CN117245879A - Polytetrafluoroethylene pipe forming device and method - Google Patents
Polytetrafluoroethylene pipe forming device and method Download PDFInfo
- Publication number
- CN117245879A CN117245879A CN202311514740.2A CN202311514740A CN117245879A CN 117245879 A CN117245879 A CN 117245879A CN 202311514740 A CN202311514740 A CN 202311514740A CN 117245879 A CN117245879 A CN 117245879A
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- adjusting
- cooling
- installation
- fixedly connected
- extrusion head
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- -1 Polytetrafluoroethylene Polymers 0.000 title claims abstract description 57
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 57
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 72
- 238000009434 installation Methods 0.000 claims abstract description 57
- 238000001125 extrusion Methods 0.000 claims abstract description 49
- 239000000498 cooling water Substances 0.000 claims abstract description 28
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 230000002195 synergetic effect Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000006185 dispersion Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 6
- 238000004140 cleaning Methods 0.000 claims 1
- 238000013461 design Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002002 slurry 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/256—Exchangeable extruder parts
- B29C48/2566—Die parts
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
-
- 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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a polytetrafluoroethylene tube forming device and a polytetrafluoroethylene tube forming method, which relate to the field of tube production equipment and comprise an extruder main body, a cooling tank, a cooling water pump, a pressure sensor, an installation adjusting mechanism and a cooling synergistic mechanism; the cooling groove is arranged in front of the extruder main body; the cooling water pump is fixedly connected to the front of the cooling tank; the pressure sensor is fixedly connected to the front end above the extruder main body and is in communication connection with an external control system; the installation adjusting mechanism is arranged at the front end of the extruder main body; the cooling synergistic mechanism is arranged in the cooling tank, so that the pressure in the extrusion process is monitored and regulated in real time, the pressure is ensured to be always in a preset range, the molding quality of the polytetrafluoroethylene pipe is improved, and the problem that the production quality of the polytetrafluoroethylene pipe is affected by the extrusion pressure change of the polytetrafluoroethylene raw material at the extrusion head position when the existing polytetrafluoroethylene raw material is extruded is solved.
Description
Technical Field
The invention relates to the technical field of pipe production equipment, in particular to a polytetrafluoroethylene pipe molding device and method.
Background
The polytetrafluoroethylene pipe is a high-performance plastic pipe, when the polytetrafluoroethylene pipe is produced, an extruder is generally required to be used for producing the polytetrafluoroethylene pipe, a worker puts polytetrafluoroethylene raw materials into the extruder, heats the polytetrafluoroethylene raw materials through the inside of the extruder to enable the polytetrafluoroethylene to be in a fluid state, then conveys the polytetrafluoroethylene raw materials through a screw conveyer, extrudes the polytetrafluoroethylene raw materials through the extruder, and extrudes the polytetrafluoroethylene raw materials through an extrusion head to be molded.
The prior publication number is: the invention discloses a polytetrafluoroethylene tube processing production device and a polytetrafluoroethylene tube processing production method, wherein the CN116512649A processing production device comprises the following steps: the operation bed body comprises a rotation driving source arranged at the side part of the operation bed body, a mold roller transversely and rotatably arranged in the operation bed body and a transmission piece; the forming unit is arranged in the operation bed body, and an adjusting piece is arranged on the side surface of the pretreatment bin; and the shaping unit is arranged at the side part of the shaping unit. Through the restraint of the bottom curved half pipe and the top curved half pipe, the follow-up steel wire is limited at the middle part of the top surface of the polytetrafluoroethylene film strip, and then the rotary driving source is started, so that the die roller rotates, the driving part drives the forming unit and the shaping unit to move, the steel wire and the polytetrafluoroethylene film strip are covered on the surface of the primary winding polytetrafluoroethylene film strip, the winding interlayer forming of the polytetrafluoroethylene film strip on the steel wire is realized, and the steel wire is enabled to improve the forming strength of the polytetrafluoroethylene film strip pipe.
However, when the existing polytetrafluoroethylene raw material is extruded, a certain gap exists between the polytetrafluoroethylene raw material and the spiral conveying slurry, so that when the polytetrafluoroethylene raw material is extruded, the extrusion pressure of the polytetrafluoroethylene raw material at the extrusion head position changes, and the production quality of the polytetrafluoroethylene pipe is affected.
