A strip anti-wrinkle device for a thin strip precision rolling mill

Abstract

The utility model relates to the technical field of rolling mill equipment, concretely to a thin strip precision rolling mill's plate strip anti -wrinkle device, including the fixed base, fixedly installed have telescopic pneumatic cylinder and the sliding connection have guide rod on the base, the telescopic pneumatic cylinder's telescopic direction is parallel with the sliding direction of guide rod, the output of telescopic pneumatic cylinder and the one end of guide rod are simultaneously connected with the compression roller device rotation, the output of telescopic pneumatic cylinder rotation is connected with the carrier roller device. Through using telescopic pneumatic cylinder control compression roller device press down the plate strip, avoid the condition that the pressure is too big, cut off the plate strip, spring device sticks to the plate strip face through the hinge point control carrier roller device, can change the sticking position according to the change of roll diameter, guarantee carrier roller device always holds the plate strip, auxiliary compression roller device press down the plate strip together, when the pressure relief valve triggers causes the pressure reduction of compression roller device to the plate strip, through carrier roller device also can press down the plate strip, makes the plate strip coiling not to cause the wrinkle.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, specifically to a strip anti-wrinkle device for a thin strip precision rolling mill. Background Technology

[0002] During the rolling process of thin strip, various factors such as improper tension control, mechanical structural defects, environmental factors and material properties can cause the strip to wrinkle during the winding process, which will affect the quality of the finished steel coil. Strip wrinkles will also reduce the utilization rate of finished coils and increase the cost of processes such as inspection and sorting. If wrinkles are accompanied by other defects, they may also cause safety accidents.

[0003] Most current anti-wrinkle devices for strip steel consist of an anti-wrinkle roller installed at the front end of the feed guide plate. The hydraulic cylinder actuates to press the anti-wrinkle roller against the strip on the drum. The stroke direction of the hydraulic cylinder is generally close to tangent to the roller. The hydraulic cylinder stroke is controlled by a pressure relief valve to change with the diameter of the steel coil. This type of anti-wrinkle device initially has a close tangent angle with the strip, which, while pressing the strip on the roller, can also push the strip between the feed guide plate and the roller, forming a force that pulls the strip on the roller out, thus tightening the strip on the drum without wrinkles and achieving a good anti-wrinkle effect.

[0004] However, as the roll diameter increases, the pressure point angle of the strip changes due to the change in roll diameter. The larger the roll diameter, the larger the angle between the pressure direction of the anti-wrinkle roller and the strip. It no longer forms a near-tangential angle with the wound strip, but rather a closer angle perpendicular to the strip. This causes most of the pressure from the anti-wrinkle roller to become pressure on the strip. Due to excessive pressure provided by the hydraulic cylinder, the strip may break. Furthermore, since the strip is pressed by only the anti-wrinkle roller, when the pressure relief valve is triggered, the pressure of the anti-wrinkle roller on the strip decreases, and the strip may wrinkle due to its own tension and other factors. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a strip anti-wrinkle device for a thin strip precision rolling mill, comprising a fixed base, on which a telescopic cylinder is fixedly mounted and a guide rod is slidably connected. The telescopic direction of the telescopic cylinder is parallel to the sliding direction of the guide rod. The output end of the telescopic cylinder and one end of the guide rod are rotatably connected to a pressure roller device. The output end of the telescopic cylinder is rotatably connected to a support roller device, and the output end of the telescopic cylinder is rotatably connected to a spring device. The other end of the spring device is connected to the support roller device to drive the support roller device to rotate away from the telescopic cylinder.

[0006] As a preferred technical solution of this utility model: the base is fixedly installed with sliding sleeves located on opposite sides of the telescopic cylinder, and a guide rod is slidably connected inside each sliding sleeve.

[0007] As a preferred technical solution of this utility model: one end of the two guide rods and the output end of the telescopic cylinder are fixedly connected to the mounting bracket, and the pressure roller device is rotatably connected to the mounting bracket.

[0008] As a preferred technical solution of this utility model: a shaft core is fixedly installed on the mounting bracket, and the pressure roller device is rotatably sleeved on the shaft core.

[0009] As a preferred technical solution of this utility model: the two ends of the shaft are respectively rotatably connected to connecting rods, one side of the two connecting rods is rotatably connected to a roller device, and one end of the spring device is rotatably connected to the connecting rod.

[0010] As a preferred technical solution of this utility model: the mounting bracket is U-shaped, and the shaft is fixedly installed inside the mounting bracket.

[0011] As a preferred technical solution of this utility model, the idler roller device and the pressure roller device are parallel to each other.

[0012] As a preferred technical solution of this utility model: the middle section of the connecting rod is rotatably connected to the shaft core, and the end of the connecting rod away from the idler roller device is rotatably connected to the spring device.

[0013] As a preferred technical solution of this utility model: two spring mounting seats are fixedly installed on the mounting bracket, and the ends of the two spring devices away from the connecting rod are respectively rotatably connected to the two spring mounting seats.

[0014] As a preferred technical solution of this utility model: the extension and retraction direction of the telescopic cylinder is at an angle of no more than 30 degrees with the tangent of the roller of the plate to be rolled.

[0015] This utility model has the following beneficial effects:

[0016] By using a telescopic cylinder to control the pressure roller device to press down on the strip, the situation of excessive pressure and cutting the strip is avoided. The spring device controls the idler roller device to fit against the strip surface through the hinge point. The fitting position can be changed according to the roll diameter to ensure that the idler roller device always supports the strip. Together with the pressure roller device, it presses down on the strip. When the pressure relief valve is triggered and the pressure of the pressure roller device on the strip decreases, the idler roller device can also press down on the strip to prevent wrinkles from forming during the winding of the strip. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure provided by this utility model.

