A quick cooling forming device for automatic production of PE pipes

Abstract

The present application relates to PE pipe forming device technical field, especially to a kind of PE pipe automatic production with quick cooling forming device.Its technical scheme includes PE pipe and the extruder for PE pipe extrusion forming and the conveying device for PE pipe conveying, conveying belt is arranged in the conveying device, the mounting bracket is arranged along the conveying direction of PE pipe, water cooling assembly and air cooling machine for the auxiliary cooling forming of PE pipe are installed on the mounting bracket;The water cooling assembly includes annular cooling cover, which is arranged at the extrusion end of the extruder to cool and shape the PE pipe quickly.The present application realizes synchronous cooling inside and outside pipe by annular cooling part and inner wall cooling part, double cooling structure can quickly solidify extrusion end, greatly improve the extrusion resistance of contact end, completely avoid the deformation caused by cooling not in time, ensure the dimensional accuracy such as pipe roundness, wall thickness uniformity, guarantee subsequent conveying and processing quality.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PE pipe forming devices, and in particular to a rapid cooling forming device for PE pipe automatic production. BACKGROUND

[0002] In the PE pipe automatic production process, rapid cooling and setting after extrusion molding is a key link for determining pipe quality and production efficiency. When the PE pipe is extruded from the extruder die, it is in a high-temperature molten or semi-molten state, and needs to be rapidly cooled to below the glass transition temperature through a cooling device to fix the pipe shape, ensure the size accuracy, and avoid deformation, collapse and other problems in the subsequent conveying or cutting process. The patent "CN215359806U" proposes a PE pipe cooling device, which cools the PE pipe through twice air cooling and once water cooling, and can remove impurities and dirt on the surface of the PE pipe, and also plays a role in cleaning the surface of the PE pipe, and the multiple cooling improves the cooling efficiency and quality.

[0003] The above device effectively cools the PE pipe in conveying, but the contact end of the PE pipe, i.e. the part just extruded, has not formed enough physical strength, and when in contact with the conveying device, the support force applied by the conveying device will directly cause plastic deformation of the pipe contact part. The existing device lacks a means for timely and rapid cooling and setting of the extrusion end, and in view of the above reasons, the application proposes a rapid cooling forming device for PE pipe automatic production. SUMMARY

[0004] The purpose of the present application is to solve the problem that the existing device cannot rapidly cool the extrusion end of the pipe, and the rigid contact of the pipe with the contact end causes extrusion deformation.

[0005] The technical solution of the present application is a rapid cooling forming device for PE pipe automatic production, comprising a PE pipe, an extruder for PE pipe extrusion molding, and a conveying device for PE pipe conveying, wherein the conveying device is provided with a conveying belt, the conveying device is provided with a mounting bracket along the conveying direction of the PE pipe, and the mounting bracket is provided with a water cooling assembly and an air cooler for auxiliary cooling and molding of the PE pipe.

[0006] The water cooling assembly comprises an annular cooling cover arranged at the extrusion end of the extruder for rapid cooling and setting of the PE pipe.

[0007] The water cooling assembly further comprises inner wall cooling nozzles arranged on both sides of the PE pipe extrusion head, liquid sprayed from the liquid outlet end of the inner wall cooling nozzles contacts with the inner wall of the PE pipe extrusion head; the other ends of the two groups of inner wall cooling nozzles are provided with adjusting assemblies for driving the inner wall cooling nozzles to move along the extrusion direction of the PE pipe.

[0008] The adjusting assembly comprises L-shaped mounting seats for mounting the inner wall cooling nozzles, the top portions of the two groups of L-shaped mounting seats are fixedly connected with a slide rod penetrating through the mounting bracket, and a drive cylinder for driving the slide rod is fixedly installed on one side of the slide rod.

[0009] Optionally, a waste liquid collecting groove with a width and a length greater than those of the conveying belt is arranged below the conveying device, and a plurality of liquid falling holes for the flow of the cooling liquid are formed in the conveying belt.

