Large-diameter PE pipe extrusion sizing box

Abstract

The utility model relates to the technical field of PE pipe production, in particular to a large-diameter PE pipe extrusion sizing box which comprises a sizing box body and a bottom plate, and further comprises a sizing assembly which is arranged in the sizing box body and enables PE pipes to be output according to the unified specification. And the clamping assembly is arranged on one side of the moving block and can be used for limiting the PE pipe fitting output from the inside of the sizing assembly. According to the utility model, high-temperature liquid polyethylene can be extruded into the sizing assembly in the sizing box body according to the actually required specification, and then the speed of the PE pipe fitting is accelerated through the cooling assembly; the driving assembly and the transmission assembly are used for driving the multiple clamping assemblies to get close to and make contact with the PE pipe, the pipe head of the PE pipe is limited, in this way, the situation that the large-diameter PE pipe expands and deforms due to the fact that the large-diameter PE pipe loses limitation of the sizing assembly is avoided, and the forming quality and the forming effect of the PE pipe are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PE pipe production, in particular to an extrusion sizing box for large-diameter PE pipes. Background Technique

[0002] PE is the English abbreviation of polyethylene. It is a thermoplastic resin with high crystallinity and non-polarity. PE pipes made mainly of polyethylene have the characteristics of high strength, corrosion resistance, and non-toxicity. Therefore, they are widely used in the field of water supply pipe manufacturing and are also ideal materials for municipal water supply pipe networks. A sizing box is used in the process of manufacturing PE pipes, and its function is to produce pipes with consistent specifications according to the required length.

[0003] When the existing extrusion sizing box for large-diameter PE pipes is in use, first, the extruder will extrude high-temperature liquid polyethylene into the sizing box. Then, the polyethylene is cooled and formed through the gap between the sizing inner rod and the sizing outer tube. When the cooled and formed PE pipe is output from the outlet end of the sizing box, due to the loss of the limitation of the sizing inner rod and the sizing outer tube, and the large temperature difference between the inside and outside of the sizing box, the PE pipe is very likely to deform. Especially when producing some large-diameter PE pipes, the larger the diameter, the greater the corresponding expansion amount, which greatly affects the forming quality and forming effect of PE pipe fittings and is not conducive to the progress of PE pipe production work. Content of the Utility Model

[0004] The purpose of the utility model is to provide an extrusion sizing box for large-diameter PE pipes to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An extrusion sizing box for large-diameter PE pipes, including a sizing box body and a bottom plate. At both ends of the bottom of the sizing box body, first support plates are vertically installed, and the bottom ends of the first support plates are connected to the bottom plate. It also includes:

[0006] A sizing component arranged inside the sizing box body to output PE pipe fittings according to a unified specification. A cooling component is arranged below the sizing box body to accelerate the forming speed of the PE pipe inside the sizing component. One end of the sizing box body is fixedly connected with a first fixed cylinder on the outside. One side of the first fixed cylinder is fixedly connected with a second support plate. There are no less than three limiting cavities on one side of the second support plate. A guide rod is fixedly installed inside each limiting cavity, and a moving block is slidably connected to the outside of the guide rod;

[0007] A clamping component arranged on one side of the moving block to limit the PE pipe fittings output from the inside of the sizing component. The outside of the first fixed cylinder is rotatably connected with a second fixed cylinder. A transmission component is arranged on the outside of the second fixed cylinder to drive the clamping component to reciprocally slide along the inner wall of the limiting cavity. A driving component is arranged at the bottom of the first fixed cylinder to provide a rotational force for the second fixed cylinder.

[0008] Preferably, the sizing component includes a sizing outer tube fixed inside the sizing box body. A cooling cavity for the coolant to flow is provided between the sizing outer tube and the sizing box body. A plurality of heat conducting fins are symmetrically arranged inside the cooling cavity. The heat conducting fins are designed in a ring shape, and a plurality of heat conducting fins are equidistantly distributed along the axis direction of the sizing box body. The heat conducting fins are fixedly installed on the outer side of the sizing outer tube. One side of the sizing box body is provided with an extruder body, the bottom of the extruder body is connected to the bottom plate, the discharge port of the extruder body is connected to the feed port of the sizing box body, and a sizing inner rod is coaxially arranged inside the sizing outer tube, and one end of the sizing inner rod is connected to the extruder body.

