Polyethylene steel pipe sheath bending device

Abstract

The utility model belongs to the technical field of polyethylene pipes, and particularly relates to a polyethylene steel pipe sheath bending device which comprises bending groove plates assembled on the two sides of a bending mechanism in a rotating mode, a sliding plate is assembled on one side of each bending groove plate in a sliding mode, and one end of each sliding plate is fixedly connected with a friction disc. Conical grooves are formed in the side wall of the friction disc in an array mode, and a rotating rod is rotationally connected to the middle of the friction disc; according to the utility model, the length change of the polyethylene sheath can be always adapted through the sliding of the sliding plate, so that the rotating semi-ring can clamp the sheath, the fixed semi-ring and the buckling semi-ring can clamp and fix the initial bending part of the polyethylene sheath, and the rotating plate is controlled to rotate through the rotating rod; the fixing semi-ring and the buckling semi-ring can be made to be matched with the primary bending angle of the polyethylene sheath all the time, the polyethylene sheath is prevented from shaking and rotating during secondary bending, the stability is good, the firmness is high, and the secondary bending quality can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of polyethylene pipe technology, specifically relating to a polyethylene steel pipe sheath bending device. Background Technology

[0002] An existing patent (publication number: CN215619926U) discloses a polyethylene steel pipe sheath bending device, including a fixed rod and a bending mechanism. The upper surface of the fixed rod is provided with a bending groove. A fixing mechanism is provided above the fixed rod. The bending mechanism includes a bending rod, the size of which is the same as that of the fixed rod. The upper surface of the bending rod is also provided with a bending groove. A first fixing post passes through both sides of the bending rod. A rotating rod is rotatably connected to the first fixing post near both ends. The two ends of the rotating rod are provided with rotating grooves, the size of which is adapted to the rotating rod. Fixing caps are fixedly installed at both ends of the first fixing post.

[0003] However, when the sheath needs to be bent a second time, the straight length of the sheath is shortened after the first bend, and the fixing mechanism is difficult to move and adapt. This may result in the fixing mechanism being unable to lock and fix the sheath in place. Furthermore, during the second bend, the bent part of the sheath is left hanging in mid-air and cannot be fixed, resulting in poor stability and easy swaying from side to side, which will lead to a decrease in the quality of the second bend. Utility Model Content

[0004] The purpose of this invention is to provide a polyethylene steel pipe sheath bending device. The sliding plate can always adapt to changes in the length of the polyethylene sheath through sliding, allowing the rotating half-ring to clamp the sheath. The fixed half-ring and the snap-fit ​​half-ring can clamp and fix the initial bend of the polyethylene sheath. Furthermore, by controlling the rotation of the rotating plate with a rotating rod, the fixed half-ring and the snap-fit ​​half-ring can always adapt to the initial bend angle of the polyethylene sheath, preventing the polyethylene sheath from shaking and rotating during secondary bending. This device offers good stability, high strength, and improves the quality of secondary bending.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A polyethylene steel pipe sheath bending device includes bending groove plates rotatably assembled on both sides of a bending mechanism. A sliding plate is slidably assembled on one side of the bending groove plate. A friction disc is fixedly connected to one end of the sliding plate. The side wall of the friction disc has an array of conical grooves. A rotating rod is rotatably connected to the middle of the friction disc. A rotating plate is slidably fitted onto the outer wall of the rotating rod. A through hole is formed at one end of the rotating plate for the rotating rod to pass through. An insert plate is fixedly connected to the inner wall of the through hole in an array. An array of grooves is formed on the outer wall of one end of the rotating rod. A groove for sliding engagement with the insert plate; a tapered plate for movably engaging with the tapered groove is symmetrically fixedly connected to one side of the rotating plate; a thread is provided on the outer wall of the middle part of the rotating rod; a threaded tube is connected to the rotating rod via the thread; a protruding plate is symmetrically fixedly connected to one side of the threaded tube; a fixed half-ring is fixedly connected to one top end of the rotating plate; a snap-fit ​​half-ring is rotatably connected to one top end of the rotating plate and located on one side of the fixed half-ring; a hooking mechanism for hooking and fixing the snap-fit ​​half-ring is rotatably provided at one end of the fixed half-ring.

[0007] A baffle is rotatably connected to one end of the rotating rod and to the side of the thread, and a spring column is symmetrically and elastically connected to the rotating plate on the side opposite to the conical plate.

[0008] A limiting rod is fixedly connected to one side of the rotating plate and inside the spring column. The limiting rod is slidably engaged with the baffle. One end of the spring column is fixedly connected to the baffle.

