Sandwich type motor with iron core

Abstract

The utility model relates to the technical field of linear motors, in particular to a sandwich type motor with iron cores, which comprises a motor seat, a plurality of permanent magnets arranged in the middle of the bottom of the motor seat, iron cores arranged on two sides of the bottom of the motor seat, a plurality of coils arranged on the inner sides of the iron cores, two rows of symmetrically arranged permanent magnets and a movable plate arranged in the middle. The permanent magnets on the two sides of the movable plate attract each other, the coils and the iron cores are of symmetrical structures, and the permanent magnets, the coils and the iron cores form a three-layer sandwich type structure. In the sandwich type iron core motor, the permanent magnets are arranged in the middle, the polarity of the permanent magnets is utilized to form an effect of mutual attraction on two sides, the adsorption force of the permanent magnets on two sides is enhanced, and an external magnetic field is increased, so that the thrust of the motor is increased, the coil and the iron core are completely symmetrical, and the attraction force with the permanent magnets is balanced, and the whole motor is not stressed outwards; and the motor base is made of 304 stainless steel, so that disturbance to a magnetic field of the motor is prevented, and the overall rigidity of the motor is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of linear motors, in particular to a sandwich-type iron-core motor. Background Art

[0002] As a new type of motor, iron-core linear motors have been widely used in many fields due to their high efficiency, energy-saving, and environmentally friendly features. However, with increasing demands on speed and size for domestic equipment, conventional iron-core linear motors are no longer able to meet the needs of SMT customers.

[0003] The existing iron core linear motor has a cogging force and mechanical rigidity that easily leads to a decrease in driving force, resulting in insufficient motor thrust. In addition, the motor housing and base easily disturb the motor magnetic field, making the overall rigidity of the motor insufficient. Utility Model Content

[0004] The purpose of the present utility model is to provide a sandwich-type iron core motor to solve the problem proposed in the above background technology that the tooth slot force and mechanical rigidity of the existing iron core linear motor easily lead to a decrease in driving force, resulting in insufficient motor thrust, and the motor casing and base easily disturb the motor magnetic field, resulting in insufficient overall rigidity of the motor.

[0005] To achieve the above-mentioned purpose, the utility model provides a sandwich-type iron-core motor, comprising a motor base, wherein a plurality of permanent magnets are installed in the middle of the bottom of the motor base, iron cores are provided on both sides of the bottom of the motor base, and a plurality of coils are installed on the inner side of the iron cores. The permanent magnets are symmetrically arranged in two rows, with a movable plate provided in the middle. The permanent magnets on both sides of the movable plate attract each other, the coils and the iron core are both symmetrical structures, and the permanent magnets, coils and the iron core form a three-layer sandwich structure.

[0006] Preferably, the motor base is made of 304 stainless steel.

[0007] Preferably, a coil limiting protrusion is provided on a side of the iron core close to the coil, and the middle through hole of the coil is snap-fitted with the coil limiting protrusion.

[0008] Preferably, gaps are provided between adjacent coils, and the coils are arranged at equal intervals.

[0009] Preferably, mounting holes are provided on both sides of the top of the motor base, and the iron core is connected and fixed through bolts in the mounting holes.

[0010] Preferably, a groove is provided at the bottom of the motor base near the coil, and the top of the coil is stuck in the groove.

[0011] Preferably, a plurality of bolt holes are provided on the top of the movable plate, and the movable plate is mounted on the movable part by bolts.

[0012] Preferably, the permanent magnets are arranged at equal intervals on the outer wall of the movable plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this sandwich-type iron-core motor, the permanent magnet is placed in the middle of the structure, and the polarity of the permanent magnet is used to form an effect of mutual attraction between the two sides, thereby strengthening the adsorption force of the permanent magnets on both sides, increasing the external magnetic field, and thus increasing the thrust of the motor. The coil and the iron core are completely symmetrical, balancing the attraction between the permanent magnets, so that the motor as a whole is not subjected to external force, effectively reducing the cogging force and mechanical rigidity requirements. The motor base is made of 304 stainless steel to prevent disturbance of the motor magnetic field and enhance the overall rigidity of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the motor base in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the iron core in this utility model.

