Elevating core core mold vibration pipe making machine

Abstract

The application discloses a lift core type core mold vibration pipe making machine, and aims to solve the problem that the existing material distribution system usually only relies on the visual judgment of an operator, and it is difficult to realize accurate and timely detection and control, and the pipe forming quality is easily affected due to poor material state. Technical scheme points are as follows: including: base, mold system, vibration system, lifting system, material distribution system and control system. The transparent detection tube is arranged at the end of the mixing cylinder of the material distribution system, and the adjusting plate connected with the elastic member and the built-in detection unit are arranged in the detection tube, so that the force of the material on the adjusting plate can be sensed in real time, the flow state and the state parameters such as the material characteristics of the material are judged, accurate data feedback is provided for the control system, the traditional manual visual judgment mode is effectively replaced, the timeliness and accuracy of the material state detection are significantly improved, and the stability of the pipe forming quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of tube making equipment technology, and more specifically, to a core-lifting mandrel vibration tube making machine. Background Technology

[0002] The core-mold vibration pipe-making machine is a specialized forming equipment for producing reinforced concrete drainage pipes and other concrete pipes. This equipment adopts a core-mold vibration forming process, in which semi-dry concrete is placed into the cavity between the outer mold and the inner mold. The high-frequency vibration of the inner mold liquefies and compacts the concrete mixture, thereby forming the pipe. Compared with the traditional suspension roller, centrifugal and insertion vibration processes, the core-mold vibration pipe-making process has the advantages of high production efficiency, high pipe strength, good homogeneity, convenient demolding, and low labor intensity.

[0003] Existing core mold vibration pipe forming machines typically include components such as a base, mold system, vibration system, lifting system, material placement system, and control system. Among them, the material placement system is used to feed concrete material into the cavity above the cavity between the outer mold and the core mold. However, in actual use, existing material placement systems lack effective real-time detection methods during material conveying and placement. The moisture content, uniformity, and other state parameters of the concrete material have a significant impact on the core mold vibration forming quality, but existing material placement systems usually rely solely on the operator's visual judgment of the material state, making it difficult to achieve accurate and timely detection and control. This can easily affect the pipe forming quality due to poor material state.

[0004] To address the shortcomings of the existing technology, it is necessary to provide an improved core-lifting type core mold vibration tube forming machine to achieve real-time detection of material status, thereby improving tube forming quality and material utilization. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a core-lifting type core mold vibration tube making machine, which solves the defects existing in the above-mentioned background technology.

[0006] The above-mentioned technical objective of this invention is achieved through the following technical solution: a core-lifting type core mold vibration tube-making machine, comprising: The base is equipped with a multi-stage shock absorption mechanism to absorb high-frequency vibrations during operation; The mold system includes an outer mold disposed on a base, a mold core serving as an inner mold, and a cover plate and a base plate for closing the outer mold, the top and bottom of the mold core, wherein a cavity is formed between the outer mold and the mold core for tube forming; A vibration system, mounted on the base, is used to vibrate the mold core; The lifting system is equipped with tracks that are compatible with the base to move the mold core and cover plate. The material feeding system is equipped with a frame that is adapted to the base to feed the material into the cavity from above; A control system is used to control the operation of the above-mentioned systems; The fabric feeding system includes a conveyor belt mounted on a frame and controlled by a control system, a feed hopper mounted at the beginning of the conveyor belt, a guide hopper mounted at the end of the conveyor belt, and a mixing device mounted on the frame. The mixing device includes a mixing cylinder fixedly connected to the frame and a stirring assembly disposed inside the mixing cylinder and controlled by the control system. The discharge end of the guide hopper and the mixing cylinder are interconnected through a feed pipe. A detection tube is provided at the end of the mixing cylinder. The detection tube is transparent and contains several adjusting plates. The adjusting plates are connected to the detection tube through elastic elements. A detection unit is provided inside the elastic elements to detect the force exerted by the material on the adjusting plates. A control valve one connected to the control system is provided on the detection tube, and a control valve two connected to the control system is provided on the feed pipe. A discharge pipe is connected to the end of the detection tube, and the end of the discharge pipe is located above the cavity.

[0007] The present invention is further configured such that: the elastic element includes a connecting block fixedly connected to the inner wall of the detection tube, a connecting groove formed on the connecting block, an abutment block fixedly connected to the side wall of the adjustment plate, and a spring having one end connected to the abutment block and the other end connected to the bottom of the connecting groove; when the spring is in its natural state, the end of the abutment block away from the spring is in contact with the adjustment plate.

[0008] The invention is further configured such that: the detection unit includes a slider fixedly connected to the side wall of the abutment block and a groove formed on the inner wall of the connecting groove; the slider is slidably connected to the groove; a pressure sensor connected to the control system is fixedly connected to the inner wall of the groove; and the slider and the pressure sensor are separated when the spring is in its natural state.

[0009] The present invention is further configured such that two adjacent adjustment plates are connected by a polyurethane elastic plate.

