Water supply pipe extrusion processing system

Abstract

The application provides a water supply pipe extrusion processing system, which comprises an extruder and an extrusion die, the extruder has an extrusion head, and the extrusion die comprises a die seat, a die core and a die orifice; the die seat is wrapped with an electric heating belt, the die seat is provided with a mounting hole, a material flow channel is formed in the die seat and is sleeved outside the mounting hole, the die seat is further provided with a feeding interface, and the feeding interface is communicated with the material flow channel; the inner surface of the die orifice is provided with a plurality of first forming grooves, and the plurality of first forming grooves are distributed around the axis of the die orifice; wherein the die core is inserted into the mounting hole, the die orifice is sleeved on the die core, an extrusion channel is formed between the die orifice and the die core, and the material flow channel is communicated with the extrusion channel; the first forming grooves are configured to form ribs on the outer pipe wall of the pipe body extruded and formed through the extrusion die; in addition, the extrusion head is connected with the feeding interface. The ribs are formed on the pipe body while the pipe body is extruded, and the structural strength of the ribbed water supply pipe produced by the extrusion die is improved, so that the quality of the product is improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, and in particular to a water supply pipe extrusion processing system. Background Technology

[0002] Plastic pipes such as drip irrigation tubes are generally manufactured using extrusion molding. For this purpose, an extruder is equipped with an extruder head. The extruder heats and melts the plastic raw material, then extrudes it through the extruder head to form a tubular product. For example, Chinese patent publication numbers CN 110328824 A and CN112590168A disclose extruder heads used with extruders. These heads typically consist of a die base, a die, and a mandrel. Existing drip irrigation pipes used in agricultural irrigation are formed by extruding water supply pipes through the extruder head, and then corresponding drippers (such as flat or round drippers) are installed on these pipes to achieve their function. However, drip irrigation pipes are prone to breakage due to excessive stress during winding and unwinding, leading to reduced reliability. Therefore, how to design a technology to improve the tensile strength and water pressure resistance of water supply pipes to improve product quality is the technical problem this invention aims to solve. Summary of the Invention

[0003] This invention provides a water supply pipe extrusion processing system that forms reinforcing ribs on the pipe body while extruding it, thereby improving the structural strength of the reinforced water supply pipe produced by the extrusion die and thus improving the quality of the product.

[0004] This invention provides a water supply pipe extrusion processing system, including an extruder having an extrusion head, and further including an extrusion die; the extrusion die includes a die base, a die core, and a die; the die base is wrapped with an electric heating belt, the die base is provided with a mounting hole, a material flow channel is formed inside the die base, the material flow channel is sleeved outside the mounting hole, the die base is also provided with a feeding port, the feeding port is connected to the material flow channel; the inner surface of the die is provided with multiple first forming grooves, the multiple first forming grooves being distributed around the axis of the die;

[0005] The die core is inserted into the mounting hole, the die is fitted onto the die core, and an extrusion channel is formed between the die and the die core. The material flow channel is connected to the extrusion channel. The first forming groove is configured to form ribs on the outer wall of the tube body extruded by the extrusion die. In addition, the extrusion head is connected to the feed port.

[0006] Furthermore, multiple second forming grooves are provided on the outer surface of the mold core, and the multiple second forming grooves are distributed around the axis of the mold core;

[0007] The second forming groove is configured to form ribs on the inner wall of the tube body extruded through the extrusion die.

[0008] Furthermore, the first forming groove has a straight portion and a curved portion; the curved portion and the straight portion are arranged sequentially along the material output direction of the extrusion channel.

[0009] The present invention also provides a water supply pipe extrusion processing system, including an extruder having an extrusion head, and further including an extrusion die; the extrusion die includes a die base, a die core, and a die nozzle; the die base is wrapped with an electric heating belt, the die base is provided with a mounting hole, a material flow channel is formed inside the die base, the material flow channel is sleeved outside the mounting hole, the die base is also provided with a feeding port, the feeding port is connected to the material flow channel; the outer surface of the die core is provided with multiple third forming grooves, the multiple third forming grooves being distributed around the axis of the die core;

[0010] The die core is inserted into the mounting hole, the die is fitted onto the die core, and an extrusion channel is formed between the die and the die core. The material flow channel is connected to the extrusion channel. The third forming groove is configured to form ribs on the inner wall of the tube body extruded by the extrusion die. In addition, the extrusion head is connected to the feed port.

