Double cylinder synchronous control mechanism for push plate

Abstract

The utility model relates to a double-cylinder synchronous control mechanism for a push plate, which is used in the coiling and unloading process of a hot rolling continuous annealing unit. The utility model includes a hydraulic cylinder on the push plate, a hydraulic cylinder under the push plate, a coiling machine reducer chassis, a wire-drawing absolute value encoder 1, an encoder wire rope hook 1, a hook fixing bolt 1, a wire-drawing absolute value encoder 2, an encoder wire rope hook 2 and a hook fixing bolt 2. The hydraulic cylinder on the push plate, the hydraulic cylinder under the push plate, the wire-drawing absolute value encoder 1 and the wire-drawing absolute value encoder 2 are installed on the upper and lower sides of the quiet area of ​​the coiling machine reducer chassis; the hook fixing bolt 1 and the hook fixing bolt 2 are installed on both sides of the push plate, and the encoder wire rope hook 1 and the encoder wire rope hook 2 are respectively connected to the hook fixing bolt 1 and the hook fixing bolt 2. The utility model uses a wire-drawing encoder for real-time monitoring and synchronous control up and down, which greatly improves the coil unloading capacity, increases the production capacity of special steel and thick materials, and meets the use requirements.

Description

Technical Field

[0001] The utility model relates to a structure, in particular to a double-cylinder synchronous control mechanism used on a push plate, which is used in the coiling and unloading process of a hot rolling annealing unit. Background Art

[0002] The production trend of thick steel and special steel is increasing, and the coiler is difficult to unload, resulting in shutdown and speed reduction, which directly affects product quality and output. The current method is double-cylinder control through a diverter, but the control accuracy is difficult to guarantee, and unloading is difficult, which seriously affects production efficiency.

[0003] Figure 1 The existing push plate structure includes an upper hydraulic cylinder 1-1, a lower hydraulic cylinder 1-2, a chassis 1-3, an original position 1-4, a working position 1-5 and a core shaft 1-6; the control of the upper and lower cylinders is output to the upper and lower cylinders by a common reversing valve through a diverter, and there is no displacement sensor to feedback the actual positions of the upper and lower cylinders, so closed-loop control cannot be achieved. Due to the inconsistency of the roll shape and the force of the upper and lower hydraulic cylinders, real-time synchronization of the upper and lower hydraulic cylinders cannot be achieved, and normal production of thick material (10mm-16mm) rolls cannot be met, which increases the difficulty of unloading the rolls for production personnel and restricts production development.

[0004] Therefore, it is particularly necessary to provide a device with a reasonable structural design, which can realize real-time synchronization of upper and lower hydraulic cylinders, improve the unloading capacity, and improve production efficiency. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a double-cylinder synchronous control mechanism for a push plate which has a reasonable structural design, is safe and reliable, and can realize real-time synchronization of the upper and lower hydraulic cylinders through real-time monitoring by a pull-wire encoder, thereby solving the problem that thick-gauge and special steel are difficult to unload.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: the double-cylinder synchronous control mechanism for the push plate comprises a hydraulic cylinder on the push plate, a hydraulic cylinder under the push plate and a reducer chassis of a curling machine, and is characterized in that it also comprises a pull-wire absolute value encoder 1, an encoder wire rope 1, an encoder wire rope hook 1, a hook fixing bolt 1, a pull-wire absolute value encoder 2, an encoder wire rope 2, an encoder wire rope hook 2 and a hook fixing bolt 2, the hydraulic cylinder on the push plate, the hydraulic cylinder under the push plate, the pull-wire absolute value encoder 1 and the pull-wire absolute value encoder 2 are installed on the upper and lower sides of the quiet area of ​​the reducer chassis of the curling machine; the hook fixing bolt 1 and the hook fixing bolt 2 are installed on both sides of the push plate, and the encoder wire rope hook 1 and the encoder wire rope hook 2 are respectively connected to the hook fixing bolt 1 and the hook fixing bolt 2; the encoder wire rope 1 is arranged between the pull-wire absolute value encoder 1 and the encoder wire rope hook 1; the encoder wire rope 2 is arranged between the pull-wire absolute value encoder 2 and the encoder wire rope hook 2.

[0007] Preferably, the encoder wire rope 1 and the encoder wire rope 2 of the utility model are parallel to each other, and the encoder wire rope 1 and the encoder wire rope 2 are perpendicular to the pull-wire absolute value encoder 1 and the pull-wire absolute value encoder 2 respectively.

[0008] Preferably, the pull-wire absolute value encoder 1, encoder wire rope 1, encoder wire rope hook 1, and hook fixing bolt 1 of the utility model are arranged on the push plate; the pull-wire absolute value encoder 2, encoder wire rope 2, encoder wire rope hook 2, and hook fixing bolt 2 are arranged under the push plate.

[0009] Preferably, the hook fixing bolt 1 and the hook fixing bolt 2 of the utility model have the same structure, both of which adopt M6×30mm hexagonal bolts and an M6 nut, and are welded to the upper and lower sides of the push plate.

