Cast-rolling upper oil cylinder

Abstract

The utility model relates to a cast rolling upper oil cylinder which comprises a cylinder barrel, a piston rod, a piston and a fixing device, the cylinder barrel is vertically arranged, a cylinder cover is arranged at the upper end of the cylinder barrel, the piston rod is arranged on the inner circumference of the cylinder barrel and the cylinder cover and can move up and down relative to the cylinder barrel, the piston is arranged on the tail side of the lower end of the piston rod, and a first sealing guide device is arranged on the periphery of the piston rod. A second sealing guide device is arranged on the inner circumference of the cylinder cover and used for guiding the piston rod and sealing the cylinder cover and the piston rod, the fixing device comprises an installation plate installed at the upper end of the cylinder barrel and an installation part located on the periphery of the cylinder barrel, the piston rod penetrates through the middle of the installation plate, and the installation part is used for being connected with an external mechanism to fix the cylinder barrel. Through the unique structural design, the optimized sealing guide device, the reasonable fixing mode and the like, high-precision control, stable pressure output and good plate shape control are achieved, meanwhile, the aluminum strip blank casting and rolling device has the advantages of being convenient to install and maintain and long in service life, and the aluminum strip blank casting and rolling quality and the production efficiency are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic cylinder, concretely relates to a cast rolling press oil cylinder. BACKGROUND

[0002] The cast rolling press oil cylinder is a key component of the aluminum strip blank cast rolling machine hydraulic press-on system, mainly used for accurately controlling the rolling force in the aluminum strip blank cast rolling process to ensure the plate shape and thickness precision of the cast rolling slab and ensure the stable progress of the cast rolling production, playing a crucial role in improving the aluminum strip blank product quality. Its specific purposes are as follows: applying stable rolling force, the cast rolling press oil cylinder applies stable rolling force in the cast rolling production to balance the reaction force of the aluminum slab on the cast rolling roll; controlling constant roll gap, the pressure of the cast rolling press oil cylinder can be adjusted to accurately control the roll gap size between the cast rolling rolls; realizing plate shape control, the accurate control of the cast rolling press oil cylinder on the rolling force and the roll gap can effectively avoid the occurrence of adverse plate shapes such as wavy shape and buckling of the cast rolling slab, improve the quality of the cast rolling slab, and meet the requirements of subsequent processing and use.

[0003] The traditional cast rolling press oil cylinder has many problems in actual application, which seriously restricts the development of the aluminum strip blank production industry.

[0004] Precision control problem: the traditional cast rolling press oil cylinder has great defects in precision control. Its sealing and guiding structure is simple, and it cannot effectively reduce the friction and shaking of the piston and piston rod during movement, resulting in insufficient precision when controlling the roll gap of the cast rolling roll. This makes the thickness deviation of the cast rolling slab larger, which cannot meet the requirements of high-end products on thickness precision. When producing high-precision aluminum strips for electronic equipment, the uneven thickness of the aluminum strip due to inaccurate roll gap control affects the performance and reliability of the electronic equipment.

[0005] Pressure stability problem: the structure design and sealing performance of the traditional oil cylinder are poor, and the cylinder barrel is prone to deformation when bearing high pressure during the cast rolling process, and hydraulic oil leakage occurs frequently. This leads to unstable internal pressure of the oil cylinder, which cannot continuously output stable rolling force to balance the reaction force of the aluminum slab on the cast rolling roll. In the cast rolling process, pressure fluctuations will cause uneven thickness and poor surface quality of the aluminum slab, reducing the product qualification rate and market competitiveness.

[0006] Plate shape control problem: due to the insufficient control precision of the traditional oil cylinder on the rolling force and the roll gap, it is difficult to effectively avoid the occurrence of adverse plate shapes such as wavy shape and buckling of the cast rolling slab. The cast rolling slab with adverse plate shape needs to be additionally corrected in subsequent processing, increasing the production cost and processing difficulty. Moreover, even after correction, it is difficult to meet the strict requirements of high-end products on plate shape, limiting the application of aluminum strip blank in high-end fields.