[0010] Optionally, the mounting bracket comprises a first cooling bracket, a second cooling bracket and a third cooling bracket arranged in sequence, the air cooling machines are arranged in three groups and are respectively installed on one side of the first cooling bracket, the second cooling bracket and the third cooling bracket, the air outlet end of the air cooling machine is connected with a transversely arranged strip-shaped air outlet cover, a plurality of air outlet holes are formed in the strip-shaped air outlet cover along the length direction thereof, and the three groups of air cooling machines are independently controlled.

[0011] Optionally, the water cooling assembly further comprises a total liquid supply pump fixedly installed on the top of the first cooling bracket, a main liquid supply pipe is connected to the total liquid supply pump and located above the first cooling bracket, the second cooling bracket and the third cooling bracket, a plurality of water outlet branch pipes are arranged below the main liquid supply pipe, the water outlet branch pipes respectively penetrate through the top of the first cooling bracket, the second cooling bracket and the third cooling bracket, and a branch cooling pipe parallel to the strip-shaped air outlet cover is connected below the water outlet branch pipes, a plurality of groups of atomizing nozzles are arrayed and installed on the branch cooling pipe along the length direction thereof.

[0012] Optionally, the total liquid supply pump is further connected with a main liquid supply hose and an auxiliary liquid supply hose, the main liquid supply hose and the auxiliary liquid supply hose are hoses, one end of the main liquid supply hose is connected with the annular cooling cover, and the auxiliary liquid supply hose is arranged in two groups and is connected with the water supply interfaces of the two groups of inner wall cooling nozzles.

[0013] Optionally, a circular ring-shaped water flow channel is formed in the inner wall of the annular cooling cover, a plurality of groups of water outlet nozzles are arrayed and installed on the inner wall of the annular cooling cover along the circumferential direction thereof, and a bracket is further connected to one side of the annular cooling cover.

[0014] Optionally, the L-shaped mounting seat has an “L” shape structure, an adjusting groove is formed in the transverse end of the L-shaped mounting seat, an adjusting block is slidably arranged in the adjusting groove, a base is installed at one end of the adjusting block, the base is installed at one end of the inner wall cooling nozzle, and the base is a universal adjusting base.

[0015] Optionally, one side of the adjusting block is provided with a micro-cylinder fixedly connected with the inner wall of one end of the adjusting groove;

[0016] The vertical end of the L-shaped mounting seat is fixedly connected with an extrusion rod.

[0017] Optionally, the inner walls of the two sides of the primary cooling support are provided with elastic knocking members, the elastic knocking members comprise two groups of sleeves, metal flexible rods are arranged through the two groups of sleeves, knocking balls are fixedly connected to the bottoms of the metal flexible rods, and the knocking balls are arranged in abutment with the conveying belt.

[0018] The outer ring of the sleeve is further sleeved with a spring.

[0019] Optionally, the top of the primary cooling support is provided with two groups of sliding grooves, the sliding rods are arranged through the sliding grooves and are arranged in sliding connection with the inner walls of the sliding grooves, and a pressure sensor is arranged in the sliding groove.

[0020] Compared with the prior art, the present application has the following beneficial technical effects:

[0021] 1. The annular cooling cover of the annular cooling member uniformly and evenly wraps the outer wall of the pipe material at 360°, the inner wall cooling nozzle of the cooling pipe on the two sides of the extrusion head end realizes the temperature reduction treatment of the inner wall of the PE pipe material, the overall temperature can be rapidly reduced below the glass transition temperature before the pipe material falls into the conveying device, the extrusion resistance of the contact end is greatly improved, plastic deformation caused by untimely cooling is completely avoided, and the size precision such as pipe roundness and wall thickness uniformity is ensured.

