Coaxial Difference Adjustment Double-Flow Molding Machine

Abstract

This solution relates to a coaxial differential adjustment double-stream forming machine in the field of intelligent manufacturing of metallurgical machinery, including a frame, a forming unit and a transmission shaft. The transmission shaft includes an upper transmission shaft and a lower transmission shaft that are parallelly installed on the frame. A forming unit is installed on the frame. The forming unit includes an upper roll assembly, a lower roll assembly and a vertical roll assembly. The upper roll assembly is installed on the upper transmission shaft, the lower roll assembly is installed on the lower transmission shaft, and the two vertical roll assemblies are installed on two vertical short shafts. The two vertical roll assemblies are located on both sides of the upper roll assembly and the lower roll assembly. The upper roll assembly, the lower roll assembly and the two vertical roll assemblies form a forming channel. A first power mechanism for vertically adjusting the upper roll assembly and the lower roll assembly and a second power mechanism for horizontally adjusting the two vertical roll assemblies are installed on the frame, which can well realize the forming of various hot-bent formed steel materials and can quickly adjust the distance between the roll assemblies.

Description

Technical Field

[0001] The present invention belongs to the technical field of hot rolling forming manufacturing of metallurgical machinery, and particularly relates to a coaxial difference adjustment double-flow forming machine. Background Art

[0002] At present, in the cold forming single-flow production process of structural steel, the position of the forming rolls needs to be adjusted under pressure. Since it is a cold forming single-flow process, its equipment is relatively simple. Generally, the adjustment of the forming rolls is carried out manually or mechanically offline. In this way, the quality of the adjustment cannot meet the requirements, and the accuracy is low, and the production efficiency and benefit are low.

[0003] Now a new process is adopted, which is a hot state steel plate forming process, that is, a process of directly bending and cutting a high-temperature steel plate. Especially for hot rolled plates with a width exceeding 1000 mm, the waste heat roll bending forming is to be realized. The process is that after the slab is rolled, it is subjected to splitting and trimming, and the structural steel is directly formed by using the waste heat after rolling through roll bending.

[0004] In the prior art, in order to enable the same device to produce structural steel of different specifications or shapes, it is necessary to adjust the positions of the vertical rolls and horizontal rolls of the forming machine. However, in the prior art, whether it is a cold bending forming or a hot bending forming device, the position of the forming rolls on the roll press, and the characteristics of the individual components on the forming rolls are large. And now there is no targeted auxiliary structure for adjustment, and only rely on hoisting and manual coordination for adjustment, which is very difficult to adjust. Generally, it takes at least more than 6 hours to adjust once, which seriously delays production. Summary of the Invention

[0005] The purpose of the present application is to provide a coaxial difference adjustment double-flow forming machine to solve the problem of difficult adjustment of each roll press at present.

[0006] To achieve the above purpose, the coaxial difference adjustment double-flow forming machine provided by the present application includes a frame, a forming unit and a transmission shaft. The transmission shaft includes an upper transmission shaft and a lower transmission shaft that are installed in parallel on the frame. A forming unit is installed on the frame. The forming unit includes an upper roll assembly, a lower roll assembly and a vertical roll assembly. The upper roll assembly is installed on the upper transmission shaft, the lower roll assembly is installed on the lower transmission shaft, and the two vertical roll assemblies are installed on two vertical short shafts. The two vertical roll assemblies are located on both sides of the upper roll assembly and the lower roll assembly. The upper roll assembly, the lower roll assembly and the two vertical roll assemblies form a forming channel; A first power mechanism for adjusting the upper and lower positions of the upper roll assembly and the lower roll assembly and a second power mechanism for adjusting the horizontal positions of the two vertical roll assemblies are installed on the frame.

