阅读说明：本技术 一种柔性横梁式拉杆锁紧板件液压成形工作站设备 (Flexible cross beam type pull rod locking plate hydraulic forming workstation equipment ) 是由 陈扬 孙正启 李向荣 于 2019-01-14 设计创作，主要内容包括：本发明的目的在与提供一种柔性横梁式拉杆锁紧板件液压成形工作站设备,包括合模油缸,横梁,上模,下模,工作台,导向柱,驱动装置,锁紧螺杆,锁紧螺帽,液压室；所述横梁,上模,下模,工作台自上至下依次设置；所述上模固定在所述横梁上,所述下模固定在所述工作台上,所述工作台上装有导向柱；所述驱动装置固定在所述下模上,所述锁紧螺杆与所述驱动装置连接,所述锁紧螺帽固定在所述上模上；所述合模油缸固定在所述横梁与工作台之间；本发明的有益效果为通过将锁紧螺杆与锁紧螺帽旋转配合,充当拉杆将模具锁紧,提供板件液压成形的锁紧力,极大降低了对压机吨位的需求,设备投资成本低；同时模具可以进行轻量化设计,生产节拍更快。(The invention aims to provide flexible cross beam type pull rod locking plate hydraulic forming workstation equipment which comprises a die assembly oil cylinder, a cross beam, an upper die, a lower die, a workbench, a guide post, a driving device, a locking screw rod, a locking nut and a hydraulic chamber; the cross beam, the upper die, the lower die and the workbench are sequentially arranged from top to bottom; the upper die is fixed on the cross beam, the lower die is fixed on the workbench, and the workbench is provided with a guide post; the driving device is fixed on the lower die, the locking screw is connected with the driving device, and the locking nut is fixed on the upper die; the die closing oil cylinder is fixed between the cross beam and the workbench; the hydraulic forming die has the advantages that the locking screw is matched with the locking nut in a rotating mode and serves as a pull rod to lock the die, so that the locking force of plate hydraulic forming is provided, the requirement on the tonnage of a press is greatly reduced, and the equipment investment cost is low; meanwhile, the mold can be designed in a light weight mode, and the production beat is faster.)

1. A flexible cross beam type pull rod locking plate hydraulic forming device comprises a cross beam (1), an upper die (2), a lower die (3), a workbench (4), a guide post (5), a die closing oil cylinder (6), a driving device (8), a locking screw rod (7), a locking nut (9) and a hydraulic chamber (10);

it is characterized in that the preparation method is characterized in that,

the beam (1), the upper die (2), the lower die (3) and the workbench (4) are sequentially arranged from top to bottom; the upper die (2) is fixed on the cross beam (1); the lower die (2) is fixed on the workbench (4); the lower end of the guide post (5) is fixed on the workbench (4) and guides the cross beam;

the driving device (8) is fixed on the lower die (3); the locking screw (7) is connected with a driving device (8); the locking nut (9) is fixed on the upper die (2); the locking nut (9) is matched with the locking screw rod (7); the die closing oil cylinder (6) is fixed between the upper die (2) and the lower die (3).

2. The flexible beam lock panel hydroforming station apparatus according to claim 1, wherein: the hydraulic system (13) is further included, and the hydraulic system (13) is connected with the die closing oil cylinder (6).

3. The flexible beam lock panel hydroforming station apparatus according to claim 2, wherein: the device also comprises a water injection and pressurization system (14); the water injection and pressurization system (14) is connected with the hydraulic chamber (10) on the mould.

4. A flexible beam lock panel hydroforming station device according to claim 1, characterized in that said mold locking means is a tie rod lock, said drive means (8) rotating said lock screw (7).

5. A flexible beam type tie rod locking plate hydroforming station device according to claim 4, characterized in that a plurality of said lock screws (7) and lock nuts (9) cooperating with said driving means (8) are provided; and the locking screws (7) and the locking nuts (9) which are matched with the driving device (8) are uniformly distributed around the cavities of the upper die (2) and the lower die (3).

6. A flexible beam tie rod lock plate hydroforming station device according to claim 5, characterized in that the drive means (8) is provided with a feedback system for controlling the mold pretension by means of a rotational connection of the lock screw (7) with the lock nut (9).

7. A flexible beam type tie rod locking panel hydroforming station according to claim 6, characterized in that said upper die (2) and said lower die (3) are of lightweight design.

8. The flexible cross-beam type tie rod locking plate hydroforming workstation equipment according to claim 7, wherein the cross beam (1) is designed in a lightweight way, the closing cylinder (6) adopts a small tonnage driving force, the moving speed of opening and closing is 0-1200m/s, and the stroke is 400-1800 mm.

Technical Field

The invention relates to the field of hydraulic forming equipment, in particular to hydraulic forming workstation equipment for a flexible cross beam type pull rod locking plate, which is suitable for hydraulic forming of metal plates such as steel, aluminum alloy, magnesium alloy and the like.

