Sealing protection linear motor

Abstract

The utility model relates to the technical field of motors, in particular to a sealing protection linear motor, which comprises a base, a motor assembly and a loading table. The top end face of the machine base is provided with an installation table face which is provided with an avoiding groove. The motor assembly comprises a motor stator and a motor rotor which are located in the machine base. The material carrying table comprises a table base arranged on the mounting table top in a sliding manner and bearing plates fixed to the two opposite sides of the table base, and the motor rotor is fixedly connected with the table base through an avoiding groove; baffles are fixed to the two opposite ends of the installation table face respectively. Side face protection pieces are fixed to the two opposite sides of the installation table top respectively. The sealing protection device further comprises a top face protection part, the pedestal, the baffle and the side face protection parts are all located below the top face protection part, the two opposite side edges of the top face protection part are at least partially overlapped with the corresponding protection parts respectively, and the reliable sealing protection performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a sealed and protected linear motor. Background Art

[0002] Linear motors provide fast linear reciprocating motion, and have advantages such as high motion speed, high positioning accuracy, and fast response. They are widely used in high-precision machine tool processing equipment. Since linear motors are generally installed near the workbench of machine tools, impurities such as machining fluid, iron filings, and metal powders are likely to damage the linear motor during the processing, affecting the service life and working reliability of the linear motor.

[0003] The prior art, such as Chinese Patent CN210867362U, discloses a fully sealed linear motor module, which uses a flexible steel belt to pass through the loading platform for sealing. However, during the movement of the loading platform, a gap will be generated between the flexible steel belt and the side of the machine base, and the sealing and protection effect is limited, which cannot meet the high-reliability sealing and protection requirements during the processing of the linear motor. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a sealed and protected linear motor with reliable sealing and protection performance.

[0005] The utility model provides a sealed and protected linear motor, which includes a machine base, a motor assembly and a loading platform; an installation table surface is provided on the top end surface of the machine base, and the installation table surface has an avoidance groove; the motor assembly includes a motor stator and a motor mover located in the machine base; the loading platform includes a pedestal slidably arranged on the installation table surface and bearing plates fixed on two opposite sides of the pedestal, and the motor mover is fixedly connected with the pedestal through the avoidance groove; baffles are respectively fixed at two opposite ends of the installation table surface; side protection members are respectively fixed on two opposite sides of the installation table surface; a top protection member is further included, the pedestal, the baffles and the side protection members are all located below the top protection member, and two opposite side edges of the top protection member respectively overlap at least partially with the corresponding protection members.

[0006] In some preferred embodiments, the top protection member includes a protection top cover covering above the pedestal, and two opposite side edges of the protection top cover at least partially overlap with the outer side plates of the protection members.

[0007] In some preferred embodiments, a second groove is provided between the bearing plate and the pedestal, and two opposite sides of the protection top cover are inserted into the second groove.

[0008] In some preferred embodiments, the upper end surface of the protection top cover is lower than the upper end surface of the bearing plate, and the upper end surface of the protection top cover is set as an arc surface or an inclined surface with a higher middle part and lower two opposite sides.

[0009] In some preferred embodiments, a first groove is provided on the lower side of the material loading table close to the motor mover, and the outer plate of the side protection member is inserted upward into the first groove.

[0010] In some preferred embodiments, lower step portions are respectively provided on two opposite sides of the installation tabletop, the side protection member is fixed on the step portion, and the inner plate of the side protection member abuts against the vertical side wall of the step portion.

[0011] In some preferred embodiments, a sliding seat and a sliding rail in sliding fit are provided between the pedestal and the installation tabletop, and one of the sliding seat and the sliding rail is fixed to the pedestal and the other is fixed to the installation tabletop.

[0012] In some preferred embodiments, the top protection member further includes a flexible protection cover located inside the protection top cover, and a flexible protection cover is respectively provided between each baffle and the corresponding end of the material loading table.

[0013] In some preferred embodiments, each side protection member has a protection groove, and the side edges of each flexible protection cover are located in the corresponding protection groove.

