Long-service-life electromagnetic drive loading device and electromagnetic riveting device

Abstract

The utility model belongs to the technical field of electromagnetic loading, and particularly relates to a long-service-life electromagnetic drive loading device and an electromagnetic riveting device, which comprise a discharge coil arranged on a coil framework. A discharge coil and a coil framework are mounted in the metal magnetic conductive shell; the annular driving sheet is mounted on the driving sheet framework, and the annular driving sheet and the discharge coil are oppositely arranged; a cooling channel used for cooling the annular driving piece is arranged in the driving piece framework. The amplifier is fixedly connected with the driving sheet framework, and the amplifier is used for installing a driven part; the metal reset guide rod is arranged in the metal magnetic conductive shell, penetrates through the coil framework and the driving sheet framework and then is fixedly connected with the amplifier, and a reset piece is arranged on the metal reset guide rod; according to the utility model, the heat dissipation capability of the coil is improved, thereby improving the electromagnetic driving efficiency and prolonging the service life.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electromagnetic loading, specifically relates to a long -life electromagnetic drive loading device and electromagnetic riveting device. BACKGROUND

[0002] The electromagnetic riveting equipment is composed of a discharging device and a riveting device, and the electromagnetic riveting equipment converts electric energy into kinetic energy by storing and releasing energy, so that the rivets are riveted.

[0003] In electromagnetic riveting, the control of the forming force is the key to forming. Generally speaking, improving the forming force will help to broaden its application field. In order to improve the forming force, the discharge current through the coil needs to be improved. The greater the discharge current through the coil, the greater the heat generated in the coil, and the shorter the service life of the coil; the increase rate of the loss power exceeds the increase rate of the input power, and the electromagnetic drive efficiency will be reduced. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a long -life electromagnetic drive loading device and electromagnetic riveting device, improve the heat dissipation capacity of the coil, and thus improve the efficiency and service life of the electromagnetic drive.

[0005] The utility model embodiment provides a long -life electromagnetic drive loading device, which comprises:

[0006] The discharge coil is installed on the coil framework;

[0007] The metal magnetic conductive shell is internally provided with the discharge coil and the coil framework;

[0008] The annular driving piece is installed on the driving piece framework, and the annular driving piece and the discharge coil are oppositely arranged; the driving piece framework is internally provided with a cooling channel for cooling the annular driving piece;

[0009] The amplifier is fixedly connected with the driving piece framework, and the amplifier is used for installing the driven member;

[0010] The metal reset guide rod is arranged in the metal magnetic conductive shell and is fixedly connected with the amplifier after penetrating through the coil framework and the driving piece framework, and the metal reset guide rod is provided with a reset member.

[0011] Preferably, the driving piece framework is a double-layer sleeve structure, the metal reset guide rod is slidingly connected in the inner layer sleeve, and the annular driving piece is installed at the opening end between the inner and outer layer sleeves.

[0012] Preferably, the cavity between the inner and outer layer sleeves is configured as a cooling channel, and the cooling medium is guided to flow along a preset path to realize heat dissipation.

[0013] Preferably, a cooling pipe is provided in the cavity between the inner and outer sleeves, the cooling pipe is a cooling channel, and the cooling pipe is attached to the annular drive plate.

[0014] Preferably, the metal magnetic outer shell is a cylindrical structure, and a portion of the drive plate skeleton is located inside the cylindrical cavity of the cylindrical structure.

[0015] Preferably, a gap is provided between the metal magnetic shell and the outer sleeve of the drive plate skeleton. When the drive plate skeleton moves, air enters the space between the annular drive plate and the discharge coil through the gap, forming a cooling channel to cool the discharge coil.

[0016] Preferably, the coil frame has a double-layer sleeve structure, with a metal reset guide rod slidably connected inside the inner sleeve, and the discharge coil is installed between the inner and outer sleeves.

[0017] Preferably, the discharge coil is further connected to an external wire, which passes through the coil frame and the metal magnetic housing and is connected to the discharge device.

[0018] Preferably, the reset component is a reset spring, which is mounted on a metal reset guide rod and located between the end of the metal reset guide rod and the metal magnetic outer shell.

[0019] This utility model provides an electromagnetic riveting device, including the aforementioned high-life electromagnetic drive loading device.

[0020] The beneficial effects of this invention are that a cooling channel is provided in the drive plate skeleton, and a cooling medium is introduced to cool the annular drive plate when the electromagnetic drive loading device is working; when the annular drive plate is reset, it is close to the discharge coil, which also has a cooling effect on the discharge coil, thereby reducing the risk of high temperature failure and improving the service life of the discharge coil.

[0021] After the annular drive plate is driven, a gas cavity is formed between the discharge coil and the annular drive plate. During cavity formation, due to Bernoulli's principle, airflow flows into the gap between the drive plate frame and the metal magnetic outer shell, cooling the discharge coil to a certain extent, thus reducing the risk of high-temperature failure and extending the discharge coil's lifespan. When the metal reset rod is reset by the reset spring, it expels the hot gas from the cavity, and this cycle continues, improving heat dissipation.

