Three-station isostatic pressing forming machine

Abstract

The invention discloses a three-station isostatic pressing forming machine which comprises a rack, the rack is provided with a rotating disc, a driving motor used for driving the rotating disc to rotate and three discharging parts located at the top of the rotating disc and evenly wound with the rotating disc as the center, and the three discharging parts are each provided with a mold assembly. The isostatic pressing forming machine is characterized in that three discharging parts are arranged on the rotating disc, a hydraulic forming device, a demolding device and a feeding device are arranged at the positions, corresponding to the three discharging parts, of the upper portion of the rotating disc, and according to the isostatic pressing forming machine, the three discharging parts are arranged on the rotating disc, and the hydraulic forming device, the demolding device and the feeding device are arranged at the positions, corresponding to the three discharging parts, of the upper portion of the rotating disc; according to the hydraulic forming device, automatic material conveying and automatic demolding can be achieved, automatic demolding and automatic feeding work can be conducted on mold assemblies on other discharging parts at the same time when the mold assemblies enter the hydraulic forming device for forming work, the automation degree is high, the working efficiency is high, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of isostatic pressing machines, and particularly relates to a three-station isostatic pressing machine. Background Art

[0002] An isostatic pressing machine is mainly a machine used to press metal and non-metal powders into high-density rod materials, sheet materials, and other shaped materials. Existing isostatic pressing machines usually need to go through steps such as loading, vibration compaction, processing, and demolding.

[0003] The Chinese utility model patent with the publication number "CN214187648U" discloses an isostatic pressing device for preparing ceramic sleeves. It includes a frame. A high-pressure cylinder is fixedly arranged on the left side of the frame. A pressurizing chamber is arranged inside the high-pressure cylinder. A lifting plate with a connecting block is arranged below the high-pressure cylinder. A lower sealing seat is arranged on the upper side of the lifting plate. A mold can be placed on the upper side of the lower sealing seat. A main body box with a bottom plate is arranged on the right side of the frame. A lifting motor and a rotating rod are arranged on the left side of the bottom plate. The lifting motor can drive the rotating rod to rotate, and the lifting plate can be raised under the action of the rotating rod.

[0004] Although this isostatic pressing device has the advantages of automatic lifting of the mold into the hydraulic cylinder for work and convenient operation, since the above device still needs to rely on manual operation during the loading and demolding stages, the degree of automation is low and the efficiency is not high, and the structure of the isostatic pressing device still needs to be improved.

[0005] In view of this, the applicant has conducted in-depth research on the above problems, and thus this case has arisen. Summary of the Invention

[0006] The purpose of the present invention is to provide a three-station isostatic pressing machine with a high degree of automation and high manufacturing efficiency.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solution:

[0008] A three-station isostatic pressing forming machine, comprising a frame. On the frame, there is a turntable horizontally arranged and rotatably connected to the frame, a driving motor for driving the turntable to rotate, and three feeding parts evenly arranged around the turntable at the top of the turntable. Die assemblies are arranged on the three feeding parts. A feeding space is provided inside the die assemblies. Above the turntable, corresponding to the positions of the three feeding parts, there are a hydraulic forming device, a demoulding device, and a feeding device respectively. The rotation of the turntable drives the die assemblies to move successively between the feeding device, the hydraulic forming device, and the demoulding device. An opening for the die assembly to enter is provided at the bottom of the hydraulic forming device. The bottom of the die assembly is hermetically connected to the opening at the bottom of the hydraulic forming device. At the position corresponding to the hydraulic forming device at the bottom of the turntable, there is a lifting mechanism for feeding the die assembly into the hydraulic forming device. A control mechanism for controlling the coordinated linkage of the driving motor, the lifting mechanism, the feeding device, and the demoulding device is also provided on the frame;

[0009] The feeding device includes a feeding cover plate that can be lifted and arranged above the die assembly, and an automatic feeder arranged above the feeding cover plate. The bottom of the feeding cover plate is hermetically connected to the top of the die assembly. A feeding port communicating with the feeding space is opened in the middle of the feeding cover plate. The discharge port of the automatic feeder is hermetically connected to the feeding port of the feeding cover plate;

[0010] The demoulding device is used to take out the outer shell of the die assembly. The demoulding device includes a vertically arranged sliding component and a clamping component fixedly arranged on the sliding component for clamping the die assembly.

[0011] Furthermore, a capping mechanism for sealing the top of the die assembly is also provided on one side of the hydraulic forming device. The capping mechanism is arranged above the turntable and on the rotation path of the die assembly. A top cover for sealing the die assembly is provided at the bottom of the capping mechanism.

[0012] Furthermore, a detection mechanism for detecting whether the material in the die assembly is filled completely is also provided on one side of the hydraulic forming device. The detection mechanism is arranged above the turntable and on the rotation path of the die assembly.

