CN219464556U - Pipe-plate connecting device based on electromagnetic pulse and elastic particle medium - Google Patents
Pipe-plate connecting device based on electromagnetic pulse and elastic particle medium Download PDFInfo
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- CN219464556U CN219464556U CN202320067126.5U CN202320067126U CN219464556U CN 219464556 U CN219464556 U CN 219464556U CN 202320067126 U CN202320067126 U CN 202320067126U CN 219464556 U CN219464556 U CN 219464556U
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Abstract
The utility model provides a pipe-plate connecting device based on electromagnetic pulse and elastic particle medium, which comprises a punch (13) driven by the electromagnetic pulse, wherein when the punch works, an elastic particle medium (15), an insulating elastic pad (17), a metal plate (16) and a metal pipe fitting (20) are sequentially arranged in the impact direction of the punch; the elastic particle medium is arranged in a first through cavity of the upper female die (14), the punch is slidably arranged at the upper end of the first through cavity of the upper female die, and the lower end of the pipe cavity is separated from the metal plate by an isolation elastic pad; the connecting end of the metal pipe fitting is arranged at the top of the lower female die (18), and the impact force of the punch drives the metal plate to impact the connecting end of the metal pipe fitting through an elastic particle medium and an isolated elastic pad so as to connect the two; the utility model can solve the irreversible production defects that cracks and the like are easy to generate when the thin-wall pipe-plate connection process is subjected to larger electromagnetic force in the prior art, and the problem of insufficient forming force caused by small induced eddy current of the material with low conductivity.
Description
Technical Field
The utility model relates to the technical field of plastic processing of metal materials, in particular to a pipe-plate connecting device based on electromagnetic pulse and elastic particle media.
Background
The connection of metal pipes and plate structures has wide application in real life, such as connection of water supply pipeline box and water pipe in daily life, connection of oil tank and oil pipeline in automobile and aerospace craft, connection of airplane operation rod, and connection between metal and nonmetal materials. Therefore, the research on the connection mode of the pipe and the plate has important practical value.
The electromagnetic pulse forming technology is an emerging high-energy forming method, and is a technology for forcing a plate material to be formed at a high speed under the action of impact electromagnetic force by utilizing an instantaneous high-voltage pulse magnetic field. The forming speed is high, and compared with the conventional stamping forming, the plastic deformation capability of the material can be effectively improved. When the electromagnetic pulse is formed, the part is stuck to the die at a very high speed, and the impact force between the part and the die is very large, so that the die sticking performance of the part is improved, the rebound of the part can be effectively reduced, the forming precision is improved, meanwhile, the electromagnetic pulse forming processing efficiency is high, the time is short, and the production automation is convenient to realize.
However, in the traditional electromagnetic pulse forming process, pulse current is introduced into a forming coil, a magnetic field changing along with time is generated in the metal plate area, meanwhile, an eddy current resisting the change of the magnetic field can be induced in the metal plate to ensure that the interaction between the magnetic field and the eddy current is realized, and huge electromagnetic force is instantaneously generated, so that the metal plate is subjected to plastic deformation. The main problems of the method are as follows:
(1) The current required by the electromagnetic force for forming the workpiece is the eddy current induced in the metal material due to the electromagnetic induction, the size of the eddy current is directly related to the conductivity of the metal material, and the eddy current is generally suitable for forming materials with high conductivity characteristics such as aluminum and copper plates, but the existing technology cannot provide electromagnetic forming force required by the deformation of the materials for the metal materials with poor conductivity (such as titanium alloy, steel and the like).
(2) The size and the direction of the eddy current in the workpiece are directly related to the distribution and the change characteristics of the forming magnetic field generated by the coil, the two are not independently regulated and controlled due to strong relevance, and accordingly, the distribution characteristics of electromagnetic forming force are difficult to adjust according to actual needs. As in the conventional forming process, the forming is generally performed by generating a repulsive force between the workpiece and the coil, and the attractive force forming is difficult to achieve.
The above problems limit the forming ability and application range of electromagnetic forming technology.