[0009] Preferably, the clamping component includes a strip-shaped plate arranged on one side of the limiting cavity. One side of the strip-shaped plate is connected to the moving block, the bottom end of the strip-shaped plate is fixedly connected with a U-shaped seat, and a guiding roller is arranged inside the U-shaped seat. The guiding roller is respectively rotationally connected to both sides of the inner wall of the U-shaped seat through bearings.

[0010] Preferably, side plates are vertically installed on both sides of the strip-shaped plate. One side of the side plate is fixedly connected with a limiting block, a limiting groove corresponding to the limiting block is opened outside the limiting cavity, and the limiting block is located inside the limiting groove.

[0011] Preferably, the transmission component includes a connecting rod arranged outside the second fixed cylinder. Columns are vertically installed on one side of the moving block and one side of the second fixed cylinder. A sleeve is rotationally connected to the outside of the column, and the connecting rod is respectively connected to the sleeves at both ends.

[0012] Preferably, the driving component includes a motor fixed on the top of the first support plate. A toothed ring is fixedly connected to one side of the second fixed cylinder, a gear is meshed and connected to the outside of the toothed ring, and the output end of the motor penetrates through the first support plate and is connected to the gear.

[0013] Preferably, the temperature reduction component includes a liquid storage tank fixed on the top of the bottom plate. A liquid extraction pump is fixedly installed on the top of the liquid storage tank. The liquid inlet of the liquid extraction pump is communicated with the inside of the liquid storage tank. The liquid outlet of the liquid extraction pump is connected with a liquid outlet pipe, and the top end of the liquid outlet pipe is connected to the sizing box body. A chiller is arranged on one side of the liquid storage tank and is fixedly installed on the chiller. The liquid inlet of the chiller is connected with a liquid inlet pipe, and the top end of the liquid inlet pipe is connected to the sizing box body. The liquid outlet of the chiller is communicated with the inside of the liquid storage tank through a pipeline. A liquid injection port is arranged on the top of one side of the liquid storage tank, and a solenoid valve is installed inside the liquid injection port.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] According to the specifications required in practice, the present utility model can extrude high-temperature liquid polyethylene into the sizing assembly inside the sizing box body. Then, the cooling assembly is used to accelerate the speed of the PE pipe fittings. After the pipe head of the cooled and formed PE pipe is output from the discharge port of the sizing box body, the driving assembly and the transmission assembly are used to drive a plurality of clamping assemblies to approach and contact the PE pipe, and limit the pipe head of the PE pipe, thus avoiding the situation that the large-diameter PE pipe expands and deforms due to the loss of the restriction of the sizing assembly, and improving the forming quality and forming effect of the PE pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the sizing assembly of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the clamping assembly of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the transmission assembly of the present utility model.

[0020] Figure 5 is a schematic structural diagram of the driving assembly of the present utility model.