[0013] Further, the hydroforming device includes a high-pressure inner cylinder and a load-bearing outer cylinder sleeved outside the high-pressure inner cylinder. The bottom of the high-pressure inner cylinder has a feeding port. The load-bearing outer cylinder is fixedly arranged above the frame. The feeding port of the high-pressure inner cylinder is higher than the bottom of the load-bearing outer cylinder. A long groove communicating with the feeding port is opened on the side wall of the load-bearing outer cylinder. The long groove is located at a position between the bottom of the load-bearing outer cylinder and the feeding port. When the mold assembly is located in the high-pressure inner cylinder, the bottom of the mold base is flush with the top of the long groove. A horizontally arranged channel is connected to the long groove. The other end of the channel is provided with a jacking cylinder. The output end of the jacking cylinder is arranged towards the direction of the channel. A block that can extend into the long groove is provided at the output end of the jacking cylinder. A jacking base is further arranged at the bottom of the hydroforming device. The jacking base is arranged between the mold assembly and the lifting mechanism. A retraction groove for the block to extend into is opened downward at the top of the jacking base. Notches for the jacking base to pass through are opened at positions corresponding to each of the material placing parts on the turntable.

[0014] Further, the lifting mechanism is a counterweight lifting mechanism. The counterweight lifting mechanism is arranged on the side of the jacking base away from the turntable. The bottom of the jacking base is fixedly connected to the counterweight lifting mechanism. A limiting block is arranged on the side of the counterweight lifting mechanism close to the jacking base. The limiting block is located at the bottom of the load-bearing outer cylinder. When the limiting block abuts against the bottom of the load-bearing outer cylinder, the mold assembly completely enters the high-pressure inner cylinder.

[0015] Further, a feeding sealing cover plate for sealing the top of the mold assembly is arranged at the bottom of the feeding cover plate corresponding to the position of the mold assembly. The feeding port penetrates through the feeding cover plate and the feeding sealing cover plate. A feeding hopper is further arranged on the top of the feeding cover plate. The outlet of the feeding hopper extends into the feeding port. A vacuum feeding machine is further arranged above the automatic feeding machine. The vacuum feeding machine is hermetically connected to the automatic feeding machine. The vacuum feeding machine has a suction pipe for sucking materials.

[0016] Further, an automatic compaction device for compacting the materials in the material placing space is arranged below the feeding device. The automatic compaction device is arranged at the bottom of the turntable. The automatic compaction device includes a vibrator housing and a vibrator arranged in the vibrator housing. A vertically arranged connecting cylinder is arranged at the top of the vibrator housing. The output end of the connecting cylinder is arranged upward.

[0017] Further, the mold assembly includes a mold base arranged on the turntable, an inner mold fixedly arranged on the mold base, and an outer mold sleeved outside the inner mold. A material placing space is formed between the outer mold and the inner mold.

[0018] Further, the sliding assembly includes a vertically arranged slide rail, a slide seat slidable on the slide rail, and a sliding cylinder disposed at the top of the slide rail for driving the slide seat to slide. The clamping assembly is fixedly arranged on the slide seat. The clamping assembly includes a double-acting cylinder horizontally arranged on the slide seat. Output ends on both sides of the double-acting cylinder are connected with clamping plates for clamping the outer mold. One end of the clamping plate away from the double-acting cylinder is arc-shaped.

[0019] Further, there are two sets of the clamping assemblies. Two slide seats are respectively arranged on the slide rail at positions corresponding to the two sets of the clamping assemblies. The distance between the two sets of the clamping assemblies is less than or equal to the height of the outer mold.

[0020] By adopting the foregoing design scheme, the beneficial effects of the present invention are as follows:

[0021] In the isostatic pressing forming machine of the present invention, by arranging three feeding parts on the turntable, and respectively arranging a hydraulic forming device, a demolding device and a feeding device above the turntable at positions corresponding to the three feeding parts, automatic feeding and automatic demolding can be realized. Moreover, when the mold assembly enters the hydraulic forming device, automatic demolding and automatic feeding operations can also be carried out on the mold assemblies on other feeding parts at the same time. The degree of automation is high and the working efficiency is high.

[0022] Further, the cooperation of the long groove opened on the load-bearing outer cylinder and the abutting cylinder on the side enables the mold assembly to be supported and fixed by the blocking block pushed out by the abutting cylinder after entering the hydraulic forming device, reducing the load of the counterweight lifting mechanism and improving the stability of the machine frame when the hydraulic forming device is working.

[0023] Further, a vacuum feeding machine, a detection mechanism, a capping mechanism and an automatic vibration compaction device are provided, further improving the degree of automation and reducing the labor intensity of the staff. Description of the Drawings

[0024] Figure 1 It is a three-dimensional schematic diagram of the mold assembly of the isostatic pressing forming machine of the present invention before entering the hydraulic forming device.

[0025] Figure 2 It is a three-dimensional schematic diagram of another perspective of the mold assembly of the isostatic pressing forming machine of the present invention after entering the hydraulic forming device.

