Rolling device for multi-fold elastic metal sealing ring

Abstract

The utility model provides a rolling device for a multi-fold elastic metal sealing ring, and aims to solve the problems that in the prior art, when a multi-pass rolling device is used for machining a sealing ring, rollers need to be replaced frequently, so that the possibility of errors in the machining aspect is large, and the yield is low. The device mainly comprises a group of driving rollers, a group of driven rollers, and a plurality of groups of guide rollers, wherein an annular strip and a plurality of groups of guide rollers are arranged between the driving rollers and the driven rollers, and the distance between rollers of the driving rollers and the driven rollers is adjustable; the roller forming principle is based on gradual change of the shape of the roller, machining from rough shape to fine forming can be completed on single rolling equipment, the requirements for different tools and equipment are reduced, the production process is simplified, the production cycle is shortened, the production cost is reduced, and the production efficiency is improved. And meanwhile, the continuity and the smoothness of the whole rolling process are improved through rotation and translation movement of the guide rollers, the shutdown time and the adjustment time required by position adjustment are shortened, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing ring processing, in particular to a rolling device for a multi-fold elastic metal sealing ring. Background Art

[0002] In the field of elastic metal sealing ring processing and forming, there are two traditional forming processes, one is hydraulic forming technology, and the other is multi-pass rolling technology. Among them, the hydraulic forming technology has low processing efficiency, and the rolling device involved in the traditional multi-pass rolling process requires multiple replacement of rollers, resulting in increased labor costs and low processing efficiency. At the same time, due to multiple replacement of rollers, the possibility of errors in processing is greatly increased, which reduces the yield and further increases costs. Therefore, the structure of the multi-pass rolling device needs to be further improved. Utility Model Content

[0003] In response to the shortcomings of the above-mentioned prior art, the present application provides a rolling device for a multi-fold elastic metal sealing ring. The rolling forming principle of the utility model is based on gradually changing the shape of the roller, and can complete multiple steps from rough shape to fine forming on a single rolling device, reducing the need for different tools and equipment. This not only simplifies the production process, but also reduces the production cycle and cost. At the same time, the rotation and translation movement of the guide roller not only improves the continuity and smoothness of the entire rolling process, but also reduces the downtime and adjustment time required for position adjustment, thereby significantly improving production efficiency.

[0004] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0005] A rolling device for a multi-pleated elastic metal sealing ring includes a group of driving rollers and a group of driven rollers arranged opposite to each other, an annular gap for placing strip materials is formed between the driving rollers and the driven rollers, and multiple groups of guide rollers are evenly spaced along the annular gap. The driving rollers and the driven rollers gradually pressurize and form the strip blank through the outer contours of their rollers, and the roller spacing between the driving rollers and the driven rollers is adjustable.

[0006] Furthermore, the driving roller includes a driving roller shaft and a driving roller wheel rotating around the driving roller shaft, and the driving roller wheel has three convex molds with adjustable spacing along its wheel surface.

[0007] Furthermore, the driven roller includes a driven roller shaft and a driven roller wheel rotating around the driven roller shaft. The driven roller wheel has four groups of rims with adjustable spacing axially spaced along its wheel surface, and concave molds are formed between adjacent rims.

[0008] Furthermore, the two outermost wheel rims have the same diameter, the two inner wheel rims have the same diameter, and the outer wheel rim diameter is larger than the inner wheel rim diameter.

[0009] Furthermore, eight guide rollers are provided, with two in each group uniformly distributed on the annular gap where the strip is installed. The guide rollers include a guide roller shaft and a guide roller wheel rotating around the guide roller shaft.

[0010] The beneficial effects of the present invention compared to the prior art are as follows:

[0011] 1) Controlling Shape Accuracy: The guide rollers precisely guide the ring-shaped blank along a set trajectory through their rotation and translation. This precise control ensures the blank's accurate positioning between the active and passive rollers, effectively avoiding machining errors and unnecessary material waste. By designing the rollers as separate parts, with each part gradually transitioning to its final form, the shape and dimensions of the sealing ring can be more precisely controlled. This progressive shape adjustment allows the desired final geometry to be gradually approached throughout the rolling process, minimizing stress concentration and material elastic rebound during the forming process, thereby improving product precision and consistency.