[0010] Compared with the prior art, the utility model has the following advantages and effects: the overall structural design is reasonable, safe and reliable, and the problem of difficult unloading of thick materials and special steels is completely solved. The current position is monitored in real time by installing a pull-wire absolute encoder on the two hydraulic cylinders, and the position feedback signal is given to Siemens PLC400. The closed-loop control output signal is given to the corresponding proportional control valve and proportional pressure reducing valve to control the corresponding hydraulic cylinder; through real-time position monitoring and synchronous control of the upper and lower parts, the unloading capacity is greatly improved, and the production capacity of special steel and thick materials is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a push plate structure and control schematic diagram of the prior art.

[0012] In the figure: upper hydraulic cylinder 1-1, lower hydraulic cylinder 1-2, chassis 1-3, original position 1-4, working position 1-5, mandrel 1-6.

[0013] Figure 2 It is a schematic diagram of the push plate structure and control of an embodiment of the utility model.

[0014] In the figure: hydraulic cylinder 1 on the push plate, hydraulic cylinder 2 under the push plate, a pull-wire absolute encoder 3, an encoder wire rope 4, an encoder wire rope hook 5, a hook fixing bolt 6, a pull-wire absolute encoder 2 7, an encoder wire rope 2 8, an encoder wire rope hook 2 9, a hook fixing bolt 2 10, a curling machine reducer chassis 11, a push plate original position 12, a push plate working position 13, and a curling machine core shaft 14. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0016] Example

[0017] See also Figure 2 The double-cylinder synchronous control mechanism on the push plate in this embodiment includes a hydraulic cylinder 1 on the push plate, a hydraulic cylinder 2 under the push plate, a wire-drawing absolute value encoder 3, an encoder wire rope 4, an encoder wire rope hook 5, a hook fixing bolt 6, a wire-drawing absolute value encoder 2 7, an encoder wire rope 2 8, an encoder wire rope hook 2 9, a hook fixing bolt 2 10, a curling machine reducer chassis 11, a push plate original position 12, a push plate working position 13 and a curling machine core shaft 14; the hydraulic cylinder 1 on the push plate, the hydraulic cylinder 2 under the push plate, the wire-drawing absolute value encoder 3 and the wire-drawing absolute value encoder 2 7 are installed on the upper and lower sides of the quiet area of ​​the curling machine reducer chassis 11.

[0018] The hook fixing bolt 1 6 and the hook fixing bolt 2 10 in this embodiment are installed on both sides of the push plate, and the encoder wire rope hook 1 5 and the encoder wire rope hook 2 9 are connected to the hook fixing bolt 1 6 and the hook fixing bolt 2 10 respectively.

[0019] The encoder wire rope 1 4 in this embodiment is arranged between the pull-wire absolute value encoder 1 3 and the encoder wire rope hook 1 5 ; the encoder wire rope 2 8 is arranged between the pull-wire absolute value encoder 2 7 and the encoder wire rope hook 2 9 .

[0020] In this embodiment, a pull-wire absolute encoder 1 3, an encoder wire rope 1 4, an encoder wire rope hook 1 5, and a hook fixing bolt 1 6 are arranged on the push plate; a pull-wire absolute encoder 2 7, an encoder wire rope 2 8, an encoder wire rope hook 2 9, and a hook fixing bolt 2 10 are arranged under the push plate.

[0021] In this embodiment, the wire-drawing absolute value encoder 1 3 and the wire-drawing absolute value encoder 2 7 are of the same model, which is the Kubler D8.4B1.0300.6324.G123.9083 wire-drawing absolute value encoder.

[0022] In this embodiment, the upper push plate hydraulic cylinder 1 and the lower push plate hydraulic cylinder 2 are of the same model, namely, UY1006Z125-90-2100, with a stroke of 1700MM.

[0023] In this embodiment, the hook fixing bolt 1 6 and the hook fixing bolt 2 10 have the same structure, and are made of an M6×30mm hexagonal bolt and an M6 nut, which are cured with glue and leave a 5mm buckle gap, and are welded to the upper and lower sides of the push plate.

[0024] In this embodiment, the encoder wire rope hook 1 5 and the encoder wire rope hook 2 9 are installed in the hook fixing bolt buckles on both sides. When the push plate is in the push plate working position 13, the encoder wire rope 1 4 and the encoder wire rope 2 8 are parallel to each other and perpendicular to the pull-wire absolute value encoder 1 3 and the pull-wire absolute value encoder 2 7.

