Lead screw sliding rail module

Abstract

The utility model discloses a lead screw sliding rail module which comprises a sliding module body and a driving assembly, the sliding module body comprises a lead screw, a linear guide rail, an upper sliding block and a sliding nut, the sliding nut is fixedly connected with the upper sliding block, the upper sliding block is in sliding fit with the linear guide rail, the lead screw is in threaded fit with the sliding nut, and the lead screw is fixed in the axial direction; the driving assembly drives the screw rod to rotate; the sliding nut is located in the upper sliding block and located in the center of the upper sliding block in the axial direction. The sliding nut is arranged in the center of the upper sliding block, it is guaranteed that the two sides of the sliding nut are evenly stressed, the upper sliding block generates equal rotation resistance to the two ends of the sliding nut in the high-speed rotation process of the lead screw, and therefore axis deviation of the sliding nut is avoided, and the service life of the module is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor module design technical field especially relates to a screw rod sliding rail module. BACKGROUND

[0002] The motor module has become the universal scheme selected more when linear, curve movement, is widely used in each industry, has the advantages that stability is high, precision is high.

[0003] With the continuous development of industry, the requirement of response speed, running speed etc. is continuously improved, and the screw rod sliding rail module also gradually develops to high speed. In the traditional screw rod sliding rail module, the nut is located at one side of the sliding block, such as the patent number CN209743514U, the nut is installed at one end of the sliding block. When the overall structure of the module is thin and long, the length of the sliding block is also long, if the nut is arranged at one end of the sliding block, due to the uneven distribution of the mass of the sliding block at both ends of the nut, the force at both ends of the nut will be uneven, especially when the screw rod rotates at high speed, the difference of the rotating resistance of the sliding block at both ends of the nut will be more obvious, and then the nut eccentricity is caused, which affects the service life of the module.

[0004] In addition, when the driving motor cooperates with the screw rod, if the driving motor and the screw rod are coaxially arranged, the axial length of the module will be large, and the space occupied will be large. UTILITY MODEL CONTENTS

[0005] In order to solve the technical problem that the nut eccentricity is caused due to the uneven force at both ends of the nut in the existing screw rod sliding rail module, and the service life of the module is affected, the utility model provides a screw rod sliding rail module to solve the above problems.

[0006] The utility model solves its technical scheme that adopts technical scheme: a screw rod sliding rail module, including sliding module and drive assembly, sliding module includes screw rod, linear guide rail, upper sliding block and sliding nut, the sliding nut is fixedly connected with the upper sliding block, the upper sliding block is slidably connected with the linear guide rail, the screw rod is threadedly connected with the sliding nut, and the screw rod is fixed along the axial direction, the drive assembly drives the screw rod to rotate, the sliding nut is located in the inside of the upper sliding block, and the sliding nut is located in the center of the upper sliding block along the axial direction.

[0007] In the optional embodiment of the utility model, the lower sliding block is slidably connected on the linear guide rail, and the lower sliding block is fixedly connected with the upper sliding block.

[0008] In the optional embodiment of the utility model, the upper sliding block on the axial both sides of the sliding nut is fixedly connected with the lower sliding block.

[0009] In the optional embodiment of the utility model, the bottom of the upper sliding block has a gap groove, and the sliding nut is located in the gap groove.

[0010] In the optional embodiment of the utility model, the bottom of the upper sliding block has an insertion slot which is tightly fitted with the lower sliding block.

[0011] In the optional embodiment of the utility model, a nut mounting seat is fixed in the yielding slot, and the sliding nut is mounted in the nut mounting seat.

[0012] In the optional embodiment of the utility model, one end of the nut mounting seat in the axial direction has a matching hole, the sliding nut is located in the matching hole, a cover plate is fixed on the surface of the nut mounting seat, and the sliding nut is axially limited between the bottom surface of the cover plate and the matching hole.

[0013] In the optional embodiment of the utility model, a gap is left between the end face of the nut mounting seat where the matching hole is located and the upper sliding block, and the gap is greater than or equal to the axial length of the sliding nut.

