Pipe extrusion die and extruder

Abstract

The invention relates to the technical field of pipe molds, in particular to a pipe extrusion mold and an extruder, the pipe extrusion mold comprises a shunting assembly, an extrusion inner mold, an extrusion outer mold, a high-temperature-resistant wire, a mounting sheath and a pipe quality detection assembly arranged in the mounting sheath, and the extrusion inner mold and the extrusion outer mold are both connected with the shunting assembly; the mounting sheath is connected with the extrusion inner die; a flow dividing cavity is formed in the flow dividing assembly, a cavity is formed between the extrusion inner mold and the extrusion outer mold, and the flow dividing cavity communicates with the cavity; a power supply input wiring end is arranged on the shunting assembly, an in-pipe electric wiring end electrically connected with the pipe quality detection assembly is arranged in the mounting sheath, the high-temperature-resistant wire penetrates through the shunting assembly and the extrusion inner mold, and the power supply input wiring end is electrically connected with the in-pipe electric wiring end through the high-temperature-resistant wire. Long-term stable power supply for the extruded pipe quality monitoring equipment is realized, the battery does not need to be replaced, and the operation is convenient and fast.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe moulds, and more specifically, to a pipe extrusion mould and an extruder. Background Art

[0002] In the production and processing of plastic pipes such as UPVC pipes and PE pipes, extrusion process is often used, that is, the plastic raw materials are melted and added to the extruder, introduced into the extrusion mold to complete the shaping, and finally cooled to obtain the pipe. With the continuous improvement of the quality requirements of pipes, how to accurately detect the quality of pipes during the production process has become an important issue in the field of plastic pipe molding.

[0003] In the prior art, for example, Chinese patent CN220923265U discloses a monitoring device for extrusion tubes, including an internal infrared detection sensor provided at the die of the extruder and used to detect the inner diameter of the tube, an infrared detection control system provided at the control console of the extruder, and the internal infrared detection sensor and the motor used to drive the screw of the extruder to rotate are both connected to the infrared detection control system by signal. When the internal infrared detection sensor detects that the inner diameter data is abnormal, it will send a signal to the infrared detection control system, which will process the signal after receiving it and send a signal to the motor driving the screw of the extruder to rotate, control the speed of the motor, adjust the speed of the extrusion screw, and keep the amount of tube extruded per unit time within the set range, thereby controlling the inner diameter of the tube and achieving quality control inside the tube. However, the detection device provides power through an internal battery, and cannot achieve long-term and effective power supply, and the operation is cumbersome when replacing the battery. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiency of the prior art that electric energy is provided by internal batteries and long-term effective power supply cannot be achieved, and to provide a pipe extrusion die and an extruder, which realize long-term stable power supply for extruded pipe quality monitoring equipment, do not need to replace batteries, and are convenient and quick to operate.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] Provided is a pipe extrusion die, comprising a shunt component, an extrusion inner die, an extrusion outer die, a high temperature resistant wire, an installation sheath, and a pipe quality detection component arranged in the installation sheath, the extrusion inner die and the extrusion outer die are both connected to the shunt component, and the installation sheath is connected to the extrusion inner die; a shunt cavity is provided in the shunt component, a cavity is provided between the extrusion inner die and the extrusion outer die, and the shunt cavity is communicated with the cavity; a power supply input terminal is provided on the outside of the shunt component, an in-pipe power terminal electrically connected to the pipe quality detection component is provided on the inside of the installation sheath, the high temperature resistant wire passes through the shunt component and the extrusion inner die, and the power supply input terminal and the in-pipe power terminal are electrically connected through the high temperature resistant wire.

