Four-roll plate rolling machine roll gap synchronous adjusting mechanism

Abstract

The utility model relates to four roll plate rolling machine technical field, concretely, four roll plate rolling machine's roll gap synchronous adjusting mechanism, including frame, set up side edge roll and set up center roll on the frame on the frame, the both sides plate body outside surface of frame all fixed mounting has the guide seat, the guide seat is slidably connected with the support seat that is vertically arranged, two support seats are rotatably connected with the upper roll through the pivot, the upper roll is driven to rotate through the motor, the upper roll is located the upside of center roll, one side of guide seat is provided with hydraulic cylinder, and the support seat sets up on the telescopic axle of hydraulic cylinder, a plurality of limit slot are all provided on the left and right sides of support seat, the left and right sides of guide seat both sides plate body all are screw -threaded with two fastening bolts, the end of fastening bolt is fixedly installed with the limit post, and the limit post is inserted with the cooperation between corresponding limit slot. The utility model is convenient for the synchronous adjusting operation of roll gap, and has the effect of locking and limiting simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of four-roll plate bending machines, and more specifically, to a roller gap synchronous adjustment mechanism for four-roll plate bending machines. Background Technology

[0002] In the metal processing fields such as pressure vessel manufacturing, pipeline manufacturing, and shipbuilding, the four-roll plate bending machine is the core equipment for realizing the bending and forming of metal sheets. Its roll gap accuracy directly determines the accuracy of the plate rolling curvature. The roll gap adjustment of the four-roll plate bending machine needs to be adjusted around the upper roll, the center roll, and the side rolls. Most existing four-roll plate rolling machines adopt a single-sided independent adjustment structure. For example, if a hydraulic cylinder is set on one side, the adjustment is achieved by working the hydraulic cylinder on one side. During adjustment, the movement deviation of the upper roller is easily caused by the weight of the roller body and the single-sided support, resulting in an asymmetrical state of "wider on the left and narrower on the right" in the roller gap. The curvature deviation of the rolled metal sheet exceeds 5%, requiring secondary correction, which increases processing costs and time. Furthermore, traditional adjustment mechanisms rely solely on the hydraulic lock of the hydraulic cylinder for positioning. When rolling thick plates, the upper roller bears a large force, and the hydraulic lock is prone to minor leaks due to pressure fluctuations. This causes the support seat to slowly move the upper roller downwards, gradually narrowing the roll gap during the rolling process, resulting in excessive bending of the plate in certain areas and affecting the manufacturing effect. Therefore, we propose a synchronous roll gap adjustment mechanism for a four-roll plate rolling machine. Utility Model Content

[0003] The purpose of this invention is to provide a synchronous adjustment mechanism for the roll gap of a four-roll plate bending machine, so as to solve the defects mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: The roll gap synchronous adjustment mechanism of the four-roll plate bending machine includes a frame, side rolls mounted on the frame, and a center roll mounted on the frame. Guide seats are fixedly installed on the outer surfaces of both side plates of the frame. Vertically arranged support seats are slidably connected inside the guide seats. An upper roll is rotatably connected between the two support seats via a rotating shaft. The upper roll is driven to rotate by a motor and is located directly above the center roll. A hydraulic cylinder is provided on one side of the guide seat. The support seats are mounted on the telescopic shaft of the hydraulic cylinder. Multiple limit slots are provided on both the left and right sides of the support seats. Two symmetrical fastening bolts are threaded onto both the left and right side plates of the guide seat. Limiting pins are fixedly installed at the ends of the fastening bolts, and the limiting pins are inserted into the corresponding limiting slots.

[0005] Preferably, the center roller and the side rollers are rotatably connected to the left and right side plates of the frame, the center roller is located between the two side rollers, and the center roller and the side rollers are driven to rotate by a motor.

[0006] Preferably, the limiting slots on the left and right sides of the support base are staggered, and the distance between two adjacent limiting slots is less than the outer diameter of the limiting post. This setting helps ensure that there is always a limit pin that can be stably inserted into the limit slot for limit operation.