[0007] Principle and advantages of the present application: During the installation of the forming machine, upper and lower roller assemblies that provide forming power are installed on the upper and lower drive shafts. Two vertical roller assemblies are installed on two vertical short shafts. The two vertical roller assemblies are not equipped with power. They are driven by the rotation of the upper and lower roller assemblies to drive the steel plate to be formed forward. The advancing steel plate drives the two vertical roller assemblies to rotate passively. The two vertical roller assemblies are located on both sides of the upper roller assembly and the lower roller assembly. The upper roller assembly, the lower roller assembly, and the two vertical roller assemblies form a forming channel. Compared with the equipment of the prior art, an auxiliary adjustment mechanism is directly installed on the forming machine in this solution, that is, the first power mechanism and the second power mechanism mentioned in this solution. The vertical positions of the upper and lower roller assemblies are adjusted by the first power mechanism, and the two vertical roller assemblies are laterally adjusted by the second power mechanism. In this way, steel plates of different models can be formed, and the vertical and lateral degrees of freedom can be adjusted. This makes the forming machine more versatile.

[0008] The upper drive shaft includes an operator side upper drive shaft and a drive side upper drive shaft. The lower drive shaft includes an operator side lower drive shaft and a drive side lower drive shaft. The operator side upper drive shaft and the drive side upper drive shaft are flexibly connected by a first universal coupling; the operator side lower drive shaft and the drive side lower drive shaft are flexibly connected by a second universal coupling.

[0009] When this forming machine is used in a dual-channel, due to the long wheelbase of the drive shaft, the drive shaft will have uneven forces at both ends during rotation, resulting in different deformations and vibrations. This will cause the upper and lower roller assemblies installed on the drive shaft to fluctuate. It not only cannot achieve good forming quality of the steel plate, but also will damage the upper and lower roller assemblies due to vibration. In this application, the drive shaft is divided into two independent shafts, divided into two groups on the operator side and the drive side. Since transmission is required both up and down, the operator side upper drive shaft, the drive side upper drive shaft, the operator side lower drive shaft, and the drive side lower drive shaft are used for distinction. Especially the ingenious design of flexibly connecting the operator side and the drive side by a coupling not only does not affect the transmission of power from the operator side to the drive side, but also realizes the misaligned rotation of the drive shafts on the operator side and the drive side in the vertical direction. Since the two ends rotate in a misaligned manner, the axial bending moments on both sides become smaller, eliminating the vibration phenomenon caused by the long wheelbase.

[0010] The first power mechanism and the second power mechanism have the same structure. The power mechanism includes a housing fixed to the frame and a telescopic mounting rod. The mounting rod is fixedly connected to the drive shaft through a bearing seat.

[0011] In order to adjust the distance between the upper and lower roller assemblies, it is a reasonable design to use a telescopic method for vertical adjustment. However, in order not to interfere with the rotation of the drive shaft, the movement relationship between the mounting rod and the drive shaft is separated by a bearing to avoid movement interference.

[0012] Two of the first power mechanisms are respectively provided on each of the driving shaft on the operation side, the driving shaft on the transmission side, the lower driving shaft on the operation side, and the lower driving shaft on the transmission side; two of the second power mechanisms are provided on each vertical short shaft.

[0013] During the roll bending process of the steel plate, if a special-shaped structure is formed, for example, the bending inclination angle of the steel plate cannot be achieved by horizontal adjustment in the transverse or vertical direction, this solution adjusts the distance between the two ends of the transmission shaft differently, so that the transmission shaft will have an inclination angle, and thus the upper and lower rolls can be assembled to achieve the inclination of the angle. Similarly, the second power mechanism adjusts the difference between the two ends of the vertical short shaft to achieve the inclination of the two vertical rolls.

[0014] A two-way push-pull oil cylinder is installed on the frame at the ends of the driving shaft on the operation side and the lower driving shaft on the operation side. The two-way push-pull oil cylinder includes a push-pull rod that rotates coaxially with the driving shaft on the operation side or the lower driving shaft on the operation side. One end of the push-pull rod is hinged to the inner output end of the two-way push-pull oil cylinder, and the other end of the push-pull rod is hinged to the driving shaft on the transmission side or the lower driving shaft on the transmission side; the outer output end of the two-way push-pull oil cylinder is hinged to the ends of the driving shaft on the operation side and the lower driving shaft on the operation side.

[0015] Since it is necessary to adjust the overall distance between the two forming channels, the best way is to adjust the distance between the driving shaft on the operation side and the driving shaft on the transmission side. In this application, a two-way push-pull oil cylinder is installed on the frame at the end of the driving shaft on the operation side, and the push-pull rod passes through the driving shaft on the operation side and is then hinged to the lower driving shaft on the transmission side. In this way, the push-pull oil cylinder adjusts the distance between the two driving shafts on both sides through the push-pull rod. Also, because the two shafts rotate differently, at the connection point, through the hinge method, the rotation is not interfered.

