Hydraulic three-roller forming device for straight cylinder edge rolling
By setting a rotating pressure roller, an active rotation roller and a limiting assembly in the hydraulic three-roll forming device of the straight roll round, the problems of large internal stress of the straight barrel and plate offset after forming are solved, and lower deformation and higher molding effect are achieved.
Patent Information
- Application Number
- CN202520490822.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2035-03-20
AI Technical Summary
During the forming process of the straight-tube roll round hydraulic three-roll molding device, the internal stress is high, which easily causes deformation, and the plate is easily deviated during the forming movement, resulting in the misalignment of the edges of the straight-tube after forming, affecting the forming effect.
By setting up a rotating press roller, an active rotating roller and a limiting assembly, the rotating press roller repeatedly moves up and down during down pressure. The active rotating roller drives the plate to circle and limits the movement of the plate through the limiting assembly to ensure that it maintains linear motion during the forming process.
It reduces the stress inside the straight barrel after forming, reduces deformation phenomenon, and prevents the sheet from being offset, ensures the edges of the straight barrel after forming, and improves the forming effect.
Smart Images
Figure CN222767034U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of straight tube processing, in particular to a hydraulic three-roller forming device for rolling a straight tube. Background Art
[0002] The hydraulic three-roller rolling machine is a kind of equipment used for processing metal sheets. It can roll metal sheets into round, arc and conical workpieces within a certain range. The characteristics of this machine are that the upper roller can be lifted vertically, and the lifting movement is obtained by the hydraulic oil in the hydraulic cylinder acting on the piston rod, while the lower roller provides rotation drive. The hydraulic three-roller rolling machine is widely used in shipbuilding, boilers, aviation, hydropower, chemical industry, metal structure and machinery manufacturing industries. Therefore, in the production process of straight tubes, the hydraulic three-roller forming device can be used for rolling operations, but it still has the following disadvantages in actual use:
[0003] 1. When the hydraulic three-roller forming device for straight tube rolling is working, it is directly formed by the hydraulic three-roller. During the forming process, the hydraulic three-roller works and directly transports the plate between the pressure rollers for forming. During the forming process, the straight tube is rolled once, and the internal stress is large, which is easy to deform;
[0004] 2. During production, the hydraulic three-roller forming device for straight tube rolling directly transports the straight tube sheet to the rolling device so that the sheet is rolled into a straight tube. However, during operation, if the sheet movement is offset, it is easy to cause the edges of the formed straight tube to be misaligned, affecting the forming effect of the straight tube. Utility Model Content
[0005] The utility model aims to provide a hydraulic three-roller forming device for rolling a straight cylinder. By arranging a rotating pressure roller, an active rotating roller and a limit assembly, the utility model solves the problems that the internal forming stress of the straight cylinder formed by the hydraulic three-roller forming device for rolling a straight cylinder is large and easy to deform after rolling, and the plate is easy to deviate during the forming movement process, resulting in irregular straight cylinder after forming.
[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0007] The utility model discloses a hydraulic three-roll forming device for rolling a straight tube into a round shape, comprising a rotating pressure roller, an active roller and a limiting component, wherein an active roller is symmetrically arranged below the rotating pressure roller, the two active rollers are parallel to each other, and the outer sides of the two active rollers are movably connected to the limiting component, and the limiting component comprises two limiting plates and sleeve holes, and the sleeve holes are symmetrically opened in the two limiting plates, and the two active rollers are respectively movably connected to the sleeve holes in the limiting plates. When working, the rotating pressure roller presses down the raw material of the straight tube and repeatedly moves up and down to press, so that the raw material of the straight tube is rolled into a tube shape, and the active roller forces the raw material of the straight tube to be rolled into a round shape when pressing down, and the active roller drives the raw material of the straight tube to enter between the rotating roller and the active roller when rotating, and the limiting component limits the straight tube sheet from entering between the active roller and the rotating pressure roller.
[0008] Furthermore, both ends of the rotating pressure roller and the active roller are provided with support frames, and the support frames are arranged below the rotating pressure roller. When the rotating pressure roller is working, the active roller is supported on the ground by the support frames.
