (5) is provided on the chassis (1).

9. The device for preparing an enamel blank according to claim 8, wherein The inner mold processing unit (5) includes three first mounting cylinders (51) fixedly installed on the top of the chassis (1). The included angle between two adjacent first mounting cylinders (51) is 90°. A flow dividing ring (52) and a first wide-angle nozzle (53) fixedly installed on the flow dividing ring (52) are fixedly installed in each of the three first mounting cylinders (51). The three first wide-angle nozzles (53) are a high-pressure liquid nozzle, a high-pressure gas nozzle, and a demolding agent nozzle respectively; A first feed pipe (54) and a first discharge pipe (55) are fixedly installed on the first mounting cylinder (51). The first feed pipe (54) is fixedly connected to the flow dividing ring (52). A plugging slide plate (426) is slidably installed on the piston cylinder (422). A spring (425) is fixedly installed on the top of the plugging slide plate (426). The top of the spring (425) is fixedly connected to the piston cylinder (422).

10. A method for using a device for preparing enamel blanks, characterized in that, Using a device for preparing enamel blanks as described in claim 6, it includes the following steps: Step 1: Manually operate the driving part (7) to make the turntable (31) stop at the 0° forming station, ensure that the outer mold (35) is separated at the forming position, the expansion bladder (428) of the inner mold (42) is reset, and the loading rack (22) of the clay conveyor (2) is in place; Step 2: Insert the placement plate (25) carrying the clay into the loading rack (22). The weighing sensor (24) detects. If it is qualified, the first driving cylinder (27) pushes the loading rack (22) to the center of the chassis (1). If it is unqualified, an alarm is given and it is re-detected after manual processing; Step 3: The loading rack (22) drives the qualified clay to the center of the chassis (1) for processing, and the other loading rack (22) moves to the opposite loading and unloading port (11) to prepare for loading; Step 4: The turntable (31) remains at 0°, and the second driving cylinder (34) pushes the outer mold (35) to close and wrap the outside of the clay; Step 5: The third driving cylinder (413) at the forming position extends, and the expansion bladder (428) is inserted into the center of the clay to form a closed space; The remaining expansion bladders (428) are inserted into the first mounting cylinders (51). At the same time, the three groups of second wide-angle nozzles (65) flush, dry, and spray demolding agent on the inner cavity of the outer mold (35); Step 6: The expansion bladder (428) expands to form a blank. At the same time, the three groups of first wide-angle nozzles (53) flush, dry, and spray demolding agent on the remaining expansion bladders (428); Step 7: The fourth driving cylinder (423) withdraws the medium to make the expansion bladder (428) retract. The third driving cylinder (413) drives the expansion bladder (428) to reset, and the second driving cylinder (34) drives the outer mold (35) to reset; Step 8: Repeat steps 2 to 7 to achieve continuous production.

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