[0011] Furthermore, each end of the electric heating band is provided with a connecting rod, and the connecting rod is provided with a connecting hole. The connecting bolt passes through the connecting holes of the two adjacent connecting rods and is threaded with a fastening nut.

[0012] Furthermore, the electric heating belt is provided with at least one clearance hole, and the extrusion head passes through the clearance hole at the corresponding position and connects to the feed port.

[0013] Furthermore, a through mounting channel is formed in the mold base, one end of the through mounting channel is formed as the mounting hole, the mounting hole is formed as a conical structure, the outer peripheral surface of the mold core is provided with a conical surface that matches the mounting hole, and the outer peripheral surface of the die is provided with a cylindrical positioning surface.

[0014] The extrusion die further includes an installation and adjustment assembly, which includes a flange cover, a pressure sleeve, a pressure ring, and multiple adjustment bolts. The flange cover has multiple adjustment threaded through holes on its outer circumference, the pressure sleeve has a positioning guide hole, and the inner surface of the positioning guide hole forms a cylindrical positioning surface that matches the cylindrical positioning surface. The adjustment bolts are threaded into the adjustment threaded through holes. The pressure ring is detachably mounted on the end face of the pressure sleeve. The flange cover is fitted over the pressure sleeve and the pressure ring, and the adjustment bolts abut against the outer circumferential surface of the pressure sleeve.

[0015] The tapered surface is in contact with the wall of the mounting hole, the flange cover is disposed on the mold base, and the die is inserted into the positioning guide hole and sandwiched between the pressure ring and the mold base.

[0016] Furthermore, a disassembly insertion hole is formed at the other end of the through-mounting channel, and the opening size of the mounting hole is larger than the opening size of the disassembly insertion hole; the inner end face of the mold core is exposed in the disassembly insertion hole.

[0017] Furthermore, it also includes a disassembly push rod; the end of the disassembly push rod forms a support portion, which is a conical structure or a hemispherical structure.

[0018] Furthermore, a second stepped hole is formed on the flange gland, and a second stepped surface is formed in the second stepped hole. The second stepped hole has a first fixing section and a second fixing section, the size of the first fixing section being smaller than the size of the second fixing section; the pressure sleeve is located in the second fixing section and abuts against the second stepped surface.

[0019] The water supply pipe extrusion processing system provided by the present invention has a forming groove on the die core and / or die. The forming groove can shape the extruded material entering the extrusion channel in the extrusion channel, so that protruding ribs are formed on the pipe wall of the water supply pipe extruded from the extrusion channel. The ribs are extruded and formed integrally with the water supply pipe, so that the ribs will extend along the length direction of the water supply pipe. In this way, the ribs can effectively enhance the tensile strength and water pressure resistance of the water supply pipe to improve product quality. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of an embodiment of the reinforced water supply pipe of the present invention;

[0021] Figure 2 This is a schematic diagram of the water supply pipe extrusion processing system of the present invention;

[0022] Figure 3 for Figure 2 A cross-sectional view of the extrusion die;

[0023] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle;

[0024] Figure 5 for Figure 3 Schematic diagram of the middle die structure;

[0025] Figure 6 for Figure 3 A sectional view of the die;

[0026] Figure 7 for Figure 3One of the structural schematic diagrams of the middle mold core;

[0027] Figure 8 for Figure 3 The second schematic diagram of the structure of the middle mold core;

[0028] Figure 9 for Figure 2 A partial structural diagram of the extrusion die;

[0029] Figure 10 for Figure 9 Sectional view along the BB direction;

[0030] Figure 11 for Figure 10 A magnified view of a portion of region C in the middle;

[0031] Figure 12 for Figure 3 Schematic diagram of the structure of the middle flange gland;

[0032] Figure 13 for Figure 3 One of the structural schematic diagrams of the intermediate pressure sleeve;

[0033] Figure 14 for Figure 3 The second schematic diagram of the intermediate pressure sleeve. Detailed Implementation

[0034] Example 1, as Figures 1-6 As shown, one embodiment of this application provides an extrusion die for processing and producing a ribbed water supply pipe. The water supply pipe 1000 formed by this extrusion die will have raised ribs 1001 formed on its wall. Depending on the processing requirements, the outwardly protruding ribs 1001 can be formed on the outer wall of the water supply pipe 1000; the inwardly protruding ribs 1001 can be formed on the inner wall of the water supply pipe 1000; or the raised ribs 1001 can be formed on both the inner and outer walls of the water supply pipe 1000 simultaneously.