[0009] Furthermore, both ends of the rotating pressure roller are rotatably connected to a lifting block, and the bottoms of the two lifting blocks are provided with electric push rods. The telescopic ends of the two electric push rods are fixed to the bottoms of the lifting blocks. The two electric push rods are respectively arranged in two supporting frames. The rotating pressure roller is connected to the telescopic end of the electric push rod through the lifting block, and the rotating pressure roller is driven to rise and fall by the electric push rod when it is raised and lowered.
[0010] Furthermore, hydraulic motors are provided at both ends of the active roller, and the output ends of the two hydraulic motors are respectively fixed to the two ends of the active roller, and the input end and the output end of the hydraulic motor are fixedly connected with hydraulic pipelines. The hydraulic motors at both ends of the active roller are respectively fixed on the top of the two support frames, and the hydraulic oil enters the hydraulic pipeline to drive the active roller to rotate, thereby driving the plate to be processed into a straight cylinder to be rolled into a cylinder.
[0011] Furthermore, the limiting assembly includes a rotating frame and a threaded rod, and the threaded rods are fixed to both ends of the rotating frame. The limiting assembly rotates through the rotating frame to drive the threaded rods to rotate.
[0012] Furthermore, the limiting assembly also includes a turntable and a movable plate. A turntable is fixed to one end of the threaded rod away from the rotating frame. The circumferential sides of the two threaded rods are threadedly connected with movable plates. The tops of the two movable plates are respectively fixed to the bottoms of the two limiting plates. When the threaded rod rotates, the movable plate is driven to move, so that the position of the limiting plate is limited.
[0013] The utility model has the following beneficial effects:
[0014] 1. The utility model solves the problem that the internal forming stress of the straight cylinder formed after rolling is large and easy to deform by arranging a rotating pressure roller for a hydraulic three-roller forming device for straight cylinder rolling. The hydraulic oil is input into the hydraulic motor to drive the active roller to rotate. The active roller rotates, so that the plate of the cylinder is transported between the active roller and the rotating pressure roller. Then the lifting block is driven to rise by the electric push rod. When the lifting block descends, it drives the rotating pressure roller to descend, so that the plate material of the cylinder is pressed and rolled at the same time. In the working process, the electric push rod repeatedly drives the rotating pressure roller to rise and fall, so that when working, the rotating pressure roller repeatedly rolls the plate, reduces the stress inside the straight cylinder after forming, and reduces the deformation inside the straight cylinder after forming.
[0015] 2. The utility model solves the problem that the plate on the hydraulic three-roll forming device of straight cylinder rolling is easily offset during the forming movement, causing irregularity after straight cylinder forming, by arranging a rotating pressure roller, an active rotating roller and a limiting component. The distance between the two limiting plates is determined, the rotating frame is rotated, and the threaded rod is driven to rotate. The rotation of the threaded rod is threadedly connected with the movable plate to change the movement position of the two movable plates. After the position of the movable plate is changed, the position of the limiting plate is driven to change. When working, the plate is aligned with the gap between the rotating pressure roller and the active rotating roller, and the active rotating roller rotates to roll the plate into a straight cylinder shape. After the limiting component limits the movement range of the plate, the plate on the hydraulic three-roll forming device of straight cylinder rolling can be placed between the two limiting plates included in the limiting component during the forming movement, and keep moving linearly between the rotating pressure roller and the active rotating roller, thereby reducing the offset causing irregularity after straight cylinder forming. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a three-dimensional diagram of the assembly structure of a hydraulic three-roller forming device for rolling a straight tube;
[0018] Figure 2 It is a three-dimensional diagram of the support frame structure;
[0019] Figure 3 It is a three-dimensional diagram of the rotating pressure roller structure;
[0020] Figure 4 It is a three-dimensional diagram of the active roller structure;
[0021] Figure 5 It is a three-dimensional diagram of the limit component structure.