[0007] In the pipe extrusion die of the present invention, the extrusion inner die and the extrusion outer die are both connected to the shunt assembly, the installation sheath is fixed on the extrusion inner die, the power input terminal arranged on the shunt assembly and the in-pipe power terminal arranged in the installation sheath are electrically connected through a high temperature resistant wire, and the in-pipe power terminal is electrically connected to the pipe quality detection assembly arranged in the installation sheath. During the pipe forming process, the molten plastic material flows from the shunt cavity inside the shunt assembly into the cavity between the extrusion inner die and the extrusion outer die, and gradually forms into a pipe in the cavity. The pipe quality detection assembly is arranged in the installation sheath of the pipe core, and is used to detect the inner diameter, smoothness, etc. of the pipe. The high temperature resistant wire passes through the shunt assembly and the extrusion inner die, completing the electrical connection between the power input terminal, the in-pipe power terminal, and the pipe quality detection assembly, thereby realizing long-term and stable power supply to the extruded pipe quality monitoring assembly, without the need to replace the battery, and the operation is convenient and quick.

[0008] Furthermore, the power input terminal is provided with a first input port and a second input port, the in-tube power terminal is provided with a first output port and a second output port, the first input port and the first output port are connected via the high temperature resistant wire, the second input port is connected to the shunt assembly via the high temperature resistant wire, and the second output port is connected to the installation sheath via the high temperature resistant wire. The second input port is connected to the shunt assembly, and the second output port is connected to the installation sheath, and the electrical connection between the second input port and the second output port is achieved through the conductive performance of the mold itself, thereby avoiding the problem of short circuit easily occurring in the high temperature environment of the mold core due to the double-wire power supply.

[0009] Furthermore, the outer surface of the high temperature resistant wire is sheathed with a heat resistant insulating sleeve. Adding a layer of heat resistant insulating sleeve on the surface of the high temperature resistant wire prevents the internal wire from contacting the mold and causing a short circuit after the surface of the high temperature resistant wire melts, thus playing a role of double insulation protection.

[0010] Furthermore, the pipe extrusion die also includes a die connector, the diverter assembly includes a diverter comb and a connection seat for connecting the extrusion inner die and the extrusion outer die, the diverter comb is connected between the die connector and the connection seat, and the die connector is provided with an inlet, which is communicated with a diverter cavity provided between the die connector and the diverter comb. The die connector is used to connect the extruder and provide a stable installation position for the diverter comb. The molten plastic material flows into the diverter cavity from the inlet on the die connector, and under the action of the diverter comb, the diverter cavity is filled, so that it is convenient to enter the cavity to complete the pipe molding. One end of the connection seat is fixedly connected to the diverter comb, and the other end provides a mounting structure for the extrusion inner die and the extrusion outer die, so as to achieve stable matching between the components in the die.

[0011] Furthermore, an outer mold sleeve is connected between the extrusion outer mold and the diverter comb, the connection seat is arranged inside the outer mold sleeve, the connection seat is truncated cone-shaped, and the distance between the connection seat and the outer mold sleeve is continuously reduced. The truncated cone-shaped connection seat cooperates with the outer mold sleeve to form a flow channel with a continuously reduced cross-sectional diameter between the outer mold sleeve and the connection seat, so that the molten plastic material can flow smoothly in the gap between the connection seat and the extrusion outer mold, and the thickness of the molten plastic material is continuously reduced, slowly transitioning to the wall thickness required for the pipe, avoiding blockage during the flow process.

[0012] Furthermore, the diverter comb includes a conical diverter head and a mounting portion, the mounting portion is arranged between the mold connector and the outer mold sleeve, the conical diverter head and the mounting portion are connected via a plurality of diverter plates, and the mounting portion is provided with a plurality of mounting holes. The mounting holes on the mounting portion cooperate with components such as countersunk screws to fix the diverter comb between the mold connector and the outer mold sleeve, the conical diverter head diverts a large stream of molten plastic material into multiple streams, and the diverter plate between the mounting portion and the conical diverter head further improves the diverting effect of the diverter comb.

[0013] Furthermore, the mounting portion is provided with a first wire stringing hole, the conical shunt head and the connecting seat are provided with a first wire stringing cavity, the first wire stringing hole is communicated with the first wire stringing cavity, and the high temperature resistant wire passes through the first wire stringing hole and the first wire stringing cavity. The high temperature resistant wire passes through the first wire stringing hole provided on the mounting portion and the first wire stringing cavity provided on the connecting seat, which does not affect the shunting effect of the shunting comb and provides installation space for the power supply line.

