Main roller quick-changing device for ring rolling machine

Abstract

According to the main roller quick-changing device for the ring rolling machine, spare parts of a main roller die quick-changing tool are quickly replaced through the main roller quick-changing mechanism, the problems that a main roller is difficult to replace, the replacing time of the main roller on a production line is shortened, the labor intensity of the main roller on the production line is reduced are solved, the downtime of a machine tool is shortened, and the production efficiency is greatly improved. According to the technical scheme, the device comprises a rack assembly, a main roller mold quick-changing tool, a main roller quick-detaching mechanism and a main roller tensioning mechanism. The main roller die quick-change tool is mounted on the rack and comprises an upper main roller shaft seat, an upper main roller shaft is mounted on the upper main roller shaft seat, and a trapezoidal sliding block is further arranged on the upper main roller shaft seat; the tensioning oil cylinder and the tensioning wedge block are arranged on the opposite sides of the machine frame respectively. One end of the pull rod is provided with threads, the other end of the pull rod is fixedly connected with a piston of the tensioning oil cylinder, and the trapezoid sliding block of the main roller die quick-changing tool is fixedly installed on a machine frame through the tensioning oil cylinder.

Description

Technical Field

[0001] The utility model relates to the field of the structure of a ring rolling mill, in particular to a main roll quick replacement device for a ring rolling mill. Background Art

[0002] The statements in this part only provide background technical information related to the utility model and do not necessarily constitute prior art.

[0003] During the rolling process of the currently produced ring rolling mill, the main roll in the main roll part will be continuously worn, and the main roll needs to be replaced every once in a while. Especially for some ring rolling mills that need to roll ring parts with complex cross-sections, the main roll needs to be replaced frequently. However, the support seat and the main roll on the main roll are very heavy, which brings certain difficulties to production during replacement, with a long replacement time and low production efficiency.

[0004] Currently, the method for replacing the main roll of a ring rolling mill is mostly to disassemble the main roll on the production line. However, the installation structure of the main roll of the existing ring rolling mill is relatively complex, the disassembly steps are cumbersome, and all the connecting parts need to be manually disassembled. Only after lifting away the upper support seat block can the lower main roll die be disassembled, resulting in a long downtime of the ring rolling mill and affecting production efficiency. There is no structure for quick overall disassembly. In view of the above problems, there is an urgent need for an efficient main roll quick replacement mechanism. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a main roll quick replacement device for a ring rolling mill. By using a main roll quick replacement mechanism to quickly replace the spare parts of the main roll die quick replacement tooling, the problems of difficult main roll replacement, long replacement time and labor intensity of the main roll on the production line are solved by replacing the overall components, the downtime of the machine tool is reduced, and the production efficiency is greatly improved.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A main roll quick replacement device for a ring rolling mill includes a frame, a main roll die quick replacement tooling, a main roll quick disassembly mechanism and a main roll tensioning mechanism;

[0008] A fixed wedge block is arranged on one side of the frame; the frame is also provided with a through hole, and the direction of the through hole is perpendicular to the plane where the fixed wedge block is located;

[0009] The main roll die quick replacement tooling includes an upper main roll shaft seat and an upper main roll shaft. The upper main roll shaft is installed on the upper main roll shaft seat. A trapezoidal slide block for connecting with the frame is arranged on the upper main roll shaft seat; the trapezoidal slide block is installed on the frame on the same side as the fixed wedge block;

[0010] The main roll tensioning mechanism includes a tensioning oil cylinder, a pull rod, and a tensioning wedge block; the tensioning wedge block and the fixed wedge block form a dovetail groove structure, the trapezoidal slider can slide in the dovetail groove, and the tensioning wedge block can move under the action of the tensioning oil cylinder; one end of the pull rod is provided with a thread and a third nut is installed, and the other end of the pull rod is fixedly connected to the piston of the tensioning oil cylinder; the tensioning oil cylinder is arranged on the other side of the frame, each tensioning wedge block is provided with a through hole, the position of the through hole corresponds to that of the through hole, the pull rod can reciprocate in the through hole and the through hole, and the trapezoidal slider is pressed and fixed on the frame through the tensioning wedge block under the action of the tensioning oil cylinder;

[0011] The frame is also fixedly installed with a lower main roll shaft seat, a lower main roll shaft is installed on the lower main roll shaft seat, the upper main roll shaft and the lower main roll shaft are coaxially arranged, and the main roll quick-release mechanism is installed on the lower main roll shaft seat.