Background

The hydroforming technology is also called as internal high pressure forming technology, and uses liquid media such as water and the like to generate huge pressure under the action of high pressure to serve as a male die or a female die of a die, so that the workpiece is attached to a die cavity of the die and plastic forming is carried out, and finally a component with a required shape is obtained. The hydraulic forming is adopted, the plate or the pipe fitting is formed under the action of hydrostatic pressure stress, the forming performance is good, deep drawing and bulging can be carried out, the stress of the component is the pressure stress, the rebound quantity is small, the forming size is accurate and stable, and the method is an important processing method for realizing complex workpiece and precise forming.

However, the main body of the hydraulic forming equipment is a large-tonnage hydraulic press, the liquid bulging pressure is usually 150-. By combining the factors, the hydraulic forming press is required to have good rigidity, long stroke, large tonnage, large mold tonnage and large investment, and is a main source of the hydraulic forming production cost of large-scale components.

The published Chinese utility model patent has the publication number: CN206083537U, patent name: the utility model provides an interior high-pressure bulging device of deep die cavity panel part, application date: 20160831, it discloses an internal high-pressure bulging device for deep cavity plate parts, comprising a main machine part, a hydraulic control part, a computer automatic control part, wherein the main machine part comprises a frame and an ultrahigh pressure liquid filling chamber, both ends of the ultrahigh pressure liquid filling chamber are provided with edge pressing cylinders, the top of the edge pressing cylinders and the ultrahigh pressure liquid filling chamber are provided with edge pressing sliders, the edge pressing sliders are connected with the edge pressing cylinders, the top of the edge pressing sliders is provided with an excessive seat, the edge pressing sliders are internally provided with holes matched with the excessive seat, and the excessive seat performs piston movement in the holes; the ultrahigh pressure liquid filling chamber is connected with a pressure cylinder through a high pressure pipe, the hydraulic control part is respectively connected with the frame, the edge pressing slide block and the pressure cylinder through electric wires, and the automatic computer control part is connected with the hydraulic control part through electric wires. The invention has the beneficial effects that: the forming die can form parts which can not be formed or can be formed for many times by the traditional common forming process, and has the advantages of high forming precision, good part surface quality and high die attachment degree.

The invention uses the locking screw rod on the equipment as the pull rod to tighten and lock the upper die and the lower die together to provide the die locking force required by the plate forming, solves the problem of high tonnage of the press and the die required by the plate hydraulic forming, and greatly reduces the equipment investment cost.

Disclosure of Invention

The invention aims to provide flexible cross beam type pull rod locking plate hydraulic forming workstation equipment, which comprises a cross beam 1, an upper die 2, a lower die 3, a workbench 4, a guide post 5, a die closing oil cylinder 6, a driving device 8, a locking screw 7, a locking nut 9 and a hydraulic chamber 10;

the beam 1, the upper die 2, the lower die 3 and the workbench 4 are sequentially arranged from top to bottom; the upper die 2 is fixed on the cross beam 1; the lower die 2 is fixed on the workbench 4; the lower end of the guide post 5 is fixed on the workbench 4 and guides the beam;

the driving device 8 is fixed on the lower die 3; the locking screw 7 is connected with a driving device 8; the locking nut 9 is fixed on the upper die 2; the locking nut 9 is matched with the locking screw 7; the die closing oil cylinder 6 is fixed between the cross beam 1 and the workbench 4.

Preferably, the hydraulic system 13 is further included, and the hydraulic system 13 is connected with the mold clamping cylinder 6.

Preferably, a water injection and pressurization system 14 is also included; the water injection and pressurization system 14 is connected with the hydraulic chamber 10 on the mold.

Preferably, the mold locking mode is pull rod locking, and the driving device 8 drives the locking screw 7 to rotate.

Preferably, a plurality of locking screws 7 and locking nuts 9 matched with the driving device 8 are arranged; a plurality of locking screws 7 and locking nuts 9 matched with the driving device 8 are uniformly distributed around the cavities of the upper die 2 and the lower die 3.

Preferably, the driving device 8 is provided with a feedback system, and the pretightening force of the mold is controlled by rotationally connecting the locking screw 7 with the locking nut 9.

Preferably, the upper die 2 and the lower die 3 are designed to be light.

Preferably, the beam 1 is designed in a light weight mode, the die closing oil cylinder 6 adopts a small-tonnage driving force, the opening and closing moving speed is 0-1200m/s, and the stroke is 400-1800 mm.

