Linear motor module and stator leveling structure

Abstract

The utility model discloses a linear motor module and a stator leveling structure. The stator leveling structure is used for fixedly assembling the tail end of a motor stator of the linear motor and an end side plate, and comprises a first spherical surface adjusting pad provided with a first assembling hole; the first conical surface adjusting pad is provided with a second assembly hole, and the concave conical surface of the first conical surface adjusting pad abuts against the convex spherical surface of the first spherical surface adjusting pad to form linear contact; the locking piece comprises an adjusting end cap and a screw rod fixedly connected with the adjusting end cap, and the outer diameter of the screw rod is smaller than the aperture of the third assembly hole of the end side plate; the screw rod sequentially penetrates through the third assembly hole, the second assembly hole and the first assembly hole and then is screwed and fastened with the tail end of the motor stator, and the first conical surface adjusting pad and the first spherical surface adjusting pad are tightly pressed between the inner side surface of the end side plate and the tail end of the motor stator. According to the invention, the assembly deflection between the end side plate and the tail end of the motor stator is adjusted or compensated.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a linear motor module and a stator leveling structure. Background Art

[0002] Chinese patent CN205647230U discloses a linear motion drive device using a rod-shaped linear motor, including a base, a linear guide rail is provided on both sides of the base, and a motor stator fixing seat is provided at both ends of the base for fixing and installing the rod-shaped linear motor and having an anti-collision function; the rod-shaped linear motor includes a motor stator and a motor mover, the motor mover is sleeved on the motor stator, and the two ends of the motor stator are transversely fixed on the fixing seat. In this technical solution, the two ends of the motor stator are transversely fixed by the fixing seat, but the assembly positions of the fixing seats at both ends on the base are not necessarily completely at the same height. At the same time, since the motor mover is sleeved on the motor stator for horizontal linear movement, if the central axis of the motor stator is not parallel to the horizontal plane, the motor mover is easy to scratch or collide with the motor stator, causing the linear motor to be damaged or even scrapped and unable to operate normally. Utility Model Content

[0003] The utility model provides a linear motor module and a stator leveling structure, aiming to at least solve the technical problem in the prior art that the parallelism of the motor stator of the linear motor cannot be ensured and thus the linear motor is prone to failure or damage.

[0004] The utility model proposes a stator leveling structure, which is used to fix and assemble the motor stator end and the end side plate of the linear motor. The stator leveling structure specifically includes:

[0005] A first spherical adjustment pad having a first assembly hole;

[0006] A first conical surface adjustment pad has a second assembly hole, and the concave conical surface of the first conical surface adjustment pad abuts against the convex spherical surface of the first spherical surface adjustment pad to form a line contact;

[0007] A locking member, comprising an adjusting end cap and a screw fixedly connected to the adjusting end cap, wherein the outer diameter of the screw is smaller than the hole diameter of the third assembly hole of the end side plate;

[0008] The screw rod passes through the third assembly hole, the second assembly hole and the first assembly hole in sequence and is screwed and fastened with the end of the motor stator, pressing the first conical adjustment pad and the first spherical adjustment pad between the inner side surface of the end side plate and the end of the motor stator.

[0009] Preferably, a second spherical adjustment pad and a second conical adjustment pad are abutted between the outer side surface of the end side plate and the adjustment end cap, the second conical adjustment pad abuts against the inner side surface of the end side plate, and the convex spherical surface of the second spherical adjustment pad abuts against the concave conical surface of the second conical adjustment pad to form line contact.

[0010] Preferably, the first spherical adjustment pad and the end of the motor stator are an integral structure; or / and, the second spherical adjustment pad and the adjustment end cap are an integral structure.

[0011] Preferably, the first conical surface adjustment pad and the inner side surface of the end side plate are an integral structure; or / and, the second conical surface adjustment pad and the outer side surface of the end side plate are an integral structure.

[0012] The utility model also discloses a linear motor module, including a linear motor and a group of end side plates for fixing the linear motor, the linear motor including a motor stator and a motor mover sleeved on the motor stator, the end of the motor stator is assembled and connected to the end side plates using the stator leveling structure.

[0013] Preferably, the linear motor module further includes:

[0014] A box body, wherein an opposite side plate of the box body is a group of end side plates, a top surface of the box body is provided with a strip-shaped opening, and the linear motor is fixed in the box body;

[0015] A loading platform, fixedly connected to the motor mover of the linear motor, wherein the middle portion of the loading platform has a concave support platform;

[0016] A magnetic sealing belt is pressed on the support platform, and the end of the magnetic sealing belt is fixed to the box body to seal the strip-shaped opening.