[0014] In some preferred embodiments, the cross section of the side protection member is U-shaped, and both opposite ends of the protection groove are provided with notches with open settings.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] Since the pedestal, the baffle and the side protection member of the material loading table are all located below the top protection member, in addition to the top protection member providing sealing protection in the top direction for the avoidance groove, the two baffles are used in cooperation with the top protection member to provide sealing protection in the end face direction for the avoidance groove from the two opposite ends, and the two opposite side edges of the top protection member are respectively arranged in at least partial overlap with the corresponding protection members to provide sealing protection for the two opposite side edges of the avoidance groove. Thus, the top protection member, the baffle and the side protection member cooperate with each other to jointly achieve reliable sealing protection performance for the avoidance groove of the installation tabletop, and can ensure that machining fluid, debris, etc. cannot enter the machine base from the avoidance groove of the installation tabletop, which is beneficial to improving the working reliability of the linear motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the first embodiment of the sealed protection linear motor.

[0018] Figure 2 is a right view of the first embodiment of the sealed protection linear motor.

[0019] Figure 3 is an assembly structural schematic diagram of the motor mover and the material loading table.

[0020] Figure 4It is a schematic cross-sectional structure diagram of the material loading table.

[0021] Figure 5 It is a schematic three-dimensional structure diagram of the second embodiment of the sealed and protected linear motor.

[0022] Figure 6 It is a schematic diagram of a partial internal structure of the sealed and protected linear motor.

[0023] Figure 7 It is Figure 6 a partial enlarged view of Specific Embodiments

[0024] To further elaborate on the technical means and effects adopted by the present application to achieve the predetermined purpose, the following combines the accompanying drawings and preferred embodiments to detail the specific implementation manners, structures, features, and effects according to the present application. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0025] Combined with Figures 1 - 4 Shown in the first embodiment, the present utility model discloses a sealed and protected linear motor, including a machine base 1, a motor assembly, and a material loading table 2; the top surface of the machine base 1 is provided with an installation table surface 11, and the installation table surface has an avoidance groove; the motor assembly includes a motor stator located in the machine base 1 and a motor mover 9 that cooperates with the motor stator; the material loading table 2 is slidably arranged on the installation table surface 11 and is connected to the motor mover 9 through the avoidance groove. The material loading table 2 includes a pedestal 21 slidably arranged on the installation table surface 11 and bearing plates 22 fixed on two opposite sides of the pedestal 21, and the upper end surfaces of the bearing plates 22 extend upward beyond the upper end surface of the pedestal 2, so that the workpieces to be processed can be fixed on the bearing plates 22; baffles 3 are respectively fixed at two opposite ends of the installation table surface 1; side protection members 5 are respectively fixed on two opposite sides of the installation table surface 11, and each side protection member 5 has a protection groove 50; it further includes a top protection member. The pedestal 21 of the material loading table 2, the baffles 3, and the side protection members 4 are all located below the top protection member, and two opposite side edges of the top protection member respectively overlap at least partially with the corresponding protection members 5.

[0026] Since the pedestal 21 of the material loading table 2, the baffle 3 and the side protection member 4 are all located below the top protection member, in addition to the top protection member providing sealing protection for the avoidance groove in the top direction, the two baffles 3 cooperate with the top protection member to provide sealing protection for the avoidance groove in the end face direction from the opposite ends, and the two opposite side edges of the top protection member are respectively at least partially overlapped with the corresponding protection member 5 to provide sealing protection for the two opposite side edges of the avoidance groove. Thus, the top protection member, the baffle 3 and the side protection member 4 cooperate with each other to jointly provide reliable sealing protection performance for the avoidance groove of the installation table surface, and can ensure that machining fluid, debris, etc. cannot enter the machine base from the avoidance groove of the installation table surface, which is beneficial to improving the working reliability of the linear motor.

[0027] In the first embodiment, the top protection member includes a protection top cover 6 covering above the pedestal 21. The pedestal 21, the baffle 3 and the side protection member 4 are all located below the protection top cover 6. Adding the protection top cover 6 can block most of the machining fluid, debris and other sundries falling onto the linear motor during the use of the linear motor, and reduce the sundries falling onto the flexible protection cover 4. Thus, the protection top cover 6 and the flexible protection cover 4 cooperate with each other to form a multi-layer sealing protection for the avoidance groove to further improve the sealing protection performance.