[0007] Preferably, the size of the limiting pin is adapted to the size of the limiting slot, and the size of the support base is adapted to the size of the guide base; This setting facilitates stable assembly and limit operation.

[0008] Preferably, the guide seat is provided with a groove whose top is connected to the outside, and the support seat is located in the groove and slidably connected to the groove.

[0009] Preferably, a side plate is fixedly installed on the side of the support base, and a steel plate is fixedly installed at the end of the telescopic shaft of the hydraulic cylinder. The steel plate is detachably installed on the bottom surface of the side plate.

[0010] Preferably, the front side wall of the chute is provided with a through groove, and the side plate extends through the through groove and is slidably connected to the through groove.

[0011] Preferably, a base plate is fixedly installed on the front side of the guide seat near the bottom, and the base of the hydraulic cylinder is fixedly installed on the base plate.

[0012] Preferably, a waste oil hole is provided on the bottom side wall of the chute, and a sealing plug is threaded into the waste oil hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model sets up symmetrical guide seats, support seats and hydraulic cylinders on both sides of the frame. The two support seats are respectively connected to the telescopic shaft of the hydraulic cylinder and jointly support the upper roller. The hydraulic cylinder synchronously drives the support seats to move vertically along the guide seat slide groove, avoiding the deviation of the upper roller movement caused by the roller body's own weight and unilateral support in traditional unilateral adjustment.

[0014] 2. This utility model adopts a structure in which the limiting slot of the support seat and the fastening bolt and limiting pin of the guide seat cooperate. After adjusting the roll gap, tightening the fastening bolt will cause the limiting pin to be inserted into the corresponding limiting slot, forming a mechanical limit. With the hydraulic lock of the hydraulic cylinder for double positioning, even when the upper roller is subjected to large radial pressure when rolling thick plates, it can prevent the support seat from driving the upper roller to move downward, avoid excessive bending of the plate caused by the narrowing of the roll gap, ensure stable rolling effect, and meet the requirements of high-precision processing.

[0015] 3. This utility model optimizes the assembly design of the support base and the guide base. The size of the support base is adapted to the guide base slide groove. The side plate passes through the through groove and slides, ensuring that the support base moves smoothly. The limit slots on both sides of the support base are staggered and the distance between adjacent slots is less than the outer diameter of the limit pin. There is always a limit pin stably inserted into the slot, without the need for repeated calibration and positioning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the partial structural schematic diagrams of this utility model; Figure 3 This is the second partial structural schematic diagram of the present utility model; Figure 4 This is a cross-sectional view of the support base of this utility model; The meanings of the labels in the diagram are as follows: 1. Frame; 10. Side rollers; 11. Center roller; 12. Top roller; 2. Support base; 20. Limiting slot; 21. Side plate; 22. Guide seat; 221. Slide groove; 222. Through groove; 23. Base plate; 24. Hydraulic cylinder; 241. Steel plate; 25. Fastening bolt; 251. Limiting insert; 26. Waste oil hole; 261. Sealing plug. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a synchronous adjustment mechanism for the roll gap of a four-roll plate rolling machine, including a frame 1, side rollers 10 mounted on the frame 1, and a center roller 11 mounted on the frame 1. Guide seats 22 are fixedly installed on the outer surfaces of both sides of the frame 1. Vertical support seats 2 are slidably connected inside the guide seats 22. An upper roller 12 is rotatably connected between the two support seats 2 via a rotating shaft. The upper roller 12 is driven to rotate by a motor and is located directly above the center roller 11. A hydraulic cylinder 24 is provided on one side of the guide seat 22. The support seats 2 are mounted on the telescopic shaft of the hydraulic cylinder 24, so that the distance between the upper roller 12 and the center roller 11 can be adjusted by the operation of the hydraulic cylinder 24, so that the roll gap can be easily adjusted. Moreover, the two hydraulic cylinders 24 work synchronously to achieve the effect of synchronously adjusting the height of the two ends of the upper roller 12.