[0009] The hooking mechanism includes a skirt plate fixedly connected to one end of the fixed half ring and the fastening half ring, wherein the width of the skirt plate at the fixed half ring end is greater than that at the fastening half ring end.

[0010] The skirt plate at one end of the fixed semi-ring is connected to a rotating handle in a damped rotatable manner, and a hook plate is fixedly connected to one end of the rotating handle.

[0011] The top of the other end of the sliding plate is rotatably connected to a rotating half-ring, and the bent groove plate is fixedly connected to a perforated plate on the side opposite to the sliding plate. The rotating half-ring is detachably screwed to the perforated plate by a fastening screw.

[0012] The technical effects achieved by this utility model are as follows: the sliding plate can always adapt to the length change of the polyethylene sheath by sliding, so that the rotating half ring can clamp the sheath, while the fixed half ring and the fastening half ring can clamp and fix the initial bending point of the polyethylene sheath. Moreover, by controlling the rotation of the rotating plate by the rotating rod, the fixed half ring and the fastening half ring can always adapt to the initial bending angle of the polyethylene sheath, preventing the polyethylene sheath from shaking and rotating during the second bending. It has good stability, high firmness, and can improve the quality of the second bending. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the polyethylene steel pipe sheath bending device provided in the embodiment of this utility model;

[0014] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0015] Figure 3 This is a structural side view of the polyethylene steel pipe sheath bending device provided in an embodiment of this utility model;

[0016] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0017] Figure 5 This is an exploded view of the rotating rod and friction disc provided in an embodiment of this utility model;

[0018] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0019] Figure 7 This is a side view of the rotating plate provided in an embodiment of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Bending groove plate; 101. Bending mechanism; 102. Sliding plate; 103. Rotating half ring; 104. Fastening screw; 105. Perforated plate; 106. Conical plate; 107. Friction disc; 108. Conical groove; 109. Rotating rod; 110. Rotating plate; 111. Perforation; 112. Insert plate; 113. Insert groove; 114. Thread; 115. Screw tube; 116. Protruding plate; 117. Limiting rod; 118. Spring column; 119. Fixed half ring; 120. Snap-on half ring; 121. Skirt plate; 122. Rotating handle; 123. Hook plate; 124. Baffle. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] like Figures 1-4 , Figure 7As shown, a polyethylene steel pipe sheath bending device includes bending groove plates 1 rotatably assembled on both sides of a bending mechanism 101. A sliding plate 102 is slidably assembled on one side of the bending groove plate 1. A friction disc 107 is fixedly connected to one end of the sliding plate 102, and a rotating half-ring 103 is rotatably connected to the top of the other end of the sliding plate 102. A perforated plate 105 is fixedly connected to the side of the bending groove plate 1 opposite to the sliding plate 102. The rotating half-ring 103 is detachably screwed to the perforated plate 105 by a fastening screw 104. A rotating rod 109 is rotatably connected to the middle of the friction disc 107. A rotating plate 110 is slidably sleeved on the outer wall of the rotating rod 109. A fixed half-ring 119 is fixedly connected to one end of the top of the rotating plate 110. A fastening half-ring 120 is rotatably connected to one end of the rotating plate 110 and located on one side of the fixed half-ring 119. A hooking mechanism for hooking the fixed fastening half-ring 120 is rotatably provided at one end of the fixed half-ring 119. The hooking mechanism includes a skirt plate 121 fixedly connected to one end of the fixed half-ring 119 and the fastening half-ring 120. The width of the skirt plate 121 at one end of the fixed half-ring 119 is greater than that at one end of the fastening half-ring 120. A rotating handle 122 is dampedly rotatably connected to one end of the rotating handle 122. A hook plate 123 is fixedly connected to one end of the rotating handle 122.

[0024] Based on the above structure, in this example, the specific structure and principle of the bending mechanism 101 are the same as those in the cited existing patent (publication number: CN215619926U). This is presented here as a prerequisite, not as the subject of innovation. After the polyethylene sheath is initially bent by the bending groove plate 1, its straight length is shortened. When a second bend is performed, the rotating handle 122 is rotated first, so that the hook plate 123 is perpendicular to the downward direction. The hook plate 123 no longer hooks the skirt plate 121 at one end of the buckling half ring 120. The buckling half ring 120 is opened by rotating. Then, the position of the rotating half ring 103 can be adjusted by sliding the sliding plate 102. After adjusting it to one side of the sheath, the rotating half ring 103 can be rotated so that one end of it is buckled onto the perforated plate 105. The fastening screw 104 passes through one end of the rotating half ring 103 and is screwed into the screw hole on the perforated plate 105 for fixation. At the same time, the position of the sliding plate 102 is also fixed.

