Guide rail lifting mechanism

Abstract

The utility model discloses a guide rail lifting mechanism which comprises a base, a shaft seat, a lifting assembly, a lead screw and a lifting seat. A cavity is formed in the base, a first sliding block is arranged on one cavity wall of the cavity, and a second sliding block is arranged on the other cavity wall of the cavity; the shaft seat is arranged in the base and divides the cavity into an upper cavity and a lower cavity; the lifting assembly is arranged on the base; the lead screw is rotatably arranged on the shaft seat, the lower end of the lead screw is located in the lower cavity and driven by the lifting assembly to rotate along the shaft seat, and the upper end of the lead screw is located in the upper cavity; a first sliding rail is arranged on one side of the lifting base and can ascend and descend along the first sliding block, a second sliding rail is arranged on the other side of the lifting base and can ascend and descend along the second sliding block, a receding groove for the lead screw to penetrate through is formed in the middle of the lifting base, and a nut sleeve in threaded connection with the lead screw is arranged at a groove opening of the receding groove. The lifting seat is simple in structure, low in cost and stable in lifting process.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a guide rail lifting mechanism. Background Art

[0002] In precision machining, guide rail lifting mechanism is a common lifting mechanism. For example, the patent document with application number 201820522229.5 discloses a double-guide rail lifting platform, which includes a fixed bottom plate, and two vertically arranged supporting middle plates are installed on the upper end of the fixed bottom plate. An eight-shaped lifting corner block is installed between the supporting middle plates through fixing bolts, and one end of the lifting corner block is connected to an adjustment fine-tuning head. Two vertically arranged ball fixed guide rails are installed on the opposite outer upper ends of the two supporting middle plates. The ball fixed guide rails and the matching ball movable guide rails are vertically arranged and installed on the upper end of the lifting middle plate, and cross balls are installed between the ball movable guide rail and the ball fixed guide rail. The overall structure of the lifting mechanism in the related art is relatively complex and the cost is high. In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus this case was created. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the above technology at least to a certain extent. To this end, the purpose of the utility model is to provide a guide rail lifting mechanism with a simple structure, low cost and stable lifting process of the lifting seat.

[0004] To achieve the above-mentioned purpose, the utility model proposes a guide rail lifting mechanism, including a base, an axle seat, a lifting assembly, a screw rod and a lifting seat; a cavity is formed in the base, a first slider is arranged on one cavity wall of the cavity, and a second slider is arranged on the other cavity wall of the cavity; the axle seat is arranged in the base and divides the cavity into an upper cavity and a lower cavity; the lifting assembly is arranged on the base; the screw rod is rotatably arranged on the axle seat, the lower end of the screw rod is located in the lower cavity and is driven by the lifting assembly to rotate along the axle seat, and the upper end of the screw rod is located in the upper cavity; a first slide rail is arranged on one side of the lifting seat, and the first slide rail can be lifted and lowered along the first slider, and a second slide rail is arranged on the other side of the lifting seat, and the second slide rail can be lifted and lowered along the second slider, and a clearance groove for the screw rod to pass through is arranged in the middle of the lifting seat, and a nut sleeve threadedly connected to the screw rod is arranged at the notch of the clearance groove.

[0005] Furthermore, a first mounting groove and a second mounting groove are arranged in the base, the first mounting groove is arranged in the first sliding block, and the second mounting groove is arranged in the second sliding block.

[0006] Further, the first slider includes a first slider body, a first upper slider and a first lower slider, the first upper slider is locked at the upper end of the first slider body, the first upper slider is provided with a first upper slide groove cooperating with the first slide rail, the first lower slider is locked at the lower end of the first slider body, and the first lower slider is provided with a first lower slide groove cooperating with the first slide rail.

[0007] Further, the second slider includes a second slider body, a second upper slider and a second lower slider, the second upper slider is locked at the upper end of the second slider body, the second upper slider is provided with a second upper slide groove cooperating with the second slide rail, the second lower slider is locked at the lower end of the second slider body, and the second lower slider is provided with a second lower slide groove cooperating with the second slide rail.

