CN216252505U

CN216252505U - Permanent magnet sucker

Info

Publication number: CN216252505U
Application number: CN202122155506.8U
Authority: CN
Inventors: 戴翔
Original assignee: Dazheng Industrial Robot Technology Corp
Current assignee: Dazheng Industrial Robot Technology Corp
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-04-08
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a permanent magnet sucker, which is characterized by comprising the following components: the magnet assembly comprises a magnet and/or a magnetic conduction piece made of magnetic conduction materials; a housing assembly including an upper housing and a lower housing; the magnet assembly is provided with a first position and a second position inside the shell assembly, when the magnet assembly is located at the first position, the magnet assembly is communicated with the upper shell, the upper shell is made of a magnetic conducting material, and a larger magnetic field is obtained at the upper shell and is located in a load state; when the magnet assembly is in the second position, the magnet assembly is far away from the upper shell and is not communicated with the upper shell, the magnet assembly is wrapped by the lower shell, the lower shell is made of a magnetic conductive material and forms a closed-loop magnetic field with the magnet assembly, and the magnetic field on the upper surface of the upper shell is weaker and is in an unloading state.

Description

Permanent magnet sucker

Technical Field

The utility model relates to the field of magnet switches, in particular to a permanent magnet sucker.

Background

The prior art permanent magnet chucks employ two magnets to increase or decrease the magnetic field by changing the direction of the magnetic poles.

For example, one of the "pneumatically or electrically actuated permanent magnet chuck devices" disclosed in the chinese patent literature, having publication number CN205016401U, includes a housing having an interior cavity open at opposite ends of the housing; a circular metal shim at or near one of the open ends of the internal cavity to close one side of the internal cavity; first and second permanent magnets which are cylindrical and bipolarly differentiated in diameter, are superposed on each other in the inner cavity and are separated by a circular plastic thin bushing; a mechanical linkage connected to one of the first and second permanent magnets; a cover plate closing the other open end of the inner cavity at the housing; and a pneumatic or electric actuator mechanically coupled to the mechanical coupling member to rotate the permanent magnets coupled to the mechanical coupling member between two rotational positions, in one of which the N and S poles of two diametrically polarized permanent magnets are parallel in the stacking direction of the first and second permanent magnets, and in the other rotational position the N and S poles of the first and second permanent magnets are anti-parallel.

The method has a complex structure, and simultaneously, the N, S poles of the two magnets are required to be in antiparallel to output a larger power, so that the energy consumption is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides a permanent magnet sucker, which aims to overcome the problems in the prior art. The magnetism of the working plane is controlled by moving the position of the magnet, the structure is simple, and energy is saved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a permanent magnet chuck, characterized in that the permanent magnet chuck comprises: the magnet assembly comprises a magnet and/or a magnetic conduction piece made of magnetic conduction materials; the magnet assembly comprises a magnet assembly, a shell assembly and a magnet, wherein the magnet assembly is arranged in the shell assembly, and the magnet assembly is arranged in the shell assembly; the magnet assembly is in there are first position and second position in the shell subassembly, the first position is the load state of permanent magnet sucking disc, the first position is the magnet assembly moves to the contact the position of epitheca, the second position is the uninstallation state of permanent magnet sucking disc, the second position is the magnet assembly moves to in the inferior valve inner chamber, and when the magnet assembly is in the second position, magnet with the epitheca contactless. The movement of the magnet assembly is realized by a mechanical structure, pneumatic or electric drive magnet assembly, the upper surface of the upper shell is a working plane, when the magnet assembly is at the first position, the magnet assembly is communicated with the upper shell, the upper shell is made of a magnetic conductive material, and a larger magnetic field is obtained at the upper shell and is in a load state; when the magnet assembly is in the second position, the magnet assembly is far away from the upper shell and is not communicated with the upper shell, the magnet assembly is wrapped by the lower shell, the lower shell is made of a magnetic conductive material and forms a closed-loop magnetic field with the magnet assembly, and the magnetic field on the upper surface of the upper shell is weaker and is in an unloading state.