[0025] See attached document Figure 2 , Figures 5-7The friction disc 107 has an array of tapered grooves 108 on its sidewalls. One end of the rotating plate 110 has a through hole 111 for the rotating rod 109 to pass through. An array of insert plates 112 are fixedly connected to the inner wall of the through hole 111. One end of the rotating rod 109 has an array of grooves 113 on its outer wall for sliding engagement with the insert plates 112. A tapered plate 106 is symmetrically fixedly connected to one side of the rotating plate 110 for movably engaging with the tapered grooves 108. A thread 114 is formed on the outer wall of the middle portion of the rotating rod 109. The rotating rod 109... A threaded tube 115 is threaded through thread 114. A convex plate 116 is symmetrically fixedly connected to one side of the threaded tube 115. A baffle 124 is rotatably connected to one end of the rotating rod 109 and located on the side of the thread 114. A spring column 118 is symmetrically elastically connected to the rotating plate 110 on the side opposite to the conical plate 106. A limiting rod 117 is fixedly connected to one side of the rotating plate 110 and located inside the spring column 118. The limiting rod 117 and the baffle 124 are slidably engaged through each other. One end of the spring column 118 is fixedly connected to the baffle 124.

[0026] According to the above structure, rotating the rotating rod 109, through the engagement of the groove 113 and the insert plate 112, can drive the rotating plate 110 to rotate together, while allowing the rotating plate 110 to slide back and forth along the rotating rod 109. When the rotating plate 110 rotates, it changes the position of the fixed half ring 119 and the fastening half ring 120 to adapt to polyethylene sheaths with different bending angles. After the angle is adjusted, rotating the screw tube 115 brings it close to the rotating plate 110, and the screw tube 115 is screwed into the thread 114. After the edge stops, the protruding plate 116 pushes the rotating plate 110 during the screwing process, bringing the rotating plate 110 close to the friction disk 107. As the rotating plate 110 moves, the insert plate 112 also slides in the groove 113, the spring column 118 extends at the same time, and the limiting rod 117 moves accordingly. The movement of the rotating plate 110 causes the conical plate 106 to engage with the conical groove 108. After the solenoid 115 stops rotating, it restricts the rotating plate 110 from continuing to slide. The engagement of the conical plate 106 with the conical groove 108 restricts the rotation of the plate. 110 continues to rotate, fixing the angles of the half-ring 119 and the snap-fit ​​half-ring 120. When it is necessary to adjust the rotating plate 110 again, rotate the screw tube 115 to bring it close to the baffle 124. The rotating plate 110 rebounds under the tension of the spring column 118, and the conical plate 106 disengages from the conical groove 108 to release the lock. The limiting rod 117 slides through both ends of the baffle 124, which can keep the spring column 118 stable during the extension and retraction process. This utility model can achieve the following through the sliding of the sliding plate 102: The rotating half-ring 103 can clamp the polyethylene sheath by adapting to changes in its length, while the fixed half-ring 119 and the snap-fit ​​half-ring 120 can clamp and fix the polyethylene sheath at the initial bend. The rotating plate 110 is controlled to rotate by the rotating rod 109, so that the fixed half-ring 119 and the snap-fit ​​half-ring 120 can always adapt to the initial bend angle of the polyethylene sheath, preventing the polyethylene sheath from shaking and rotating during the second bend. This results in good stability, high firmness, and improved quality of the second bend.