[0007] Installation and maintenance inconvenience: the fixing mode of the traditional cast-rolling press oil cylinder is complex and unstable, the installation process is tedious, and a large amount of time and manpower is consumed. During the operation of the equipment, the oil cylinder is prone to looseness, which affects its normal work. In addition, the internal structure design of the traditional oil cylinder is not conducive to maintenance and maintenance, and once a fault occurs, the maintenance difficulty is high, the cost is high, the equipment downtime is long, and the production efficiency is seriously affected.

[0008] Structural reliability and service life problems: the piston and piston rod of the traditional oil cylinder are mostly split structure, the connection part is easy to leak and loosen, which reduces the overall structural strength of the oil cylinder. At the same time, the piston rod lacks effective protection measures during work and is easy to be damaged by impact, resulting in short service life of the oil cylinder. Frequent replacement of oil cylinders not only increases production cost, but also affects the continuity and stability of production. Practical new type

[0009] To solve the problems raised in the above background art, the utility model provides a cast-rolling press oil cylinder, aiming at the technical problems of poor precision control, unstable pressure, difficult plate shape control, inconvenient installation and maintenance, low structural reliability and short service life of the traditional cast-rolling press oil cylinder, through unique structure design, optimized sealing guide device, reasonable fixing mode, etc., high-precision control, stable pressure output and good plate shape control are realized, and the cast-rolling quality and production efficiency of aluminum strip blank are effectively improved.

[0010] To achieve the above purpose, the utility model provides the following technical scheme: a cast-rolling press oil cylinder, comprising a cylinder, a piston rod, a piston and a fixing device, the cylinder is vertically arranged, the upper end of the cylinder is provided with a cylinder cover, the piston rod is arranged in the inner periphery of the cylinder and the cylinder cover and can move up and down relative to the cylinder, the piston is arranged at the lower end of the piston rod, the outer periphery of the piston is provided with a first sealing guide device for sealing between the piston and the cylinder and guiding the piston, the inner periphery of the cylinder cover is provided with a second sealing guide device for guiding the piston rod and sealing between the cylinder cover and the piston rod, the fixing device comprises a mounting plate mounted on the upper end of the cylinder and a mounting part located on the outer periphery of the cylinder, the piston rod is arranged in the middle part of the mounting plate, and the mounting part is used for connecting and fixing the cylinder with an external mechanism.

[0011] As a further elaboration of the technical scheme:

[0012] Preferably, the outer periphery of the cylinder is in the shape of an octagonal prism with an open upper end, and the inner periphery is in the shape of a cylinder with an open upper end.

[0013] Preferably, the cylinder cover comprises a first structure part and a second structure part, the shape of the first structure part matches the outer periphery of the cylinder, and the first structure part is movably connected to the upper end of the cylinder through a plurality of first screws, the second structure part extends to the inner periphery of the cylinder and is attached to the inner periphery of the cylinder.

[0014] Preferably, the first sealing guide device comprises, from top to bottom, a first piston sealing ring arranged on the outer periphery of the piston, a piston bidirectional sealing guide belt and a second piston sealing ring, and the second sealing guide device comprises, from top to bottom, a piston rod sealing ring arranged on the inner periphery of the cylinder cover, a first piston rod support ring, a first piston rod guide belt, a second piston rod support ring and a second piston rod guide belt, and the upper end of the piston rod sealing ring is further provided with a dustproof ring.

[0015] Preferably, an O-ring is arranged between the outer periphery of the second structure part of the cylinder cover and the cylinder barrel for sealing the space between the outer periphery of the cylinder cover and the cylinder barrel.

[0016] Preferably, the mounting plate is matched with the shape of the outer periphery of the cylinder barrel, two connecting buckles are arranged between the mounting plate and the cylinder barrel, and the two connecting buckles are oppositely arranged for fixing the mounting plate to the upper end of the cylinder barrel.

