Switching device

Abstract

The present invention discloses a track transfer device, which includes: a base, on which a slide rail is formed; a movable rail, on which a slider that cooperates with the slide rail is formed; a screw drive assembly, which is arranged on the base and is used to drive the movable rail to reciprocate along the slide rail; and a movable connecting member, which can be movably arranged between the movable rail and the screw drive assembly to enable the movable rail and the screw drive assembly to slide or rotate relative to each other. According to the track transfer device of an embodiment of the present invention, by arranging a movable connecting member between the screw drive assembly and the movable rail, the movable rail and the screw drive assembly can be prevented from being stuck, and the production difficulty and assembly difficulty of the screw drive assembly can be reduced to a certain extent.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation, and in particular to a rail switching device. Background Art

[0002] With the development of the logistics industry, logistics carts and their transfer devices are also being gradually researched to provide faster logistics, thereby reducing the workload of logistics practitioners. However, the transfer device in the relevant technology relies on machining accuracy to ensure the reliability of the transmission, resulting in increased production costs. In addition, the transmission device also needs to be assembled more accurately in terms of assembly. Otherwise, it is easy to get stuck during the transmission process or cause the transmission structure such as the transmission screw to deform, which not only affects the service life of the product, but also reduces production efficiency and transportation efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a switching device that can reduce the difficulty of processing and installing a lead screw and prevent the lead screw from being stuck.

[0004] According to an embodiment of the present invention, the transfer device includes: a base, on which a slide rail is formed; a movable rail, on which a slider cooperating with the slide rail is formed; a screw drive assembly, which is arranged on the base and is used to drive the movable rail to reciprocate along the slide rail; and a movable connecting member, which is movably arranged between the movable rail and the screw drive assembly to enable the movable rail and the screw drive assembly to slide or rotate relative to each other.

[0005] According to the switching device of an embodiment of the present invention, a movable connecting piece is set between the screw drive assembly and the moving rail. When the relative position between the screw drive assembly and the moving rail changes, the movable connecting piece can offset the change in the relative position between the screw drive assembly and the moving rail in the left and right directions, thereby making it less likely for the moving rail and the screw drive assembly to be stuck. The structure is simple and the operation is convenient. At the same time, the production difficulty and assembly difficulty of the screw drive assembly can be reduced to a certain extent.

[0006] In addition, the track switching device according to the present invention may also have the following additional technical features:

[0007] In some embodiments of the present invention, the movable connecting member includes: a first mounting seat, which is connected to the screw drive assembly; a second mounting seat, which is connected to the movable track; and a guide rod, which is arranged between the first mounting seat and the second mounting seat, and the guide rod slides relative to the first mounting seat and / or the second mounting seat along the axial direction of the guide rod.

[0008] Optionally, a positioning hole is formed on the guide rod, and a positioning piece that cooperates with the positioning hole is formed on the first mounting seat or the second mounting seat.

[0009] Optionally, the second mounting seat includes a matching bearing, and the matching bearing is sleeved on the guide rod.

[0010] Optionally, the second mounting seat includes: a first inner shaft and a first outer shaft, the first inner shaft is sleeved on the guide rod, and the first inner shaft is suitable for rotating along an axial direction perpendicular to the guide rod.

[0011] Furthermore, a first arc surface and / or a second arc surface is formed on the inner wall of the first outer shaft, and the first inner shaft rotates along the first arc surface or along the second arc surface.

[0012] In some embodiments of the present invention, the screw drive assembly includes: a driving motor, a driving wheel, a driven wheel, a transmission belt, a screw and a nut, the transmission belt is respectively mounted on the driving wheel and the driven wheel, the driven wheel is mounted on the screw, and the nut is connected to the movable track.