[0026] Figure 3 It is a cross-sectional plan schematic diagram of the mold assembly of the isostatic pressing forming machine of the present invention before entering the hydraulic forming device.

[0027] Figure 4 It is a cross-sectional plan schematic diagram of the mold assembly of the isostatic pressing forming machine of the present invention after completely entering the hydraulic forming device with the blocking block abutting against the bottom of the mold assembly.

[0028] In the figure:

[0029] 1 - Turntable; 10 - Frame

[0030] 11 - Jacking base; 12 - Notch

[0031] 101 - Counterweight lifting mechanism; 102 - Limit block

[0032] 111 - Retreating groove; 2 - Mold assembly

[0033] 21 - Mold base; 22 - Inner mold

[0034] 23 - Outer mold; 3 - Hydroforming device

[0035] 31 - High - pressure inner cylinder; 32 - Load - bearing outer cylinder

[0036] 33 - Thrust cylinder; 321 - Long slot

[0037] 322 - Channel; 331 - Stop block

[0038] 4 - Demolding device; 41 - Sliding cylinder

[0039] 42 - Clamping assembly; 411 - Slide rail

[0040] 412 - Slide block; 413 - Sliding cylinder

[0041] 421 - Double - acting cylinder; 422 - Clamping plate

[0042] 5 - Feeding device; 51 - Feeding cover plate

[0043] 52 - Lifting cylinder; 53 - Feeding sealing cover plate

[0044] 54 - Feeding hopper; 55 - Vacuum loader

[0045] 56 - Automatic feeder; 551 - Suction pipe

[0046] 6 - Automatic vibrating device; 61 - Vibration machine housing

[0047] 62 - Connecting cylinder; 7 - Capping mechanism

[0048] 71 - Capping cylinder; 72 - Electric magnetic suction block

[0049] 73 - Upper cover; 8 - Detection mechanism

[0050] 81 - Detection cylinder; 82 - Detection rod Specific implementation mode

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] As Figures 1 to 4 shown, a three-station isostatic pressing machine includes a frame 10. A turntable 1 horizontally arranged and rotatably connected to the frame 10, a driving motor (not shown in the figure) for driving the turntable 1 to rotate, and three feeding parts evenly arranged around the turntable 1 at the top of the turntable 1 are provided. Mold assemblies 2 are arranged on all three feeding parts. The mold assembly 2 includes a mold base 21 fixedly arranged on the turntable 1, an inner mold 22 fixedly arranged on the mold base 21, and an outer mold 23 sleeved outside the inner mold 22. A feeding space is formed between the outer mold 23 and the inner mold 22. Feeding stations, a hydraulic forming station, and a demolding station are respectively formed above the turntable 1 corresponding to the positions of the three feeding parts. The rotation of the turntable 1 drives the mold assembly 2 to move successively between the feeding station, the hydraulic forming station, and the demolding station. A hydraulic forming device 3 is provided at the hydraulic forming station, a demolding device 4 is provided at the demolding station, and a feeding device 5 is provided at the feeding station. An opening for the mold assembly 2 to enter is provided at the bottom of the hydraulic forming device 3. A lifting base 11 is provided at the bottom of the turntable 1 corresponding to the opening position of the hydraulic forming device 3. When the mold assembly 2 rotates to the lower part of the hydraulic forming device 3, the top of the lifting base 11 abuts against the bottom of the mold assembly 2. A lifting mechanism for sending the lifting base 11 and the mold assembly 2 into the hydraulic forming device 3 is provided at the bottom of the lifting base 11. Notches 12 for the lifting base 11 to pass through are formed at the positions of the turntable 1 corresponding to each feeding part.

[0053] The hydroforming device 3 includes a high-pressure inner cylinder 31 and a load-bearing outer cylinder 32 sleeved outside the high-pressure inner cylinder 31. An opening for the mold assembly 2 to enter is provided at the bottom of the load-bearing outer cylinder 32. It should be noted that the high-pressure inner cylinder 31 in the present invention can adopt an existing high-pressure forming inner cylinder with a feeding port at the bottom in the art. The load-bearing outer cylinder 32 in the present invention is fixedly arranged on the frame 10 through a bracket. The position of the feeding port of the high-pressure inner cylinder 31 is higher than the position of the opening at the bottom of the load-bearing outer cylinder 32. The sealing method between the mold assembly 2 and the high-pressure inner cylinder 31 in the present invention is the same as that in the prior art. In the present invention, sealing is carried out through the mold base 21, that is, the size of the mold base 21 is adapted to the size of the feeding port of the high-pressure inner cylinder 31, so that when the mold assembly 2 completely enters the high-pressure inner cylinder 31 from the opening at the bottom of the load-bearing outer cylinder 31, the bottom of the mold base 21 can be flush with the feeding port of the high-pressure inner cylinder 31 and seal it; the load-bearing outer cylinder 32 in the present invention can adopt a conventional load-bearing outer cylinder in the art. Different from the prior art, a long groove 321 communicating with the feeding port is opened on the side wall of the load-bearing outer cylinder 32. The long groove 321 is located at the position between the bottom of the load-bearing outer cylinder 32 and the feeding port. After the mold assembly 2 completely enters the high-pressure inner cylinder 31, the bottom of the mold base 21 is flush with the top of the long groove 321. A horizontally arranged channel 322 is connected at the long groove 321. The other end of the channel 322 extends and is fixed to the bracket on the frame 1. An abutting cylinder 33 is provided at the other end of the channel 322. The output end of the abutting cylinder 33 is arranged towards the direction of the channel 322. A block 331 that can extend into the long groove 321 is provided at the output end of the abutting cylinder 33. A retreating groove 111 for the block 331 to extend into is opened downward at the top of the jacking base 11;

