CN117140904B - Forming device is used in production of double-walled bellows - Google Patents
Forming device is used in production of double-walled bellows Download PDFInfo
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- CN117140904B CN117140904B CN202311422399.8A CN202311422399A CN117140904B CN 117140904 B CN117140904 B CN 117140904B CN 202311422399 A CN202311422399 A CN 202311422399A CN 117140904 B CN117140904 B CN 117140904B
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- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 230000002452 interceptive effect Effects 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract description 5
- 229920001903 high density polyethylene Polymers 0.000 abstract description 5
- 239000004700 high-density polyethylene Substances 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 description 15
- 239000012768 molten material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention is suitable for the field of double-wall corrugated pipe production, and provides a forming device for double-wall corrugated pipe production, which is used for forming and processing molten plastic materials through working procedure circulation of an initial state, a material waiting state, a pressurizing state and a material discharging state. The control terminal automatically controls each device through the PLC in the control terminal. The production breaks away from the complicated manual control process, and the PLC with the interactive interface carries out accurate operation and control on equipment data, so that uniform, accurate and orderly feeding in the double-wall corrugated pipe production process is realized. The produced double-wall corrugated pipe product has no shrinking glue, and the produced black HDPE double-wall corrugated pipe has excellent appearance quality; meanwhile, the stress structure of the double-wall corrugated pipe product is ensured to be complete, and the service life of the double-wall corrugated pipe product is prolonged. The high quality of double wall bellows products has further led the industry to advance and develop towards higher demanding quality targets.
Description
Technical Field
The invention is suitable for the field of double-wall corrugated pipe production, and provides a forming device for double-wall corrugated pipe production.
Background
The double-wall corrugated polyethylene pipe is one kind of pipe with smooth inner wall and annular corrugated outer wall produced with high density polyethylene as main material and through the three processes of pipe forming, cutting and expanding, and is used widely in city water draining, sewage draining, etc. pipeline engineering, farm and other public places, farm and other water conservancy system engineering, golf course underground water permeating pipe network, underground pipeline protecting sleeve and communication cable protecting sleeve.
The production process of the double-wall corrugated pipe is that materials are extruded from an extruder to an extrusion die in a molten state, the materials are molded under the constraint of a molding module and a water jacket, the molded double-wall corrugated pipe is continuously conveyed forwards, and the formed double-wall corrugated pipe is conveyed to a cutting machine through a cooling water tank, and the cutting machine cuts the corrugated pipe meeting the technical requirements according to production requirements.
In the process that the extruder takes a rod shape in a molten state to an extrusion die, as the organic molten material expands with heat and contracts with cold after extrusion, a certain degree of gel shrinkage is generated at the joint of the horizontal section and the corrugated section of the corrugated pipe, and the joint of the horizontal section and the corrugated section is whitened due to gel shrinkage in the production process of the black HDPE double-wall corrugated pipe, so that the appearance quality is damaged; meanwhile, the stress at the glue shrinking position is damaged, the glue shrinking position is more easy to damage in use, and the double-wall corrugated pipe is gradually damaged along with the extension of the use time, so that the protection function is lost.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a forming device for producing a double-wall corrugated tube, which is intended to solve the problems set forth in the background art, and which includes a first extruder, a second extruder, a third extruder, and a control terminal; the first extruder is sequentially connected with a first front electromagnetic valve and an outer die through a pipeline, and the second extruder is sequentially connected with a second front electromagnetic valve and an inner die through a pipeline; the third extruder is connected with a first rear electromagnetic valve and a second rear electromagnetic valve in parallel through pipelines; the first rear electromagnetic valve is sequentially connected with a first supercharging device and a first switching valve through a pipeline; the second rear electromagnetic valve is sequentially connected with a second supercharging device and a second switching valve through pipelines; the first switch valve is connected in parallel to a connecting pipeline between the first front electromagnetic valve and the outer die through a pipeline; the second switch valve is connected in parallel with a connecting pipeline between the second front electromagnetic valve and the inner die through a pipeline.
Further, the control terminal comprises an interactive interface and an internal PLC, and the PLC is electrically connected with the interactive interface.
Further, a first front pressure sensor is arranged on a connecting pipeline of the first extruder and the first front electromagnetic valve; and a second front pressure sensor is arranged on a connecting pipeline of the second extruder and the second front electromagnetic valve, and the first front pressure sensor and the second front pressure sensor are electrically connected with a control terminal.