[0012] Further, a positioning block is arranged at the top of the trapezoidal slider, an internal thread sleeve is arranged on the positioning block, and a bolt is arranged in the internal thread sleeve, and the bolt is used to adjust the height of the main roll die quick-change tooling.

[0013] Further, a second nut is also arranged on the bolt for fastening the bolt.

[0014] Further, the lower end cross-section of the upper main roll shaft is square, the top end of the lower main roll shaft is provided with a square groove, the groove is in fit connection with the lower end of the upper main roll shaft for the transmission between the upper main roll shaft and the lower main roll shaft, and the upper main roll shaft is installed with a main roll.

[0015] Further, an axial tensioning screw rod is fixedly arranged on the top of the frame, a first nut is arranged on the screw rod, two through holes are arranged on the positioning block for passing through the tensioning screw rod, and the first nut is arranged on the upper part of the positioning block.

[0016] Further, the frame is fixedly connected with the lower main roll shaft seat, and the lower main roll shaft seat is installed with a lower main roll shaft.

[0017] Further, a main roll quick-release mechanism is arranged on the lower main roll shaft seat, and the main roll quick-release mechanism is arranged on both sides of the lower main roll shaft.

[0018] Further, the main roll quick-release mechanism includes an ejecting oil cylinder, a guide sleeve, and an ejecting shaft. The ejecting oil cylinder is fixedly arranged on the lower main roll shaft seat, the guide sleeve is arranged on the upper part of the ejecting oil cylinder, and an ejecting shaft is arranged in the core part of the guide sleeve.

[0019] Further, a lifting ring screw is arranged on the top of the upper main roll shaft seat, and the lifting ring screw is used for hoisting the main roll die quick-change tooling.

[0020] Furthermore, the lower end of the lower main roller shaft is connected to the power system of the machine tool to provide power for the main roller.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0022] In the present utility model, the quick-change tooling for the main roller die is a detachable integral structure and has multiple sets of spare parts, enabling the overall disassembly of the main roller die and its installation components. At the same time, rapid disassembly is achieved through the main roller tensioning mechanism; when replacing the main roller die, only need to relax the tensioning oil cylinder to make the tensioning wedge block and the trapezoidal slider loose. After relaxation, the quick-change tooling for the main roller die can be withdrawn from above the machine frame; when installing the main roller die, insert the quick-change tooling for the main roller die into the trapezoidal slide rail formed between the two tensioning wedge blocks from above the machine frame, and only need to contract the tensioning oil cylinder to make the tensioning wedge block and the trapezoidal slider pressed tightly, realizing the fixation of the trapezoidal slider and the machine frame. The lower end cross-section of the upper main roller shaft is square, and the top end of the lower main roller shaft is provided with a square groove, and the groove is detachably connected with the lower end of the upper main roller shaft, thereby reducing the working intensity of replacing the main roller die, reducing the downtime of the machine tool when replacing the main roller die, and reducing the loss of production efficiency of the production line. Description of the Drawings

[0023] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0024] Figure 1 It is a schematic structural diagram of the present utility model

[0025] Figure 2 It is a structural sectional view of the main roller tensioning mechanism and the main roller quick-disassembly mechanism of the present utility model

[0026] Figure 3 It is a schematic structural diagram of the quick-change tooling for the main roller die of the present utility model

[0027] Figure 4 It is a partial view of the sectional view of the quick-change tooling for the main roller die of the present utility model

[0028] Figure 5 It is a partial view of the tensioning wedge block and the trapezoidal slider of the present utility model