Disclosure of Invention
In view of the above, the invention provides a polytetrafluoroethylene tube molding device and a polytetrafluoroethylene tube molding method, which can realize real-time monitoring and adjustment of pressure in an extrusion process, and ensure that the pressure is always in a preset range, thereby improving the molding quality of polytetrafluoroethylene tubes.
The invention provides a polytetrafluoroethylene tube forming device and method, which have the purposes and effects of comprising an extruder main body, a connecting die, an extrusion head, a cooling piece, a cooling tank, a cooling water pump, a pressure sensor, an installation adjusting mechanism and a cooling synergistic mechanism;
the connecting die is fixedly connected to the front end of the extruder main body, and threaded hole structures are arranged on the left side and the right side of the rear end of the connecting die;
the extrusion head is arranged in front of the connecting die;
the cooling piece is arranged below the extrusion head;
the cooling groove is arranged in front of the extruder main body, the cooling piece is communicated with the cooling groove through a pipeline, and the upper end of the cooling groove is connected with the cover plate through a bolt;
the cooling water pump is fixedly connected in front of the cooling tank, a water inlet pipe of the cooling water pump is communicated with the inside of the cooling tank, and a water outlet pipe of the cooling water pump is communicated with the cooling piece;
the pressure sensor is fixedly connected to the front end above the extruder main body and is in communication connection with an external control system;
the installation adjusting mechanism is arranged at the front end of the extruder main body;
the cooling synergistic mechanism is arranged in the cooling tank.
Further, the installation adjustment mechanism includes: the installation assembly, the installation locating pin and the installation locking bolt;
the mounting assembly is of a semicircular structure and is fixedly connected to the front end of the extruder main body, and two groups of positioning hole structures are arranged at the lower end of the mounting assembly;
the two groups of installation positioning pins are respectively and fixedly connected below the connecting die and are respectively arranged in the installation assembly;
the installation locking bolts are arranged in two groups, the two groups of installation locking bolts are respectively connected to the left side and the right side of the installation assembly in a threaded mode, and the inner sides of the two groups of installation locking bolts are connected to the inside of the threaded holes of the connecting die in a threaded mode.
Further, the installation adjustment mechanism further comprises: an adjusting connecting piece and an adjusting sliding block;
the adjusting connecting piece is fixedly connected to the front end above the connecting die, and a rectangular chute structure is arranged in the adjusting connecting piece;
the adjusting slide block is fixedly connected above the extrusion head, the adjusting slide block is slidably connected inside a sliding groove of the adjusting connecting piece, and a rack structure is arranged on the left side of the adjusting slide block.
Further, the installation adjustment mechanism further comprises: an adjusting gear, an adjusting hand wheel and an adjusting bolt;
the adjusting gear is rotationally connected inside the sliding groove of the adjusting connecting piece, and is meshed with the rack structure of the adjusting sliding block;
the adjusting hand wheel is coaxially and fixedly connected above the adjusting gear;
the adjusting bolt is in threaded connection above the adjusting connecting piece, and the lower end of the adjusting bolt is in friction contact with the adjusting slide block.
Further, the installation adjustment mechanism further comprises: a spiral channel;
the spiral channel is of a spiral groove structure and is arranged in the connecting die.
Further, the installation adjustment mechanism further comprises: the device comprises an adjusting motor, an adjusting hydraulic cylinder, an adjusting connecting rod and an adjusting shunt;
the adjusting motor is fixedly connected to the front of the right end of the extruder main body and is electrically connected with an external control system;
the adjusting hydraulic cylinder is fixedly connected in front of the right end of the extruder main body and is electrically connected with an external control system
The adjusting connecting rod is fixedly connected to the front end of a piston rod of the adjusting hydraulic cylinder, and is slidably connected to the right end of the connecting die;
the adjusting flow divider is of a conical structure, the adjusting flow divider is connected inside the connecting die in a sliding mode, and the right end of the adjusting flow divider is fixedly connected with the adjusting connecting rod.