Further, a first meter is arranged on a connecting pipeline of the first extruder and the first front electromagnetic valve; and a second meter is arranged on a connecting pipeline of the second extruder and the second front electromagnetic valve, and the first meter and the second meter are electrically connected with a control terminal.
Further, a first rear pressure sensor is arranged on a connecting pipeline of the first front electromagnetic valve and the outer die; and a second rear pressure sensor is arranged on a connecting pipeline of the second front electromagnetic valve and the inner die, and the first rear pressure sensor and the second rear pressure sensor are electrically connected with a control terminal.
Further, the control terminal is electrically connected to the first extruder, the second extruder, the third extruder, the first front solenoid valve, the second front solenoid valve, the first rear solenoid valve, the second rear solenoid valve, the first switching valve, the second switching valve, the first supercharging device and the second supercharging device.
In summary, when the forming device for producing the double-wall corrugated pipe is actually used, the molten plastic material is formed and processed through the working procedure circulation of an initial state, a material waiting state, a pressurizing state and a discharging state. The control terminal automatically controls each device through the PLC in the control terminal. The production breaks away from the complicated manual control process, and the PLC with the interactive interface carries out accurate operation and control on equipment data, so that uniform, accurate and orderly feeding in the double-wall corrugated pipe production process is realized. The produced double-wall corrugated pipe product has no shrinking glue, and the produced black HDPE double-wall corrugated pipe has excellent appearance quality; meanwhile, the stress structure of the double-wall corrugated pipe product is ensured to be complete, and the service life of the double-wall corrugated pipe product is prolonged. The high quality of double wall bellows products has further led the industry to advance and develop towards higher demanding quality targets.
Drawings
FIG. 1 is a schematic diagram of a device connection;
FIG. 2 is a schematic diagram of an electrical connection structure between a control terminal and a device;
in the figure: 1-an outer mold; 11-a first extruder; 12-a first front pressure sensor; 13-a first meter; 14-a first front solenoid valve; 15-a first rear pressure sensor; 2-an inner mold; 21-a second extruder; 22-a second front pressure sensor; 23-a second meter; 24-a second front solenoid valve; 25-a second rear pressure sensor; 3-a third extruder; 311-a first rear solenoid valve; 312-a first supercharging device; 313-a first switching valve; 321-a second rear solenoid valve; 322-a second supercharging device; 323-a second switching valve; 4-control terminal.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the present invention aims to provide a forming device for producing a double-wall corrugated pipe, which comprises a first extruder 11, a second extruder 21, a third extruder 3 and a control terminal 4; the first extruder 11, the second extruder 21 and the third extruder 3 are double-screw extruders, and compared with a single-screw extruder, the double-screw plastic extruder can better control the factors such as plastic material temperature, material dispersion, exhaust dehydration and the like, so that the quality of the produced double-wall corrugated pipe is more stable, the extrusion amount and the extrusion pressure are increased, and the double-wall corrugated pipe has advantages in manufacturing of medium-and-large-sized double-wall corrugated pipes. The control terminal 4 internally comprises an automatic control system for controlling the start and stop of each device and real parameters.
The first extruder 11 is sequentially connected with a first front electromagnetic valve 14 and the outer die 1 through a pipeline, and the second extruder 21 is sequentially connected with a second front electromagnetic valve 24 and the inner die 2 through a pipeline; the inner die 1 and the outer die 2 are respectively internally provided with a pressure sensor, and the pressure sensors can detect the pressure value of the internal materials and send the pressure value to the control terminal 4; the first extruder 11 and the second extruder 21 are respectively connected with a first front electromagnetic valve 14 and a second front electromagnetic valve 24, the first front electromagnetic valve 14 and the second front electromagnetic valve 24 are electromagnetic controlled valves, and the opening and the closing can be controlled by an external electrically connected control system. When the injection of the outer die 1 or the inner die 2 is completed, the control system detects a corresponding finishing signal and can rapidly control and close the first front electromagnetic valve 14 or the second front electromagnetic valve 24 to prevent the die from overflowing.
