Holding type electromagnet

Abstract

The utility model relates to the technical field of electromagnets, and discloses a retaining type electromagnet which comprises a shell and a bottom plate, one end of the shell is provided with a sealing ring, the other end of the shell is provided with an installation ring, the installation ring is connected with a dustproof cover, the dustproof cover is in a boss shape, a permanent magnet is installed in the shell, and the bottom plate is provided with a sealing ring. A photoelectric switch plate is fixedly mounted on the bottom plate, a detection head is arranged on the photoelectric switch plate, the photoelectric switch plate is perpendicular to the bottom plate, the photoelectric switch plate is connected with an assembly sleeve, a baffle is arranged in the assembly sleeve, the baffle is movably matched with the detection head, a T-shaped groove is formed in the assembly sleeve, and the detection head is arranged in the T-shaped groove. The retaining plate comprises a protruding end, the protruding end moves on the T-shaped groove, the permanent magnet is installed in the shell, the retaining plate is movably matched with the detection head, and the retaining plate shields the detection head to start the permanent magnet so that the retaining type electromagnet can still maintain a working state when current is closed.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnets, in particular to a holding type electromagnet. Background Art

[0002] The holding electromagnet mainly changes the magnetic field quickly by controlling the amount of current in the winding. When the electromagnet is energized, the magnetic field will be concentrated in the center of the iron core, and no magnetic force will be generated anywhere else except the iron core. The electromagnet can generate a strong adsorption force when energized. Installing it in automated equipment can stop or move the adsorbed object. It is widely used in automated distribution production lines, sorting machines, clutch component manufacturing, etc.

[0003] According to the Chinese patent publication number "CN206976108U", a patent document named "a holding electromagnet" is disclosed. The device uses a magnetic steel component installed between the shell and the static iron core. During use, the holding electromagnet needs to be continuously supplied with current to maintain the magnetic field. When the current is turned off, the magnetic field disappears immediately, resulting in a large amount of electricity consumption during use. At the same time, when the holding electromagnet is used in factory production, a large amount of impurities, dust and moisture will enter the holding electromagnet, affecting the normal operation of the holding electromagnet and causing the holding electromagnet to corrode and rust. The disassembly and replacement of the holding electromagnet will result in additional waste of manpower and resources.

[0004] For this purpose, we designed a holding electromagnet. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the holding electromagnet consumes a lot of electric energy and the impurities and moisture affect the normal working of the holding electromagnet, and proposes a holding electromagnet.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A retaining electromagnet comprises a shell and a base plate, wherein a sealing ring is installed at one end of the shell, a mounting ring is installed at the other end of the shell, the mounting ring is connected to a dust cover, the dust cover is in the shape of a boss, a permanent magnet is installed in the shell, a photoelectric switch board is fixedly installed on the base plate, the photoelectric switch board is provided with a detection head, the photoelectric switch board is vertically arranged with the base plate, the photoelectric switch board is connected to an assembly set, a baffle is arranged inside the assembly set, the baffle is movably matched with the detection head, the assembly set is provided with a "T"-shaped groove, the baffle includes a protruding end, and the protruding end moves on the "T"-shaped groove.

[0008] Preferably, a mounting block is provided in the shell, one end of the mounting block is connected to an iron core, the other end of the mounting block is connected to a guide shaft, and the iron core is in contact with the guide shaft inside the mounting block.

[0009] Preferably, a limit spring is coaxially arranged on the iron core, one end of the limit spring is connected to a limit ring, and the other end of the limit spring is connected to a mounting block, and the limit ring is coaxially mounted with the iron core and keeps synchronous movement.

[0010] Preferably, the limit spring contracts inward in a conical shape along the direction from the mounting block to the limit ring with the iron core as the axis, the permanent magnet is coaxially arranged with the guide shaft, and the mounting ring is connected to the guide shaft.

[0011] Preferably, the dust cover is connected to the guide shaft, a push rod is installed in the dust cover, the push rod is connected to an auxiliary part, and the auxiliary part is in an arc shape.

[0012] Preferably, the guide shaft is connected to the mounting sleeve, the baffle is of a size capable of completely covering the detection head on the photoelectric switch board, the guide shaft is coaxially arranged with the mounting sleeve, and the guide shaft moves on the mounting sleeve.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model adopts a permanent magnet installed in the shell, and the baffle and the detection head are movably matched. The baffle blocks the detection head and starts the permanent magnet so that the holding electromagnet can still maintain the working state when the current is turned off.

