Multifunctional pipe forming device

Abstract

According to the multifunctional pipe forming device, the die and pipe blank heating function, the hydraulic bulging function and the gas bulging function are integrated on one set of equipment, corresponding procedures can be flexibly selected and executed according to actual materials and design requirements of pipes, the repeated disassembly, assembly and debugging process of workpieces among different stations, equipment and dies is avoided, and the production efficiency is improved. And the final forming precision and the product quality can be guaranteed, and the manpower and material resource cost can be greatly reduced, so that the production efficiency is remarkably improved, and batch manufacturing of the novel high-performance vehicle tubular beam component is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of thermoplastic forming of metal pipes, and in particular relates to a multifunctional pipe forming device capable of realizing processes such as air bulging forming and hydraulic forming. Background Art

[0002] At present, driven by the automotive industry's demand for high performance and lightweight, a number of new design forms of body structural components have emerged. Since these new-shaped components not only have significant improvements in structural strength, lightweight and other indicators, but also have more complex geometric shapes, they pose more challenges to the forming process. Although in some manufacturing methods using hydraulic forming and gas bulging processes, the high-pressure bulging medium and high temperature conditions can provide forming accuracy and product performance that are significantly better than traditional molding methods, sometimes it still cannot meet the extremely high performance and production capacity requirements of some new pipe components. If the two processes of hydraulic bulging and gas bulging are combined in manufacturing and flexibly selected according to actual tube blank materials, design goals and other factors, it will help to achieve higher pipe fittings indicators. However, due to the many differences between the two processes in the bulging medium pressurization supply method, mold design, pressure and temperature conditions during process execution, the two processes can only be carried out in steps and under the premise of changing the station equipment at this stage, resulting in high production costs and serious lack of production efficiency. Summary of the invention

[0003] In view of this, in order to solve the technical problems existing in this field, the present invention provides a multifunctional pipe forming device, which is composed of a hydraulic station, a booster cylinder, a side push cylinder, a forming die, a sealing component, a heating device, a sensor component, an industrial control console and a load-bearing bed;

[0004] Among them, the hydraulic station, booster cylinder, side thrust cylinder, forming die and heating device are all fixedly installed on the load-bearing bed;

[0005] The hydraulic station is arranged at one end of the forming die, and is used to supply liquid bulging medium into the die when performing the hydraulic bulging process; the booster cylinder is arranged at one end of the forming die, and is used to supply gas bulging medium into the die when performing the gas bulging process;

[0006] The side push cylinder is arranged at both ends of the forming die and connected to the sealing assembly; the sealing assembly includes a sealing head and a sealing sliding seat, and the sealing sliding seat is connected to the side push rod, which can drive the sealing head to move under the action of the side push cylinder, thereby sealing both ends of the tube blank to be processed placed in the forming die;

[0007] The hydraulic station and the booster cylinder are respectively connected with ultra-high pressure pipelines, which pass through the sealing head at one end of the forming die, so that the tube to be processed in the forming die is connected with the hydraulic station and the booster cylinder respectively; the sealing head is also provided with a valve connected with the ultra-high pressure pipeline, which is used to control the liquid and gas bulging medium to enter and discharge the tube to be processed;

[0008] The heating device is used to heat the forming die and the tube blank to be processed placed therein; the sensor assembly is used to measure the temperature and the bulging medium pressure during the forming process;

[0009] The industrial control console is used to control the tube forming process and make corresponding adjustments based on the measured temperature and pressure parameters.

[0010] Furthermore, the heating device includes a heating power supply and an electric heater and a heating electrode connected thereto; the heating power supply is arranged outside the forming mold, and the electric heater is arranged on the forming mold, and can heat the inner cavity of the forming mold under the drive of the heating power supply; the heating electrodes are arranged inside the forming mold, at both ends of the tube blank to be processed, and can cause the tube blank to self-heat under the drive of the heating power supply.

[0011] Furthermore, the device also includes a water tank and a mold protective cover; the water tank is fixedly installed on the load-bearing bed and is used to cool the forming mold at the end of the hydraulic bulging or gas bulging process; the mold protective cover is arranged outside the forming mold to prevent the high temperature of the forming mold from being transmitted outward.

[0012] Furthermore, the sensor assembly includes a sensor sliding bracket, which is used to drive the temperature sensor thereon to slide horizontally along the forming mold to measure the temperature at different positions of the mold in a non-contact manner.

[0013] The multifunctional tube forming device provided by the present invention integrates the functions of mold and tube heating, hydraulic bulging and gas bulging in one set of equipment. It can flexibly select and execute the corresponding process according to the actual material and design requirements of the tube, avoiding the repeated disassembly and debugging of the workpiece between different workstations, equipment and molds. It can not only ensure the final forming accuracy and product quality, but also greatly reduce the manpower and material costs, thereby significantly improving production efficiency, which is conducive to the mass production of high-performance new automotive tubular beam components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the device provided by the present invention. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The multifunctional tube forming device provided by the present invention is as follows: Figure 1 As shown, it is composed of a hydraulic station, a booster cylinder, a side thrust cylinder, a forming die, a sealing component, a heating device, a sensor component, an industrial control console and a load-bearing bed;

[0019] Among them, the hydraulic station, booster cylinder, side thrust cylinder, forming die and heating device are all fixedly installed on the load-bearing bed; the forming die can be replaced according to the processing needs of different pipes;

[0020] The hydraulic station is arranged at one end of the forming die, and is used to supply liquid bulging medium into the die when performing the hydraulic bulging process; the booster cylinder is arranged at one end of the forming die, and is used to supply gas bulging medium into the die when performing the gas bulging process;