[0035] Since the reinforcing rib 1001 extends along the length of the water supply pipe 1000 and is integrally formed on the water supply pipe 1000, the reinforcing rib 1001 can effectively enhance the tensile strength and water pressure resistance of the water supply pipe 1000, thereby reducing the occurrence of the water supply pipe being pulled apart when winding and unwinding the water supply pipe, and improving the reliability of use during water supply.

[0036] The extrusion die includes a die base 1, a die core 2, and a die 3. In order to form ribs 1001 on the wall of the water supply pipe 1000 during the extrusion process, the die core 2 and / or the die 3 can be improved, as described below with reference to the accompanying drawings.

[0037] The mold base 1 is provided with a mounting hole 111, and a material flow channel 12 is formed inside the mold base 1, which is fitted outside the mounting hole 111. The inner surface of the die 3 is provided with a plurality of first forming grooves 32, which are distributed around the axis of the die 3.

[0038] Wherein, the die core 2 is inserted into the mounting hole 111, the die 3 is fitted on the die core 2, and an extrusion channel 20 is formed between the die 3 and the die core 2, and the material flow channel 12 is connected to the extrusion channel 20; in addition, the first forming groove 32 is configured to form ribs on the outer wall of the tube body extruded by the extrusion die.

[0039] Specifically, in actual use, the extrusion die will be installed on the extrusion head of the extruder. The material extruded by the extruder through the extrusion head flows into the extrusion die. The material flows through the material flow channel 12 to the extrusion channel 20 and is finally extruded to form a water supply pipe.

[0040] After the material enters the extrusion channel, during the extrusion process, some of the material will flow into the first forming groove 32, and finally form ribs 1001 on the pipe wall of the extruded water supply pipe 1000 under the shaping action of the first forming groove 32.

[0041] Since the first forming groove 32 is formed on the inner surface of the die 3, ribs 1001 can be formed on the outer wall of the water supply pipe.

[0042] Preferably, in order to ensure that the material can smoothly enter the first forming groove 32, the first forming groove 32 has a straight portion 321 and a curved portion 322; the curved portion 322 and the straight portion 321 are arranged sequentially along the material output direction of the extrusion channel 20.

[0043] Specifically, the curved section 322 can guide the material entering the extrusion channel smoothly into the first forming groove 32, and the material flows through the curved section 322 to the straight section 321, thereby forming ribs 1001 on the outer wall of the water supply pipe using the straight section 321.

[0044] In some embodiments, when a sheet-like dripper needs to be built into the water supply pipe, in order to improve the bonding reliability of the sheet-like dripper, at least a pair of auxiliary forming grooves 33 arranged side by side can be provided on the inner surface of the die 3. The width of the auxiliary forming grooves 33 is greater than the width of the first forming groove 32. Each pair of auxiliary forming grooves 33 is configured to form two side by side patch reinforcing ribs 1002 on the outer wall of the pipe body extruded by the extrusion die.

[0045] Specifically, during the extrusion process, after the tube body is extruded, the sheet-shaped drippers are directly attached to the inner wall of the tube body. The two sides of the sheet-shaped drippers are attached to the corresponding outer portions of the inner wall of the tube body with reinforcing ribs 1002. These reinforcing ribs 1002 enhance the thickness of the tube body at the bonding area for the sheet-shaped drippers, thus preventing damage during attachment due to a thin tube wall. The resulting reinforced water supply pipe has two parallel reinforcing ribs 1002 on its outer wall, the width of which is greater than the width of the outer rib.

[0046] In another embodiment, in order to form ribs 1001 on the inner wall of the water supply pipe, the design of the mold core 2 can be improved, such as... Figure 7 and Figure 8 As shown, a plurality of second forming grooves 23 are provided on the outer peripheral surface of the mold core 2, and the plurality of second forming grooves 23 are distributed around the axis of the mold core 2; wherein, the second forming grooves 23 are configured to form ribs on the inner wall of the tube body extruded by the extrusion die.

[0047] Specifically, during the material extrusion process through the extrusion channel, the second forming groove 23 on the mold core 2 will form protruding ribs 1001 on the inner wall of the extruded water supply pipe, thereby achieving the formation of ribs 1001 on both the inner and outer walls of the water supply pipe.