[0014] In the optional embodiment of the utility model, the driving assembly comprises a driving motor, a gear box, a synchronous wheel and a synchronous belt, the driving motor is connected with the gear box, the central shafts of the driving motor and the gear box are arranged in parallel with the central shaft of the lead screw, a synchronous wheel is connected with one end of the lead screw at the output end of the gear box, and the two synchronous wheels are connected through the synchronous belt.

[0015] In the optional embodiment of the utility model, the linear guide rail is mounted on a guide rail seat, a motor mounting plate is fixed on the bottom of the guide rail seat, a plurality of mounting holes for fixing the driving motor are formed on the motor mounting plate, the mounting holes are waist-shaped holes, and the long axis of the waist-shaped hole is parallel with the longitudinal direction of the synchronous belt.

[0016] The utility model discloses the beneficial effect is:

[0017] (1) the utility model discloses the sliding nut is arranged in the center of the upper sliding block, guarantees that the sliding nut both sides are even, and the equal rotary resistance is generated to the both ends of the sliding nut of the upper sliding block in the high -speed rotation process of the lead screw, thereby avoiding the axial center of the sliding nut to deviate, improve the service life of module.

[0018] (2) the utility model discloses the sliding nut is mounted in the nut mounting seat, makes the radial deviation of the sliding nut, and is covered through the cover plate, guarantees that the sliding nut has no axial gap, guarantees that the module runs smoothly.

[0019] (3) the utility model discloses the waist-shaped hole and the driving motor assembly on the motor mounting seat, the length of synchronous belt is kept unchanged by adjusting the installation position of the driving motor. DRAWINGS

[0020] The utility model is further illustrated below in connection with the drawings and examples.

[0021] Figure 1 is the front view of the specific embodiment of the screw rod sliding rail module of the utility model;

[0022] Figure 2 is the exploded view of the specific embodiment of the screw rod sliding rail module of the utility model;

[0023] Figure 3 is the assembly schematic view of the upper sliding block and the nut mounting seat in the utility model;

[0024] Figure 4 is the cooperation schematic view of the screw rod sliding rail module in the section of the upper sliding block;

[0025] Figure 5 is the perspective view of the motor mounting seat in the utility model.

[0026] In the figure, 1, screw rod, 2, linear guide rail, 3, upper sliding block, 301, slot, 302, give way slot, 303, sliding part, 4, sliding nut, 5, shaft hole, 6, baffle, 7, guide rail seat, 8, bearing mounting seat, 9, nut mounting seat, 10, cover plate, 11, gap, 12, driving motor, 13, gear box, 14, synchronous wheel, 15, synchronous belt, 16, motor mounting plate, 17, mounting hole, 18, lower sliding block. DETAILED DESCRIPTION

[0027] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as a limitation of the utility model.

[0028] Embodiment one

[0029] As shown in Figures 1-3 A screw rod sliding rail module, comprising a sliding module and a driving assembly, the sliding module comprises a screw rod 1, a linear guide rail 2, an upper sliding block 3 and a sliding nut 4, the screw rod 1 is rotated by the driving assembly, the sliding nut 4 is fixedly connected with the upper sliding block 3, a client is installed at the top of the upper sliding block 3, the upper sliding block 3 is in sliding cooperation with the linear guide rail 2, the upper sliding block 3 has an axial through shaft hole 5 for the screw rod 1 to pass through, the screw rod 1 does not contact the inner wall of the shaft hole 5, the screw rod 1 is in threaded cooperation with the sliding nut 4, and the screw rod 1 is fixed in the axial direction, that is, the screw rod 1 cannot be axially displaced, when the driving assembly is started, the screw rod 1 is rotated, since the screw rod 1 cannot be axially displaced, and the sliding nut 4 cannot rotate circumferentially under the limitation of the upper sliding block 3, therefore the sliding nut 4 moves along the helical line of the screw rod 1, so that the sliding nut 4 generates axial translation, and further drives the client at the top of the upper sliding block 3 to move in translation.

