Device for adjusting axial gap between eccentric bushing and box body of roller box
By introducing a hydraulic device into the roller box eccentric sleeve and box body gap adjustment device, the problem of the roller box axial gap easily becoming large was solved, the wire rod dimensional accuracy was improved, and the quality requirements of high-end products were met.
Patent Information
- Application Number
- CN202422683996.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In the existing roller box process, the axial clearance is prone to increase, which leads to problems such as misalignment of the roller ring and roller groove and misalignment of rollers, affecting the dimensional accuracy of the wire, especially when rolling small-sized products, and making it difficult to meet the dimensional accuracy requirements of high-end products.
A device for adjusting the axial clearance between the eccentric sleeve and the box body of a roller box is designed. By adding a hydraulic device between the eccentric sleeve and the bottom plate of the box body, the assembly gap is eliminated by hydraulic pressure, and the device is dynamically adjusted under wear conditions to ensure the stability of the axial clearance of the roller box.
It effectively eliminates the problem of increased axial clearance during the use of the roller box, improves the dimensional accuracy of the wire, and especially ensures that the ellipticity of the finished wire meets the requirements during the rolling process of high-end products.
Smart Images
Figure CN223465315U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of roll box structure, concretely to a roll box eccentric sleeve and box body axial gap adjusting device. BACKGROUND
[0002] In the wire rod rolling process, generally adopts the elliptical - circular - circular rolling process hole type, for example, the double module rolling mill of Daniele company, to ensure the requirements of high speed, high yield, high precision rolling, the overall structure design is 4 passes two modules, 2 passes per module, the former module is heavy module for heavy load rolling, and the roll box is 0H heavy roll box, and the latter module is light module, and 150L roll box is adopted.
[0003] Daniele type 150L roll box is the finished product frame roll box of Daniele wire double module rolling mill, and the roll ring hole type is circular, and it mainly rounds the surface of the wire rod, and the axial gap and the radial gap of the roll ring hole type play a crucial role in the size precision of the finished product, especially the axial gap has many influencing factors and is difficult to control, and it is a common problem for all Daniele rolling mill roll box designs, and the imported original roll box also has this problem after a short period of use.
[0004] After the axial gap becomes larger, two pairs of roll shafts are prone to problems such as roll ring groove misalignment and roll error during high-speed rotation, which further leads to the ovality of the finished wire rod being out of tolerance, especially when rolling small specifications such as φ5.5 and φ5.0 products.
[0005] With the continuous development of high-end products by downstream users, the size precision quality requirements of the coil rod are increasingly strict, especially for high-end bead cord, the size precision of the coil rod is required to reach C-grade precision, therefore, how to control the axial gap of the roll box and improve the size precision of the wire rod has become an urgent problem to be solved.
[0006] Therefore, the utility model provides a roll box eccentric sleeve and box body axial gap adjusting device to solve the above problems. UTILITY MODEL CONTENTS
[0007] The utility model aims at providing a roll box eccentric sleeve and box body axial gap adjusting device to solve the problems in the background art.
[0008] To achieve the above object, the utility model provides the following technical scheme: a roll box eccentric sleeve and box body axial gap adjusting device, the roll box eccentric sleeve and box body axial gap adjusting device includes: a box body, a box bottom plate is arranged at the bottom of the box body, a first rotary rolling shaft and a second rotary rolling shaft are arranged in the box body, an oil inlet is formed in the surface of the box body, and a piston is arranged in the box bottom plate.
[0009] The first rotary rolling roller shaft comprises a roller shaft body, and a first eccentric sleeve is sleeved on the surface of the roller shaft body, and the first eccentric sleeve is in contact with the bottom of the box bottom plate.
[0010] Preferably, the first rotary rolling roller shaft and the second rotary rolling roller shaft are symmetrical in structure and are symmetrically distributed about the central axis of the box body.
[0011] Preferably, the box body is through at both ends, and the first rotary rolling roller shaft and the second rotary rolling roller shaft penetrate the box bottom plate.
[0012] Preferably, the box body is internally provided with an oil supply channel, and the oil supply channel is connected with the oil supply port and the piston.
[0013] Preferably, the second rotary rolling roller shaft also comprises another roller shaft body, and a second eccentric sleeve is sleeved on the surface of the roller shaft body, and the second eccentric sleeve is in contact with the bottom of the box bottom plate.
[0014] Preferably, the piston is located at the bottom of the box bottom plate, and the piston is abutted against the eccentric sleeve.