[0048] In another embodiment of this application, in order to form the rib 1001 only on the inner wall of the water supply pipe 1000, the second forming groove 23 is provided only on the outer surface of the die core 2 for the extrusion die, while the first forming groove 32 is no longer provided on the inner surface of the die 3.

[0049] Furthermore, in order to improve the extrusion effect, the die holder 1 also needs to be heated. For this purpose, an electric heating belt 13 can be wrapped around the outside of the die holder 1. The electric heating belt 13 is heated by electricity to meet the requirements of heating and heat preservation of the die holder 1 during use.

[0050] To facilitate the installation of the electric heating band 13, connecting rods 131 can be provided at both ends of the electric heating band 13. Connecting holes are provided on the connecting rods 131. Connecting bolts 132 pass through the connecting holes of the two adjacent connecting rods 131 and are threaded with fastening nuts 133. In this way, by tightening the fastening nuts 133, the electric heating band 13 can be wrapped around the outside of the mold base 1.

[0051] Based on the above-mentioned extrusion die, this application also provides an extrusion system, which includes an extruder having an extrusion head 200 and the above-mentioned extrusion die. The die holder of the extrusion die is connected to the extrusion head 200, and the extrusion head 200 is in communication with the material flow path of the extrusion module.

[0052] The die base is usually equipped with a feeding interface. The extrusion head 200 can be directly connected to the feeding interface, or the extrusion head 200 can be connected to the feeding interface of the die base through components such as transition connecting pipes.

[0053] In addition, the electric heating belt is provided with at least one clearance hole, which is used to avoid connecting other components to the outer circumference of the die base. For example, the extruder head 200 passes through the clearance hole at the corresponding position and connects to the feed port.

[0054] Example 2: Based on Example 1 above, optionally, in order to facilitate the installation of the die on the die base and to reduce the workload of on-site debugging when operators change the die core and die specifications later, the extrusion die is further structurally improved as follows.

[0055] like Figures 1-14 As shown, the mounting hole 111 forms a conical structure, the outer peripheral surface of the mold core 2 is provided with a conical surface 21 that matches the mounting hole 111, and the outer peripheral surface of the die 3 is provided with a cylindrical positioning surface 31.

[0056] The extrusion die also includes an installation and adjustment assembly 4, which includes a flange cover 41, a pressure sleeve 42, a pressure ring 43, and multiple adjustment bolts 44. The flange cover 41 has multiple adjustment threaded through holes 411 on its outer circumference. The pressure sleeve 42 has a positioning guide hole 421. The inner surface of the positioning guide hole 421 forms a cylindrical positioning surface 4210 that matches the cylindrical positioning surface 31. The adjustment bolts 44 are threaded into the adjustment threaded through holes. The pressure ring 43 is detachably installed on the end face of the pressure sleeve 42. The flange cover 41 is fitted over the pressure sleeve 42 and the pressure ring 43. The adjustment bolts 44 abut against the outer circumferential surface of the pressure sleeve 42.

[0057] The tapered surface 21 is in contact with the wall of the mounting hole 111, the flange cover 41 is disposed on the mold base 1, and the die 3 is inserted into the positioning guide hole 421 and sandwiched between the pressure ring 43 and the mold base 1.

[0058] Specifically, in order to ensure that self-alignment is not required when replacing the mold core 2 later, a mounting hole 111 is formed at one end of the through mounting channel 11. The mounting hole 111 has a flared conical structure. Correspondingly, the mold core 2 is improved by forming a conical surface 21 on its outer periphery that matches the mounting hole 111. In this way, the process of inserting the mold core 2 into the mounting hole 111 is guided by the mutual cooperation between the conical surface 21 and the mounting hole 111 to achieve self-alignment, thereby making the axis of the mold core 2 collinear with the axis of the mounting hole 111.

[0059] In order to facilitate the disassembly of the core 2, the extrusion die also includes a disassembly push rod 6; the end of the disassembly push rod forms a backing part, which is a conical or hemispherical structure.

[0060] The specific replacement method for the new structure of the extrusion die mentioned above includes the following steps.

[0061] During the initial assembly of the mold core 2 and the die 3 onto the mold base 1, the mold core 2 is first inserted into the mounting hole 111 of the mold base 1, and automatic centering is achieved through the cooperation of the tapered surface 21 of the mold core 2 and the tapered structure of the mounting hole 111; then, the die 3 is assembled onto the mold base 1 through the mounting adjustment assembly 4, and the corresponding adjusting bolt 44 is rotated to adjust the posture of the pressure sleeve 42 so that the axis of the positioning guide hole 421 is collinear with the axis of the mounting hole 111.