[0022] 2. The air cooling module of the present application is independently controlled in three groups, can be started and stopped as needed according to the pipe material specifications and the extrusion speed, the inner wall cooling nozzle realizes the synchronous movement of the conveying direction movement and the jet position through the driving assembly adjusting assembly, realizes the purpose of fully cooling the first end of the continuously extruded and moved PE pipe material, and the water cooling and air cooling are designed to be switched as needed, which can ensure rapid cooling and avoid energy waste and pipe surface residual moisture problems.

[0023] 3. The conveying device of the present application realizes cooling waste liquid recovery through the liquid falling hole and the liquid receiving groove waste liquid collecting groove, avoids equipment failure caused by accumulation, and realizes deformation and rebound through the moving extrusion rod, so that the conveying belt is knocked by the knocking ball, and the residual moisture on the conveying belt is shaken off.

[0024] In summary, the present application realizes synchronous temperature reduction of the pipe material inside and outside through the annular cooling member and the inner wall cooling member, the double cooling structure can quickly solidify the extrusion end, greatly improves the extrusion resistance of the contact end, completely avoids deformation caused by untimely cooling, ensures the size precision such as pipe roundness and wall thickness uniformity, and guarantees the subsequent conveying and processing quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes;

[0026] Figure 2 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes; Figure 1

[0027] Figure 3 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes; Figure 1

[0028] Figure 4 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes;

[0029] Figure 5 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes;

[0030] Figure 6 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes;

[0031] Figure 7 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes;

[0032] Figure 8 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes;

[0033] Figure 9 It is a front view structural schematic diagram of a quick cooling forming device for automatic production of PE pipes; Figure 8

[0034] Reference signs: 1, PE pipe;

[0035] 2, extruder;

[0036] 3, conveying device; 31, conveying belt;

[0037] 4, mounting bracket; 41, primary cooling bracket; 42, secondary cooling bracket; 43, tertiary cooling bracket; 410, sliding groove;

[0038] 5, water cooling assembly; 51, main liquid supply pipe; 52, sub cooling pipe; 53, atomizing nozzle; 54, total liquid supply pump; 55, main liquid supply hose; 56, auxiliary liquid supply hose; 57, inner wall cooling nozzle; 58, annular cooling cover; 59, base;

[0039] 6, air cooling machine; 61, strip-shaped air outlet cover;

[0040] 7, adjusting assembly; 71, driving cylinder; 72, sliding rod; 73, L-shaped mounting seat; 74, adjusting groove; 75, adjusting block; 76, micro cylinder; 77, extruding rod;

[0041] ​​​8, elastic knock; 81, set; 82, metal soft rod; 83, knock ball; 84, spring;

[0042] 9, waste liquid collecting groove. DETAILED DESCRIPTION

[0043] The technical solutions of the present application are further described below in combination with the drawings and specific embodiments.

[0044] As shown in the drawings, Figures 1-3 The present application provides a rapid cooling forming device for automatic production of PE pipes, which comprises a PE pipe 1, an extruder 2 for extrusion molding of the PE pipe 1, and a conveying device 3 for conveying the PE pipe 1. The conveying device 3 is provided with a conveying belt 31. A waste liquid collecting groove 9 with a width and length greater than the conveying belt 31 is arranged below the conveying device 3. A plurality of liquid falling holes for the flow of cooling liquid are formed on the conveying belt 31. In this embodiment, the liquid falling holes are arranged to collect the liquid for shower cooling. The liquid falling holes can quickly drain the residual cooling liquid on the surface of the conveying belt 31, prevent the cooling liquid from accumulating and soaking the PE pipe 1 on the surface of the conveying belt 31, and avoid surface damage or size deviation of the PE pipe 1 due to long-term contact with the liquid.