[0014] Furthermore, it also includes a mandrel, the mandrel is connected to the connection seat, the extrusion inner die is sleeved on the mandrel, the installation sheath is connected to the mandrel, the mandrel is provided with a second wire stringing cavity connected to the first wire stringing cavity, and the high temperature resistant wire passes through the second wire stringing cavity. The second wire stringing cavity for the high temperature resistant wire to pass through is provided on the mandrel, and without affecting the tube forming effect between the extrusion inner die and the extrusion outer die, long-term stable power supply to the electrical terminal in the tube is achieved, thereby real-time monitoring of the quality of the tube core.

[0015] Furthermore, it also includes a first heating ring and a second heating ring, wherein the first heating ring is connected to the outer periphery of the diverter assembly, and the second heating ring is connected to the outer periphery of the extrusion outer mold. The first heating ring and the second heating ring keep the entire mold at a relatively high temperature, and the plastic material remains in a molten state in the mold, and can smoothly flow into the mold cavity to complete the molding process of the pipe.

[0016] The present invention also provides an extruder, comprising a frame, an extrusion assembly, a feed box, a pipe sizing die, a spray water tank, and the pipe extrusion die as described in any one of claims 1 to 4, wherein the extrusion assembly and the pipe extrusion die are both installed on the frame, the feed box is connected to the extrusion assembly, the extrusion assembly is connected to the pipe extrusion die, one end of the pipe sizing die is connected to the pipe extrusion die, and the other end is connected to the spray water tank.

[0017] The extruder of the present invention fixes the position of the pipe extrusion die and the extrusion assembly through a frame, and the feed box introduces the plastic material into the extrusion assembly, melts in the extrusion assembly and extrude it to the pipe extrusion die to complete the pipe forming, and finally determines the outer diameter of the pipe at the pipe sizing die and enters the spray water tank for cooling. During the operation of the extruder, the high temperature resistant wire provides stable power supply for the pipe quality detection assembly arranged at the core of the pipe extrusion die, so that the internal quality of the pipe can be controlled during the pipe forming process, and unqualified products can be found in time.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. It realizes long-term stable power supply to the pipe quality detection components in the core of the pipe, without the need to replace batteries, and is easy and quick to operate;

[0020] 2. During the pipe forming process, the internal quality of the pipe can be controlled and unqualified products can be found in time;

[0021] 3. Avoid the problem of short circuit caused by multiple wires in the high temperature environment of the mold core, which has a long service life and high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the pipe extrusion die;

[0023] Figure 2 for Figure 1 Sectional view at the middle AA position;

[0024] Figure 3 for Figure 2 A partial enlarged view of the middle I position;

[0025] Figure 4 for Figure 2 A partial enlarged view of the II position;

[0026] Figure 5 is a schematic structural diagram of the first heating coil;

[0027] Figure 6 It is a structural schematic diagram of the diverter comb;

[0028] Figure 7 for Figure 6 Cross-sectional view of the middle BB position;

[0029] Figure 8 It is a structural schematic diagram of the outer mold sleeve;

[0030] Fig. 9 for Figure 8 Cross-sectional view at the middle CC position;

[0031] Fig.10 It is a structural schematic diagram of the connecting seat;

[0032] Fig.11 for Fig.10 Sectional view of the middle DD position;

[0033] Fig.12 It is a schematic diagram of the structure of the mandrel;

[0034] Fig.13 for Fig.12 Sectional view at the EE position;

[0035] Fig.14 It is a schematic diagram of the structure of the extrusion inner mold;

[0036] Fig.15 It is a schematic diagram of the structure of the extrusion outer mold;

[0037] Fig.16 A schematic diagram of the structure for installing the sheath;

[0038] Fig.17 for Fig.16 Cross-sectional view at the middle FF position;

[0039] Fig.18 It is a schematic diagram of the connection between the power input terminal and the power terminal in the pipe;

[0040] Fig.19 Schematic diagram of the extruder structure.