[0062] During the replacement of mold core 2 and die 3, the pressure cap is first removed. Then, the removal push rod 6 is inserted into the through installation channel 11 and presses against the inner end of the mold core 2. By applying pressure to the removal push rod 6, the mold core 2 is disengaged from the mounting hole 111 and, together with the die 3, is disengaged from the pressure sleeve 42. The new mold core 2 is inserted into the mounting hole 111 of the mold base 1 to achieve automatic centering, and the new die 3 is installed into the positioning guide hole 421 to achieve automatic centering. Finally, the pressure cap is installed to complete the replacement operation.

[0063] Specifically, for die 3, during initial installation, die 3 is assembled onto die base 1 using adjustment assembly 4 to ensure that die 3, die core 2, and its axis are collinear. During this process, the posture of die 3 needs to be adjusted, which is achieved by adjusting the pressure sleeve 42 using adjusting bolts 44. Specifically, the pressure sleeve 42 and die 3 are automatically aligned by the engagement of the positioning guide hole 421 within the pressure sleeve 42 with the cylindrical positioning surface 31 on the outer surface of the die 3. When the pressure sleeve 42 is initially assembled onto die base 1, rotating the adjusting bolts 44 at different positions adjusts the pressure sleeve 42, thereby indirectly adjusting the die 3 to ensure that the axis of the pressure sleeve 42 is collinear with the axis of the die core 2, and consequently, the axis of the die 3 is collinear with the axis of the die core 2.

[0064] When replacing the mold core 2 and the die 3 later, it is only necessary to remove the pressure ring 43 to release the restriction on the die 3. Then, insert the disassembly push rod 6 from the end facing away from the mounting hole 111 into the through mounting channel 11 so that the disassembly push rod 6 abuts against the mold core 2. By knocking the disassembly push rod 6, the mold core 2 is disengaged from the mounting hole 111 and at the same time, the die 3 is pushed out of the pressure sleeve 42.

[0065] During assembly of the new die core 2 and die 3, the die core 2 still relies on its own tapered surface 21 to guide and align with the mounting hole 111. After self-alignment, the die core 2 needs to be securely fitted into the mounting hole 111. To achieve this, a protruding locking protrusion 22 can be formed on the surface of the tapered surface 21 away from the inner end face of the die core 2. After the die core 2 is assembled, the locking protrusion 22 will be locked in the mounting hole 111. At this time, a surface contact is formed between the tapered surface 21 and the wall of the mounting hole 111, while a line contact is formed between the edge of the locking protrusion 22 and the mounting hole 111. On the one hand, the surface contact between the tapered surface 21 and the mounting hole 111 ensures that the die core 2 automatically aligns; on the other hand, the line contact between the locking protrusion 22 and the mounting hole 111 ensures that the die core 2 is locked and fixed in the mounting hole 111 to ensure that its position remains unchanged during the extrusion process. Of course, in order to further improve the stability of the mounting, the surface of the mounting protrusion 22 and the mounting hole 111 are fitted together by an interference fit to ensure the reliability of the connection between the two.

[0066] As for the die 3, since the pressure sleeve 42 is not removed from the die base 1, the positioning guide hole 421 formed by the pressure sleeve 42 always remains collinear with the axis of the mounting hole 111. When the new die 3 is assembled, the die 3 relies on its own cylindrical positioning surface 31 to cooperate with the positioning guide hole 421 of the pressure sleeve 42. After the die 3 is assembled in place, the axis of the die 3 will automatically become collinear with the axis of the mounting hole 111, thus eliminating the need for adjustment by adjusting bolt 44.

[0067] In this way, after initial installation, the axis of the material flow channel 12, the axis of the mounting hole 111, the axis of the mold core 2, the axis of the cylindrical positioning surface 31, and the axis of the cylindrical positioning surface 4210 are all collinear with the axis of the mounting hole 111. When replacing the mold core 2 and the die 3 later, automatic alignment can be achieved by relying on the mounting hole 111 and the positioning guide hole 421 of the pressure sleeve 42, thus eliminating the need for adjustment during subsequent replacements.