[0020] In this embodiment, multiple limiting slots 20 are provided on both the left and right sides of the support base 2. Two symmetrical fastening bolts 25 are threaded onto both the left and right sides of the guide base 22. Limiting inserts 251 are fixedly installed at the ends of the fastening bolts 25. The limiting inserts 251 and the corresponding limiting slots 20 are inserted and engaged. After adjusting the roll gap, tightening the fastening bolts 25 can form a mechanical limit. With the hydraulic lock of the hydraulic cylinder 24, the upper roller 12 is prevented from moving down when rolling thick plates, thus ensuring the stability of the roll gap.

[0021] Specifically, the center roller 11 and the side rollers 10 are rotatably connected to the left and right side plates of the frame 1. The center roller 11 is located between the two side rollers 10. The center roller 11 and the side rollers 10 are driven to rotate by a motor, providing a stable support and transmission foundation for the rolling of metal sheets, ensuring that the sheet is subjected to uniform force during the rolling process, and reducing sheet deformation caused by improper roller position.

[0022] Furthermore, the limiting slots 20 on the left and right sides of the support base 2 are staggered, and the distance between two adjacent limiting slots 20 is less than the outer diameter of the limiting pin 251, ensuring that there is always a limiting pin 251 inserted into the limiting slot 20 during the adjustment process, without the need for repeated calibration, thus improving the continuity and stability of the roll gap adjustment.

[0023] In addition, the dimensions of the limiting insert 251 are matched with the dimensions of the limiting slot 20, and the dimensions of the support seat 2 are matched with the dimensions of the guide seat 22, ensuring that all components are tightly assembled, reducing the fit gap, preventing the support seat 2 from shaking when moving, further improving the roll gap adjustment accuracy, and meeting the high-precision rolling requirements.

[0024] like Figure 3 As shown, the guide seat 22 is provided with a slide groove 221 that is connected to the outside at the top. The support seat 2 is located in the slide groove 221 and is slidably connected to the slide groove 221, so that the support seat 2 can move up and down stably.

[0025] like Figure 3 As shown, a side plate 21 is fixedly installed on the side of the support base 2, and a steel plate 241 is fixedly installed at the end of the telescopic shaft of the hydraulic cylinder 24. The steel plate 241 can be detachably installed on the bottom surface of the side plate 21, which facilitates the disassembly of the support base 2 for maintenance or replacement, reduces the difficulty of equipment maintenance, and extends the service life of the equipment.

[0026] like Figure 3 As shown, a through groove 222 is provided on the front side wall of the chute 221. The side plate 21 passes through the through groove 222 and is slidably connected to the through groove 222, providing moving space for the side plate 21 and restricting the moving direction of the support 2, ensuring that the support 2 drives the upper roller 12 to move vertically without deviation.

[0027] like Figure 3 As shown, a base plate 23 is fixedly installed on the front side of the guide seat 22 near the bottom. The base of the hydraulic cylinder 24 is fixedly installed on the base plate 23 to provide stable support for the hydraulic cylinder 24, prevent the hydraulic cylinder 24 from shaking during the driving process, and ensure the synchronicity and stability of the movement of the support seat 2.

[0028] It is worth noting that a waste oil hole 26 is provided on the bottom side wall of the chute 221. A sealing plug 261 is internally threaded into the waste oil hole 26. Lubricating oil can be added into the chute 221 to reduce friction. Subsequently, the waste oil in the chute 221 can be discharged through the waste oil hole 26.

[0029] Finally, it should be noted that the two hydraulic cylinders 24 are controlled by the same hydraulic control system, enabling them to work synchronously and ensuring that the extension and retraction lengths of their telescopic shafts remain consistent. Furthermore, the hydraulic cylinders 24, the corresponding hydraulic source, the corresponding control system, and the external power supply components of this invention are all standard components or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods. In the idle spaces of this device, all the aforementioned electrical components (referring to power elements, electrical components, and compatible controllers and power supplies) are connected via wires. Specific connection methods should refer to the working principle of this invention. The electrical connections between the components are completed according to their sequential operation, and the detailed connection methods are all technologies known in the art.