[0041] In the accompanying drawings: 100, shunt assembly; 110, shunt cavity; 120, power input terminal; 121, first input port; 122, second input port; 130, mold connector; 131, feed port; 140, shunt comb; 141, conical shunt head; 142, mounting portion; 143, shunt plate; 144, mounting hole; 145, first string hole; 150, connecting seat; 151, first string cavity; 152, first fixing hole; 153, connecting portion; 160, first heating coil; 161, first through hole; 200, extrusion inner mold; 210, mold cavity; 220, boss; 230, second through hole; 300, extrusion outer mold; 310, second heating coil; 320, outer mold sleeve; 321, second fixing hole; 3 22. Adjustment hole; 323. Third fixing hole; 330. Flange step; 340. External mold locking flange; 400. High temperature resistant wire; 410. Heat resistant insulating sleeve; 500. Installation sheath; 510. Electrical connection terminal in pipe; 511. First output port; 512. Second output port; 520. Second wire stringing hole; 530. Wiring screw; 540. Pipe joint; 550. Electrical connection window; 560. Wiring window of detection component; 600. Pipe quality detection component; 610. Installation bracket; 700. Mandrel; 710. Second wire stringing cavity; 720. External thread; 730. Internal thread; 800. Frame; 810. Extrusion component; 820. Feed box; 830. Pipe sizing die; 840. Spray water tank. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0043] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] This embodiment is the first embodiment of the pipe extrusion die, comprising a flow dividing component 100, an extrusion inner die 200, an extrusion outer die 300, a high temperature resistant wire 400, a mounting sheath 500, and a pipe quality detection component 600 disposed in the mounting sheath 500. The extrusion inner die 200 and the extrusion outer die 300 are both connected to the flow dividing component 100, and the mounting sheath 500 is connected to the extrusion inner die 200. The flow dividing component 100 is provided with a flow dividing cavity 110, and the extrusion inner die 200 is provided with a flow dividing cavity 110. A cavity 210 is provided between the shunt assembly 100 and the extrusion outer die 300, and the shunt cavity 110 is connected to the cavity 210; a power input terminal 120 is provided on the outside of the shunt assembly 100, and a pipe internal power terminal 510 electrically connected to the pipe quality inspection assembly 600 is provided on the inside of the installation sheath 500; the high temperature resistant wire 400 passes through the shunt assembly 100 and the extrusion inner die 200, and the power input terminal 120 is electrically connected to the pipe internal power terminal 510 through the high temperature resistant wire 400. Figure 1 , Figure 2 As shown, the extrusion inner mold 200 and the extrusion outer mold 300 are both connected to the shunt assembly 100, the installation sheath 500 is fixed on the extrusion inner mold 200, the power input terminal 120 provided on the shunt assembly 100 and the pipe inner power terminal 510 provided in the installation sheath 500 are electrically connected through the high temperature resistant wire 400, and the pipe inner power terminal 510 is electrically connected to the pipe quality detection assembly 600 provided in the installation sheath 500. During the pipe forming process, the molten plastic material flows from the shunt cavity 110 inside the shunt assembly 100 into the cavity 210 between the extrusion inner mold 200 and the extrusion outer mold 300, and gradually forms into a pipe in the cavity 210. The pipe quality detection component 600 is arranged in the installation sheath 500 of the pipe core, and is used to detect the inner diameter, smoothness and other qualities of the pipe. The high temperature resistant wire 400 passes through the shunt component 100 and the extrusion inner mold 200, completing the electrical connection between the power input terminal 120, the power terminal 510 inside the pipe, and the pipe quality detection component 600, thereby realizing long-term and stable power supply for the extruded pipe quality detection component 600, without the need to replace batteries, and the operation is convenient and quick.