The third extruder 3 is connected with a first rear electromagnetic valve 311 and a second rear electromagnetic valve 321 in parallel through pipelines; the first rear electromagnetic valve 311 is sequentially connected with a first supercharging device 312 and a first switch valve 313 through pipelines; the second rear electromagnetic valve 321 is sequentially connected with a second supercharging device 322 and a second switching valve 323 through a pipeline; specifically, the discharging of the third extruder 3 is divided into two branches, and the first rear electromagnetic valve 311 and the second rear electromagnetic valve 321 are respectively installed on the two branches through pipelines, so as to timely block the third extruder 3 from injecting a lot of molten materials into the branches. The first pressurizing device 312 and the second pressurizing device 322 are extrusion type pressurizing devices, and the first pressurizing device 312 and the second pressurizing device 322 mainly store materials of the third extruder 3 and continuously pressurize and feed the outer die 1 and the inner die 2 in an extrusion mode. In the device, materials in the first pressurizing device 312 and the second pressurizing device 322 are supplied by the third extruder 3, and pressure sensors are arranged on connecting pipelines between the third extruder 3 and the first pressurizing device 312 and connecting pipelines between the third extruder 3 and the second pressurizing device 322, and are electrically connected with the control terminal 4 and used for determining whether the materials in the first pressurizing device 312 and the second pressurizing device 322 are completely filled or not and sending signals to the control terminal 4. The extrusion type supercharger of the first supercharging device 312 and the second supercharging device 322 is a prior art, such as the chinese patent publication No. CN108907135a published in 2018, 11, 30, and an extrusion cast supercharging structure and an extrusion feeding method, and the internal structure and principle of the extrusion type supercharger are not described in detail herein.
The first switch valve 313 is connected in parallel with a connecting pipeline between the first front electromagnetic valve 14 and the outer die 1 through a pipeline; the second switching valve 323 is connected in parallel to a connecting pipe between the second front solenoid valve 24 and the inner die 2 through a pipe. The first switch valve 313 and the second switch valve 323 are controlled solenoid valves, and since the first pressurizing device 312 and the second pressurizing device 322 continuously provide feeding pressure for the outer mold 1 and the inner mold 2, as the material in the outer mold 1 and the inner mold 2 is gradually cooled and shaped, the material pressure in the pipeline and the outer mold 1 or the inner mold 2 reaches a constant value, and at this time, the corresponding first switch valve 313 and second switch valve 323 are turned off, so as to maintain the material pressure in the pipeline and the outer mold 1 or the inner mold 2. After the first switch valve 313 or the second switch valve 323 is closed, the first pressurizing device 312 or the second pressurizing device 322 is depressurized, and the third extruder 3 performs extrusion feeding to the first pressurizing device 312 and the second pressurizing device 322.
Preferably, the control terminal 4 comprises a PLC with an analog input and an analog output module. The PLC is electrically connected with an interactive interface; each electrical unit is connected by PCIE (high speed serial bus). An administrator can uniformly manage each device of the device through the interaction interface, and monitor the fault state in real time to ensure the stable operation of the device.
Preferably, a first front pressure sensor 12 is installed on a connecting pipeline between the first extruder 11 and the first front electromagnetic valve 14; a second front pressure sensor 22 is installed on a connecting pipeline of the second extruder 21 and the second front electromagnetic valve 24, and the first front pressure sensor 12 and the second front pressure sensor 22 are electrically connected with the control terminal 4. The first front pressure sensor 12 and the second front pressure sensor 22 are respectively used for measuring the material pressure of the outer die 1 and the inner die 2 and corresponding pipelines, when molten materials are filled in the outer die 1 and the inner die 2, the pressure degree of the first front pressure sensor 12 and the second front pressure sensor 22 is smaller, after the materials are filled, the materials are rapidly increased along with the continuous extrusion pressure of the first extruder 11 and the second extruder 21, at the moment, the first front pressure sensor 12 and the second front pressure sensor 22 send signals to the control terminal 4, and the control terminal 4 then controls the first extruder 11 and the second extruder 21 to stop extruding the materials. Meanwhile, the control terminal 4 controls the running states of the first extruder 11 and the second extruder 21 through real parameters and negative feedback linear parameters of the first front pressure sensor 12 and the second front pressure sensor 22, and accurately controls the material pressure values of the outer die 1 and the inner die 2.
Preferably, a first meter 13 is installed on a connecting pipeline between the first extruder 11 and the first front electromagnetic valve 14; a second meter 23 is installed on a connecting pipeline between the second extruder 21 and the second front electromagnetic valve 24, and the first meter 13 and the second meter 23 are electrically connected with the control terminal 4. The first meter 13 and the second meter 23 are respectively used for measuring the extrusion amount of materials of the first extruder 11 and the second extruder 21, and sending data to the interactive interface of the control terminal 4 in real time, so that an administrator can accurately control the production process of the product.