[0017] Preferably, the upper surface of the support platform is configured as descending slopes from the middle to both ends, so that the support platform and the magnetic sealing belt are kept in contact.

[0018] Preferably, the motor mover is slidably connected to the bottom plate of the box; and a dust cover is provided above the support platform.

[0019] Preferably, the strip-shaped opening is provided with magnetic sealing strips on two opposite sides in the direction of the central axis of the motor stator; or / and magnets are provided at both ends of the motor mover.

[0020] Preferably, the box body has an air extraction interface externally connected to an air extraction pump; the box body is provided with a reading head, and the stage is provided with a strip grating.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The stator leveling structure disclosed in the utility model utilizes the first conical adjustment pad to abut against the first spherical adjustment pad to form a line contact, which plays a role in adjusting or compensating for the assembly deflection that exists during the process of fixing the end side plate and the motor stator end by the screw, thereby adjusting the parallelism of the motor stator and ensuring that the motor stator has a better parallelism to avoid damage caused by scratches or collisions between the motor movers during movement. At the same time, the first spherical adjustment pad cooperates with the first conical adjustment pad to improve the tightness between the end side plate and the motor stator end, and to seal the third assembly hole of the end side plate when the locking piece is fastened to the motor stator end. In addition, the stator leveling structure also has the advantages of simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the stator leveling structure;

[0024] Figure 2 It is a schematic diagram of the exploded structure of the stator leveling structure;

[0025] Figure 3 It is a schematic diagram of the internal structure of the stator leveling structure;

[0026] Figure 4 It is a three-dimensional structural diagram of the linear motor module.

[0027] Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure when the dust cover is omitted.

[0028] Figure 6 yes Figure 5 A structural schematic diagram when a long side plate of the box body and the magnetic sealing belt are further omitted. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined purpose, the specific implementation methods, structures, features and effects of the present application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0030] The utility model discloses a linear motor module, including a linear motor and a set of end side plates for fixing the linear motor. The linear motor includes a motor stator and a motor mover, and the motor mover is sleeved on the motor stator and can move linearly along the motor stator. Among them, the linear motor is connected to the end side plate assembly using a stator leveling structure, so that the parallelism of the motor stator can be adjusted conveniently by using the stator leveling structure to ensure that the central axis of the motor stator is horizontal, so that the motor mover of the linear motor moves smoothly relative to the motor stator, and the two will not scratch or collide to avoid damage, which is conducive to improving the service life and accuracy of the linear motor.

[0031] Combination Figure 1-Figure 3 As shown, the end of the motor stator 21 is assembled and fixed with the end side plate 11 by using a stator leveling structure. The figure only shows the motor stator 21 of the linear motor, and does not show the motor mover movably mounted on the motor stator 21. The shape and size of the end side plate 11 used to fix the linear motor are not limited, and the figure is only for reference.

[0032] The first embodiment of the stator leveling structure specifically includes: a first spherical adjustment pad 81, having a first assembly hole 811; a first conical adjustment pad 71, having a second assembly hole 711, the convex spherical surface of the first spherical adjustment pad 81 abuts against the concave conical surface of the first conical adjustment pad 71 to form a line contact; a locking piece 9, including an adjustment end cap 91 and a screw 92 fixedly connected to the adjustment end cap 91, the screw 92 sequentially passes through the third assembly hole 111 of the end side plate 11, the second assembly hole 711 of the first conical adjustment pad 71 and the first assembly hole 811 of the first spherical adjustment pad 81, and then is screwed into the end of the motor stator 21 of the linear motor.

[0033] The diameter of the third assembly hole 111 of the end side plate 11 is larger than the outer diameter of the screw rod 92 , so that the screw rod 92 has sufficient adjustment margin in the third assembly hole 111 .

[0034] The tightness of the threading between the screw rod 92 and the end of the motor stator 21 can be adjusted by the adjusting end cap 91 .

[0035] The first spherical adjustment pad 81 forms a line contact with the first conical adjustment pad 71 and is located between the end side plate 11 and the end of the motor stator 21, and is used to adjust or compensate for the assembly deflection that facilitates the screw 92 to fix the end side plate 11 and the end of the motor stator 21.

[0036] The locking piece 9 presses the first spherical adjustment pad 81 and the first conical adjustment pad 71 between the end side plate 11 and the end of the motor stator 21, which can not only improve the tightness between the end side plate 11 and the end of the motor stator 21, but also seal the third assembly hole 111 of the end side plate 11 when the locking piece 9 is tightened.

