PE pipe bending die

Abstract

This utility model discloses a PE pipe bending die, including a support and a bending device. The support is placed on a flat surface; the bending device is mounted on the support and used to bend the PE pipe body. The bending device includes a conveying roller and a pressing roller. The conveying roller is rotatably mounted on the support and is driven to rotate by a drive assembly. The pressing roller is mounted on the support via a moving assembly, which drives the pressing roller to reciprocate vertically along the support. Both the conveying roller and the pressing roller have placement grooves, in which the PE pipe body is placed. The purpose of this utility model is to solve the problem that existing PE pipe bending molds use rigid impact, which leads to easy breakage of the bent PE pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, specifically to a PE pipe bending die. Background Technology

[0002] In the field of plastic pipe processing, PE (polyethylene) pipes are widely used in municipal, construction, and industrial applications due to their corrosion resistance and flexibility. Traditional PE pipe bending processes rely heavily on manual operation or simple mechanical molds, involving heating and softening the pipe before shaping it using a fixed-radius template. However, these molds generally suffer from low temperature control precision, limited bending radius adjustment, and insufficient pipe springback compensation, easily leading to defects such as uneven pipe wall thickness, inner arc wrinkles, or outer arc tensile cracking. With increasing demands for high-precision engineering, existing molds face technical bottlenecks in adaptive diameter adjustment, intelligent temperature control, and multi-dimensional digital control of bending parameters. There is an urgent need to develop new bending molds with dynamic compensation algorithms, modular quick-change structures, and closed-loop feedback systems to meet the efficient and precise processing requirements of PE pipes with different diameters and wall thicknesses.

[0003] The utility model patent with application number CN202321570011.4 and publication number CN220163216U (hereinafter referred to as "Prior Art 1") discloses a pipe bending machine for PE pipes, including a first conveyor frame, a bending frame fixedly connected to one end of the first conveyor frame, a second conveyor frame fixedly connected to the end of the bending frame away from the first conveyor frame, and fixing blocks fixedly connected to the inner walls of both the first and second conveyor frames, with an elastic band provided between the two sets of fixing blocks.

[0004] The specification of prior art 1 discloses a pipe bending machine for PE pipes. In use, the machine can achieve efficient and rapid pipe bending of PE pipes by means of a first conveyor frame, a bending frame, a second conveyor frame, a back frame, a hydraulic push rod, and a bending arc seat. However, in actual applications, the force used to bend the PE pipe with the hydraulic push rod is too large, and the PE pipe is subjected to rigid impact bending, which makes the PE pipe easy to break after bending. Summary of the Invention

[0005] This invention provides a PE pipe bending die, which aims to solve the problem that the existing PE pipe bending molds use a rigid impact method, which can cause the bent PE pipe to break easily.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A PE pipe bending die includes a support and a bending device. The support is used to be placed on a plane. The bending device is used to be mounted on the support and to bend the PE pipe body.

[0008] The pipe bending device includes a conveying roller and a pressing roller. The conveying roller is rotatably mounted on a support. The conveying roller is used to rotate via a drive component. The pressing roller is mounted on the support via a moving component. The moving component is used to drive the pressing roller to reciprocate in the vertical direction of the support. Both the conveying roller and the pressing roller are provided with a placement groove, and the PE pipe body is used to be placed in the placement groove.

[0009] Furthermore, the conveyor rollers are mounted on the bracket via a rotating shaft.

[0010] Furthermore, the drive assembly includes a motor and a transmission mechanism. The motor is connected to the rotating shaft through the transmission mechanism, and the motor is used to drive the rotating shaft to rotate through the transmission mechanism.

[0011] Furthermore, the transmission mechanism is either a belt drive mechanism or a sprocket drive mechanism.

[0012] Furthermore, the movable component includes a mounting strip, guide rods, a screw drive structure, and a movable block. Two guide rods are provided below the mounting strip, with one end of the guide rod connected to the mounting strip and the other end set on the bracket. The screw drive structure is set on the mounting strip, and the movable block is slidably mounted on the two guide rods through the screw drive structure. The clamping roller is rotatably mounted on the movable block.