[0022] Reference numerals:
[0023] 1. Support frame; 2. Rotating pressure roller; 201. Lifting block; 202. Electric push rod; 3. Active roller; 301. Hydraulic motor; 302. Hydraulic pipeline; 4. Limiting assembly; 401. Rotating frame; 402. Threaded rod; 403. Turntable; 404. Moving plate; 405. Limiting plate; 406. Hole. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1
[0026] See also Figure 1-4 The utility model is a hydraulic three-roller forming device for rolling a straight tube, comprising a rotating pressure roller 2, an active roller 3 and a limit assembly 4. The active roller 3 is symmetrically arranged below the rotating pressure roller 2. After the rotating pressure roller 2 is pressed down onto the raw material of the straight tube, the raw material of the straight tube is roll-formed. When the active roller 3 rotates, the raw material of the straight tube is driven to roll. The two active rollers 3 are parallel to each other, so that when the active rollers 3 rotate, the raw material of the straight tube is conveyed to the bottom of the active rollers 3 and rolled into a straight tube. The outer sides of the two active rollers 3 are movably connected with a limit assembly. Component 4 limits the position of the straight-tube raw material entering the gap between the rotating pressure roller 2 and the active roller 3 through the limiting component 4. The limiting component 4 includes two limiting plates 405 and sleeve holes 406. The two limiting plates 405 are symmetrically provided with sleeve holes 406. The two active rollers 3 are movably connected in the sleeve holes 406 in the limiting plates 405. When working, the active rollers 3 are movably connected in the sleeve holes 406 on the two limiting plates 405, so that the two limiting plates 405 limit the position of the roll raw material entering the gap between the rotating pressure roller 2 and the active roller 3.
[0027] Specifically, support frames 1 are provided at both ends of the rotating pressure roller 2 and the active roller 3 . The support frames 1 are provided below the rotating pressure roller 2 , and the active roller 3 is supported on the ground by the support frames 1 .
[0028] Furthermore, both ends of the rotating pressing roller 2 are rotatably connected to the lifting block 201, and the bottom of the two lifting blocks 201 are provided with electric push rods 202. The telescopic ends of the two electric push rods 202 are fixed to the bottom of the lifting block 201. The two electric push rods 202 are respectively arranged in the two support frames 1. When the rotating pressing roller 2 is working, the lifting block 201 is driven to rise by the electric push rod 202. When the lifting block 201 descends, the rotating pressing roller 2 is driven to descend, so that the sheet material of the cylinder is pressed and the rolling operation is performed.
[0029] Furthermore, hydraulic motors 301 are provided at both ends of the active roller 3, and the output ends of the two hydraulic motors 301 are respectively fixed to the two ends of the active roller 3, and the input end and the output end of the hydraulic motor 301 are fixedly connected with hydraulic pipes 302. The hydraulic motors 301 at both ends of the active roller 3 are respectively fixed on the tops of the two support frames 1, and the two hydraulic pipes 302 on the same hydraulic motor 301 are respectively connected to the pipelines for inputting and outputting hydraulic oil. When the active roller 3 is working, the hydraulic oil is input into the hydraulic motor 301 to drive the active roller 3 to rotate.
[0030] The operation process of this embodiment is as follows: when working, hydraulic oil is input into the hydraulic motor 301 to drive the active roller 3 to rotate. Through the rotation of the active roller 3, the plate material of the cylinder is transported to between the active roller 3 and the rotating pressure roller 2, and then the lifting block 201 is driven to rise through the electric push rod 202. When the lifting block 201 descends, it drives the rotating pressure roller 2 to descend, so that the plate material of the cylinder is pressed and rolled at the same time. In the process of working, the electric push rod 202 repeatedly drives the rotating pressure roller 2 to rise and fall, so that when working, the rotating pressure roller 2 repeatedly rolls the plate. Specific embodiment 2
[0032] See also Figure 1 , 2 5. On the basis of the specific embodiment 1, the limit assembly 4 includes a rotating frame 401 and a threaded rod 402. The threaded rods 402 are fixed at both ends of the rotating frame 401. The thread directions of the two threaded rods 402 are opposite, and the ends close to the rotating frame 401 are smoothly arranged. When the rotating frame 401 is controlled to rotate, the two threaded rods 402 are driven to rotate at the same time.