Preferably, the magnet assembly comprises a movable top core, a first magnet, a second magnet and a cylinder sleeve, wherein the movable top core, the first magnet, the second magnet and the cylinder sleeve are arranged from left to right in the description sequence, and two adjacent components are fixedly connected.

Preferably, the housing assembly further comprises a middle spacer made of a non-magnetic material, the upper shell, the middle spacer and the lower shell are arranged from left to right in the described order, and the adjacent two components are fixedly connected to form a housing inner cavity, and the magnet assembly moves in the housing inner cavity along a direction parallel to the internal magnetic field of the magnet.

Preferably, the permanent magnet sucker further comprises a positioning assembly, the positioning assembly comprises a positioning sleeve and a positioning pin, the positioning sleeve is fixed on the upper shell or the lower shell, and the positioning pin is fixed on the magnet assembly. The positioning assembly has the function of ensuring that the magnet assembly does not deviate when moving in the inner cavity of the shell, and the phenomenon that the magnet assembly is blocked and cannot be demagnetized in the use process is solved.

Preferably, the upper shell is provided with a first air port, the lower shell is provided with a second air port, the first air port is connected with the inner cavity of the shell, the second air port is connected with the inner cavity of the shell, and the side face of the magnet assembly is tightly attached to the inner side wall of the shell assembly and is subjected to air tightness treatment. The first air port is used for air intake, the second air port is used for air exhaust, and the magnet assembly is pushed to the second position; the first air port exhausts air, the second air port admits air, and the magnet assembly is pushed to the first position.

Preferably, the permanent magnet chuck further comprises a magnetic sensor disposed at a position where the magnetic field strength near the upper shell can be detected. The magnetic sensor has the effects of solving the problem that the pneumatic magnet does not have working state feedback in the working process and effectively judging the current working state of the magnet.

Preferably, the first air port is connected with a first air pipe connector, and the second air port is connected with a second air pipe connector.

Preferably, the permanent magnet chuck further comprises a first magnetic conduction block and a second magnetic conduction block, the first magnetic conduction block and the second magnetic conduction block are both made of magnetic conduction materials, the first magnetic conduction block is fixed on the side face of the upper shell, and the second magnetic conduction block is fixed on the side face of the lower shell. The magnetic conduction block has the functions that: when the permanent magnet sucker works, the magnetic conduction block contacts the ferromagnetic workpiece, the magnetic conduction block is abraded after long-term use, the permanent magnet sucker and the magnetic conduction block are detachably and fixedly connected, and only the magnetic conduction block needs to be replaced when the magnetic conduction block is abraded without replacing the whole part.

Therefore, the utility model has the following beneficial effects: (1) the magnetism of the working plane is controlled by moving the position of the magnet, the structure is simple, and energy is saved; (2) the positioning component ensures that the magnet component does not deviate when moving in the inner cavity of the shell, and solves the problems of blocking and incapability of demagnetizing in the use process; (3) the magnetic sensor solves the problem that the pneumatic magnet does not have working state feedback in the working process, and can effectively judge the current working state of the magnet.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of a structure of the present invention in a loaded state.

Fig. 3 is a schematic view of the present invention in an unloaded state.

In the figure, an upper shell 1, a middle partition plate 2, a lower shell 3, a magnetic sensor 4, a first air pipe joint 5, a second air pipe joint 6, a first magnetic conduction block 7, a second magnetic conduction block 8, a positioning sleeve 9, a positioning pin 10, a movable top core 11, a first magnet 12, a second magnet 13, a cylinder sleeve 14, a combined sealing ring 15 and an O-shaped sealing ring 16.

Detailed Description

The utility model is further described with reference to the following detailed description and accompanying drawings.