Further, the installation adjustment mechanism further comprises: the device comprises an adjusting driving worm wheel, an adjusting driving worm and an adjusting baffle;
the adjusting driving worm wheel is rotationally connected to the rear end of the adjusting hydraulic cylinder, and a threaded hole structure is arranged in the middle of the adjusting driving worm wheel;
the adjusting driving worm is coaxially and fixedly connected to the left side of the rotating shaft of the adjusting motor, and is meshed with the adjusting driving worm wheel;
the adjusting baffle is slidably connected in the adjusting hydraulic cylinder, a piston structure is arranged at the front end of the adjusting baffle, and the adjusting baffle is in threaded connection in a threaded hole of the adjusting driving worm wheel.
Further, the cooling synergistic mechanism comprises: a heat dissipation fan and a dispersion water wheel;
the cooling fans are provided with a plurality of groups, and the plurality of groups of cooling fans are respectively and fixedly connected above the cover plate of the cooling groove;
the water distribution wheels are provided with a plurality of groups, and the plurality of groups of water distribution wheels are respectively connected inside the water inlet pipe and the water outlet pipe of the cooling water pump in a rotating way.
Further, the cooling synergistic mechanism further comprises: a partition plate;
the division plates are provided with a plurality of groups, and the division plates are respectively and fixedly connected in the cooling groove.
The beneficial effects are that:
according to the invention, through the arrangement of the installation adjusting mechanism, when the extrusion head is installed, the extrusion head is inserted into the positioning groove of the extruder through the positioning hole on the die, the extrusion head is positioned during installation, finally, the extrusion head is fixed by using the bolt, the installation and the disassembly of the extrusion head are facilitated, the replacement and the maintenance of the extrusion head are enabled to be faster, so that the forming speed is indirectly improved, simultaneously, when the adjustment between the extrusion head and the die is required, the hand wheel is rotated to drive the gear to rotate, the gear is rotated to drive the sliding block to move, the sliding block is moved to drive the extrusion head to move, the adjustment of the relative positions of the extrusion head and the die is realized at the moment, so that the molding precision of polytetrafluoroethylene pipe is ensured, when the pressure is changed, the worm wheel is detected by the pressure sensor, the motor is started through the control system, the rotating shaft of the motor drives the worm to rotate, the adjusting baffle is driven to move in the hydraulic cylinder, the change of the stroke of the hydraulic cylinder is realized, the real-time monitoring and the adjustment of the pressure in the extrusion process are realized, and the pressure is always within the preset range, so that the molding quality of polytetrafluoroethylene pipe is improved.
According to the cooling efficiency-increasing mechanism, after the polytetrafluoroethylene tube is extruded into the cooling groove, the flow speed of cooling water in the cooling groove is increased through the partition plate, the cooling effect on the polytetrafluoroethylene tube is guaranteed, meanwhile, the water wheels are arranged in the cooling pipeline, the cooling water is thrown to the inner wall of the pipeline through rotation of the water wheels, the cooling water is guaranteed to be fully contacted with the pipeline, and the cooling effect on the polytetrafluoroethylene tube is guaranteed.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings described below are only for illustration of some embodiments of the invention and are not intended to limit the invention.
In the drawings:
fig. 1 is a schematic overall structure of an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of the mounting dowel according to an embodiment of the present invention.
Fig. 3 is a schematic overall sectional structure of an embodiment of the present invention.
Fig. 4 is a schematic view of the structure of the partition plate according to the embodiment of the present invention.
Fig. 5 is a schematic view of an adjustment drive worm gear configuration of an embodiment of the invention.
Fig. 6 is a schematic view of the installation adjusting mechanism of the embodiment of the present invention.
Fig. 7 is a schematic view of an adjusting slider structure according to an embodiment of the present invention.
FIG. 8 is a schematic cross-sectional structural view of a mounting adjustment mechanism of an embodiment of the present invention.
List of reference numerals
1. An extruder body; 101. mounting the assembly; 102. installing a positioning pin; 103. installing a locking bolt; 104. adjusting the connecting piece; 105. an adjusting slide block; 106. an adjusting gear; 107. an adjusting hand wheel; 108. an adjusting bolt; 109. a spiral channel; 110. adjusting a motor; 111. adjusting a hydraulic cylinder; 112. adjusting the connecting rod; 113. adjusting the shunt; 114. adjusting a drive worm wheel; 115. adjusting a driving worm; 116. adjusting a baffle; 2. connecting a die; 3. an extrusion head; 4. a cooling member; 5. a cooling tank; 501. a heat dissipation fan; 502. a dispersion water wheel; 503. a partition plate; 6. a cooling water pump; 7. a pressure sensor.