[0017] Preferably, the mounting part comprises four mounting parts, and the four mounting parts are oppositely arranged on the outer periphery of the upper end of the middle part of the cylinder barrel.

[0018] Preferably, two oil holes are arranged on the cylinder barrel between the two mounting parts of one group, and the two oil holes are in communication with the inner periphery of the cylinder barrel, one of the two oil holes is in communication with the bottom of the cylinder barrel, and the other oil hole is in communication with the inner periphery of the cylinder barrel at the lower end of the cylinder cover, so that the hydraulic oil is in and out of the inner periphery of the cylinder barrel, and the piston rod moves up and down relative to the cylinder barrel.

[0019] Preferably, the piston and the piston rod are integrated, the upper end of the piston rod is provided with a protection part, the protection part is fixed to the upper end of the piston rod by a plurality of second screws, and the protection part is used for preventing the piston rod from being damaged.

[0020] Preferably, the height of the cylinder barrel is 480.0mm-490.0mm, the diameter of the inner periphery of the cylinder barrel is 625.0mm-635.0mm, the diameter of the piston rod is 475.0mm-485.0mm, the height of the piston is 115.0mm-125.0mm, the height of the cylinder cover is 110.0mm-120.0mm, the height from the hole center of the oil hole in communication with the bottom of the inner periphery of the cylinder barrel to the lower end of the cylinder barrel is 95.0mm-105.0mm, and the height between the hole centers of the two oil holes is 260.0mm-270.0mm.

[0021] Compared with the prior art, the utility model has the advantages of:

[0022] First, the utility model has the ability of precision control, and the cast-rolled press oil cylinder realizes the high precision control level through the sealing guide device and the accurate size parameter. The multiple sealing and guiding parts in the first sealing guide device and the second sealing guide device work cooperatively, effectively reducing the friction and shaking of the piston and the piston rod during movement. In terms of controlling the constant roll gap, the oil cylinder pressure can be accurately adjusted, ensuring that the size deviation of the roll gap between the cast-rolled rollers is extremely small. When producing high-precision aluminum strip blanks, the roll gap can be controlled within a very small tolerance range, ensuring the thickness precision of the cast-rolled slab. At the same time, the accurate size parameter makes the parts of the oil cylinder closely cooperate during operation, further improving the precision control ability, which helps to produce aluminum strip blanks with uniform thickness and meets the stringent requirements of high-end products on thickness precision.

[0023] Second, the utility model has stable pressure output performance. The combination of the outer periphery of the octagonal cylinder and the inner periphery of the cylindrical cylinder enhances the structural strength of the cylinder, making it less likely to deform under high pressure and maintaining the stable space of the internal hydraulic oil. The multiple sealing structures such as the bidirectional sealing guide belt of the piston and the O-ring effectively prevent the leakage of hydraulic oil, ensuring the stability of the internal pressure of the oil cylinder. In terms of applying stable rolling force, no matter how the reaction force of the aluminum slab on the cast-rolled roller changes during the cast-rolling process, the oil cylinder can continuously output stable rolling force to balance the reaction force, ensuring the smooth progress of the cast-rolling process and avoiding quality problems of the aluminum slab caused by pressure fluctuations.

[0024] Third, the utility model effectively optimizes the plate shape control effect. Through accurate control of the rolling force and the roll gap, the accurate rolling force and the constant roll gap can effectively avoid the occurrence of wave-shaped, buckling and other adverse plate shapes in the cast-rolled plate during the cast-rolling process. This not only improves the quality of the cast-rolled plate, but also reduces the waste rate in subsequent processing, meeting the strict requirements of high-end manufacturing industry on aluminum plate quality.