[0029] In the figure: 1 is the frame; 1-1 is the through hole; 1-2 is the axial tensioning screw; 1-3 is the first nut; 1-4 is the lower main roller shaft seat; 1-5 is the lower main roller shaft; 1-6 is the fixed wedge; 2 is the main roller mold quick-change tooling; 2-1 is the upper main roller shaft seat; 2-2 is the upper main roller shaft; 2-3 is the eye screw; 2-4 is the bolt; 2-5 is the second nut; 2-6 is the internal threaded sleeve; 2-7 is the trapezoidal slider; 3 is the main roller quick-release mechanism; 3-1 is the ejection cylinder; 3-2 is the guide sleeve; 3-3 is the ejection shaft; 4 is the main roller tensioning mechanism; 4-1 is the tensioning cylinder; 4-2 is the pull rod; 4-3 is the third nut; 4-4 is the tensioning wedge. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] The utility model is described in detail below in conjunction with the accompanying drawings. The embodiment disclosed herein is a main roller quick-change device for a ring rolling machine. Figures 1-5 As shown, it includes a frame 1, a main roller mold quick-change tooling 2, a main roller quick-release mechanism 3 and a main roller tensioning mechanism 4. The main roller mold quick-change tooling 2 is installed on the frame 1. There are at least two sets of the main roller mold quick-change tooling 2, which are used for the quick-removal and installation of the main roller mold quick-change tooling 2 to reduce the downtime of the ring rolling machine. The frame 1 is equipped with a lower main roller shaft seat 1-4, and the lower main roller shaft seat 1-4 is equipped with a main roller quick-release mechanism 3. The main roller tensioning mechanism 4 is installed on the frame 1 and plays a role in tightening the main roller mold quick-release assembly during operation.

[0032] The main roller mold quick-change tooling 2 includes an upper main roller shaft seat 2-1, an upper main roller shaft 2-2, a lifting eye screw 2-3, a bolt 2-4, a second nut 2-5, and an internal threaded sleeve 2-6; the upper main roller shaft 2-2 is installed in the upper main roller shaft seat 2-1, and the upper main roller shaft 2-2 can rotate relative to the upper main roller shaft seat 2-1. A trapezoidal slider 2-7 is arranged on the upper main roller shaft seat 2-1, and the trapezoidal slide rail is made of thick steel plate, and its cross section is trapezoidal; a positioning block is arranged on the top of the trapezoidal slider 2-7, and an internal threaded sleeve 2-6 is arranged on the positioning block, and a Bolt 2-4, the relative height between the upper main roller shaft seat 2-1 and the frame 1 can be adjusted by rotating the bolt 2-4, and a second nut 2-5 is also provided on the bolt 2-4, and the positioning of the bolt 2-4 is achieved by tightening the second nut 5-5 against the positioning block to prevent the bolt 2-4 from rotating relative to the internal threaded sleeve 2-6 and causing the relative height between the upper main roller shaft seat 2-1 and the frame 1 to continue to change; the eye screw 2-3 is set on the top of the upper main roller shaft seat 2-1, which is used to hoist the main roller mold quick-change tooling 2 to reduce manpower input.

[0033] The main roller tensioning mechanism 4 is composed of a tensioning oil cylinder 4-1, a pull rod 4-2, a third nut 4-3, and a tensioning wedge block 4-4; the tensioning wedge block 4-4 is arranged on one side of the frame 1 where the quick-change tooling 2 for the main roller die is installed, and the tensioning wedge block 4-4 is arranged on one side of the trapezoidal slider 2-7. On the other side of the trapezoidal slider 2-7, there is a fixed wedge block 1-6. The fixed wedge block 1-6 and the tensioning wedge block 4-4 together form a dovetail groove structure, further enabling the trapezoidal slider 2-7 to slide within the dovetail groove. One end of the pull rod 4-2 is provided with a thread and is installed with a third nut 4-3, and the third nut 4-3 is used for limiting the tensioning wedge block 4-4. The other end of the pull rod 4-2 is fixedly connected to the piston of the tensioning oil cylinder 4-1; the tensioning oil cylinder 4-1 is fixed on the opposite side of the side of the frame 1 where the quick-change tooling 2 for the main roller die is installed. Four through holes are evenly arranged on the tensioning wedge block 4-4, and through holes 1-1 are provided on the frame 1 corresponding to the arrangement positions of the through holes. The pull rod 4-2 is sequentially passed through the through hole 1-1 and the through holes. One tensioning oil cylinder 4-1 and one pull rod 4-2 are arranged for each through hole. A total of four tensioning oil cylinders 4-1 and four pull rods 4-2 are arranged for the main roller tensioning mechanism 4. By pulling the pull rod 4-2 with the tensioning oil cylinder 4-1, the pull rod 4-2 drives the tensioning wedge block 4-4 under the limitation of the third nut 4-3 to firmly press the trapezoidal slider 2-7 on the frame 1. When replacing the main roller die, only need to relax the tensioning oil cylinder 4-1 to make the tensioning wedge block 4-4 and the trapezoidal slider 2-7 loose. After loosening, the quick-change tooling 2 for the main roller die can be withdrawn from above the frame 1; when installing the main roller die, insert the quick-change tooling 2 for the main roller die from above the frame 1 into the trapezoidal slide rail formed between the two tensioning wedge blocks 4-4, and only need to contract the tensioning oil cylinder 4-1 to make the tensioning wedge block 4-4 and the trapezoidal slider 2-7 press tightly, realizing the fixation of the upper main roller shaft seat 2-1 and the frame 1.