[0013] Furthermore, the screw drive structure includes a motor, a ball screw, and a screw nut. The screw nut is fixedly mounted on the moving block, the fixed end of the motor is set on the mounting strip, and the output shaft of the motor passes through the mounting strip and is connected to the ball screw. One end of the ball screw is used to cooperate with the screw nut, and the other end is rotatably connected to the bracket.

[0014] Furthermore, the mounting strip is provided with a U-shaped support, the fixed end of the motor is mounted on the U-shaped support, and the output shaft of the motor passes through the U-shaped support and the mounting strip in sequence before being connected to the ball screw.

[0015] Furthermore, a screw is rotatably mounted on the pressing roller, and the screw is threadedly connected to the moving block.

[0016] Furthermore, the motor is provided with a mounting base.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model mainly includes a bracket and a pipe bending device. In actual use, when the operator needs to bend the PE pipe, the clamping roller is first moved to a position near the upper part of the conveying roller via the moving component. At this time, the gap between the placement groove on the clamping roller and the placement groove on the conveying roller allows the PE pipe body to pass through completely. Then, the drive component is activated, and after the drive component rotates, it drives the conveying roller to rotate slowly. Then, the operator places the heated PE pipe body into the placement groove on the two conveying rollers. At this time, the PE pipe body is slowly conveyed by the conveying roller. At the same time, the operator uses the moving component to adjust the height of the clamping roller, so that the clamping roller slowly moves towards the PE pipe body. The PE pipe body is slowly squeezed, causing the PE pipe body to bend. After bending, the PE pipe body is removed, and the drive component is turned off. The advantage of this design is that the PE pipe body can be bent flexibly, and the PE pipe body will not be subjected to strong impact, resulting in better physical properties of the PE pipe body after bending and making it less prone to breakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of this utility model.

[0021] Figure 2 This is the second structural schematic diagram of the present invention.

[0022] Figure 3 This utility model Figure 1 A magnified view of a portion of point A in the middle.

[0023] In the diagram, 101-bracket, 102-conveying roller, 103-pressing roller, 104-slot, 105-rotating shaft, 106-motor, 107-mounting strip, 108-guide rod, 109-moving block, 110-motor, 111-ball screw, 112-screw nut, 113-U-shaped support, 114-screw, 115-mounting seat, 116-drive sprocket, 117-first driven sprocket, 118-third driven sprocket, 119-first chain, 120-second chain, 121-second driven sprocket. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of the present invention.

[0025] Please see Figure 1-3 As shown, this embodiment discloses a PE pipe bending mold, including a support 101 and a bending device. The support 101 is used to place on a plane; the bending device is used to be installed on the support 101 and to bend the PE pipe body.

[0026] The pipe bending device includes a conveying roller 102 and a pressing roller 103. The conveying roller 102 is rotatably mounted on the support 101. The conveying roller is used to rotate via a drive assembly. The pressing roller 103 is mounted on the support 101 via a moving assembly. The moving assembly is used to drive the pressing roller 103 to reciprocate in the vertical direction of the support 101. Both the conveying roller 102 and the pressing roller 103 are provided with a placement groove 104. The PE pipe body is used to be placed in the placement groove 104.

[0027] This utility model mainly includes a bracket 101 and a pipe bending device. In actual use, when the operator needs to bend the PE pipe, the clamping roller is first moved to a position near the conveying roller 102 via the moving component. At this time, the gap between the placement groove 104 on the clamping roller 103 and the placement groove 104 on the conveying roller 102 allows the PE pipe body to pass through completely. Then, the drive component is activated, and after the drive component rotates, it drives the conveying roller 102 to rotate slowly. Then, the operator places the heated PE pipe body in the placement groove 104 on the two conveying rollers 102. At this time, the PE pipe body is slowly conveyed by the conveying roller 102. At the same time, the operator uses the moving component to adjust the height of the clamping roller 103, so that the clamping roller 103 moves slowly towards the PE pipe body. The PE pipe body is slowly squeezed, causing the PE pipe body to bend. After bending, the PE pipe body is removed, and the drive component is turned off. The advantage of this setting is that the PE pipe body can be flexibly bent, and the PE pipe body will not be subjected to strong impact, resulting in better physical properties of the PE pipe body after bending and making it less prone to breakage.