Disclosure of Invention
The utility model provides a pipe-plate connecting device based on electromagnetic pulse and elastic particle media, and aims to solve the problems that irreversible production defects such as cracks are easy to generate due to larger electromagnetic force in the process of connecting a thin-wall pipe-plate in the prior art, and forming force is insufficient due to small induced eddy of a material with low conductivity.
The utility model adopts the following technical scheme.
The device comprises a punch (13) driven by electromagnetic pulses, wherein when the punch works, elastic particle media (15), an isolating elastic pad (17), a metal plate (16) and a metal pipe (20) are sequentially arranged in the impact direction of the punch; the elastic particle medium is arranged in a first through cavity of the upper female die (14), the punch is slidably arranged at the upper end of the first through cavity of the upper female die, and the lower end of the pipe cavity is separated from the metal plate by an isolation elastic pad; the connecting end of the metal pipe fitting is arranged at the top of the lower female die (18), and the impact force of the punch drives the metal plate to impact the connecting end of the metal pipe fitting through the elastic particle medium and the isolation elastic pad so as to connect the metal plate and the connecting end.
The upper female die is used for fixing the metal plate by isolating the elastic pad; the metal pipe fitting is placed in the lower die, and the connecting end of the metal pipe fitting is placed at the split washer (19).
The connecting device comprises an electromagnetic pulse generating unit, an impact unit, a forming connecting unit and a combining unit;
the electromagnetic pulse generation unit comprises a guide sleeve fixed on the lower surface of an upper die base plate (2) of the connecting device frame, a flat coil (5) is fixed on the inner top of the guide sleeve, and a power supply circuit of the flat coil is connected with an external circuit;
the impact unit comprises a guide sleeve (3); the lower part of the inner cavity of the guide sleeve is provided with a driving plate (7) which can move up and down along the inner wall of the guide sleeve, the lower end of the driving plate is fixedly provided with a punch plate (8), the lower surface of the punch plate is fixedly connected with a stress wave amplifier (9), the lower end of the stress wave amplifier is fixedly connected with a punch, and the punch is connected with an upper female die of a forming connecting unit.
The frame of the connecting device is of a three-plate four-column type open structure and comprises a supporting screw (1) and an upper die seat plate, a middle die seat plate (11), a lower die seat plate (23) and a forming connecting unit and a supporting frame (22) which are fixed on the lower die seat plate from top to bottom, wherein the upper die seat plate, the middle die seat plate and the lower die seat plate are fixedly connected through the supporting screw;
the positioning structure for fixing the metal pipe is connected with the lower female die through a fastener, the upper female die is opposite to the lower female die in an up-down mode, and the positioning structure is fixed on a support frame placed in a central groove of a lower die base plate through the fastener;
the combined unit comprises an upper die seat plate, a middle die seat plate, a lower die seat plate, a linear ball bearing, a spring, a bolt, a nut and a screw rod, so that all the units are connected into an integral structure capable of stably and reliably completing the connection process.
The guide sleeve is fixedly connected with the upper die base plate through a fastener, and a notch is formed in one side of the guide sleeve, so that one side of the flat coil, which is connected with an external circuit, can be placed in the guide sleeve;
the flat coil is fixedly wound inside an insulating framework of the flat coil through glass fiber cloth and insulating glue; the middle part of the insulating framework is a boss, a through hole is formed in the edge of the boss, a connector for leading out a flat coil is connected with a discharge loop (24) of an external circuit, and a base plate molded by an elastic insulating material is placed on the flat coil.
The stress wave amplifier is supported at the middle die seat plate by a spring (10) and is slidably arranged in a linear ball bearing (12) of the middle die seat plate, and the linear ball bearing is fixed at a through hole at the center part of the middle die seat plate;
the stress wave amplifier and the punch are fixedly connected through a threaded structure to form a combined body penetrating through a spring (10), and the axis of the spring is coincident with the axes of the stress wave amplifier and the punch to form a buffer structure between the middle die base plate and the impact unit.