[0022] Both the metal magnetic shell and the metal reset rod are designed with materials with good magnetic permeability, which can distribute more of the magnetic field lines formed by the discharge coil around them, thereby increasing the magnetic flux through the ring drive plate.

[0023] The driving plate of this invention is a ring-shaped driving plate, which has a smaller volume, higher forming force, and higher material utilization. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the air-cooled channel of this utility model.

[0026] Figure 3 This is a schematic diagram illustrating the principle of electromagnetic drive in this invention.

[0027] In the diagram, 1 is the coil frame, 2 is the discharge coil, 3 is the ring-shaped drive plate, 4 is the drive plate frame, 5 is the amplifier, 6 is the external wire, 7 is the metal magnetic shell, 8 is the metal reset rod, 9 is the reset spring, 10 is the cooling channel, and 11 is the air cooling channel. Detailed Implementation

[0028] Example 1

[0029] like Figure 1 As shown, this utility model embodiment provides a high-life electromagnetic drive loading device, comprising:

[0030] Discharge coil 2, which is mounted on coil frame 1;

[0031] A magnetically conductive metal outer shell 7, inside which a discharge coil 2 and a coil frame 1 are installed;

[0032] An annular drive plate 3 is mounted on a drive plate frame 4, and the annular drive plate 3 and the discharge coil 2 are arranged opposite to each other; the drive plate frame 4 is provided with a cooling channel 10 for cooling the annular drive plate 3.

[0033] Amplifier 5, which is fixedly connected to the drive plate frame 4, and amplifier 5 is used to mount the driven component;

[0034] A metal reset guide rod 8 is disposed inside the metal magnetic housing 7, and passes through the coil frame 1 and the drive plate frame 4 before being fixedly connected to the amplifier 5. A reset component is provided on the metal reset guide rod 8.

[0035] The outermost layer of this utility model is a metal magnetic shell 7, inside which a coil frame 1 is provided. Both the coil frame 1 and the metal magnetic shell 7 are provided with through holes, and a metal reset guide rod 8 is slidably connected in the through holes.

[0036] This invention provides a cooling channel 10 inside the drive plate frame 4 for cooling the annular drive plate 3. Air or cooling water can be introduced into the cooling channel 10. The cooling channel 10 is in direct contact with the annular drive plate 3 and can cool the annular drive plate 3. At the same time, the annular drive plate 3 is close to the discharge coil 2 and can cool the discharge coil 2, thereby reducing the risk of high temperature failure and improving the service life of the discharge coil 2.

[0037] The driving plate of this invention is a ring-shaped driving plate 3, which is evenly distributed on the metal reset guide rod 8. Its force can be concentrated on the metal reset guide rod 8, and the driving can be achieved with very little volume and material.

[0038] The drive plate frame 4 has a double-sleeve structure. A metal reset guide rod 8 is slidably connected inside the inner sleeve. The annular drive plate 3 is installed at the open end between the inner and outer sleeves. The annular drive plate 3 can form a closed space with the inner and outer sleeves to serve as a cooling channel 10 (i.e., the cavity between the inner and outer sleeves is configured as a cooling channel 10), guiding the cooling medium to flow along a preset path to achieve heat dissipation. Alternatively, the annular drive plate 3 may not form a closed space with the inner and outer sleeves. In this case, a cooling pipe is provided in the cavity between the inner and outer sleeves, and the cooling pipe contains the cooling channel 10. The cooling pipe is fitted to the annular drive plate 3. On the one hand, the drive plate skeleton 4 with a double-layer sleeve structure can form a stable connection structure with the annular drive plate 3, and the connection is highly secure. On the other hand, the cooling channel 10 is directly attached to the back of the annular drive plate 3 (the side opposite to the discharge coil 2), which does not affect the interaction between the annular drive plate 3 and the discharge coil 2, and can also directly cool down the annular drive plate 3 and the discharge coil 2. Moreover, the double-layer sleeve structure can form a closed area, which facilitates the flow of the cooling medium and reduces the installation size while ensuring the heat dissipation effect.

[0039] The metal magnetically conductive outer shell 7 is a cylindrical structure, and a portion of the drive plate skeleton 4 is located within the inner cavity of the cylindrical structure. For example... Figure 1 As shown, the cylindrical wall of the cylindrical structure does not completely cover the drive plate frame 4. Simultaneously, a gap is provided between the metal magnetic outer shell 7 and the outer sleeve of the drive plate frame 4. When the drive plate frame 4 moves, air enters from the gap into the space between the annular drive plate 3 and the discharge coil 2, forming a cooling channel 11 to cool the discharge coil 2. Specifically... Figure 2As shown, a portion of the drive plate skeleton 4 is located inside the inner cavity of the cylindrical structure, ensuring that the drive plate skeleton 4 remains within the inner cavity of the cylindrical structure within the range of maximum and minimum stroke of the annular drive plate 3. Therefore, the gap always forms a narrow air passage. During the change of the relative distance between the annular drive plate 3 and the discharge coil 2, air can only enter the space between the annular drive plate 3 and the discharge coil 2 through the gap. The size of the space between the annular drive plate 3 and the discharge coil 2 changes drastically during loading, resulting in a very high airflow velocity through the gap, which can effectively and directly dissipate heat from the annular drive plate 3 and the discharge coil 2.

