A kind of plum blossom shape pipe rolling mechanism

Abstract

The utility model discloses a kind of rolling mechanism for plum blossom pipe, including the workbench (1) of axially movable, upper roller (2) and lower roller (3) are equipped in workbench (1), and upper roller (2) and lower roller (3) are respectively equipped with upper rolling groove and lower rolling groove in middle part, and upper rolling groove and lower rolling groove form extrusion cavity (4) after enclosing, and the middle part of extrusion cavity (4) is equipped with plum blossom top head (5), and one end of plum blossom top head (5) extends to the outside of workbench (1) and is connected with core rod lever (6).The utility model can realize the rolling forming of plum blossom pipe, and has the characteristics of good versatility.

Description

Technical Field

[0001] This utility model relates to a plum blossom-shaped pipe processing device, and more particularly to a plum blossom-shaped pipe rolling mechanism. Background Technology

[0002] Plum blossom-shaped tubing is a tubular structure with a cross-sectional shape resembling a plum blossom. Existing processing methods for plum blossom-shaped tubing, as shown in patent 202411527065.1, involve installing several pressure rollers around the tubular blank, which, when closed, form a plum blossom-shaped forming cavity. After the tubular blank passes through the forming cavity, it is extruded by the pressure rollers, causing it to shrink inward and form the corresponding plum blossom shape. However, this structure is only suitable for plum blossom-shaped tubing with a small number of petals. Once the number of petals on the tubing surface reaches six or more, manufacturers cannot increase the number of pressure rollers to achieve the same extrusion forming effect, thus reducing the processing efficiency of the plum blossom-shaped tubing.

[0003] Therefore, existing processing equipment for plum blossom-shaped pipes suffers from poor versatility. Utility Model Content

[0004] The purpose of this invention is to provide a rolling mechanism for plum blossom-shaped tubes. It can achieve the rolling and forming of plum blossom-shaped tubes and has the characteristics of good versatility.

[0005] The technical solution of this utility model is as follows: a rolling mechanism for plum blossom-shaped tubes, including an axially movable work frame, on which upper and lower rolls are provided at intervals, and upper and lower grooves are respectively provided in the middle of the upper and lower rolls. The upper and lower grooves form an extrusion cavity after being enclosed, and a plum blossom top is provided in the middle of the extrusion cavity. One end of the plum blossom top extends to the outside of the work frame and is connected to a mandrel rod. The work frame is used to drive the upper and lower rolls to reciprocate along the axial direction of the plum blossom mandrel; The plum blossom-shaped mandrel is used to guide the round tube blank and limit its inner hole. The extrusion chamber is used to extrude the round tube blank as the work frame moves axially, causing the round tube blank to shrink inward and form a plum blossom shape as it is extruded.

[0006] In the aforementioned plum blossom-shaped tube rolling mechanism, the lower roll is fixedly connected to the work frame via a lower rotating seat, which is symmetrically arranged on the left and right sides of the lower roll. The upper roll is slidably connected to the work frame via an upper rotating seat, which is symmetrically arranged on the left and right sides of the upper rotating seat. The upper rotating seat and the lower rotating seat are connected to each other via a height adjustment assembly.

[0007] In the aforementioned plum blossom-shaped tube rolling mechanism, the height adjustment component includes a pressing mechanism and an elastic element. The elastic element is located between the upper rotating seat and the lower rotating seat and is used to apply an upward pressing force to the upper rotating seat. The pressing mechanism is used to limit the height of the upper rotating seat.

[0008] In the aforementioned plum blossom-shaped tube rolling mechanism, the pressing mechanism includes a positioning plate located between the work frame and the upper rotating seat. An adjusting screw is rotatably connected to the positioning plate, and two symmetrical adjusting plates are threadedly connected to the middle of the adjusting screw. A pressure plate is fastened to the bottom of the positioning plate, and the pressure plate and the adjusting plate are in contact with each other through inclined contact surfaces. The adjusting screw is used to drive the adjusting plates on both sides to move horizontally after rotation; The adjusting plate is used to adjust the height of the pressure plate via the contact surface after horizontal movement; The pressure plate is used to limit the height of the upper rotating seat.

[0009] In the aforementioned plum blossom-shaped tube rolling mechanism, a first positioning component is connected between the upper rotating seat and the lower rotating seat. The first positioning component includes a locking block and a locking groove located on the upper rotating seat and the lower rotating seat, respectively. The locking block and the locking groove are used to laterally limit the upper rotating seat and the lower rotating seat after they are engaged.