[0045] In this embodiment, referring to the drawings, Figure 4 The conveying device 3 is provided with a mounting bracket 4 along the conveying direction of the PE pipe 1. The mounting bracket 4 comprises a first cooling bracket 41, a second cooling bracket 42, and a third cooling bracket 43 arranged in sequence. The first cooling bracket 41, the second cooling bracket 42, and the third cooling bracket 43 provide mounting carriers for water cooling and air cooling components, ensure the orderly arrangement of cooling components along the pipe conveying path, and realize segmented cooling. The air cooling machine 6 is provided with three groups, which are respectively installed on one side of the first cooling bracket 41, the second cooling bracket 42, and the third cooling bracket 43. The mounting bracket 4 is provided with a water cooling component 5 and an air cooling machine 6 for auxiliary cooling and molding of the PE pipe 1. The air cooling machine 6 provides a cooling air source, which removes the heat on the surface of the pipe by air force, simultaneously realizes the drying of the pipe surface, avoids the influence of residual moisture on subsequent processing, and connects a transversely arranged strip-shaped air outlet cover 61 at the air outlet end of the air cooling machine 6. A plurality of air outlet holes are formed in the length direction of the strip-shaped air outlet cover 61. The three groups of air cooling machines 6 are independently controlled. According to the specifications, extrusion speed, or cooling requirements of the PE pipe 1, the air cooling machine of a certain stage can be started or stopped independently, the cooling intensity can be flexibly adjusted, the cooling effect can be ensured, and energy waste can be avoided.

[0046] Specifically, the PE pipe 1 is directly brought into the conveying belt 31 of the conveying device 3 after being extruded by the extruder 2 and is driven by the conveying belt 31 to move along the cooling direction; during the subsequent water cooling process, the cooling liquid sprayed to the surface of the PE pipe 1 is partially remained on the surface of the conveying belt 31, at this time, the liquid falling hole opened on the conveying belt 31 can quickly dredge the remained cooling liquid, so that the cooling liquid naturally falls into the waste liquid collecting groove 9 below through the liquid falling hole; this process not only avoids the accumulation of the cooling liquid on the surface of the conveying belt 31 to soak the PE pipe 1, prevents the surface softening and size deviation of the PE pipe 1 due to long time contact with the liquid, but also realizes the centralized recovery of the cooling liquid, which provides convenience for the subsequent recycling or treatment;

[0047] Referring to Figures 5-7 As shown in the figure, the water cooling assembly 5 includes an annular cooling cover 58 arranged at the extrusion end of the extruder 2 to quickly cool and shape the PE pipe 1, an instant cooling component specially designed for the extrusion end of the PE pipe 1, which is attached to the die outlet of the extruder 2 to ensure that the pipe is immediately brought into the cooling range after being extruded; the inner wall of the annular cooling cover 58 is provided with a circular water flow channel for storing and uniformly distributing the cooling liquid to ensure the uniformity of the cooling liquid pressure in the circumferential direction; and a plurality of water outlet nozzles are arranged on the inner wall of the annular cooling cover 58 along the circumferential direction to spray the cooling liquid to the outer wall of the PE pipe 1 from the circumferential direction, so as to realize 360° dead angle-free wrapping cooling, quickly reduce the temperature of the outer wall of the pipe, and the annular cooling cover 58 is further connected with a bracket fixedly installed thereon;

