A through-type lead screw motor guide mechanism

Abstract

The utility model relates to a kind of through type screw motor guiding mechanism, including movable seat, screw stepper motor, linear bearing and guide pillar, the front of movable seat is equipped with first through hole and second through hole, screw stepper motor is equipped with motor output screw rod, motor output screw rod passes through first through hole and is connected with movable seat, linear bearing is equipped with bearing hole, guide pillar passes through bearing hole and is connected with linear bearing, linear bearing passes through second through hole and is connected with movable seat. By screw motor guiding mechanism increases guide pillar, moving part is installed linear bearing, can effectively prevent jam in the movement process, torque is borne by guide pillar, motor output screw rod only bears front and back thrust and does not bear lateral torque, can be conducive to the protection screw stepper motor.

Description

Technical Field

[0001] This utility model relates to a through-type lead screw motor guide mechanism, belonging to the field of motor drive devices. Background Technology

[0002] The ball screw integrated stepper motor integrates a stepper motor and a ball screw into one unit, combining the precise control characteristics of the former with the high-precision transmission advantages of the latter. It can also be equipped with an encoder to achieve closed-loop control and is widely used in industrial automation, 3D printing, medical devices and smart home fields.

[0003] When current flows through the windings of a stepper motor, a magnetic field is generated, which in turn creates a magnetic force between the permanent magnet and the stator. Under this force, the coils on the rotor generate an electromotive force, causing the rotor to rotate. A nut mounted at the center of the rotor meshes with a lead screw. Because the rotation of the lead screw is constrained, it achieves linear motion when the rotor rotates. By changing the frequency and direction of the current in the coils, precise positioning and speed control can be achieved.

[0004] Ball screws are typically used in conjunction with linear guides, complementing each other to form the core of precision linear motion: the screw converts rotational motion into linear motion and transmits power, while the guide bears the load and lateral torque, compensating for the screw's shortcomings in load-bearing and torsional resistance. However, in compact structures and space-constrained installations, traditional guides are often unsuitable, necessitating the design of specialized non-standard guiding mechanisms for specific working conditions. Utility Model Content

[0005] This invention provides a through-type lead screw motor guiding mechanism, aiming to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a through-type lead screw motor guiding mechanism in which the motor output lead screw only bears the forward and backward thrust and not the lateral torque, which helps to protect the lead screw stepper motor.

[0006] The technical solution of this utility model relates to a through-type lead screw motor guide mechanism, including: The movable seat has a first through hole and a second through hole on its front side; A lead screw stepper motor, wherein the lead screw stepper motor is provided with a motor output lead screw, which passes through the first through hole and is connected to the movable seat; A linear bearing, wherein the linear bearing is provided with a bearing bore; A guide post passes through the bearing hole and connects to the linear bearing, and the linear bearing passes through the second through hole and connects to the movable seat.

[0007] Furthermore, it includes: an integrated motor guide post mounting base, wherein the integrated motor guide post mounting base has an inner groove, and the movable seat is disposed in the inner groove of the integrated motor guide post mounting base.

[0008] Furthermore, it includes: a zero-position inductive switch, which is installed in the inner groove of the motor guide post mounting bracket.

[0009] Furthermore, the left side wall of the motor guide post mounting base is provided with a third through hole, through which the motor output lead screw passes and connects to the motor guide post mounting base.

[0010] Furthermore, the left side wall of the integrated motor guide post mounting base is provided with a fourth through hole, and the right side wall of the integrated motor guide post mounting base is provided with a fifth through hole. The guide post passes through the fourth through hole and connects to the left side wall of the integrated motor guide post mounting base, and the guide post passes through the fifth through hole and connects to the right side wall of the integrated motor guide post mounting base.

[0011] Furthermore, it includes: a front dust cover, which is connected to the front side of the motor guide post mounting bracket.

[0012] Furthermore, it includes a rear dust cover, which is connected to the rear side of the motor guide post mounting bracket.

[0013] Furthermore, a protrusion is provided on the rear side of the integrated motor guide post mounting base. The through-type lead screw motor guide mechanism includes a mounting base plate, which is connected to the protrusion.