The forming connection unit comprises an upper female die and a lower female die; the upper female die is vertically provided with a first through cavity from top to bottom; the lower die is internally provided with a second through cavity which is vertically arranged from top to bottom, the first through cavity of the upper die is provided with a forming concave part for placing a metal plate, meanwhile, the cavity below the punch is filled with elastic particle media, the elastic particle media are separated from the metal plate which is used for forming connection by isolating an elastic pad, the second through cavity of the lower die is provided with a concave part for placing a split washer, and an open-pore shaft core (21) for fixing the metal pipe is arranged at the same time.
The upper female die and the lower female die are of hollow flange-shaped structures; the open-pore axle core is solid cylinder structure, and open in bottom both sides has the locating hole, is fixed in with lower die department through the fastener.
The upper female die and the lower female die are fixed at the central groove of the lower die holder through a supporting frame (22), the supporting frame is a hollow four-sided column, grooves with the same diameter as the upper female die and the lower female die are arranged on the cylindrical surface of the supporting frame, and the upper female die and the lower female die are connected through fasteners.
Compared with the prior art, the utility model has the following excellent effects: the utility model applies the electromagnetic forming process and the elastic particle medium to the connection of metal tubes and plates, the electromagnetic forming belongs to high-energy-rate forming, the plastic deformation capability of materials can be improved, the connection can be completed quickly, meanwhile, the connection of the tubes and the plates with low conductivity can be realized under the action of elastic particles, the production efficiency is high, the connection of the tubes and the plates with various specifications can be realized, and the production cost is reduced.
Drawings
The utility model is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic view of the front cross-sectional structure of the device of the present utility model;
FIG. 2 is a schematic perspective view of the device of the present utility model;
FIG. 3 is a schematic diagram of a stress wave amplifier of the apparatus of the present utility model;
FIG. 4 is a schematic view of the split washer construction of the device of the present utility model;
FIG. 5 is a schematic diagram of the structure of the female die on the device connecting unit of the present utility model;
FIG. 6 is a schematic diagram of the lower die structure of the device connecting unit of the present utility model;
FIG. 7 is a schematic view of the structure of a supporting frame of the connecting unit of the device;
FIG. 8 is a schematic diagram of the connection principle of the device of the present utility model;
in the figure: 1-supporting a screw; 2-an upper die holder plate; 3-guiding sleeve; 4-an insulating framework; 5-plate coil; 6-backing plate; 7-a drive plate; 8-punch plate; 9-stress wave amplifier; 10-springs; 11-middle die plate; 12-linear ball bearings; 13-a punch; 14-upper female die; 15-an elastic particulate medium; 16-sheet metal parts; 17-insulating elastic pad; 18-a lower female die; 19-split washers; 20-metal pipe fitting; 21-perforating the shaft core; 22-supporting frames; 23-a lower die base plate; 24-discharge loop.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific examples described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in the figure, the device comprises a punch 13 driven by electromagnetic pulse, and the punch is operated, and the elastic particle medium 15, the isolating elastic pad 17, the metal plate 16 and the metal pipe 20 are sequentially arranged in the impact direction of the punch; the elastic particle medium is arranged in the first through cavity of the upper female die 14, the punch is slidably arranged at the upper end of the first through cavity of the upper female die, and the lower end of the pipe cavity is separated from the metal plate by an isolation elastic pad; the connecting end of the metal pipe fitting is arranged at the top of the lower die 18, and the impact force of the punch drives the metal plate to impact the connecting end of the metal pipe fitting through the elastic particle medium and the isolation elastic pad so as to connect the metal plate and the metal pipe fitting.
The upper female die is used for fixing the metal plate by isolating the elastic pad; the metal tube is placed in the lower die with its connecting end placed at split washer 19.
The connecting device comprises an electromagnetic pulse generating unit, an impact unit, a forming connecting unit and a combining unit;
the electromagnetic pulse generating unit comprises a guide sleeve 3 fixed on the lower surface of an upper die base plate 2 of the connecting device frame, a flat coil 5 is fixed on the inner top of the guide sleeve, and a power supply circuit of the flat coil is connected with an external circuit;
the impact unit comprises a guide sleeve 3; the lower part of the inner cavity of the guide sleeve is provided with a driving plate 7 which can move up and down along the inner wall of the guide sleeve, the lower end of the driving plate is fixedly provided with a punch plate 8, the lower surface of the punch plate is fixedly connected with a stress wave amplifier 9, the lower end of the stress wave amplifier is fixedly connected with a punch, and the punch is connected with an upper female die of a forming connecting unit.