[0010] The present invention is further configured such that: a guide pipe is installed on the discharge pipe, a storage tank installed on the frame is provided at the end of the guide pipe, and a guide assembly is provided between the discharge pipe and the guide pipe to guide the material in the discharge pipe to flow into the guide pipe.

[0011] The present invention is further configured such that: the diversion assembly includes a cylinder one installed on the side wall of the discharge pipe and controlled by a control system, a cylinder two installed on the side wall of the diversion pipe and controlled by a control system, a diversion plate fixedly connected to the piston end of cylinder one, and a baffle fixedly connected to the piston end of cylinder two. The discharge pipe has a through groove one for the diversion plate to slide, and the diversion plate always closes the through groove one. When cylinder one is in its shortest stroke, the diversion plate is located in the through groove one. When cylinder one is in its longest stroke, the end of the diversion plate away from cylinder one is in contact with the inner wall of the discharge pipe, and at this time the diversion plate is located below the connection between the diversion pipe and the discharge pipe. The side wall of the diversion pipe has a through groove two for the baffle to slide. When cylinder two is in its shortest stroke, the end of the baffle away from cylinder two is in the through groove two. When cylinder two is in its longest stroke, the end of the baffle away from cylinder two is in contact with the inner wall of the diversion pipe.

[0012] The present invention is further configured such that: the stirring assembly includes a motor fixedly connected to the side wall of the mixing cylinder and controlled by the control system, and a connecting shaft fixedly connected to the output end of the motor; the connecting shaft extends laterally through the mixing cylinder into its interior and is rotatably connected to the inner wall of the mixing cylinder; a plurality of stirring rods are fixedly connected to the side wall of the connecting shaft; the plurality of stirring rods are evenly distributed on the side wall of the connecting shaft; and a plurality of stirring teeth are fixedly connected to the side wall of the stirring rods.

[0013] The present invention is further configured such that: a plurality of dispersing teeth are fixedly connected to the inner wall of the feed hopper, and the plurality of dispersing teeth are evenly distributed on the inner wall of the feed hopper.

[0014] In summary, the present invention has the following beneficial effects: By setting a transparent detection tube at the end of the mixing cylinder of the fabric system, and configuring an adjustment plate connected by an elastic element and a built-in detection unit inside the detection tube, the force of the material on the adjustment plate can be sensed in real time, thereby judging the flow state and material characteristics of the material and providing accurate data feedback for the control system. This effectively replaces the traditional manual visual judgment method, significantly improves the timeliness and accuracy of material state detection, and ensures the stability of the pipe forming quality. By setting up control valve one and control valve two connected to the control system, and configuring a flow guide component and a storage tank at the discharge pipe, when the detection unit detects that the material state does not meet the molding requirements, the control system can automatically close control valve one and open the flow guide component to guide the unqualified material to the storage tank for temporary storage, thereby preventing unqualified material from entering the cavity and participating in molding, thus effectively reducing the scrap rate and improving material utilization and production economy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram of the structure of the present invention. Figure 4 .

[0016] In the diagram: 1. Base; 2. Mold system; 3. Vibration system; 4. Lifting system; 5. Material distribution system; 6. Control system; 7. Conveyor belt; 8. Feed hopper; 9. Guide hopper; 10. Mixing device; 11. Mixing cylinder; 12. Agitator assembly; 13. Feed pipe; 14. Detection pipe; 15. Adjusting plate; 16. Elastic element; 17. Detection unit; 18. Control valve one; 19. Control valve two; 20. Discharge pipe; 21. Connecting block; 22. Connecting groove; 23. Abutment block; 24. Spring; 25. Slider; 26. Slide groove; 27. Pressure sensor; 28. Polyurethane elastic plate; 29. ​​Drainage pipe; 30. Storage tank; 31. Cylinder one; 32. Cylinder two; 33. Drainage plate; 34. Baffle; 35. Dispersion teeth; 36. Agitator rod; 37. Motor; 38. Connecting shaft. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0018] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Core-lifting type core mold vibration tube making machine, such as Figures 1-5 As shown, it includes a base 1, a mold system 2, a vibration system 3, a lifting system 4, a material feeding system 5, and a control system 6.

[0021] The base 1, serving as the installation foundation for the entire tube-making machine, is integrally cast from high-strength cast iron or cast steel, possessing sufficient structural strength and rigidity to bear the loads generated during the operation of each system. The bottom of the base 1 is equipped with a multi-stage damping mechanism to absorb the high-frequency vibrations generated during the operation of the core-lifting mandrel vibration tube-making machine. Specifically, the multi-stage damping mechanism includes four first damping components located at the four corners of the bottom surface of the base 1 and a second damping component located in the central area of ​​the bottom surface of the base 1. The first and second damping components can be one or more combinations of rubber damping pads, spring dampers, or hydraulic dampers. Taking a spring damper as an example, it includes a fixed tube fixedly connected to the bottom surface of the base 1, a sliding column slidably connected to the inner wall of the fixed tube, and a damping spring sleeved around the sliding column. When the high-frequency vibrations generated by the mandrel vibration are transmitted to the first damping components through the base 1, the damping spring undergoes elastic deformation, diverting the vibrations. Energy is converted into the elastic potential energy and thermal energy of the damping spring to achieve primary buffering and damping; then the vibration continues to be transmitted to the second damping component for secondary buffering and damping. Through the synergistic effect of the multi-stage damping mechanism, the high-frequency vibration during operation can be effectively attenuated, preventing the device from moving as a whole or causing damage to the device due to vibration, thereby greatly improving the service life and operational stability of the core-lifting type core mold vibration tube making machine. The base 1 can be manufactured using conventional casting processes. First, a sand mold is made, and then molten cast iron or cast steel is poured into the mold. After cooling, sand removal, deburring, heat treatment, and machining, the finished product is obtained.