[0034] The upper main roller shaft 2-2 is installed with a main roller. The lower end cross-section of the upper main roller shaft 2-2 is square. On the lower main roller shaft seat 1-4, there is a lower main roller shaft 1-5. The top end of the lower main roller shaft 1-5 is provided with a square groove, and the groove is in fit connection with the lower end of the upper main roller shaft 2-2, further realizing the transmission between the upper main roller shaft 2-2 and the lower main roller shaft 1-5. The lower end of the lower main roller shaft 1-5 is connected to the power system to provide power for the rotation of the main roller.

[0035] At the top of the frame 1, an axially tensioning screw rod 1-2 is fixedly arranged. A first nut 1-3 is arranged on the tensioning screw rod 1-2. The axially tensioning screw rod 1-2 can pass through the positioning block. The first nut 1-3 is arranged on the upper part of the positioning block. After the relative height between the upper main roll shaft seat 2-1 and the frame 1, since the bolt 2-4 is not connected to the frame 1, in order to ensure that the upper main roll shaft seat 2-1 does not move upward, the main roll die quick-change tooling 2 is fastened from the upper part of the positioning block by the first nut 1-3 to ensure accurate positioning and reliable connection in the vertical direction. The frame 1 is fixedly connected to the lower main roll shaft seat 1-4. The lower main roll shaft seat 1-4 is equipped with a lower main roll shaft 1-5. A main roll quick-release mechanism 3 is arranged on the lower main roll shaft seat 1-4. The main roll quick-release mechanism 3 is arranged on both sides of the lower main roll shaft 1-5. The main roll quick-release mechanism 3 includes an ejecting oil cylinder 3-1, a guide sleeve 3-2, and an ejecting shaft 3-3. The ejecting oil cylinder 3-1 is fixedly arranged on the lower main roll shaft seat 1-4. The guide sleeve 3-2 is arranged on the upper part of the ejecting oil cylinder 3-1. The core of the guide sleeve 3-2 is provided with the ejecting shaft 3-3. The ejecting shaft 3-3 is pushed by the ejecting oil cylinder 3-1 of the main roll quick-release mechanism 3 to jack up the main roll die quick-change tooling 2 upward, so that the upper main roll shaft 2-2 is disengaged from the lower main roll shaft 1-5. The lower end of the lower main roll shaft 1-5 is connected to the power system of the machine tool to provide power for the main roll.

[0036] Working principle:

[0037] When the main roll die needs to be replaced, first use a lifting tool to lift the lifting ring screw 2-3 of the main roll die quick-change tooling 2, then remove the first nuts 1-3 on the upper parts of the two axially tensioning screw rods 1-2, and then loosen the tensioning oil cylinder 4-1 of the main roll tensioning mechanism 4 to disengage the tensioning wedge block 4-4 from the upper main roll shaft seat 2-1. Secondly, use the main roll quick-release mechanism 3 to jack up the main roll die quick-change tooling 2 upward to disengage the upper main roll shaft 2-2 from the lower main roll shaft 1-5. Finally, use the lifting tool to slowly lift the main roll die quick-change tooling 2 vertically upward and lift it off the equipment as a whole. At this time, the removal of the main roll die is completed. During the installation of the main roll die, after the removed main roll die quick-change tooling 2 is lifted to the designated position, the second set of main roll die quick-change tooling 2 is inserted into the dovetail groove formed between the tensioning wedge block 4-4 and the fixed wedge block 1-6 from above the frame. The shaft end of the upper main roll shaft 2-2 is matched with the square groove of the lower main roll shaft 1-5. Just contract the tensioning oil cylinder 4-1 to make the tensioning wedge block 4-4 press tightly against the trapezoidal slider 2-7. If the height of the main roll die quick-change tooling 2 needs to be adjusted, it can be adjusted by adjusting the bolt 2-4, and then the first nuts 1-3 of the two axially tensioning screw rods 1-2 are tightened.