Preferably, a first rear pressure sensor 15 is installed on a connecting pipeline between the first front electromagnetic valve 14 and the outer die 1; a second rear pressure sensor 25 is installed on a connecting pipeline between the second front electromagnetic valve 24 and the inner die 2, and the first rear pressure sensor 15 and the second rear pressure sensor 25 are electrically connected with the control terminal 4. On the one hand, the first rear pressure sensor 15 and the second rear pressure sensor 25 are used for measuring the pressure of the material in the mold in the state of waiting, detecting the pressure reading of the material in the state of waiting in real time and sending the pressure reading to the control terminal 4, since the extrusion amount of the material extruded into the mold is given by the value when the control terminal 4 is set with real parameters, the readings of the first rear pressure sensor 15 and the second rear pressure sensor 25 gradually decrease and tend to be stable along with the diffusion of the material in the mold. When stable, the control terminal 4 controls each device to enter a supercharging state. On the other hand, in the pressurizing state, the first rear pressure sensor 15 and the second rear pressure sensor 25 detect the pressurizing state of the first pressurizing device 312 or the second pressurizing device 322 in real time, and the pressure maintenance of the mold material in the pressurizing state is realized by logic control, so that the product is fed uniformly.
Preferably, the control terminal 4 is electrically connected to the first extruder 11, the second extruder 21, the third extruder 3, the first front solenoid valve 14, the second front solenoid valve 24, the first rear solenoid valve 311, the second rear solenoid valve 321, the first switching valve 313, the second switching valve 323, the first pressurizing device 312, and the second pressurizing device 322.
The operation principle of the forming device for producing the double-wall corrugated pipe is as follows, and when the molten materials of the outer die 1 and the inner die 2 are filled, the control terminal 4 controls each device to be in an initial state.
In the initial state, the first extruder 11 and the second extruder 21 are operated, the third extruder 3 is in standby, the first front electromagnetic valve 14 and the second front electromagnetic valve 24 are opened, the first switching valve 313 and the second switching valve 323 are closed, the first supercharging device 312 and the second supercharging device 322 are in standby, and the first rear electromagnetic valve 311 and the second rear electromagnetic valve 321 are closed; at this time, the control terminal 4 controls the operation of the first extruder 11 and the second extruder 21, and the molten materials are injected into the outer die 1 and the inner die 2, respectively. After the material injection is completed, the control terminal 4 detects that the material pressure in the outer mold 1 and the inner mold 2 rises, and at the moment, the control terminal 4 controls each device to enter a material waiting state.
The waiting state is that the first extruder 11 and the second extruder 21 are in standby, the third extruder 3 is operated, the first front electromagnetic valve 14 and the second front electromagnetic valve 24 are closed, the first switch valve 313 and the second switch valve 323 are closed, the first supercharging device 312 and the second supercharging device 322 are in standby, and the first rear electromagnetic valve 311 and the second rear electromagnetic valve 321 are opened; at this time, since the first front electromagnetic valve 14 and the second front electromagnetic valve 24 still have certain material pressure in the outer die 1 and the inner die 2, the materials in the dies are in a diffusion state, and the materials are gradually formed and fed in a preliminary manner along with the duration of diffusion. At the same time, the first rear electromagnetic valve 311 and the second rear electromagnetic valve 321 are opened, the third extruder 3 is operated, the first pressurizing device 312 and the second pressurizing device 322 are filled with molten materials, and the molten materials are stored in the first pressurizing device 312 and the second pressurizing device 322 to wait for pressurizing the outer die 1 and the inner die 2 subsequently. When the third extruder 3 is completely injected, the control terminal 4 detects that the first pressurizing device 312 and the second pressurizing device 322 are completely stored, and at this time, the control terminal 4 controls each device to enter a pressurizing state.
The pressurizing state is that the first extruder 11, the second extruder 21 and the third extruder 3 stand by, the first front electromagnetic valve 14 and the second front electromagnetic valve 24 are closed, the first switch valve 313 and the second switch valve 323 are opened, the first pressurizing device 312 and the second pressurizing device 322 are operated, and the first rear electromagnetic valve 311 and the second rear electromagnetic valve 321 are closed; at this time, the first pressurizing device 312 and the second pressurizing device 322 push the materials inside the first pressurizing device 312 and the second pressurizing device to the outer die 1 and the inner die 2 respectively, so that the pressure of the materials in the die rises, the gradually formed double-wall corrugated pipe is fed, the temperature of one end, far away from the feeding port of the die, of the inside of the die drops faster, the forming speed is faster, the corrugated pipe is gradually fed while being gradually formed, and the first pressurizing device 312 and the second pressurizing device 322 always maintain the pressure of the materials in the die and the corresponding pipeline in the feeding process. When the specified time is reached or after the mold reaches the specified temperature. The control terminal 4 controls each device to enter a discharging state.