[0046] The power input terminal 120 is provided with a first input port 121 and a second input port 122, and the in-pipe power terminal 510 is provided with a first output port 511 and a second output port 512. The first input port 121 and the first output port 511 are connected via a high temperature resistant wire 400, the second input port 122 is connected to the shunt assembly 100 via the high temperature resistant wire 400, and the second output port 512 is connected to the installation sheath 500 via the high temperature resistant wire 400. Figure 3 , Figure 4 , Fig.18As shown, in this embodiment, the first input port 121 and the first output port 511 are directly connected through the high temperature resistant wire 400, and the second input port 122 is connected to the high temperature resistant wire 400 on the power input terminal 120, and the wiring screw 530 fixes the high temperature resistant wire 400 to the mold connector 130; on the in-tube power terminal 510, the second output port 512 is connected to the high temperature resistant wire 400, and the wiring screw 530 connects the high temperature resistant wire 400 to the installation sheath 500, and the current is transmitted through the conductive property of the mold itself, thereby avoiding short circuit caused by using two-wire power supply in the high temperature environment of the mold core.

[0047] The outer surface of the high temperature resistant wire 400 is covered with a heat resistant insulating sleeve 410. Figure 3 As shown, in this embodiment, a high-temperature resistant wire 400 with good conductive performance is selected and a layer of ceramic heat-resistant insulating sleeve 410 is installed on the high-temperature resistant wire 400 to prevent the high-temperature resistant wire 400 from being used for a long time. After the surface is melted at high temperature, the wire directly contacts the mold and short-circuits, thereby achieving the effect of double insulation.

[0048] The pipe extrusion die also includes a die connector 130, and the flow diversion assembly 100 includes a flow diversion comb 140 and a connection seat 150 for connecting the extrusion inner die 200 and the extrusion outer die 300. The flow diversion comb 140 is connected between the die connector 130 and the connection seat 150. The die connector 130 is provided with an inlet 131, and the inlet 131 is connected with the flow diversion cavity 110 provided between the die connector 130 and the flow diversion comb 140. The die connector 130 is a flange-type structure, and is provided with an inlet 131 connected with the flow diversion cavity 110, and is used to connect the flow diversion assembly 100 and the extruder; one end of the connection seat 150 is fixedly connected with the flow diversion comb 140 by a countersunk screw, and the other end is connected with the extrusion inner die 200 by an internal thread; the molten plastic enters the flow diversion assembly 100 from the inlet 131, and is divided into multiple strands in the flow diversion cavity 110 under the action of the flow diversion comb 140, and finally flows into the mold cavity 210 for molding.

[0049] An outer mold sleeve 320 is connected between the extrusion outer mold 300 and the diverter comb 140. The connecting seat 150 is disposed inside the outer mold sleeve 320. The connecting seat 150 is truncated cone-shaped and the distance between the connecting seat 150 and the outer mold sleeve 320 is continuously reduced. Fig.10 , Fig.11 As shown, the connecting seat 150 is a hollow truncated cone structure, which is installed at the rear end of the diverter comb 140 and provides an installation connection foundation for the extrusion inner mold 200. The distance between the outer mold sleeve 320 and the truncated cone-shaped connecting seat 150 is continuously reduced, forming a flow channel with a continuously reduced cross-sectional diameter. The molten plastic material can flow smoothly in the gap between the connecting seat 150 and the extrusion outer mold 300, so that the thickness of the molten plastic material is continuously reduced and slowly transitions to the wall thickness required for the pipe, avoiding blockage during the flow process.

[0050] The flow splitter comb 140 includes a conical flow splitter head 141 and a mounting portion 142. The mounting portion 142 is disposed between the mold connector 130 and the outer mold sleeve 320. The conical flow splitter head 141 and the mounting portion 142 are connected via a plurality of flow splitter plates 143. The mounting portion 142 is provided with a plurality of mounting holes 144. Figure 6 , Figure 7 As shown, mounting parts 142 are provided around the diverter comb 140, the mounting parts 142 are connected to the mold connector 130 and the outer mold sleeve 320, and the position of the diverter comb 140 is fixed by means of mounting holes 144 and screws. A conical diverter head 141 is provided at the center of the diverter comb 140, and a diverter cavity 110 is formed between the conical diverter head 141 and the mounting parts 142, and a diverter plate 143 divides the diverter cavity 110 into a plurality of extrusion channels.

