Cooling type elbow mold for processing PE (polyethylene) elbow pipe

Abstract

The utility model provides a cooling type elbow mold for PE elbow pipe machining. The cooling type elbow mold comprises a mounting plate, an inner sleeve, an outer sleeve and a recycling part. The mounting plate is used for being coaxially connected to the output end face of the extruder. The inner sleeve and the outer sleeve are both fixedly connected to the mounting plate, and the outer sleeve is arranged on the periphery of the inner sleeve in a sleeving mode. A water inlet hole with an upward opening and a water outlet hole with a downward opening are formed in the outer sleeve; the water inlet hole is connected with a water inlet pipe, and the water inlet pipe is used for being communicated with a water source so as to inject liquid into a cavity between the inner sleeve and the outer sleeve, so that the temperature of the inner sleeve is reduced; the recycling part is used for being fixed to the lower side of the outer sleeve and is of a hollow structure with an upward opening; and after the liquid is discharged through the water outlet hole, the liquid can fall into the recycling part, so that the liquid can be recycled and reused. According to the cooling type elbow mold for machining the PE bent pipe, the cooling efficiency in the forming process of the PE bent pipe is improved by increasing the cooling range, and the forming effect of the PE bent pipe is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of PE pipe bending processing, and specifically relates to a cooling elbow mold for PE pipe bending processing. Background Art

[0002] PE elbow is a pipe made of polyethylene (PE) material, and its main characteristics are large bending angle and large radius. Specifically, PE elbow usually refers to a pipe with an angle greater than or equal to 90 degrees and a radius greater than or equal to twice the diameter of the bend.

[0003] In the existing PE pipe bending process, after the pipe is discharged from the rubber extruder, it needs to be shaped under the action of a traction device; in order to avoid the adverse effects of excessively high surface temperature of the pipe bending on the forming process, the existing technology usually uses a suspended pipe to spray water on the surface of the pipe bending to achieve timely cooling of the pipe bending.

[0004] The inventors found that the water spraying area of ​​the elbow is limited and cannot effectively cover the entire surface of the elbow, which in turn causes technical defects such as low cooling efficiency and poor molding effect of the PE elbow. Utility Model Content

[0005] The embodiment of the present application provides a cooling elbow mold for PE elbow processing, which aims to improve the cooling efficiency during the PE elbow forming process and ensure the forming effect of the PE elbow.

[0006] To achieve the above objectives, the technical solution adopted in this application is:

[0007] Provided is a cooling elbow die for PE pipe bending processing, comprising:

[0008] The mounting plate adopts an annular structure and is used for coaxial connection to the output end face of the extruder;

[0009] An inner sleeve, fixedly connected to the side of the mounting plate facing away from the extruder, and having an inner portion thereof having a curved structure adapted to the PE elbow, so as to be suitable for forming the PE elbow discharged from the extruder;

[0010] An outer sleeve is fixedly connected to a side of the mounting plate facing away from the extruder and is sleeved on the outer circumference of the inner sleeve to form a cavity structure between the outer sleeve and the inner sleeve; the outer sleeve has an upward-opening water inlet hole and a downward-opening water outlet hole; wherein the water inlet hole is connected to a water inlet pipe, and the water inlet pipe is used to communicate with a water source to inject water into the cavity structure and reduce the temperature of the inner sleeve; and

[0011] The recovery component is used to be fixed on the horizontal plane on the lower side of the outer sleeve, and adopts a structure with a hollow interior and an upward opening to recover the liquid discharged through the water outlet.

[0012] In a possible implementation, the water inlet pipe further includes:

[0013] a watering pipe, arranged horizontally in parallel with the water inlet pipe and located on the side of the outer sleeve facing away from the extruder; and a first valve body is connected to the watering pipe; and

[0014] The water storage member is used to communicate with the water source and contain liquid. The water storage member is fixed to the outside of the extruder through a bracket and is located on the upper side of the watering pipe and the water inlet pipe and is communicated with the watering pipe and the water inlet pipe.

[0015] In a possible implementation, the recovery component is connected to a circulating water pipe communicating with the interior thereof, and the circulating water pipe is communicated with the water storage component via a water pump.

[0016] In one possible implementation, a plurality of legs are provided at the bottom of the recovery member, and the recovery member is used to be supported on a horizontal plane by the legs; and the circulating water pipe is connected to the lower side of the recovery member and communicated with the inner bottom surface of the recovery member.