[0025] Fourth, the utility model has the characteristics of convenient installation and maintenance. The new design of the fixing device makes the oil cylinder easy to install and maintain. The installation plate is fixed with the cylinder through the connecting buckle, which is simple and fast to operate and can quickly complete the installation of the oil cylinder on the casting and rolling machine. The reasonable layout of the four installation parts enhances the stability of the connection between the oil cylinder and the external mechanism, reducing the shaking during work. At the same time, this design facilitates the maintenance and repair of the internal parts of the oil cylinder, reduces the downtime and maintenance cost of the equipment, and improves the production efficiency.

[0026] Fifth, the utility model has reliable structure and long service life, the integrated structure of the piston and the piston rod and the protection portion on the upper end of the piston rod greatly improve the structural reliability and service life of the oil cylinder. The integrated structure reduces the leakage risk of the connecting portion and enhances the overall strength. The protection portion can effectively prevent the piston rod from being damaged by impact during work, prolong the service life of the oil cylinder, and reduce the cost increase and production interruption problems caused by frequent replacement of the oil cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0028] Figure 1 It is the first angle overall structure schematic view of the utility model;

[0029] Figure 2 It is the second angle overhead structure schematic view of the utility model;

[0030] Figure 3 It is Figure 2 It is the A-A direction section structure schematic view in the middle;

[0031] Figure 4 It is Figure 3 It is the E part enlarged structure schematic view in the middle;

[0032] Figure 5 It is Figure 2 It is the B direction front view structure schematic view in the middle;

[0033] Figure 6 It is Figure 2 It is the C direction front view structure schematic view in the middle;

[0034] Figure 7 It is the second angle overall structure schematic view of the utility model.

[0035] In the drawing: 1, cylinder barrel;2, piston rod;3, piston;4, cylinder cover;5, first structure portion;6, second structure portion;7, first screw;8, first piston sealing ring;9, piston bidirectional sealing guide belt;10, second piston sealing ring;11, piston rod sealing ring;12, first piston rod support ring;13, first piston rod guide belt;14, second piston rod support ring;15, second piston rod guide belt;16, dustproof ring;17, O ring;18, mounting plate;19, connecting buckle;20, mounting portion;21, oil hole;22, protection portion;23, second screw. DETAILED DESCRIPTION

[0036] 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.

[0037] like Figures 1-7 As shown, this utility model is a cast-rolled pressing cylinder, including a cylinder barrel 1, a piston rod 2, a piston 3, and a fixing device. The cylinder barrel 1 is vertically arranged, and a cylinder cover 4 is provided at its upper end. The piston rod 2 is arranged on the inner circumference of the cylinder barrel 1 and the cylinder cover 4, and can move up and down relative to the cylinder barrel 1. The piston 3 is arranged on the lower end of the piston rod 2, and a first sealing guide device is provided on its outer circumference for sealing between the piston 3 and the cylinder barrel 1 and guiding the piston 3. A second sealing guide device is provided on the inner circumference of the cylinder cover 4 for guiding the piston rod 2 and sealing between the cylinder cover 4 and the piston rod 2. The fixing device includes a mounting plate 18 installed on the upper end of the cylinder barrel 1 and a mounting part 20 located on the outer circumference of the cylinder barrel 1. The piston rod 2 passes through the middle of the mounting plate 18. The mounting part 20 is used to connect and fix the cylinder barrel 1 to an external mechanism.

[0038] like Figure 1 , Figure 2 , Figure 7 As shown, the outer circumference of the cylinder 1 is an octagonal column with an open top, and its inner circumference is a cylinder with an open top.

[0039] like Figures 3-4 As shown, the cylinder head 4 includes a first structural part 5 and a second structural part 6. The shape of the first structural part 5 matches the outer periphery of the cylinder 1 and is movably connected to the upper end of the cylinder 1 by a plurality of first screws 7. The second structural part 6 extends toward the inner periphery of the cylinder 1 and fits against the inner periphery of the cylinder 1.

