A variable stroke oil cylinder for unwinding machine

Abstract

The utility model discloses a variable stroke oil cylinder for an uncoiler, which relates to the technical field of oil cylinders, and includes a cylinder body, a piston, a piston rod, and a cushion block. An active cavity is provided in the cylinder body, the piston is slidably arranged in the active cavity, one end of the piston rod is inserted into the active cavity and fixed with the piston, and the piston drives the piston rod to extend or retract in the active cavity; at least one cushion block is arranged in the active cavity, sleeved on the outer periphery of the piston rod, and located on the movement path of the piston driving the piston rod to extend out of the active cavity, so as to reduce the stroke of the piston in the active cavity. The utility model changes the transmission distance of the oil cylinder, so that the oil cylinder can be applied to the uncoiler or coiler of different rolling mills, and there is no need to purchase a variety of oil cylinders of different specifications as spares, which reduces production costs and increases the applicability of a single oil cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to an oil cylinder with variable stroke for an unwinding machine. Background Art

[0002] The uncoiler and coiler of the aluminum foil rolling mill usually use a cylinder, and the transmission distance of the cylinder is the stroke of the piston movement. However, the uncoilers and coilers of different rolling mills are suitable for different transmission distances of the cylinders, and the transmission distances of the cylinders of the existing uncoilers and coilers are fixed. However, in actual use, the transmission distance of the cylinder needs to be variable. When the transmission distance of the cylinder needs to be changed, the cylinder can only be replaced. Therefore, the applicability of a single cylinder is low, and it is necessary to purchase cylinders of various specifications as spares, which increases production costs. Utility Model Content

[0003] The utility model aims to provide a variable stroke oil cylinder for an uncoiler, which overcomes the above-mentioned defects, can change the transmission distance of the oil cylinder, and improve the applicability of the oil cylinder.

[0004] To achieve the above objectives, the solution of the utility model is:

[0005] A variable-stroke oil cylinder for an uncoiler comprises a cylinder body, a piston, a piston rod and a cushion block. An active cavity is arranged in the cylinder body, the piston is slidably arranged in the active cavity, one end of the piston rod is inserted into the active cavity and fixed to the piston, and the piston drives the piston rod to extend or retract into the active cavity; at least one cushion block is arranged in the active cavity, sleeved on the outer periphery of the piston rod, and located on the movement path of the piston driving the piston rod to extend into the active cavity, so as to reduce the stroke of the piston in the active cavity.

[0006] Furthermore, the thickness of the cushion block is 40 mm or 50 mm.

[0007] Furthermore, a mounting rod with a diameter smaller than that of the piston rod is provided at one end of the piston rod outside the active cavity. The mounting rod has a threaded area and a smooth area. The threaded area is arranged away from the piston rod and is used to be threadedly connected to the cone head of the uncoiler. The smooth area is located between the threaded area and the piston rod.

[0008] Furthermore, it includes at least one compensation pad, which has the same outer diameter as the piston rod and is used to be sleeved on the smooth area of ​​the mounting rod. One side of the compensation pad abuts against the uncoiler cone head, and the other side abuts against the step surface formed between the piston rod and the smooth area.

[0009] Furthermore, the thickness of the compensation pad is 40 mm or 50 mm.

[0010] After adopting the above scheme, the beneficial effects of the utility model are:

[0011] The utility model has at least one cushion block arranged in the movable cavity, sleeved on the outer periphery of the piston rod, and located on the movement path of the piston driving the piston rod to extend out of the movable cavity, so as to reduce the stroke of the piston in the movable cavity, thereby reducing the distance that the piston rod extends out of the movable cavity and reducing the transmission distance of the oil cylinder. During use, it is only necessary to install or remove the cushion block to change the stroke of the piston, thereby changing the transmission distance of the oil cylinder, so that the oil cylinder can be suitable for the uncoiler or coiler of different rolling mills, and there is no need to purchase a variety of oil cylinders of different specifications as spare, which reduces production costs and increases the applicability of a single oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the piston rod of the utility model without a cushion block being installed;