[0014] Furthermore, the movable seat has a screw position on its side, and the motor output screw and the movable seat are fixedly connected by a screw that passes through the screw position and locks the set screw.

[0015] Furthermore, the guide post is coplanar with the axis of the lead screw stepper motor.

[0016] The beneficial effects of this utility model are as follows.

[0017] This utility model discloses a through-type lead screw motor guiding mechanism, including a movable seat, a lead screw stepper motor, a linear bearing, and a guide post. The movable seat has a first through hole and a second through hole on its front side. The lead screw stepper motor has a motor output lead screw, which passes through the first through hole and connects to the movable seat. The linear bearing has a bearing hole, and the guide post passes through the bearing hole and connects to the linear bearing. The linear bearing passes through the second through hole and connects to the movable seat. By adding a guide post to the lead screw motor guiding mechanism and installing a linear bearing on the moving parts, jamming can be effectively prevented during movement. The torque is borne by the guide post, and the motor output lead screw only bears the forward and backward thrust and not the lateral torque, which helps protect the lead screw stepper motor. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of a through-type lead screw motor guide mechanism according to an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of a through-type lead screw motor guide mechanism according to an embodiment of the present utility model, without the addition of a front dust cover and a rear dust cover.

[0020] Figure 3 This is a structural schematic diagram of a through-type lead screw motor guide mechanism according to an embodiment of the present utility model, showing the front and rear views.

[0021] Figure 4 This is a three-view drawing of a through-type lead screw motor guide mechanism according to an embodiment of the present utility model.

[0022] Figure 5 This is a schematic diagram of an integrated mounting base for motor guide posts according to an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures: 100. Movable seat; 110. First through hole; 120. Second through hole; 130. Screw position; 140. Lead screw locking set screw; 200. Lead screw stepper motor; 210. Motor output lead screw; 300. Linear bearing; 310. Bearing bore; 400, guide post; 500, Motor guide post mounting bracket; 510, Inner groove; 520, Third through hole; 530, Fourth through hole; 540, Fifth through hole; 550, Protrusion; 600. Zero-position inductive switch; 710. Front dust cover; 720. Rear dust cover; 730. Mounting base plate. Detailed Implementation

[0024] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0025] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0026] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the scope of the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0027] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0028] See Figures 1 to 5 This utility model discloses a through-type lead screw motor guide mechanism, including a movable seat 100, a lead screw stepper motor 200, a linear bearing 300, and a guide post 400. The movable seat 100 has a first through hole 110 and a second through hole 120 on its front side. The lead screw stepper motor 200 has a motor output lead screw 210, which passes through the first through hole 110 and is connected to the movable seat 100. The linear bearing 300 has a bearing hole 310, and the guide post 400 passes through the bearing hole 310 and is connected to the linear bearing 300. The linear bearing 300 passes through the second through hole 120 and is connected to the movable seat 100.

[0029] Understandably, by adding a guide post 400 to the lead screw motor guiding mechanism and installing a linear bearing 300 on the moving parts, jamming can be effectively prevented during movement. The torque is borne by the guide post 400, and the motor output lead screw 210 only bears the forward and backward thrust and not the lateral torque, which helps to protect the lead screw stepper motor 200.

[0030] In a specific embodiment, the lead screw stepper motor 200 is configured as a closed-loop motor with an encoder.

[0031] In a specific embodiment, the motor output lead screw 210 has a first thread at its lead screw end and a second thread at its first through hole 110. The first thread and the second thread cooperate with each other to fix the motor output lead screw 210 and the movable seat 100 in a fixed connection.

[0032] Specifically, the lead screw end of the lead screw stepper motor 200 is machined with mounting threads, and the movable seat 100 is also machined with corresponding threaded holes. During installation, the lead screw is screwed into the corresponding threaded hole of the movable seat 100. The movable seat 100 is machined with two second through holes 120 for mounting the linear bearing 300.