[0012] 2) Uniform Stress Distribution: As the number of rolling passes increases, the gradual integration and shape adjustment of the rollers ensures uniform application of pressure and shape change, reducing the risk of cracking and deformation during the forming process. This uniform deformation process maximizes material utilization and reduces scrap. The rotation of the guide rollers is crucial for evenly distributing stress on the blank surface during rolling, helping to prevent cracking or deformation during processing. Uniform stress distribution effectively improves the mechanical properties and durability of the finished product, ensuring long-term product stability and reliability.

[0013] 3) Reduce the rebound effect: Springback during the metal forming process is one of the common problems that cause dimensional inaccuracy. The rotation of the guide roller effectively reduces the rebound effect of the finished product by controlling the elastic recovery of the blank after forming, ensuring the accuracy and consistency of the finished product size.

[0014] 4) Improved mechanical properties and durability: The gradual forming process helps to better control the microstructure of the finished product, such as grain size and distribution, thereby affecting the mechanical properties of the final product; the rolling device can improve the pressure resistance and corrosion resistance of the sealing ring and increase the service life of the product.

[0015] 5) Improved Processing Efficiency: By gradually changing the roller shape, multiple steps from rough shaping to fine forming can be completed on a single rolling device, reducing the need for separate tools and equipment. This not only simplifies the production process but also reduces production cycle time and costs. The rotation and translation of the guide roller not only improves the continuity and smoothness of the entire rolling process, but also reduces downtime and adjustment time required for position adjustments, significantly improving production efficiency. This efficiency improvement is particularly important in high-volume production, significantly reducing costs and increasing production line output. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the annular strip in the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the driving roller in the utility model;

[0019] Figure 4 This is a schematic structural diagram of the driven roller in the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the driven roller after the spacing is adjusted in the present invention;

[0021] Figure 6 This is a schematic diagram of the drive roller structure after the spacing is adjusted in the present invention.

[0022] Wherein: 10, annular strip; 1201, first outer wall; 1202, second outer wall; 1203, third outer wall; 1204, first inner wall surface; 1205, second inner wall surface; 1206, third inner wall surface;

[0023] 20, driving roller; 201, driving roller wheel; 202, driving roller shaft; 1402, first punch; 1403, second punch; 1404, third punch;

[0024] 30, driven roller; 301, driven roller wheel; 302, driven roller shaft; 1302, first flange; 1303, second flange; 1304, third flange; 1305, fourth flange;

[0025] 40. First guide roller; 401. First guide roller wheel; 402. First guide roller shaft;

[0026] 50, second guide roller; 501, second guide roller wheel; 502, second guide roller shaft;

[0027] 60. Third guide roller; 601. Third guide roller wheel; 602. Third guide roller shaft;

[0028] 70. Fourth guide roller; 701. Fourth guide roller wheel; 702. Fourth guide roller shaft;

[0029] 80. Fifth guide roller; 801. Fifth guide roller wheel; 802. Fifth guide roller shaft;

[0030] 90, sixth guide roller; 901, sixth guide roller; 902, sixth guide roller shaft;

[0031] 100, seventh guide roller; 1001, seventh guide roller wheel; 1002, seventh guide roller shaft;

[0032] 110. Eighth guide roller; 1101. Eighth guide roller wheel; 1102. Eighth guide roller shaft. DETAILED DESCRIPTION

[0033] The technical solution of the present utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The utility model provides a rolling device for a multi-fold elastic metal sealing ring, aiming to solve the problem that the multi-pass rolling device in the prior art requires frequent replacement of rollers, resulting in a high possibility of errors in processing and a low yield.

[0035] like Figures 1 to 6 As shown, the utility model includes a group of driving rollers 20 and a group of driven rollers 30 arranged opposite to each other, an annular gap for placing the strip is formed between the driving rollers 20 and the driven rollers 30, and a plurality of groups of guide rollers are evenly spaced along the annular gap. The driving rollers 20 and the driven rollers 30 gradually pressurize and form the strip blank through the outer contour shape of their rollers, and the roller spacing between the driving rollers 20 and the driven rollers 30 is adjustable.

[0036] In one embodiment of the present invention, the driving roller 20 includes a driving roller shaft 202 and a driving roller wheel 201 rotating around the driving roller shaft 202 , and the driving roller wheel 201 has three convex molds with adjustable spacing along its wheel surface.

[0037] In one embodiment of the present invention, the driven roller 30 includes a driven roller shaft 302 and a driven roller wheel 301 rotating around the driven roller shaft 302. The driven roller wheel 301 has four sets of rims with adjustable spacing axially spaced along its wheel surface, and a concave mold is formed between adjacent rims.