[0014] Figure 3 It is a schematic diagram of the extension of the piston rod of the utility model with a cushion block installed;

[0015] Figure 4 It is a schematic diagram of the extension of the piston rod of the utility model with two cushion blocks installed;

[0016] Figure 5 This is a connection diagram of the utility model and the uncoiler cone head when no compensation pad is installed;

[0017] Figure 6 This is a connection diagram of the utility model with a compensating pad and the uncoiler cone head;

[0018] Figure 7 It is a schematic diagram of the cushion block structure of the utility model;

[0019] Figure 8 It is a schematic diagram of the structure of the compensation pad of the utility model.

[0020] Description of labels:

[0021] 10. Cylinder body; 11. Active chamber; 20. Piston; 30. Piston rod; 31. Mounting rod; 311. Threaded area; 312. Smooth area; 40. Cushion block; 50. Compensating cushion block; 60. Unwinder cone head. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 8As shown, the utility model provides a variable-stroke oil cylinder for an uncoiler, comprising a cylinder body 10, a piston 20, a piston rod 30 and a cushion block 40. An active chamber 11 is provided in the cylinder body 10, and the piston 20 is slidably arranged in the active chamber 11. One end of the piston rod 30 is inserted into the active chamber 11 and fixed to the piston 20, and the piston 20 drives the piston rod 30 to extend or retract into the active chamber 11; at least one cushion block 40 is arranged in the active chamber 11, sleeved on the outer periphery of the piston rod 30, and located on the movement path of the piston 20 driving the piston rod 30 to extend into the active chamber 11, so as to reduce the stroke of the piston 20 in the active chamber 11. During use, it is only necessary to install or remove the cushion block 40 to change the stroke of the piston 20, thereby changing the transmission distance of the oil cylinder, so that the oil cylinder can be suitable for the uncoilers of different rolling mills, and there is no need to purchase a variety of oil cylinders of different specifications as spares, thereby reducing production costs and increasing the applicability of a single oil cylinder.

[0024] Specifically, the thickness of the pad 40 is 40mm or 50mm, and the pads 40 with thicknesses of 40mm and 50mm reduce the stroke of the piston 20 to different degrees. When in use, a pad 40 with a thickness of 40mm or a pad 40 with a thickness of 50mm can be installed, or multiple pads 40 with a thickness of 40mm or multiple pads 40 with a thickness of 50mm can be installed, or pads 40 with thicknesses of 40mm and 50mm can be used in combination, thereby changing the stroke of the piston 20. Specifically, the number and thickness of the pads 40 installed are determined according to the transmission distance of the cylinder required by the uncoiler or coiler, so that the cylinder can be suitable for different uncoilers, improving the applicability of the cylinder. The thickness of the pad 40 can also be made into other specifications, such as 30mm, 60mm, etc., which are not limited here, so as to reduce the stroke of the piston 20 in the active chamber 11, meet the different requirements of different uncoilers for the transmission distance of the cylinder, and be suitable for uncoilers of various specifications.