[0033] Specifically, the limiting assembly 4 also includes a turntable 403 and a movable plate 404. The turntable 403 is fixed at one end of the threaded rod 402 away from the rotating frame 401. The movable plates 404 are threadedly connected to the circumferential sides of the two threaded rods 402. The tops of the two movable plates 404 are respectively fixed to the bottoms of the two limiting plates 405. The threaded rod 402 limits its position on the movable plate 404 through the turntable 403. During operation, the rotating frame 401 is controlled to rotate, and the threaded rod 402 is driven to rotate. Since the threaded rod 402 and the movable plate 404 are threadedly connected, and the thread directions of the two threaded rods 402 are opposite, the two movable plates 404 are controlled to move closer to or farther away from each other. During the movement of the movable plate 404, the limiting plate 405 is driven to move. The limiting plate 405 is mutually sleeved with the two active rollers 3 through the sleeve hole 406. Therefore, when the two limiting plates 405 move, the movement direction can only move along the axial direction of the active roller 3.
[0034] The operation process of this embodiment is as follows: when working, first determine the length of the rolled plate that needs to be limited between the two limit plates 405, determine the distance between the limit plates 405, control the rotation of the rotating frame 401, drive the threaded rod 402 to rotate, and the threaded rod 402 with two opposite thread directions and the movable plate 404 are threadedly connected to drive the two movable plates 404 to move closer to or away from each other, until the two movable plates 404 drive the two limit plates 405 to move to a suitable spacing, stop the rotation of the rotating frame 401, and then carry out the rolling operation of the plate. After aligning the plate with the gap between the rotating pressure roller 2 and the active roller 3, the plate is delivered between the two limit plates 405 to the rotating pressure roller 2 and the active roller 3. The two limit plates 405 limit the position of the plate when rolling and rolling between the rotating pressure roller 2 and the active roller 3 to prevent the plate from deviating during the rolling process and causing errors in the shape and size of the roll. The active roller 3 rotates to roll the plate into a straight cylinder.
[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A hydraulic three-roller forming device for rolling a straight tube, comprising a rotating pressure roller (2), an active rotating roller (3) and a limit assembly (4), characterized in that: Active rollers (3) are symmetrically arranged below the rotating pressure roller (2). The two active rollers (3) are parallel to each other. The outer sides of the two active rollers (3) are movably connected to a limiting assembly (4). The limiting assembly (4) comprises two limiting plates (405) and sleeve holes (406). The two limiting plates (405) are symmetrically provided with sleeve holes (406). The two active rollers (3) are respectively movably connected to the sleeve holes (406) in the limiting plates (405).
2. A hydraulic three-roller forming device for straight tube rolling according to claim 1, characterized in that: Support frames (1) are provided at both ends of the rotating pressure roller (2) and the active rotating roller (3), and the support frames (1) are arranged below the rotating pressure roller (2).
3. A hydraulic three-roller forming device for straight tube rolling according to claim 2, characterized in that: Both ends of the rotating pressure roller (2) are rotatably connected to a lifting block (201), the bottoms of the two lifting blocks (201) are provided with electric push rods (202), the telescopic ends of the two electric push rods (202) are fixed to the bottoms of the lifting blocks (201), and the two electric push rods (202) are respectively arranged in two support frames (1).
4. A hydraulic three-roller forming device for straight tube rolling according to claim 2, characterized in that: Both ends of the active roller (3) are provided with hydraulic motors (301); the output ends of the two hydraulic motors (301) are respectively fixed to the two ends of the active roller (3); the input end and the output end of the hydraulic motor (301) are both fixedly connected to hydraulic pipelines (302); and the hydraulic motors (301) at both ends of the active roller (3) are respectively fixed to the tops of the two support frames (1).
5. The hydraulic three-roller forming device for straight tube rolling according to claim 1, characterized in that: The limiting assembly (4) comprises a rotating frame (401) and a threaded rod (402), and the threaded rod (402) is fixed to both ends of the rotating frame (401).
6. A hydraulic three-roller forming device for straight tube rolling according to claim 5, characterized in that: The limiting assembly (4) further comprises a rotating disk (403) and a movable plate (404); the rotating disk (403) is fixed to one end of the threaded rod (402) away from the rotating frame (401); the circumferential sides of the two threaded rods (402) are threadedly connected to the movable plates (404); and the tops of the two movable plates (404) are respectively fixed to the bottoms of the two limiting plates (405).