[0040] like Figures 3-4 As shown, the first sealing guide device, from top to bottom, includes a first piston sealing ring 8, a piston bidirectional sealing guide strip 9, and a second piston sealing ring 10 disposed on the outer periphery of the piston 3. The second sealing guide device, from top to bottom, includes a piston rod sealing ring 11, a first piston rod support ring 12, a first piston rod guide strip 13, a second piston rod support ring 14, and a second piston rod guide strip 15 disposed on the inner periphery of the cylinder head 4. A dustproof ring 16 is also provided at the upper end of the piston rod sealing ring 11. An O-ring 17 is provided between the outer periphery of the second structural part 6 of the cylinder head 4 and the cylinder barrel 1 for sealing the outer periphery of the cylinder head 4 and the cylinder barrel 1.

[0041] like Figures 1-3 , Figures 5-7As shown, the mounting plate 18 is shaped to match the outer periphery of the cylinder barrel 1, and two connecting buckles 19 are arranged between the mounting plate 18 and the cylinder barrel 1, and the two connecting buckles 19 are oppositely arranged to fix the mounting plate 18 to the upper end of the cylinder barrel 1. Further, the mounting part 20 includes four, and the four mounting parts 20 are oppositely arranged on the outer periphery of the upper end of the middle part of the cylinder barrel 1 adjacent to the two connecting buckles 19 in the counterclockwise direction.

[0042] As shown, the mounting plate 18 is shaped to match the outer periphery of the cylinder barrel 1, and two connecting buckles 19 are arranged between the mounting plate 18 and the cylinder barrel 1, and the two connecting buckles 19 are oppositely arranged to fix the mounting plate 18 to the upper end of the cylinder barrel 1. Further, the mounting part 20 includes four, and the four mounting parts 20 are oppositely arranged on the outer periphery of the upper end of the middle part of the cylinder barrel 1 adjacent to the two connecting buckles 19 in the counterclockwise direction. Figure 5 As shown, two oil holes 21 are arranged on the cylinder barrel 1 between the two mounting parts 20 of one group in an up-down distribution, and the two oil holes 21 are in communication with the inner periphery of the cylinder barrel 1, one of the two oil holes 21 is in communication with the inner periphery of the cylinder bottom of the cylinder barrel 1, and the other oil hole 21 is in communication with the inner periphery of the lower end of the cylinder cover 4 of the cylinder barrel 1, and the two oil holes 21 are matched to enter and exit hydraulic oil in the inner periphery of the cylinder barrel 1, so that the piston rod 2 moves up and down relative to the cylinder barrel 1.

[0043] Further, the piston 3 and the piston rod 2 are an integral structure, and the upper end of the piston rod 2 is provided with a protection part 22, and the protection part 22 is fixed to the upper end of the piston rod 2 by a plurality of second screws 23, which is used to prevent the piston rod 2 from being damaged.

[0044] Further, the height of the cylinder barrel 1 is 480.0mm-490.0mm, the diameter of the inner periphery of the cylinder barrel 1 is 625.0mm-635.0mm, the diameter of the piston rod 2 is 475.0mm-485.0mm, the height of the piston 3 is 115.0mm-125.0mm, the height of the cylinder cover 4 is 110.0mm-120.0mm, the height from the hole center of the oil hole 21 in communication with the inner periphery of the cylinder bottom to the lower end of the cylinder barrel 1 is 95.0mm-105.0mm, and the height between the hole centers of the two oil holes 21 is 260.0mm-270.0mm. In this embodiment, the height of the cylinder barrel 1 is 485.0mm, the diameter of the inner periphery of the cylinder barrel 1 is 630.0mm, the diameter of the piston rod 2 is 480.0mm, the height of the piston 3 is 119.0mm, the height of the cylinder cover 4 is 115.0mm, the height from the hole center of the oil hole 21 in communication with the inner periphery of the cylinder bottom to the lower end of the cylinder barrel 1 is 100.0mm, and the height between the hole centers of the two oil holes 21 is 265.0mm.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0046] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A casting and rolling pressing cylinder, characterized in that: The device includes a cylinder, a piston rod, a piston, and a fixing device. The cylinder is vertically arranged with a cylinder head at its upper end. The piston rod is located on the inner circumference of the cylinder and cylinder head and can move up and down relative to the cylinder. The piston is located at the lower end of the piston rod and has a first sealing guide device on its outer circumference for sealing between the piston and the cylinder and guiding the piston. The inner circumference of the cylinder head has a second sealing guide device for guiding the piston rod and sealing between the cylinder head and the piston rod. The fixing device includes a mounting plate installed on the upper end of the cylinder and a mounting part located on the outer circumference of the cylinder. The piston rod passes through the middle of the mounting plate. The mounting part is used to connect and fix the cylinder to an external mechanism.