[0016] In addition, this solution uses a two-way push-pull oil cylinder, and the outer output end of the two-way push-pull oil cylinder is hinged to the ends of the driving shaft on the operation side and the lower driving shaft on the operation side. In this way, the two-way push-pull oil cylinder simultaneously pushes the driving shaft on the operation side and the driving shaft on the transmission side, improving the adjustment efficiency.

[0017] The first universal coupling and the second universal coupling have the same structure. The universal coupling structure includes a slider, a first coupling block, and a second coupling block; bearings connected to the transmission shaft are installed at the ends of the first coupling block and the second coupling block. The first coupling block is slidably fitted with one end of the slider, and the second coupling block is spherically hinged to the other end of the slider. Balance springs are provided between the slider and the first coupling block, and between the slider and the second coupling block.

[0018] This application is designed specifically for the universal coupling to ensure the strength of the connection and the normal transmission of force during the rotation process. The universal coupling is designed in the above manner. The coupling realizes the transmission of circumferential rotational force through the cooperation of the slider and the coupling block. Due to the misalignment in the horizontal and vertical directions, the distance adjustment in the horizontal and vertical directions can be achieved through the characteristics that the coupling slider and the coupling block can slide in the horizontal and vertical directions. In addition, the other end of the second coupling block is spherically hinged to the slider. In this way, there is misalignment between the operating side transmission shaft and the driving side during movement, and the hinged method can resolve the interference caused by the misalignment, enabling a certain inclination angle to be formed between the operating side transmission shaft and the driving side.

[0019] Another optional structure of the universal coupling includes a first coupling block and a second coupling block. One side of the first coupling block and the second coupling block is a plane and is equipped with bearings connected to the transmission shaft; the other side of the first coupling block is an arc-shaped ball head, and the other side of the second coupling block is a concave surface for accommodating the arc-shaped ball head. The first coupling block and the second coupling block are hinged, and balance springs are coaxially installed on both sides of the hinge point.

[0020] This application also designs another type of universal coupling. The difference between this coupling and the above-described coupling is that this coupling is directly hinged between the first coupling block and the second coupling block, which strengthens the axial connection force, but the flexibility is not as good as that of the above-described coupling. Which one to specifically use needs to be selected according to the actual situation.

[0021] A flexible cover is sleeved between the bearings on both sides of the universal coupling.

[0022] There is misalignment between the universal couplings. The flexible cover can protect against the problem of foreign objects getting stuck in the misaligned part and also prevent the risk of some slender components entering this part and being cut off.

[0023] The machine frame is equipped with side panels. Sliding grooves for facilitating the movement of the first power mechanism and the second power mechanism are opened on the side panels, and notches matching the forming channels are also opened.

[0024] Installing side panels outside the machine frame not only strengthens the stability of the entire machine frame but also protects the internal mechanisms and prevents foreign objects from entering the inside of the molding machine. Brief Description of the Drawings

[0025] Figure 1 It is a structural schematic diagram of a double-flow molding machine for coaxial difference adjustment;

[0026] Figure 2 It is a structural schematic diagram containing the side plates of the machine frame;

[0027] Figure 3 It is a structural schematic diagram of the transmission shaft;

[0028] Figure 4Schematic structural diagram of one kind of universal coupling;

[0029] Figure 5 is Figure 4 Cross-sectional view of the universal coupling in the K direction;

[0030] Figure 6 Schematic structural diagram of another kind of universal coupling;

[0031] Figure 7 is Figure 6 Cross-sectional view of the universal coupling in the K direction.