[0028] In some embodiments, the conveying roller 102 is rotatably mounted on the bracket 101 via a rotating shaft 105.

[0029] In actual use, both ends of the conveyor roller 102 are provided with a rotating shaft 105. The purpose of providing the rotating shaft 105 is to facilitate the installation of the conveyor roller 102 and the bracket 101. The conveyor roller 102 is rotatably connected to the bracket 101 through the rotating shafts 105 at both ends. The advantage of this arrangement is that it facilitates the installation of the conveyor roller 102 and allows the conveyor roller 102 to rotate on the bracket 101.

[0030] In some embodiments, the drive assembly includes a motor 106 and a transmission mechanism. The motor 106 is connected to the rotating shaft 105 through the transmission mechanism, and the motor 106 is used to drive the rotating shaft 105 to rotate through the transmission mechanism.

[0031] In actual use, the operator controls the motor 106 to rotate. After the motor 106 rotates, it drives the transmission mechanism to rotate the shaft 105. After the shaft 105 rotates, it drives the conveying roller 102 to rotate. When the PE pipe body is placed inside the placement groove 104 on the conveying roller 102, the conveying of the PE pipe body can be completed.

[0032] In some embodiments, the transmission mechanism is a pulley transmission mechanism or a sprocket transmission mechanism.

[0033] As an optional implementation, in this embodiment, the transmission mechanism is a sprocket drive mechanism, wherein the sprocket drive mechanism includes a driving sprocket 116, a first driven sprocket 117, a second driven sprocket 121, a third driven sprocket 118, a first chain 119, and a second chain 120. The driving pulley is fixedly mounted on the output shaft of the motor 106, the first driven sprocket 117 and the second driven sprocket 121 are fixedly mounted on one of the rotating shafts 105, and the third driven sprocket 118 is fixedly mounted on the other rotating shaft. On 105, the first chain 119 is mounted on the driving pulley and the first driven sprocket 117, and the second chain 120 is mounted on the second driven sprocket 121 and the third driven sprocket 118. In use, the operator controls the motor 106 to rotate. After the motor 106 rotates, it drives the driving sprocket 116, the first driven sprocket 117, the second driven sprocket 121 and the third driven sprocket 118 to rotate together, which in turn causes the two rotating shafts 105 to drive the conveying rollers 102 to rotate, thereby realizing the conveying of the PE pipe body.

[0034] In some embodiments, the movable component includes a mounting strip 107, guide rods 108, a lead screw drive structure, and a movable block 109. Two guide rods 108 are disposed below the mounting strip 107. One end of the guide rod 108 is connected to the mounting strip 107, and the other end is disposed on the bracket 101. The lead screw drive structure is disposed on the mounting strip 107. The movable block 109 is slidably mounted on the two guide rods 108 through the lead screw drive structure. The pressure roller 103 is rotatably mounted on the movable block 109.

[0035] In actual use, when it is necessary to adjust the position of the pressing roller 103, the operator controls the screw transmission mechanism to make the moving block 109 move on the guide rod 108. After the moving block 109 moves, it drives the pressing roller 103 to move up and down.

[0036] In some embodiments, the lead screw drive structure includes a motor 110, a ball screw 111, and a lead screw nut 112. The lead screw nut 112 is fixedly mounted on the moving block 109. The fixed end of the motor 110 is disposed on the mounting strip 107. The output shaft of the motor 110 passes through the mounting strip 107 and is connected to the ball screw 111. One end of the ball screw 111 is used to cooperate with the lead screw nut 112, and the other end is rotatably connected to the bracket 101.

[0037] In actual use, when it is necessary to control the position of the mounting strip 107 to move up and down, the operator needs to start the motor 110. After the motor 110 rotates, it drives the ball screw 111 to rotate. After the ball screw 111 rotates, it drives the moving block 109 to move under the action of the screw nut 112 and the guide rod 108, thereby achieving the purpose of driving the pressing roller 103 to move up and down after the motor 110 rotates.