[0068] Furthermore, a disassembly insertion hole 112 is formed at the other end of the through mounting channel 11, and the opening size of the mounting hole 111 is larger than the opening size of the disassembly insertion hole 112; the inner end face of the mold core 2 is exposed in the disassembly insertion hole 112.

[0069] Specifically, to facilitate the disassembly of the mold core 2 and the die 3, a stepped surface is formed at the connection between the mounting hole 111 and the disassembly insertion hole 112 formed in the through mounting channel 11, and the inner end face of the mold core 2 is exposed in the disassembly insertion hole 112. In this way, when the disassembly push rod 6 is inserted into the through mounting channel 11, the disassembly push rod 6 can abut against the end of the mold core 2 for easy disassembly.

[0070] Furthermore, the positioning guide hole 421 is a first stepped hole, in which a first stepped surface 4213 is formed. The first stepped hole has a first positioning hole section 4211 and a second positioning hole section 4212. The size of the first positioning hole section 4211 is larger than the size of the second positioning hole section 4212. The cylindrical positioning surface 4210 is formed in the second positioning hole section 4212. The pressure ring 43 is detachably mounted on the first stepped surface 4213.

[0071] Specifically, to facilitate the installation and fixing of the pressure ring 43, the positioning guide hole 421 forms a first stepped hole, and the corresponding first stepped surface 4213 is used for the installation and fixing of the pressure ring 43. The pressure ring 43 can be fixed on the first stepped surface 4213 by screws or bolts. The die 3 mates with the cylindrical positioning surface 4210 formed in the second positioning hole section 4212.

[0072] Preferably, the connection between the second positioning hole segment 4212 and the first positioning hole segment 4211 is formed with a chamfered structure 4214. Specifically, during the process of installing the mold 3, the mold 3 is first inserted into the first positioning hole segment 4211 with a larger diameter, and then, guided by the chamfered structure 4214, the mold 3 can smoothly enter the second positioning hole segment 4212.

[0073] Furthermore, a second stepped hole is formed on the flange cover 41, and a second stepped surface is formed in the second stepped hole. The second stepped hole has a first fixing hole section 412 and a second fixing hole section 413. The size of the first fixing hole section 412 is smaller than the size of the second fixing hole section 413. The pressure sleeve 42 is located in the second fixing hole section 413 and abuts against the second stepped surface.

[0074] Specifically, the pressure sleeve 42 is installed in the second fixing hole section 413 of the flange cover 41 and positioned by the second stepped surface. After the flange cover 41 is fixed to the mold base 1 by the fixing bolts, the cover is sandwiched between the second stepped surface and the mold base 1. A gap is formed between the outer circumference of the cover and the second fixing hole section 413, which facilitates the adjustment of the cover's posture by adjusting the bolts 44.

[0075] Furthermore, a third step surface 422 is formed on the outer peripheral surface of the pressure sleeve 42, and the third step surface 422 is in contact with the second step surface.

[0076] Specifically, the pressure sleeve 42 will be abutted against the second step surface of the flange cover 41 through the third step surface 422 to achieve positioning and assembly of the two.

[0077] Preferably, a first annular groove 423 is provided on the third step surface 422, and a second annular groove 424 is provided on the inner end surface of the pressure sleeve 42.

[0078] Specifically, in order to facilitate the operator to indirectly adjust the coaxiality of the die 3 through the pressure sleeve 42, a first annular groove 423 and a second annular groove 424 are respectively provided on both sides of the pressure sleeve 42. The annular grooves on both sides can reduce the contact area between the pressure sleeve 42 and the flange cover 41 and the die base 1. Thus, when the pressure sleeve 42 is adjusted by the circumferential adjusting bolt 44, the friction between the pressure sleeve 42 flange cover 41 and the die base 1 can be reduced, so as to facilitate the operator to quickly adjust the position of the pressure sleeve 42.

[0079] Based on the above technical solution, optionally, the mold base 1 includes an outer shell, an inner core 14, and at least one sleeve 15. The outer shell is fitted over the outer side of the inner core 14, and the sleeve 15 is sandwiched between the outer shell and the inner core 14. The sleeve 15 forms multiple material flow channels 12 at intervals between the outer shell and the inner core 14. The side wall of the outer shell is provided with multiple feed ports, and the feed ports are connected to the corresponding material flow channels 12. The through installation channel 11 is formed in the inner core 14.

[0080] Specifically, the feed inlet is located on the outer wall of the outer shell to meet the feeding requirements of different material flow channels 12, and a through installation channel 11 is reserved for disassembling the mold core 2.