The frame of the connecting device is of a three-plate four-column type open structure and comprises a supporting screw 1, an upper die seat plate, a middle die seat plate 11, a lower die seat plate 23, a forming connecting unit and a supporting frame 22, wherein the upper die seat plate, the middle die seat plate and the lower die seat plate are arranged from top to bottom and are fixedly connected through the supporting screw;
the positioning structure for fixing the metal pipe is connected with the lower female die through a fastener, the upper female die is opposite to the lower female die in an up-down mode, and the positioning structure is fixed on a support frame placed in a central groove of a lower die base plate through the fastener;
the combined unit comprises an upper die seat plate, a middle die seat plate, a lower die seat plate, a linear ball bearing, a spring, a bolt, a nut and a screw rod, so that all the units are connected into an integral structure capable of stably and reliably completing the connection process.
The guide sleeve is fixedly connected with the upper die base plate through a fastener, and a notch is formed in one side of the guide sleeve, so that one side of the flat coil, which is connected with an external circuit, can be placed in the guide sleeve;
the flat coil is fixedly wound in the insulating framework 4 of the flat coil through glass fiber cloth and insulating glue; the middle part of the insulating framework is a boss, a through hole is formed in the edge of the boss, a connector for leading out a flat coil is connected with a discharge loop 24 of an external circuit, and a base plate 6 formed by elastic insulating materials is placed on the flat coil.
The stress wave amplifier is supported at the middle die plate by a spring 10 and is slidingly arranged in a linear ball bearing 12 of the middle die plate, and the linear ball bearing is fixed at a through hole at the center part of the middle die plate;
the stress wave amplifier and the punch are fixedly connected through a threaded structure to form a combined body penetrating through the spring 10, and the axis of the spring is coincident with the axes of the stress wave amplifier and the punch to form a buffer structure between the middle die seat plate and the impact unit.
The forming connection unit comprises an upper female die and a lower female die; the upper female die is vertically provided with a first through cavity from top to bottom; the lower die is internally provided with a second through cavity which is vertically arranged from top to bottom, the first through cavity of the upper die is provided with a forming concave part for placing a metal plate, meanwhile, the cavity below the punch is filled with elastic particle media, the elastic particle media are separated from the metal plate which is used for forming connection by isolating an elastic pad, the second through cavity of the lower die is provided with a concave part for placing a split washer, and an open-pore shaft core 21 for fixing the metal pipe is arranged at the same time.
The upper female die and the lower female die are of hollow flange-shaped structures; the open-pore axle core is solid cylinder structure, and open in bottom both sides has the locating hole, is fixed in with lower die department through the fastener.
The upper female die and the lower female die are fixed at the central groove of the lower die holder through a support frame 22, the support frame is a hollow four-sided column, grooves with the same diameter as the upper female die and the lower female die are arranged on the cylindrical surface of the support frame, and the upper female die and the lower female die are connected through fasteners.