[0015] Preferably, the end surface of the roller shaft body is provided with a protective cap, the protective cap is connected with the roller shaft body through locking bolts, a taper sleeve is arranged between the protective cap and the roller shaft body, a roller ring is fixed at the end of the protective cap, the roller ring is located between the protective cap and the box body, and a sealing plate is arranged between the roller ring and the box body.
[0016] Compared with the prior art, the device has the following beneficial effects:
[0017] The roller box eccentric sleeve and the box axial gap adjusting device add an axial hydraulic device between the eccentric sleeve and the box bottom plate, can eliminate the gap between the roller box body and the eccentric sleeve under the condition that the parts are new, can dynamically eliminate the wear gap of the locking device under the condition that the roller box is used for a period of time and appears a certain wear condition, and meets the use requirement, solves the problem that the axial gap is easy to become large during the use of the roller box, and greatly improves the wire rod size precision. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the utility model;
[0019] Figure 2 It is a structural sectional view of the utility model;
[0020] Figure 3 It is Figure 2 It is an enlarged view of the structure at A;
[0021] Figure 4 It is Figure 2 It is an enlarged view of the structure at B.
[0022] In the figure: 1, sealing plate; 2, protective cap; 3, locking bolt; 4, first rotary rolling shaft; 5, second rotary rolling shaft; 6, roller ring; 7, box bottom plate; 8, second eccentric sleeve; 9, first eccentric sleeve; 10, oil supply port; 11, box body; 12, roller shaft body; 13, taper sleeve; 14, piston; 15, oil supply channel. DETAILED DESCRIPTION
[0023] For the purpose of simplicity and illustration, the principles of the embodiments are primarily described by way of reference example. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one ordinarily skilled in the art that the embodiments can be practiced without the specific details and that numerous implementation choices may be made. In some instances, well-known methods and structures have not been described in detail in order to avoid unnecessarily obscuring the embodiments. Also, all embodiments can be used in combination with each other.
[0024] Embodiment one: please refer to Figures 1 to 4 The utility model provides a technical scheme: a kind of roller box eccentric sleeve and box axial gap adjusting device, the roller box eccentric sleeve and box axial gap adjusting device include: box body 11, the bottom of box body 11 is provided with box bottom plate 7, first rotary rolling shaft 4 and second rotary rolling shaft 5 are provided in box body 11, oil supply port 10 is set in the surface of box body 11, piston 14 is equipped in box bottom plate 7;
[0025] First rotary rolling shaft 4, first rotary rolling shaft 4 includes roller shaft body 12, first eccentric sleeve 9 is sleeved on the surface of roller shaft body 12, first eccentric sleeve 9 and the bottom of box bottom plate 7 contact;
[0026] When using, the piston 14 is provided with the stefen, as shown in Figure 2 、 4 The hole is drilled in the position close to eccentric sleeve of box bottom plate 7, and the hydraulic piston 14 is installed in cooperation with stefen, the oil supply port 10 is set on the surface of new roller box box body 11, and the oil supply channel 15 is additionally arranged in the inside of box body 11 and box bottom plate 7, the external hydraulic pipeline is connected to the box body 11, and acts on the piston 14, so that the box body 11 and eccentric sleeve always have a pre-tightening force to eliminate the assembly gap between eccentric sleeve and box body 11.
[0027] Embodiment two: on the basis of embodiment one, the end surface of roller shaft body 12 is provided with protective cap 2, protective cap 2 is connected with roller shaft body 12 by locking bolt 3, taper sleeve 13 is arranged between protective cap 2 and roller shaft body 12, roller ring 6 is fixed at the end of protective cap 2, roller ring 6 is located between protective cap 2 and box body 11, and sealing plate 1 is arranged between roller ring 6 and box body 11.
[0028] When in use, the cone sleeve 13 pressing device includes a protective cap 2, a cone sleeve 13, a roller ring 6 and a locking bolt 3. Compared with the original structural design, it is simpler and the number of accessories is greatly reduced. Only the protective cap 2 and the cone sleeve 13 are needed to achieve fixation, and the thickness of the cone sleeve 13 is increased: the original cone sleeve 13 is made of copper and has a thin wall thickness, with an opening of only 2.9mm. The wall thickness of the new design cone sleeve 13 is increased to about 4mm, the cone ratio remains unchanged, the outer diameter remains unchanged, and the material is replaced with stainless steel, which is more durable and has higher strength, and improves the ability to control the size accuracy of the finished wire. Figure 3 The locking bolt 3 passes through the protective cap 2 and is connected to the roller body 12.