[0010] In the aforementioned plum blossom-shaped tube rolling mechanism, the upper rotating seat or the lower rotating seat is connected to the work frame via a second positioning component, which limits the lateral position of the upper rotating seat or the lower rotating seat relative to the work frame.

[0011] In the aforementioned plum blossom-shaped tube rolling mechanism, the second positioning component includes positioning screws detachably connected to both sides of the work frame. One end of the positioning screw extends to the outside of the work frame and is connected to a clamping block. The two sides of the upper rotating seat or the lower rotating seat are fastened together with two clamping blocks.

[0012] Compared with the prior art, this utility model has the following characteristics: (1) This utility model uses the cooperation of the upper roll, the lower roll and the plum blossom mandrel to make the upper roll and the lower roll able to roll the round tube blank sleeved outside the plum blossom mandrel, thereby causing the round tube blank to shrink inward under the rolling action and form undulations with the surface of the plum blossom mandrel, thus realizing the rolling of plum blossom-shaped tubes. (2) By limiting the structure of the height adjustment component, this utility model can adjust the height of the upper rotating seat by rotating the adjustment screw, thereby facilitating the manufacturer to adjust the interval between the upper and lower rollers during the rolling process; by cooperating with the first positioning component and the second positioning component, the lateral position of the upper rotating seat and the lower rotating seat can be positioned, that is, to ensure the positional stability of the extrusion chamber and the forming effect. Therefore, this utility model can realize the rolling and forming of plum blossom-shaped tubes and has the characteristics of good versatility. Attached Figure Description

[0013] Figure 1 This is the outline drawing of this utility model; Figure 2 This is a front view of the present invention; Figure 3 yes Figure 2 Sectional view along direction A; Figure 4 yes Figure 3 C-axis magnified view; Figure 5 yes Figure 3 A magnified view from direction B; Figure 6 yes Figure 2 Sectional view along direction B.

[0014] The markings in the attached diagram are as follows: 1-Working frame, 2-Upper roller, 3-Lower roller, 4-Extrusion chamber, 5-Petal-shaped mandrel, 6-Mandrel rod, 7-Lower rotating seat, 8-Upper rotating seat, 9-Elastic element, 10-Positioning plate, 11-Adjusting screw, 12-Adjusting plate, 13-Pressure plate, 14-Contact surface, 15-Clamping block, 16-Clamping groove, 17-Positioning screw, 18-Clamping block. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0016] Example. A rolling mechanism for plum blossom-shaped tubes, configured as follows: Figure 1 As shown, the device includes an axially movable work frame 1, on which upper rolls 2 and lower rolls 3 are arranged at intervals. Upper rolls 2 and lower rolls 3 are respectively provided in the middle of the upper rolls 2 and lower rolls 3. The upper rolls 2 and lower rolls 3 form a circular extrusion cavity 4 after being enclosed. A plum blossom head 5 is provided in the middle of the extrusion cavity 4. The cross-sectional shape of the plum blossom head 5 is plum blossom-shaped. The outer diameter of the plum blossom head 5 is smaller than the inner diameter of the round tube blank. One end of the plum blossom head 5 extends to the outside of the work frame 1 and is threadedly connected to a mandrel rod 6. The external drive mechanism of the work frame 1 drives the work frame 1 to reciprocate along the axis of the plum blossom top 5. The plum blossom top 5 is used to guide the round tube blank and limit its inner hole. The extrusion chamber 4 is used to extrude the round tube blank as the work frame 1 moves axially, so that the round tube blank shrinks inward as it is extruded and forms a plum blossom shape with the same shape as the plum blossom head 5 on the outside of the plum blossom head 5.

[0017] The plum blossom mandrel 5 includes a feeding section, a parallel section, a working section, and a demolding section arranged sequentially along the axial direction. The feeding section has a conical structure with an outer diameter that gradually increases along the direction of tube blank movement and is used to feed the tube blank. The parallel section has a cylindrical structure and is used to adjust the length of the working section. The working section has a conical structure with an outer diameter that gradually decreases along the direction of tube blank movement and is used to limit the inner hole of the tube blank during tube blank extrusion, so that the tube blank can form undulations with the surface of the working section during shrinkage, thus forming a plum blossom shape. The demolding section has a conical structure with a larger taper than the working section, thereby facilitating the demolding of the tube blank after forming.