[0037] Therefore, using the stator leveling structure disclosed in the present application, the fixed position of the end of the motor stator 21 and the third assembly hole 111 of the end side plate 11 can be skewed and adjusted to ensure the parallelism of the motor stator 21 to improve the safety of the linear motor and avoid damage.

[0038] The operation method of using the stator leveling structure to adjust the parallelism of the motor stator 21 is as follows: first loosen the adjustment end cap 91, and after determining the radial and axial deviations of the center axis of the motor stator 21 relative to the center axis of the third assembly hole 111 (that is, after determining the correct assembly position of the end of the motor stator 21), tighten the adjustment end cap 91. The operation is simple and convenient.

[0039] Second embodiment of the stator leveling structure: Re-combination Figure 1-Figure 3 As shown, a second spherical adjustment pad 82 and a second conical adjustment pad 72 are abutted between the end side plate 11 and the adjustment end cap 91, and the second spherical adjustment pad 82 and the second conical adjustment pad 72 have the same structure as the first spherical adjustment pad 81 and the first conical adjustment pad 71, respectively, wherein the first conical adjustment pad 71 and the second conical adjustment pad 72 are abutted against two opposite sides of the end side plate 11, respectively.

[0040] The convex spherical surface of the second spherical adjustment pad 82 abuts against the concave conical surface of the second conical adjustment pad 72 to form a line contact. The second spherical adjustment pad 82 cooperates with the second conical adjustment pad 72 to fine-tune the connection between the locking member 9 and the screw rod 92 in the third assembly hole 111, which is beneficial to improve the leveling accuracy of the motor stator 21, and can also provide sealing for the third assembly hole 111 from the outer side of the assembly plate 11 to improve the sealing effect.

[0041] A third embodiment of the stator leveling structure: Based on the first embodiment or the second embodiment, the first spherical adjustment pad 81 and the end of the motor stator 21 are an integrated structure to reduce the number of components to simplify the assembly operation.

[0042] Or / and, the second spherical adjustment pad 82 and the adjustment end cap 91 are an integral structure, in which case the locking member 9 can be replaced by an existing round head screw. Such a design can reduce the number of components and is more conducive to assembly operations.

[0043] Fourth embodiment of the stator leveling structure: the first conical surface adjustment pad 71 and the inner side surface of the end side plate 11 are an integral structure, and in this case, the concave conical surface of the first conical surface adjustment pad 71 is equivalent to the conical surface chamfer opened at the inner end of the third assembly hole 111. Or / and, the second conical surface adjustment pad 72 and the outer side surface of the end side plate 11 are an integral structure, and in this case, the concave conical surface of the second conical surface adjustment pad 72 is equivalent to the conical surface chamfer opened at the outer end of the third assembly hole 111.

[0044] Further integration Figure 4-6 The schematic diagram of the structure of the linear motor module shown. The linear motor module disclosed in this embodiment includes a linear motor and a set of end side plates 11 for fixing the linear motor; the motor stator 21 of the linear motor is assembled and connected to the end side plates 11 using the stator leveling structure as described above, so as to facilitate the adjustment of the parallelism of the motor stator 21 and fix the assembly.

[0045] In some embodiments, the linear motor module is a fully enclosed structure, which can prevent dust generated during linear movement from spilling out and polluting the external environment, and meet the use requirements in a high-cleanliness environment. Specifically, the linear motor module also includes: a box body 1, an opposite side plate of the box body 1 is a set of end side plates 11, and the top surface of the box body 1 is provided with a strip-shaped opening (see Figure 6 As shown), the linear motor is fixed in the box body 1, that is, the two ends of the motor stator 21 are fixedly assembled with the end side plates 11 corresponding to the box body 1 by means of the stator leveling structure; the loading platform 3 is fixedly connected with the motor mover 22 of the linear motor so that the motor mover 22 drives the loading platform 3 to move linearly, and the middle part of the loading platform 3 has a concave support platform 31; the magnetic sealing belt 4 is pressed on the support platform 31, and the end of the magnetic sealing belt 4 is fixed to the box body 1 to seal the strip opening.

[0046] The upper surface of the support platform 31 is set as descending slopes from the middle to both ends, so that the support platform 31 and the magnetic sealing belt 4 are kept in contact with each other to avoid a gap between them and avoid dust generated in the box body 1 from overflowing from the gap.

[0047] The strip-shaped opening is provided with magnetic sealing strips 6 on two opposite sides of the central axis direction of the motor stator 21. Figure 6 The sealing strip 6 can generate magnetic attraction to the side of the magnetic sealing strip 4, thereby improving the sealing performance of the magnetic sealing strip 4 on the strip-shaped opening of the box body 1.