[0021] In the figure: 1, sizing box body; 2, first support plate; 3, bottom plate; 4, sizing assembly; 41, sizing outer pipe; 42, cooling cavity; 43, heat conduction fin; 44, sizing inner rod; 45, extruder body; 5, cooling assembly; 51, chiller; 52, liquid storage tank; 53, liquid pumping pump; 54, liquid injection port; 55, liquid outlet pipe; 56, liquid inlet pipe; 6, second support plate; 7, limiting cavity; 8, guide rod; 9, moving block; 10, clamping assembly; 101, strip-shaped plate; 102, U-shaped seat; 103, guiding roller; 11, side plate; 12, driving assembly; 121, motor; 122, gear; 123, gear ring; 13, first fixed cylinder; 14, second fixed cylinder; 15, transmission assembly; 151, column; 152, sleeve; 153, connecting rod; 16, limiting block; 17, limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in combination with the attached drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0023] Please refer to Figures 1-5As shown in the figure, a sizing box for extruding large-diameter PE pipes includes a sizing box body 1 and a bottom plate 3. At the bottom of both ends of the sizing box body 1, first support plates 2 are vertically installed, and the bottom ends of the first support plates 2 are connected to the bottom plate 3. It also includes: a sizing component 4 arranged inside the sizing box body 1 that can output PE pipe fittings according to a unified specification. By setting the sizing component 4, the PE pipe fittings can be output from the inside of the sizing box body 1 according to the required specifications; a cooling component 5 is provided below the sizing box body 1 that can accelerate the forming speed of the PE pipes inside the sizing component 4. By setting the cooling component 5, the PE pipes can be formed faster, improving the extrusion efficiency; a first fixed cylinder 13 is fixedly connected to the outside of one end of the sizing box body 1, a second support plate 6 is fixedly connected to one side of the first fixed cylinder 13, and there are no less than three limiting cavities 7 on one side of the second support plate 6. A guide rod 8 is fixedly installed inside each limiting cavity 7, and a moving block 9 is slidably connected to the outside of the guide rod 8; a clamping component 10 is provided on one side of the moving block 9 that can limit the PE pipe fittings output from the inside of the sizing component 4. By setting the clamping component 10, when the cooled and formed PE pipes are output from the inside of the sizing component 4, the pipe head can be limited, thus avoiding the expansion and deformation of large-diameter PE pipes due to the loss of the limitation of the sizing component 4, improving the forming quality and forming effect of the PE pipes; a second fixed cylinder 14 is rotatably connected to the outside of the first fixed cylinder 13, and a transmission component 15 is provided on the outside of the second fixed cylinder 14 that can drive the clamping component 10 to reciprocate along the inner wall of the limiting cavity 7. By setting the transmission component 15, the clamping component 10 can be driven to approach or move away from the PE pipe fittings, so that the clamping component 10 can contact the PE pipes and limit the PE pipes; a driving component 12 is provided at the bottom of the first fixed cylinder 13 that can provide a rotational force for the second fixed cylinder 14. By setting the driving component 12, the second fixed cylinder 14 can be driven to rotate, and the second fixed cylinder 14 then drives the transmission component 15 and the clamping component 10 to limit the PE pipes.

[0024] The sizing component 4 includes a sizing outer tube 41 fixed inside the sizing box body 1. A cooling cavity 42 for the flow of coolant is provided between the sizing outer tube 41 and the sizing box body 1. A plurality of heat-conducting fins 43 are symmetrically arranged inside the cooling cavity 42. The heat-conducting fins 43 are designed in a ring shape, and a plurality of heat-conducting fins 43 are equidistantly distributed along the axis direction of the sizing box body 1. The heat-conducting fins 43 are fixedly installed on the outside of the sizing outer tube 41. By using the heat-conducting fins 43, the contact area between the sizing outer tube 41 and the coolant inside the cooling cavity 42 can be increased, improving the heat exchange rate between the PE pipe fittings and the coolant, thus accelerating the forming speed of the PE pipe fittings and ensuring that the PE pipe fittings are formed when output to the outside of the sizing box body 1; an extruder body 45 is provided on one side of the sizing box body 1. The bottom of the extruder body 45 is connected to the bottom plate 3, and the discharge port of the extruder body 45 is connected to the feed port of the sizing box body 1. A sizing inner rod 44 is coaxially arranged inside the sizing outer tube 41, and one end of the sizing inner rod 44 is connected to the extruder body 45, as Figure 2As shown, the extruder body 45 will extrude high-temperature liquid polyethylene into the sizing box body 1, and then the polyethylene will be cooled and formed through the gap between the sizing inner rod 44 and the sizing outer tube 41.

[0025] The clamping assembly 10 includes a strip plate 101 arranged on one side of the limiting cavity 7. One side of the strip plate 101 is connected to the moving block 9. The bottom end of the strip plate 101 is fixedly connected with a U-shaped seat 102. A guiding roller 103 is arranged inside the U-shaped seat 102. The guiding roller 103 is rotatably connected to both sides of the inner wall of the U-shaped seat 102 through bearings. As Figure 3 shown, by using the rotatable guiding roller 103 inside the U-shaped seat 102, while not affecting the outward output of the PE pipe, the limitation of the PE pipe can be ensured.

[0026] Side plates 11 are vertically installed on both sides of the strip plate 101. One side of the side plate 11 is fixedly connected with a limiting block 16. A limiting groove 17 corresponding to the limiting block 16 is opened outside the limiting cavity 7. The limiting block 16 is located inside the limiting groove 17. As Figure 3 shown, by setting the limiting groove 17 and the limiting block 16, the whole clamping assembly 10 can be prevented from disengaging from the inside of the limiting cavity 7, and the stability of the clamping assembly 10 is improved.