In the embodiment shown in fig. 1, 2 and 3, a permanent magnet suction cup is characterized by comprising: a magnet assembly comprising a magnet and/or a magnetically permeable material; the magnet assembly comprises a shell assembly, the shell assembly comprises an upper shell 1 and a lower shell 3, the upper shell 1 and the lower shell 3 are both made of magnetic conductive materials, the upper shell 1 and the lower shell 3 are not in contact with each other, the lower shell 3 is provided with a lower shell inner cavity, the magnet assembly moves in the shell assembly along the direction parallel to the internal magnetic field of the magnet, and the depth of the lower shell inner cavity is greater than one half of the length of the magnet assembly along the direction of the internal magnetic field; the magnet assembly is in there are first position and second position in shell subassembly inside, the first position is the load state of permanent magnet sucking disc (fig. 2), the first position is the position that the magnet assembly moved to contact the epitheca, the second position is the uninstallation state of permanent magnet sucking disc (fig. 3), the second position is the magnet assembly moves to inferior valve intracavity, and when the magnet assembly is in the second position, the magnet with the epitheca contactless. The magnet assembly comprises a movable top core 11, a first magnet 12, a second magnet 13 and a cylinder sleeve 14, wherein the movable top core 11, the first magnet 12, the second magnet 13 and the cylinder sleeve 14 are arranged in the described sequence and are fixedly connected between two adjacent components. The shell component also comprises a middle clapboard 2, the middle clapboard 2 is made of non-magnetic materials, the upper shell 1, the middle clapboard 2 and the lower shell 3 are arranged in the described sequence, and are fixedly connected with each other to form a shell inner cavity, and the magnet component moves in the shell inner cavity along the direction parallel to the internal magnetic field of the magnet. The permanent magnet sucker further comprises a positioning assembly, the positioning assembly comprises a positioning sleeve 9 and a positioning pin 10, the positioning sleeve 9 is fixed on the upper shell 1 or the lower shell 3, and the positioning pin 10 is fixed on the magnet assembly. The positioning assembly has the function of ensuring that the magnet assembly does not deviate when moving in the inner cavity of the shell, and the phenomenon that the magnet assembly is blocked and cannot be demagnetized in the use process is solved. The upper casing 1 is provided with a first air port, the lower casing 3 is provided with a second air port, the first air port is connected with the inner cavity of the casing, the inner cavity of the casing is connected with the second air port, and the side surface of the magnet assembly is tightly attached to the inner side wall of the casing assembly and is subjected to air tightness treatment. The first air port is used for air intake, the second air port is used for air exhaust, and the magnet assembly is pushed to the second position; the first air port exhausts air, the second air port admits air, and the magnet assembly is pushed to the first position. The permanent magnet chuck further comprises a magnetic sensor 4, the magnetic sensor 4 being arranged at a position where the magnetic field strength near the upper shell can be detected. The magnetic sensor has the effects of solving the problem that the pneumatic magnet does not have working state feedback in the working process and effectively judging the current working state of the magnet. The first air port is connected with a first air pipe connector 5, and the second air port is connected with a second air pipe connector 6. The permanent magnet sucker further comprises a first magnetic conduction block 7 and a second magnetic conduction block 8, the first magnetic conduction block 7 and the second magnetic conduction block 8 are made of magnetic conduction materials, the first magnetic conduction block 7 is fixed on the side face of the upper shell, and the second magnetic conduction block 8 is fixed on the side face of the lower shell.

The movement of the magnet assembly is realized by a mechanical structure, pneumatic or electric drive magnet assembly, the upper surface of the upper shell is a working plane, when the magnet assembly is at the first position, the magnet assembly is communicated with the upper shell, the upper shell is made of a magnetic conductive material, and a larger magnetic field is obtained at the upper shell and is in a load state; when the magnet assembly is in the second position, the magnet assembly is far away from the upper shell and is not communicated with the upper shell, the magnet assembly is wrapped by the lower shell, the lower shell is made of a magnetic conductive material and forms a closed-loop magnetic field with the magnet assembly, and the magnetic field on the upper surface of the upper shell is weaker and is in an unloading state.

1. When the permanent magnet sucker is in a load state, magnetic lines of force come out from the N pole of the magnet, pass through the upper shell and the first magnetic conduction block, then sequentially pass through the second magnetic conduction block and the lower shell and then enter the S pole of the magnet. Therefore, the workpiece can be firmly attracted to the working pole surface of the permanent magnet sucker.