[0033] In an application embodiment, the through-type lead screw motor guide mechanism includes two linear bearings 300 and two guide posts 400. The front side of the movable seat 100 is provided with a first through hole 110 and two symmetrical second through holes 120.

[0034] See Figure 2 and Figure 5 In some embodiments, the through-type lead screw motor guide mechanism includes: The motor guide post mounting base 500 has an inner groove 510, and the movable seat 100 is located in the inner groove 510 of the motor guide post mounting base.

[0035] It is understood that this utility model designs an integrated mounting base (i.e., the aforementioned integrated motor guide post mounting base) to realize the installation of the lead screw stepper motor 200 and the guide post 400, simplifying assembly and increasing structural rigidity.

[0036] In some embodiments, the through-type lead screw motor guide mechanism includes: Zero-position inductive switch 600 is installed in the inner groove 510 of the motor guide post mounting base.

[0037] In a specific embodiment, the zero-position induction switch 600 is installed on the lower side wall of the motor guide post mounting base 500.

[0038] Specifically, the zero-position sensor switch 600, with a mounting base, is installed in the inner groove 510 of the motor guide post mounting bracket 500. The zero-point sensor switch is installed on the motor guide post mounting bracket 500 and is used to determine the starting position when the lead screw stepper motor 200 returns to zero.

[0039] In some embodiments, the left side wall of the motor guide post mounting base 500 is provided with a third through hole 520, through which the motor output lead screw 210 passes and connects to the motor guide post mounting base 500.

[0040] In some embodiments, the left side wall of the motor guide post mounting base 500 is provided with a fourth through hole 530, and the right side wall of the motor guide post mounting base 500 is provided with a fifth through hole 540. The guide post 400 passes through the fourth through hole 530 and is connected to the left side wall of the motor guide post mounting base 500, and the guide post 400 passes through the fifth through hole 540 and is connected to the right side wall of the motor guide post mounting base 500.

[0041] Specifically, the lead screw stepper motor 200 is mounted and fixed on the motor guide post mounting base 500; the motor guide post mounting base 500 has four guide post 400 mounting holes (i.e., two fourth through holes 530 and two fifth through holes 540) for mounting the guide post 400.

[0042] See Figure 3 In some embodiments, the through-type lead screw motor guide mechanism includes: The front dust cover 710 is connected to the front side of the motor guide post mounting bracket 500.

[0043] See Figure 3 In some embodiments, the through-type lead screw motor guide mechanism includes: The rear dust cover 720 is connected to the rear side of the motor guide post mounting bracket 500.

[0044] See Figure 4 In some embodiments, a protrusion 550 is provided on the rear side of the motor guide post mounting bracket 500. The through-type lead screw motor guide mechanism includes a mounting base plate 730, which is connected to a protrusion 550.

[0045] See Figure 1 In some embodiments, the side of the movable seat 100 is provided with a screw position 130, and the motor output screw 210 and the movable seat 100 are fixedly connected by the screw locking set screw 140 passing through the screw position 130.

[0046] In a specific embodiment, the motor guide post mounting base 500 is provided with threaded holes, and the front dust cover 710, the rear dust cover 720 and the mounting base 730 are respectively connected to the front side, the rear side and the protrusion 550 of the motor guide post mounting base 500 through the threaded holes.

[0047] In the application embodiment, the motor guide post mounting base 500, the movable base 100, the front dust cover 710, and the rear dust cover 720 are all symmetrical about the upper and lower axes.

[0048] In some embodiments, the guide post 400 is coplanar with the axis of the lead screw stepper motor 200. Specifically, the two guide posts 400 are coplanar with the axis of the lead screw stepper motor 200, so that the torque is borne by the guide post 400, and the lead screw stepper motor 200 only bears the forward and backward thrust and not the lateral torque, thus preventing jamming.