[0022] The mold system 2 includes an outer mold mounted on a base 1, a mold core serving as an inner mold, and a cover plate and a base plate for sealing the top and bottom of the outer mold and the mold core. The outer mold has a cylindrical structure and is made of high-quality carbon structural steel or alloy steel. Its inner wall is precision machined to ensure the smoothness of the pipe's outer wall. A slot is provided on the outer surface of the base 1, and the outer mold is slidably connected within the slot. The mold core has a hollow cylindrical structure, with its outer diameter smaller than the inner diameter of the outer mold. The outer wall of the mold core is also precision machined to ensure the smoothness of the pipe's inner wall. A vibrator mounting chamber is provided inside the mold core for containing... The vibration generator of the nano-vibration system 3; the cover plate is installed on the upper surface of the outer mold and the mold core, and the bottom plate is fixedly connected to the inner wall of the outer mold. The cover plate and the bottom plate work together to close the annular space between the outer mold and the mold core at the top and bottom respectively, thereby forming a cavity between them for tube forming; the outer mold, mold core, cover plate and bottom plate can all be manufactured by conventional machining methods, including casting, forging, turning, milling, grinding and other processes. The fitting accuracy between each component needs to be controlled within IT6~IT8 level to ensure the sealing and forming accuracy of the mold system 2.

[0023] Vibration system 3 is installed on base 1 to generate high-frequency vibration and transmit it to the mold core. Vibration system 3 includes a vibration generator installed in the internal cavity of the mold core. The output end of the vibration generator is fixedly connected to the inner wall of the mold core. The vibration generator is controlled by control system 6. When control system 6 issues a vibration command, the vibration generator starts and generates high-frequency vibration at the set frequency and amplitude. The vibration is transmitted through the cylinder wall of the mold core to the concrete material in the cavity, causing the concrete mixture to liquefy and compact under the action of vibration, thereby achieving high-quality molding of the pipe. The vibration generator can use a commercially available variable frequency vibration motor 37. The vibration frequency and amplitude can be adjusted by the frequency converter to adapt to the molding requirements of different specifications of pipes and different material states. The vibration generator is installed by conventional bolt fastening connection. Its power line and control line are led out through the wire hole opened on the mold core and electrically connected to control system 6.

[0024] The lifting system 4 is equipped with a track adapted to the base 1 to drive the mold core and cover plate to move. The track is vertically fixed to one or both sides of the base 1 and is made of I-beams or square steel. Its surface is precision machined to ensure smooth sliding. The lifting system 4 also includes a lifting drive mechanism, such as a hydraulic cylinder or an electric screw jack. The fixed end of the lifting drive mechanism is installed on the base 1, and the movable end is fixedly connected to the mold core and cover plate through a connecting frame. After the tube is formed, the control system 6 controls the lifting system 4 to start. The lifting drive mechanism drives the mold core and cover plate to move upward along the track, so that the mold core is slowly pulled out from the formed tube, completing the demolding operation. The lifting system 4 can also be used to adjust the mold core to a suitable height position before the material is laid. All components of the track and the lifting drive mechanism can be manufactured by conventional machining and welding processes. The hydraulic cylinder can use commercially available standard hydraulic components.

[0025] Control system 6 is used to control the coordinated operation of the above systems. Control system 6 includes PLC, human-machine interface, various sensors such as displacement sensors and temperature sensors, and corresponding actuators such as solenoid valves, relays, and frequency converters. PLC, as the control core, automates the control of each system through preset control programs to achieve coordinated operation of the entire process of material laying, vibration, core lifting, and demolding. Human-machine interface is used by operators to set process parameters such as vibration frequency, material laying speed, and core lifting speed and to monitor the equipment operating status in real time. All electrical components of control system 6 can be commercially available standard industrial control products, which are installed in the control cabinet through conventional electrical assembly processes. The control cabinet is fixed to one side of base 1.

[0026] The material feeding system 5 is equipped with a frame that is compatible with the base 1, which is used to feed the material into the cavity from above. The frame is made of welded steel and its bottom is fixed to the ground on one side of the base 1 by anchor bolts. The height of the frame must ensure that all components of the material feeding system 5 are located above the cavity. The material feeding system 5 includes a conveyor belt 7 mounted on the frame and controlled by the control system 6, a feed hopper 8 mounted at the beginning of the conveyor belt 7, a guide hopper 9 mounted at the end of the conveyor belt 7, and a mixing device 10 mounted on the frame.