[0013] In some embodiments of the present invention, the transfer device also includes: a slide rail assembly, which is arranged between the movable rail and the base, and the slide rail assembly includes: a profile frame, which is arranged on the base, and the slide rail is arranged on the profile frame; a first connecting plate, which is fixedly connected to the movable pallet, and the slider is provided on the first connecting plate, and the movable connecting member is provided between the first connecting plate and the screw drive assembly.

[0014] Furthermore, the transfer device also includes: a floating component, which is arranged on the base, and in a direction perpendicular to the slide rail, one end of the movable rail is cooperatively connected to the slide rail component, and the other end of the movable rail is movably connected to the floating component.

[0015] Optionally, the floating assembly includes: a floating block, which is connected to the movable track; and a floating groove, which is provided on the base, and the floating block is movably provided in the floating groove.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 2 is a schematic structural diagram of a track switching device according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Sectional view along line AA.

[0020] Figure 3 2 is a schematic structural diagram of a lead screw drive assembly of a track switching device according to an embodiment of the present invention.

[0021] Figure 4 yes Figure 3 Cross-sectional view along line BB.

[0022] Figure 5 4 is a cross-sectional view of a bearing seat of a track switching device according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] Track switching device 100,

[0025] Base 1,

[0026] Moving track 2,

[0027] Screw drive assembly 3, screw 31, nut 32,

[0028] Driving motor 33, driving wheel 34, driven wheel 35, transmission belt 36,

[0029] Bearing seat 4, second inner shaft 41, second outer shaft 42, third arc surface 421,

[0030] Floating assembly 5, profile frame 51, floating groove 511, floating block 52, second connecting plate 53, first mounting block 54, second mounting block 55,

[0031] Slide rail assembly 6, first connecting plate 61, slider 611, slide rail 621,

[0032] The movable connecting member 7, the first mounting seat 71, the second mounting seat 72, the first inner shaft 721, the first outer shaft 722, the first arc surface 723, the guide rod 73,

[0033] Drag chain 8, fixed track 9. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. 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 only to explain the present invention and are not to be construed as limiting the present invention.

[0035] Reference below Figure 1-Figure 5 A track switching device 100 according to an embodiment of the present invention is described.

[0036] like Figure 1 、 Figure 2 and Figure 3 As shown, the track switching device 100 according to an embodiment of the present invention includes a base 1, a movable track 2, a screw drive assembly 3 and a movable connecting member 7.

[0037] Specifically, a slide rail 62 is formed on the base 1, and a slider 611 is formed on the movable track 2 to cooperate with the slide rail 62. Thus, the movable track 2 can be moved along the base 1 by the cooperation of the slide rail 62 and the slider 611. Figure 1 The movable track 2 can move from front to back or from back to front, so that the movable track 2 can be matched with different fixed tracks 9 in the front to back direction, so that the logistics trolley can move from the movable track 2 to different fixed tracks 9, and also can move from different fixed tracks 9 to the movable track 2.

[0038] Specific as Figure 1 As shown, the logistics trolley can move from the fixed track 9 on the front side to the mobile track 2, and then the mobile track 2 moves from front to back so that the mobile track 2 corresponds to the fixed track 9 on the rear side. At this time, the logistics trolley can move from the mobile track 2 to the fixed track 9 on the rear side.

[0039] The screw drive assembly 3 is arranged on the base 1, and the screw drive assembly 3 is used to drive the movable rail 2 to reciprocate along the slide rail 62. It can be understood here that the screw drive assembly 3 can be used to drive the movable rail 2 to reciprocate along the slide rail 62, or other drive components, such as a telescopic cylinder assembly, a gear rack assembly, etc., which are not limited here.

