A support and positioning device for manufacturing curved plate

Abstract

The present invention belongs to the technical field related to the processing of shipboard plates with complex curvature, and discloses a support and positioning device for the manufacture of curved plates. The positioning device includes a transverse guide rail, a longitudinal guide rail and a support unit, and the transverse guide rail and the longitudinal guide rail are respectively used to adjust the transverse and longitudinal positions of the support unit to adapt to the size of the curved plate to be supported; there are multiple support units, and the support unit is used to contact the curved plate to be supported to support the curved plate; the support unit includes a base, a hydraulic cylinder and a magnetic suction cup, and the base is used to connect the support unit with the longitudinal guide rail, and the hydraulic cylinder is connected to the magnetic suction cup. The up and down position of the magnetic suction cup is adjusted by the up and down movement of the piston in the hydraulic cylinder, and the magnetic suction cup is adsorbed on the surface of the curved plate to be supported. Through the present invention, the effective positioning of the plate is achieved, so that the curved plate is sufficiently constrained during the manufacturing process, and the time-consuming installation and disassembly of the fixture and the position interference problem are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field related to processing of ship plates with complex curvature, and more specifically, relates to a supporting and positioning device for manufacturing curved plate materials. Background Art

[0002] Incremental forming is a commonly used technical means in the processing of complex curvature plates for ships. Incremental forming usually uses rollers as processing tools, and local deformation of the plates is achieved by constructing local bending conditions of the plates or thinning the local thickness of the plates. The rotation of the processing tool drives the plates to move, so that the deformation gradually expands to the whole. During its processing, a large forming force is required. At the same time, it belongs to a local cold bending technology. The plates are not sufficiently constrained during the processing, and the plates are prone to shaking, which is not conducive to processing. The method of using a clamp to constrain the plate usually has the problem of insufficient constraints, a long time to install and disassemble the clamp, and position interference between the clamp and the processing tool. Therefore, it is necessary to provide a positioning device that can provide effective support for the ship's complex curvature plates in incremental forming. Summary of the invention

[0003] In response to the above defects or improvement needs of the prior art, the present invention provides a supporting and positioning device for the manufacture of curved plate materials. By combining the characteristics of plate processing for ships, a supporting and positioning tooling suitable for the manufacture of curved plate materials for ships is obtained, which can achieve effective positioning of the plates, so that the curved plates are sufficiently constrained during the manufacturing process and no unnecessary shaking occurs, thereby providing stable support for the curved plate manufacturing process and avoiding time-consuming installation and disassembly of fixtures and position interference problems.

[0004] To achieve the above object, according to the present invention, a supporting and positioning device for manufacturing curved sheet materials is provided, the positioning device is suitable for the situation where the curved sheet material to be supported is between the upper roller and the lower roller used for processing the curved sheet material, the positioning device comprises a transverse guide rail, a longitudinal guide rail and a supporting unit, wherein:

[0005] The longitudinal guide rail is arranged on the transverse guide rail, and the transverse guide rail and the longitudinal guide rail are respectively used to adjust the transverse and longitudinal positions of the support unit to adapt to the size of the curved plate to be supported; there are multiple support units, which are arranged on the longitudinal guide rail, and the support units are used to contact the curved plate to be supported, so as to support the curved plate;

[0006] The support unit includes a base, a hydraulic cylinder and a magnetic suction cup. The base is used to connect the support unit to the longitudinal guide rail. The hydraulic cylinder is arranged on the base. The hydraulic cylinder is connected to the magnetic suction cup. The up and down position of the magnetic suction cup is adjusted by the up and down movement of the piston in the hydraulic cylinder. The magnetic suction cup is adsorbed on the surface of the curved plate to be supported, and is used to support the curved plate to be supported.

[0007] Further preferably, a universal joint is provided between the hydraulic cylinder and the magnetic suction cup, and the universal joint is used to adjust the direction of the magnetic suction cup so that the suction cup can be more snugly adsorbed on the surface of the curved plate to be supported.

[0008] Further preferably, a pressure sensor is provided on the hydraulic cylinder for detecting the pressure exerted on the curved surface plate to be supported during processing; when the pressure on the curved surface plate to be supported is greater than a preset threshold, the hydraulic cylinder drives the magnetic suction cup to adsorb the curved surface plate to be supported and move downward; when the pressure on the curved surface plate to be supported is less than or equal to the preset threshold, the hydraulic cylinder drives the magnetic suction cup to adsorb the curved surface plate to be supported and move upward, thereby realizing adaptive adjustment of the height of the curved surface plate to be supported according to the pressure exerted on the surface of the curved surface plate to be supported, thereby avoiding excessive or insufficient pressure on the curved surface plate to be supported.

[0009] Further preferably, a position sensor is also provided on the hydraulic cylinder for detecting the distance between the upper roller and the lower roller and the hydraulic cylinder, and determining whether to activate the supporting function of the hydraulic cylinder. When the distance is less than a preset value, the support unit where the position sensor is located moves on the longitudinal guide rail, so that the support unit disengages from its supporting position and does not support the curved plate material. Then the upper roller and the lower roller move to the supporting position where the support unit disengages to process the curved plate material. Otherwise, the support unit does not move.