[0027] The conveyor belt 7 adopts a conventional belt conveyor structure, including a drive roller, a driven roller, a conveyor belt, and a drive motor 37. The drive roller and the driven roller are rotatably connected to the first and last ends of the frame, respectively. The conveyor belt is wound between the drive roller and the driven roller. The output end of the drive motor 37 is connected to the drive roller for transmission. The drive motor 37 is controlled by the control system 6. When the control system 6 issues a material feeding command, the drive motor 37 starts, drives the drive roller to rotate, and then drives the conveyor belt to move, conveying the material falling into the feed hopper 8 to the end. All components of the conveyor belt 7 can use commercially available standard conveyor parts and be installed on the frame through conventional assembly processes.

[0028] The feed hopper 8 is fixedly connected to the first end of the frame and located directly above the first end of the conveyor belt 7. The feed hopper 8 has a funnel-shaped structure that is larger at the top and smaller at the bottom. It is made of welded steel plates and has a discharge port at the bottom. The discharge port is directly opposite the upper surface of the conveyor belt 7. The operator or the upstream feeding equipment puts the concrete material into the feed hopper 8 from above. The material falls onto the conveyor belt 7 under the action of gravity.

[0029] The guide hopper 9 is fixedly connected to the end of the frame and located below the end of the conveyor belt 7. The guide hopper 9 also has a funnel-shaped structure, made of welded steel plates. Its top opening receives the material falling from the end of the conveyor belt 7, and its bottom outlet is connected to the feed pipe 13 of the mixing device 10. Several dispersing teeth 35 are fixedly connected to the inner wall of the guide hopper 9. These teeth are evenly distributed on the inner wall of the guide hopper 9 and can be made of round or flat steel, fixed to the inner wall of the guide hopper 9 by welding. When material falls from the end of the conveyor belt 7 into the guide hopper 9, it falls along the inner wall of the guide hopper 9 under gravity and collides with the dispersing teeth 35. The dispersing teeth 35 break up any clumps of material, allowing the material to enter the subsequent mixing device 10 more evenly. The spacing and number of the dispersing teeth 35 can be adjusted according to the characteristics of the material; generally, the spacing between adjacent dispersing teeth 35 is 50~100mm.

[0030] The mixing device 10 includes a mixing cylinder 11 fixedly connected to the frame and a stirring assembly 12 disposed inside the mixing cylinder 11 and controlled by the control system 6. The mixing cylinder 11 has a cylindrical structure and is welded from wear-resistant steel plate. It has a feed inlet at the top to communicate with the discharge end of the guide hopper 9 through the feed pipe 13, and a discharge outlet at the bottom or side wall to connect with the subsequent detection pipe 14. The mixing cylinder 11 is fixedly connected to the frame by bolts, and its installation height must ensure that the material can flow smoothly under the action of gravity.

[0031] The mixing assembly 12 includes a motor 37 fixedly connected to the side wall of the mixing cylinder 11 and controlled by the control system 6, and a connecting shaft 38 fixedly connected to the output end of the motor 37. The motor 37 is a variable frequency speed control motor 37, which is fixed to the outer side wall of the mixing cylinder 11 through a motor 37 mounting seat. Its output shaft is fixedly connected to one end of the connecting shaft 38 through a coupling. The connecting shaft 38 extends laterally through the side wall of the mixing cylinder 11 into its interior. A sealed bearing is provided between the connecting shaft 38 and the side wall of the mixing cylinder 11 to ensure rotational sealing. The end of the connecting shaft 38 away from the motor 37 is rotatably connected to the inner wall of the mixing cylinder 11 through a bearing. Several stirring rods 36 are fixedly connected to the side wall of the connecting shaft 38. The stirring rods 36 are evenly distributed on the side wall of the connecting shaft 38. The stirring rods 36 can be made of round steel and fixed to the connecting shaft 38 by welding or threaded connection. The included angle between adjacent stirring rods 36 is preferably 60°~120° to make the stirring more uniform. Several stirring teeth are also fixedly connected to the side wall of the stirring rod 36. The stirring teeth can be short rotating bodies or plate-shaped structures, which are fixed to the side wall of the stirring rod 36 by welding, further increasing the contact area between the stirring assembly 12 and the material, and improving the stirring and mixing effect. When the material enters the mixing cylinder 11 through the guide hopper 9 and the feed pipe 13, the control system 6 controls the motor 37 to start. The motor 37 drives the connecting shaft 38 to rotate. The connecting shaft 38 drives the stirring rod 36 and the stirring teeth to rotate synchronously, so as to fully stir and mix the material in the mixing cylinder 11, making the distribution of each component of the material more uniform. The mixing cylinder 11, the connecting shaft 38, the stirring rod 36 and the stirring teeth can all be manufactured by conventional machining methods, including turning, milling, welding, heat treatment and other processes.