[0040] The coil frame 1 is a double-layer sleeve structure (made of a non-magnetic and non-conductive material), including an inner sleeve and an outer sleeve. A metal reset guide rod 8 is slidably connected inside the inner sleeve. The discharge coil 2 is installed between the inner and outer sleeves. The discharge coil 2 is also connected to an external wire 6, which passes through the coil frame 1 and the metal magnetic outer shell 7 to connect to the discharge device. The outer sleeve of the coil frame 1 and the wall of the metal magnetic outer shell 7 are fitted together, making the coil frame 1 and the metal magnetic outer shell 7 firmly fixed and easy to install.

[0041] The reset component is a reset spring 9, which is fitted onto the metal reset guide rod 8 and located between the end of the metal reset guide rod 8 and the metal magnetic housing 7. The reset spring 9 resets the metal reset guide rod 8, facilitating repeated operation.

[0042] Example 2

[0043] An electromagnetic riveting device includes a high-life electromagnetic drive loading device, an amplifier 5 housing a driven component, such as a punch, and a discharge device storing voltage and charging a capacitor as needed. When discharge begins, a high-frequency AC pulse current flows into the discharge coil 2 within the electromagnetic riveting device. Through the magnetic field surrounding the discharge coil 2, an annular drive plate 3 generates an induced current and an induced magnetic field. These forces push the annular drive plate away from the discharge coil 2, causing the metal reset guide rod 8 to move along its axis and ultimately strike the rivet, achieving rapid riveting.

[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0045] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A long-life electromagnetic drive loading device, characterized in that, include: Discharge coil (2), the discharge coil (2) is mounted on coil frame (1); A metal magnetic housing (7) is provided, and a discharge coil (2) and a coil frame (1) are installed inside the metal magnetic housing (7). An annular drive plate (3) is mounted on a drive plate frame (4), and the annular drive plate (3) and the discharge coil (2) are arranged opposite to each other; the drive plate frame (4) is provided with a cooling channel (10) for cooling the annular drive plate (3). Amplifier (5), which is fixedly connected to the drive plate frame (4), and amplifier (5) is used to mount the driven component; The metal reset guide rod (8) is located inside the metal magnetic shell (7) and passes through the coil frame (1) and the drive plate frame (4) before being fixedly connected to the amplifier (5). The metal reset guide rod (8) is provided with a reset component.

2. The high-life electromagnetic drive loading device as described in claim 1, characterized in that, The drive plate skeleton (4) is a double-layer sleeve structure. A metal reset guide rod (8) is slidably connected inside the inner sleeve. The annular drive plate (3) is installed at the open end between the inner and outer sleeves.

3. The high-life electromagnetic drive loading device as described in claim 2, characterized in that, The cavity between the inner and outer sleeves is configured as a cooling channel (10) to guide the cooling medium to flow along a preset path to achieve heat dissipation.

4. The high-life electromagnetic drive loading device as described in claim 2, characterized in that, A cooling pipe is provided in the cavity between the inner and outer sleeves, and the cooling pipe is a cooling channel (10). The cooling pipe is attached to the annular drive plate (3).

5. The high-life electromagnetic drive loading device as described in claim 1, characterized in that, The metal magnetic shell (7) is a cylindrical structure, and a part of the drive plate skeleton (4) is located in the inner cavity of the cylindrical structure.

6. The high-life electromagnetic drive loading device as described in claim 5, characterized in that, A gap is provided between the outer sleeve of the metal magnetic shell (7) and the drive plate skeleton (4). When the drive plate skeleton (4) moves, air enters the space between the annular drive plate (3) and the discharge coil (2) through the gap, forming a wind-cooling channel (11) to cool the discharge coil (2).

7. The high-life electromagnetic drive loading device as described in any one of claims 1, 5-6, characterized in that, The coil frame (1) is a double-layer sleeve structure, with a metal reset guide rod (8) slidably connected inside the inner sleeve, and the discharge coil (2) is installed between the inner and outer sleeves.

8. The high-life electromagnetic drive loading device according to any one of claims 1-6, characterized in that, The discharge coil (2) is also connected to an external wire (6), which passes through the coil frame (1) and the metal magnetic shell (7) and is connected to the discharge device.

9. The high-life electromagnetic drive loading device according to any one of claims 1-6, characterized in that, The reset component is a reset spring (9), which is mounted on a metal reset guide rod (8) and is located between the end of the metal reset guide rod (8) and the metal magnetic shell (7).

10. An electromagnetic riveting device, characterized in that, Including the high-life electromagnetic drive loading device as described in any one of claims 1-9.

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