[0010] Further preferably, the number of the support units is greater than or equal to 3, so as to avoid the falling of the supported curved plate material due to the small number of support units.

[0011] Further preferably, the material of the curved plate to be supported is low carbon steel.

[0012] Further preferably, the positioning device is suitable for incremental forming of curved sheet materials with varying curvature.

[0013] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

[0014] 1. The present invention establishes contact between the support unit and the plate through a magnetic suction cup, avoiding redundant work caused by the loading and unloading of the fixture, saving time and improving work efficiency; at the same time, the positioning device is arranged below the curved plate to be supported, avoiding interference with the position of the processing tool and improving the processing accuracy;

[0015] 2. In the present invention, multiple support units are used to absorb the curved surface plate to be supported by a magnetic suction cup, and the plate is effectively restrained by magnetic adsorption, thereby avoiding unnecessary shaking, improving the stability of the curved surface plate to be supported during processing, and ensuring processing accuracy;

[0016] 3. In the present invention, pressure sensors and position sensors are used to perform feedback adjustment on the hydraulic cylinder piston rod to achieve dynamic adjustment of the plate support and ensure the stability of processing. The device has a simple structure and is easy to operate, and is suitable for positioning in the manufacturing process of curved plates for ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a supporting and positioning device for manufacturing curved plate materials constructed according to a preferred embodiment of the present invention;

[0018] Figure 2 It is a flow chart of the method of using the supporting and positioning device for manufacturing curved plate materials constructed according to the preferred embodiment of the present invention.

[0019] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0020] 1- horizontal guide rail, 2- vertical guide rail, 3- base, 4- hydraulic cylinder, 5- universal joint, 6- magnetic suction cup, 7- curved plate to be supported. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Figure 1 FIG. 1 is a schematic diagram of a structure of a support and positioning device for manufacturing curved plate materials according to an embodiment of the present invention. Figure 1 As shown, the device includes two transverse guide rails 1 arranged in the transverse direction; two longitudinal guide rails 2 span between the two transverse guide rails 1, and the longitudinal guide rails 2 can slide along the length direction of the transverse guide rails; a plurality of support units are installed on each longitudinal guide rail 2, and the support units can slide along the length direction of the longitudinal guide rails; each support unit includes a sliding base 3, a hydraulic cylinder 4, a universal joint 5, and a magnetic suction cup 6, and the hydraulic cylinder is equipped with a pressure sensor and a position sensor.

[0023] The longitudinal guide rail 2 is arranged on the transverse guide rail 1, and the transverse guide rail 1 and the longitudinal guide rail 2 are respectively used to adjust the transverse and longitudinal positions of the support unit to adapt to the size of the curved plate to be supported; there are multiple support units, which are arranged on the longitudinal guide rail, and the support units are used to contact the curved plate to be supported, so as to support the curved plate;

[0024] The support unit includes a base 3, a hydraulic cylinder 4 and a magnetic suction cup 6. The base is used to connect the support unit to the longitudinal guide rail. The hydraulic cylinder 4 is arranged on the base. The hydraulic cylinder is connected to the magnetic suction cup 6. The up and down position of the magnetic suction cup is adjusted by the up and down movement of the piston in the hydraulic cylinder 4. The magnetic suction cup 6 is adsorbed on the surface of the curved plate material to be supported and is used for the curved plate material to be supported.

[0025] Further preferably, a universal joint is provided between the hydraulic cylinder 4 and the magnetic suction cup 6, and the universal joint is used to adjust the direction of the magnetic suction cup so that the suction cup can be more snugly adsorbed on the surface of the curved plate to be supported.

[0026] Further preferably, the number of the support units is greater than or equal to 3, so as to avoid the curved surface plate to be supported falling due to the small number of support units.

[0027] Further preferably, the material of the curved plate 7 to be supported is low carbon steel.

[0028] When in use, the length of the longitudinal guide rail can be set according to the actual length of the plate to be processed. In this embodiment, the length of the longitudinal guide rail is twice the length of the plate to be processed. The spacing between the transverse guide rails and the length of the longitudinal guide rail can be set according to the width of the plate to be processed. In this embodiment, the distance between the transverse guide rails is equal to twice the width of the plate to be processed, and the length of the transverse guide rail is equal to twice the width of the plate to be processed. For example, if the length of the plate to be processed is 2 meters and the width is 1 meter, the length of the transverse guide rail is set to 4 meters, the distance between the two transverse guide rails is set to 2 meters, and the length of the longitudinal guide rail is set to 2 meters.