[0008] Furthermore, a boss is formed in the middle of the shaft seat, and a mounting hole is arranged in the boss; it also includes a flange and a locking nut, the flange is arranged in the mounting hole, and the screw rod is connected to the locking nut after passing through the flange; a positioning ring is arranged on the screw rod and abuts against the flange.

[0009] Furthermore, the locking nut is a thread-flank locking nut.

[0010] Furthermore, a limiting step is provided in the base, and the shaft seat is locked on the limiting step by a locking piece.

[0011] Furthermore, the lifting assembly includes a lifting motor, a driving wheel, a connecting belt and a driven wheel. The lifting motor is arranged on the side of the base, the driving wheel is connected to the lifting motor and is driven to rotate by the lifting motor, the driven wheel is arranged at the lower end of the screw rod, and the connecting belt connects the driving wheel and the driven wheel.

[0012] Furthermore, the upper end of the lifting seat is a lifting platform.

[0013] Furthermore, the first slide rail is provided with a plurality of first connection holes for fasteners to pass through and be fixed on one side of the lifting seat; the second slide rail is provided with a plurality of second connection holes for fasteners to pass through and be fixed on the other side of the lifting seat.

[0014] Furthermore, the nut sleeve includes an insertion sleeve and a connecting plate, the insertion sleeve is arranged in the clearance groove, an internal thread is arranged in the insertion sleeve, the connecting plate is connected to the insertion sleeve, and a locking hole is arranged on the connecting plate.

[0015] After adopting the above structure, the guide rail lifting mechanism of the utility model has at least the following beneficial effects:

[0016] First, when in use, the lifting assembly drives the screw to rotate. Since the nut sleeve is threadedly connected to the screw, the nut sleeve is arranged on the lifting seat, and the rotating screw drives the lifting seat to rise or fall. When the lifting seat rises or falls, the first slide rail slides along the first slider, and the second slide rail slides along the second slider. Since the first slide rail is arranged on one side of the lifting seat and the second slide rail is arranged on the other side of the lifting seat, the first slide rail and the second slide rail are arranged relative to each other, so that the lifting seat is more stable during the lifting process. By setting the screw, and the lower end of the screw rod is located in the lower cavity and driven by the lifting assembly to rotate along the shaft seat, and the upper end of the screw rod is located in the upper cavity, the overall structure is relatively simple and the manufacturing cost is low.

[0017] Second, by providing the first mounting groove, the first slider can be provided in the first mounting groove during installation, so that the first slider is conveniently connected to the first slide rail. By providing the second mounting groove, the second slider can be provided in the second mounting groove during installation, so that the second slider is conveniently connected to the second slide rail.

[0018] Third, by setting the positioning ring and the locking nut, when installing the screw, after the screw passes through the flange, the positioning ring of the screw rests on the flange, and then the locking nut is fixed to the other end of the screw, thereby completing the connection of the screw and preventing the screw from detaching from the shaft seat.

[0019] Compared with the prior art, the utility model arranges a first slider on one cavity wall of the cavity, arranges a second slider on the other cavity wall of the cavity, arranges a first slide rail on one side of the lifting seat, and arranges a second slide rail on the other side of the lifting seat, so that the lifting seat is more stable during the lifting process, the overall structure is simple, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the guide rail lifting mechanism according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the guide rail lifting mechanism according to another angle of the embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional view of the lifting seat of the guide rail lifting mechanism according to the embodiment of the utility model after lifting;

[0023] Figure 4 It is a cross-sectional view of the lifting seat of the guide rail lifting mechanism according to the embodiment of the utility model after it is lowered;

[0024] Figure 5 It is a structural schematic diagram of a first sliding block according to an embodiment of the utility model;

[0025] Figure 6 It is a schematic structural diagram of a second sliding block according to an embodiment of the utility model.