[0032] Explanation of reference numerals in the drawings of the specification: Frame 1, upper drive shaft 10 on the driving side, lower drive shaft 101 on the driving side, upper roll assembly 11, lower roll assembly 110, bearing 12, first power mechanism 13, vertical sliding groove 14; upper drive shaft 20 on the operating side, lower drive shaft 201 on the operating side, universal coupling 30, spherical head 31-1 on the arc surface, slider 31-2, balance spring 32-1 or 32-2, flexible cover 33-1 or 33-2; push-pull rod 40, outer output end 401 of the two-way push-pull oil cylinder, two-way push-pull oil cylinder 50, vertical short shaft 70, vertical roll assembly 701, second power mechanism 71, horizontal sliding groove 72, connecting piece 81. Specific embodiments

[0033] The following is a more detailed description through specific embodiments:

[0034] Embodiment 1:

[0035] As Figure 1 , Figure 2 shown, a coaxial difference-adjusting double-flow forming machine includes a frame 1, a forming unit, and a drive shaft. The drive shaft includes upper drive shafts (10, 20) and lower drive shafts (101, 201) that are parallelly installed on the frame 1. A forming unit is installed on the frame 1. The forming unit includes an upper roll assembly 11, a lower roll assembly, and a vertical roll assembly. The upper roll assembly is installed on the upper drive shaft, the lower roll assembly 110 is installed on the lower drive shaft, two vertical roll assemblies are installed on two vertical short shafts 70, and the two vertical roll assemblies 701 are on both sides of the upper roll assembly and the lower roll assembly. The upper roll assembly, the lower roll assembly, and the two vertical roll assemblies form a forming channel; a first power mechanism 13 for adjusting the up-and-down position of the upper roll assembly and the lower roll assembly and a second power mechanism 71 for adjusting the lateral position of the two vertical roll assemblies are installed on the frame 1. A layer of roll sleeve is sleeved outside the upper roll assembly. If there is wear in the roll bending, the roll sleeve can be directly replaced.

[0036] The upper driving shaft includes an operation - side upper driving shaft 20 and a transmission - side upper driving shaft 10. The lower driving shaft includes an operation - side lower driving shaft 201 and a transmission - side lower driving shaft 101. The operation - side upper driving shaft 20 and the transmission - side upper driving shaft 10 are flexibly connected by a universal coupling 30; the operation - side lower driving shaft 201 and the transmission - side lower driving shaft 101 are flexibly connected by another universal coupling 30.

[0037] The first power mechanism 13 and the second power mechanism 71 have the same structure. The main power - providing component is a hydraulic cylinder. The first power mechanism includes a housing fixed to the frame 1 and a telescopic mounting rod. The mounting rod is connected to the transmission shaft through a bearing 12. The telescopic movement of the hydraulic cylinder drives the transmission shaft to deflect. Because of the connection through the bearing, the transmission shaft rotates freely without being affected.

[0038] Two of the first power mechanisms 13 are respectively arranged on each of the operation - side upper driving shaft 20, the transmission - side upper driving shaft 10, the operation - side lower driving shaft 201, and the transmission - side lower driving shaft 101; two of the second power mechanisms 71 are arranged on each vertical short shaft 70.

[0039] As Figure 2 shown: The frame 1 is equipped with side panels. Vertical sliding grooves 14 facilitating the movement of the first power mechanism 13 and horizontal sliding grooves 72 facilitating the movement of the second power mechanism 71 are opened on the side panels, and notches matching the forming channels are also opened.

[0040] In this application, the transmission shaft is divided into two independent shafts, which are divided into two groups on the operation side and the transmission side. Since transmission is required both up and down, the operation - side upper driving shaft, the transmission - side upper driving shaft, the operation - side lower driving shaft, and the transmission - side lower driving shaft are used for distinction. In particular, the ingenious design of flexibly connecting the operation side and the transmission side by a coupling not only does not affect the power transmission from the operation side to the transmission side but also realizes the misaligned rotation of the transmission shafts on the operation side and the transmission side in the vertical direction. Because of the misaligned rotation at both ends, the axial bending moment on both sides becomes smaller, eliminating the vibration phenomenon caused by too long a wheelbase.

[0041] During the roll - bending process of the steel plate, the four hydraulic cylinders of the first power mechanism drive the transmission shaft to move up and down simultaneously, and the second power mechanism drives the vertical rollers to move horizontally for adjustment, so that the entire forming channel is scaled proportionally. If a special - shaped channel is to be formed, for example, the bending inclination angle of the steel plate cannot be achieved by horizontal adjustment in the horizontal or vertical direction. In this solution, by differentially adjusting the distance between the two ends of the transmission shaft, the transmission shaft will have an inclination angle, so that the upper and lower rollers can be assembled to achieve the inclined angle. Similarly, the differential adjustment of the two ends of the vertical short shaft by the second power mechanism realizes the inclination of the assembly of the two vertical rollers.

