Through type lead screw stepping motor

Abstract

The utility model discloses a through type lead screw stepping motor, which belongs to the technical field of stepping motors, and comprises a motor main body and a protective shell arranged outside the motor main body, the outer wall of one side of the protective shell is movably connected with a heat dissipation seat, and the inner wall of the heat dissipation seat is provided with a rotating motor. A driving gear is fixed to the outer wall of an output shaft of the rotating motor, a connecting pipe is rotationally connected into the heat dissipation base, a driving ring is fixed to the outer wall of the connecting pipe, a tooth groove meshed with the driving gear is formed in the outer wall of the driving ring, and a plurality of fan blades are fixed to the outer wall of the driving ring; and positioning sleeves are fixed to the outer walls of the two sides of the protective shell, and the outer wall of one side of each positioning sleeve is movably connected with a connecting block fixedly connected with the heat dissipation base. According to the through-type lead screw stepping motor, when the motor main body works, heat dissipation can be effectively carried out on the motor main body, the stability of the motor main body during working is guaranteed, and the heat dissipation base can be conveniently and rapidly disassembled and assembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of stepping motors, and particularly relates to a through-type lead screw stepping motor. Background Art

[0002] A stepping motor is an open-loop control motor that converts an electrical pulse signal into an angular displacement or a linear displacement, and is the main actuator in a modern digital program control system. Among them, the through-type lead screw stepping motor is applied in many fields such as medical treatment, beauty instruments, and automation equipment. The through-type lead screw stepping motor integrates a nut and a motor rotor, and the lead screw passes through the center of the motor rotor.

[0003] Most of the existing through-type lead screw stepping motors do not have an active heat dissipation function. When they work for a long time or the working environment temperature is relatively high, the high temperature will affect their normal operation, and the long-term high-temperature operation will shorten their service life, thus increasing the use cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a through-type lead screw stepping motor to solve the problem that most of the existing through-type lead screw stepping motors in the above background art do not have an active heat dissipation function, and when they work for a long time or the working environment temperature is relatively high, the high temperature will affect their normal operation.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A through-type lead screw stepping motor includes a motor main body and a protective shell installed outside the motor main body. One side outer wall of the protective shell is movably connected with a heat dissipation seat. A rotating motor is installed inside the heat dissipation seat. A driving gear is fixed on the outer wall of the output shaft of the rotating motor. A rotating hole is formed in the heat dissipation seat, and a connecting pipe is rotatably connected in the rotating hole of the heat dissipation seat. A driving ring is fixed on the outer wall of the connecting pipe. Tooth grooves meshing with the driving gear are formed on the outer wall of the driving ring, and a plurality of fan blades are fixed on the outer wall of the driving ring. Positioning sleeves are fixed on both outer walls of the protective shell. One side outer wall of the positioning sleeve is movably connected with a connecting block fixedly connected with the heat dissipation seat.

[0006] In a further embodiment, a moving hole is formed on the surface of the positioning sleeve, and a positioning pin is movably connected in the moving hole on the surface of the positioning sleeve.

[0007] In a further embodiment, a fixing ring is fixed on the outer wall of the positioning pin, and a fixing spring for supporting the fixing ring is sleeved outside the positioning pin.

[0008] In a further embodiment, a positioning block extending into the positioning sleeve is fixed on one side outer wall of the connecting block, and a positioning hole matching the positioning pin is formed on the surface of the positioning block.

[0009] In a further embodiment, heat dissipation grooves are provided on the outer walls around the protective shell, and dust-proof nets are installed in the heat dissipation grooves of the protective shell.

[0010] In a further embodiment, the motor main body includes a lead screw and a rotor disposed outside the lead screw. A stator is sleeved outside the rotor, and a first end cover and a second end cover are respectively installed on both sides of the stator.

[0011] In a further embodiment, a self-locking nut is fixed on the outer wall of one side of the first end cover, and limiting blocks for supporting the second end cover are fixed on the inner walls of the upper and lower sides of the protective shell.

[0012] Technical effects and advantages of the present utility model:

[0013] For this through-type lead screw stepper motor, when the motor main body works, the rotating motor drives the driving gear to rotate. The driving gear drives the connecting pipe to rotate through the driving ring, thereby driving a plurality of fan blades to rotate, blowing air towards the motor main body, accelerating the air flow speed around the motor main body, taking away the heat generated by the motor main body, actively cooling the motor main body, and avoiding the influence of high temperature on the normal operation of the motor main body.

[0014] By inserting the positioning block into the positioning sleeve, the fixing spring supports the fixing ring, and the positioning pin is inserted into the positioning hole of the positioning block, the installation of the heat dissipation seat can be quickly completed. At the same time, by pulling up the positioning pin to separate the positioning pin from the positioning block and moving the heat dissipation seat outwards, the disassembly of the heat dissipation seat can be quickly completed. The disassembly and assembly of the heat dissipation seat do not require external tools, and it is more flexible and convenient to use.

