Large-tonnage large-table-board forming press
The hydraulic forming machine design with symmetrical split structure and dynamic pressure graded control solves the problem of insufficient table size, realizes efficient forming and simplified assembly of large tonnage large table press, and meets the forming requirements of large-size medium and thick plate parts.
Patent Information
- Application Number
- CN202423191937.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing hydraulic forming machine has insufficient table size, which cannot meet the forming requirements of large-sized medium and thick plate parts, and the processing and assembly are difficult.
The upper beam and base adopt a symmetrical split structure, combined with dynamic pressure graded control of ten sets of hydraulic cylinders. The loading speed of different pressure ranges can be adjusted through proportional cartridge valves, which simplifies the system structure and improves assembly convenience.
It has realized a forming press with large tonnage and large table, which can meet the forming needs of large-size medium and heavy plate parts, simplify the processing and assembly process, and reduce the complexity of system structure.
Smart Images
Figure CN223618325U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydraulic forming technology, and in particular relates to a large-tonnage, large-table forming press. Background Technology
[0002] The hydraulic forming machine consists of an upper crossbeam, a slider, a worktable, columns, and hydraulic cylinders. The upper crossbeam and worktable form a closed frame via the columns and nuts. The hydraulic cylinders drive the slider to move up and down along the columns. The cylinders are located inside the upper crossbeam, and the cylinder body is fixed to the upper crossbeam via flanges. The piston rod is connected to the movable crossbeam via connecting flanges. The working principle of the hydraulic system of the hydraulic forming machine is as follows: the oil pump delivers hydraulic oil to the integrated cartridge valve block, and through various check valves and relief valves, the hydraulic oil is distributed to the upper or lower chambers of each cylinder. Under the action of high-pressure oil, the cylinders move.
[0003] Currently, presses used for producing high-strength steel hot-formed parts for passenger vehicles have a tonnage of 1200 or 1500 tons, and a typical worktable size of 2000x1500mm, which is insufficient for forming large-sized medium-thick plate parts. Because the machining and assembly of large-table presses are more difficult, the worktables of presses currently on the market are generally not large. The applicant aims to invent a high-tonnage, large-table forming press. Utility Model Content
[0004] The purpose of this invention is to provide a large-tonnage, large-table forming press that can meet the forming needs of large-sized, medium-thick plate parts.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a large-tonnage, large-table forming press, comprising a controller, a hydraulic system, an upper crossbeam, a slider, a base, a worktable, a movable crossbeam, columns, and cylinders. The controller is used to control the hydraulic system and to disconnect or connect the cylinders to the hydraulic system. The upper crossbeam and the base are connected by several sets of columns. The worktable is mounted on the base. The cylinders are mounted inside the upper crossbeam and driven by the hydraulic system. The slider is slidably connected to the columns and fixed to the movable crossbeam. The telescopic rod of the cylinder is used to drive the movable crossbeam to move vertically. Both the upper crossbeam and the base adopt a symmetrical split structure and are separated along the centerline in the width direction. The split upper crossbeam and the base are both... The system employs several sets of connection structures for connection. Each set of connection structures includes a pull rod and two sets of nuts. The connection points of the split upper crossbeam and the base are each provided with mounting grooves, and the mounting grooves contain through holes through which the pull rods can pass. The pull rods have threaded sections on both sides that match the nuts. Both sides of the pull rod pass through the through holes and are respectively located in the mounting grooves of two parts of the split upper crossbeam or two parts of the base. The two sets of nuts are threadedly connected to both sides of the pull rod, and neither set of nuts can pass through the through holes. Ten sets of hydraulic cylinders are provided, divided into two pressure assemblies. Each pressure assembly corresponds to one of the two parts of the split upper crossbeam. The hydraulic cylinders of the two pressure assemblies are one-to-one and symmetrical along the centerline of the upper crossbeam's width.
[0006] Furthermore, the dimensions of the worktable are 10000x4000mm.
[0007] Furthermore, the controller controls the number of times the hydraulic cylinders open and close based on the weight of the load.
[0008] Furthermore, when the load is less than 80% of the tonnage of the middle four sets of cylinders, the controller controls the hydraulic system to supply oil to the middle four sets of cylinders; when the load is greater than 80% of the tonnage of the middle four sets of cylinders but less than 2400 tons, the controller controls the hydraulic system to supply oil to the middle six sets of cylinders; when the load is greater than 2400 tons, the controller controls the hydraulic system to supply oil to all ten sets of cylinders.
