CN220964528U - High-wear-resistance screw motor - Google Patents

Abstract

The utility model provides a high-wear-resistance screw motor, wherein in the working process of the high-wear-resistance screw motor, a stepping motor drives a driving screw to rotate, and a screw rod principle is utilized to drive a screw rod to rotate so as to drive a U-shaped sliding plate and four sliding blocks to move along two sliding tracks. Each side of the U-shaped sliding plate correspondingly moves through a sliding gap. The EPX screw nut has high structural strength, good compression resistance and good wear resistance, and the EPX screw nut has self-lubricating property and can reduce friction force with a driving screw. The sliding block is provided with the solid lubricating grease on the inner wall of the sliding groove, so that the friction force between the sliding block and the sliding track is greatly reduced, and the mutual abrasion degree of the sliding block and the sliding track is reduced. The resistance in the running process of the high-wear-resistance screw motor is reduced, so that the energy consumption of the high-wear-resistance screw motor is reduced, and the service life of the high-wear-resistance screw motor is prolonged.

Description

High-wear-resistance screw motor

Technical Field

The utility model relates to the field of screw motors, in particular to a screw motor with high wear resistance.

Background

The screw motor or linear motor is characterized in that a magnetic rotor core generates rotation through interaction with a pulse electromagnetic field generated by a stator, and the screw motor converts rotary motion into linear motion in the motor. Principle of screw motor: a screw is engaged with the nut, and some method is adopted to prevent the screw nut from rotating relatively, so that the screw moves axially. Generally, there are two ways to achieve this conversion, the first is to build in a rotor with internal threads in the motor, and the linear motion is achieved by engaging the internal threads of the rotor with the screw, and the second is to use the screw as the motor output shaft, and the linear motion is achieved by engaging the screw with an external drive nut outside the motor. The result of this is a greatly simplified design, enabling in many applications a precise linear movement directly using the lead screw motor without the installation of an external mechanical linkage.

However, the conventional screw motor, such as the one disclosed in the patent with application number CN202021474607.0, entitled linear screw stepping motor, has poor wear resistance and short service life.

Disclosure of utility model

Based on the above, it is necessary to provide a screw motor with high wear resistance against the technical problems of poor wear resistance and short service life of the traditional screw motor.

A high wear lead screw motor, the high wear lead screw motor comprising: the device comprises a bearing frame, a dust guard, a stepping motor, a driving screw rod and a moving mechanism;

the dustproof plate cover is arranged at the opening end of the bearing frame, each end of the dustproof plate is correspondingly detachably connected with one end of the bearing frame, and sliding gaps are formed between two sides of the dustproof plate and the bearing frame;

The stepping motor is connected with the outer wall of one end of the bearing frame; the driving shaft of the stepping motor is connected with one end of the driving screw rod, the driving screw rod is accommodated in the bearing frame, and one end of the driving screw rod, which is far away from the stepping motor, is rotationally connected with the inner wall of one end of the bearing frame, which is far away from the stepping motor;

The moving mechanism comprises a screw rod nut, a U-shaped sliding plate, two sliding rails and four sliding blocks; the screw rod nut is matched with the driving screw rod, and is sleeved on the driving screw rod and in threaded connection with the driving screw rod; one end of the U-shaped sliding plate is connected with the screw nut; each side of the U-shaped sliding plate correspondingly passes through one sliding gap; the two sliding rails are arranged at the bottom of the bearing frame in parallel; the four sliding blocks are arranged on the outer wall of the sealing end of the U-shaped sliding plate, sliding grooves are formed in the sliding blocks, the sliding grooves are matched with the sliding tracks, and each sliding track is correspondingly inserted into the two sliding grooves and is correspondingly connected with the two sliding blocks in a sliding manner; the sliding block is provided with solid lubricating grease on the inner wall of the sliding groove.

In one embodiment, the high-wear-resistance screw motor further comprises a position detection mechanism, wherein the position detection mechanism comprises a detection probe, a control mechanism and two position sensors; the detection probe sheet is connected with one side of the U-shaped sliding plate exposed out of the bearing frame, the two position sensors are respectively arranged at two ends of the bearing frame, the two position sensors are matched with the detection probe sheet, and the two position sensors can monitor the position of the detection probe sheet; the stepping motor and the two position sensors are electrically connected with the control mechanism.