[0038] In some embodiments, a U-shaped support portion 113 is provided on the mounting strip 107, the fixed end of the motor 110 is mounted on the U-shaped support portion 113, and the output shaft of the motor 110 passes through the U-shaped support portion 113 and the mounting strip 107 in sequence and is connected to the ball screw 111.

[0039] In actual use, the purpose of setting the U-shaped support part 113 is to facilitate the installation of the motor 110.

[0040] In some embodiments, a screw 114 is rotatably mounted on the pressure roller 103, and the screw 114 is threadedly connected to the movable block 109.

[0041] In actual use, the operator can adjust the front and rear position of the pressing roller 103 by rotating the screw 114 so that the mounting groove 104 on the pressing roller 103 and the mounting groove 104 on the conveying roller 102 are on the same plane.

[0042] In some embodiments, the motor 106 is provided with a mounting base 115.

[0043] In actual use, the main function of the mounting base 115 is to facilitate the installation of the motor 106, so that the motor 106 can be fixed on the plane.

[0044] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PE pipe bending die, characterized by , include: A bracket (101) for placement on a flat surface; A pipe bending device, which is used to be mounted on a bracket (101) and to bend the PE pipe body; The pipe bending device includes a conveying roller (102) and a pressing roller (103). The conveying roller (102) is rotatably mounted on the bracket (101). The conveying roller is used to rotate through a drive assembly. The pressing roller (103) is mounted on the bracket (101) through a moving assembly. The moving assembly is used to drive the pressing roller (103) to reciprocate in the vertical direction of the bracket (101). Both the conveying roller (102) and the pressing roller (103) are provided with a placement groove (104). The PE pipe body is used to be placed in the placement groove (104).

2. The PE pipe bending die according to claim 1, characterized in that: The conveying roller (102) is rotatably mounted on the bracket (101) via the rotating shaft (105).

3. The PE pipe bending die according to claim 2, characterized in that: The drive assembly includes a motor (106) and a transmission mechanism. The motor (106) is connected to the rotating shaft (105) through the transmission mechanism. The motor (106) is used to drive the rotating shaft (105) to rotate through the transmission mechanism.

4. The PE pipe bending die according to claim 3, characterized in that: The transmission mechanism is either a belt drive mechanism or a sprocket drive mechanism.

5. The PE pipe bending die according to claim 1, characterized in that: The movable component includes a mounting strip (107), guide rods (108), a screw drive structure, and a movable block (109). Two guide rods (108) are provided below the mounting strip (107). One end of the guide rod (108) is connected to the mounting strip (107), and the other end is provided on the bracket (101). The screw drive structure is provided on the mounting strip (107). The movable block (109) is slidably mounted on the two guide rods (108) through the screw drive structure. The pressing roller (103) is rotatably mounted on the movable block (109).

6. A PE pipe bending die according to claim 5, characterized in that: The lead screw drive structure includes a motor (110), a ball screw (111), and a lead screw nut (112). The lead screw nut (112) is fixedly mounted on the moving block (109). The fixed end of the motor (110) is set on the mounting strip (107). The output shaft of the motor (110) passes through the mounting strip (107) and is connected to the ball screw (111). One end of the ball screw (111) is used to cooperate with the lead screw nut (112), and the other end is rotatably connected to the bracket (101).

7. The PE pipe bending die according to claim 5, characterized in that: The mounting strip (107) is provided with a U-shaped support (113), the fixed end of the motor (110) is mounted on the U-shaped support (113), and the output shaft of the motor (110) passes through the U-shaped support (113) and the mounting strip (107) in sequence and is connected to the ball screw (111).

8. The PE pipe bending die according to claim 1, characterized in that: A screw (114) is rotatably mounted on the pressing roller (103), and the screw (114) is threadedly connected to the moving block (109).

9. The PE pipe bending die according to claim 3, characterized in that: The motor (106) is provided with a mounting base (115).

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