[0029] During operation, the pressure sensor installed on each hydraulic cylinder performs feedback adjustment on the pressure between the magnetic suction cup and the plate. Specifically, in actual use, the pressure threshold range of the pressure sensor is set according to the weight of the plate to be processed (0.25×weight of the plate to be processed×0.9~0.25×weight of the plate to be processed×1.1). During use, when the pressure detected by the pressure sensor exceeds the set threshold range, the pressure sensor sends a signal to the hydraulic cylinder to realize the upward or downward movement of the hydraulic piston rod until the pressure detected by the pressure sensor is within the set threshold range.

[0030] During operation, the position sensor installed on each hydraulic cylinder provides feedback and adjustment on the support between the hydraulic cylinder and the plate. Specifically, the distance threshold range of the position sensor is set (0.00m to 0.02m) in actual use. During use, the position sensor monitors the distance between the processing tool of the plate to be processed and the hydraulic cylinder. When the detected distance enters the set threshold range, the support of the hydraulic cylinder is removed; when the distance detected by the position sensor is greater than 0.02m, the support of the hydraulic cylinder is turned on.

[0031] Further preferably, the positioning device is suitable for incremental forming of curved sheet materials with varying curvature.

[0032] The specific process of manufacturing the supporting positioning tooling by using the curved plate of the present invention will be described in detail below.

[0033] like Figure 2 As shown, when in use, the length of the longitudinal guide rail, the spacing of the transverse guide rails, and the length of the transverse guide rails are set according to the size of the plate to be processed, and the plate to be processed is moved to the processing station through the sliding cooperation between the transverse guide rail and the longitudinal guide rail, and the sliding cooperation between the longitudinal guide rail and the sliding base; during the processing, each hydraulic cylinder relies on the position sensor to decide whether to start the supporting function of the hydraulic cylinder; during the processing, the pressure sensor senses the pressure between the magnetic suction cup and the plate to be processed and feeds it back to the hydraulic cylinder, and the position of the hydraulic piston rod is adjusted to ensure that the interaction force between the magnetic suction cup and the plate to be processed is not too large or too small, so as to ensure the stability of the processing process; after the processing is completed, the processed plate is moved to the specified position.

[0034] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support and positioning device for manufacturing curved plate materials, characterized in that: The positioning device is suitable for the situation where a curved plate to be supported is between an upper roller and a lower roller used for processing the curved plate, and the positioning device comprises a transverse guide rail (1), a longitudinal guide rail (2) and a supporting unit, wherein: The longitudinal guide rail (2) is arranged on the transverse guide rail (1), and the transverse guide rail and the longitudinal guide rail are respectively used to adjust the transverse and longitudinal positions of the support unit, so as to adapt to the size of the curved plate to be supported; there are a plurality of support units, which are arranged on the longitudinal guide rail, and the support units are used to contact the curved plate to be supported, so as to support the curved plate; The support unit comprises a base (3), a hydraulic cylinder (4) and a magnetic suction cup (6); the base (3) is used to connect the support unit to the longitudinal guide rail (2); the hydraulic cylinder (4) is arranged on the base; the hydraulic cylinder (4) is connected to the magnetic suction cup (6); the upper and lower positions of the magnetic suction cup are adjusted by the up and down movement of the piston in the hydraulic cylinder; the magnetic suction cup (6) is adsorbed on the surface of the curved plate to be supported, and is used to support the curved plate to be supported; A universal joint is provided between the hydraulic cylinder (4) and the magnetic suction cup (6), and the universal joint is used to adjust the direction of the magnetic suction cup so that the suction cup can be more closely attached to the surface of the curved plate to be supported; The hydraulic cylinder (4) is provided with a pressure sensor for detecting the pressure on the curved plate to be supported during processing. When the pressure on the curved plate to be supported is greater than a preset threshold, the hydraulic cylinder drives the magnetic suction cup to adsorb the curved plate to be supported and move it downward. When the pressure on the curved plate to be supported is less than or equal to the preset threshold, the hydraulic cylinder drives the magnetic suction cup to adsorb the curved plate to be supported and move it upward, thereby realizing adaptive adjustment of the height of the curved plate to be supported according to the pressure on the surface of the curved plate to be supported, thereby avoiding excessive or insufficient pressure on the curved plate to be supported. The hydraulic cylinder (4) is also provided with a position sensor for detecting the distance between the upper roller and the lower roller and the hydraulic cylinder, and determining whether to activate the supporting function of the hydraulic cylinder. When the distance is less than a preset value, the support unit where the position sensor is located moves on the longitudinal guide rail, so that the support unit is separated from its supporting position and does not support the curved plate. Then, the upper roller and the lower roller move to the support position where the support unit is separated to process the curved plate. Otherwise, the support unit does not move.

2. A supporting and positioning device for manufacturing curved plate material according to claim 1, characterized in that: The number of the support units is greater than or equal to 3 to prevent the supported curved plate from falling due to a small number of support units.

3. A supporting and positioning device for manufacturing curved plate material according to claim 1, characterized in that: The material of the curved plate (7) to be supported is low carbon steel.

4. A supporting and positioning device for manufacturing curved plate material as claimed in claim 1, characterized in that: The positioning device is suitable for incremental forming of curved sheet materials with varying curvature.

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