[0032] A detection tube 14 is provided at the end of the mixing cylinder 11. The detection tube 14 is transparent and can be made of high-strength transparent polycarbonate or plexiglass, allowing operators to directly observe the flow and appearance of the material inside the tube from the outside. One end of the detection tube 14 is connected to the discharge port of the mixing cylinder 11, and the other end is connected to the discharge pipe 20. Several adjusting plates 15 are provided inside the detection tube 14, and the adjusting plates 15 are arranged at intervals along the axial direction of the detection tube 14. The adjusting plates 15 can be made of stainless steel or wear-resistant engineering plastic, and their shape is adapted to the cross-section of the inner cavity of the detection tube 14. A gap is left between the adjusting plates 15 and the detection tube 14 to allow material to pass through.

[0033] The adjusting plate 15 is connected to the detection tube 14 via an elastic element 16. Specifically, the elastic element 16 includes a connecting block 21 fixedly connected to the inner wall of the detection tube 14, a connecting groove 22 formed on the connecting block 21, an abutment block 23 fixedly connected to the side wall of the adjusting plate 15, and a spring 24 with one end connected to the abutment block 23 and the other end connected to the bottom of the connecting groove 22. The connecting block 21 can be made of metal or plastic and is fixed to the inner wall of the detection tube 14 by adhesive or bolt connection. The connecting blocks 21 are evenly distributed along the circumference of the detection tube 14. The connecting groove 22 is formed on the side of the connecting block 21 facing the adjusting plate 15 and has a blind hole structure. The abutment block 23 is fixedly connected to the side wall of the adjusting plate 15, and its position corresponds one-to-one with the connecting groove 22. One end of the abutment block 23 is inserted into the connecting groove 22. The spring 24 is provided with Within the connecting groove 22, one end of the connecting plate 23 is fixedly connected to the end of the abutment block 23 by welding or snap-fit, and the other end is fixedly connected to the bottom of the connecting groove 22. When the spring 24 is in its natural state, the end of the abutment block 23 away from the spring 24 is in contact with the adjusting plate 15. That is, the adjusting plate 15 is pushed towards the center area of ​​the detection tube 14 under the elastic force of the spring 24. Adjacent adjusting plates 15 are connected by a polyurethane elastic plate 28. The polyurethane elastic plate 28 has good elasticity and wear resistance. Its two ends are fixedly connected to the edges of the two adjacent adjusting plates 15 respectively. During the material flow process, the polyurethane elastic plate 28 plays a buffering and limiting role for the relative movement between adjacent adjusting plates 15, preventing the adjusting plates 15 from being damaged due to violent shaking, and also helps to maintain a uniform spacing between the adjusting plates 15.

[0034] The elastic element 16 is provided with a detection unit 17 to detect the force applied by the material to the adjusting plate 15. Specifically, the detection unit 17 includes a slider 25 fixedly connected to the side wall of the abutment block 23 and a groove 26 opened in the inner wall of the connecting groove 22. The slider 25 is slidably connected in the groove 26. The slider 25 can be made of metal or plastic and is fixed to the side wall of the abutment block 23 by welding or bonding. The groove 26 extends along the axial direction of the connecting groove 22 and its width is adapted to the width of the slider 25 to ensure that the slider 25 can slide smoothly along the groove 26. A pressure sensor 27 connected to the control system 6 is fixedly connected to the inner wall of the groove 26. The pressure sensor 27 can be a miniature thin film pressure sensor 27 or a strain gauge pressure sensor 27 and is fixed to the inner wall of the groove 26 by bonding or embedding. Its signal line is led out through the wire hole opened on the detection tube 14 and electrically connected to the control system 6. When the spring 24 is in the natural state, the slider 25 and the pressure sensor 27 are separated from each other.

[0035] When the material flows through the detection tube 14, the flowing material exerts an impact force on the regulating plate 15, pushing the regulating plate 15 to move away from the center of the detection tube 14. The movement of the regulating plate 15 causes the abutment block 23 to slide along the connecting groove 22. The abutment block 23 compresses the spring 24, and at the same time, the abutment block 23 causes the slider 25 to slide along the slide groove 26. As slider 25 slides, it gradually approaches and eventually contacts pressure sensor 27, applying pressure to it. Pressure sensor 27 converts the detected pressure signal into an electrical signal and transmits it to control system 6. Based on the magnitude of the received pressure signal, control system 6 can determine the flow state and characteristics of the material in real time. When the material has good flowability and moderate moisture content, the impact force of the material on the regulating plate 15 is small, and the pressure value detected by pressure sensor 27 is small. When the material is too dry or lumpy, the impact force of the material on the regulating plate 15 increases, and the pressure value detected by pressure sensor 27 increases accordingly. Through this real-time detection mechanism, operators or control system 6 can promptly grasp the material status and take corresponding measures, such as adjusting mixing parameters or stopping material distribution, effectively avoiding the impact of poor material status on the quality of pipe forming.

[0036] The detection tube 14 is also equipped with a control valve 18 connected to the control system 6, and the feed pipe 13 is equipped with a control valve 19 connected to the control system 6. The control valves 18 and 19 can be electric butterfly valves or electric ball valves, and are installed on the detection tube 14 and the feed pipe 13. Their actuators are electrically connected to the control system 6. When the control system 6 judges that the material status is abnormal according to the signal of the pressure sensor 27, the control system 6 can control the control valves 18 and 19 to close, temporarily stopping the supply of material to the mixing cylinder 11 and the discharge pipe 20, so as to prevent material from entering the mixing cylinder 11 and unqualified material from entering the cavity.