The discharging state is that the first extruder 11, the second extruder 21 and the third extruder 3 stand by, the first front electromagnetic valve 14 and the second front electromagnetic valve 24 are closed, the first switch valve 313 and the second switch valve 323 are opened, the first supercharging device 312 and the second supercharging device 322 stand by, and the first rear electromagnetic valve 311 and the second rear electromagnetic valve 321 are closed; at this time, the pressure of the material in the pipeline is relieved, the compressed material slightly flows back into the first supercharging device 312 and the second supercharging device 322, the outer die 1 and the inner die 2 are opened for unloading after the pressure relief, and after the unloading is completed, the control terminal 4 controls each device to enter an initial state, so that the circulation is realized.
In summary, when the forming device for producing the double-wall corrugated pipe is actually used, the molten plastic material is formed and processed through the working procedure circulation of an initial state, a material waiting state, a pressurizing state and a discharging state. The control terminal 4 automatically controls each device by its internal PLC. The production breaks away from the complicated manual control process, and a PLC (PCIE bus link) with an interactive interface carries out accurate operation and control on equipment data (full duplex communication between equipment endpoints), so that uniform, accurate and orderly feeding in the double-wall corrugated pipe production process is realized. The produced double-wall corrugated pipe product has no shrinking glue, and the produced black HDPE double-wall corrugated pipe has excellent appearance quality; meanwhile, the stress structure of the double-wall corrugated pipe product is ensured to be complete, and the service life of the double-wall corrugated pipe product is prolonged. The high quality of double wall bellows products has further led the industry to advance and develop towards higher demanding quality targets.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. The forming device for producing the double-wall corrugated pipe is characterized by comprising a first extruder (11), a second extruder (21), a third extruder (3) and a control terminal (4);
the first extruder (11) is sequentially connected with a first front electromagnetic valve (14) and an outer die (1) through a pipeline, and the second extruder (21) is sequentially connected with a second front electromagnetic valve (24) and an inner die (2) through a pipeline;
the third extruder (3) is connected with a first rear electromagnetic valve (311) and a second rear electromagnetic valve (321) in parallel through pipelines;
the first rear electromagnetic valve (311) is sequentially connected with a first supercharging device (312) and a first switching valve (313) through pipelines;
the second rear electromagnetic valve (321) is sequentially connected with a second supercharging device (322) and a second switching valve (323) through pipelines;
the first switch valve (313) is connected in parallel with a connecting pipeline between the first front electromagnetic valve (14) and the outer die (1) through a pipeline; the second switch valve (323) is connected in parallel with a connecting pipeline between the second front electromagnetic valve (24) and the inner die (2) through a pipeline; the control terminal (4) comprises an interactive interface and an internal PLC, and the PLC is electrically connected with the interactive interface; a first front pressure sensor (12) is arranged on a connecting pipeline of the first extruder (11) and the first front electromagnetic valve (14); a second front pressure sensor (22) is arranged on a connecting pipeline of the second extruder (21) and the second front electromagnetic valve (24), and the first front pressure sensor (12) and the second front pressure sensor (22) are electrically connected with a control terminal (4); a first metering device (13) is arranged on a connecting pipeline between the first extruder (11) and the first front electromagnetic valve (14); a second metering device (23) is arranged on a connecting pipeline of the second extruder (21) and the second front electromagnetic valve (24), and the first metering device (13) and the second metering device (23) are electrically connected with a control terminal (4); a first rear pressure sensor (15) is arranged on a connecting pipeline between the first front electromagnetic valve (14) and the outer die (1); a second rear pressure sensor (25) is arranged on a connecting pipeline between the second front electromagnetic valve (24) and the inner die (2), and the first rear pressure sensor (15) and the second rear pressure sensor (25) are electrically connected with the control terminal (4);
the control terminal (4) is electrically connected with the first extruder (11), the second extruder (21), the third extruder (3), the first front electromagnetic valve (14), the second front electromagnetic valve (24), the first rear electromagnetic valve (311), the second rear electromagnetic valve (321), the first switch valve (313), the second switch valve (323), the first supercharging device (312) and the second supercharging device (322);