Detailed Description
Embodiment one: please refer to fig. 1 to 8:
the invention provides a polytetrafluoroethylene tube forming device and a polytetrafluoroethylene tube forming method, comprising an extruder main body 1, a connecting die 2, an extrusion head 3, a cooling piece 4, a cooling groove 5, a cooling water pump 6, a pressure sensor 7 and an installation adjusting mechanism;
the connecting die 2 is fixedly connected to the front end of the extruder main body 1, and threaded hole structures are arranged on the left side and the right side of the rear end of the connecting die 2;
the extrusion head 3 is arranged in front of the connection die 2;
the cooling element 4 is arranged below the extrusion head 3;
the cooling groove 5 is arranged in front of the extruder main body 1, the cooling piece 4 is communicated with the cooling groove 5 through a pipeline, and the upper end of the cooling groove 5 is connected with a cover plate through a bolt;
the cooling water pump 6 is fixedly connected in front of the cooling tank 5, a water inlet pipe of the cooling water pump 6 is communicated with the inside of the cooling tank 5, and a water outlet pipe of the cooling water pump 6 is communicated with the cooling piece 4;
the pressure sensor 7 is fixedly connected to the front end above the extruder main body 1, and the pressure sensor 7 is in communication connection with an external control system;
the installation adjusting mechanism is provided at the front end of the extruder body 1.
Wherein, installation adjustment mechanism includes: mounting assembly 101, mounting locating pin 102, mounting locking bolt 103, adjusting connector 104, adjusting slider 105, adjusting gear 106, adjusting hand wheel 107, adjusting bolt 108, spiral channel 109, adjusting motor 110, adjusting hydraulic cylinder 111, adjusting connecting rod 112, adjusting diverter 113, adjusting drive worm gear 114, adjusting drive worm 115 and adjusting baffle 116;
the installation assembly 101 is of a semicircular structure, the installation assembly 101 is fixedly connected to the front end of the extruder main body 1, and two groups of positioning hole structures are arranged at the lower end of the installation assembly 101;
the two groups of installation positioning pins 102 are arranged, the two groups of installation positioning pins 102 are respectively and fixedly connected below the connecting die 2, and the two groups of installation positioning pins 102 are respectively arranged in the installation assembly 101;
the two groups of mounting locking bolts 103 are arranged, the two groups of mounting locking bolts 103 are respectively connected to the left side and the right side of the mounting assembly 101 in a threaded manner, and the inner sides of the two groups of mounting locking bolts 103 are respectively connected to the inside of a threaded hole of the connecting die 2 in a threaded manner;
the adjusting connecting piece 104 is fixedly connected to the front end above the connecting die 2, and a rectangular chute structure is arranged in the adjusting connecting piece 104;
the adjusting slide block 105 is fixedly connected above the extrusion head 3, the adjusting slide block 105 is slidably connected inside a chute of the adjusting connecting piece 104, and a rack structure is arranged on the left side of the adjusting slide block 105;
the adjusting gear 106 is rotatably connected inside the chute of the adjusting connecting piece 104, and the adjusting gear 106 is meshed with the rack structure of the adjusting slide block 105;
the adjusting hand wheel 107 is coaxially and fixedly connected above the adjusting gear 106;
an adjusting bolt 108 is in threaded connection above the adjusting connecting piece 104, and the lower end of the adjusting bolt 108 is in friction contact with the adjusting slide 105;
the spiral channel 109 is in a spiral groove structure, and the spiral channel 109 is arranged inside the connecting die 2;
the adjusting motor 110 is fixedly connected to the front of the right end of the extruder main body 1, and the adjusting motor 110 is electrically connected with an external control system;
an adjusting hydraulic cylinder 111 is fixedly connected in front of the right end of the extruder main body 1, and the adjusting hydraulic cylinder 111 is electrically connected with an external control system
The adjusting connecting rod 112 is fixedly connected to the front end of a piston rod of the adjusting hydraulic cylinder 111, and the adjusting connecting rod 112 is slidably connected to the right end of the connecting die 2;
the adjusting shunt 113 is in a conical structure, the adjusting shunt 113 is connected inside the connecting die 2 in a sliding way, and the right end of the adjusting shunt 113 is fixedly connected with the adjusting connecting rod 112;
the adjusting drive worm gear 114 is rotatably connected to the rear end of the adjusting hydraulic cylinder 111, and a threaded hole structure is arranged in the middle of the adjusting drive worm gear 114;
the adjusting drive worm 115 is coaxially and fixedly connected to the left side of the rotating shaft of the adjusting motor 110, and the adjusting drive worm 115 is meshed with the adjusting drive worm gear 114;
the adjusting baffle 116 is slidably connected to the inside of the adjusting hydraulic cylinder 111, a piston structure is disposed at the front end of the adjusting baffle 116, and the adjusting baffle 116 is screwed to the inside of the threaded hole of the adjusting drive worm wheel 114.