[0018] Figure 2 This is a top sectional view provided by this utility model.

[0019] Figure 3 This utility model provides Figure 1Enlarged diagram of point A in the diagram

[0020] Appendix Figure 1-3 The structures represented by each label are listed below:

[0021] 1. Base; 101. Sliding sleeve; 2. Telescopic cylinder; 3. Pressure roller device; 301. Shaft core; 302. Spring mounting seat; 303. Mounting bracket; 4. Guide rod; 5. Idler roller device; 501. Connecting rod; 6. Spring device. Detailed Implementation

[0022] The principles and features of this utility model are described below. The embodiments given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0023] It should be noted that when a part or component is considered to be "connected to," "located on," or "assembled" to another part or component, it can be directly mounted on the other part or component, or it may be located in an intermediate part or component. The terms "left," "right," "upper," "lower," and similar expressions used in this document are for illustrative purposes only.

[0024] Example 1, as Figure 1-3 As shown, a strip anti-wrinkle device for a thin strip precision rolling mill includes a fixed base 1. A telescopic cylinder 2 and a guide rod 4 are fixedly installed on the base 1. The telescopic direction of the telescopic cylinder 2 is parallel to the sliding direction of the guide rod 4. The output end of the telescopic cylinder 2 and one end of the guide rod 4 are rotatably connected to a pressure roller device 3. Sliding sleeves 101 located on opposite sides of the telescopic cylinder 2 are fixedly installed on the base 1. A guide rod 4 is slidably connected inside each sliding sleeve 101, so that the telescopic cylinder 2 provides power to move the pressure roller device 3. The guide rod 4 restricts the movement direction of the pressure roller device 3. A roller device 5 is rotatably connected to the output end of the telescopic cylinder 2. A spring device 6 is rotatably connected to the output end of the telescopic cylinder 2. The other end of the spring device 6 is connected to the roller device 5 to drive the roller device 5 to rotate away from the telescopic cylinder 2.

[0025] A mounting bracket 303 is fixedly connected to one end of each of the two guide rods 4 and the output end of the telescopic cylinder 2. The pressure roller device 3 is rotatably connected to the mounting bracket 303, and the idler roller device 5 and the spring device 6 are also rotatably connected to the mounting bracket 303. A shaft core 301 is fixedly mounted on the mounting bracket 303, and the pressure roller device 3 is rotatably sleeved on the shaft core 301. The idler roller device 5 is of equal length to the pressure roller device 3 and is located in the same vertical plane, so that the pressure roller device 3 and the idler roller device 5 can contact the strip simultaneously.

[0026] The mounting bracket 303 is U-shaped, and the shaft core 301 is fixedly installed inside the mounting bracket 303.

[0027] The telescopic cylinder 2 drives the pressure roller device 3 to move into contact with the strip, pressing the strip to prevent wrinkles. The pressure provided by the telescopic cylinder 2 is controlled by the pressure relief valve. The spring device 6 drives the idler roller device 5 to rotate, so that the idler roller device 5 also rotates into contact with the strip, assisting the pressure roller device 3 in pressing the strip together to prevent wrinkles.

[0028] Example 2, as Figure 1-3 As shown, this embodiment is a further improvement on Embodiment 1. Connecting rods 501 are rotatably connected to both ends of the shaft core 301. A roller device 5 is rotatably connected to one side of each connecting rod 501. The roller device 5 is located on opposite sides of the same end of the two connecting rods 501. One end of the spring device 6 is rotatably connected to the connecting rod 501. The roller device 5, the pressure roller device 3, and the belt it contacts are parallel in width direction. The middle section of the connecting rod 501 is rotatably connected to the shaft core 301. When the connecting rod 501 rotates, it can drive the roller device 5 to rotate around the shaft core 301 as its axis. The roller device 5 can also rotate around its connection point with the connecting rod 501. The end of the connecting rod 501 away from the roller device 5 is rotatably connected to the spring device 6, making the connecting rod 501 a lever. This allows the spring device 6 to drive the roller device 5 to rotate during extension and retraction.

[0029] The strip anti-wrinkle device of the above-mentioned thin strip precision rolling mill can be further optimized and / or improved according to actual needs:

[0030] The extension and retraction direction of the telescopic cylinder 2 is at an angle of no more than 30 degrees to the tangent of the roller of the sheet to be rolled. The tangent of the roller of the sheet to be rolled is the tangent of the contact position between the pressure roller device 3 and the roller of the sheet to be rolled, so as to improve the anti-wrinkle effect.

[0031] Two spring mounting seats 302 are fixedly installed on the mounting bracket 303. The ends of the two spring devices 6 away from the connecting rod 501 are respectively rotatably connected to the two spring mounting seats 302, making the installation of the spring devices 6 more stable and convenient.

[0032] In summary: By using the telescopic cylinder 2 to control the pressure roller device 3 to press the strip, the situation of excessive pressure and cutting the strip is avoided. The spring device 6 controls the idler roller device 5 to adhere to the strip surface through the hinge point. The contact position can be changed according to the roll diameter to ensure that the idler roller device 5 always supports the strip. Together with the pressure roller device 3, the strip is pressed down. When the pressure relief valve is triggered and the pressure of the pressure roller device 3 on the strip decreases, the idler roller device 5 can also press down the strip, so that the strip does not wrinkle during winding.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Anyone skilled in the art can smoothly implement this utility model according to the accompanying drawings and the above description. However, any modifications, alterations, or equivalent changes made by those skilled in the art without departing from the scope of the technical solution of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or evolutions made to the above embodiments based on the essential technology of this utility model are still within the protection scope of the technical solution of this utility model.

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