[0029] Example 3: Based on Example 2, the first spinning roller 4 and the second spinning roller 5 have the same structure and are symmetrically distributed about the central axis of the box body 11. The second spinning roller 5 also includes another roller body 12. The surface of the roller body 12 is covered with a second eccentric sleeve 8. The second eccentric sleeve 8 contacts the bottom of the box bottom plate 7. The piston 14 is located at the bottom of the box bottom plate 7 and can be tightly abutted against the eccentric sleeve.
[0030] During use, the first spinning roller shaft 4 and the second spinning roller shaft 5 are rotatably arranged in the box body to ensure that the first spinning roller shaft 4 and the second spinning roller shaft 5 rotate normally. Similarly, a piston 14 is also arranged in the box body bottom plate 7 at the second eccentric sleeve 8.
[0031] Working principle: In actual use, the comprehensive axial clearance of the 150L roller box is mainly composed of the clearance of the thrust bearing and the clearance between the eccentric sleeve and the eccentric adjustment device and the support device. The clearance of the thrust bearing is the standard value, which is 0.01-0.03mm after assembly. Under the condition of high processing precision, the clearance between the eccentric sleeve and the eccentric adjustment device and the support device is 0.05-0.08mm. After a period of frequent wear and tear, the clearance is generally more than 0.2mm, causing problems such as misalignment and misalignment of the roller grooves of the roller ring 6, which in turn leads to excessive ovality of the finished wire. Therefore, if Figure 2 、 4 As shown, a hole is drilled near the eccentric sleeve on the box bottom plate 7, and a hydraulic piston 14 is installed in conjunction with the step seal. An oil supply port 10 is opened on the surface of the new roller box body 11, and a new oil supply channel 15 is added inside the box body 11 and the box bottom plate 7. The oil supply channel 15 is connected to the box body 11 by an external hydraulic pipeline, which acts on the piston 14, so that the box body 11 and the eccentric sleeve always have a pre-tightening force to eliminate the assembly gap between the eccentric sleeve and the box body 11.
[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for adjusting the axial gap between an eccentric sleeve of a roller box and a box body, characterized in that: The eccentric sleeve of the roller box and the box body axial gap adjusting device comprises a box body (11), the bottom of the box body (11) is provided with a box bottom plate (7), the first rotary rolling shaft (4) and the second rotary rolling shaft (5) are arranged in the box body (11), an oil inlet (10) is arranged on the surface of the box body (11), and a piston (14) is arranged in the box bottom plate (7). The first rotary rolling shaft (4) comprises a shaft body (12), the surface of the shaft body (12) is sleeved with a first eccentric sleeve (9), and the first eccentric sleeve (9) is in contact with the bottom of the box bottom plate (7).
2. The eccentric sleeve and housing axial gap adjustment device of claim 1, wherein: The first rotary rolling shaft (4) and the second rotary rolling shaft (5) are symmetrical about the central axis of the box body (11).
3. The eccentric sleeve and housing axial gap adjustment device of claim 2, wherein: The box body (11) is through at both ends, and the first rotary rolling shaft (4) and the second rotary rolling shaft (5) penetrate the box bottom plate (7).
4. The eccentric sleeve and housing axial gap adjustment device of claim 3, wherein: The box body (11) is provided with an oil supply channel (15) inside, and the oil supply channel (15) is connected with the oil inlet (10) and the piston (14).
5. The eccentric sleeve and housing axial gap adjustment device of claim 4, wherein: The second rotary rolling shaft (5) also comprises another shaft body (12), the surface of the shaft body (12) is sleeved with a second eccentric sleeve (8), and the second eccentric sleeve (8) is in contact with the bottom of the box bottom plate (7).
6. The eccentric sleeve and housing axial gap adjustment device of claim 5, wherein: The piston (14) is located at the bottom of the box bottom plate (7), and the piston (14) is in abutting contact with the eccentric sleeve.
7. The eccentric sleeve and housing axial gap adjustment device of claim 6, wherein: The end surface of the shaft body (12) is provided with a protective cap (2), the protective cap (2) is connected with the shaft body (12) through locking bolts (3), a taper sleeve (13) is arranged between the protective cap (2) and the shaft body (12), the end of the protective cap (2) is fixedly provided with a roller ring (6), the roller ring (6) is located between the protective cap (2) and the box body (11), and a sealing plate (1) is arranged between the roller ring (6) and the box body (11).