[0042] Embodiment 2:

[0043] AsFigure 1 and Figure 2 As shown in Figure 2 , a bidirectional push-pull oil cylinder 50 is installed on the frame at the ends of the upper driving shaft 20 on the operating side and the lower driving shaft 201 on the operating side. The bidirectional push-pull oil cylinder 50 includes a push rod 40 that rotates coaxially with the upper driving shaft on the operating side or the lower driving shaft on the operating side. One end of the push rod 40 is hinged to the inner layer output end of the bidirectional push-pull oil cylinder, and the other end of the push rod 40 is hinged to the upper driving shaft 10 on the driving side or the lower driving shaft 101 on the driving side; the outer layer output end 401 of the bidirectional push-pull oil cylinder is hinged to the ends of the upper driving shaft 20 on the operating side and the lower driving shaft 201 on the operating side. In this way, the bidirectional push-pull oil cylinder 50 simultaneously pushes the driving shafts on the operating side and the driving side, improving the adjustment efficiency.

[0044] Embodiment 3

[0045] As Figure 6 and Figure 7 shown in Figure 7 , the universal coupling 30 of this embodiment includes a first coupling block and a second coupling block. One side of the first coupling block and the second coupling block is a plane and is equipped with bearings connected to the driving shaft; the other side of the first coupling block is an arc-shaped ball head 31-1, and the other side of the second coupling block is a concave surface for accommodating the arc-shaped ball head. The first coupling block and the second coupling block are hinged, and balance springs 32-1 are coaxially installed on both sides of the hinge point. A flexible cover 33-1 is sleeved between the bearings on both sides of the universal coupling. Figure 6 and Figure 7 Respectively represented from the front view section and the top view section, the universal coupling can be misaligned in the horizontal and vertical directions.

[0046] Embodiment 4

[0047] As Figure 4 and Figure 5 shown in Figure 5 , the structure of the universal coupling 30 in this embodiment includes a slider 31-2, a first coupling block and a second coupling block; bearings connected to the driving shaft are installed at the ends of the first coupling block and the second coupling block. The first coupling block is slidably matched with one end of the slider, and the second coupling block is spherically hinged with the other end of the slider. Balance springs 32-2 are provided between the slider and the first coupling block, and between the slider and the second coupling block. A flexible cover 33-2 is sleeved between the bearings on both sides of the universal coupling. Similarly, Figure 4 and Figure 5 also represented from the front view section and the top view section respectively, the universal coupling can be misaligned in the horizontal and vertical directions.

[0048] The present invention can be used in the production and processing equipment for directly hot roll bending and forming structural steel of hot-rolled wide and thick steel plates or coils (thickness ≥ 6 - 50 mm, width ≥ 1000 - 5400 mm, temperature 500 - 1000 °C, not limited to these data), especially applicable to the structural steel formed by the waste heat of hot-rolled strip, for the production of heavy section steel in double-flow or single-flow, to solve the problem of adjusting the position of the forming rolls of the roll press; it can also be used in other hot and cold metal forming double-flow or single-flow production, and the equipment for adjusting the position pressure hydraulic cylinder of the forming rolls.

[0049] Both the first power mechanism and the second power mechanism mentioned in the embodiment adopt hydraulic cylinders, which are called lifting cylinders and horizontal pushing cylinders in this embodiment. According to the requirements of the size of the forming channel, automatic control adjustment can be carried out through the lifting cylinder and the horizontal pushing cylinder. It is not necessary to replace the entire body frame for each specification of section steel. The forming rolls can be automatically adjusted according to the needs of the production of section steel, and conditions are created for intelligent control.

[0050] The forming device of the present invention can be used to produce section steel on the forming devices of double-flow or single-flow forming channels, and can adopt a single stand or a combination of multiple stands. When multiple stands are combined, the distance between stands is reduced, and heat loss is reduced during waste heat forming. It can be quickly replaced by a single stand or quickly replaced by multiple stands, improving production efficiency.