[0038] In one embodiment of the present invention, the two outermost wheel rims have the same diameter, the two inner wheel rims have the same diameter, and the outer wheel rim diameter is larger than the inner wheel rim diameter.

[0039] In one embodiment of the present invention, eight guide rollers are provided, including a first guide roller 40, a second guide roller 50, a third guide roller 60, a fourth guide roller 70, a fifth guide roller 80, a sixth guide roller 90, a seventh guide roller 100 and an eighth guide roller 110, in sequence, with each two being a group and evenly spaced on the annular gap where the strip is installed, and each guide roller includes a guide roller shaft and a guide roller wheel rotating around the guide roller shaft.

[0040] The specific structure and working principle of this utility model:

[0041] Structurally, the present invention mainly comprises a set of driving rollers 20, a set of driven rollers 30 and eight guide rollers; wherein, the driving roller 20 is designed to include a driving roller wheel 201 and a driving roller shaft 202. During the processing, the driving roller shaft 202 of the driving roller 20 remains fixed, while the driving roller wheel 201 rotates. The wheel surface of the driving roller wheel 201 is composed of three independent parts, namely Figure 3 As shown, it includes three sets of punches, namely the first punch 1402, the second punch 1403 and the third punch 1404, which are specially used to squeeze the annular blank and cause it to rotate. Figure 3 It can be seen that the roller of the driving roller 20 rotates with the annular blank under the action of friction, thereby squeezing the annular blank; as shown in the figure, the first punch 1402, the second punch 1403 and the third punch 1404 of the driving roller 20 correspond to the three inner wall surfaces of the sealing ring: the first inner wall surface 1204, the second inner wall surface 1205 and the third inner wall surface 1206.

[0042] The driven roller 30 can not only rotate, but also feed along the radial direction of the blank, move along the roller axis, and rotate around the center of the blank. This multi-directional movement enables the driven roller 30 to effectively press the annular blank into a desired shape with the assistance of the driving roller 20. The various parts of the driven roller 30 are Figure 4 The first flange 1302 , the second flange 1303 , the third flange 1304 and the fourth flange 1305 , and the cavities between the flanges correspond to the outer wall parts of the annular blank: the first outer wall 1201 , the second outer wall 1202 and the third outer wall 1203 , and correspond to the punch of the driving roller 20 .

[0043] It should be noted that the cooperation between the driving roller 20 and the driven roller 30 is Figure 4 It can be seen that the roller of the driven roller 30 is a concave mold, which cooperates with the convex mold of the driving roller 20 to press the annular blank into the cavity formed between the two rollers. This design ensures that the outer wall part of the annular blank is precisely formed to correspond to the various parts of the driven roller 30.

[0044] For the distance adjustment between rollers: Figure 3 and Figure 4 As shown in the figure, the horizontal distance (L3, L1, L2) between the driving roller 20 and the driven roller 30 will gradually decrease with the increase of the rolling pass, until it finally disappears, forming Figure 5 and Figure 6 The state of this gradually decreasing distance adjustment is crucial for accurately controlling the size and shape of the product. Specifically, the horizontal distance L3 between the convex dies of the driving roller 20 gradually decreases with the increase of the rolling pass, and finally becomes 0, becoming Figure 5 The horizontal distances L1 and L2 between the driven roller 30 and the die are gradually reduced with the increase of the rolling passes, and there is a one-to-one correspondence with the decrease of L3. Finally, L1 and L2 also become 0, that is, Figure 6 status.

[0045] like Figure 1 As shown, each guide roller includes a first guide roller 40 and a first guide roller 401, a first guide roller shaft 402; a second guide roller 50 and a second guide roller 501, a second guide roller shaft 502; a third guide roller 60 and a third guide roller 601, a third guide roller shaft 602; a fourth guide roller 70 and a fourth guide roller 701, a fourth guide roller shaft 702; a fifth guide roller 80 and a fifth guide roller 801, a fifth guide roller shaft 802; a sixth guide roller 90 and a sixth guide roller 901, a sixth guide roller shaft 902; a seventh guide roller 100 and a seventh guide roller 1001, a seventh guide roller shaft 1002; and an eighth guide roller 110 and an eighth guide roller 1101, a eighth guide roller shaft 1102.

[0046] Function of the guide roller: The guide roller not only assists the feeding action of the driven roller 30 through its translation and rotation movement, but also positions the blank to prevent it from shifting or falling off the roller during processing. These movements of the guide roller also help guide the deformation of the blank and enhance the shaping effect of the driven roller 30 on the blank.