[0037] The end of the detection tube 14 is connected to the discharge tube 20. The end of the discharge tube 20 is located above the cavity. The discharge tube 20 is made of wear-resistant steel pipe or engineering plastic pipe. One end of the discharge tube 20 is connected to the outlet end of the detection tube 14, and the other end extends to the top of the cavity between the outer mold and the mold core. After the material is detected by the detection tube 14, it falls into the cavity through the discharge tube 20. With the cooperation of the vibration system 3, the material is laid layer by layer and vibrated to form the tube.

[0038] A guide pipe 29 is installed on the discharge pipe 20. A storage tank 30 installed on the frame is provided at the end of the guide pipe 29. The guide pipe 29 is connected to the side wall of the discharge pipe 20. A guide assembly is provided between the discharge pipe 20 and the guide pipe 29 to guide the material in the discharge pipe 20 to the guide pipe 29.

[0039] Specifically, the diversion assembly includes a cylinder 31 mounted on the side wall of the discharge pipe 20 and controlled by the control system 6, a cylinder 32 mounted on the side wall of the diversion pipe 29 and controlled by the control system 6, a diversion plate 33 fixedly connected to the piston end of the cylinder 31, and a baffle 34 fixedly connected to the piston end of the cylinder 32. Both the cylinder 31 and the cylinder 32 can be standard single-acting or double-acting cylinders, which are fixed to the outer walls of the discharge pipe 20 and the diversion pipe 29 respectively by cylinder mounting seats. Their air passages are connected to a compressed air source through a solenoid valve, which is controlled by the control system 6. The diversion plate 33 and the baffle 34 can both be made of stainless steel plates, and their shapes are adapted to the inner cross-sections of the discharge pipe 20 and the diversion pipe 29 respectively.

[0040] The discharge pipe 20 has a through groove for the sliding of the guide plate 33, and the guide plate 33 always closes the through groove. The through groove is located on the side wall of the discharge pipe 20, and its position corresponds to the inlet end of the guide pipe 29. The size of the through groove is adapted to the cross-sectional size of the guide plate 33. When the cylinder 31 is in its shortest stroke, the guide plate 33 is located in the through groove. At this time, the material in the discharge pipe 20 flows normally towards the cavity along the discharge pipe 20. When the cylinder 31 is in its longest stroke, the end of the guide plate 33 away from the cylinder 31 passes through the through groove and extends into the discharge pipe 20 and fits against the inner wall of the discharge pipe 20. At this time, the guide plate 33 is located below the connection between the guide pipe 29 and the discharge pipe 20, that is, the material falling in the discharge pipe 20 is guided to the direction of the guide pipe 29, so that the material enters the storage tank 30 through the guide pipe 29.

[0041] A second through groove is provided on the side wall of the diversion pipe 29 for the baffle 34 to slide. The size of the second through groove is adapted to the cross-sectional size of the baffle 34. When the cylinder 32 is in its shortest stroke, the end of the baffle 34 away from the cylinder 32 is located in the second through groove. At this time, the material in the diversion pipe 29 flows normally towards the storage tank 30. When the cylinder 32 is in its longest stroke, the end of the baffle 34 away from the cylinder 32 passes through the second through groove and extends into the interior of the diversion pipe 29, fitting against the inner wall of the diversion pipe 29. At this time, the baffle 34 forms a flow-blocking surface in the diversion pipe 29, preventing the material in the diversion pipe 29 from continuing to flow downward, thus serving as a stop.

[0042] The working logic of the diversion component is as follows: During normal material feeding, the control system 6 controls control valve 18 and control valve 29 to open, and control cylinder 1 31 is at its shortest stroke and control cylinder 2 32 is at its longest stroke. At this time, the diversion plate 33 closes the through slot 1, and the baffle 34 closes the diversion pipe 29. The material falls normally into the cavity along the discharge pipe 20. When it is necessary to divert non-compliant material to the storage tank 30, the control system 6 controls control valve 18 and control valve 2 19 to close, to prevent the material from continuously flowing into the mixing cylinder 11 and to prevent the material in the mixing cylinder 11 from flowing out. At the same time, control cylinder 1 31 extends to its longest stroke and control cylinder 2 32 extends to its shortest stroke. At this time, the diversion plate 33 extends into the discharge pipe 20 to guide the material to the diversion pipe 29 and finally flows into the storage tank 30.