Examples:
in this example, the method for using the electromagnetic pulse and elastic particle medium tube-plate connection device includes the following steps;
step one, installing an electromagnetic pulse unit and an impact unit, which specifically comprises the following steps: the guide sleeve is fixed on the lower surface of the upper die base plate through bolts, and then the flat coil, the driving plate, the punch plate, the stress wave amplifier and the spring are sequentially arranged, and the stress wave amplifier can slide up and down through the linear bearing of the middle die base plate. Then the punch is connected with the stress wave amplifier through screws and is placed into an upper female die to finish installation;
step two, installing a formed connecting unit, which specifically comprises the following steps: the metal pipe fitting is fixed on the lower female die through the perforated shaft core, the split washer is placed in the cavity of the lower die base plate, the upper surface of the split washer is flush with the metal pipe fitting, then the metal plate is placed, the plate is fixed in the cavity of the upper female die and isolated from the elastic particle medium through the rubber pad, and the upper female die and the lower female die are fixed on the support frame through bolts, so that the installation is completed;
step three, installing a combined unit, which specifically comprises the following steps: the units which are connected into a whole in a harmonious way through the upper die base plate, the middle die base plate, the lower die base plate and the supporting rods, and the connection of the pipe and the plate is completed stably;
fourth, discharging, specifically: after the power supply passes through the transformer, a current limiting resistor of a rectifier silicon stack charges a capacitor bank, when a power switch is disconnected after the charging is finished, when the voltage of the capacitor bank reaches the required discharge voltage, the discharge switch is closed, the energy of the capacitor is released, a section of rapidly-changed impact current is generated in a coil loop of a flat coil, a strong magnetic field is generated around the flat coil, the magnetic field enables a driving plate coupled with the flat coil to generate induced current, and then an eddy current magnetic field is generated, strong eddy current repulsive force is generated through interaction of the two magnetic fields, the output force of a stress wave amplifier is formed, the output force is continuously reflected and transmitted when being transmitted in the stress wave amplifier, a waveform and peak value of the output stress are formed, the changed output stress is transmitted to a punch head, elastic particle media are compressed in an upper die, the rubber pad of an insulation plate is deformed, and therefore a metal pipe fitting-metal plate fitting is bent close to and mutually collided, and connection is completed in an extremely short time;
step five, taking out the workpiece, which is specifically as follows: and (3) removing the punch, taking out the upper female die and the lower female die which are fixed on the support frame together, loosening the fixing screw, taking out the punch and the elastic particle medium, and finally separating the upper female die from the lower female die to obtain a pipe-plate connection finished product.
Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise indicated, if they disclose a range of values, then the disclosed range of values is a preferred range of values, and any person skilled in the art will appreciate that the preferred range of values is merely a relatively obvious or representative value of many possible values. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.
Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present utility model. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (7)
1. An electromagnetic pulse and elastic particle medium based pipe-plate connection device is characterized in that: the device comprises a punch (13) driven by electromagnetic pulses, wherein when the punch works, an elastic particle medium (15), an insulating elastic pad (17), a metal plate (16) and a metal pipe (20) are sequentially arranged in the impact direction of the punch; the elastic particle medium is arranged in a first through cavity of the upper female die (14), the punch is slidably arranged at the upper end of the first through cavity of the upper female die, and the lower end of the pipe cavity is separated from the metal plate by an isolation elastic pad; the connecting end of the metal pipe fitting is arranged at the top of the lower female die (18), and the impact force of the punch drives the metal plate to impact the connecting end of the metal pipe fitting through an elastic particle medium and an isolated elastic pad so as to connect the two;
the upper female die is used for fixing the metal plate by isolating the elastic pad; the metal pipe fitting is placed in the lower die, and the connecting end of the metal pipe fitting is placed at the split washer (19).
2. A tube-plate connection based on electromagnetic pulses and elastic particulate media according to claim 1, characterized in that: the connecting device comprises an electromagnetic pulse generating unit, an impact unit, a forming connecting unit and a combining unit;
the electromagnetic pulse generation unit comprises a guide sleeve fixed on the lower surface of an upper die base plate (2) of the connecting device frame, a flat coil (5) is fixed on the inner top of the guide sleeve, and a power supply circuit of the flat coil is connected with an external circuit;
the impact unit comprises a guide sleeve (3); the lower part of the inner cavity of the guide sleeve is provided with a driving plate (7) which can move up and down along the inner wall of the guide sleeve, the lower end of the driving plate is fixedly provided with a punch plate (8), the lower surface of the punch plate is fixedly connected with a stress wave amplifier (9), the lower end of the stress wave amplifier is fixedly connected with a punch, and the punch is connected with an upper female die of a forming connecting unit.