[0051] The mounting portion 142 is provided with a first wire stringing hole 145, and the conical flow divider 141 and the connecting seat 150 are provided with a first wire stringing cavity 151. The first wire stringing hole 145 is connected with the first wire stringing cavity 151, and the high temperature resistant wire 400 passes through the first wire stringing hole 145 and the first wire stringing cavity 151. Figure 7 As shown, the conical diverter head 141 and the connecting seat 150 are provided with a first wire stringing cavity 151 for the high temperature resistant wire 400 to pass through, and the mounting portion 142 and the diverter plate 143 are both provided with a first wire stringing hole 145 connected to the first wire stringing cavity 151, which does not affect the diverting effect of the diverter comb 140 and provides installation space for the power supply line.

[0052] The working principle of the pipe extrusion die in this embodiment is as follows: During the pipe forming process, the molten plastic material flows from the diverter cavity 110 inside the diverter assembly 100 into the cavity 210 between the extrusion inner die 200 and the extrusion outer die 300, and gradually forms into a pipe in the cavity 210. The power input terminal 120 and the internal power terminal 510 of the pipe are directly electrically connected by a high temperature resistant wire 400, and the high temperature resistant wire 400 passes through the diverter assembly 100 and the extrusion inner die 200 to supply power to the pipe quality detection assembly 600 disposed in the installation sheath 500.

[0053] Embodiment 2

[0054] This embodiment is the second embodiment of the pipe extrusion die. This embodiment is similar to the first embodiment, except that it further includes a mandrel 700, which is connected to the connection seat 150, the extrusion inner mold 200 is sleeved on the mandrel 700, the installation sheath 500 is connected to the mandrel 700, and the mandrel 700 is provided with a second wire stringing cavity 710 connected to the first wire stringing cavity 151, and the high temperature resistant wire 400 passes through the second wire stringing cavity 710. Fig.12 , Fig.13As shown, the mandrel 700 is a double-threaded hollow round rod structure, and a second wire stringing cavity 710 is provided inside for the high temperature resistant wire 400 to pass through. An internal thread 730 is provided at one end of the second wire stringing cavity 710 for connecting with the installation sheath 500. Both ends of the mandrel 700 are provided with external threads 720, which are respectively connected to the connection seat 150 and the locking nut. The mandrel 700 in this embodiment realizes long-term stable power supply to the electrical terminal 510 in the pipe without affecting the pipe forming effect between the extrusion inner die 200 and the extrusion outer die 300, thereby monitoring the quality of the pipe core in real time.

[0055] The extrusion inner mold 200 in this embodiment is as follows: Fig.14 As shown, a second through hole 230 for mounting the core rod 700 and a boss 220 for positioning in cooperation with the connection seat 150 are provided inside. One end of the extrusion outer mold 300 in this embodiment is connected to the outer mold sleeve 320, and the other end is connected to the outer mold locking flange 340. Fig.15 As shown, one end of the extrusion outer die 300 is provided with a flange step 330 that cooperates with the outer die locking flange 340. Figure 8 , Fig. 9 As shown, the outer mold sleeve 320 is a hollow flange-shaped structure, with a second fixing hole 321 at one end, which is fixedly connected to the diverter assembly 100 by screws; and a third fixing hole 323 at the other end, which is fixedly connected to the outer mold locking flange 340 by screws. An adjustment hole 322 is provided on the side wall of the outer mold sleeve 320, and the circumferential position of the outer mold sleeve 320 is adjusted by the adjustment hole 322 and the screw to avoid eccentricity during the molding process.