[0043] Unless otherwise specified, the materials and manufacturing methods used in this invention employ conventional techniques in the field. The load-bearing components, such as the base 1, outer mold, and mold core, are made of cast iron, cast steel, or high-quality carbon structural steel through casting or forging processes. The cover plate, base plate, and frame are made of steel plates through cutting, welding, and machining. The conveyor belt 7, feed hopper 8, guide hopper 9, mixing cylinder 11, detection pipe 14, discharge pipe 20, and drainage pipe 29 can be made of wear-resistant steel plates or engineering plastics through welding, injection molding, or extrusion molding processes. The components of the mixing assembly 12 are made of carbon structural steel or stainless steel through turning, milling, and welding processes. The spring 24 is made of spring steel through cold or hot rolling processes. The pressure sensor 27, control valve one 18, control valve two 19, cylinder one 31, and cylinder two 32 are all commercially available standard parts, fixedly connected to the corresponding components using conventional installation methods. Sealing between components can be achieved using conventional sealing elements such as rubber sealing rings and polytetrafluoroethylene (PTFE) gaskets.

[0044] The working process of the core-lifting type core mold vibration tube-making machine of the present invention is as follows: Step 1, Preparation Stage: The operator sets process parameters, including vibration frequency, amplitude, material placement speed, and core lifting speed, through the human-machine interface of the control system 6. The outer mold is installed in the slot of the base 1, the bottom plate is fixed to the bottom of the inner wall of the outer mold, the core is placed in the center of the outer mold and ensures that the two are concentric, the cover plate is placed on the top of the outer mold and the core to form a closed cavity between the outer mold and the core, and the pre-mixed concrete material is put into the hopper 8.

[0045] Step 2, Material Distribution and Mixing Stage: The control system 6 starts the drive motor 37 of the conveyor belt 7. The conveyor belt 7 transports the material falling from the feed hopper 8 to the end. The material falls from the end of the conveyor belt 7 into the guide hopper 9. In the guide hopper 9, it collides with the dispersing teeth 35. The clumps of material are broken up and enter the mixing cylinder 11 through the feed pipe 13. At the same time, the control system 6 starts the motor 37 of the stirring assembly 12. The motor 37 drives the connecting shaft 38 to rotate. The connecting shaft 38 drives the stirring rod 36 and the stirring teeth to rotate, so as to fully stir and mix the material in the mixing cylinder 11.

[0046] Step 3, Material Detection Stage: The uniformly mixed material enters the detection tube 14 from the outlet of the mixing cylinder 11. Inside the detection tube 14, the flowing material exerts an impact force on the adjusting plate 15, pushing the adjusting plate 15 to move. The adjusting plate 15 compresses the spring 24 through the abutment block 23 and drives the slider 25 to slide along the slide groove 26. The slider 25 contacts the pressure sensor 27 and applies pressure to the pressure sensor 27. The pressure sensor 27 transmits the pressure signal to the control system 6 in real time. The control system 6 judges the flow state and characteristics of the material based on the magnitude of the pressure signal. If the pressure signal is within the normal range, it indicates that the material is in good condition. The control system 6 keeps the control valve 18 open, and the material falls into the cavity through the discharge pipe 20. If the pressure signal is abnormal, it indicates that the material is in poor condition. The control system 6 can issue an alarm signal to remind the operator, or automatically control the control valve 18 and control valve 29 to close, pausing the material distribution. The material distribution will resume after the material condition is adjusted to normal.

[0047] Step 4, Vibration Molding Stage; As the material continuously falls into the cavity through the discharge pipe 20, the control system 6 starts the vibration generator of the vibration system 3. The vibration generator generates high-frequency vibration and transmits it to the concrete material in the cavity through the mold core. Under the action of vibration, the material gradually liquefies and compacts. As the material is laid and the vibration continues, the material in the cavity accumulates layer by layer and is compacted, and the pipe is gradually formed.

[0048] Step 5: Finishing of material distribution and diversion of excess material; When the material in the cavity is nearly full, the control system 6 controls the control valve 2 19 to close, preventing material from continuously flowing into the mixing cylinder 11.

[0049] Step Six: Demolding Stage; After the pipe is formed, the control system 6 stops the operation of the vibration system 3 and the material feeding system 5, and starts the lifting system 4. The lifting drive mechanism of the lifting system 4 drives the mold core and cover plate to move upward along the track, so that the mold core is slowly pulled out from the formed pipe. Then, the operator lifts the formed pipe together with the outer mold from the base 1 for subsequent curing and outer mold removal operations.

[0050] Step 7: Cyclic Operation; Reinstall the outer mold on base 1, fix the bottom plate, and reset the mold core and cover plate to start the production of the next pipe. Throughout the entire process, the control system 6 monitors and coordinates the operation of each system in real time to ensure the precise coordination of each process such as material feeding, vibration, detection, diversion, and demolding, so as to achieve efficient and high-quality automated pipe production.