[0051] The above embodiments merely illustrate the principles and effects of the present invention by way of example, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. Coaxial differential adjustment double-flow forming machine, comprising a frame, a forming unit and a transmission shaft, characterized in that, The transmission shaft includes an upper transmission shaft and a lower transmission shaft that are installed in parallel on the frame. A forming unit is installed on the frame. The forming unit includes an upper roll assembly, a lower roll assembly, and a vertical roll assembly. The upper roll assembly is installed on the upper transmission shaft, the lower roll assembly is installed on the lower transmission shaft, and the two vertical roll assemblies are installed on two vertical short shafts. The two vertical roll assemblies are located on both sides of the upper roll assembly and the lower roll assembly. The upper roll assembly, the lower roll assembly, and the two vertical roll assemblies form a forming channel. A first power mechanism for adjusting the upper and lower positions of the upper roll assembly and the lower roll assembly and a second power mechanism for adjusting the two vertical roll assemblies laterally are installed on the frame. The upper transmission shaft includes an operation-side upper transmission shaft and a drive-side upper transmission shaft. The lower transmission shaft includes an operation-side lower transmission shaft and a drive-side lower transmission shaft. The operation-side upper transmission shaft and the drive-side upper transmission shaft are flexibly connected by a first universal coupling. The operation-side lower transmission shaft and the drive-side lower transmission shaft are flexibly connected by a second universal coupling. A two-way push-pull oil cylinder is installed on the frame at the ends of the operation-side upper transmission shaft and the operation-side lower transmission shaft. The two-way push-pull oil cylinder includes a push rod that rotates coaxially with the operation-side upper transmission shaft or the operation-side lower transmission shaft. One end of the push rod is hinged to the inner output end of the two-way push-pull oil cylinder, and the other end of the push rod is hinged to the drive-side upper transmission shaft or the drive-side lower transmission shaft. The outer output end of the two-way push-pull oil cylinder is hinged to the ends of the operation-side upper transmission shaft and the operation-side lower transmission shaft.

2. The coaxial differential adjustment double-flow forming machine according to claim 1, wherein: The first power mechanism and the second power mechanism have the same structure. The power mechanism includes a housing fixed to the frame and a telescopic mounting rod. The mounting rod is fixedly connected to the transmission shaft through a bearing block.

3. The coaxial differential adjustment double-flow forming machine according to claim 2, characterized in that: Two of the first power mechanisms are respectively provided on the operation-side upper transmission shaft, the drive-side upper transmission shaft, the operation-side lower transmission shaft, and the drive-side lower transmission shaft. Two of the second power mechanisms are provided on each vertical short shaft.

4. The coaxial differential adjustment double-stream forming machine according to claim 3, wherein: The first universal coupling and the second universal coupling have the same structure. The universal coupling structure includes a slider, a first coupling block, and a second coupling block. Bearings for connecting to the transmission shaft are installed at the ends of the first coupling block and the second coupling block. The first coupling block is slidably fitted with one end of the slider, and the second coupling block is spherically hinged to the other end of the slider. Balance springs are provided between the slider and the first coupling block and between the slider and the second coupling block.

5. The coaxial differential adjustment double-flow forming machine according to claim 4, wherein: Another optional structure of the first universal coupling and the second universal coupling includes a first coupling block and a second coupling block. One side of the first coupling block and the second coupling block is a plane and is provided with a bearing for connecting to the transmission shaft. The other side of the first coupling block is an arc-shaped ball head, and the other side of the second coupling block is a concave surface for accommodating the arc-shaped ball head. The first coupling block and the second coupling block are hinged, and balance springs are coaxially installed on both sides of the hinge point.

6. The coaxial differential adjustment double-flow forming machine according to claim 4 or 5, characterized in that A flexible cover is sleeved between the bearings on both sides of the universal coupling.

7. The coaxial differential adjustment double-stream forming machine according to claim 6, characterized in that: The frame is installed with side panels. Sliding grooves for facilitating the movement of the first power mechanism and the second power mechanism are opened on the side panels, and notches matching the forming channel are opened.

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