[0054] The lifting mechanism is arranged on the side of the jacking base 11 away from the turntable 1. It should be noted that the lifting mechanism in the present invention can adopt the existing conventional lifting mechanisms in the art, as long as the above effects can be achieved. Preferably, the lifting mechanism in the present invention adopts a conventional counterweight lifting mechanism 101. Before using the counterweight lifting mechanism 101 to send the jacking base 11 and the mold assembly 2 into the hydroforming device 3, a fixed-weight counterweight block can be loaded into the counterweight box (not shown in the figure) on the counterweight lifting mechanism 101. In the present invention, the bottom of the jacking base 11 is fixedly connected to the lifting end of the counterweight lifting mechanism 101 through a connecting plate. A limiting block 102 that abuts against the bottom of the load-bearing outer cylinder 32 is provided on the side of the lifting end of the counterweight lifting mechanism 101 close to the jacking base 11. The limiting block 102 is located below the hydroforming device 3. The height of the limiting block 102 in the present invention needs to be reasonably set according to the actual situation, so that when the counterweight lifting mechanism 101 drives the jacking base 11 and the mold assembly 2 to rise into the hydroforming device 3, when the limiting block 102 abuts against the bottom of the load-bearing outer cylinder 32, it means that the mold assembly 2 completely enters the high-pressure inner cylinder 31. By setting the counterweight lifting mechanism 101 to drive the jacking base 11 and the mold assembly 2 to lift, the lifting mechanism can maintain balance during operation, effectively avoid the imbalance of the jacking base 11 when rising or falling, effectively improve the stability of the jacking base 11 when rising and falling, reduce the load of the motor, reduce energy consumption, and improve work efficiency.

[0055] During operation, the counterweight lifting mechanism 101 drives the jacking base 11 and the mold assembly 2 to extend into the load-bearing outer cylinder 32 from the bottom together. After entering the load-bearing outer cylinder 32, it enters the high-pressure inner cylinder 31 through the feeding port. When the limiting block 102 abuts against the bottom of the load-bearing outer cylinder 32, it means that the mold assembly 2 completely enters the high-pressure inner cylinder 31, and the jacking base 11 stops rising. At this time, the mold base 21 seals the feeding port of the high-pressure inner cylinder 31, and then the output end of the abutting cylinder 33 extends, driving the blocking block 331 to extend into the retracting groove 111 of the jacking base 11 to abut against the bottom of the mold assembly 2. After that, the hydroforming device 3 starts the pressurizing and forming operation. After the pressurization is completed, the output end of the abutting cylinder 33 retracts, and the counterweight lifting mechanism 101 drives the jacking base 11 and the mold assembly 2 to descend together and return to the feeding part. Such a setting enables the mold assembly 2 to be supported and fixed by the blocking block 331 pushed out by the abutting cylinder 33 after entering the hydroforming device 3, reduces the load of the counterweight lifting mechanism 101, and improves the stability of the frame 10 when the hydroforming device 3 is working.

[0056] The feeding device 5 includes a feeding cover plate 51 arranged above the mold assembly 2 and a lifting assembly for driving the lifting of the feeding cover plate 51. Specifically, the lifting assembly includes lifting cylinders 52 arranged on both sides of the bottom of the feeding cover plate 51 and brackets for fixing the two lifting cylinders 52 respectively. The two brackets are vertically arranged and fixed on the frame 10. The output end of the lifting cylinder 52 is fixedly connected to the bottom of the feeding cover plate 51. A feeding sealing cover plate 53 for sealing the top of the outer mold 23 is arranged at the bottom of the feeding cover plate 51 corresponding to the position of the mold assembly 2. A feeding port penetrating the feeding cover plate 51 is formed on the feeding sealing cover plate 53. A plurality of feeding channels for communicating the feeding port and the discharging space are also arranged on the feeding sealing cover plate 53. Further, a feeding hopper 54 is arranged on the top of the feeding cover plate 51, and the outlet of the feeding hopper 54 extends into the feeding port;