[0017] In a possible implementation, the water storage member is adapted to swing relative to the bracket with the central axis of the water inlet pipe as the axis, and the water inlet pipe is also adapted to swing relative to the water storage member with its own central axis as the axis.

[0018] In a possible implementation, the water outlet is connected to a water outlet pipe, and the water outlet pipe is connected to a second valve body.

[0019] In a possible implementation, a filter is provided at the top of the recovery member, and the filter is detachably connected to the recovery member.

[0020] In one possible implementation, there are multiple groups of connection structures between the mounting plate and the extruder; the multiple groups of connection structures are arranged at intervals along the circumference of the mounting plate, and each group of the connection structures includes:

[0021] A positioning hole is provided on the output end face of the extruder;

[0022] An alignment hole is provided on the mounting plate and is adapted to communicate with the positioning hole; and

[0023] The locking member is adapted to be inserted into the positioning hole and the alignment hole that are communicated with each other, so as to connect the mounting plate and the extruder.

[0024] In a possible implementation, the locking member includes:

[0025] A connecting bolt adapted to be inserted into the positioning hole and the alignment hole that are interconnected; and

[0026] a connecting nut, threadedly connected to the connecting bolt;

[0027] Wherein, when the connecting nut is inserted into the interconnected positioning hole and the alignment hole and the connecting bolt is connected to the connecting nut, the head of the connecting bolt and the connecting nut are suitable for respectively abutting the output end face of the extruder and the mounting plate.

[0028] In a possible implementation, the elbow mold further includes:

[0029] An annular blocking cover is arranged on a side of the outer sleeve facing away from the mounting plate, and is connected to the outer sleeve and the inner sleeve to close the cavity structure.

[0030] In the embodiment of the present application, the positioning of the inner sleeve is achieved by coaxially connecting the mounting plate and the output end face of the extruder, so that the forming of the PE elbow discharged from the extruder is completed with the help of the inner cavity with a curved structure in the inner sleeve; on this basis, by supplying water, the liquid passes through the cavity between the inner sleeve and the outer sleeve, so as to achieve cooling of the inner sleeve and then complete cooling of the PE elbow; after the liquid is discharged from the water outlet, it will fall into the recovery part below to achieve liquid recovery and reuse.

[0031] Since the cooling area is surrounded by the PE elbow, it has better cooling efficiency compared to the traditional local watering method.

[0032] The cooling elbow mold for PE elbow processing provided in this embodiment can improve the cooling efficiency during the PE elbow forming process and ensure the forming effect of the PE elbow compared with the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A schematic diagram of the three-dimensional structure of a cooling elbow die for PE pipe bending processing provided in an embodiment of the present application;

[0035] Figure 2A schematic diagram of the three-dimensional structure of the recovery element and filter screen used in the embodiment of the present application from an explosion perspective;

[0036] Figure 3 A schematic diagram of the three-dimensional structure of the connection structure used in the embodiment of the present application under an exploded perspective;

[0037] Figure 4 This is a schematic diagram of the three-dimensional structure of the mounting plate, inner sleeve, outer sleeve and annular cover in an assembled state used in an embodiment of the present application;

[0038] Figure 5 This is a schematic cross-sectional view of the mounting plate, inner sleeve, outer sleeve, and annular cover in an assembled state used in an embodiment of the present application;

[0039] Explanation of the accompanying drawings: 1. Mounting plate; 2. Inner sleeve; 3. Outer sleeve; 31. Water inlet hole; 32. Water outlet hole; 4. Recovery part; 41. Support leg; 5. Water storage part; 6. Bracket; 7. Filter; 8. Connection structure; 81. Positioning hole; 82. Alignment hole; 83. Locking part; 831. Connecting bolt; 832. Connecting nut; 9. Annular cover; 10. Water inlet pipe; 20. Sprinkler pipe; 201. First valve body; 30. Circulating water pipe; 301. Water pump; 40. Water outlet pipe; 401. Second valve body. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0041] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0044] Please also refer to Figures 1 to 5 The cooling elbow mold for PE pipe bending provided in this application is now described. The cooling elbow mold for PE pipe bending provided in this application includes a mounting plate 1, an inner sleeve 2, an outer sleeve 3 and a recovery part 4.

[0045] The mounting plate 1 adopts an annular plate structure; during actual installation, the mounting plate 1 is used to be coaxially connected to the output end face of the extruder, and the annular inner cavity of the mounting plate 1 avoids the output port of the extruder.