[0056] The pipe extrusion die in this embodiment further includes a first heating coil 160 and a second heating coil 310. The first heating coil 160 is connected to the outer periphery of the diverter assembly 100, and the second heating coil 310 is connected to the outer periphery of the extrusion outer die 300. Figure 5 As shown, the first heating coil 160 is provided with a first through hole 161 for the high temperature resistant wire 400 to pass through. The first heating coil 160 and the second heating coil 310 keep the whole mold at a high temperature, and the plastic material remains in a molten state in the mold, and can smoothly flow into the cavity 210 to complete the molding process of the pipe.

[0057] The installation sheath 500 in this embodiment includes a pipe joint 540 connected to the core tube, a second wire string hole 520, an electrical wiring window 550, a detection component wiring window 560, and an installation bracket 610 disposed inside the installation sheath 500. Fig.16 , Fig.17As shown, the installation sleeve 500 is a hollow cylindrical structure, the pipe joint 540 has a threaded connection portion connected to the core rod 700, the high temperature resistant wire 400 passes through the second threading hole into the core rod 700, the electrical wiring window 550 is convenient for adjusting the line of the electrical terminal 510 in the pipe, the installation bracket 610 provides an installation position for the pipe quality detection component 600, and the detection component wiring window 560 is convenient for installing the pipe quality detection component 600 into the installation sleeve 500.

[0058] The working principle of the pipe extrusion die in this embodiment is as follows: the high temperature resistant wire 400 in the installation sheath 500 enters the second wire stringing cavity 710 inside the core rod 700 from the second wire stringing hole 520, passes through the first wire stringing cavity 151 and the first wire stringing hole 145 inside the diverter assembly 100, and finally passes through the first through hole 161 on the first heating ring 160 to be connected to the power input terminal 120.

[0059] Embodiment 3

[0060] This embodiment is the first embodiment of the extruder, comprising a frame 800, an extrusion assembly 810, a feed box 820, a pipe sizing die 830, a spray water tank 840, and a pipe extrusion die according to any one of claims 1 to 9, wherein the extrusion assembly 810 and the pipe extrusion die are both mounted on the frame 800, the feed box 820 is connected to the extrusion assembly 810, the extrusion assembly 810 is connected to the pipe extrusion die, one end of the pipe sizing die 830 is connected to the pipe extrusion die, and the other end is connected to the spray water tank 840. Fig.19 As shown, the plastic material enters the extrusion assembly 810 from the feed box 820, is melted in the extrusion assembly 810 and extruded to the pipe extrusion die to complete the pipe forming, and finally the outer diameter of the pipe is determined at the pipe sizing die 830 and enters the spray water tank 840 for cooling. During the operation of the extruder, the high temperature resistant wire 400 provides a stable power supply to the pipe quality detection assembly 600 arranged at the core of the pipe extrusion die, so that the internal quality of the pipe can be controlled during the pipe forming process, and unqualified products can be found in time.

[0061] The working principle of the extruder in this embodiment is as follows: the plastic material enters the extrusion assembly 810 from the feed box 820, is melted in the extrusion assembly 810 and extruded to the pipe extrusion die to complete pipe forming, and finally the outer diameter of the pipe is determined at the pipe sizing die 830 and enters the spray water tank 840 for cooling.

[0062] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipe extrusion die, characterized in that: The invention comprises a flow dividing component (100), an extrusion inner die (200), an extrusion outer die (300), a high temperature resistant wire (400), an installation sheath (500), and a pipe quality detection component (600) arranged in the installation sheath (500), wherein the extrusion inner die (200) and the extrusion outer die (300) are both connected to the flow dividing component (100), and the installation sheath (500) is connected to the extrusion inner die (200); a flow dividing cavity (110) is arranged in the flow dividing component (100), and a flow dividing cavity (110) is arranged between the extrusion inner die (200) and the extrusion outer die (300). A cavity (210) is provided, and the shunt cavity (110) is communicated with the cavity (210); a power input terminal (120) is provided on the outside of the shunt component (100), and an in-pipe electrical terminal (510) electrically connected to the pipe quality detection component (600) is provided on the inside of the installation sleeve (500); the high-temperature resistant wire (400) passes through the shunt component (100) and the extrusion inner mold (200), and the power input terminal (120) and the in-pipe electrical terminal (510) are electrically connected via the high-temperature resistant wire (400).