[0081] Furthermore, to accommodate the addition of color marking lines to the surface of the extruded water supply pipe without requiring additional separate color marking equipment, the extrusion die also includes a color marking ring 5. The inner end face of the color marking ring 5 is provided with a feeding groove 51 and a discharge channel 52. The feeding groove 51 and the discharge channel 52 are connected, and the discharge channel 52 extends to the inner edge of the color marking ring 5. The color marking ring 5 is fitted around the outside of the die core 2 and abuts against the end face of the die base 1. The feeding groove 51 and the die base 1 form a feeding cavity, and the discharge channel 52 and the die base 1 form a discharge channel, which is connected to the extrusion channel 20. The die base 1 is provided with an auxiliary feeding port 16, which is connected to the feeding cavity.

[0082] Specifically, by adding a color mark ring 5 between the pressure sleeve 42 and the die base 1, the feed groove 51 and the discharge guide groove 52 provided on the color mark ring 5 will cooperate with the end face of the die base 1 to form a feed cavity and a discharge guide channel, and the discharge guide channel will connect to the extrusion channel 20. In this way, during the process of extruded materials flowing out from multiple material channels 12 converging into the extrusion channel 20 for continued extrusion and conveying, the material with color marking function injected into the feed cavity by the auxiliary feeding port 16 flows into the extrusion channel 20 through the discharge guide channel and merges into the surface of the material output from the outermost material channel 12. In this way, a corresponding color mark line will be formed on the outer surface of the plastic tube extruded from the extruder head.

[0083] As needed, multiple discharge channels 52 can be provided on the inner end face of the color mark ring 5, thereby forming multiple color mark lines on the outer surface of the plastic tube.

[0084] In another embodiment of this application, an extruder is also provided, comprising an extruder body and a die head disposed on the extruder body, the die head employing the aforementioned extrusion die.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water supply pipe extrusion processing system, comprising an extruder having an extrusion head, characterized in that, It also includes an extrusion die; the extrusion die includes a die base, a die core, and a die; the die base is wrapped with an electric heating belt, the die base is provided with a mounting hole, a material flow channel is formed inside the die base, the material flow channel is fitted outside the mounting hole, the die base is also provided with a feeding port, the feeding port is connected to the material flow channel; the inner surface of the die is provided with multiple first forming grooves, the multiple first forming grooves are distributed around the axis of the die; The die core is inserted into the mounting hole, the die is fitted onto the die core, and an extrusion channel is formed between the die and the die core. The material flow channel is connected to the extrusion channel. The first forming groove is configured to form ribs on the outer wall of the tube body extruded by the extrusion die. In addition, the extrusion head is connected to the feed port. The mold base has a through mounting channel, one end of which forms the mounting hole. The mounting hole has a conical structure. The outer peripheral surface of the mold core has a conical surface that matches the mounting hole. The outer peripheral surface of the die has a cylindrical positioning surface. The extrusion die further includes an installation and adjustment assembly, which includes a flange cover, a pressure sleeve, a pressure ring, and multiple adjusting bolts. The flange cover has multiple adjusting threaded through holes on its outer circumference. The pressure sleeve has a positioning guide hole, and the inner surface of the positioning guide hole forms a cylindrical positioning surface that matches the cylindrical positioning surface. The adjusting bolts are threaded into the adjusting threaded through holes. The pressure ring is detachably mounted on the end face of the pressure sleeve. The flange cover is fitted over the pressure sleeve and the pressure ring. The adjusting bolts abut against the outer circumferential surface of the pressure sleeve. The tapered surface abuts against the wall of the mounting hole. The flange cover is mounted on the die base. The die is inserted into the positioning guide hole and sandwiched between the pressure ring and the die base. Furthermore, during the process of inserting the mold core into the mounting hole, the conical surface and the mounting hole cooperate to guide and achieve self-alignment, so that the axis of the mold core is collinear with the axis of the mounting hole. A protruding locking protrusion is formed on the surface of the conical surface away from the inner end face of the mold core, and the locking protrusion will be locked in the mounting hole. The positioning guide hole formed by the pressure sleeve always remains collinear with the axis of the mounting hole. The die relies on its own cylindrical positioning surface to cooperate with the positioning guide hole of the pressure sleeve. After the die is assembled in place, the axis of the die will automatically become collinear with the axis of the mounting hole.