[0046] The inner sleeve 2 is fixedly connected to the side of the mounting plate 1 facing away from the extruder, and its interior adopts a curved structure that is compatible with the PE elbow, so as to be suitable for forming the PE elbow discharged from the extruder; during the forming process, the PE elbow continuously exchanges heat with the inner sleeve 2 to increase the surface temperature of the inner sleeve 2.

[0047] The outer sleeve 3 is also fixedly connected to the side of the mounting plate 1 facing away from the extruder, and is sleeved on the outer periphery of the inner sleeve 2 to form a cavity structure between the outer sleeve 3 and the inner sleeve 2; in this embodiment, the outer sleeve 3 has a water inlet hole 31 opening upward and a water outlet hole 32 opening downward; wherein, the water inlet hole 31 is connected to a water inlet pipe 10, and this water inlet pipe 10 is used to communicate with a water source to inject water into the cavity structure and reduce the temperature of the inner sleeve 2.

[0048] The recovery member 4 is used to be fixed on the horizontal plane on the lower side of the outer sleeve 3 , and has a structure with a hollow interior and an upward opening to recover the liquid discharged through the water outlet 32 ​​.

[0049] It should be noted that when there is no liquid in the recovery component 4, the water source connected to the water inlet pipe 10 can be other water sources outside; and when there is liquid in the recovery component 4, the water source connected to the water inlet pipe 10 can be the liquid recovered in the recovery component 4.

[0050] In the embodiment of the present application, the inner sleeve 2 is positioned by coaxially connecting the mounting plate 1 and the output end face of the extruder, so that the forming of the PE elbow discharged from the extruder is completed with the help of the inner cavity with a curved structure in the inner sleeve 2; on this basis, by supplying water, the liquid passes through the cavity between the inner sleeve 2 and the outer sleeve 3, so as to achieve cooling of the inner sleeve 2 and then complete cooling of the PE elbow; after the liquid is discharged from the water outlet 32, it will fall into the recovery part 4 below to achieve recovery and reuse of the liquid.

[0051] Since the cooling area is surrounded by the PE elbow, it has better cooling efficiency compared to the traditional local watering method.

[0052] The cooling elbow mold for PE elbow processing provided in this embodiment can improve the cooling efficiency during the PE elbow forming process and ensure the forming effect of the PE elbow compared with the existing technology.

[0053] In some embodiments, as Figure 1 As shown, the water inlet pipe 10 further includes a water sprinkling pipe 20 and a water storage member 5 .

[0054] The sprinkler pipe 20 is arranged horizontally in parallel with the water inlet pipe 10 and is located on the side of the outer sleeve 3 facing away from the extruder. In addition, a first valve body 201 for controlling (closing or avoiding) the internal tube cavity of the sprinkler pipe 20 is connected to the sprinkler pipe 20.

[0055] As (one of) the water sources connected to the water inlet pipe 10, this water storage member 5 is used to communicate with the external water source and contain liquid. It is fixed to the outside of the extruder through a bracket 6, and is located on the upper side of the sprinkler pipe 20 and the water inlet pipe 10, and is connected to the sprinkler pipe 20 and the water inlet pipe 10.

[0056] When there is liquid in the water storage member 5 , the liquid can flow into the watering pipe 20 and the water inlet pipe 10 under the action of its own gravity.

[0057] In some embodiments, as Figure 1 As shown, the recovery component 4 is connected to a circulating water pipe 30 communicating with the interior thereof, and the circulating water pipe 30 is communicated with the water storage component 5 through a water pump 301 .

[0058] In actual use, by turning on the water pump 301, the liquid in the recovery part 4 can be gathered into the water storage part 5, so that the water storage part 5 can be filled with water in time when the amount of liquid in the water storage part 5 is insufficient.

[0059] In some embodiments, as Figure 1 and Figure 2As shown, a plurality of supporting legs 41 are provided at the bottom of the recovery part 4, and the recovery part 4 is used to be supported on a horizontal plane by the supporting legs 41 so that a gap is formed between the lower side of the recovery part 4 and the horizontal plane; based on this, the aforementioned circulating water pipe 30 is connected to the lower side of the recovery part 4 and is connected to the inner bottom surface of the recovery part 4, thereby ensuring that the liquid at the bottom of the recovery part 4 can be fully recovered to avoid the formation of sediment.