[0057] The feeding device 5 further includes a vacuum loader 55 capable of automatically sucking materials and an automatic feeder 56 capable of automatically discharging materials, which are arranged above the feeding hopper 54. The vacuum loader 55 is arranged above the automatic feeder 56 and is hermetically connected to the automatic feeder 56. The vacuum loader 55 has a suction pipe 551. During use, the opening of the suction pipe 551 is correspondingly inserted into the material bag to be processed, so as to realize automatic material suction, and the sucked materials are stored in the vacuum loader 55. The discharge port of the vacuum loader 55 is hermetically connected to the feed port of the automatic feeder 56, and the discharge port of the automatic feeder 56 is hermetically connected to the feed port of the feeding sealing cover plate 53. The vacuum loader 55 in the present invention can adopt an existing commercially available vacuum loader in the art. The automatic feeder 56 in the present invention can adopt an existing twin-screw feeder or single-screw feeder in the art, as long as it can realize quantitative automatic feeding. The specific structure will not be described in detail here;

[0058] During operation, the vacuum loader 55 sucks the material to be processed into the vacuum loader 55 and conveys the material into the automatic feeder 56. When it is necessary to convey the material into the mold assembly 2, the turntable 1 drives the mold assembly 2 to rotate to the bottom of the feeding cover plate 51. The lifting cylinder 52 controls the feeding cover plate 51 to descend, so that the feeding sealing cover plate 53 seals the top of the outer mold 23 in the mold assembly 2 to prevent material leakage. The automatic feeder 56 conveys the required quantitative material for molding into the feeding space of the mold assembly 2 through the feeding hopper 54 and the feeding port of the feeding sealing cover plate 53. After the feeding is completed, the lifting cylinder 52 controls the feeding cover plate 51 to ascend; preferably, an automatic compaction device 6 for compacting the material in the feeding space is further provided below the feeding device 5. The automatic compaction device 6 is arranged at the bottom of the turntable 1. The automatic compaction device 6 includes a vibrator housing 61 and a vibrator (not shown in the figure) arranged in the vibrator housing 61. A vertically arranged connecting cylinder 62 is provided at the top of the vibrator housing 61, and the output end of the connecting cylinder 62 is arranged upward; when it is necessary to convey the material into the mold assembly 2, the automatic feeder 56 conveys the material into the feeding space, the output end of the connecting cylinder 62 extends upward to contact the mold base 21, and the vibrator is started. The vibration effect of the vibrator is transmitted to the mold assembly 2 through the connecting cylinder 62 to achieve the effect of compacting the material in the feeding space; compared with the prior art, the steps of manual material pressing or shaking are omitted, and the working efficiency is improved.

[0059] The demolding device 4 includes a vertically arranged sliding component 41 and a clamping component 42 provided on the sliding component 41. The sliding component 41 includes a vertically arranged slide rail 411, a slide block 412 that can slide on the slide rail 411, and a sliding cylinder 413 provided at the top of the slide rail 411 for driving the slide block 412 to slide. The clamping component 42 is fixedly provided on the slide block 412. The clamping component 42 includes a double-acting cylinder 421 horizontally arranged on the slide block 412. It should be noted that the double-acting cylinder 421 in this embodiment is a conventional double-acting cylinder (or double-shaft cylinder) with output shafts at both ends respectively. Clamping plates 422 for clamping the outer mold 23 are connected to the output ends on both sides of the double-acting cylinder 421. Correspondingly, the end of the clamping plate 422 away from the double-acting cylinder 421 is in an arc shape adapted to the contour of the outer mold 23. Preferably, there are two groups of clamping components 42 in the present invention, that is, there are two slide blocks 412 on the slide rail 411, and clamping components 42 are provided on both slide blocks 412. The distance between the two groups of clamping components 42 is less than or equal to the height of the outer mold 23. Arranging two groups of clamping components 42 can make the force more uniform during clamping and the clamping more stable. In the present invention, the sliding cylinder 413 drives the slide block 412 to slide through a screw motor, that is, the sliding cylinder 413 is a screw cylinder. The screw of the screw cylinder is arranged downward, and the slide block 412 is fixedly arranged on the screw of the screw cylinder so that the sliding cylinder 413 can drive the slide block 412 to slide on the slide rail 411. It should be noted that the driving method between the sliding cylinder 413 and the slide block 412 in the present invention can also be replaced by other conventional methods in the art as long as the above effects can be achieved;

[0060] The working principle of the demolding device 4 is as follows: When not working, both clamping components 42 are located above the slide rail 411. After the material in the mold assembly 2 is pressurized and formed into a blank by the hydraulic forming device 3, the counterweight lifting mechanism 101 drives the lifting base 11 and the mold assembly 2 to descend and re-locate on the corresponding feeding part. The turntable 1 drives the formed mold assembly 2 to rotate to the position of the demolding device 4. The sliding cylinder 413 controls the two slide blocks 412 to move downward to the position of the outer mold 23 and then stop. The double-acting cylinder 421 controls the clamping plates 422 to clamp the outer mold 23 and the sliding cylinder 413 lifts the outer mold 23 away from the inner mold 22. The operator takes out the formed blank from the inner mold 22. After taking out, the sliding cylinder 413 lowers the outer mold 23 again and sleeves it on the inner mold 22. Then the double-acting cylinder 421 controls the clamping plates 422 to release the outer mold 23, and the sliding cylinder 413 raises the clamping component 42 back above the slide rail 411 to wait for the next demolding.