[0047] The unified and specialized design of the guide rollers, whose roller shape is the same as the driving roller 20 and similar to the driven roller 30, ensures the coordination and efficiency of the entire rolling system.

[0048] The guide roller performs a compound motion. Under the friction of the blank, the guide roller can rotate axially, feed radially along the blank, and rotate circumferentially around the blank at the same time. These compound motions enable the guide roller to play a key role in positioning and forming during the processing.

[0049] Before use: First, inspect and prepare the equipment, thoroughly check each component of the roller press, ensure that all rollers (including driving roller 20, driven roller 30 and guide roller) and roller shafts are in good condition, and confirm that all moving parts are lubricated and clean.

[0050] Roller alignment: Precisely align the drive roller 20, driven roller 30, and guide roller to ensure that they can apply pressure evenly and accurately during the rolling process.

[0051] Blank placement and initial positioning, blank placement: Place the annular strip 10 blank into the rolling machine manually or using a mechanical device, and place it between the driving roller 20 and the driven roller 30.

[0052] Initial positioning: The guide rollers are activated and their translation and rotational movement is used to initially position the blank, ensuring that it is evenly spread and not twisted.

[0053] Initial roll forming, start rolling: activate the roller of the driving roller 20, start rotating and apply the initial shape to the blank through the punch of the driving roller 20.

[0054] Monitor pressure and speed: Adjust rolling speed and applied pressure to suit the physical properties of the blank and the required forming accuracy.

[0055] Multi-pass precision rolling adjustment, pass-by-pass: After each rolling pass, the horizontal distance between the rollers, as well as the roller feed speed and pressure, are adjusted according to the forming effect. Fine adjustments are made through the control system to gradually approach the final product shape and size.

[0056] Repeat rolling: The rolling process is repeated, each time slightly adjusting the position and movement of the rollers, until the gap between the rollers is reduced to zero, forming a complete sealing ring shape.

[0057] Final rolling and finished product inspection, final shape forming: During the last rolling, special attention is paid to checking and adjusting the pressure distribution of the rollers to ensure that the shape and size of the sealing ring are accurate and free of defects.

[0058] Finished product inspection: After the finished product is removed from the rolling machine, it is visually and dimensionally inspected to confirm that it meets the technical specifications and quality requirements. Necessary post-processing steps are performed, such as deburring and surface treatment.

[0059] Post-processing and quality control: Finally, cleaning and surface treatment are carried out to clean the finished product, remove oil stains and metal chips that may be generated during the rolling process, and perform surface coating or other treatments as needed to improve corrosion resistance and wear resistance.

[0060] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.

Claims

1. A rolling device for a multi-fold elastic metal sealing ring, characterized in that: The invention comprises a group of driving rollers (20) and a group of driven rollers (30) arranged opposite to each other, wherein an annular gap for placing an annular strip (10) is formed between the driving rollers (20) and the driven rollers (30), and a plurality of groups of guide rollers are evenly spaced along the annular gap. The driving rollers (20) and the driven rollers (30) gradually pressurize and form the strip blank through the outer profile of their rollers, and the roller spacing between the driving rollers (20) and the driven rollers (30) is adjustable.

2. The rolling device for a multi-fold elastic metal sealing ring according to claim 1, characterized in that: The driving roller (20) comprises a driving roller shaft (202) and a driving roller wheel (201) rotating around the driving roller shaft (202); the driving roller wheel (201) has three convex molds with adjustable spacing along its wheel surface.

3. The rolling device for a multi-fold elastic metal sealing ring according to claim 1, characterized in that: The driven roller (30) comprises a driven roller shaft (302) and a driven roller wheel (301) rotating around the driven roller shaft (302). The driven roller wheel (301) has four groups of rims with adjustable spacing axially spaced along its wheel surface, and concave molds are formed between adjacent rims.

4. The rolling device for a multi-fold elastic metal sealing ring according to claim 3, characterized in that: The two outermost wheel rims have the same diameter, the two inner wheel rims have the same diameter, and the outer wheel rim diameter is larger than the inner wheel rim diameter.

5. The rolling device for a multi-fold elastic metal sealing ring according to claim 1, characterized in that: The guide rollers are provided in eight groups, with two of each group uniformly spaced on the annular gap for installing the annular strip (10). Each group of guide rollers includes a guide roller shaft and a guide roller wheel rotating around the guide roller shaft.

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