[0049] Specifically, the above parts are assembled into a compact whole. The guide post 400 and the lead screw stepper motor 200 are coplanar. During movement, the torque is borne by the guide post 400. The motor output lead screw 210 only bears the forward and backward thrust and not the lateral torque, effectively protecting the lead screw stepper motor 200 and preventing jamming during movement. The motor guide post mounting base 500 has threaded holes for installing the front and rear dust covers 720, effectively protecting the guide post 400 from damage during operation. The above parts are assembled into a whole and then fixed to the mounting base 730 through the mounting holes (i.e., the aforementioned threaded holes) on the motor guide post mounting base 500.

[0050] It should be understood that this utility model designs an integrated ball screw stepper motor mechanism to realize the automatic trigger action of the manual spray gun. The guide rail structure is different from the traditional mechanism, with the addition of two non-biased guide posts 400 that are coplanar with the motor axis. The moving parts are equipped with linear bearings 300, which can effectively prevent jamming during the movement. The torque is borne by the guide posts 400, and the motor output screw 210 only bears the forward and backward thrust and does not bear the lateral torque, which plays a role in protecting the screw stepper motor 200.

[0051] In some application embodiments, the motor is not necessarily a through-type motor, but can be replaced by an actuator such as a cylinder.

[0052] Specifically, the movable seat 100 moves back and forth within the inner groove 510 of the motor guide post mounting base.

[0053] The above description is merely a preferred embodiment of this utility model. This utility model is not limited to the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this disclosure, as long as they achieve the same technical effect, should be included within the scope of protection of this disclosure and fall under the protection scope of this utility model. Within the protection scope of this utility model, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A through-type lead screw motor guide mechanism, characterized in that, include: The movable seat (100) has a first through hole (110) and a second through hole (120) on its front side. A lead screw stepper motor (200) is provided with a motor output lead screw (210), which passes through the first through hole (110) and is connected to the movable seat (100); A linear bearing (300) is provided with a bearing bore (310); The guide post (400) passes through the bearing hole (310) and is connected to the linear bearing (300). The linear bearing (300) passes through the second through hole (120) and is connected to the movable seat (100).

2. The through-type lead screw motor guide mechanism according to claim 1, characterized in that, include: The motor guide post mounting base (500) has an inner groove (510), and the movable seat (100) is disposed in the inner groove (510) of the motor guide post mounting base (500).

3. The through-type lead screw motor guide mechanism according to claim 2, characterized in that, include: A zero-position inductive switch (600) is installed in the inner groove (510) of the motor guide post mounting base (500).

4. The through-type lead screw motor guide mechanism according to claim 2, characterized in that, The left side wall of the motor guide post mounting base (500) is provided with a third through hole (520), and the motor output screw (210) passes through the third through hole (520) and connects to the motor guide post mounting base (500).

5. A through-type lead screw motor guide mechanism according to claim 2, characterized in that, The left side wall of the motor guide post mounting base (500) is provided with a fourth through hole (530), and the right side wall of the motor guide post mounting base (500) is provided with a fifth through hole (540). The guide post (400) passes through the fourth through hole (530) and is connected to the left side wall of the motor guide post mounting base (500). The guide post (400) passes through the fifth through hole (540) and is connected to the right side wall of the motor guide post mounting base (500).

6. A through-type lead screw motor guide mechanism according to claim 2, characterized in that, include: A front dust cover (710) is connected to the front side of the motor guide post mounting bracket (500).

7. A through-type lead screw motor guide mechanism according to claim 2, characterized in that, include: The rear dust cover (720) is connected to the rear side of the motor guide post mounting bracket (500).

8. A through-type lead screw motor guide mechanism according to claim 2, characterized in that, The rear side of the motor guide post mounting base (500) is provided with a protrusion (550). The through-type lead screw motor guide mechanism includes a mounting base plate (730), which is connected to the protrusion (550).

9. A through-type lead screw motor guide mechanism according to claim 1, characterized in that, The movable seat (100) has a screw position (130) on its side. The motor output screw (210) and the movable seat (100) are fixedly connected by a screw lock-locking set screw (140) passing through the screw position (130).

10. A through-type lead screw motor guide mechanism according to claim 1, characterized in that, The guide post (400) is coplanar with the axis of the lead screw stepper motor (200).

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