[0018] The lower roller 3 is fixedly connected to the work frame 1 via the lower rotating seat 7. The lower rotating seat 7 is symmetrically arranged on the left and right sides of the lower roller 3. The lower roller 3 and the lower rotating seat 7 are rotatably connected. One end of the lower roller 3 extends to the outside of the lower rotating seat 7 and is connected to the lower drive gear. The upper roller 2 is slidably connected to the work frame 1 via the upper rotating seat 8. The upper rotating seat 8 is symmetrically arranged on the left and right sides of the upper rotating seat 8. The upper roller 2 and the upper rotating seat 8 are rotatably connected. One end of the upper roller 2 extends to the outside of the upper rotating seat 8 and is connected to the upper drive gear. In use, the lower roller 3 and the upper roller 2 are driven to rotate in opposite directions by an external transmission mechanism via the lower drive gear and the upper drive gear, thereby realizing the rolling of the round tube blank. The upper rotating seat 8 and the lower rotating seat 7 are connected to each other by a height adjustment assembly.

[0019] The height adjustment assembly includes a pressing mechanism and four elastic elements 9 located on both sides of the joint of each upper rotating seat 8 and lower rotating seat 7, and is used to apply an upward pressing force to the upper rotating seat 8. The pressing mechanism is used to limit the height of the upper rotating seat 8.

[0020] Both the upper rotating seat 8 and the lower rotating seat 7 are provided with a fastening groove for fastening the elastic element 9. The upper and lower ends of the elastic element 9 are fastened and connected in the fastening grooves of the upper rotating seat 8 and the lower rotating seat 7, respectively. The elastic element 9 can be a disc spring and is fastened in the fastening groove by a bolt structure.

[0021] The pressing mechanism includes a positioning plate 10 located between the working frame 1 and the upper rotating seat 8. An adjusting screw 11 is rotatably connected to the positioning plate 10. Two symmetrical adjusting plates 12 are threadedly connected to the middle of the adjusting screw 11. A pressure plate 13 is fastened to the bottom of the positioning plate 10. The pressure plate 13 and the adjusting plate 12 are in contact with each other through an inclined contact surface 14. The adjusting screw 11 is used to drive the two adjusting plates 12 on both sides to move in opposite directions or in reverse after rotation; The adjusting plate 12 is used to adjust the height of the pressure plate 13 via the contact surface 14 after horizontal movement, so that the pressure plate 13 moves up or down as the adjusting plate 12 moves. The pressure plate 13 is used to limit the height of the upper rotating seat 8 after lifting and lowering, and works with the elastic element 9 to adjust the height of the upper rotating seat 8.

[0022] The external screw of the adjusting screw 11 is connected to a drive sleeve. The external drive mechanism can control the adjusting screw 11 to rotate through the drive sleeve, thereby realizing the height adjustment of the upper rotating seat 8.

[0023] A first positioning component is connected between the upper rotating seat 8 and the lower rotating seat 7. The first positioning component includes a locking block 15 and a locking groove 16 located on the upper rotating seat 8 and the lower rotating seat 7, respectively. The locking block 15 and the locking groove 16 are located between the elastic members 9 on both sides and are offset from the elastic members 9. The locking block 15 and the locking groove 16 are used to laterally limit the upper rotating seat 8 and the lower rotating seat 7 after they are engaged. A gap is left between the locking block 15 and the locking groove 16 for the upper rotating seat 8 to slide up and down.

[0024] The upper rotating seat 8 is connected to the work frame 1 via a second positioning component, which limits the lateral position of the upper rotating seat 8 relative to the work frame 1.

[0025] The second positioning component includes positioning screws 17 detachably connected to both sides of the work frame 1. Both ends of the positioning screws 17 extend to the outside of the work frame 1 and are threaded with mounting nuts. One end of the positioning screws 17 extends to the outside of the work frame 1 and is slidably connected with a clamping block 18. The clamping block 18 is fixed by the cooperation of the mounting nut and the work frame 1. The two sides of the upper rotating seat 8 are fastened with two clamping blocks 18, and the middle of the clamping block 18 forms a U-shaped groove that cooperates with the upper rotating seat 8.