[0025] Further, the end of the piston rod 30 located outside the active chamber 11 is provided with a mounting rod 31 having a diameter smaller than that of the piston rod 30, and the mounting rod 31 has a threaded area 311 and a smooth area 312, the threaded area 311 is arranged away from the piston rod 30, and is used for being screwed with the uncoiler cone head 60, and the smooth area 312 is located between the threaded area 311 and the piston rod 30; further, it also includes at least one compensation pad 50, the compensation pad 50 has the same outer diameter as the piston rod 30, and is used for being sleeved on the smooth area 311 of the mounting rod 31 2, one side of the compensation pad 50 abuts against the uncoiler cone head 60, and the other side abuts against the step surface formed between the piston rod 30 and the smooth area 312; specifically, the compensation pad 50 can increase the length of the piston rod 30, so that the piston rod 30 can indirectly abut against the uncoiler cone head, thereby reducing the stress on the threaded teeth of the threaded area 311, and can make the piston rod 30 suitable for the uncoiler cone head 60 with different installation positions. If the installation position of the uncoiler cone head 60 is shallow, that is, the uncoiler cone head 60 is far from the piston rod 30, the piston rod 30 can be adjusted to the uncoiler cone head 60 at different installation positions. If the position is far from the piston rod 30, the distance from the uncoiler cone head 60 to the step surface formed by the piston rod 30 and the smooth area 312 is long, and multiple compensation pads 50 are installed in this distance, so that the two sides of the whole formed by the multiple compensation pads 50 are respectively against the step surface of the uncoiler cone head 60 and the piston rod 30, so that the piston rod 30 is indirectly against the uncoiler cone head 60, thereby first reducing the stress on the thread of the threaded area 311. If the installation position of the uncoiler cone head 60 is deep, that is, the uncoiler cone head 60 is 0 is closer to the piston rod 30, and the distance from the uncoiler cone head 60 to the step surface formed between the piston rod 30 and the smooth area 312 is shorter, so a small amount of compensation pads 50 are installed in this distance, so that the two sides of the whole formed by the small amount of compensation pads 50 are respectively against the step surfaces of the uncoiler cone head 60 and the piston rod 30, so that the piston rod 30 is indirectly against the uncoiler cone head 60, thereby first reducing the stress on the threaded teeth of the threaded area 311, and therefore it is suitable for the uncoiler cone head 60 in different installation positions.

[0026] Specifically, the thickness of the compensation pad 50 is 40 mm or 50 mm. The compensation pads 50 with thicknesses of 40 mm and 50 mm increase the distance of the piston rod 30 at different distances. When in use, a compensation pad 50 with a thickness of 40 mm or a compensation pad 50 with a thickness of 50 mm can be installed. It is also possible to install multiple compensation pads 50 with a thickness of 40 mm or multiple compensation pads 50 with a thickness of 50 mm. It is also possible to use a combination of compensation pads 50 with thicknesses of 40 mm and 50 mm, so as to be suitable for the installation positions of different uncoiler cone heads 60. The number and thickness of the installed compensation pads 50 are determined according to the distance between the installation position of the uncoiler cone head 60 and the piston rod 30. The thickness of the compensation pad 50 can also be made into other specifications, such as 30 mm, 60 mm, etc., which are not limited here, so as to meet the needs of uncoiler cone heads 60 with different installation positions.

[0027] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] Meanwhile, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A variable stroke oil cylinder for an unwinding machine, characterized in that: It includes a cylinder body, a piston, a piston rod and a cushion block. The cylinder body is provided with an active cavity. The piston is slidably arranged in the active cavity. One end of the piston rod is inserted into the active cavity and fixed to the piston. The piston drives the piston rod to extend or retract into the active cavity. At least one cushion block is arranged in the active cavity, sleeved on the outer periphery of the piston rod, and located on the movement path of the piston driving the piston rod to extend out of the active cavity, so as to reduce the stroke of the piston in the active cavity.

2. The variable stroke oil cylinder for an unwinding machine according to claim 1, characterized in that: The thickness of the cushion block is 40 mm or 50 mm.

3. The variable stroke oil cylinder for uncoiler according to claim 1, characterized in that: The end of the piston rod outside the active cavity is provided with a mounting rod with a diameter smaller than the piston rod. The mounting rod has a threaded area and a smooth area. The threaded area is arranged away from the piston rod and is used for threading with the uncoiler cone head. The smooth area is located between the threaded area and the piston rod.

4. The variable stroke oil cylinder for an unwinding machine according to claim 3, characterized in that: It also includes at least one compensation pad, which has the same outer diameter as the piston rod and is used to be sleeved on the smooth area of ​​the mounting rod. One side of the compensation pad abuts against the uncoiler cone head, and the other side abuts against the step surface formed between the piston rod and the smooth area.

5. The variable stroke oil cylinder for an unwinding machine according to claim 4, characterized in that: The thickness of the compensation pad is 40 mm or 50 mm.

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