In one embodiment, the moving mechanism further comprises a protective shell, the protective shell is accommodated in the receiving frame and connected with the bottom of the receiving frame, and the connection part of the driving shaft of the stepping motor and the driving screw rod is located in the protective shell.

In one embodiment, the U-shaped sliding plate is provided with a clamping opening, the clamping opening is matched with the protective shell, and the protective shell can be inserted into the clamping opening.

In one embodiment, the U-shaped sliding plate is provided with a buffer column in the clamping opening, and the buffer column can be abutted to the protective shell.

In one embodiment, the bumper post is a soft rubber post.

In one embodiment, the buffer column is a soft silica gel column.

In one embodiment, the buffer column is a youli rubber column.

In one embodiment, the sliding groove is a convex groove.

In one embodiment, the lead screw nut is an EPX lead screw nut.

In the working process of the high-wear-resistance screw motor, the stepping motor drives the driving screw to rotate, and the screw nut is driven to drive the U-shaped sliding plate and the four sliding blocks to move along the two sliding tracks by utilizing the screw principle. Each side of the U-shaped sliding plate correspondingly moves through a sliding gap. The EPX screw nut has high structural strength, good compression resistance and good wear resistance, and the EPX screw nut has self-lubricating property, so that the friction force between the EPX screw nut and a driving screw rod can be reduced, the resistance in the running process of the high-wear-resistance screw motor is reduced, the energy consumption of the high-wear-resistance screw motor is reduced, and the service life of the high-wear-resistance screw motor is prolonged. The sliding block is provided with the solid lubricating grease on the inner wall of the sliding groove, so that the friction force between the sliding block and the sliding track is greatly reduced, and the mutual abrasion degree of the sliding block and the sliding track is reduced. The resistance in the running process of the high-wear-resistance screw motor is reduced, so that the energy consumption of the high-wear-resistance screw motor is reduced, and the service life of the high-wear-resistance screw motor is prolonged.

Drawings

FIG. 1 is a schematic diagram of a high wear lead screw motor in one embodiment;

FIG. 2 is a schematic view of a portion of a high wear lead screw motor according to one embodiment;

FIG. 3 is a schematic view of a portion of a high wear lead screw motor according to one embodiment;

Fig. 4 is a schematic view of a part of the structure of a high wear-resistance screw motor in one embodiment.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 4, the present utility model provides a high wear-resistance screw motor 10, wherein the high wear-resistance screw motor 10 includes: the device comprises a receiving frame 100, a dust guard 200, a stepping motor 300, a driving screw 400 and a moving mechanism 500.

The dust guard 200 is covered on the opening end of the receiving frame 100, each end of the dust guard 200 is detachably connected with one end of the receiving frame 100, and sliding gaps 101 are formed between two sides of the dust guard 200 and the receiving frame 100.

The stepper motor 300 is connected to an outer wall of one end of the receiving frame 100. The driving shaft of the stepper motor 300 is connected with one end of a driving screw rod 400, the driving screw rod 400 is accommodated in the bearing frame 100, and one end of the driving screw rod 400 away from the stepper motor 300 is rotatably connected with the inner wall of one end of the bearing frame 100 away from the stepper motor 300.