[0040] Furthermore, the movable connection member 7 can be movably provided between the movable track 2 and the lead screw drive assembly 3 so that the movable track 2 and the lead screw drive assembly 3 can slide or rotate relative to each other. It can be understood here that in the process of movement of the mobile track 2 and alignment of the mobile track 2 with the fixed track 9, the mobile track 2 needs to move in a relatively straight direction. Specifically, if the alignment effect of the vehicle track on the mobile track 2 and the vehicle track on the fixed track 9 is not good, the trolley cannot move from the vehicle track of the mobile track 2 to the vehicle track of the fixed track 9. Therefore, it is necessary to make the screw drive assembly 3 have a higher driving accuracy, which greatly increases the production difficulty and installation difficulty of the screw drive assembly 3. Moreover, after the screw drive assembly 3 is assembled, due to the gravity of the logistics trolley itself and the weight of the objects carried by the logistics trolley, it is also easy for the connection position between the screw drive assembly 3 and the mobile track 2 to loosen, thereby causing the screw drive assembly 3 or the mobile track 2 to get stuck. Therefore, in this application, a movable connecting member 7 is set between the mobile track 2 and the screw drive assembly 3 so that the mobile track 2 and the screw drive assembly 3 can move relative to each other.

[0041] Specific as Figure 1 and Figure 2 As shown, when the relative position between the screw drive assembly 3 and the movable rail 2 in the left-right direction changes, the movable trajectory of the movable rail 2 will change during the process of the screw drive assembly 3 driving the movable rail 2 to move in the front-back direction. At this time, the movable rail 2 is limited by the cooperation between the slide rail 62 and the slider 611, which can easily cause the movable rail 2 and the screw drive assembly 3 to be stuck. At this time, since the movable connecting member 7 is engaged between the screw drive assembly 3 and the movable rail 2, the change in the relative position between the screw drive assembly 3 and the movable rail 2 in the left-right direction can be offset by the movable connecting member 7, so that the relative position between the movable rail 2 and the slide rail 62, and the relative position between the movable rail 2 and the fixed rail 9 in the left-right direction are not easy to change, thereby solving the problem of the movable rail 2 and the screw drive assembly 3 being stuck, and at the same time, it can also reduce the production difficulty and assembly difficulty of the screw drive assembly 3 to a certain extent.

[0042] In addition, in one example, relative sliding can occur between the movable track 2 and the lead screw drive assembly 3. In another example, relative rotation can occur between the movable track 2 and the lead screw drive assembly 3. In still another example, both relative sliding and relative rotation can occur between the movable track 2 and the lead screw drive assembly 3. This is not limited here and can be set according to actual needs.

[0043] Therefore, according to the switching device 100 of the embodiment of the present invention, by setting a movable connecting member 7 between the screw drive assembly 3 and the moving rail 2, when the relative position between the screw drive assembly 3 and the moving rail 2 changes, the movable connecting member 7 can offset the change in the relative position between the screw drive assembly 3 and the moving rail 2 in the left and right directions, thereby making it less likely for the moving rail 2 and the screw drive assembly 3 to be stuck. The structure is simple and the operation is convenient. At the same time, the production difficulty and assembly difficulty of the screw drive assembly 3 can be reduced to a certain extent.

[0044] In some embodiments of the present invention, Figure 4 As shown, the movable connecting member 7 includes a first mounting seat 71, a second mounting seat 72 and a guide rod 73. The first mounting seat 71 is connected to the screw drive assembly 3, the second mounting seat 72 is connected to the movable track 2, and the guide rod 73 is arranged between the first mounting seat 71 and the second mounting seat 72. The guide rod 73 slides relative to the first mounting seat 71 and / or the second mounting seat 72 along the axial direction of the guide rod 73.