[0060] In some embodiments, as Figure 1 As shown, the water storage member 5 is suitable for swinging relative to the bracket 6 with the central axis of the water inlet pipe 10 as the axis, and the water inlet pipe 10 is also suitable for swinging relative to the water storage member 5 with its own central axis as the axis, so as to change the horizontal position of the lower end of the sprinkler pipe 20 without affecting the normal use of the water inlet pipe 10, increase the cooling area of ​​the sprinkler pipe 20 on the surface of the PE elbow, and ensure the cooling effect on the surface of the PE elbow.

[0061] In some embodiments, as Figure 1 and Figure 4 As shown, the water outlet 32 ​​is connected to a water outlet pipe 40 , and the water outlet pipe 40 is connected to a second valve body 401 for controlling (closing or avoiding) the inner tube cavity of the water outlet pipe 40 .

[0062] In some embodiments, as Figure 2 As shown, a filter screen 7 is provided on the top of the recovery component 4, and the filter screen 7 is detachably connected to the recovery component 4.

[0063] In this embodiment, a frame made of hard material is provided on the periphery of the filter 7 , and the frame can be supported on the top surface of the recycling component 4 and partially embedded in the interior of the recycling component 4 .

[0064] By adopting the above technical solution, the filter 7 can prevent external impurities from entering the recovery component 4, ensuring that the liquid recycled after passing through the recovery component 4 does not contain impurities, thereby avoiding the occurrence of channel blockage.

[0065] In some embodiments, as Figure 3 As shown, there are multiple groups of connection structures 8 between the mounting plate 1 and the output end face of the extruder, that is, the mounting plate 1 and the extruder are detachably connected via the multiple groups of connection structures 8 .

[0066] In this embodiment, a plurality of groups of connection structures 8 are arranged at intervals along the circumference of the mounting plate 1 , and each group of connection structures 8 includes a positioning hole 81 , an alignment hole 82 and a locking member 83 .

[0067] The positioning hole 81 is provided on the output end face of the extruder, is located outside the output port of the extruder, and its axial direction is parallel to the material discharge direction of the extruder.

[0068] The alignment hole 82 is opened on the mounting plate 1 ; when the mounting plate 1 is coaxially arranged on the output end face of the extruder, the corresponding alignment hole 82 is adapted to be coaxially connected to the positioning hole 81 .

[0069] The locking member 83 is adapted to be inserted into the positioning hole 81 and the alignment hole 82 that are interconnected, so as to connect the output end face of the extruder and the mounting plate 1 , thereby realizing a combined installation of the two.

[0070] In some embodiments, as Figure 3 As shown, the locking member 83 includes a connecting bolt 831 and a connecting nut 832 .

[0071] The connecting bolt 831 is adapted to be inserted into the positioning hole 81 and the alignment hole 82 that are connected to each other.

[0072] The connecting nut 832 is threadedly connected to the connecting bolt 831 .

[0073] Specifically, when the connecting nut 832 is inserted into the interconnected positioning hole 81 and the alignment hole 82 and the connecting bolt 831 is connected to the connecting nut 832, the head of the connecting bolt 831 and the connecting nut 832 are suitable for abutting the output end face of the extruder and the mounting plate 1 respectively to avoid back movement between the two.

[0074] In some embodiments, as Figure 1 and Figure 5 As shown, the elbow mold also includes an annular baffle 9, which is arranged on the side of the outer sleeve 3 facing away from the mounting plate 1, and is connected to the outer sleeve 3 and the inner sleeve 2 to close the cavity structure and prevent the liquid between the outer sleeve 3 and the inner sleeve 2 from being discharged from the side of the outer sleeve 3 and the inner sleeve 2 facing away from the mounting plate 1, causing the cooling efficiency of the inner sleeve 2 to be affected.

[0075] In other embodiments, the outer sleeve 3 and the inner sleeve 2 have an open structure on the side facing away from the mounting plate 1, and the interior of the outer sleeve 3 has an upwardly inclined structure in the direction facing away from the mounting plate 1 to prevent the liquid entering the cavity structure between the outer sleeve 3 and the inner sleeve 2 from being directly discharged.