[0048] Referring to Figure 7As shown, the water cooling assembly 5 further comprises inner wall cooling nozzles 57 arranged on both sides of the extrusion head of the PE pipe 1. The liquid sprayed from the liquid outlet of the inner wall cooling nozzles 57 contacts the inner wall of the extrusion head of the PE pipe 1. The design of the outer cooling and inner softening of the PE pipe 1 directly acts on the inner wall of the PE pipe 1 to realize synchronous cooling of the inner and outer walls. The cooling liquid is directly sprayed to the inner wall of the high-temperature pipe to quickly take away the heat of the inner wall and avoid subsequent deformation caused by the unsetting of the inner wall. The water cooling assembly 5 further comprises a total liquid supply pump 54 fixedly installed on the top of the first cooling bracket 41. The total liquid supply pump 54 is connected with a main liquid supply pipe 51 located above the first cooling bracket 41, the second cooling bracket 42 and the third cooling bracket 43. A plurality of water outlet branch pipes are arranged below the main liquid supply pipe 51. The water outlet branch pipes respectively penetrate the top of the first cooling bracket 41, the second cooling bracket 42 and the third cooling bracket 43. The water outlet branch pipes are connected with a sub-cooling pipe 52 arranged in parallel with the strip-shaped air outlet cover 61. The sub-cooling pipe 52 is arrayed with a plurality of atomizing nozzles 53 along the length direction of the sub-cooling pipe 52. The atomizing nozzles 53 are arranged to realize the spray cooling of the PE pipe 1 in the conveying process. The total liquid supply pump 54 is further connected with a main liquid supply hose 55 and an auxiliary liquid supply hose 56. The main liquid supply hose 55 and the auxiliary liquid supply hose 56 are hoses. One end of the main liquid supply hose 55 is connected with the annular cooling cover 58. The auxiliary liquid supply hose 56 is arranged in two groups and is connected with the water supply interfaces of the two groups of inner wall cooling nozzles 57.

[0049] Specifically, when the PE pipe 1 is extruded from the die of the extruder 2, it first enters the annular cooling cover 58 arranged at the outlet of the die. The total liquid supply pump 54 delivers the cooling liquid to the annular water flow channel in the inner wall of the annular cooling cover 58 through the main liquid supply hose 55. After being uniformly distributed in the channel, the water flow is sprayed to the outer wall of the PE pipe 1 through the circumferentially arrayed water outlet nozzles, forming a 360° cooling liquid wrapping layer to quickly take away the heat of the outer wall of the pipe and preliminarily solidify the outer wall. At the same time, the total liquid supply pump 54 delivers the cooling liquid to the inner wall cooling nozzles 57 arranged on both sides of the extrusion head of the PE pipe 1 through the two groups of inner wall cooling nozzles auxiliary liquid supply hoses 56. The liquid outlet of the inner wall cooling nozzles 57 directly sprays the cooling liquid to the inner wall of the PE pipe 1 to realize synchronous cooling of the inner and outer walls of the pipe and ensure that the PE pipe 1 reaches the requirement of anti-extrusion rigidity before entering the conveying device.

[0050] When the PE pipe 1 moves to the subsequent cooling section along the conveying belt 31, the total liquid supply pump 54 delivers the cooling liquid to the main liquid supply pipe 51, and the main liquid supply pipe 51 delivers the cooling liquid to the sub-cooling pipes 52 at the top of the first cooling support 41, the second cooling support 42, and the third cooling support 43 through the water outlet branch pipes below, respectively. The atomizing nozzles 53 of the sub-cooling pipes 52 are arrayed along the length direction, and the cooling liquid is atomized and uniformly sprayed to the surface of the moving PE pipe 1, thereby increasing the contact area of the cooling liquid with the pipe and improving the heat exchange efficiency. The sub-cooling pipes 52 are arranged in parallel with the strip-shaped air outlet cover 61, and the spraying cooling and air drying can be cooperated to achieve the synergistic effect, thereby further reducing the pipe temperature and avoiding the influence of the residual cooling liquid on the subsequent processing, and realizing the segmented intensified cooling in the conveying process.

[0051] Referring to Figure 6 and Figure 7 As shown, the other ends of the two groups of inner wall cooling spray pipes 57 are provided with adjusting assemblies 7 for driving them to move along the extrusion direction of the PE pipe 1, and the adjusting assemblies 7 are used to move the positions of the inner wall cooling spray pipes 57, so that the extrusion head end of the PE pipe 1 is cooled by spraying while being extruded along with the extrusion operation.