2. The casting and rolling pressing cylinder according to claim 1, characterized in that: The outer circumference of the cylinder is an octagonal column with an open top, and its inner circumference is a cylinder with an open top.

3. The casting and rolling pressing cylinder according to claim 2, characterized in that: The cylinder head includes a first structural part and a second structural part. The shape of the first structural part matches the outer circumference of the cylinder and is movably connected to the upper end of the cylinder by a plurality of first screws. The second structural part extends into the inner circumference of the cylinder and fits against the inner circumference of the cylinder.

4. The casting and rolling pressing cylinder according to claim 3, characterized in that: The first sealing guide device includes, from top to bottom, a first piston sealing ring, a piston bidirectional sealing guide strip, and a second piston sealing ring disposed on the outer periphery of the piston. The second sealing guide device includes, from top to bottom, a piston rod sealing ring, a first piston rod support ring, a first piston rod guide strip, a second piston rod support ring, and a second piston rod guide strip disposed on the inner periphery of the cylinder head. A dustproof ring is also provided at the upper end of the piston rod sealing ring.

5. The casting and rolling pressing cylinder according to claim 4, characterized in that: An O-ring is provided between the outer periphery of the second structural part of the cylinder head and the cylinder barrel to seal the outer periphery of the cylinder head and the cylinder barrel.

6. The casting and rolling pressing cylinder according to claim 5, characterized in that: The shape of the mounting plate matches the outer circumference of the cylinder. Two connecting buckles are provided between the mounting plate and the cylinder, and the two connecting buckles are arranged opposite to each other to fix the mounting plate to the upper end of the cylinder.

7. The casting and rolling pressing cylinder according to claim 6, characterized in that: The mounting part includes four parts, which are matched in pairs and respectively disposed on the outer periphery of the upper middle part of the cylinder barrel that are adjacent to each other in a counterclockwise direction between the two connecting buckles.

8. The casting and rolling pressing cylinder according to claim 7, characterized in that: It also includes two oil holes, which are distributed vertically on the cylinder between two mounting parts in one group. Both oil holes are connected to the inner circumference of the cylinder. One oil hole is connected to the bottom of the cylinder on the inner circumference of the cylinder, and the other oil hole is connected to the inner circumference of the cylinder at the lower end of the cylinder head. The two oil holes cooperate to allow hydraulic oil to enter and exit the inner circumference of the cylinder, so that the piston rod moves up and down relative to the cylinder.

9. The casting and rolling pressing cylinder according to claim 8, characterized in that: The piston and piston rod are an integral structure. A protective part is provided at the upper end of the piston rod. The protective part is fixed to the upper end of the piston rod by multiple second screws to prevent the piston rod from breaking.

10. The casting and rolling pressing cylinder according to any one of claims 8 to 9, characterized in that: The cylinder has a vertical height of 480.0mm to 490.0mm and an inner diameter of 625.0mm to 635.0mm. The piston rod has a diameter of 475.0mm to 485.0mm and a vertical height of 115.0mm to 125.0mm. The cylinder head has a vertical height of 110.0mm to 120.0mm. The center of the oil hole connected to the bottom of the cylinder is 95.0mm to 105.0mm above the lower end of the cylinder, and the distance between the centers of two oil holes is 260.0mm to 270.0mm.

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