In use, when the connecting die 2 is required to be installed, the connecting die 2 is placed above the installation assembly 101, then the installation positioning pin 102 is inserted into the positioning hole of the installation assembly 101, finally the installation locking bolt 103 is used for fixing the connecting die 2, the installation and the disassembly of the connecting die 2 are convenient, then the adjusting hand wheel 107 is rotated, the adjusting hand wheel 107 is rotated to drive the adjusting gear 106 to rotate, the adjusting gear 106 is rotated to drive the adjusting slide block 105 to move back and forth, the adjusting slide block 105 is moved back and forth to drive the extrusion head 3 to move back and forth, after the extrusion head 3 is adjusted to a required position, the adjusting bolt 108 is screwed, the fixing of the extrusion head 3 is realized by the adjusting bolt 108, the accurate matching of the extrusion head 3 and the connecting die 2 is ensured, the accurate transmission of pressure in the forming process is indirectly ensured, the generation of forming defects is avoided, and then the molding quality and efficiency of polytetrafluoroethylene tube are improved, finally, through the detection of the pressure sensor 7, when the pressure sensor 7 detects the pressure change in the extruder, the pressure sensor 7 transmits signals to a control system, the adjusting motor 110 is started through the control of the control system, the rotating shaft of the adjusting motor 110 rotates to drive the adjusting driving worm 115 to rotate, the adjusting driving worm 115 rotates to drive the adjusting driving worm wheel 114 to rotate, the adjusting driving worm wheel 114 rotates to drive the adjusting baffle 116 to move back and forth, the adjusting baffle 116 moves back and forth to realize the control formed by the adjusting hydraulic cylinder 111, the piston rod of the adjusting hydraulic cylinder 111 moves back and forth to drive the adjusting connecting rod 112 to move back and forth, the adjusting connecting rod 112 moves back and forth to drive the adjusting shunt 113 to move back and forth, the adjusting shunt 113 moves back and forth to realize the control of pressure, the accuracy and the real-time performance of the pressure control are ensured, so that the pressure control problem in the polytetrafluoroethylene tube forming process is successfully solved.
Embodiment two:
on the basis of the first embodiment, as shown in fig. 1 to 4, the cooling efficiency enhancing mechanism is further included, the cooling efficiency enhancing mechanism is arranged inside the cooling tank 5,
wherein, cooling synergy mechanism includes: a heat radiation fan 501, a dispersion water wheel 502, and a partition plate 503;
the heat dissipation fans 501 are provided with a plurality of groups, and the heat dissipation fans 501 are respectively and fixedly connected above the cover plate of the cooling tank 5;
the plurality of groups of the dispersion water wheels 502 are arranged, and the plurality of groups of the dispersion water wheels 502 are respectively and rotatably connected inside the water inlet pipe and the water outlet pipe of the cooling water pump 6;
the partition plates 503 are provided with a plurality of groups, and the plurality of groups of partition plates 503 are respectively fixedly connected inside the cooling tank 5.
In use, after the extruded polytetrafluoroethylene tube enters the cooling tank 5, the polytetrafluoroethylene tube is cooled by cooling water in the cooling tank 5, the partition plate 503 ensures fluidity of water flow in the cooling tank 5, and meanwhile, the heat dissipation fan 501 achieves heat dissipation effect on the cooling water, meanwhile, in the process of cooling water circulation, the cooling water impacts the dispersion water wheels 502, the dispersion water wheels 502 are impacted to rotate, the dispersion water wheels 502 rotate to throw the cooling water to the tube wall, so that the cooling water contacts with the tube wall, and the cooling effect of the cooling water is improved.