the application method of the forming device for producing the double-wall corrugated pipe comprises the following steps of:
s1, in an initial state;
the first extruder (11) and the second extruder (21) are operated, and the third extruder (3) stands by;
the first front electromagnetic valve (14) and the second front electromagnetic valve (24) are opened, and materials are injected into the outer die (1) and the inner die (2);
the first switch valve (313), the second switch valve (323), the first rear solenoid valve (311) and the second rear solenoid valve (321) are closed;
the first supercharging device (312) and the second supercharging device (322) are standby;
after the material injection is completed, the control terminal (4) detects that the material pressure in the outer mold (1) and the inner mold (2) rises, and at the moment, the control terminal (4) controls each device to enter a material waiting state;
s2, when the material is in a material waiting state, the first extruder (11) and the second extruder (21) are in standby;
the first (14) and second (24) front solenoid valves are closed; the material pressure between the first front electromagnetic valve (14) and the second front electromagnetic valve (24) and the outer die (1) and the inner die (2) carries out preliminary feeding on the material in the outer die (1) and the inner die (2);
the first switching valve (313) and the second switching valve (323) are closed;
the first rear electromagnetic valve (311) and the second rear electromagnetic valve (321) are opened, the third extruder (3) operates, and materials are injected into the first pressurizing device (312) and the second pressurizing device (322);
the first supercharging device (312) and the second supercharging device (322) are standby; the control terminal (4) detects that the first supercharging device (312) and the second supercharging device (322) are completely stored, and at the moment, the control terminal (4) controls all equipment to enter a supercharging state;
s3, in a pressurizing state, the first extruder (11), the second extruder (21) and the third extruder (3) are standby;
the first front solenoid valve (14), the second front solenoid valve (24), the first rear solenoid valve (311) and the second rear solenoid valve (321) are closed;
the first switching valve (313) and the second switching valve (323) are opened;
the first pressurizing device (312) and the second pressurizing device (322) are operated to feed the double-wall corrugated pipe which is gradually formed;
when the specified time is reached, the control terminal (4) controls each device to enter a discharging state;
s4, in a discharging state, the first extruder (11), the second extruder (21) and the third extruder (3) are standby;
the first front solenoid valve (14), the second front solenoid valve (24), the first rear solenoid valve (311) and the second rear solenoid valve (321) are closed;
the first switching valve (313) and the second switching valve (323) are opened;
the first supercharging device (312) and the second supercharging device (322) are standby;
at the moment, the pressure of the materials in the pipeline is relieved, the compressed materials slightly flow back to the inside of the first supercharging device (312) and the second supercharging device (322), the outer die (1) and the inner die (2) are opened for discharging after the pressure relief, and the control terminal (4) controls all the devices to enter an initial state after the discharging is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311422399.8A CN117140904B (en) | 2023-10-31 | 2023-10-31 | Forming device is used in production of double-walled bellows |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203172039U (en) * | 2013-03-14 | 2013-09-04 | 广东威立瑞科技有限公司 | Industrial plastic pipe production line |
| CN107002659A (en) * | 2014-06-25 | 2017-08-01 | 森塞拉能源公司 | Bending device, Linear Rotation converter and system |
| CN109501196A (en) * | 2018-12-29 | 2019-03-22 | 苏州金纬机械制造有限公司 | The production equipment of double-wall corrugated pipe |
| CN216579107U (en) * | 2021-12-16 | 2022-05-24 | 常州金纬国胜管道设备有限公司 | Double-wall corrugated pipe extrusion molding device |
| CN217169653U (en) * | 2022-05-06 | 2022-08-12 | 潍坊铭舜机械有限公司 | Extrusion system for manufacturing double-wall corrugated pipe |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203172039U (en) * | 2013-03-14 | 2013-09-04 | 广东威立瑞科技有限公司 | Industrial plastic pipe production line |
| CN107002659A (en) * | 2014-06-25 | 2017-08-01 | 森塞拉能源公司 | Bending device, Linear Rotation converter and system |
| CN109501196A (en) * | 2018-12-29 | 2019-03-22 | 苏州金纬机械制造有限公司 | The production equipment of double-wall corrugated pipe |
| CN216579107U (en) * | 2021-12-16 | 2022-05-24 | 常州金纬国胜管道设备有限公司 | Double-wall corrugated pipe extrusion molding device |
| CN217169653U (en) * | 2022-05-06 | 2022-08-12 | 潍坊铭舜机械有限公司 | Extrusion system for manufacturing double-wall corrugated pipe |
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| CN117140904A (en) | 2023-12-01 |
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