[0061] Further, on one side of the hydraulic forming device 3, there is also a capping mechanism 7 for sealing the top of the mold assembly 2 and a detection mechanism 8 for detecting whether the material in the mold assembly 2 is filled completely. Both the capping mechanism 7 and the detection mechanism 8 are arranged on the rotation path of the mold assembly 2. The capping mechanism 7 includes a capping cylinder 71 vertically and fixedly arranged above the turntable 1. The output end of the capping cylinder 71 is arranged downward. An electric magnetic suction block 72 is fixedly arranged at the output end of the capping cylinder 71. At the bottom of the electric magnetic suction block 72, there is an upper cover 73 for sealing the mold assembly 2. The detection mechanism 8 includes a detection cylinder 81 vertically and fixedly arranged above the turntable 1. The output end of the detection cylinder 81 is arranged downward. A detection rod 82 is fixedly arranged at the output end of the detection cylinder 81;

[0062] After the automatic feeder 56 finishes feeding the material into the feeding space of the mold assembly 2, the turntable 1 drives the mold assembly 2 with the fed material to rotate to the bottom of the detection mechanism 8. The detection cylinder 81 controls the detection rod 82 to extend and enter the feeding space from the top of the mold assembly 2 for detection, to detect whether the height of the material reaches a preset value (that is, to detect whether the material is filled completely. The detection method is a conventional method. For example, by setting a stroke sensing device on the detection cylinder 81 or a distance sensor at the bottom of the detection rod 82, as long as the above effect can be achieved, this embodiment does not make a limitation here). After the detection is completed, the detection rod 82 retracts. Then the turntable 1 rotates to the bottom of the capping mechanism 7. The output end of the capping cylinder 71 extends downward to cover and seal the upper cover 73 on the top of the mold assembly 2. After sealing the mold assembly 2, the electric magnetic suction block 72 is powered off, so that the electric magnetic suction block 72 has no magnetism. The output end of the capping cylinder 71 retracts to complete the capping operation; when the mold assembly 2 is formed, the turntable 1 drives the formed mold assembly 2 to rotate to the position of the capping mechanism 7. The output end of the capping cylinder 71 extends downward to the top of the upper cover 73, powers on the electric magnetic suction block 72 to suck the upper cover 73, and then the output end of the capping cylinder 71 drives the upper cover 73 to retract and wait for the next capping operation.

[0063] The present invention further includes a control mechanism. The drive motor, the counterweight lifting mechanism 101, the hydraulic forming device 3, the abutting cylinder 33, the lifting cylinder 52, the vacuum feeder 55, the automatic feeder 56, the vibrator, the connecting cylinder 62, the sliding cylinder 413, the double - acting cylinder 421, the capping cylinder 71 and the detection cylinder 81 are all controlled and connected to the control mechanism. The control connection method in the present invention can adopt the conventional control method in the field, such as PLC control. It should be noted that, according to actual use needs, the cylinders mentioned in the present invention can also be replaced with oil cylinders.

[0064] The working principle of the forming machine of the present invention is:

[0065] The control mechanism controls the driving motor to drive the turntable 1 to drive the mold assembly 2 on one of the feeding parts to rotate to the feeding device 5. The control mechanism controls the lifting cylinder 52 to drive the feeding cover plate 51 to descend, so that the feeding sealing cover plate 53 seals with the top of the mold assembly 2. The control mechanism controls the automatic feeder 56 to convey the required quantitative material for molding through the feeding port of the feeding sealing cover plate 53 into the feeding space of the mold assembly 2. The control mechanism controls the output end of the connecting cylinder 62 to extend upward to contact the mold base 21 and starts the vibrator to vibrate and compact the material in the feeding space. After the feeding is completed, the lifting cylinder 52 drives the feeding cover plate 51 to rise to end the feeding. The turntable 1 drives the mold assembly 2 that has completed feeding to rotate to the bottom of the detection mechanism 8. The detection cylinder 81 controls the detection rod 82 to extend to the top of the feeding space. After the detection rod 82 detects the material at the top of the feeding space, it retracts and sends a signal to the control mechanism. The control mechanism controls the turntable 1 to rotate to the bottom of the capping mechanism 7. The output end of the capping cylinder 71 extends downward to cover and seal the upper cover 73 on the top of the mold assembly 2 (if the detection rod 82 does not detect the material at the top of the feeding space, it belongs to the situation where the material is not filled. At this time, a signal is sent to the control mechanism, and the control mechanism stops the subsequent actions and issues an alarm to remind the operator to check). After the mold assembly 2 is sealed, the electric magnetic suction block 72 is powered off, and the output end of the capping cylinder 71 retracts to complete the capping operation. The control mechanism controls the turntable 1 to drive the capped mold assembly 2 to rotate to the bottom of the hydraulic forming device 3. The control mechanism controls the counterweight lifting mechanism 101 to rise to drive the jacking base 11 and the mold assembly 2 to extend into the opening of the load-bearing outer cylinder 32 together. After the mold assembly 2 enters the load-bearing outer cylinder 32 from the opening, it then enters the high-pressure inner cylinder 31 through the feeding port. When the mold assembly 2 completely enters the high-pressure inner cylinder 31, the jacking base 11 stops rising. At this time, the mold base 21 seals the feeding port of the high-pressure inner cylinder 31. Then the control mechanism controls the output end of the abutting cylinder 33 to extend, driving the stop block 331 to extend into the yielding groove 111 of the jacking base 11 to abut against the mold assembly 2. After that, the hydraulic forming device 3 starts to work. At this time, the mold assembly 2 on the other feeding part is located at the bottom of the feeding device 5. The control mechanism controls the feeding device 5 to perform the above-mentioned feeding work on the mold assembly 2 at its bottom;

[0066] After the operation of the hydroforming device 3 is completed, the feeding of another mold assembly 2 is also completed. The control mechanism controls the lowering of the counterweight lifting mechanism 101 to drive the lifting base 11 and the mold assembly 2 to descend together and return to the corresponding feeding part. The turntable 1 drives the formed mold assembly 2 to rotate to the position of the capping mechanism 7. The output end of the capping cylinder 71 extends downward to the top of the upper cover 73. The control mechanism energizes the electric magnetic suction block 72 to suck the upper cover 73. Then, the output end of the capping cylinder 71 drives the upper cover 73 to retract and wait for the next capping operation. After that, the turntable 1 drives another mold assembly 2 after feeding to rotate to the bottom of the detection mechanism 8 and repeats the above detection and capping operations;

[0067] After that, the turntable 1 drives the formed mold assembly 2 to rotate to the demolding device 4 to perform the above demolding work. At this time, the just-capped mold assembly 2 is located at the bottom of the hydroforming device 3, and the remaining mold assembly 2 is located at the bottom of the feeding device 5. While the mold assembly 2 is performing the demolding work, the control mechanism controls to send the capped mold assembly 2 into the hydroforming device 3, and the control mechanism controls the feeding device 5 to perform the above feeding work on the mold assembly 2 at its bottom; when the operation of the hydroforming device 3 is completed, the other two mold assemblies 2 also complete the demolding and feeding work. After that, the control mechanism controls each mechanism to orderly repeat the above operations, and so on.

[0068] The isostatic pressing machine of the present invention, by providing three feeding parts on the turntable 1 and respectively providing a hydroforming device 3, a demolding device 4 and a feeding device 5 above the turntable 1 corresponding to the positions of the three feeding parts, can realize automatic feeding and automatic demolding, and the mold assembly 2 can also perform automatic demolding and automatic feeding work on the mold assemblies 2 on other feeding parts while entering the hydroforming device 3 for forming work, with high automation and high working efficiency; and a detection mechanism 8, a capping mechanism 7 and an automatic compaction device 6 are provided, further improving the automation degree and reducing the labor intensity of the staff.

[0069] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-station isostatic pressing machine, comprising a frame, characterized in that, a turntable horizontally arranged and rotatably connected to the frame, a driving motor for driving the turntable to rotate, and three feeding parts evenly arranged around the turntable with the turntable as the center are provided on the frame. Mold assemblies are provided on the three feeding parts. A feeding space is provided inside the mold assemblies. Above the turntable, a hydraulic forming device, a demolding device, and a feeding device are respectively arranged corresponding to the positions of the three feeding parts. The rotation of the turntable drives the mold assemblies to move successively between the feeding device, the hydraulic forming device, and the demolding device. An opening for the mold assembly to enter is provided at the bottom of the hydraulic forming device. The bottom of the mold assembly is hermetically connected to the opening at the bottom of the hydraulic forming device. A lifting mechanism for feeding the mold assembly into the hydraulic forming device is provided at the bottom of the turntable corresponding to the position of the hydraulic forming device. A control mechanism for controlling the coordinated linkage of the driving motor, the lifting mechanism, the feeding device, and the demolding device is further provided on the frame; the feeding device includes a feeding cover plate that can be lifted above the mold assembly and an automatic feeder arranged above the feeding cover plate. The bottom of the feeding cover plate is hermetically connected to the top of the mold assembly. A material conveying port communicating with the feeding space is provided in the middle of the feeding cover plate. The discharging port of the automatic feeder is hermetically connected to the material conveying port of the feeding cover plate; the demolding device is used to remove the outer shell of the mold assembly. The demolding device includes a vertically arranged sliding assembly and a clamping assembly fixedly arranged on the sliding assembly for clamping the mold assembly.