[0045] For example Figure 1 、 Figure 4 As shown, the screw drive assembly 3 includes a screw 31 and a nut 32. The screw 31 is provided on the base 1, and the nut 32 is connected to the movable track 2 via a movable connecting member 7. Thus, when the driving device drives the screw 31 to rotate, the nut 32 can reciprocate along the axis of the screw 31, thereby causing the movable track 2 connected to the nut 32 to reciprocate along the axis of the screw 31. The structure is simple and easy to operate. Furthermore, the first mounting seat 71 of the movable connecting member 7 can be mounted on the nut 32, and the second mounting seat 72 can be mounted on the movable track 2. A first mating hole is formed on the first mounting seat 71, and a second mating hole is formed on the second mounting seat 72. The two ends of the guide rod 73 are respectively mounted in the first mating hole and the second mating hole. In addition, in one example, the guide rod 73 and the first mounting seat 71 can slide relative to each other, that is, the guide rod 73 can slide along the first matching hole. In another example, the guide rod 73 and the second mounting seat 72 can slide relative to each other, that is, the guide rod 73 can slide along the second matching hole. In other examples, the two ends of the guide rod 73 can slide relative to the first mounting seat 71 and the second mounting seat 72 respectively. Thus, the guide rod 73 can slide relative to each other along the first matching hole and the second matching hole.

[0046] Therefore, according to the above, when the relative position between the screw drive assembly 3 and the movable track 2 changes, relative sliding can occur between the guide rod 73 and the first mounting seat 71, or between the guide rod 73 and the second mounting seat 72, so that the screw drive assembly 3 or the movable track 2 is not easily stuck.

[0047] In such Figure 4In the specific example shown, the guide rod 73 is formed as a T-shaped guide rod 73, which can pass through the second matching hole on the second mounting seat 72 and extend into the first matching hole of the first mounting seat 71. At this time, the step surface of the T-shaped guide rod 73 is matched on the side of the second mounting seat 72 away from the first mounting seat 71. After the T-shaped guide rod 73 connects the first mounting seat 71 and the second mounting seat 72, the first mounting seat 71 and the second mounting seat 72 are spaced apart so that space is reserved for relative movement between the first mounting seat 71 and the second mounting seat 72.

[0048] Furthermore, the extending direction of the guide rod 73 and the extending direction of the slide rail 62 are perpendicular to each other.

[0049] Furthermore, a positioning hole is formed on the guide rod 73, and a positioning piece that matches the positioning hole is formed on the first mounting seat 71 or the second mounting seat 72. Figure 3 and Figure 4 As shown, a mounting hole is formed on the second mounting seat 72, and a positioning member can be installed in the mounting hole. After the guide rod 73 is inserted into the second mounting seat 72, the positioning member can be screwed to extend from the mounting hole. At this time, the positioning hole on the guide rod 73 can be opposite to the mounting hole. As a result, the positioning member extending from the mounting hole can be inserted into the positioning hole to limit the positioning position of the guide rod 73. Optionally, a plurality of positioning holes can be provided, and the plurality of positioning holes can be evenly spaced along the axis direction of the guide rod 73. Thus, the relative position between the guide rod 73 and the second mounting seat 72 can be set according to actual needs.

[0050] In some embodiments of the present invention, the guide rod 73 and the second mounting seat 72 can rotate relative to each other, and further, the guide rod 73 and the first mounting seat 71 can also rotate relative to each other. Therefore, when the two ends of the screw 31 are misaligned, for example, the two ends of the screw 31 are at different heights during installation, at this time, the screw 31 tilts in the up and down directions, making the screw drive assembly 3 or the movable rail 2 easily stuck, the guide rod 73 can be rotated relative to the second mounting seat 72, or the guide rod 73 can be rotated relative to the first mounting seat 71, so that the screw drive assembly 3 is not easily stuck when driving the movable guide rail to move.

[0051] Specifically, the second mounting seat 72 includes a first inner shaft 721 and a first outer shaft 722. The first inner shaft 721 is sleeved on the guide rod 73, and the first inner shaft 721 is suitable for rotating along an axial direction perpendicular to the guide rod 73. Here, it should be noted that, in order to better describe the rotation direction of the screw 31 or the first inner shaft 721, the direction of the screw 31 around the axis of the screw 31 is used as the first rotation direction, and the direction of the screw 31 around the axis perpendicular to the axis is used as the second rotation direction. Furthermore, in order to better describe the second rotation direction of the screw 31 of the present application, in one example, the screw 31 takes the movable connecting member 7 as the center of the circle and the screw 31 as the radius or diameter, which can be as follows: Figure 1 The first inner shaft 721 and the first outer shaft 722 swing in the left and right directions as shown, so that when the lead screw 31 tilts, the lead screw drive assembly 3 can be prevented from being stuck by the relative rotation between the first inner shaft 721 and the first outer shaft 722.