[0027] The transmission assembly 15 includes a connecting rod 153 arranged on the outside of the second fixed cylinder 14. Columns 151 are vertically installed on one side of the moving block 9 and one side of the second fixed cylinder 14. A sleeve 152 is rotatably connected to the outside of the column 151. The connecting rod 153 is respectively connected to the two ends of the sleeve 152. As Figure 4 shown, the second fixed cylinder 14 can drive the limiting block 16 to reciprocate inside the limiting groove 17 through the connecting rod 153, the column 151 and the sleeve 152, so as to drive the clamping assembly 10 to contact the PE pipe and limit it.

[0028] The driving assembly 12 includes a motor 121 fixed on the top of the first support plate 2. A gear ring 123 is fixedly connected to one side of the second fixed cylinder 14. A gear 122 is meshed with the outside of the gear ring 123. The output end of the motor 121 penetrates through the first support plate 2 and is connected to the gear 122. As Figure 5 shown, by using the motor 121, the gear 122 and the gear ring 123, the second fixed cylinder 14 can be driven to rotate, and the second fixed cylinder 14 then drives the transmission assembly 15 and the clamping assembly 10 to limit the PE pipe.

[0029] The cooling component 5 includes a liquid storage tank 52 fixed to the top of the bottom plate 3. A liquid pumping pump 53 is fixedly installed on the top of the liquid storage tank 52. The liquid inlet of the liquid pumping pump 53 is communicated with the inside of the liquid storage tank 52. The liquid outlet of the liquid pumping pump 53 is connected with a liquid outlet pipe 55. The top end of the liquid outlet pipe 55 is connected to the sizing box body 1. A chiller 51 is provided on one side of the liquid storage tank 52. The chiller 51 is fixedly installed on the chiller 51. The liquid inlet of the chiller 51 is connected with a liquid inlet pipe 56. The top end of the liquid inlet pipe 56 is connected to the sizing box body 1. The liquid outlet of the chiller 51 is communicated with the inside of the liquid storage tank 52 through a pipeline. A liquid injection port 54 is provided at the top of one side of the liquid storage tank 52. An electromagnetic valve is installed inside the liquid injection port 54, as Figure 1 、 Figure 2 shown. By setting the chiller 51, the temperature of the coolant entering the inside of the liquid storage tank 52 can be reduced. Then, by using the liquid pumping pump 53, the liquid outlet pipe 55, and the liquid inlet pipe 56, the circulating cooling of the coolant can be realized, and the forming speed of the PE pipe can be accelerated.

[0030] Working principle: First, the high-temperature liquid polyethylene is extruded into the sizing component 4 inside the sizing box body 1 according to the actually required specifications. Then, the speed of the PE pipe fitting is accelerated through the cooling component 5. When the pipe head of the cooled and formed PE pipe is output from the discharge port of the sizing box body 1, the driving component 12 and the transmission component 15 are used to drive a plurality of clamping components 10 to approach and contact the PE pipe, and the pipe head of the PE pipe is limited. In this way, the situation that the large-diameter PE pipe expands and deforms due to the loss of the restriction of the sizing component 4 is avoided, and the forming quality and forming effect of the PE pipe are improved.

[0031] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A large-diameter PE pipe extrusion sizing box, comprising a sizing box body (1) and a bottom plate (3), characterized in that, At both bottom ends of the sizing box body (1), first support plates (2) are vertically installed, and the bottom ends of the first support plates (2) are connected to the bottom plate (3). Further included are: A sizing assembly (4) disposed inside the sizing box body (1) for outputting PE pipe fittings in a unified specification. Below the sizing box body (1), there is a cooling assembly (5) for accelerating the forming speed of the PE pipe inside the sizing assembly (4). On the outer side of one end of the sizing box body (1), a first fixed cylinder (13) is fixedly connected. On one side of the first fixed cylinder (13), a second support plate (6) is fixedly connected. On one side of the second support plate (6), there are no less than three limiting cavities (7). Inside each limiting cavity (7), a guide rod (8) is fixedly installed. A moving block (9) is slidably connected to the outer side of the guide rod (8); A clamping assembly (10) disposed on one side of the moving block (9) for limiting the PE pipe fittings output from inside the sizing assembly (4). The outer side of the first fixed cylinder (13) is rotatably connected to a second fixed cylinder (14). On the outer side of the second fixed cylinder (14), there is a transmission assembly (15) for driving the clamping assembly (10) to reciprocally slide along the inner wall of the limiting cavity (7). At the bottom of the first fixed cylinder (13), there is a driving assembly (12) for providing a rotational force to the second fixed cylinder (14).