[0026] Description of symbols

[0027] Base 1, cavity 11, upper cavity 111, lower cavity 112, first slider 12, first slider body 121, first upper slide plate 122, first lower slide plate 123, second slider 13, second slider body 131, second upper slide plate 132, second lower slide plate 133, first mounting groove 14, second mounting groove 15, shaft seat 2, boss 21, flange 22, locking nut 23, lifting assembly 3, lifting motor 31, driving wheel 32, connecting belt 33, driven wheel 34, screw rod 4, positioning ring 41, lifting seat 5, first slide rail 51, second slide rail 52, make way groove 53, nut sleeve 54, insertion sleeve 541, connecting plate 542, lifting platform 55. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figures 1 to 6 As shown,

[0030] The utility model discloses a guide rail lifting mechanism, comprising a base 1, an axle seat 2, a lifting assembly 3, a screw rod 4 and a lifting seat 5; a cavity 11 is formed in the base 1, a first slider 12 is arranged on one cavity wall of the cavity 11, and a second slider 13 is arranged on the other cavity wall of the cavity 11; the axle seat 2 is arranged in the base 1 and divides the cavity 11 into an upper cavity 111 and a lower cavity 112; the lifting assembly 3 is arranged on the base 1; the screw rod 4 is rotatably arranged on the axle seat 2, the lower end of the screw rod 4 is located in the lower cavity 112 and is driven by the lifting assembly 3 to rotate along the axle seat 2, and the upper end of the screw rod 4 is located in the upper cavity 111; a first slide rail 51 is arranged on one side of the lifting seat 5, and the first slide rail 51 can be lifted and lowered along the first slider 12, a second slide rail 52 is arranged on the other side of the lifting seat 5, and the second slide rail 52 can be lifted and lowered along the second slider 13, a clearance groove 53 for the screw rod 4 to pass through is arranged in the middle of the lifting seat 5, and a nut sleeve 54 threadedly connected to the screw rod 4 is arranged at the notch of the clearance groove 53.

[0031] In this way, the utility model relates to a guide rail lifting mechanism. When in use, the lifting assembly 3 drives the screw rod 4 to rotate. Since the nut sleeve 54 is threadedly connected to the screw rod 4, the nut sleeve 54 is arranged on the lifting seat 5. The rotating screw rod 4 drives the lifting seat 5 to rise or fall. When the lifting seat 5 rises or falls, the first slide rail 51 slides along the first slider 12, and the second slide rail 52 slides along the second slider 13. Since the first slide rail 51 is arranged on one side of the lifting seat 5 and the second slide rail 52 is arranged on the other side of the lifting seat 5, the first slide rail 51 and the second slide rail 52 are arranged relative to each other, so that the lifting seat 5 is more stable during the lifting process. By arranging the screw rod 4, and the lower end of the screw rod 4 is located in the lower cavity 112 and driven by the lifting assembly 3 to rotate along the shaft seat 2, and the upper end of the screw rod 4 is located in the upper cavity 111, the overall structure is relatively simple and the manufacturing cost is low.

[0032] Optionally, a first mounting groove 14 and a second mounting groove 15 are provided in the base 1, the first slider 12 is provided in the first mounting groove 14, and the second slider 13 is provided in the second mounting groove 15. By providing the first mounting groove 14, during installation, the first slider 12 can be provided in the first mounting groove 14, so that the first slider 12 is conveniently connected to the first slide rail 51. By providing the second mounting groove 15, during installation, the second slider 13 can be provided in the second mounting groove 15, so that the second slider 13 is conveniently connected to the second slide rail 52.

[0033] In a preferred embodiment of the utility model, the first slider 12 includes a first slider body 121, a first upper slider 122 and a first lower slider 123. The first upper slider 122 is locked at the upper end of the first slider body 121, and the first upper slider 122 is provided with a first upper slide groove that cooperates with the first slide rail 51. The first lower slider 123 is locked at the lower end of the first slider body 121, and the first lower slider 123 is provided with a first lower slide groove that cooperates with the first slide rail 51.

[0034] By detachably setting the first upper slide plate 122 and the first lower slide plate 123, the first upper slide plate 122 is provided with a first upper slide groove, the first lower slide plate 123 is provided with a first lower slide groove, and the middle part of the first slider body 121 does not need to be provided with a corresponding slide groove, thereby further reducing the cost.