[0028] A second groove 24 is provided between the bearing plate 22 and the pedestal 21, and the two opposite side edges of the protection top cover 6 are inserted into the second groove 24, so that the protection top cover 6 is easy to assemble, disassemble and maintain.

[0029] At the same time, the two opposite side edges of the protection top cover 6 and the outer plate 51 of the protection member 5 are at least partially overlapped, that is, the two opposite side edges of the protection top cover 6 at least partially overlap in the orthographic projection of the outer plate 51 of the protection member 5, so as to improve the cooperation between the protection top cover 6 and the protection member 5 and achieve reliable sealing protection for the avoidance groove from the two opposite sides of the installation table surface.

[0030] In addition, the upper end surface of the protection top cover 6 is set lower than the upper end surface of the bearing plate 22, so that the protection top cover 6 will not interfere with the fixing of the workpiece on the bearing plate 22. And, the upper end surface of the protection top cover 6 is set as an arc surface or an inclined surface with a higher middle part and lower two opposite sides, so that the machining fluid and other sundries falling into the protection top cover 6 can be guided by the arc surface or inclined surface structure to quickly slide down to the two opposite sides, which is beneficial to further improving the protection effect of the protection top cover 6.

[0031] Among them, the flexible protection cover 4 has various implementation forms, including but not limited to a flexible waterproof cloth or a bellows protection cover.

[0032] Further combined with Figures 6 - 7The second embodiment shown. The top protective member further includes a flexible protective cover 4. Moreover, a flexible protective cover 4 is respectively provided between each baffle 3 and the end of the corresponding material loading table 2, and the two flexible protective covers 5 are also both located inside the protective top cover 6. The flexible protective cover 4 is used to provide sealing protection for the avoidance groove, so as to prevent machining fluid, debris, etc. from entering the machine base 1 from the avoidance groove during use.

[0033] Specifically, the motor mover 9 drives the material loading table 2 to perform a linear reciprocating motion relative to the installation table 11 as required. Therefore, the position of the material loading table 2 on the installation table 11 is not fixed. When the motor mover 9 drives the material loading table 2 to move linearly in the first direction, one flexible protective cover 4 located at the front end in the first direction is compressed and shortened by the material loading table 2, and the other flexible protective cover 4 located at the rear end in the first direction is stretched by being pulled by the material loading table. However, the two opposite sides of the flexible protective cover 4 are always hermetically connected to the two opposite sides of the installation table 11. Thus, by the coordinated cooperation of the two flexible protective covers 4 and the material loading table 2, the avoidance groove can be hermetically protected, ensuring that machining fluid, debris, etc. cannot enter the machine base 1 from the avoidance groove of the installation table 1.

[0034] It can be seen that the utility model provides a reliable sealing protection performance for the avoidance groove of the installation table 11 by arranging the flexible protective cover 4 between the material loading table 2 and the baffle 3. The flexible protective cover 4 can be compressed or stretched as required but always remains hermetically connected to the installation table 11. The coordinated cooperation of the two flexible protective covers 4 and the material loading table 2 can ensure that machining fluid, debris, etc. cannot enter the machine base 1 from the avoidance groove of the installation table 1, which is beneficial to improving the working reliability of the linear motor.

[0035] In order to simplify the requirements for the sealing assembly between the two opposite sides of the flexible protective cover 4 and the two opposite sides of the installation table 11 and improve the reliability of their hermetic connection, in some preferred embodiments, side protective members 5 are respectively fixed on the two opposite sides of the installation table 11. Each side protective member 5 has a protective groove 50, and the side of each flexible protective cover 3 is located in the corresponding protective groove 50.

[0036] The cross-section of the side protective member 2 is U-shaped, and both opposite ends of the protective groove 50 are provided with open slots. Therefore, when machining fluid, debris, etc. fall on the flexible protective cover 4, they will enter the protective groove 50 and be discharged in time from the slots at the two opposite ends.

[0037] In addition, lower step portions 12 are respectively provided on the two opposite sides of the installation table 11. The side protective members 5 are fixed on the step portions 12, and the inner side plate 52 of the side protective member 5 abuts against the vertical side wall of the step portion 12. Moreover, a first groove 23 is provided on the lower side of the material loading table 2 close to the motor mover, and the outer side plate 51 of the side protective member 5 is inserted upward into the first groove 23.