[0015] Through the cooperation of the protective shell and the heat dissipation seat, the motor main body can be effectively protected from being damaged by external forces, further extending the service life of this stepper motor. For this through-type lead screw stepper motor, when the motor main body works, it can effectively dissipate heat from it, ensure the stability during the operation of the motor main body, and is convenient for quickly disassembling and assembling the heat dissipation seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a structural schematic diagram of the present utility model;

[0018] Figure 2This is a schematic structural view of the motor main body of the present utility model in a sectional state;

[0019] Figure 3 This is a schematic structural view of the heat dissipation base of the present utility model;

[0020] Figure 4 For the present utility model Figure 3 An enlarged view of part A in;

[0021] Figure 5 This is a schematic structural view of the positioning sleeve of the present utility model in a sectional state.

[0022] In the figure: 1, lead screw; 2, rotor; 3, stator; 4, first end cover; 5, second end cover; 6, self-locking nut; 7, protective shell; 8, limiting block; 9, heat dissipation base; 10, rotating motor; 11, driving gear; 12, connecting pipe; 13, driving ring; 14, fan blade; 15, dust-proof net; 16, positioning sleeve; 17, positioning pin; 18, fixing ring; 19, fixing spring; 20, connecting block; 21, positioning block. Specific embodiments

[0023] In the following description, numerous specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0024] Unless otherwise defined, the directions such as up, down, left, right, front, back, inside and outside involved in this article are based on the up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are hereby explained together.

[0025] Please refer to Figures 1-5, the present utility model provides a through-type lead screw stepper motor, which includes a motor main body and a protective shell 7 installed outside the motor main body. The motor main body includes a lead screw 1 and a rotor 2 arranged outside the lead screw 1. A stator 3 is sleeved outside the rotor 2. An end cover one 4 and an end cover two 5 are respectively installed on both sides of the stator 3. A bearing is fixedly installed in the inner cavity of the stator 3, and a bearing is also embedded in the inner cavity of the end cover two 5. The lead screw 1 passes through the two bearings and is fixedly connected to the inner walls of the two bearings, enabling the lead screw 1 to run more smoothly. A wave washer is embedded on one side of the end cover one 4, and a self-tightening nut 6 is fixed on the outer wall of one side of the end cover one 4. The self-tightening nut 6 is sleeved outside the lead screw 1, and the lead screw 1 can move within the self-tightening nut 6. The wave washer can be compressed through the self-tightening nut 6, thereby removing the axial clearance generated by the rotor 2 during use, and eliminating the cumulative tolerance generated during the long-term use of this stepper motor. Limit blocks 8 for supporting the end cover two 5 are fixedly installed on the inner walls of the upper and lower sides of the protective shell 7 to ensure the stability of this stepper motor during operation. The working principle of the motor main body is prior art and will not be elaborated here;

[0026] A heat dissipation seat 9 is movably connected to the outer wall of one side of the protective shell 7. Through the cooperation of the protective shell 7 and the heat dissipation seat 9, the motor main body can be effectively protected from being damaged by external forces. A rotary motor 10 is installed on the inner wall of the heat dissipation seat 9 through bolts. A driving gear 11 is welded to the outer wall of the output shaft of the rotary motor 10. A rotating hole is opened on the heat dissipation seat 9, and a connecting pipe 12 is rotatably connected to the rotating hole of the heat dissipation seat 9 through a welded bearing. The inner diameter of the connecting pipe 12 is larger than the diameter of the lead screw 1 to facilitate the movement of the lead screw 1 within the connecting pipe 12. A driving ring 13 is welded to the outer wall of the connecting pipe 12. Tooth grooves meshing with the driving gear 11 are opened on the outer wall of the driving ring 13, and a plurality of fan blades 14 are installed on the outer wall of the driving ring 13 through bolts. A plurality of air inlet holes are opened on the outer wall of the heat dissipation seat 9, and heat dissipation grooves are opened on the outer walls of the four sides of the protective shell 7. A dust-proof net 15 is installed in the heat dissipation grooves of the protective shell 7. When the motor main body operates, the rotary motor 10 drives the driving gear 11 to rotate. The driving gear 11 drives the connecting pipe 12 to rotate through the driving ring 13, thereby driving a plurality of fan blades 14 to rotate, blowing air towards the motor main body, accelerating the air flow speed around the motor main body, taking away the heat generated by the motor main body, and actively cooling the motor main body to avoid high temperature affecting the normal operation of the motor main body;