2. The water supply pipe extrusion processing system according to claim 1, characterized in that, Multiple second forming grooves are provided on the outer surface of the mold core, and the multiple second forming grooves are distributed around the axis of the mold core; The second forming groove is configured to form ribs on the inner wall of the tube body extruded through the extrusion die.

3. The water supply pipe extrusion processing system according to claim 1, characterized in that, The first forming groove has a straight section and a curved section; the curved section and the straight section are arranged sequentially along the material output direction of the extrusion channel.

4. A water supply pipe extrusion processing system, comprising an extruder having an extrusion head, characterized in that, It also includes an extrusion die; the extrusion die includes a die base, a die core, and a die head; the die base is wrapped with an electric heating belt, the die base is provided with a mounting hole, a material flow channel is formed inside the die base, the material flow channel is fitted outside the mounting hole, the die base is also provided with a feeding port, the feeding port is connected to the material flow channel; the outer surface of the die core is provided with multiple third forming grooves, the multiple third forming grooves are distributed around the axis of the die core; The die core is inserted into the mounting hole, the die is fitted onto the die core, and an extrusion channel is formed between the die and the die core. The material flow channel is connected to the extrusion channel. The third forming groove is configured to form ribs on the inner wall of the tube body extruded by the extrusion die. In addition, the extrusion head is connected to the feed port. The mold base has a through mounting channel, one end of which forms the mounting hole. The mounting hole has a conical structure. The outer peripheral surface of the mold core has a conical surface that matches the mounting hole. The outer peripheral surface of the die has a cylindrical positioning surface. The extrusion die further includes an installation and adjustment assembly, which includes a flange cover, a pressure sleeve, a pressure ring, and multiple adjusting bolts. The flange cover has multiple adjusting threaded through holes on its outer circumference. The pressure sleeve has a positioning guide hole, and the inner surface of the positioning guide hole forms a cylindrical positioning surface that matches the cylindrical positioning surface. The adjusting bolts are threaded into the adjusting threaded through holes. The pressure ring is detachably mounted on the end face of the pressure sleeve. The flange cover is fitted over the pressure sleeve and the pressure ring. The adjusting bolts abut against the outer circumferential surface of the pressure sleeve. The tapered surface abuts against the wall of the mounting hole. The flange cover is mounted on the die base. The die is inserted into the positioning guide hole and sandwiched between the pressure ring and the die base. Furthermore, during the process of inserting the mold core into the mounting hole, the conical surface and the mounting hole cooperate to guide and achieve self-alignment, so that the axis of the mold core is collinear with the axis of the mounting hole. A protruding locking protrusion is formed on the surface of the conical surface away from the inner end face of the mold core, and the locking protrusion will be locked in the mounting hole. The positioning guide hole formed by the pressure sleeve always remains collinear with the axis of the mounting hole. The die relies on its own cylindrical positioning surface to cooperate with the positioning guide hole of the pressure sleeve. After the die is assembled in place, the axis of the die will automatically become collinear with the axis of the mounting hole.

5. The water supply pipe extrusion processing system according to any one of claims 1-4, characterized in that, The electric heating band is provided with connecting rods at both ends, and connecting rods are provided with connecting holes. Connecting bolts pass through the connecting holes of two adjacent connecting rods and are threaded with fastening nuts.

6. The water supply pipe extrusion processing system according to any one of claims 1-4, characterized in that, The electric heating belt is provided with at least one clearance hole, and the extrusion head passes through the clearance hole at the corresponding position and connects to the feed port.

7. The water supply pipe extrusion processing system according to any one of claims 1-4, characterized in that, The other end of the through-mounting channel forms a disassembly insertion hole, and the opening size of the mounting hole is larger than the opening size of the disassembly insertion hole; the inner end face of the mold core is exposed in the disassembly insertion hole.

8. The water supply pipe extrusion processing system according to claim 7, characterized in that, It also includes a disassembly push rod; the end of the disassembly push rod forms a support part, which is a conical structure or a hemispherical structure.

9. The water supply pipe extrusion processing system according to any one of claims 1-4, characterized in that, The flange cover has a second stepped hole, and a second stepped surface is formed in the second stepped hole. The second stepped hole has a first fixed hole section and a second fixed hole section. The size of the first fixed hole section is smaller than the size of the second fixed hole section. The pressure sleeve is located in the second fixed hole section and abuts against the second stepped surface.

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