The moving mechanism 500 includes a lead screw nut 510, a U-shaped sliding plate 520, two sliding rails 530, and four sliding blocks 540. The screw nut 510 is matched with the driving screw 400, and the screw nut 510 is sleeved on the driving screw 400 and is in threaded connection with the driving screw 400. One end of the U-shaped sliding plate 520 is connected to the lead screw nut 510. In this embodiment, the lead screw nut 510 is an EPX lead screw nut. The EPX screw nut has high structural strength, good compression resistance and good wear resistance, and the EPX screw nut has self-lubricating property, so that the friction force between the EPX screw nut and the driving screw 400 can be reduced, the resistance in the running process of the high-wear-resistance screw motor 10 is reduced, the energy consumption of the high-wear-resistance screw motor 10 is reduced, and the service life of the high-wear-resistance screw motor 10 is prolonged. Each side of the U-shaped sliding plate 520 correspondingly passes through a sliding gap 101. The two sliding rails 530 are disposed parallel to each other at the bottom of the receiving frame 100. The four sliding blocks 540 are all arranged on the outer wall of the sealing end of the U-shaped sliding plate 520, the sliding blocks 540 are provided with sliding grooves 501, the sliding grooves 501 are matched with the sliding rails 530, and each sliding rail 530 is correspondingly inserted into two sliding grooves 501 and correspondingly connected with two sliding blocks 540 in a sliding way. In the present embodiment, the sliding groove 501 is a convex groove. The sliding block 540 is provided with solid grease on the inner wall of the sliding groove 501. The solid grease of the sliding block 540 on the inner wall of the sliding groove 501 greatly reduces the friction between the sliding block 540 and the sliding rail 530, and reduces the mutual abrasion degree of the sliding block 540 and the sliding rail 530. The resistance in the running process of the high-wear-resistance screw motor 10 is reduced, so that the energy consumption of the high-wear-resistance screw motor 10 is reduced, and the service life of the high-wear-resistance screw motor 10 is prolonged.

In order to avoid the operation of the U-shaped sliding plate 520 beyond a preset stroke, in one embodiment, the high wear lead screw motor 10 further includes a position detection mechanism 600, the position detection mechanism 600 including a detection probe 610, a control mechanism (not shown), and two position sensors 620. The detection probe 610 is connected to one side of the U-shaped sliding plate 520 exposed out of the receiving frame 100, two position sensors 620 are respectively disposed at two ends of the receiving frame 100, the two position sensors 620 are adapted to the detection probe 610, and the two position sensors 620 can monitor the position of the detection probe 610. The stepper motor 300 and both position sensors 620 are electrically connected to the control mechanism. In the present embodiment, the control mechanism is a lower computer. Specifically, the control mechanism is a PLC, and in other embodiments, the control mechanism is a single chip microcomputer. In other embodiments, the control mechanism includes an upper computer and a lower computer, and the upper computer is electrically connected to the lower computer. The two position sensors 620 monitor the position of the U-shaped sliding plate 520 by monitoring the position of the detection probe 610, and transmit the position information of the U-shaped sliding plate 520 to the control mechanism, which controls the operation of the stepping motor 300 according to the position of the U-shaped sliding plate 520. In this way, the U-shaped sliding plate 520 is prevented from working beyond the preset stroke, and the working stability of the high-wear-resistance screw motor 10 is increased.

In order to increase the working stability of the high-wear-resistance screw motor 10, in one embodiment, the moving mechanism 500 further includes a protective housing 550, wherein the protective housing 550 is accommodated in the receiving frame 100 and is connected to the bottom of the receiving frame 100, and a connection portion between the driving shaft of the stepper motor 300 and the driving screw 400 is located in the protective housing 550. The protective case 550 can effectively protect the junction of the driving shaft of the stepping motor 300 and the driving screw 400, increasing the working stability of the high abrasion resistance screw motor 10. Further, in the present embodiment, the U-shaped sliding plate 520 is provided with a clamping opening 502, the clamping opening 502 is adapted to the protective housing 550, and the protective housing 550 can be inserted into the clamping opening 502 to increase the travel range of the U-shaped sliding plate 520. Further, in one embodiment, the U-shaped sliding plate 520 is provided with a buffer post 521 in the clamping opening 502, and the buffer post 521 can be abutted against the protective housing 550. In the present embodiment, the buffer column 521 is a soft rubber column, which has a certain elasticity, good toughness and excellent structural strength. In another embodiment, the buffer column 521 is a soft silica gel column. In yet another embodiment, the buffer column 521 is a youli glue column. The buffer post 521 prevents the rigid contact between the U-shaped sliding plate 520 and the protective case 550 directly and prevents the mutual abrasion between the U-shaped sliding plate 520 and the protective case 550. In this way, the operational stability of the high wear-resistance lead screw motor 10 is increased.