[0019] The meaning of each number in the figure is:

[0020] 1. Motor base; 11. Mounting hole; 12. Groove; 2. Iron core; 21. Coil limiting bump; 3. Coil; 4. Movable plate; 5. Permanent magnet. Implementation Method

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides a sandwich type iron core motor, such as Figure 1-Figure 4As shown, it includes a motor base 1, a plurality of permanent magnets 5 are installed in the middle of the bottom of the motor base 1, iron cores 2 are provided on both sides of the bottom of the motor base 1, a plurality of coils 3 are installed on the inner side of the iron core 2, the permanent magnets 5 are symmetrically arranged in two rows, a movable plate 4 is provided in the middle, the permanent magnets 5 on both sides of the movable plate 4 attract each other, the coils 3 and the iron core 2 are symmetrical structures, the permanent magnets 5, the coils 3 and the iron core 2 form a three-layer sandwich structure, the structure with the permanent magnet 5 in the middle utilizes the polarity of the permanent magnet 5 to form an effect of mutual attraction on both sides, strengthens the adsorption force of the permanent magnets 5 on both sides, increases the external magnetic field, and thus increases the thrust of the motor.

[0023] In this embodiment, the motor base 1 is made of 304 stainless steel.

[0024] Specifically, a coil limiting protrusion 21 is provided on one side of the iron core 2 close to the coil 3 , and the middle through hole of the coil 3 is snap-fitted with the coil limiting protrusion 21 .

[0025] Furthermore, gaps are provided between adjacent coils 3 , and the coils 3 are arranged at equal intervals to prevent mutual wear between the coils 3 .

[0026] Furthermore, mounting holes 11 are provided on both sides of the top of the motor base 1 , and the mounting holes 11 are used to connect and fix the iron core 2 through bolts, so as to facilitate the installation and fixation of the iron core 2 .

[0027] Furthermore, a groove 12 is provided at the bottom of the motor base 1 near the coil 3 , and the top of the coil 3 is stuck in the groove 12 to facilitate the positioning of the coil 3 .

[0028] Furthermore, a plurality of bolt holes are provided on the top of the movable plate 4, and the movable plate 4 is mounted on the movable part by bolts.

[0029] Furthermore, the permanent magnets 5 are arranged at equal intervals on the outer wall of the movable plate 4 , so that the suction force of the permanent magnets 5 is uniform.

[0030] When the sandwich-type iron-core motor of the present invention is in use, first, power is connected to the motor, and current passes through the coil 3 to generate a magnetic field; the fixed magnetic field generated by the permanent magnet 5 interacts with the magnetic field generated by the coil 3; the iron core 2 generates a magnetic force under the action of the magnetic field, pushing the movable plate 4 to move; by adjusting the current size and direction of the coil 3, the magnetic field strength and direction can be changed, thereby changing the thrust and movement direction of the motor; the symmetrical structure of the iron core 2 and the coil 3 ensures the stability and balance of the motor, avoiding the generation of vibration and noise.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A sandwich iron core motor, comprising a motor base (1), characterized in that: A plurality of permanent magnets (5) are installed in the middle of the bottom of the motor base (1), an iron core (2) is arranged on both sides of the bottom of the motor base (1), a plurality of coils (3) are installed inside the iron core (2), the permanent magnets (5) are arranged in two symmetrical rows, a movable plate (4) is arranged in the middle, the permanent magnets (5) on both sides of the movable plate (4) attract each other, the coils (3) and the iron core (2) are symmetrical structures, and the permanent magnets (5), the coils (3) and the iron core (2) form a three-layer sandwich structure.

2. The sandwich iron core motor according to claim 1, characterized in that: The motor base (1) is made of 304 stainless steel.

3. The sandwich iron core motor according to claim 1, characterized in that: A coil limiting protrusion (21) is provided on one side of the iron core (2) close to the coil (3), and a central through hole of the coil (3) is snap-fitted with the coil limiting protrusion (21).

4. The sandwich iron core motor according to claim 1, characterized in that: Gaps are provided between adjacent coils (3), and the coils (3) are arranged at equal intervals.

5. The sandwich iron core motor according to claim 1, characterized in that: Mounting holes (11) are provided on both sides of the top of the motor seat (1), and the mounting holes (11) are connected and fixed to the iron core (2) by bolts.

6. The sandwich iron core motor according to claim 1, characterized in that: A groove (12) is provided at the bottom of the motor base (1) near the coil (3), and the top of the coil (3) is stuck in the groove (12).

7. The sandwich iron core motor according to claim 1, characterized in that: A plurality of bolt holes are provided on the top of the movable plate (4), and the movable plate (4) is mounted on the movable part by means of bolts.

8. The sandwich iron core motor according to claim 1, characterized in that: The permanent magnets (5) are arranged at equal intervals on the outer wall of the movable plate (4).

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