[0015] 2. The utility model adopts a sealing ring installed at one end of the shell, and the mounting ring is connected with a dust cover. Impurities and moisture contact the retaining electromagnet and are blocked by the sealing ring and the dust cover to prevent the impurities and moisture from rusting the retaining electromagnet.

[0016] In summary, the utility model is reasonably designed, which can not only reduce the power consumption of the holding electromagnet, but also prevent the holding electromagnet from being corroded by impurities and moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a holding type electromagnet proposed by the utility model;

[0018] Figure 2 This is a diagram showing the external structure of a holding electromagnet proposed by the utility model;

[0019] Figure 3 This is a diagram showing the internal structure of a holding electromagnet proposed by the utility model;

[0020] Figure 4 This is a front cross-sectional view of a holding electromagnet proposed by the utility model;

[0021] Figure 5 This is a cross-sectional view after movement of a retaining electromagnet proposed by the utility model.

[0022] In the figure: 1. shell; 2. bottom plate; 3. mounting block; 4. iron core; 5. guide shaft; 6. limit spring; 7. limit ring; 8. assembly set; 9. mounting ring; 10. sealing ring; 11. photoelectric switch board; 12. permanent magnet; 13. ejector rod; 14. dust cover; 15. auxiliary parts; 16. baffle. DETAILED DESCRIPTION

[0023] Reference Figure 1-Figure 5 A retaining electromagnet comprises a housing 1 and a bottom plate 2, a mounting block 3 is arranged in the housing 1, one end of the mounting block 3 is connected to an iron core 4, the other end of the mounting block 3 is connected to a guide shaft 5, the iron core 4 is in contact with the guide shaft 5 inside the mounting block 3, a limiting spring 6 is coaxially arranged on the iron core 4, one end of the limiting spring 6 is connected to a limiting ring 7, the other end of the limiting spring 6 is connected to the mounting block 3, the limiting ring 7 is coaxially installed with the iron core 4 and keeps synchronous movement, the limiting spring 6 takes the iron core 4 as the axis along the mounting block 3 to the limiting ring 7 The direction is conical and inwardly contracted. When a positive voltage is applied to the coil of the holding electromagnet, the iron core 4 overcomes the tension of the limit spring 6 and makes a linear motion with the mounting block 3 as the axis (in order to more accurately show the structural relationship of the components of the device, the coil of the auxiliary structure of the holding electromagnet is no longer drawn out in the drawings of the specification). When the iron core 4 makes a linear motion with the mounting block 3 as the axis, it simultaneously drives the limit ring 7 to compress the limit spring 6. The tension of the limit spring 6 and the limit ring 7 always keep the working position of the iron core 4 stable.

[0024] A permanent magnet 12 is installed in the housing 1, a photoelectric switch board 11 is fixedly installed on the bottom plate 2, the photoelectric switch board 11 is provided with a detection head, the photoelectric switch board 11 is vertically arranged with the bottom plate 2, the photoelectric switch board 11 is connected with an assembly set 8, a baffle 16 is arranged inside the assembly set 8, the baffle 16 is movably matched with the detection head, the assembly set 8 is provided with a "T"-shaped groove, the baffle 16 includes a protruding end, and the protruding end moves on the "T"-shaped groove, the permanent magnet 12 is coaxially arranged with the guide shaft 5, the mounting ring 9 is connected to the guide shaft 5, the guide shaft 5 is connected to the assembly set 8, the size of the baffle 16 can completely cover the detection head on the photoelectric switch board 11, the guide shaft 5 is coaxially arranged with the assembly set 8, the guide shaft 5 moves on the assembly set 8, and when the iron core 4 moves, the guide shaft 5 is squeezed to do the same with the mounting block 3 as the axis The guide shaft 5 moves in a straight line direction. As the protruding length of the iron core 4 relative to the mounting block 3 is shortened, the protruding length of the guide shaft 5 relative to the mounting block 3 is increased. When the guide shaft 5 passes through the mounting sleeve 8 and the protruding end of the guide shaft 5 moves out of the mounting sleeve 8, the baffle 16 installed on the protruding end moves synchronously during the movement. The baffle 16 is blocked by the mounting sleeve 8 and can no longer move with the guide shaft 5. The baffle 16 falls off the guide shaft 5 and falls onto the bottom plate 2 in a vertical direction. At this moment, the baffle 16 completely blocks the light beam emitted by the detection head on the photoelectric switch board 11. The photoelectric switch board 11 sends a signal to turn on the permanent magnet 12. At this moment, the current is disconnected. The magnetic field emitted by the permanent magnet 12 will continue the magnetic field required by the holding electromagnet and maintain the working state of the holding electromagnet at this moment, saving a lot of electric energy.