In the working process of the above-mentioned high wear-resistance screw motor 10, the stepper motor 300 drives the driving screw 400 to rotate, and by using the screw principle, the driving screw 400 rotates to drive the screw 400 nut to drive the U-shaped sliding plate 520 and the four sliding blocks 540 to move along the two sliding rails 530. Each side of the U-shaped sliding plate 520 moves through a sliding gap 101. The EPX screw nut has high structural strength, good compression resistance and good wear resistance, and the EPX screw nut has self-lubricating property, so that the friction force between the EPX screw nut and the driving screw 400 can be reduced, the resistance in the running process of the high-wear-resistance screw motor 10 is reduced, the energy consumption of the high-wear-resistance screw motor 10 is reduced, and the service life of the high-wear-resistance screw motor 10 is prolonged. The solid grease of the sliding block 540 on the inner wall of the sliding groove 501 greatly reduces the friction between the sliding block 540 and the sliding rail 530, and reduces the mutual abrasion degree of the sliding block 540 and the sliding rail 530. The resistance in the running process of the high-wear-resistance screw motor 10 is reduced, so that the energy consumption of the high-wear-resistance screw motor 10 is reduced, and the service life of the high-wear-resistance screw motor 10 is prolonged.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A high wear resistant lead screw motor comprising: the device comprises a bearing frame, a dust guard, a stepping motor, a driving screw rod and a moving mechanism;

the dustproof plate cover is arranged at the opening end of the bearing frame, each end of the dustproof plate is correspondingly detachably connected with one end of the bearing frame, and sliding gaps are formed between two sides of the dustproof plate and the bearing frame;

The stepping motor is connected with the outer wall of one end of the bearing frame; the driving shaft of the stepping motor is connected with one end of the driving screw rod, the driving screw rod is accommodated in the bearing frame, and one end of the driving screw rod, which is far away from the stepping motor, is rotationally connected with the inner wall of one end of the bearing frame, which is far away from the stepping motor;

The moving mechanism comprises a screw rod nut, a U-shaped sliding plate, two sliding rails and four sliding blocks; the screw rod nut is matched with the driving screw rod, and is sleeved on the driving screw rod and in threaded connection with the driving screw rod; one end of the U-shaped sliding plate is connected with the screw nut; each side of the U-shaped sliding plate correspondingly passes through one sliding gap; the two sliding rails are arranged at the bottom of the bearing frame in parallel; the four sliding blocks are arranged on the outer wall of the sealing end of the U-shaped sliding plate, sliding grooves are formed in the sliding blocks, the sliding grooves are matched with the sliding tracks, and each sliding track is correspondingly inserted into the two sliding grooves and is correspondingly connected with the two sliding blocks in a sliding manner; the sliding block is provided with solid lubricating grease on the inner wall of the sliding groove.

2. The high wear lead screw motor of claim 1, further comprising a position detection mechanism comprising a detection probe, a control mechanism, and two position sensors; the detection probe sheet is connected with one side of the U-shaped sliding plate exposed out of the bearing frame, the two position sensors are respectively arranged at two ends of the bearing frame, the two position sensors are matched with the detection probe sheet, and the two position sensors can monitor the position of the detection probe sheet; the stepping motor and the two position sensors are electrically connected with the control mechanism.

3. The high wear screw motor of claim 1, wherein the movement mechanism further comprises a protective housing received in the receiving frame and connected to the bottom of the receiving frame, and a junction of the drive shaft of the stepper motor and the drive screw is located in the protective housing.

4. The high-wear-resistance screw motor according to claim 3, wherein the U-shaped sliding plate is provided with a clamping opening, the clamping opening is matched with the protective shell, and the protective shell can be inserted into the clamping opening.

5. The high wear screw motor of claim 4, wherein the U-shaped sliding plate is provided with a buffer post in the detent, the buffer post being abuttable against the protective housing.

6. The high wear resistant lead screw motor of claim 5, wherein said bumper post is a soft rubber post.

7. The high wear resistant lead screw motor of claim 5, wherein said buffer column is a soft silica gel column.

8. The high wear screw motor of claim 5, wherein the buffer post is a youli glue post.

9. The high wear lead screw motor of claim 1, wherein the sliding groove is a convex groove.

10. The high wear lead screw motor of claim 1, wherein the lead screw nut is an EPX lead screw nut.