[0027] The working principle of this utility model is as follows: Based on the above structure, in this example, the specific structure and principle of the bending mechanism 101 are the same as those in the cited prior art (publication number: CN215619926U). This is presented here as a prerequisite, not as the main innovation. After the polyethylene sheath is initially bent by the bending groove plate 1, its straight length is shortened. When performing a second bend, first rotate the rotating handle 122 so that the hook plate 123 is perpendicular to the downward direction. The hook plate 123 will no longer hook onto the skirt plate 121 at one end of the buckling half ring 120, and the buckling half ring 120 will be opened by rotating. Then, by sliding the sliding plate 102, the position of the rotating half-ring 103 can be adjusted. After adjusting it to the side of the sheath, the rotating half-ring 103 can be rotated so that one end of it is fastened onto the perforated plate 105. The fastening screw 104 passes through one end of the rotating half-ring 103 and is screwed into the screw hole on the perforated plate 105 for fixation. At the same time, the position of the sliding plate 102 is also fixed. Rotating the rotating rod 109, the rotating rod 109 can drive the rotating plate 110 to rotate together through the engagement of the groove 113 and the insert plate 112. At the same time, the rotating plate 110 is allowed to slide back and forth along the rotating rod 109. When rotating, the positions of the fixed half-ring 119 and the fastening half-ring 120 are changed to adapt to polyethylene sheaths with different bending angles. After the angle is adjusted, the screw tube 115 is rotated to bring it close to the rotating plate 110. The screw tube 115 is screwed in to the edge of the thread 114 and then stops. During the screwing process, the convex plate 116 pushes the rotating plate 110, bringing the rotating plate 110 close to the friction disc 107. When the rotating plate 110 moves, the insert plate 112 also slides in the groove 113. The spring column 118 extends at the same time, and the limiting rod 117 moves accordingly. The movement of the rotating plate 110 causes the conical plate 106 to embed into the cone. After the groove 108 and the screw tube 115 stop rotating, the rotating plate 110 is restricted from continuing to slide. The engagement of the conical plate 106 and the conical groove 108 restricts the rotating plate 110 from continuing to rotate. The angles of the fixed half ring 119 and the snap-fit ​​half ring 120 are also fixed. When it is necessary to adjust the rotation of the rotating plate 110 again, the screw tube 115 is rotated to make it close to the baffle 124. The rotating plate 110 rebounds under the tension of the spring column 118. The conical plate 106 disengages from the conical groove 108 and is unlocked. The limiting rod 117 slides through both ends of the baffle 124, which can keep the spring column 118 stable during the extension and retraction process.

[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A polyethylene steel pipe sheath bending device, comprising a bending groove plate (1) rotatably assembled on both sides of a bending mechanism (101), characterized in that: A sliding plate (102) is slidably assembled on one side of the bent groove plate (1). A friction disk (107) is fixedly connected to one end of the sliding plate (102). The side wall of the friction disk (107) is provided with an array of conical grooves (108). A rotating rod (109) is rotatably connected to the middle of the friction disk (107). A rotating plate (110) is slidably sleeved on the outer wall of the rotating rod (109). A through hole (111) is provided at one end of the rotating plate (110) for the rotating rod (109) to pass through. A panel (112) is fixedly connected to the inner wall of the through hole (111) in an array. A groove (113) is provided on the outer wall of one end of the rotating rod (109) in an array for slidingly engaging with the panel (112). A tapered plate (106) for movably engaging with the tapered groove (108) is symmetrically fixedly connected to one side of the rotating plate (110). A thread (114) is provided on the outer wall of the middle part of the rotating rod (109). A screw tube (115) is threaded to the rotating rod (109) through the thread (114). A convex plate (116) is symmetrically fixedly connected to one side of the screw tube (115). A fixed half ring (119) is fixedly connected to one end of the top of the rotating plate (110). A snap-fit ​​half ring (120) is rotatably connected to one end of the top of the rotating plate (110) and located on one side of the fixed half ring (119). A hooking mechanism for hooking and fixing the snap-fit ​​half ring (120) is rotatably provided at one end of the fixed half ring (119).

2. A polyethylene sheathing bending device for a steel pipe according to claim 1, characterized in that: A baffle (124) is rotatably connected to one end of the rotating rod (109) and to one side of the thread (114). A spring column (118) is symmetrically and elastically connected to the rotating plate (110) on the side opposite to the conical plate (106).

3. A polyethylene sheathing bending device for a steel pipe according to claim 2, characterized in that: A limiting rod (117) is fixedly connected to one side of the rotating plate (110) and inside the spring column (118). The limiting rod (117) is slidably engaged with the baffle (124) through the plate. One end of the spring column (118) is fixedly connected to the baffle (124).

4. The polyethylene jacket bending device for a steel pipe of claim 1, wherein: The hooking mechanism includes a skirt plate (121) fixedly connected to one end of the fixed half ring (119) and the fastening half ring (120), wherein the width of the skirt plate (121) at one end of the fixed half ring (119) is greater than the width of the skirt plate (121) at one end of the fastening half ring (120).

5. A polyethylene jacket bending device for a steel pipe according to claim 4, characterized in that: The skirt plate (121) at one end of the fixed half ring (119) is damped and rotatably connected to a rotating handle (122), and a hook plate (123) is fixedly connected to one end of the rotating handle (122).

6. A polyethylene jacket bending device for a steel pipe according to claim 1, characterized in that: The top of the other end of the sliding plate (102) is rotatably connected to a rotating half-ring (103). The bent groove plate (1) is fixedly connected to a perforated plate (105) on the side opposite to the sliding plate (102). The rotating half-ring (103) is detachably screwed to the perforated plate (105) by a fastening screw (104).

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