[0027] Positioning sleeves 16 are welded to the outer walls on both sides of the protective shell 7. A connecting block 20 fixedly connected to the heat dissipation base 9 is movably connected to the outer wall on one side of the positioning sleeve 16. A moving hole is formed in the surface of the positioning sleeve 16, and a positioning pin 17 is movably connected in the moving hole on the surface of the positioning sleeve 16. A fixing ring 18 is welded to the outer wall of the positioning pin 17, and a fixing spring 19 for supporting the fixing ring 18 is sleeved outside the positioning pin 17. A positioning block 21 extending into the positioning sleeve 16 is fixed to the outer wall on one side of the connecting block 20. The positioning block 21 is movably connected to the positioning sleeve 16. A positioning hole matching the positioning pin 17 is formed in the surface of the positioning block 21. By inserting the positioning block 21 into the positioning sleeve 16 and the fixing spring 19 supporting the fixing ring 18, the positioning pin 17 is inserted into the positioning hole of the positioning block 21, the installation of the heat dissipation base 9 can be quickly completed. At the same time, by pulling up the positioning pin 17 to separate the positioning pin 17 from the positioning block 21 and moving the heat dissipation base 9 outwards, the disassembly of the heat dissipation base 9 can be quickly completed. The disassembly and assembly of the heat dissipation base 9 do not require the aid of external tools, and it is more flexible and convenient to use.

[0028] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here. The control mode of the present utility model is controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0029] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] Working principle:

[0031] When the through-type lead screw stepper motor is in use, the positioning block 21 is inserted into the positioning sleeve 16, the fixing spring 19 supports the fixing ring 18, so that the positioning pin 17 is inserted into the positioning hole of the positioning block 21, and the protective shell 7 is fixedly connected to the heat dissipation seat 9. When the motor body works, the rotating motor 10 is started to drive the driving gear 11 to rotate. The driving gear 11 drives the connecting pipe 12 to rotate through the driving ring 13, thereby driving a plurality of fan blades 14 to rotate and blow air to the motor body, accelerating the air flow speed around the motor body. Through the heat dissipation grooves on the outer walls of the four sides of the protective shell 7, the heat generated by the motor body is taken away, actively cooling the motor body and avoiding the influence of high temperature on the normal operation of the motor body;

[0032] When the heat dissipation seat 9 needs to be disassembled, the positioning pin 17 is pulled upward to separate the positioning pin 17 from the positioning block 21, and the heat dissipation seat 9 is moved outward, so that the disassembly of the heat dissipation seat 9 can be quickly completed. The disassembly and assembly of the heat dissipation seat 9 do not require external tools and are more flexible and convenient to use.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A through-type screw stepper motor, comprising a motor body and a protective shell (7) installed outside the motor body, characterized in that: A heat sink (9) is movably connected to an outer wall of one side of the protective shell (7), a rotating motor (10) is installed on the inner wall of the heat sink (9), a driving gear (11) is fixed to the outer wall of the output shaft of the rotating motor (10), a rotating hole is provided on the heat sink (9), and a connecting pipe (12) is rotatably connected in the rotating hole of the heat sink (9), a driving ring (13) is fixed to the outer wall of the connecting pipe (12), a tooth groove meshing with the driving gear (11) is provided on the outer wall of the driving ring (13), and a plurality of fan blades (14) are fixed to the outer wall of the driving ring (13), positioning sleeves (16) are fixed to the outer walls of both sides of the protective shell (7), and a connecting block (20) fixedly connected to the heat sink (9) is movably connected to the outer wall of one side of the positioning sleeve (16).

2. A through-type lead screw stepper motor according to claim 1, characterized in that: A movable hole is provided on the surface of the positioning sleeve (16), and a positioning pin (17) is movably connected in the movable hole on the surface of the positioning sleeve (16).

3. A through-type screw stepper motor according to claim 2, characterized in that: A fixing ring (18) is fixed to the outer wall of the positioning pin (17), and a fixing spring (19) for supporting the fixing ring (18) is sleeved on the outside of the positioning pin (17).

4. A through-type lead screw stepping motor according to claim 2, characterized in that: A positioning block (21) extending into the positioning sleeve (16) is fixed to an outer wall of one side of the connecting block (20), and a positioning hole matching the positioning pin (17) is provided on the surface of the positioning block (21).

5. The through-type lead screw stepping motor according to claim 1, characterized in that: The outer walls of the protective shell (7) are all provided with heat dissipation grooves, and a dustproof net (15) is installed in the heat dissipation grooves of the protective shell (7).

6. The through-type lead screw stepping motor according to claim 1, characterized in that: The motor body comprises a screw (1) and a rotor (2) arranged outside the screw (1); a stator (3) is sleeved outside the rotor (2); and end cover 1 (4) and end cover 2 (5) are respectively installed on both sides of the stator (3).

7. A through-type lead screw stepping motor according to claim 6, characterized in that: A self-tightening nut (6) is fixed to one side outer wall of the end cover 1 (4), and limit blocks (8) for supporting the end cover 2 (5) are fixed to both upper and lower inner walls of the protective shell (7).

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