[0030] The sliding nut 4 is located in the interior of the upper sliding block 3, and the sliding nut 4 is located at the center of the upper sliding block 3 in the axial direction. When the lead screw 1 rotates, the upper sliding block 3 generates a rotating resistance to the sliding nut 4, so as to prevent the sliding nut 4 from rotating synchronously with the lead screw 1. When the length of the upper sliding block 3 is relatively long, the upper sliding block 3 beyond the length of the sliding nut 4 also generates a resistance to the sliding nut 4, and the resistance has a greater influence on the end of the sliding nut 4. If the distance between the upper sliding block 3 beyond the two ends of the sliding nut 4 is not equal, the force on the two ends of the sliding nut 4 is not uniform. Therefore, the utility model places the sliding nut 4 at the center of the upper sliding block 3, so that the weight of the upper sliding block 3 located at the two ends of the sliding nut 4 is approximately equal, or the length of the upper sliding block 3 located at the two ends of the sliding nut 4 is equal to the length of the linear guide rail 2.

[0031] The upper sliding block 3 is preferably a symmetrical structure with the length direction center as the symmetrical axis.

[0032] For the sliding cooperation between the upper sliding block 3 and the linear guide rail 2:

[0033] The upper sliding block 3 can be directly cooperated with the linear guide rail 2. When the upper sliding block 3 is relatively long, the lower sliding block 18 is preferably connected with the linear guide rail 2 in a sliding manner, and the lower sliding block 18 is fixedly cooperated with the upper sliding block 3. At this time, the lower sliding block 18 can be provided in a plurality of forms, such as Figure 4 As shown in the figure, the bottom of the lower sliding block 18 is cooperated with the linear guide rail 2, and the top is fixed with the upper sliding block 3. The cooperation length of each lower sliding block 18 with the linear guide rail 2 is relatively small, and the cooperation precision is ensured through the cooperation of multiple point positions and small areas. The lower sliding block 18 can be fixed on the bottom of the upper sliding block 3 through bolt connection or welding and the like. In order to ensure the coaxiality, the bottom of the upper sliding block 3 is provided with a slot 301 which is tightly cooperated with the lower sliding block 18. The tight cooperation is an interference fit. As shown in Figure 3 and Figure 4 The slot 301 is formed by the baffle 6 extending downward from the two sides of the upper sliding block 3, and the two baffles 6 are tightly cooperated with the side surface of the lower sliding block 18, so as to clamp the lower sliding block 18 between the two baffles 6. The slot 301 can clamp the upper sliding block 3 on the lower sliding block 18, so that the upper sliding block 3 cannot produce radial deflection.

[0034] In the embodiment, the linear guide rail 2 located at the two ends of the sliding nut 4 is provided with the lower sliding block 18, which is used for connecting with the upper sliding block 3 protruding from the two ends of the sliding nut 4. One or more lower sliding blocks 18 can be provided on each side, mainly according to the length of the upper sliding block 3 to reasonably configure, and one lower sliding block 18 is provided on each side in the embodiment.

[0035] The installation of the lead screw 1:

[0036] As shown in Figure 1 and Figure 2As shown, the linear guide rail 2 is fixed on the guide rail base 7, and the bearing mounting seat 8 is fixed on both ends of the guide rail base 7, and the screw rod 1 is assembled with the bearing in the bearing mounting seat 8, and the bearing mounting seat 8 plays a role in supporting the screw rod 1 and enabling the screw rod 1 to rotate freely.

[0037] Mounting of the sliding nut 4:

[0038] The bottom of the upper sliding block 3 has a displacement slot 302, and the sliding nut 4 is located in the displacement slot 302. Figure 3 As shown, the upper sliding block 3 forms a sliding part 303 for mounting the lower sliding block 18 on both sides of the displacement slot 302. The sliding nut 4 can be directly assembled with the upper sliding block 3, and at this time, a mounting position needs to be processed in the upper sliding block 3, which will increase the processing difficulty of the upper sliding block 3. Therefore, in this embodiment, a nut mounting seat 9 is fixed in the displacement slot 302, and the sliding nut 4 is mounted in the nut mounting seat 9. The outer shape of the nut mounting seat 9 is a simple square structure, and only a matching hole needs to be processed on the nut mounting seat 9. The sliding nut 4 is fixed by being interference-fitted in the matching hole, which can ensure that the sliding nut 4 does not produce radial deviation.