[0048] Wherein, magnets 24 are respectively provided at both ends of the motor mover 22. Figure 6The magnet 24 is used to produce downward magnetic attraction on the magnetic sealing belt 4, thereby reducing the gap that may be generated at the junction of the magnetic sealing belt 4 and the two ends of the stage 3 to improve the sealing effect of the strip-shaped opening.

[0049] Wherein, a dust cover 39 is provided above the support platform. Figure 4 The support platform 31 is covered by a dust cover 39 so that the gap between the support platform 31 and the magnetic sealing belt 4 is located in the dust cover 39, thereby further improving the sealing effect of the magnetic sealing belt 4 on the strip opening through the dust cover 39.

[0050] The motor mover 22 is slidably connected to the bottom plate of the box body 1, so that the bottom plate of the box body 1 provides support and guidance for the motor mover 22, thereby improving the working stability and accuracy of the linear motor module.

[0051] The box 1 has an air extraction interface 12 connected to an air extraction pump. Figure 6 The vacuum pump is used to evacuate air from the box 1 so that the air pressure inside the box 1 is lower than that outside the box 1, thereby preventing the dust generated inside the box 1 from overflowing outside the box 1.

[0052] The box body is provided with a reading head 18, and the outer side of the stage 31 is provided with a strip grating 38. Figure 6 When the linear motor drives the stage 31 to move linearly, the linear movement amount generated by the motor mover 22 of the linear motor can be accurately obtained by detecting the strip grating 38 using the reading head 18.

[0053] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A stator leveling structure, used for fixing and assembling the motor stator end and the end side plate of a linear motor, characterized in that: The stator leveling structure comprises: A first spherical adjustment pad having a first assembly hole; A first conical surface adjustment pad has a second assembly hole, and the concave conical surface of the first conical surface adjustment pad abuts against the convex spherical surface of the first spherical surface adjustment pad to form a line contact; A locking member, comprising an adjusting end cap and a screw fixedly connected to the adjusting end cap, wherein the outer diameter of the screw is smaller than the hole diameter of the third assembly hole of the end side plate; The screw rod passes through the third assembly hole, the second assembly hole and the first assembly hole in sequence and is screwed and fastened with the end of the motor stator. The first conical adjustment pad and the first spherical adjustment pad are pressed between the inner side surface of the end side plate and the end of the motor stator.

2. The stator leveling structure according to claim 1, characterized in that: A second spherical adjustment pad and a second conical adjustment pad are abutted between the outer side surface of the end side plate and the adjustment end cap, the second conical adjustment pad abuts against the inner side surface of the end side plate, and the convex spherical surface of the second spherical adjustment pad abuts against the concave conical surface of the second conical adjustment pad to form line contact.

3. The stator leveling structure according to claim 2, characterized in that: The first spherical adjustment pad and the end of the motor stator are an integral structure; or / and, the second spherical adjustment pad and the adjustment end cap are an integral structure.

4. The stator leveling structure according to claim 2, characterized in that: The first conical surface adjustment pad and the inner side surface of the end side plate are an integral structure; or / and, the second conical surface adjustment pad and the outer side surface of the end side plate are an integral structure.

5. A linear motor module, comprising a linear motor and a set of end side plates for fixing the linear motor, wherein the linear motor comprises a motor stator and a motor mover sleeved on the motor stator; characterized in that: The end of the motor stator is assembled and connected to the end side plate using the stator leveling structure described in any one of claims 1 to 4.

6. The linear motor module according to claim 5, characterized in that: Also includes: A box body, wherein an opposite side plate of the box body is a group of end side plates, a top surface of the box body is provided with a strip-shaped opening, and the linear motor is fixed in the box body; A loading platform, fixedly connected to the motor mover of the linear motor, wherein the middle portion of the loading platform has a concave support platform; A magnetic sealing belt is pressed on the support platform, and the end of the magnetic sealing belt is fixed to the box body to seal the strip-shaped opening.

7. The linear motor module according to claim 6, characterized in that: The upper surface of the support platform is respectively provided with descending inclined surfaces from the middle to both ends, so that the support platform and the magnetic sealing belt are kept in contact.

8. The linear motor module according to claim 6, characterized in that: The motor mover is slidably connected to the bottom plate of the box body; a dust cover is provided above the support platform.

9. The linear motor module according to claim 6, characterized in that: The strip-shaped opening is provided with magnetic sealing strips at two opposite sides in the direction of the central axis of the motor stator; or / and, magnets are provided at both ends of the motor mover.

10. The linear motor module according to claim 6, characterized in that: The box body has an air extraction interface externally connected to an air extraction pump; the box body is provided with a reading head, and the stage is provided with a strip grating.

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