[0035] Further, the second slider 13 includes a second slider body 131, a second upper slider 132 and a second lower slider 133. The second upper slider 132 is locked at the upper end of the second slider body 131, and the second upper slider 132 is provided with a second upper slide groove matched with the second slide rail 52. The second lower slider 133 is locked at the lower end of the second slider body 131, and the second lower slider 133 is provided with a second lower slide groove matched with the second slide rail 52. By detachably providing the second upper slider 132 and the second lower slider 133, the second upper slider 132 is provided with the second upper slide groove, and the second lower slider 133 is provided with the second lower slide groove, and the middle part of the second slider body 131 does not need to be provided with a corresponding slide groove, thereby further reducing the cost.

[0036] In some examples, a boss 21 is formed in the middle of the shaft seat 2, and a mounting hole is set in the boss 21; it also includes a flange 22 and a locking nut 23, the flange 22 is set in the mounting hole, and the screw rod 4 is connected to the locking nut 23 after passing through the flange 22; a positioning ring 41 is set on the screw rod 4 to abut against the flange 22. By setting the positioning ring 41 and the locking nut 23, when installing the screw rod 4, after the screw rod 4 passes through the flange 22, the positioning ring 41 of the screw rod 4 abuts against the flange 22, and then the locking nut 23 is fixed to the other end of the screw rod 4, thereby completing the connection of the screw rod 4 and preventing the screw rod 4 from being separated from the shaft seat 2. Among them, the locking nut 23 is preferably a threaded locking nut.

[0037] In some examples, a limiting step is set in the base 1, and the shaft seat 2 is locked on the limiting step by a locking piece. When installing the shaft seat 2, the shaft seat 2 is placed in the base 1 so that the shaft seat 2 rests on the limiting step, and then a locking piece such as a screw is used to pass through the shaft seat 2 and the limiting step, thereby fixing the shaft seat 2 on the base 1, thereby completing the connection between the shaft seat 2 and the base 1.

[0038] Furthermore, the lifting assembly 3 includes a lifting motor 31, a driving wheel 32, a connecting belt 33 and a driven wheel 34. The lifting motor 31 is arranged on the side of the base 1, the driving wheel 32 is connected to the lifting motor 31 and is driven to rotate by the lifting motor 31, the driven wheel 34 is arranged at the lower end of the screw rod 4, and the connecting belt 33 connects the driving wheel 32 and the driven wheel 34.

[0039] When the lifting seat 5 needs to be lifted, the lifting motor 31 drives the driving wheel 32 to rotate, the driving wheel 32 rotates to drive the driven wheel 34 to rotate through the connecting belt 33, the driven wheel 34 rotates to drive the screw rod 4 to rotate synchronously, the screw rod 4 rotates to drive the nut sleeve 54 to lift, the nut sleeve 54 lifts and lowers to realize the lifting of the lifting seat 5. Among them, the lifting motor 31 is preferably a servo motor to accurately control the rotation of the driving wheel 32, thereby accurately controlling the lifting height of the lifting seat 5.

[0040] The upper end of the lifting seat 5 in this example is a lifting platform 55. By providing the lifting platform 55, it is convenient to fix some processing devices on the lifting platform 55, so that the processing devices can be lifted and lowered for easy processing.

[0041] Furthermore, the first slide rail 51 is provided with a plurality of first connection holes for fasteners to pass through and be fixed on one side of the lifting seat 5; the second slide rail 52 is provided with a plurality of second connection holes for fasteners to pass through and be fixed on the other side of the lifting seat 5. By providing a plurality of first connection holes, the first slide rail 51 is firmly fixed on one side of the lifting seat 5, and by providing a plurality of second connection holes, the second slide rail 52 is firmly fixed on one side of the lifting seat 5.

[0042] In this example, the nut sleeve 54 includes an insertion sleeve 541 and a connecting plate 542. The insertion sleeve 541 is arranged in the clearance groove 53, and an internal thread is arranged in the insertion sleeve 541. The connecting plate 542 is connected to the insertion sleeve 541, and a locking hole is arranged on the connecting plate 542. When installing the nut sleeve 54, the insertion sleeve 541 of the nut sleeve 54 is inserted into the clearance groove 53, and then the connecting plate 542 is fixed to the bottom of the lifting seat 5 by screws passing through the locking holes, so that the nut sleeve 54 is firmly fixed on the lifting seat 5. By arranging an internal thread in the insertion sleeve 541, correspondingly, an external thread is arranged on the screw rod 4, so that when the screw rod 4 rotates, it is ensured that the lifting seat 5 can be driven to rise and fall.