2. The air source enters the air cavity through the first air pipe joint, and the magnet assembly moves to the right side; entering an unloading state;

3. when the permanent magnet sucker is in an unloading state, magnetic lines of force basically do not pass through the working pole face of the permanent magnet sucker, only a closed loop of a magnetic circuit is formed in the permanent magnet sucker, and almost no magnetic lines of force come out of the working plane of the permanent magnet sucker, so that the magnetic sucker does not generate suction force on ferromagnetic workpieces, and unloading is smoothly realized.

Claims

1. A permanent magnet chuck, characterized in that the permanent magnet chuck comprises: the magnet assembly comprises a magnet and/or a magnetic conduction piece made of magnetic conduction materials; the magnet assembly comprises a magnet assembly, a shell assembly and a magnet, wherein the magnet assembly comprises an upper shell and a lower shell, the upper shell and the lower shell are both made of magnetic conductive materials, the upper shell and the lower shell are not contacted with each other, the lower shell is provided with a lower shell inner cavity, and the depth of the lower shell inner cavity is larger than one half of the length of the magnet assembly along the direction of an internal magnetic field; the magnet assembly is in there are first position and second position in the shell subassembly, the first position is the load state of permanent magnet sucking disc, the first position is the magnet assembly moves to the contact the position of epitheca, the second position is the uninstallation state of permanent magnet sucking disc, the second position is the magnet assembly moves to in the inferior valve inner chamber, and when the magnet assembly is in the second position, magnet with the epitheca contactless.

2. The permanent magnet suction cup according to claim 1, wherein the magnet assembly comprises a movable top core, a first magnet, a second magnet and a cylinder sleeve, the movable top core, the first magnet, the second magnet and the cylinder sleeve are arranged from left to right in the described order and are fixedly connected between the two adjacent components.

3. The permanent magnet suction cup according to claim 1 wherein said housing assembly further comprises a middle spacer made of a non-magnetic material, said upper, middle and lower shells being arranged in the described order from left to right and being fixedly connected between adjacent two components to form a housing interior.

4. The permanent magnet chuck of claim 1, further comprising a positioning assembly, wherein the positioning assembly comprises a positioning sleeve and a positioning pin, the positioning sleeve is fixed on the upper shell or the lower shell, and the positioning pin is fixed on the magnet assembly.

5. The permanent magnet chuck according to claim 2 or 3, further comprising a positioning assembly, wherein the positioning assembly comprises a positioning sleeve and a positioning pin, the positioning sleeve is fixed on the upper shell or the lower shell, and the positioning pin is fixed on the magnet assembly.

6. The permanent magnet sucker according to claim 3, wherein the upper shell is provided with a first air port, the lower shell is provided with a second air port, the first air port is connected with the inner cavity of the shell, the second air port is connected with the inner cavity of the shell, and the side surface of the magnet assembly is tightly attached to the inner side wall of the shell assembly and is subjected to air tightness treatment.

7. A permanent magnet chuck according to claim 1, 2, 3 or 4, further comprising a magnetic sensor positioned to sense the strength of the magnetic field in the vicinity of the upper shell.

8. A permanent magnet suction cup according to claim 6, wherein the first air port is connected to a first air pipe connection and the second air port is connected to a second air pipe connection.

9. The permanent magnet chuck of claim 6, further comprising a first magnetic conductive block and a second magnetic conductive block, wherein the first magnetic conductive block and the second magnetic conductive block are made of magnetic conductive material, the first magnetic conductive block is fixed on the side surface of the upper shell, and the second magnetic conductive block is fixed on the side surface of the lower shell.

10. The permanent magnet chuck of claim 7, further comprising a first magnetic conductive block and a second magnetic conductive block, wherein the first magnetic conductive block and the second magnetic conductive block are made of magnetic conductive material, the first magnetic conductive block is fixed on the side surface of the upper shell, and the second magnetic conductive block is fixed on the side surface of the lower shell.