The die has the advantages that the locking screw serves as a pull rod to lock the die, so that the requirement on the rigidity of the plate forming hydraulic station equipment is reduced, and the lighter weight of the press and the die is realized. Meanwhile, on the premise of not reducing the use performance, the equipment structure is simpler, and the production beat is faster.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure, the position of the upper end of the main shaft,

1. a cross beam; 2. an upper die; 3. a lower die; 4. a work table; 5. a guide post; 6. a die closing oil cylinder; 7. locking the screw rod; 8. a drive device; 9. a lock nut; 10. a hydraulic chamber; 11. forming a plate; 12. an electronic control system; 13. a hydraulic system; 14. water injection, pressure boost system.

Detailed Description

The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way.

The invention provides a flexible cross beam type pull rod locking plate hydraulic forming workstation device, which comprises a cross beam 1, an upper die 2, a lower die 3, a workbench 4, a guide post 5, a die closing oil cylinder 6, a driving device 8, a locking screw 7, a locking nut 9 and a hydraulic chamber 10, wherein the cross beam is arranged on the upper die 2;

the beam 1, the upper die 2, the lower die 3 and the workbench 4 are sequentially arranged from top to bottom; the upper die 2 is fixed on the cross beam 1; the lower die 2 is fixed on the workbench 4; the lower end of the guide post 5 is fixed on the workbench 4 and guides the beam;

the driving device 8 is fixed on the lower die 3; the locking screw 7 is connected with a driving device 8; the locking nut 9 is fixed on the upper die 2; the locking nut 9 is matched with the locking screw 7; the die closing oil cylinder 6 is fixed between the cross beam 1 and the workbench 4.

In the present embodiment, it is preferable that a hydraulic system 13 is further included, and the hydraulic system 13 is connected to the mold clamping cylinder 6.

With the above structure, the hydraulic system 13 is used to provide the hydraulic driving force of the mold clamping cylinder 6.

In the embodiment, a water injection and pressurization system 14 is preferably further included, and the water injection and pressurization system 14 is connected with the hydraulic chamber 10 on the mold.

With the above structure, the water injection and pressurization system 14 is used for completing the rapid water injection of the hydraulic chamber 10 and the hydraulic bulging of the plates; the switching between the water injection process and the pressurization process is completed through the electromagnetic overflow valve, and the production takt is improved.

In the preferred embodiment, the locking mode of the mold is pull rod locking, and the driving device 8 drives the locking screw 7 to rotate to serve as a pull rod to lock the upper mold and the lower mold.

In this embodiment, preferably, a plurality of the lock screws 7 and the lock nuts 9 are provided, which are engaged with the driving device 8; a plurality of locking screws 7 and locking nuts 9 matched with the driving device 8 are uniformly distributed around the cavities of the upper die 2 and the lower die 3.

By adopting the structure, the locking screw 7 and the locking nut 8 are uniformly distributed around the formed plate, and the upper die and the lower die are tensioned and locked together, so that the die locking force is directly exerted on the dies.

In this embodiment, the driving device 8 is preferably provided with a feedback system, and the pretightening force of the mold is controlled by rotationally connecting the locking screw 7 and the locking nut 9, and generally 10-70% of the pretightening force of the forming force is applied.

With the structure, the driving device 8 can be a motor, a hydraulic or pneumatic device, and the control of the pre-tightening force of the die is realized through an electric control system.

In this embodiment, the upper mold 2 and the lower mold 3 may be designed to be light and have a smaller amount of mold deformation.

By adopting the structure, the die holder can be made of forged steel or a casting body, the die insert is designed in a light weight manner, and the minimum distance between the die cavity and the bottom of the insert is 20-150 mm.

In the preferred embodiment, the beam 1 can adopt a lightweight design, the die closing oil cylinder can adopt a small-tonnage driving force, the opening and closing moving speed is 0-1200m/s, and the stroke is 400-1800 mm.

By adopting the structure, the locking screw 7 is used as a pull rod to provide locking force for the plate hydraulic forming equipment, so that the rigidity requirement on the equipment beam 1 is reduced, and the beam can realize light weight design; meanwhile, the die closing oil cylinder and the like only serve as driving forces for opening and closing the die, so that the opening and closing speed is higher, and the production takt is greatly improved.

The main working process is as follows:

placing the formed plate on a lower die 3, and driving an equipment beam 1 to quickly move downwards by a die assembly oil cylinder 6 to reach a preset closing point; the water injection system is matched to inject water into the hydraulic chamber 10, the driving device 11 rotates to drive the locking screw 7, and the locking nut 9 is matched and tensioned, so that the upper die 2 overcomes the forming resistance of a workpiece, and the forming, water injection and die assembly are completed.

After the die is closed to the bottom, the pressurization system works under the coordination of the action of the die, and the screw rod serves as a pull rod to provide the locking force of the die, so that the hydraulic bulging of the plate is completed. After the pressure of the pressurization system is relieved, the driving device is started to drive the locking screw rod to rotate reversely to realize the separation of the locking screw rod and the locking nut. And opening the mold and taking out the formed plate.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.