[0038] Therefore, by inserting the outer plate 51 of the side protection member 5 upward into the first groove 23 of the loading table 2, the side protection member 5 will not interfere with the linear movement of the loading table 2. Even more, the loading table 2 can form a sliding fit between the two opposite first grooves 23 of the loading table 2 and the outer plates 51 of the corresponding side protection members 5 on the corresponding sides, so that the loading table 2 is slidably arranged on the installation table surface 11.

[0039] Among them, the main function of the loading table 2 is to install the workpiece to be processed, and the motor assembly is used to drive the loading table 2 to drive the workpiece to move linearly to the required processing position as needed.

[0040] In order to make the loading table 2 slide more smoothly on the installation table surface 11, with less resistance and more accurate linear movement, a sliding seat 81 and a slide rail 82 with a sliding fit are provided between the pedestal 21 and the installation table surface 11, and one of the sliding seat 81 and the slide rail 82 is fixed to the pedestal 21 and the other is fixed to the installation table surface 11. For example, Figure 4 、 Figure 5 In the illustrated embodiment, sliding seats 81 and slide rails 82 are respectively provided on two opposite sides of the installation table surface 11 located in the avoidance groove. Among them, a sliding seat 81 is constructed on the lower side surface of the pedestal 21, and a mating slide rail 82 is correspondingly constructed on two opposite sides of the installation table surface 11.

[0041] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sealed and protected linear motor, comprising a machine base, a motor assembly and a material-carrying table; an installation table surface is provided on the top end surface of the machine base, and the installation table surface has an avoidance groove; the motor assembly includes a motor stator and a motor mover located in the machine base; the material-carrying table includes a pedestal slidably arranged on the installation table surface and bearing plates fixed on two opposite sides of the pedestal, and the motor mover is fixedly connected to the pedestal through the avoidance groove; characterized in that: Baffles are respectively fixed at two opposite ends of the installation table surface; Side protection members are respectively fixed on two opposite sides of the installation table surface; It further includes a top surface protection member, the pedestal, the baffles and the side protection members are all located below the top surface protection member, and two opposite side edges of the top surface protection member are at least partially overlapped with the corresponding protection members.

2. The sealed and protected linear motor according to claim 1, wherein: The top surface protection member includes a protective top cover covering above the pedestal, and two opposite side edges of the protective top cover are at least partially overlapped with the outer side plates of the protection members.

3. The hermetic protection linear motor according to claim 1, characterized in that: A second groove is provided between the bearing plate and the pedestal, and two opposite sides of the protective top cover are inserted into the second groove.

4. The sealed and protected linear motor according to claim 1, wherein: The upper end surface of the protective top cover is lower than the upper end surface of the bearing plate, and the upper end surface of the protective top cover is set as an arc surface or an inclined surface with a higher middle part and lower two opposite sides.

5. The hermetic protection linear motor according to claim 1, characterized in that: A first groove is provided on the lower side surface of the material-carrying table close to the motor mover, and the outer side plate of the side protection member is inserted upward into the first groove.

6. The hermetic protection linear motor according to claim 1, characterized in that: Step portions with lower positions are respectively provided on two opposite sides of the installation table surface, the side protection members are fixed on the step portions, and the inner side plates of the side protection members are in contact with the vertical side walls of the step portions.

7. The sealed and protected linear motor according to claim 1, wherein: A sliding seat and a slide rail in sliding fit are provided between the pedestal and the installation table surface, and one of the sliding seat and the slide rail is fixed to the pedestal and the other is fixed to the installation table surface.

8. The sealed and protected linear motor according to any one of claims 1-7, characterized in that: The top surface protection member further includes a flexible protective cover located inside the protective top cover, and a flexible protective cover is respectively provided between each baffle and the corresponding end of the material-carrying table.

9. The sealed and protected linear motor according to claim 8, wherein: Each side protection member has a protection groove, and the side edges of each flexible protective cover are located in the corresponding protection grooves.

10. The hermetic protection linear motor according to claim 9, wherein: The cross section of the side protection member is U-shaped, and both opposite ends of the protection groove have notches with open settings.

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