[0076] It should be noted that when an open structure is adopted on the side of the outer sleeve 3 and the inner sleeve 2 facing away from the mounting plate 1, if the water injection efficiency into the water inlet 31 is to be increased, since the water outlet efficiency of the water outlet 32 ​​is constant, the liquid will still be discharged from the side of the outer sleeve 3 and the inner sleeve 2 facing away from the mounting plate 1 after filling the cavity structure between the outer sleeve 3 and the inner sleeve 2, and fall on the surface of the PE elbow, and surround the PE elbow, so as to assist in cooling the PE elbow.

[0077] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. Cooling elbow die for PE pipe bending, characterized by: include: The mounting plate adopts an annular structure and is used for coaxial connection to the output end face of the extruder; An inner sleeve, fixedly connected to the side of the mounting plate facing away from the extruder, and having an inner portion thereof having a curved structure adapted to the PE elbow, so as to be suitable for forming the PE elbow discharged from the extruder; An outer sleeve is fixedly connected to a side of the mounting plate facing away from the extruder and is sleeved on the outer circumference of the inner sleeve to form a cavity structure between the outer sleeve and the inner sleeve; the outer sleeve has an upward-opening water inlet hole and a downward-opening water outlet hole; wherein the water inlet hole is connected to a water inlet pipe, and the water inlet pipe is used to communicate with a water source to inject water into the cavity structure and reduce the temperature of the inner sleeve; as well as The recovery component is used to be fixed on the horizontal plane on the lower side of the outer sleeve, and adopts a structure with a hollow interior and an upward opening to recover the liquid discharged through the water outlet.

2. The cooling elbow mold for PE pipe bending according to claim 1, characterized in that: The water inlet pipe also includes: a watering pipe, arranged horizontally in parallel with the water inlet pipe and located on the side of the outer sleeve facing away from the extruder; and a first valve body is connected to the watering pipe; and The water storage member is used to communicate with the water source and contain liquid. The water storage member is fixed to the outside of the extruder through a bracket and is located on the upper side of the watering pipe and the water inlet pipe and is communicated with the watering pipe and the water inlet pipe.

3. The cooling elbow mold for PE pipe bending processing according to claim 2, characterized in that: The recovery component is connected with a circulating water pipe communicating with the interior thereof, and the circulating water pipe is communicated with the water storage component through a water pump.

4. The cooling elbow die for PE pipe bending processing according to claim 3, characterized in that: The bottom of the recovery member is provided with a plurality of supporting legs, and the recovery member is used to be supported on a horizontal plane by the supporting legs; and the circulating water pipe is connected to the lower side of the recovery member and communicated with the inner bottom surface of the recovery member.

5. The cooling elbow mold for PE pipe bending processing according to claim 2, characterized in that: The water storage member is suitable for swinging relative to the bracket with the central axis of the water inlet pipe as the axis, and the water inlet pipe is also suitable for swinging relative to the water storage member with its own central axis as the axis.

6. The cooling elbow mold for PE pipe bending processing according to claim 1, characterized in that: The water outlet is connected to a water outlet pipe, and the water outlet pipe is connected to a second valve body.

7. The cooling elbow mold for PE pipe bending according to claim 1, characterized in that: A filter is provided on the top of the recycling component, and the filter is detachably connected to the recycling component.

8. The cooling elbow die for PE pipe bending according to claim 1, characterized in that: There are multiple groups of connection structures between the mounting plate and the extruder; the multiple groups of connection structures are arranged at intervals along the circumference of the mounting plate, and each group of the connection structures includes: A positioning hole is provided on the output end face of the extruder; An alignment hole is provided on the mounting plate and is adapted to communicate with the positioning hole; and The locking member is adapted to be inserted into the positioning hole and the alignment hole that are communicated with each other, so as to connect the mounting plate and the extruder.

9. The cooling elbow die for PE pipe bending according to claim 8, characterized in that: The locking member comprises: A connecting bolt adapted to be inserted into the positioning hole and the alignment hole that are interconnected; and a connecting nut, threadedly connected to the connecting bolt; Wherein, when the connecting nut is inserted into the interconnected positioning hole and the alignment hole and the connecting bolt is connected to the connecting nut, the head of the connecting bolt and the connecting nut are suitable for respectively abutting the output end face of the extruder and the mounting plate.

10. The cooling elbow die for PE pipe bending according to any one of claims 1 to 9, characterized in that: The elbow mold also includes: An annular blocking cover is arranged on a side of the outer sleeve facing away from the mounting plate, and is connected to the outer sleeve and the inner sleeve to close the cavity structure.

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