[0030] When using the roller gap synchronous adjustment mechanism of the four-roll plate bending machine of this utility model, loosen the fastening bolt 25 on the guide seat 22 so that the limiting insert 251 disengages from the limiting slot 20 of the support seat 2, ensuring that the support seat 2 can move smoothly along the slide groove 221 of the guide seat 22. Based on the thickness of the metal sheet, start the two hydraulic cylinders 24 on the bottom plate 23 of the guide seat 22. The hydraulic cylinders 24 drive the support seat 2 to move vertically in sync through the steel plate 241 and the side plate 21, and adjust the distance between the upper roller 12 and the center roller 11 to the target roller gap. During this period, observe to ensure that the movement of the support seats 2 on both sides is consistent. After the roll gap meets the standard, tighten the fastening bolt 25 so that the limit pin 251 is inserted into the corresponding limit slot 20 to form a mechanical limit. Place the metal sheet between the center roller 11 and the side roller 10, start the motor to drive each roller to rotate, and the sheet is bent and shaped between the rollers.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A roll gap synchronous adjustment mechanism for a four-roll plate bending machine, comprising a frame (1), side rolls (10) disposed on the frame (1), and a center roll (11) disposed on the frame (1), characterized in that: Guide seats (22) are fixedly installed on the outer surfaces of both sides of the frame (1). A vertically arranged support seat (2) is slidably connected inside the guide seat (22). An upper roller (12) is rotatably connected between the two support seats (2) through a rotating shaft. The upper roller (12) is driven to rotate by a motor. The upper roller (12) is located directly above the center roller (11). A hydraulic cylinder (24) is provided on one side of the guide seat (22). The support seat (2) is located on the telescopic shaft of the hydraulic cylinder (24). Multiple limit slots (20) are provided on both the left and right sides of the support seat (2). Two symmetrical fastening bolts (25) are threaded onto both the left and right sides of the guide seat (22). Limiting pins (251) are fixedly installed at the ends of the fastening bolts (25). The limiting pins (251) are inserted into the corresponding limiting slots (20).

2. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 1, characterized in that: The center roller (11) and the side rollers (10) are rotatably connected to the left and right side plates of the frame (1). The center roller (11) is located between the two side rollers (10). The center roller (11) and the side rollers (10) are driven to rotate by a motor.

3. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 1, characterized in that: The limiting slots (20) on the left and right sides of the support base (2) are staggered, and the distance between two adjacent limiting slots (20) is less than the outer diameter of the limiting post (251).

4. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 1, characterized in that: The size of the limiting pin (251) is adapted to the size of the limiting slot (20), and the size of the support base (2) is adapted to the size of the guide base (22).

5. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 1, characterized in that: The guide seat (22) is provided with a groove (221) whose top is connected to the outside. The support seat (2) is located in the groove (221) and is slidably connected to the groove (221).

6. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 5, characterized in that: A side plate (21) is fixedly installed on the side of the support base (2), and a steel plate (241) is fixedly installed at the end of the telescopic shaft of the hydraulic cylinder (24). The steel plate (241) is detachably installed on the bottom surface of the side plate (21).

7. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 6, characterized in that: The front side wall of the slide (221) is provided with a through groove (222), and the side plate (21) passes through the through groove (222) and is slidably connected to the through groove (222).

8. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 1, characterized in that: A base plate (23) is fixedly installed on the front side of the guide seat (22) near the bottom, and the base of the hydraulic cylinder (24) is fixedly installed on the base plate (23).

9. The roll gap synchronous adjustment mechanism of the four-roll plate bending machine according to claim 7, characterized in that: Waste oil hole (26) is provided on the bottom side wall of the chute (221), and a sealing plug (261) is threaded into the waste oil hole (26).

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