2. The sizing box for extruding large-diameter PE pipes according to claim 1, wherein: The sizing assembly (4) includes a sizing outer tube (41) fixed inside the sizing box body (1). Between the sizing outer tube (41) and the sizing box body (1), there is a cooling cavity (42) for the flow of coolant. Inside the cooling cavity (42), a plurality of heat conducting fin plates (43) are symmetrically arranged. The heat conducting fin plates (43) are of an annular design, and a plurality of heat conducting fin plates (43) are equidistantly distributed along the axial direction of the sizing box body (1). The heat conducting fin plates (43) are fixedly installed on the outer side of the sizing outer tube (41). On one side of the sizing box body (1), there is an extruder body (45). The bottom of the extruder body (45) is connected to the bottom plate (3). The discharge port of the extruder body (45) is connected to the feed port of the sizing box body (1). Inside the sizing outer tube (41), a sizing inner rod (44) is coaxially arranged. One end of the sizing inner rod (44) is connected to the extruder body (45).

3. A large-diameter PE pipe extrusion sizing box according to claim 1, characterized in that: The clamping assembly (10) includes a strip-shaped plate (101) disposed on one side of the limiting cavity (7). One side of the strip-shaped plate (101) is connected to the moving block (9). The bottom end of the strip-shaped plate (101) is fixedly connected to a U-shaped seat (102). Inside the U-shaped seat (102), there is a guiding roller (103). The guiding roller (103) is rotatably connected to both sides of the inner wall of the U-shaped seat (102) through bearings respectively.

4. A large-diameter PE pipe extrusion sizing box according to claim 3, characterized in that: On both sides of the strip-shaped plate (101), side plates (11) are vertically installed. On one side of the side plates (11), a limiting block (16) is fixedly connected. On the outer side of the limiting cavity (7), a limiting groove (17) corresponding to the limiting block (16) is opened. The limiting block (16) is located inside the limiting groove (17).

5. A large-diameter PE pipe extrusion sizing box according to claim 1, characterized in that: The transmission assembly (15) includes a connecting rod (153) arranged outside the second fixed cylinder (14). Columns (151) are vertically installed on one side of the moving block (9) and one side of the second fixed cylinder (14). A sleeve (152) is rotatably connected to the outside of the column (151). The connecting rod (153) is respectively connected to the sleeves (152) at both ends.

6. A large-diameter PE pipe extrusion sizing box according to claim 1, characterized in that: The drive assembly (12) includes a motor (121) fixed to the top of the first support plate (2). A gear ring (123) is fixedly connected to one side of the second fixed cylinder (14). A gear (122) is meshed and connected to the outside of the gear ring (123). The output end of the motor (121) passes through the first support plate (2) and is connected to the gear (122).

7. A large-diameter PE pipe extrusion sizing box according to claim 1, characterized in that: The cooling component (5) includes a liquid storage tank (52) fixed to the top of the bottom plate (3). A liquid pumping pump (53) is fixedly installed on the top of the liquid storage tank (52). The liquid inlet of the liquid pumping pump (53) is communicated with the inside of the liquid storage tank (52). The liquid outlet of the liquid pumping pump (53) is connected to a liquid outlet pipe (55). The top end of the liquid outlet pipe (55) is connected to the sizing box body (1). A chiller (51) is arranged on one side of the liquid storage tank (52). The chiller (51) is fixedly installed on the chiller (51). The liquid inlet of the chiller (51) is connected to a liquid inlet pipe (56). The top end of the liquid inlet pipe (56) is connected to the sizing box body (1). The liquid outlet of the chiller (51) is communicated with the inside of the liquid storage tank (52) through a pipeline. A liquid injection port (54) is arranged at the top of one side of the liquid storage tank (52). An electromagnetic valve is installed inside the liquid injection port (54).

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