[0026] In this embodiment, during use, the round tube blank moves horizontally along the mandrel 6 to the outside of the plum blossom mandrel 5. Then, the work stand 1 drives the upper roll 2 and lower roll 3 to move axially, and the external drive mechanism drives the upper rotating seat 8 to descend by rotating the adjusting screw 11, thereby causing the upper roll 2 and lower roll 3 to gradually close and roll the round tube blank fitted outside the plum blossom mandrel 5. The round tube blank shrinks inward under the extrusion of the upper roll 2 and lower roll 3, and then adheres to the surface of the plum blossom mandrel 5, thus forming a plum blossom shape with the same shape as the plum blossom mandrel 5. After the plum blossom-shaped tube is rolled, the work stand 1 is moved back to its original position and the upper roll 2 and lower roll 3 reopen. Then, the round tube blank continues to move forward, causing the plum blossom-shaped tube outside the plum blossom mandrel 5 to detach from the plum blossom mandrel 5, completing one rolling operation of the round tube blank.

Claims

1. A rolling mechanism for plum blossom-shaped tubes, characterized in that: The device includes an axially movable work frame (1), on which upper rolls (2) and lower rolls (3) are arranged at intervals. Upper and lower grooves are respectively provided in the middle of the upper rolls (2) and lower rolls (3). The upper and lower grooves form an extrusion cavity (4) after being enclosed. A plum blossom head (5) is provided in the middle of the extrusion cavity (4). One end of the plum blossom head (5) extends to the outside of the work frame (1) and is connected to a mandrel rod (6). The work frame (1) is used to drive the upper roll (2) and the lower roll (3) to reciprocate along the axial direction of the plum blossom head (5); The plum blossom top (5) is used to guide the round tube blank and limit its inner hole. The extrusion chamber (4) is used to extrude the round tube blank as the work frame (1) moves axially, so that the round tube blank shrinks inward as it is extruded and forms a plum blossom shape.

2. The rolling mechanism for plum blossom-shaped tubes according to claim 1, characterized in that: The lower roller (3) is fixedly connected to the work frame (1) via the lower rotating seat (7). The lower rotating seat (7) is symmetrically arranged on the left and right sides of the lower roller (3). The upper roller (2) is slidably connected to the work frame (1) via the upper rotating seat (8). The upper rotating seat (8) is symmetrically arranged on the left and right sides of the upper rotating seat (8). The upper rotating seat (8) and the lower rotating seat (7) are connected to each other via a height adjustment assembly.

3. The rolling mechanism for plum blossom-shaped tubes according to claim 2, characterized in that: The height adjustment assembly includes a pressing mechanism and an elastic element (9). The elastic element (9) is located between the upper rotating seat (8) and the lower rotating seat (7) and is used to apply an upward pressing force to the upper rotating seat (8). The pressing mechanism is used to limit the height of the upper rotating seat (8).

4. The rolling mechanism for plum blossom-shaped tubes according to claim 3, characterized in that: The pressing mechanism includes a positioning plate (10) located between the work frame (1) and the upper rotating seat (8), and an adjusting screw (11) is rotatably connected to the positioning plate (10); two symmetrical adjusting plates (12) are threadedly connected to the middle of the adjusting screw (11), and a pressure plate (13) is fastened to the bottom of the positioning plate (10); the pressure plate (13) and the adjusting plate (12) are in contact with each other through an inclined contact surface (14); The adjusting screw (11) is used to drive the adjusting plates (12) on both sides to move horizontally after rotation; The adjusting plate (12) is used to adjust the height of the pressure plate (13) via the contact surface (14) after horizontal movement; The pressure plate (13) is used to limit the height of the upper rotating seat (8).

5. A rolling mechanism for plum blossom-shaped tubes according to claim 2, characterized in that: A first positioning component is connected between the upper rotating seat (8) and the lower rotating seat (7). The first positioning component includes a locking block (15) and a locking groove (16) located on the upper rotating seat (8) and the lower rotating seat (7) respectively. The locking block (15) and the locking groove (16) are used to laterally limit the upper rotating seat (8) and the lower rotating seat (7) after they are engaged.

6. A rolling mechanism for plum blossom-shaped tubes according to claim 2, characterized in that: The upper rotating seat (8) or the lower rotating seat (7) is connected to the work frame (1) via a second positioning component. The second positioning component is used to limit the lateral position of the upper rotating seat (8) or the lower rotating seat (7) relative to the work frame (1).

7. A rolling mechanism for plum blossom-shaped tubes according to claim 6, characterized in that: The second positioning component includes positioning screws (17) detachably connected to both sides of the work frame (1). One end of the positioning screw (17) extends to the outside of the work frame (1) and is connected to a clamping block (18). The two clamping blocks (18) are fastened to both sides of the upper rotating seat (8) or the lower rotating seat (7).

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