[0051] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A core-lifting type mandrel vibration tube-making machine, including: The base (1) is equipped with a multi-stage damping mechanism to absorb high-frequency vibrations during operation; The mold system (2) includes an outer mold disposed on a base (1), a mold core serving as an inner mold, and a cover plate and a bottom plate for closing the outer mold, the top and bottom of the mold core, wherein a cavity is formed between the outer mold and the mold core for tube forming; A vibration system (3) is installed on the base (1) to vibrate the mold core; The lifting system (4) is equipped with a track that is compatible with the base (1) to drive the mold core and cover plate to move; The fabric feeding system (5) is equipped with a frame that is compatible with the base (1) for feeding the material into the cavity from above; The control system (6) is used to control the operation of the above systems; The fabric feeding system (5) is characterized by the following features: a conveyor belt (7) mounted on a frame and controlled by a control system (6), a feed hopper (8) mounted at the beginning of the conveyor belt (7), a guide hopper (9) mounted at the end of the conveyor belt (7), and a mixing device (10) mounted on the frame. The mixing device (10) includes a mixing cylinder (11) fixedly connected to the frame and a stirring assembly (12) disposed inside the mixing cylinder (11) and controlled by the control system (6). The discharge end of the guide hopper (9) and the mixing cylinder (11) are connected to each other through a feed pipe (13). A detection pipe (14) is provided at the end of the mixing cylinder (11). The detection tube (14) is transparent and has several adjusting plates (15) inside. The adjusting plates (15) are connected to the detection tube (14) through elastic elements (16). The elastic elements (16) are equipped with detection units (17) to detect the force applied by the material to the adjusting plates (15). The detection tube (14) is equipped with a control valve (18) connected to the control system (6). The feed tube (13) is equipped with a control valve (19) connected to the control system (6). The end of the detection tube (14) is connected to a discharge tube (20). The end of the discharge tube (20) is located above the cavity.

2. The core-lifting type core mold vibration tube-making machine according to claim 1, characterized in that: The elastic element (16) includes a connecting block (21) fixedly connected to the inner wall of the detection tube (14), a connecting groove (22) opened on the connecting block (21), an abutment block (23) fixedly connected to the side wall of the adjustment plate (15), and a spring (24) with one end connected to the abutment block (23) and the other end connected to the bottom of the connecting groove (22). When the spring (24) is in its natural state, the end of the abutment block (23) away from the spring (24) is in contact with the adjustment plate (15).

3. The core-lifting type core mold vibration tube-making machine according to claim 2, characterized in that: The detection unit (17) includes a slider (25) fixedly connected to the side wall of the abutment block (23) and a groove (26) opened on the inner wall of the connecting groove (22). The slider (25) is slidably connected in the groove (26). A pressure sensor (27) connected to the control system (6) is fixedly connected to the inner wall of the groove (26). When the spring (24) is in its natural state, the slider (25) and the pressure sensor (27) are separated from each other.

4. The core-lifting type core mold vibration tube-making machine according to claim 1, characterized in that: The two adjacent adjustment plates (15) are connected by a polyurethane elastic plate (28).

5. The core-lifting type core mold vibration tube-making machine according to claim 4, characterized in that: A guide pipe (29) is installed on the discharge pipe (20). A storage tank (30) installed on the frame is provided at the end of the guide pipe (29). A guide assembly is provided between the discharge pipe (20) and the guide pipe (29) to guide the material in the discharge pipe (20) to flow into the guide pipe (29).

6. The core-lifting type core mold vibration tube-making machine according to claim 1, characterized in that: The diversion assembly includes a cylinder 1 (31) mounted on the side wall of the discharge pipe (20) and controlled by the control system (6), a cylinder 2 (32) mounted on the side wall of the diversion pipe (29) and controlled by the control system (6), a diversion plate (33) fixedly connected to the piston end of cylinder 1 (31), and a baffle (34) fixedly connected to the piston end of cylinder 2 (32). The discharge pipe (20) has a through groove 1 for the diversion plate (33) to slide, and the diversion plate (33) always closes the through groove 1. When cylinder 1 (31) is in its shortest stroke, the diversion plate (33) is located in the through groove 1. When cylinder 1 (31) is in its longest stroke, the end of the guide plate (33) away from cylinder 1 (31) is in contact with the inner wall of the discharge pipe (20), and at this time the guide plate (33) is located below the connection between the guide pipe (29) and the discharge pipe (20). The side wall of the guide pipe (29) is provided with a through groove 2 for the baffle (34) to slide. When cylinder 2 (32) is in its shortest stroke, the end of the baffle (34) away from cylinder 2 (32) is located in the through groove 2. When cylinder 2 (32) is in its longest stroke, the end of the baffle (34) away from cylinder 2 (32) is in contact with the inner wall of the guide pipe (29).

7. The core-lifting type core mold vibration tube-making machine according to claim 1, characterized in that: The stirring assembly (12) includes a motor (37) fixedly connected to the side wall of the mixing cylinder (11) and controlled by the control system (6) and a connecting shaft (38) fixedly connected to the output end of the motor (37). The connecting shaft (38) extends laterally through the mixing cylinder (11) into its interior and is rotatably connected to the inner wall of the mixing cylinder (11). A plurality of stirring rods (36) are fixedly connected to the side wall of the connecting shaft (38). The plurality of stirring rods (36) are evenly distributed on the side wall of the connecting shaft (38), and a plurality of stirring teeth are fixedly connected to the side wall of the stirring rods (36).

8. The core-lifting type core mold vibration tube-making machine according to claim 1, characterized in that: A plurality of dispersing teeth (35) are fixedly connected to the inner wall of the feed hopper (9), and the plurality of dispersing teeth (35) are evenly distributed on the inner wall of the feed hopper (9).

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