2. A pipe extrusion die according to claim 1, characterized in that: The power input terminal (120) is provided with a first input port (121) and a second input port (122); the in-pipe power terminal (510) is provided with a first output port (511) and a second output port (512); the first input port (121) and the first output port (511) are connected via the high temperature resistant wire (400); the second input port (122) is connected to the shunt assembly (100) via the high temperature resistant wire (400); and the second output port (512) is connected to the installation sheath (500) via the high temperature resistant wire (400).

3. A pipe extrusion die according to claim 1, characterized in that: The outer surface of the high temperature resistant wire (400) is sheathed with a heat resistant insulating sleeve (410).

4. A pipe extrusion die according to claim 1, characterized in that: The pipe extrusion die further comprises a die connector (130), the flow diversion assembly (100) comprises a flow diversion comb (140) and a connection seat (150) for connecting the extrusion inner die (200) and the extrusion outer die (300), the flow diversion comb (140) being connected between the die connector (130) and the connection seat (150), the die connector (130) being provided with a feed inlet (131), the feed inlet (131) being communicated with a flow diversion cavity (110) arranged between the die connector (130) and the flow diversion comb (140).

5. A pipe extrusion die according to claim 4, characterized in that: An outer mold sleeve (320) is connected between the extrusion outer mold (300) and the diverter comb (140), and the connecting seat (150) is arranged inside the outer mold sleeve (320). The connecting seat (150) is truncated cone-shaped and the distance between the connecting seat (150) and the outer mold sleeve (320) is continuously reduced.

6. A pipe extrusion die according to claim 5, characterized in that: The diverter comb (140) comprises a conical diverter head (141) and a mounting portion (142); the mounting portion (142) is arranged between the mold connecting head (130) and the outer mold sleeve (320); the conical diverter head (141) and the mounting portion (142) are connected via a plurality of diverter plates (143); and the mounting portion (142) is provided with a plurality of mounting holes (144).

7. A pipe extrusion die according to claim 6, characterized in that: The mounting portion (142) is provided with a first wire stringing hole (145), the conical flow divider (141) and the connecting seat (150) are provided with a first wire stringing cavity (151), the first wire stringing hole (145) is communicated with the first wire stringing cavity (151), and the high temperature resistant wire (400) passes through the first wire stringing hole (145) and the first wire stringing cavity (151).

8. A pipe extrusion die according to claim 7, characterized in that: It also includes a core rod (700), the core rod (700) is connected to the connecting seat (150), the extrusion inner mold (200) is sleeved on the core rod (700), the installation sleeve (500) is connected to the core rod (700), and a second stringing cavity (710) connected to the first stringing cavity (151) is provided in the core rod (700), and the high temperature resistant wire (400) passes through the second stringing cavity (710).

9. A pipe extrusion die according to any one of claims 1 to 8, characterized in that: It also includes a first heating ring (160) and a second heating ring (310), wherein the first heating ring (160) is connected to the outer periphery of the diversion component (100), and the second heating ring (310) is connected to the outer periphery of the extrusion outer mold (300).

10. An extruder, characterized in that: It comprises a frame (800), an extrusion assembly (810), a feed box (820), a pipe sizing die (830), a spray water tank (840), and the pipe extrusion die according to any one of claims 1 to 9, wherein the extrusion assembly (810) and the pipe extrusion die are both mounted on the frame (800), the feed box (820) is connected to the extrusion assembly (810), the extrusion assembly (810) is connected to the pipe extrusion die, one end of the pipe sizing die (830) is connected to the pipe extrusion die, and the other end is connected to the spray water tank (840).

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