[0052] The adjusting assembly 7 comprises an L-shaped mounting seat 73 for mounting the inner wall cooling spray pipe 57. The L-shaped mounting seat 73 has a "L" shape structure, and the transverse end of the L-shaped mounting seat 73 is provided with an adjusting groove 74. An adjusting block 75 is slidably arranged in the adjusting groove 74. A micro pneumatic cylinder 76 is mounted on one side of the adjusting block 75 and fixedly connected with the inner wall of one end of the adjusting groove 74. A base 59 is mounted on one end of the adjusting block 75. The base 59 is mounted with one end of the inner wall cooling spray pipe 57. The base 59 is a universal adjusting base, which has a 360° rotation and multi-angle inclination adjusting function, and can flexibly adjust the spraying angle of the inner wall cooling pipe. The top of the two groups of L-shaped mounting seats 73 is fixedly connected with a slide rod 72 penetrating through one group of mounting supports 4. The top of the first cooling support 41 is provided with two groups of sliding grooves 410. The two groups of slide rods 72 penetrate through the sliding grooves 410 and are slidably arranged with the inner walls of the sliding grooves 410. A pressure sensor is mounted in the sliding groove 410 to monitor the contact pressure between the slide rod 72 and the inner wall of the sliding groove 410 in real time, to determine whether the sliding is smooth, and to feedback the working state of the adjusting assembly to avoid the cooling failure caused by jamming. A driving pneumatic cylinder 71 is fixedly mounted on one side of the slide rod 72 for driving the slide rod 72. The vertical end of the L-shaped mounting seat 73 is fixedly connected with a pressing rod 77.

[0053] Specifically, when the PE pipe 1 continuously extrudes from the extruder 2, the driving cylinder 71 is started and drives the sliding rod 72 to slide along the sliding groove 410, and the L-shaped mounting seat 73 and the inner wall cooling spray pipe 57 move along the pipe extrusion direction. During this process, the pressure sensor in the sliding groove 410 monitors the contact pressure between the sliding rod 72 and the inner wall in real time. If the pressure is abnormal, it can be fed back in time to adjust the running state of the driving cylinder 71, so as to ensure that the inner wall cooling spray pipe 57 and the PE pipe 1 extrusion speed are synchronized, realize the effect of continuously extruding the pipe and following the cooling pipe, and avoid the cooling end from being separated from the extrusion first end due to the movement of the pipe.

[0054] For PE pipes 1 of different diameters, the adjusting groove 74 on the L-shaped mounting seat 73 cooperates with the adjusting block 75 to realize transverse position adjustment. The miniature cylinder 76 drives the adjusting block 75 to move along the adjusting groove 74, which can drive the base 59 and the inner wall cooling spray pipe 57 to approach or move away from the pipe wall. It can be self-adapted to fine-tune when there is a small deviation in the pipe diameter, so as to ensure that the cooling pipe liquid outlet end and the pipe wall maintain the best spraying distance, ensure uniform cooling effect, and at the same time, when the PE pipe 1 is completely extruded and falls on the conveying belt 31, the miniature cylinder 76 pulls the inner wall cooling spray pipe 57 to move to both sides, avoiding the end of the inner wall cooling spray pipe 57 from contacting the PE pipe 1, affecting the normal conveying of the PE pipe 1 along the conveying belt 31.

[0055] Through the connection structure of the inner wall cooling spray pipe 57 and the base 59, the spraying angle of the cooling pipe can be adjusted by 360° rotation and multi-angle inclination. Rotating the base 59 adjusts the orientation of the cooling pipe liquid outlet end, so that the cooling liquid can be accurately sprayed to the pipe wall, avoiding splashing or cooling blind area due to angle deviation, and further ensuring synchronous cooling of the pipe inside and outside.