[0025] A sealing ring 10 is installed at one end of the shell 1, and a mounting ring 9 is installed at the other end of the shell 1. The mounting ring 9 is connected to a dust cover 14, which is in the shape of a boss. The dust cover 14 is connected to the guide shaft 5. A push rod 13 is installed in the dust cover 14, and the push rod 13 is connected to an auxiliary part 15. The auxiliary part 15 is in the shape of an arc. The sealing ring 10 and the dust cover 14 block moisture and impurities outside the holding electromagnet to prevent moisture and impurities from entering the holding electromagnet and causing corrosion and rust of the holding electromagnet. Multiple auxiliary parts 15 arranged opposite to each other in the dust cover 14 limit the guide shaft 5, so that the guide shaft 5 always maintains a stable working position.

[0026] The working principle of the utility model is as follows: a sealing ring 10 is installed at one end of the shell 1, and a mounting ring 9 is installed at the other end of the shell 1. The mounting ring 9 is connected to a dust cover 14, and the dust cover 14 is in a boss shape. A permanent magnet 12 is installed in the shell 1, and a photoelectric switch board 11 is fixedly installed on the bottom plate 2. The photoelectric switch board 11 is provided with a detection head. The photoelectric switch board 11 is vertically arranged with the bottom plate 2. The photoelectric switch board 11 is connected with an assembly set 8, and a baffle 16 is arranged inside the assembly set 8. The baffle 16 is movably matched with the detection head. The assembly set 8 is provided with a "T"-shaped groove, and the baffle 16 includes a protruding end, and the protruding end moves on the "T"-shaped groove. By arranging the sealing ring 10 and the dust cover 14, impurities and moisture are blocked outside the electromagnet to prevent impurities and moisture from corroding the electromagnet. The baffle 16 blocks the detection head, and the photoelectric switch board 11 sends a signal to start the permanent magnet 12, thereby maintaining the working state of the electromagnet.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A retaining electromagnet, comprising a housing (1) and a base plate (2), characterized in that: A sealing ring (10) is installed at one end of the shell (1), and a mounting ring (9) is installed at the other end of the shell (1). The mounting ring (9) is connected to a dust cover (14), and the dust cover (14) is in the shape of a boss. A permanent magnet (12) is installed in the shell (1). A photoelectric switch board (11) is fixedly installed on the bottom plate (2). The photoelectric switch board (11) is provided with a detection head. The photoelectric switch board (11) is arranged vertically with the bottom plate (2). The photoelectric switch board (11) is connected to an assembly sleeve (8). A baffle (16) is arranged inside the assembly sleeve (8). The baffle (16) is movably matched with the detection head. The assembly sleeve (8) is provided with a "T"-shaped groove. The baffle (16) includes a protruding end, and the protruding end moves on the "T"-shaped groove.

2. A holding electromagnet according to claim 1, characterized in that: A mounting block (3) is arranged in the housing (1); one end of the mounting block (3) is connected to an iron core (4); the other end of the mounting block (3) is connected to a guide shaft (5); and the iron core (4) is in contact with the guide shaft (5) inside the mounting block (3).

3. A holding electromagnet according to claim 2, characterized in that: The iron core (4) is coaxially provided with a limit spring (6), one end of the limit spring (6) is connected to a limit ring (7), the other end of the limit spring (6) is connected to a mounting block (3), and the limit ring (7) is coaxially mounted with the iron core (4) and maintains synchronous movement.

4. A holding electromagnet according to claim 3, characterized in that: The limit spring (6) contracts inwardly in a conical shape with the iron core (4) as the axis along the direction from the mounting block (3) to the limit ring (7); the permanent magnet (12) is coaxially arranged with the guide shaft (5); and the mounting ring (9) is connected to the guide shaft (5).

5. A holding electromagnet according to claim 1, characterized in that: The dust cover (14) is connected to the guide shaft (5), a push rod (13) is installed in the dust cover (14), and the push rod (13) is connected to an auxiliary component (15), and the auxiliary component (15) is in an arc shape.

6. A holding electromagnet according to claim 2, characterized in that: The guide shaft (5) is connected to the assembly sleeve (8); the baffle plate (16) has a size capable of completely covering the detection head on the photoelectric switch board (11); the guide shaft (5) and the assembly sleeve (8) are coaxially arranged; and the guide shaft (5) moves on the assembly sleeve (8).

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