Claims (10)
1. The polytetrafluoroethylene tube forming device comprises an extruder main body (1), a connecting die (2), an extrusion head (3), a cooling piece (4), a cooling groove (5), a cooling water pump (6), a pressure sensor (7), an installation adjusting mechanism and a cooling synergistic mechanism; the method is characterized in that: the connecting die (2) is fixedly connected to the front end of the extruder main body (1), and threaded hole structures are arranged on the left side and the right side of the rear end of the connecting die (2); the extrusion head (3) is arranged in front of the connecting die (2); the cooling piece (4) is arranged below the extrusion head (3); the cooling groove (5) is arranged in front of the extruder main body (1), the cooling piece (4) is communicated with the cooling groove (5) through a pipeline, and the upper end of the cooling groove (5) is connected with a cover plate through a bolt; the cooling water pump (6) is fixedly connected to the front of the cooling tank (5), a water inlet pipe of the cooling water pump (6) is communicated with the inside of the cooling tank (5), and a water outlet pipe of the cooling water pump (6) is communicated with the cooling piece (4); the pressure sensor (7) is fixedly connected to the front end above the extruder main body (1), and the pressure sensor (7) is in communication connection with an external control system; the installation adjusting mechanism is arranged at the front end of the extruder main body (1); the cooling synergistic mechanism is arranged in the cooling groove (5).
2. The polytetrafluoroethylene tubing molding apparatus as defined in claim 1 wherein: the installation adjustment mechanism comprises: a mounting assembly (101), a mounting dowel (102) and a mounting locking bolt (103); the mounting assembly (101) is of a semicircular structure, the mounting assembly (101) is fixedly connected to the front end of the extruder main body (1), and two groups of positioning hole structures are arranged at the lower end of the mounting assembly (101); the two groups of installation positioning pins (102) are arranged in total, the two groups of installation positioning pins (102) are respectively and fixedly connected below the connecting die (2), and the two groups of installation positioning pins (102) are respectively arranged in the installation assembly (101); the two groups of installation locking bolts (103) are arranged in total, the two groups of installation locking bolts (103) are respectively connected to the left side and the right side of the installation assembly (101) in a threaded mode, and the inner sides of the two groups of installation locking bolts (103) are connected to the inside of a threaded hole of the connecting die (2) in a threaded mode.
3. The polytetrafluoroethylene tubing molding apparatus as defined in claim 2 wherein: the installation adjustment mechanism also comprises: an adjusting connection (104) and an adjusting slide (105); the adjusting connecting piece (104) is fixedly connected to the front end above the connecting die (2), and a rectangular chute structure is arranged in the adjusting connecting piece (104); the adjusting slide block (105) is fixedly connected above the extrusion head (3), the adjusting slide block (105) is slidably connected inside a chute of the adjusting connecting piece (104), and a rack structure is arranged on the left side of the adjusting slide block (105).
4. A polytetrafluoroethylene tubing forming apparatus as claimed in claim 3 wherein: the installation adjustment mechanism also comprises: an adjusting gear (106), an adjusting hand wheel (107) and an adjusting bolt (108); the adjusting gear (106) is rotatably connected inside a chute of the adjusting connecting piece (104), and the adjusting gear (106) is meshed with a rack structure of the adjusting slide block (105); the adjusting hand wheel (107) is coaxially and fixedly connected above the adjusting gear (106); the adjusting bolt (108) is in threaded connection above the adjusting connecting piece (104), and the lower end of the adjusting bolt (108) is in friction contact with the adjusting slide block (105).
5. The polytetrafluoroethylene tubing forming apparatus as defined in claim 4 wherein: the installation adjustment mechanism also comprises: a spiral channel (109); the spiral channel (109) is of a spiral groove structure, and the spiral channel (109) is arranged in the connecting die (2).