[0056] Referring to Figure 8 and Figure 9 The two sides of the primary cooling support 41 are provided with elastic knocking members 8. The elastic knocking member 8 includes two sets of sleeves 81, and a metal flexible rod 82 is arranged in the two sets of sleeves 81. The metal flexible rod 82 is slidably lifted by the sleeves 81. The bottom of the metal flexible rod 82 is fixedly connected with a knocking ball 83. The knocking ball 83 is in contact with the upper surface of the conveying belt 31 in the normal state.

[0057] The outer circle of the sleeve 81 is further provided with a spring 84. The metal flexible rod 82 and the knocking ball 83 are hoisted and installed in combination with the spring 84, so that the positions of the metal flexible rod 82 and the knocking ball 83 are limited and cannot freely fall due to the weight.

[0058] In the embodiment, the extrusion rod 77 also moves synchronously during the continuous movement of the L-shaped mounting seat 73. The extrusion rod 77 is in contact with the metal flexible rod 82, so that the metal flexible rod 82 is deformed. Figure 9In the shown state, the spring 84 is also in a compressed state at this time, and the knocking ball 83 is not in contact with the conveying belt 31. When the sliding rod 72 moves to one end of the sliding groove 410 and is in contact with the internal pressure sensor, it indicates that the cooling of the extrusion head end of the PE pipe 1 is completed. The driving cylinder 71 is reversely driven, so that the internal wall cooling nozzle 57 and other structures are reset, and then the extrusion rod 77 is also reset. The extrusion of the metal soft rod 82 is cancelled, the metal soft rod 82 instantaneously rebounds, so that the spring 84 also rebounds. At the moment of rebound, the knocking ball 83 hits the conveying belt 31, forming a vibration, and then assisting the falling of the cooling liquid, which is collected in the waste liquid collecting groove 9.

[0059] The above specific embodiments are only optional embodiments of the present application. Based on the technical solutions of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A rapid cooling forming device for automatic production of PE pipes, comprising a PE pipe (1) and an extruder (2) for extrusion forming of the PE pipe (1) and a conveying device (3) for conveying of the PE pipe (1), wherein a conveying belt (31) is arranged in the conveying device (3), characterized in that: The conveying device (3) is provided with a mounting bracket (4) along the conveying direction of the PE pipe (1), the mounting bracket (4) comprises a first cooling bracket (41), a second cooling bracket (42) and a third cooling bracket (43) arranged in sequence, and the mounting bracket (4) is provided with a water cooling assembly (5) and an air cooling machine (6) for assisting the cooling forming of the PE pipe (1); The water cooling assembly (5) comprises an annular cooling cover (58) arranged at the extrusion end of the extruder (2) and used for rapidly cooling and shaping the PE pipe (1); The water cooling assembly (5) further comprises inner wall cooling nozzles (57) arranged on both sides of the extrusion head end of the PE pipe (1), liquid sprayed from the liquid outlet end of the inner wall cooling nozzles (57) contacts the inner wall of the extrusion head end of the PE pipe (1), and the other ends of the two groups of inner wall cooling nozzles (57) are provided with adjusting assemblies (7) for driving the inner wall cooling nozzles (57) to move along the extrusion direction of the PE pipe (1); The adjusting assembly (7) comprises L-shaped mounting seats (73) for mounting the inner wall cooling nozzles (57), the top portions of the two groups of L-shaped mounting seats (73) are fixedly connected with slide rods (72) penetrating through one group of mounting brackets (4), one side of the slide rod (72) is fixedly provided with a drive cylinder (71) for driving the slide rod (72), the vertical end of the L-shaped mounting seat (73) is fixedly connected with a pressing rod (77), the inner walls on both sides of the first cooling bracket (41) are provided with elastic knocking members (8), the elastic knocking member (8) comprises two groups of sleeves (81), metal flexible rods (82) are arranged in the two groups of sleeves (81), the bottom of the metal flexible rod (82) is fixedly connected with a knocking ball (83), the knocking ball (83) is arranged in contact with the conveying belt (31), the outer circle of the sleeve (81) is further provided with a spring (84), after the temperature of the extrusion head end of the PE pipe (1) is lowered, the drive cylinder (71) is reversely driven, the pressing rod (77) is reset, the extrusion of the metal flexible rod (82) is cancelled, the metal flexible rod (82) is instantaneously rebounded, the spring (84) is also rebounded, and the knocking ball (83) is hit with the conveying belt (31) at the moment of rebounding, so that vibration is formed.

