CN216981707U

CN216981707U - Stepping motor push rod device

Info

Publication number: CN216981707U
Application number: CN202122646096.7U
Authority: CN
Inventors: 耿帅; 徐学利
Original assignee: Hebei Yian Aomei Medical Equipment Co ltd
Current assignee: Hebei Yian Aomei Medical Equipment Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-07-15
Anticipated expiration: 2031-11-01

Abstract

The utility model belongs to the technical field of equipment, and particularly relates to a stepping motor push rod device which comprises a retainer, a stepping motor, a linear guide rod assembly, a motor fixing block and a screw rod; the linear guide rod assembly comprises a plurality of linear guide rods, one ends of the linear guide rods are fixed on the retainer, and the linear guide rods penetrate through the motor fixing block through linear motion bearings; one end of the screw rod is fixed on the retainer, and the screw rod is arranged in the stepping motor in a penetrating way through a rotary straightening line structure in the stepping motor; the motor fixing block is provided with a screw rod through hole, and the screw rod penetrates through the screw rod through hole; the stepping motor is fixed on the motor fixing block and pushes the motor fixing block to perform linear motion along the linear guide rod and the screw rod. The utility model has small integral structure, convenient installation and expansion, convenient integrated design and can be used for miniature precision equipment.

Description

Stepping motor push rod device

Technical Field

The utility model belongs to the technical field of equipment, and particularly relates to a stepping motor push rod device.

Background

The electric push rod is an electric driving device which converts the rotary motion of a motor into the linear reciprocating motion of the push rod, can be used for various simple or complex process flows, and realizes remote control, centralized control or automatic control. The stepping motor push rod is an electric push rod using a stepping motor as power. The step motor is an open-loop control motor which converts electric pulse into angular displacement and can accurately control the output rotation angle or rotation speed, so that the push rod of the step motor can realize accurate control of the propelling distance and speed. At present, the transmission principle of a push rod of a stepping motor is mainly a screw rod and nut pair, wherein a screw rod is driven by a motor, and a nut moves linearly.

Chinese utility model patent CN203151305U discloses a stroke adjustable motor push rod device, including the casing, set up the motor of casing one end, with the pipe that the casing is connected sets up screw rod in the pipe, with screw rod threaded connection passes through the screw rod promotes and is provided with the push-and-pull institution of stopper, wherein, the both ends of pipe are provided with the fluting and be provided with position adjustable micro-gap switch on the fluting. However, the push rod device disclosed by the patent is complex in structure, poor in stability and not strong in practicability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stepping motor push rod device, which adopts a through stepping motor as a driving mechanism, is matched with a linear guide rod to enable the whole structure to be small and exquisite, is convenient to install, expand and integrate and can be used for miniature precision equipment.

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

a stepping motor push rod device comprises a retainer, a stepping motor, a linear guide rod assembly, a motor fixing block and a screw rod; the linear guide rod assembly comprises a plurality of linear guide rods, one ends of the linear guide rods are fixed on the retainer, and the linear guide rods penetrate through the motor fixing block through linear motion bearings; one end of the screw rod is fixed on the retainer, and the screw rod is arranged in the stepping motor in a penetrating way through a rotary straightening line structure in the stepping motor; the motor fixing block is provided with a screw rod through hole, and the screw rod penetrates through the screw rod through hole; the stepping motor is fixed on the motor fixing block and pushes the motor fixing block to perform linear motion along the linear guide rod and the screw rod.

Preferably, the linear guide rod group consists of two linear guide rods, and the two linear guide rods are arranged in parallel with the screw rod.

Preferably, the screw rod through hole is internally provided with threads. The threads may be used to mount other components.

Preferably, the stepping motor is a through stepping motor.

Preferably, a limit switch is arranged on one side of the motor corresponding to the retainer.

Preferably, the limit switch is a hall limit switch.

The utility model adopts screw-nut pair transmission and linear guide rod linear bearing, when the push rod of the stepping motor moves, the nut inside the through stepping motor rotates, and the screw rod moves linearly.