[0021] The side push cylinder is arranged at both ends of the forming die and connected to the sealing assembly; the sealing assembly includes a sealing head and a sealing sliding seat, and the sealing sliding seat is connected to the side push rod, which can drive the sealing head to move under the action of the side push cylinder, thereby sealing both ends of the tube blank to be processed placed in the forming die;

[0022] The hydraulic station and the booster cylinder are respectively connected with ultra-high pressure pipelines, which pass through the sealing head at one end of the forming die, so that the tube to be processed in the forming die is connected with the hydraulic station and the booster cylinder respectively; the sealing head is also provided with a valve connected with the ultra-high pressure pipeline, which is used to control the liquid and gas bulging medium to enter and discharge the tube to be processed;

[0023] The heating device is used to heat the forming die and the tube blank to be processed placed therein; the sensor assembly is used to measure the temperature and the bulging medium pressure during the forming process;

[0024] The industrial control console is used to control the tube forming process and make corresponding adjustments based on the measured temperature and pressure parameters.

[0025] In a preferred embodiment of the present invention, the heating device includes a heating power supply and an electric heater and a heating electrode connected thereto; the heating power supply is arranged outside the forming mold, and the electric heater is arranged on the forming mold, and can heat the inner cavity of the forming mold under the drive of the heating power supply; the heating electrodes are arranged inside the forming mold, at both ends of the tube blank to be processed, and can cause the tube blank to self-heat under the drive of the heating power supply.

[0026] In a preferred embodiment of the present invention, the device also includes a water tank and a mold protection cover; the water tank is fixedly installed on the load-bearing bed and is used to cool the forming mold at the end of the hydraulic bulging or gas bulging process; the mold protection cover is arranged on the outside of the forming mold to prevent the high temperature of the forming mold from being transmitted outward and protect the safety of the operator.

[0027] In a preferred embodiment of the present invention, the sensor assembly includes a sensor sliding bracket, which is used to drive the temperature sensor thereon to slide horizontally along the forming mold to measure the mold temperature in a non-contact manner, thereby being able to accurately control process parameters such as temperature according to the design requirements of the shape, wall thickness, etc. of the target finished product at different positions to ensure processing accuracy.

[0028] When the device provided by the present invention is used to process a certain pipe component, the following steps can be used to achieve the process, and different processes can be flexibly selected:

[0029] (1) Place the tube to be formed into the mold in the device, select the appropriate processing technology according to the material and structure of the tube, and set the corresponding process parameters;

[0030] (2) If the tube needs to be processed at high temperature, the heating mold in the furnace should be preheated in advance, and the tube should be preheated in an external furnace before being placed in the mold;

[0031] (3) After the tube blank is placed, the two ends are sealed by a sealing device to connect the feed pipe and the discharge pipe;

[0032] (4) Open the feed valve, let liquid or high-pressure gas into the tube, and perform the forming operation until the tube is completely in contact with the inner wall of the mold;

[0033] (5) Open the discharge valve to discharge the liquid or high-pressure gas, open the mold and take out the bulged part.

[0034] It should be understood that the size of the serial numbers of the steps in the embodiment of the present invention does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional tube forming device, characterized in that: It consists of a hydraulic station, a booster cylinder, a side thrust cylinder, a forming die, a sealing component, a heating device, a sensor component, an industrial control console and a load-bearing bed. Among them, the hydraulic station, booster cylinder, side thrust cylinder, forming die and heating device are all fixedly installed on the load-bearing bed; The hydraulic station is arranged at one end of the forming die, and is used to supply liquid bulging medium into the die when performing the hydraulic bulging process; the booster cylinder is arranged at one end of the forming die, and is used to supply gas bulging medium into the die when performing the gas bulging process; The side push cylinder is arranged at both ends of the forming die and connected to the sealing assembly; the sealing assembly includes a sealing head and a sealing sliding seat, and the sealing sliding seat is connected to the side push rod, which can drive the sealing head to move under the action of the side push cylinder, thereby sealing both ends of the tube blank to be processed placed in the forming die; The hydraulic station and the booster cylinder are respectively connected with ultra-high pressure pipelines, which pass through the sealing head at one end of the forming die, so that the tube to be processed in the forming die is connected with the hydraulic station and the booster cylinder respectively; the sealing head is also provided with a valve connected with the ultra-high pressure pipeline, which is used to control the liquid and gas bulging medium to enter and discharge the tube to be processed; The heating device is used to heat the forming die and the tube blank to be processed placed therein; the sensor assembly is used to measure the temperature and the bulging medium pressure during the forming process; The industrial control console is used to control the tube forming process and make corresponding adjustments based on the measured temperature and pressure parameters.

2. The multifunctional tube forming device according to claim 1, characterized in that: The heating device includes a heating power supply and an electric heater and a heating electrode connected thereto; the heating power supply is arranged outside the forming mold, and the electric heater is arranged on the forming mold, and can heat the inner cavity of the forming mold under the drive of the heating power supply; the heating electrodes are arranged inside the forming mold and at both ends of the tube blank to be processed, and can make the tube blank self-heated under the drive of the heating power supply.

3. The multifunctional tube forming device according to claim 1, characterized in that: The device also includes a water tank and a mold protection cover; the water tank is fixedly installed on the load-bearing bed and is used to cool the forming mold at the end of the hydraulic bulging or gas bulging process; the mold protection cover is arranged outside the forming mold and is used to prevent the high temperature of the forming mold from being transmitted outward.

4. The multifunctional tube forming device according to claim 1, characterized in that: The sensor assembly comprises a sensor sliding bracket, which is used to drive the temperature sensor thereon to slide horizontally along the forming mold, so as to measure the temperature at different positions of the mold in a non-contact manner.

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