[0009] Furthermore, the oil supply channel between the hydraulic system and the oil cylinder is connected by a proportional cartridge valve, which is controlled by the controller.
[0010] Furthermore, the proportional cartridge valve can adjust the loading speed; the loading speed is 700 mm / s when unloaded; the maximum loading speed is 100 mm / s when the load is 800 tons; and the loading speed is 10 mm / s when the load is 4000 tons.
[0011] Furthermore, the two parts of the split upper beam or the two parts of the base are positioned by keys.
[0012] The beneficial effects of this technical solution are as follows:
[0013] ① The upper crossbeam and base adopt a symmetrical split structure for easy transportation. The split upper crossbeam and base are positioned by keys and connected by tie rods and nuts, which solves the processing and assembly problems of large table presses.
[0014] ② Dynamic pressure grading can be divided into three-stage pressurization. The main cylinder uses 10 sets of oil cylinders. The hydraulic system adopts proportional cartridge grading pressurization technology. When the load is less than 80% of the tonnage of the middle 4 sets of oil cylinders, the hydraulic system supplies oil to the middle 4 sets of oil cylinders; when the load is greater than 80% of the tonnage of the middle 4 sets of oil cylinders but less than 2400 tons, the hydraulic system supplies oil to the middle 6 sets of oil cylinders; when the load is greater than 2400 tons, the hydraulic system supplies oil to all 10 sets of oil cylinders. This achieves three-stage pressure distribution of the slider, reduces the number of proportional cartridge valves used, simplifies the system structure and control difficulty; the loading speed of different pressure stages can be digitally adjusted through proportional cartridge valves.
[0015] ③ This solution has a relatively large tonnage and table size, which can meet the requirements for forming large-sized medium and thick plate parts. Attached Figure Description
[0016] Figure 1 This is a front view of a large-tonnage, large-table forming press according to the present invention;
[0017] Figure 2 This is a side view of a large-tonnage, large-table forming press according to the present invention. Detailed Implementation
[0018] The following detailed description illustrates the specific implementation method:
[0019] The reference numerals in the accompanying drawings of the instruction manual include: hydraulic system 1, upper crossbeam 2, slider 3, column 4, cylinder 5, tie rod 6, nut 7, mounting groove 8, and base 9.
[0020] 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.
[0021] The basic implementation examples are as follows: Figure 1-2The image shows a large-tonnage, large-table forming press, comprising a controller, a hydraulic system 1, an upper crossbeam 2, a slider 3, a base 9, a worktable, a movable crossbeam, columns 4, and cylinders 5. The controller controls the hydraulic system 1 and disconnects or connects the cylinders 5 to the hydraulic system 1. The upper crossbeam 2 and the base 9 are connected by several sets of columns 4. The worktable is mounted on the base 9 and has dimensions of 10000x4000mm. The cylinders 5 are installed inside the upper crossbeam 2 and are driven by the hydraulic system 1. The slider 3 is slidably connected to the columns 4 and fixed to the movable crossbeam; the telescopic rod of the cylinders 5 drives the movable crossbeam to move vertically.
[0022] Both the upper crossbeam 2 and the base 9 adopt a symmetrical split structure and are separated along the centerline in the width direction; the two parts of the split upper crossbeam 2 or the two parts of the base 9 are positioned by a key. The split upper crossbeam 2 and the base 9 are connected by several sets of connection structures. Each set of connection structures includes a tie rod 6 and two sets of nuts 7. The connection position of the split upper crossbeam 2 and the base 9 is provided with a mounting groove 8, and the mounting groove 8 is provided with a through hole that can pass through the tie rod 6; the two sides of the tie rod 6 are provided with threaded sections that match the nuts 7. The two sides of the tie rod 6 pass through the through hole and are respectively located in the mounting groove 8 of the two parts of the split upper crossbeam 2 or the two parts of the base 9. The two sets of nuts 7 are respectively threaded to the two sides of the tie rod 6, and the two sets of nuts 7 cannot pass through the through hole. There are ten sets of hydraulic cylinders 5. The ten sets of hydraulic cylinders 5 are divided into two sets of pressure components. The two sets of pressure components correspond to the two parts of the split upper crossbeam 2 respectively; the hydraulic cylinders 5 of the two sets of pressure components are one-to-one and symmetrical along the centerline in the width direction of the upper crossbeam 2.