2. The rapid cooling forming device for automatic production of PE pipes according to claim 1, characterized in that, A waste liquid collecting groove (9) with a width and a length greater than those of the conveying belt (31) is arranged below the conveying device (3), and a plurality of liquid falling holes for the flow of cooling liquid are formed in the conveying belt (31).

3. The rapid cooling forming device for automatic production of PE pipes according to claim 1, characterized in that, The air cooling machine (6) is provided with three groups, and is arranged on one side of the first cooling bracket (41), the second cooling bracket (42) and the third cooling bracket (43) respectively, the air outlet end of the air cooling machine (6) is connected with a transversely arranged strip-shaped air outlet cover (61), a plurality of air outlet holes are formed in the strip-shaped air outlet cover (61) along the length direction of the strip-shaped air outlet cover (61), and the three groups of air cooling machines (6) are independently controlled.

4. The rapid cooling forming device for automatic production of PE pipes according to claim 3, characterized in that, The water cooling assembly (5) further comprises a total liquid supply pump (54) fixedly installed on the top of the first cooling support (41), a main liquid supply pipe (51) connected to the total liquid supply pump (54) and located above the first cooling support (41), the second cooling support (42) and the third cooling support (43), a plurality of water outlet branch pipes arranged below the main liquid supply pipe (51), the water outlet branch pipes penetrating through the top of the first cooling support (41), the second cooling support (42) and the third cooling support (43) respectively, and a sub-cooling pipe (52) arranged in parallel with the strip-shaped air outlet cover (61) and connected to the water outlet branch pipes below.

5. The rapid cooling forming device for automatic production of PE pipes according to claim 4, characterized in that, The total liquid supply pump (54) is further connected with a main liquid supply hose (55) and an auxiliary liquid supply hose (56), the main liquid supply hose (55) and the auxiliary liquid supply hose (56) are hoses, one end of the main liquid supply hose (55) is connected with the annular cooling cover (58), the auxiliary liquid supply hose (56) is provided with two groups and is connected with the water supply interfaces of the two groups of inner wall cooling spray pipes (57) respectively.

6. The rapid cooling forming device for automatic production of PE pipes according to claim 1, characterized in that, The annular cooling cover (58) is provided with a circular annular water flow channel in the inner wall, and a plurality of water outlet nozzles are arranged in the inner wall of the annular cooling cover (58) along the circumferential direction, and a support fixedly installed on one side of the annular cooling cover (58) is further connected.

7. The rapid cooling forming device for automatic production of PE pipes according to claim 6, characterized in that, The L-shaped mounting seat (73) is in the shape of "L", and the horizontal end of the L-shaped mounting seat (73) is provided with an adjusting groove (74), and an adjusting block (75) is slidably arranged in the adjusting groove (74), one end of the adjusting block (75) is provided with a base (59), and the base (59) is installed at one end of the inner wall cooling spray pipe (57), and the base (59) is a universal adjusting base.

8. The rapid cooling forming device for automatic production of PE pipes according to claim 7, characterized in that, One side of the adjusting block (75) is provided with a micro-cylinder (76) fixedly connected with the inner wall of one end of the adjusting groove (74).

9. The rapid cooling forming device for automatic production of PE pipes according to claim 1, characterized in that, The top of the first cooling support (41) is provided with two groups of sliding grooves (410), and the two groups of sliding rods (72) penetrate through the sliding grooves (410) and are slidably arranged with the inner walls of the sliding grooves (410), and a pressure sensor is installed in the sliding groove (410).

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