2. The three-station isostatic pressing machine according to claim 1, characterized in that, a sealing mechanism for sealing the top of the mold assembly is further provided on one side of the hydraulic forming device. The sealing mechanism is arranged above the turntable and on the rotation path of the mold assembly. A top cover for sealing the mold assembly is provided at the bottom of the sealing mechanism.

3. The three-station isostatic pressing machine according to claim 1, characterized in that, a detection mechanism for detecting whether the material in the mold assembly is filled completely is further provided on one side of the hydraulic forming device. The detection mechanism is arranged above the turntable and on the rotation path of the mold assembly.

4. The three-station isostatic pressing machine according to claim 1, characterized in that, The hydraulic forming device includes a high-pressure inner cylinder and a load-bearing outer cylinder sleeved outside the high-pressure inner cylinder. The bottom of the high-pressure inner cylinder has a feeding port. The load-bearing outer cylinder is fixedly arranged above the frame. The feeding port of the high-pressure inner cylinder is higher than the bottom of the load-bearing outer cylinder. A long groove communicating with the feeding port is opened on the side wall of the load-bearing outer cylinder. The long groove is located at a position between the bottom of the load-bearing outer cylinder and the feeding port. When the mold assembly is located in the high-pressure inner cylinder, the bottom of the mold base is flush with the top of the long groove. A horizontally arranged channel is connected to the long groove. The other end of the channel is provided with a jacking cylinder. The output end of the jacking cylinder is arranged towards the direction of the channel. A block that can extend into the long groove is provided at the output end of the jacking cylinder. A jacking base is further provided at the bottom of the hydraulic forming device. The jacking base is arranged between the mold assembly and the lifting mechanism. A recessed groove for the block to extend into is opened downward at the top of the jacking base. Notches for the jacking base to pass through are respectively opened at positions on the turntable corresponding to each of the feeding parts.

5. A three-station isostatic pressing machine according to claim 4, characterized in that the lifting mechanism is a counterweight lifting mechanism. The counterweight lifting mechanism is arranged on a side of the jacking base away from the turntable. The bottom of the jacking base is fixedly connected to the counterweight lifting mechanism. A limiting block is arranged on a side of the counterweight lifting mechanism close to the jacking base. The limiting block is located at the bottom of the load-bearing outer cylinder. When the limiting block abuts against the bottom of the load-bearing outer cylinder, the mold assembly completely enters the high-pressure inner cylinder.

6. A three-station isostatic pressing machine according to claim 1, characterized in that a feeding sealing cover plate for sealing the top of the mold assembly is arranged at the bottom of the feeding cover plate corresponding to the position of the mold assembly. The feeding port penetrates through the feeding cover plate and the feeding sealing cover plate. A feeding hopper is further arranged at the top of the feeding cover plate. The outlet of the feeding hopper extends into the feeding port. A vacuum feeding machine is further arranged above the automatic feeding machine. The vacuum feeding machine is hermetically connected to the automatic feeding machine. The vacuum feeding machine has a suction pipe for sucking materials.

7. A three-station isostatic pressing machine according to claim 1, characterized in that an automatic vibrating device for vibrating the materials in the feeding space is further arranged below the feeding device. The automatic vibrating device is arranged at the bottom of the turntable. The automatic vibrating device includes a vibrating machine housing and a vibrating machine arranged in the vibrating machine housing. A vertically arranged connecting cylinder is arranged at the top of the vibrating machine housing. The output end of the connecting cylinder is arranged upward.

8. A three-station isostatic pressing machine according to claim 1, characterized in that the mold assembly includes a mold base arranged on the turntable, an inner mold fixedly arranged on the mold base, and an outer mold sleeved outside the inner mold. A feeding space is formed between the outer mold and the inner mold.

9. A three-station isostatic pressing machine according to claim 8, characterized in that The sliding assembly includes a vertically arranged slide rail, a slide seat that can slide on the slide rail, and a sliding cylinder arranged at the top of the slide rail for driving the slide seat to slide. The clamping assembly is fixedly arranged on the slide seat. The clamping assembly includes a two-way cylinder horizontally arranged on the slide seat. Output ends on both sides of the two-way cylinder are each connected with a clamping plate for clamping the outer mold, and one end of the clamping plate away from the two-way cylinder is arc-shaped.

10. A three-station isostatic pressing machine according to claim 9, characterized in that there are two sets of the clamping assemblies, two slide seats are respectively arranged on the slide rail at positions corresponding to the two sets of the clamping assemblies, and the distance between the two sets of the clamping assemblies is less than or equal to the height of the outer mold.

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