6. The polytetrafluoroethylene tubing forming apparatus as defined in claim 5 wherein: the installation adjustment mechanism also comprises: an adjusting motor (110), an adjusting hydraulic cylinder (111), an adjusting connecting rod (112) and an adjusting shunt (113); the adjusting motor (110) is fixedly connected to the front of the right end of the extruder main body (1), and the adjusting motor (110) is electrically connected with an external control system; the adjusting hydraulic cylinder (111) is fixedly connected to the front of the right end of the extruder main body (1), the adjusting hydraulic cylinder (111) is electrically connected with an external control system, the adjusting connecting rod (112) is fixedly connected to the front end of a piston rod of the adjusting hydraulic cylinder (111), and the adjusting connecting rod (112) is slidably connected to the right end of the connecting die (2); the adjusting flow divider (113) is of a conical structure, the adjusting flow divider (113) is connected inside the connecting die (2) in a sliding mode, and the right end of the adjusting flow divider (113) is fixedly connected with the adjusting connecting rod (112).
7. The polytetrafluoroethylene tubing forming apparatus as defined in claim 6 wherein: the installation adjustment mechanism also comprises: an adjustment drive worm wheel (114), an adjustment drive worm (115) and an adjustment baffle (116); the adjusting driving worm wheel (114) is rotatably connected to the rear end of the adjusting hydraulic cylinder (111), and a threaded hole structure is arranged in the middle of the adjusting driving worm wheel (114); the adjusting driving worm (115) is coaxially and fixedly connected to the left side of a rotating shaft of the adjusting motor (110), and the adjusting driving worm (115) is meshed with the adjusting driving worm wheel (114); the adjusting baffle (116) is slidably connected in the adjusting hydraulic cylinder (111), a piston structure is arranged at the front end of the adjusting baffle (116), and the adjusting baffle (116) is in threaded connection in a threaded hole of the adjusting drive worm wheel (114).
8. The polytetrafluoroethylene tubing molding apparatus as defined in claim 1 wherein: the cooling synergistic mechanism comprises: a heat radiation fan (501) and a dispersion water wheel (502); the heat dissipation fans (501) are provided with a plurality of groups, and the heat dissipation fans (501) are respectively and fixedly connected above the cover plate of the cooling groove (5); the dispersing water wheels (502) are provided with a plurality of groups, and the plurality of groups of dispersing water wheels (502) are respectively and rotatably connected inside the water inlet pipe and the water outlet pipe of the cooling water pump (6).
9. The polytetrafluoroethylene tubing molding apparatus as defined in claim 1 wherein: the cooling synergistic mechanism also comprises: a partition plate (503); the division plates (503) are provided with a plurality of groups, and the division plates (503) are respectively and fixedly connected in the cooling groove (5).
10. The method for molding polytetrafluoroethylene tubing as defined in claim 1 wherein:
01. material selection and preparation: checking whether a hopper of the extruder has material residues or not, and placing polytetrafluoroethylene materials into the hopper of the extruder after the checking is finished;
02. extrusion head assembly: installing the extrusion head, ensuring that its taper is not broken, checking the internal spiral channel, ensuring that it is clean and free of any clogging;
03. connect the extrusion head with the extruder: the extrusion head and the extruder are connected by using the installation and adjustment mechanism, and the accurate matching between the extrusion head and the extruder is ensured by using the installation and adjustment mechanism, so that the extrusion head is ensured to realize high-precision positioning during connection;
04. the extrusion operation is started: starting the extruder, starting the material to pass through the extrusion head, and uniformly distributing pressure when the material passes through the extrusion head due to the conical design of the extrusion head, so that the forming speed is improved;
05. monitoring and adjusting: continuously monitoring the flow and forming speed of the material during extrusion, replacing or maintaining the extrusion head if necessary, and simplifying the process by using an installation and adjustment mechanism;
06. extrusion and cooling are completed: after extrusion is finished, cooling the polytetrafluoroethylene tube, and carrying out subsequent treatment according to requirements;
07. cleaning and maintaining equipment: after shut down, the extrusion head is cleaned, particularly the internal screw channel, and maintenance of the equipment is performed periodically to ensure long-term stable operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311514740.2A CN117245879B (en) | 2023-11-15 | 2023-11-15 | Polytetrafluoroethylene pipe forming device and method |
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| CN202311514740.2A CN117245879B (en) | 2023-11-15 | 2023-11-15 | Polytetrafluoroethylene pipe forming device and method |
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| CN117245879B CN117245879B (en) | 2024-02-02 |
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| CN210820836U (en) * | 2019-09-09 | 2020-06-23 | 东莞市帝泰新材料有限公司 | Extruding mechanism of plastic extruder |
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