[0039] In further design, the matching hole is located at one end of the nut mounting seat 9 in the axial direction, and the nut mounting seat 9 is fixed with a cover plate 10 on the surface. The sliding nut 4 is limited in the axial direction between the cover plate 10 and the bottom surface of the matching hole, which ensures that the sliding nut 4 and the upper sliding block 3 will not produce axial relative motion. The hole diameter of the matching hole is greater than the hole diameter of the shaft hole 5, and the sliding nut 4 is limited in the matching hole, and the axial and radial directions of the sliding nut 4 are fixed by the nut mounting seat 9 and the cover plate 10.

[0040] In order to facilitate the installation of the sliding nut 4, a gap 11 is left between the end face of the nut mounting seat 9 where the matching hole is located and the upper sliding block 3, and the gap 11 is greater than or equal to the axial length of the sliding nut 4. When installing, the nut mounting seat 9 is first fixed with the upper sliding block 3, and the sliding nut 4 can be installed in the matching hole through the gap 11. Since the upper sliding block 3 is a symmetrical structure, the other end of the nut mounting seat 9 also has a gap 11 with the inner surface of the upper sliding block 3.

[0041] The driving assembly generally includes a driving motor 12 and a gear box 13, and the driving motor 12 is connected with the screw rod 1 through the gear box 13 after being decelerated. The driving motor 12 and the screw rod 1 can be coaxially arranged (not shown in the drawing).

[0042] Embodiment two

[0043] In the embodiment one, the driving motor 12 and the screw rod 1 are coaxially arranged. When the driving motor 12 is relatively long, for example, a hollow cup motor with high rotating speed and fast response speed is used, it will cause the whole module to be too long and slender. Therefore, the following improvements are made in this embodiment:

[0044] The drive assembly includes a drive motor 12, a gearbox 13, synchronous pulleys 14, and a synchronous belt 15. The central axes of the drive motor 12 and the gearbox 13 are arranged parallel to the central axis of the lead screw 1. Synchronous pulleys 14 are connected to the output end of the gearbox 13 and one end of the lead screw 1, respectively. The two synchronous pulleys 14 are connected by the synchronous belt 15. Figure 1 As shown, the drive motor 12 and gearbox 13 are located below the lead screw 1. The module is broken off by the turning setting of the synchronous pulley 14, thereby shortening the total length of the module and saving space in the length direction.

[0045] Installation of drive motor 12:

[0046] like Figure 1 As shown, a motor mounting plate 16 is fixed to the bottom of the guide rail seat 7. The motor mounting plate 16 has multiple mounting holes 17 for fixing the drive motor 12. The gearbox 13 and the drive motor 12 are installed as an integral structure. The end of the outer shell of the drive motor 12 is attached to the motor mounting plate 16 and fixed through the mounting holes 17.

[0047] Example 3

[0048] Since the length of the timing belt 15 on the timing pulley 14 cannot be adjusted, it is often a standard part. To avoid the drive motor 12 being unable to cooperate with the timing pulley 14 after installation, this embodiment sets the mounting hole 17 as an oblong hole, and the long axis of the oblong hole is parallel to the longitudinal direction of the timing belt 15. Figure 1 As shown, the longitudinal direction of the synchronous belt 15 is vertical, so the long axis of the waist-shaped hole is arranged vertically, which allows the drive motor 12 to adjust its height in the vertical direction at any time during installation, thereby achieving the purpose of cooperating with the synchronous pulley 14.

[0049] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "length", "upper", "lower", "vertical", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0051] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A lead screw slide module, comprising: The utility model relates to a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

2. The lead screw slide module of claim 1, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

3. The lead screw slide module of claim 2, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

4. The lead screw slide module of claim 1, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

5. The lead screw slide module of claim 2, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

6. The lead screw slide module of claim 4, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

7. The lead screw slide module of claim 6, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

8. The lead screw slide module of claim 7, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

9. The lead screw slide module of claim 1, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment.

10. The lead screw slide module of claim 9, wherein: The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. The utility model discloses a slide module, drive assembly and linear guide rail seat, and belongs to the field of mechanical equipment. 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