[0043] Compared with the prior art, the utility model sets a first slider 12 on one wall of the cavity 11, sets a second slider 13 on the other wall of the cavity 11, sets a first slide rail 51 on one side of the lifting seat 5, and sets a second slide rail 52 on the other side of the lifting seat 5, so that the lifting seat 5 is more stable during the lifting process, the overall structure is simple, and the cost is low.

[0044] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A guide rail lifting mechanism, characterized in that: It includes a base, an axle seat, a lifting assembly, a screw rod and a lifting seat; a cavity is formed in the base, a first slider is arranged on one cavity wall of the cavity, and a second slider is arranged on the other cavity wall of the cavity; the axle seat is arranged in the base and divides the cavity into an upper cavity and a lower cavity; the lifting assembly is arranged on the base; the screw rod is rotatably arranged on the axle seat, the lower end of the screw rod is located in the lower cavity and is driven by the lifting assembly to rotate along the axle seat, and the upper end of the screw rod is located in the upper cavity; a first slide rail is arranged on one side of the lifting seat, and the first slide rail can be lifted and lowered along the first slider, a second slide rail is arranged on the other side of the lifting seat, and the second slide rail can be lifted and lowered along the second slider, a clearance groove for the screw rod to pass through is arranged in the middle of the lifting seat, and a nut sleeve threadedly connected to the screw rod is arranged at the notch of the clearance groove.

2. The guide rail lifting mechanism according to claim 1, characterized in that: A first mounting groove and a second mounting groove are arranged in the base, the first mounting groove is arranged in the first sliding block, and the second mounting groove is arranged in the second sliding block.

3. The guide rail lifting mechanism according to claim 2, characterized in that: The first slider includes a first slider body, a first upper slider and a first lower slider, the first upper slider is locked at the upper end of the first slider body, the first upper slider is provided with a first upper slide groove cooperating with the first slide rail, the first lower slider is locked at the lower end of the first slider body, and the first lower slider is provided with a first lower slide groove cooperating with the first slide rail.

4. The guide rail lifting mechanism according to claim 2, characterized in that: The second slider includes a second slider body, a second upper slider and a second lower slider, the second upper slider is locked at the upper end of the second slider body, the second upper slider is provided with a second upper slide groove that cooperates with the second slide rail, the second lower slider is locked at the lower end of the second slider body, and the second lower slider is provided with a second lower slide groove that cooperates with the second slide rail.

5. The guide rail lifting mechanism according to claim 1, characterized in that: A convex seat is formed in the middle of the shaft seat, and a mounting hole is arranged in the convex seat; it also includes a flange and a locking nut, the flange is arranged in the mounting hole, and the screw rod is connected with the locking nut after passing through the flange; a positioning ring is arranged on the screw rod and abuts against the flange.

6. The guide rail lifting mechanism according to claim 5, characterized in that: The locking nut is a thread-flank locking nut.

7. The guide rail lifting mechanism according to claim 1, characterized in that: A limiting step is arranged in the base, and the shaft seat is locked on the limiting step by a locking piece.

8. The guide rail lifting mechanism according to claim 1, characterized in that: The lifting assembly includes a lifting motor, a driving wheel, a connecting belt and a driven wheel. The lifting motor is arranged on the side of the base, the driving wheel is connected to the lifting motor and is driven to rotate by the lifting motor, the driven wheel is arranged at the lower end of the screw rod, and the connecting belt connects the driving wheel and the driven wheel.

9. The guide rail lifting mechanism according to claim 1, characterized in that: The first slide rail is provided with a plurality of first connection holes for fasteners to pass through and be fixed on one side of the lifting seat; the second slide rail is provided with a plurality of second connection holes for fasteners to pass through and be fixed on the other side of the lifting seat.

10. The guide rail lifting mechanism according to claim 1, characterized in that: The nut sleeve includes an insert sleeve and a connecting plate. The insert sleeve is arranged in the clearance groove. An internal thread is arranged in the insert sleeve. The connecting plate is connected to the insert sleeve. A locking hole is arranged on the connecting plate.

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