[0023] The oil supply channel between hydraulic system 1 and cylinders 5 is connected by a proportional cartridge valve, which is controlled by a controller. The controller controls the number of cylinders 5 opened and closed based on the load weight. When the load is less than 80% of the tonnage of the four middle cylinders 5, the controller controls hydraulic system 1 to supply oil to the four middle cylinders 5; when the load is greater than 80% of the tonnage of the four middle cylinders 5 but less than 2400 tons, the controller controls hydraulic system 1 to supply oil to the six middle cylinders 5; when the load is greater than 2400 tons, the controller controls hydraulic system 1 to supply oil to all ten cylinders 5. The proportional cartridge valve can adjust the loading speed; the loading speed is 700 mm / s under no-load conditions; the maximum loading speed is 100 mm / s under an 800-ton load; and the loading speed is 10 mm / s under a 4000-ton load.
[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0025] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A large-tonnage, large-table forming press, characterized in that: The system includes a controller, a hydraulic system (1), an upper crossbeam (2), a slider (3), a base (9), a worktable, a movable crossbeam, columns (4), and cylinders (5). The controller controls the hydraulic system (1) and disconnects or connects the cylinders (5) to the hydraulic system (1). The upper crossbeam (2) and the base (9) are connected by several sets of columns (4). The worktable is mounted on the base (9). The cylinders (5) are installed inside the upper crossbeam (2) and driven by the hydraulic system (1). The slider (3) is slidably connected to the columns (4) and fixed to the movable crossbeam. The telescopic rod of the cylinders (5) is used to drive the movable crossbeam to move vertically. The upper crossbeam (2) and the base (9) are both symmetrical split structures and are separated along the center line in the width direction. The split upper crossbeam (2) and the base (9) are connected by several sets of connecting structures. Each set of the connection structure includes a pull rod (6) and two sets of nuts (7). The connection positions of the split upper crossbeam (2) and the base (9) are provided with mounting grooves (8), and the mounting grooves (8) are provided with through holes through which the pull rod (6) can pass. The two sides of the pull rod (6) are provided with threaded sections that match the nuts (7). The two sides of the pull rod (6) pass through the through holes and are respectively located in the mounting grooves (8) of the two parts of the split upper crossbeam (2) or the two parts of the base (9). The two sets of nuts (7) are respectively threaded to the two sides of the pull rod (6) and the two sets of nuts (7) cannot pass through the through holes. There are ten sets of oil cylinders (5). The ten sets of oil cylinders (5) are divided into two sets of pressure components. The two sets of pressure components correspond to the two parts of the split upper crossbeam (2). The oil cylinders (5) of the two sets of pressure components are one-to-one and symmetrical along the center line of the width direction of the upper crossbeam (2).
2. The large-tonnage, large-table forming press according to claim 1, characterized in that: The dimensions of the worktable are 10000x4000mm.
3. The large-tonnage, large-table forming press according to claim 1, characterized in that: The controller controls the number of times the hydraulic cylinder (5) is opened and closed based on the weight of the load.
4. The large-tonnage, large-table forming press according to claim 3, characterized in that: When the load is less than 80% of the tonnage of the four middle cylinders (5), the controller controls the hydraulic system (1) to supply oil to the four middle cylinders (5); when the load is greater than 80% of the tonnage of the four middle cylinders (5) and less than 2400 tons, the controller controls the hydraulic system (1) to supply oil to the six middle cylinders (5); when the load is greater than 2400 tons, the controller controls the hydraulic system (1) to supply oil to all ten cylinders (5).
5. A large-tonnage, large-table forming press according to claim 4, characterized in that: The oil supply channel between the hydraulic system (1) and the oil cylinder (5) is connected by a proportional cartridge valve, which is controlled by the controller.
6. A large-tonnage, large-table forming press according to claim 5, characterized in that: The proportional cartridge valve can adjust the loading speed; under no-load conditions, the loading speed is 700 mm / s. When the load is 800 tons, the maximum loading speed is 100 mm / s; When the load is 4000 tons, the loading speed is 10mm / s.
7. A large-tonnage, large-table forming press according to claim 1, characterized in that: The two parts of the split upper beam (2) or the two parts of the base (9) are positioned by keys.