[0038] Although the specific implementation manners of the present utility model have been described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present utility model. Those skilled in the art should understand that, based on the technical solution of the present utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present utility model.

Claims

1. A main roll quick-change device for a ring rolling machine, characterized in that, It includes a frame, a quick-change tooling for the main roll die, a quick-disassembly mechanism for the main roll, and a tensioning mechanism for the main roll; A fixed wedge block is provided on one side of the frame; the frame is also provided with a through hole, and the direction of the through hole is perpendicular to the plane where the fixed wedge block is located; The quick-change tooling for the main roll die includes an upper main roll shaft seat and an upper main roll shaft. The upper main roll shaft is installed on the upper main roll shaft seat, and a trapezoidal slider connected to the frame is provided on the upper main roll shaft seat; the trapezoidal slider is installed on the frame on the same side as the fixed wedge block; The tensioning mechanism for the main roll includes a tensioning oil cylinder, a pull rod, and a tensioning wedge block; the tensioning wedge block and the fixed wedge block form a dovetail groove structure, the trapezoidal slider can slide in the dovetail groove, and the tensioning wedge block can move under the action of the tensioning oil cylinder; one end of the pull rod is provided with a thread and a third nut is installed, and the other end of the pull rod is fixedly connected to the piston of the tensioning oil cylinder; the tensioning oil cylinder is arranged on the other side of the frame, and each tensioning wedge block is provided with a through hole, and the position of the through hole corresponds to that of the through hole, and the pull rod can reciprocate in the through hole and the through hole, and the trapezoidal slider is pressed and fixed on the frame by the tensioning wedge block under the action of the tensioning oil cylinder; The frame is also fixedly installed with a lower main roll shaft seat, and a lower main roll shaft is installed on the lower main roll shaft seat. The upper main roll shaft and the lower main roll shaft are coaxially arranged; The quick-disassembly mechanism for the main roll is installed on the lower main roll shaft seat.

2. The main roll quick-change device for a ring rolling mill according to claim 1, characterized in that A positioning block is provided at the top of the trapezoidal slider, an internal thread sleeve is provided on the positioning block, and a bolt is provided in the internal thread sleeve for adjusting the height of the quick-change tooling for the main roll die.

3. The main roll quick-change device for a ring rolling mill according to claim 2, characterized in that, A second nut is also provided on the bolt for fastening the bolt.

4. The main roll quick-change device for a ring rolling mill according to claim 1, characterized in that, The lower end cross-section of the upper main roll shaft is square, and a square groove is provided at the top end of the lower main roll shaft. The groove is in fit connection with the lower end of the upper main roll shaft for the transmission between the upper main roll shaft and the lower main roll shaft, and a main roll is installed on the upper main roll shaft.

5. The main roll quick-change device for a ring rolling mill according to claim 2, characterized in that, An axial tensioning screw rod is fixedly provided at the top of the frame. A first nut is provided on the screw rod. Two through holes are provided on the positioning block for passing through the tensioning screw rod, and the first nut is arranged above the positioning block.

6. The main roll quick-change device for a ring rolling mill according to claim 2, characterized in that, The frame is fixedly connected to the lower main roll shaft seat, and the lower main roll shaft seat is installed with a lower main roll shaft.

7. The main roll quick-change device for a ring rolling mill according to claim 6, characterized in that, A quick-disassembly mechanism for the main roll is provided on the lower main roll shaft seat, and the quick-disassembly mechanism for the main roll is arranged on both sides of the lower main roll shaft.

8. A main roll quick-change device for a ring rolling mill according to claim 1, characterized in that, The quick-disassembly mechanism for the main roll includes a jacking oil cylinder, a guide sleeve, and a jacking shaft. The jacking oil cylinder is fixedly provided on the lower main roll shaft seat, the guide sleeve is arranged above the jacking oil cylinder, and a jacking shaft is provided in the core of the guide sleeve.

9. The main roll quick-change device for a ring rolling mill according to claim 2, characterized in that, A lifting ring screw is provided at the top of the upper main roll shaft seat for hoisting the quick-change tooling for the main roll die.

10. The main roll quick-change device for a ring rolling mill according to claim 6, characterized in that, The lower end of the lower main roll shaft is connected to the power system of the machine tool to provide power for the main roll.

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