[0025] The present embodiment is composed of a hydraulic cylinder, a wire-drawing absolute value encoder, a PLC, and a proportional valve. The upper hydraulic cylinder 1 and the lower hydraulic cylinder 2 of the push plate are connected to the reducer chassis 11 of the curling machine, and a wire-drawing absolute value encoder 1 3 and a wire-drawing absolute value encoder 2 7 are installed on the static side. A hook fixing bolt 1 6 and a hook fixing bolt 2 10 are welded on the upper and lower sides of the push plate, respectively. The encoder wire rope hook 1 5 and the encoder wire rope hook 2 9 are respectively inserted into the hook fixing bolt slots. The hydraulic cylinder 1 and the lower hydraulic cylinder 2 of the push plate are pushed through the coordinated control of the proportional regulating valve and the proportional pressure reducing valve. The push plate moves from the original position 12 of the push plate to the working position 13 of the push plate. During this period, the encoder wire rope 1 4 and the encoder wire rope 2 8 of the inner code disk of the wire-drawing absolute value encoder 1 3 and the wire-drawing absolute value encoder 2 7 are mutually horizontal. The data of the wire-drawing absolute value encoder 1 3 is used as the reference calculation basis, and communication is established with the 400PLC through Profibus-dp to form a measurement system.

[0026] The present embodiment is used in the coiling and unloading process of the hot rolling annealing unit, and is used to improve the ability of the push plate to push thick-specification steel coils (10mm-16mm) and special steel coils. By installing a wire-drawing absolute value encoder 1 3 and a wire-drawing absolute value encoder 2 7 at the corresponding positions of the hydraulic cylinder 1 on the push plate and the hydraulic cylinder 2 under the push plate, the control hydraulic system is changed from the original ordinary reversing valve to a proportional pressure reducing valve and a proportional regulating valve with higher precision for synchronous control; closed-loop control is achieved through position feedback of the hydraulic cylinder 1 on the push plate and the hydraulic cylinder 2 under the push plate; the problem of thick-specification and special steel being difficult to unload is completely solved, and the wire-drawing encoder is used for real-time monitoring and synchronous control up and down to greatly improve the unloading capacity and the production capacity of special steel and thick materials.

[0027] The device of this embodiment is composed of a hydraulic cylinder, a pull-wire absolute encoder, a PLC, and a proportional valve. By adding the SM338 module, the actual positions of the upper and lower cylinders are measured in real time, and by adding the SM332 module, the proportional control valve and the proportional pressure reducing valve are precisely controlled. The real-time position of the lower cylinder is used as a reference to detect the actual deviation values ​​of the upper and lower cylinders during the pushing process in real time, and the upper cylinder is dynamically adjusted by the proportional pressure reducing valve and the proportional control valve to achieve synchronous control of the upper and lower hydraulic cylinders.

[0028] Through the above description, those skilled in the art can already implement it.

[0029] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A double-cylinder synchronous control mechanism for a push plate, comprising a push plate upper hydraulic cylinder (1), a push plate lower hydraulic cylinder (2) and a coiling machine reducer chassis (11), characterized in that: It also includes a wire-drawing absolute value encoder (3), an encoder wire rope (4), an encoder wire rope hook (5), a hook fixing bolt (6), a wire-drawing absolute value encoder (7), an encoder wire rope (8), an encoder wire rope hook (9) and a hook fixing bolt (10). The push plate upper hydraulic cylinder (1), the push plate lower hydraulic cylinder (2), the wire-drawing absolute value encoder (3) and the wire-drawing absolute value encoder (7) are installed on the static area of ​​the reducer chassis (11) of the curling machine. The lower side; hook fixing bolt 1 (6) and hook fixing bolt 2 (10) are installed on both sides of the push plate, and the encoder wire rope hook 1 (5) and the encoder wire rope hook 2 (9) are respectively connected to the hook fixing bolt 1 (6) and the hook fixing bolt 2 (10); the encoder wire rope 1 (4) is arranged between the pull-wire type absolute value encoder 1 (3) and the encoder wire rope hook 1 (5); the encoder wire rope 2 (8) is arranged between the pull-wire type absolute value encoder 2 (7) and the encoder wire rope hook 2 (9).

2. The double-cylinder synchronous control mechanism for a push plate according to claim 1, characterized in that: The encoder steel wire rope 1 (4) and the encoder steel wire rope 2 (8) are parallel to each other, and the encoder steel wire rope 1 (4) and the encoder steel wire rope 2 (8) are perpendicular to the pull-wire type absolute value encoder 1 (3) and the pull-wire type absolute value encoder 2 (7) respectively.

3. The double-cylinder synchronous control mechanism for a push plate according to claim 1, characterized in that: The pull-wire absolute value encoder 1 (3), encoder wire rope 1 (4), encoder wire rope hook 1 (5), and hook fixing bolt 1 (6) are arranged on the push plate; the pull-wire absolute value encoder 2 (7), encoder wire rope 2 (8), encoder wire rope hook 2 (9), and hook fixing bolt 2 (10) are arranged under the push plate.

4. The double-cylinder synchronous control mechanism for a push plate according to claim 1, characterized in that: The hook fixing bolt 1 (6) and the hook fixing bolt 2 (10) have the same structure, both using an M6×30mm hexagonal bolt and an M6 nut, welded to the upper and lower sides of the push plate.

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