The linear guide rod of the utility model has the following functions: (1) limiting the rotation of the screw rod; (2) the lead screw can move stably, and the structural rigidity is improved.

Drawings

FIG. 1 is a front view of a stepper motor pusher apparatus;

FIG. 2 is an isometric view of a stepper motor push rod;

reference numerals:

1. a holder; 2. a guide rod A; 3. a stepping motor; 4. a motor fixing block; 5. a screw rod; 6. a magnet; 7. a Hall limit switch; 8. a linear motion bearing; 9. mounting screws; 10. and a guide rod B.

Detailed Description

The utility model is described in further detail below with reference to the figures and the detailed description.

Example 1

As shown in fig. 1-2, a stepping motor push rod device comprises a holder 1, a stepping motor 3, a linear guide rod assembly, a motor fixing block 4 and a screw rod 5; the linear guide rod assembly comprises two linear guide rods (a guide rod A2 and a guide rod B10), one end of each linear guide rod is fixed on the retainer 1, and the linear guide rods penetrate through the motor fixing block 4 through linear motion bearings 8; one end of the screw rod 5 is fixed on the retainer 1, and the screw rod 5 is arranged on the stepping motor 3 in a penetrating way through a rotary straightening line structure in the stepping motor 3; the motor fixing block 4 is provided with a screw rod through hole 11, and the screw rod 5 penetrates through the screw rod through hole 11; the stepping motor 3 is fixed on the motor fixing block 4 by adopting a mounting screw 9 and pushes the motor fixing block 4 to do linear motion along the linear guide rod and the screw rod.

Two linear guide rods of the linear guide rod group are arranged in parallel with the screw rod. And threads are arranged in the through hole of the screw rod. The threads may be used to mount other components. The stepping motor is a through stepping motor.

And a limit switch 7 is arranged on one side of the motor corresponding to the retainer. The limit switch 7 is a Hall limit switch, and correspondingly, a magnet 6 matched with the Hall limit switch is arranged on the retainer 1.

The total number of the linear guide rods is two, and when the push rod of the stepping motor moves, the screw rod and the guide rods move linearly together. Wherein, the guide rod and the screw rod can be used as a push rod.

The embodiment is manufactured based on a through type stepping motor, wherein the guide rod and the screw rod can be used as push rods, and the push rods can move simultaneously. The number of the guide rods in the push rod of the stepping motor can be changed into one, three or more than three so as to change the total number of the push rods which move simultaneously, and the stepping motor can be applied to more structures.

The utility model can install Hall element at the tail of the motor as a limit switch to play the role of limiting the motion stroke of the push rod.

Conventional technical knowledge in the art can be used for the details which are not described in the present invention.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A stepping motor push rod device is characterized by comprising a retainer, a stepping motor, a linear guide rod assembly, a motor fixing block and a screw rod;

the linear guide rod assembly comprises a plurality of linear guide rods, one ends of the linear guide rods are fixed on the retainer, and the linear guide rods penetrate through the motor fixing block through linear motion bearings;

one end of the screw rod is fixed on the retainer, and the screw rod is arranged in the stepping motor in a penetrating way through a rotary straightening line structure in the stepping motor;

the motor fixing block is provided with a screw rod through hole, and the screw rod penetrates through the screw rod through hole;

the stepping motor is fixed on the motor fixing block and pushes the motor fixing block to move linearly along the linear guide rod and the screw rod.

2. The stepping motor pusher apparatus according to claim 1, wherein the linear guide rod group is composed of two linear guide rods, and the two linear guide rods are arranged in parallel with the lead screw.

3. The stepping motor pushing rod device according to claim 1, wherein a screw thread is provided in the screw rod through hole.

4. The stepping motor pusher apparatus according to claim 1, wherein said stepping motor is a through-type stepping motor.

5. The stepping motor pusher apparatus according to any one of claims 1 to 4, wherein a limit switch is provided on the motor corresponding to one side of the holder.

6. The stepping motor pushing rod device according to claim 5, wherein the limit switch is a Hall limit switch.