3. A tube-plate connection based on electromagnetic pulses and elastic particulate media according to claim 2, characterized in that: the frame of the connecting device is of a three-plate four-column type open structure and comprises a supporting screw (1) and an upper die seat plate, a middle die seat plate (11), a lower die seat plate (23) and a forming connecting unit and a supporting frame (22) which are fixed on the lower die seat plate from top to bottom, wherein the upper die seat plate, the middle die seat plate and the lower die seat plate are fixedly connected through the supporting screw;
the upper female die is connected with the lower female die through a fastener, and is opposite to the lower female die in the up-down direction and fixed on a support frame placed in a central groove of the lower die base plate through the fastener;
the combined unit comprises an upper die seat plate, a middle die seat plate, a lower die seat plate, a linear ball bearing, a spring, a bolt, a nut and a screw rod, so that all the units are connected into an integral structure capable of stably and reliably completing the connection process.
4. A tube-plate connection based on electromagnetic pulses and elastic particulate media according to claim 2, characterized in that: the guide sleeve is fixedly connected with the upper die base plate through a fastener, and a notch is formed in one side of the guide sleeve, so that one side of the flat coil, which is connected with an external circuit, can be placed in the guide sleeve;
the flat coil is fixedly wound inside an insulating framework of the flat coil through glass fiber cloth and insulating glue; the middle part of the insulating framework is a boss, a through hole is formed in the edge of the boss and used for leading out a joint of the flat coil to be connected with a discharge loop (24) of an external circuit, and a backing plate formed by an elastic insulating material is arranged on the flat coil;
the stress wave amplifier is supported at the middle die seat plate by a spring (10) and is slidably arranged in a linear ball bearing (12) of the middle die seat plate, and the linear ball bearing is fixed at a through hole at the center part of the middle die seat plate;
the stress wave amplifier and the punch are fixedly connected through a threaded structure to form a combined body penetrating through a spring (10), and the axis of the spring is coincident with the axes of the stress wave amplifier and the punch to form a buffer structure between the middle die base plate and the impact unit.
5. A tube-plate connection based on electromagnetic pulses and elastic particulate media according to claim 2, characterized in that: the forming connection unit comprises an upper female die and a lower female die; the upper female die is vertically provided with a first through cavity from top to bottom; the lower die is internally provided with a second through cavity which is vertically arranged from top to bottom, the first through cavity of the upper die is provided with a forming concave part for placing a metal plate, meanwhile, the cavity below the punch is filled with elastic particle media, the elastic particle media are separated from the metal plate which is used for forming connection by isolating an elastic pad, the second through cavity of the lower die is provided with a concave part for placing a split washer, and an open-pore shaft core (21) for fixing the metal pipe is arranged at the same time.
6. An electromagnetic pulse and elastic particle medium tube-plate connection device according to claim 5, characterized in that: the upper female die and the lower female die are of hollow flange-shaped structures; the open-pore axle core is solid cylinder structure, and open in bottom both sides has the locating hole, is fixed in with lower die department through the fastener.
7. A tube-plate connection based on electromagnetic pulses and elastic particulate media according to claim 2, characterized in that: the upper female die and the lower female die are fixed at the central groove of the lower die holder through a supporting frame (22), the supporting frame is a hollow four-sided column, grooves with the same diameter as the upper female die and the lower female die are arranged on the cylindrical surface of the supporting frame, and the upper female die and the lower female die are connected through fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320067126.5U CN219464556U (en) | 2023-01-10 | 2023-01-10 | Pipe-plate connecting device based on electromagnetic pulse and elastic particle medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320067126.5U CN219464556U (en) | 2023-01-10 | 2023-01-10 | Pipe-plate connecting device based on electromagnetic pulse and elastic particle medium |
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| Publication Number | Publication Date |
|---|---|
| CN219464556U true CN219464556U (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320067126.5U Active CN219464556U (en) | 2023-01-10 | 2023-01-10 | Pipe-plate connecting device based on electromagnetic pulse and elastic particle medium |
Country Status (1)
| Country | Link |
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| CN (1) | CN219464556U (en) |
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2023
- 2023-01-10 CN CN202320067126.5U patent/CN219464556U/en active Active
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