[0052] In some embodiments of the present invention, in the second rotation direction, the inner wall of the first outer shaft 722 is formed with a first curved surface 723 and / or a second curved surface, and the first inner shaft 721 rotates along the first curved surface 723 or the first inner shaft 721 rotates along the second curved surface. In one example, the inner wall of the first outer shaft 722 is formed with a first curved surface 723, and the first inner shaft 721 can slide along the first curved surface 723, so that the first inner shaft 721 rotates relative to the first outer shaft 722 in the second rotation direction; in another example, the inner wall of the first outer shaft 722 is formed with a second curved surface, and the first inner shaft 721 can slide along the second curved surface, so that the first inner shaft 721 rotates relative to the first outer shaft 722 in the second direction; in another example, the inner wall of the first outer shaft 722 is formed with a second curved surface There is a first curved surface 723 and a second curved surface, wherein the first curved surface 723 and the second curved surface are symmetrically arranged on the inner wall of the first outer shaft 722, and the symmetry plane is the plane where the midline of the thickness direction of the first outer shaft 722 is located. Therefore, when the first inner shaft 721 slides along the first curved surface 723, the first inner shaft 721 can rotate relative to the first outer shaft 722 in the second rotation direction. When the first inner shaft 721 slides along the second curved surface, the first inner shaft 721 can rotate relative to the first outer shaft 722 in a direction opposite to the second rotation direction.

[0053] In a specific example, the inner wall of the first outer shaft 722 is formed with a first arc surface 723 and a second arc surface, so that when the screw 31 takes the second mounting seat 72 as the center, the screw 31 can swing back and forth in the left and right directions, and can also swing back and forth in the up and down directions, thereby allowing the screw 31 and the movable rail 2 to have a higher degree of rotational freedom, thereby better preventing the screw drive assembly 3 from being stuck in the process of driving the movable rail 2 to move.

[0054] In some embodiments of the present invention, the inner wall of the first outer shaft 722 is formed with a first arc surface 723 and a second arc surface, and the first arc surface 723 and the second arc surface are symmetrically arranged on the inner wall of the first outer shaft 722. The outer wall of the first inner shaft 721 is a plane, that is, as shown in the figure, the first inner shaft 721 can slide better along the first arc surface 723 or the first inner shaft 721 can slide better along the second arc surface.

[0055] Optionally, the outer wall of the first inner shaft 721 may also be formed as an arc surface, so that the first inner shaft 721 can slide better along the first arc surface 723, or the first inner shaft 721 can slide along the second arc surface.

[0056] In other examples, the inner wall surface of the first outer shaft 722 may also be a mating surface of other shapes, which is not limited here.

[0057] In some embodiments of the present invention, the second mounting seat 72 includes a matching bearing, which is sleeved on the guide rod 73. Therefore, through the cooperation between the guide rod 73 and the matching bearing, the guide rod 73 can rotate around the axis of the guide rod 73. More specifically, a matching bearing is provided between the guide rod 73 and the first inner shaft 721. As a result, the first mounting seat 71 and the second mounting seat 72 can have relative freedom of movement in the left and right directions, and can also have rotational freedom around the axis of the guide rod 73. The first mounting seat 71 and the second mounting seat 72 also have rotational freedom around a line perpendicular to the axis of the guide rod 73. This makes the first mounting seat 71 and the second mounting seat 72 more flexible, and further makes the screw 31 and the movable track 2 more flexible, which can effectively prevent the screw drive assembly 3 from getting stuck when driving the movable track 2 to move.

[0058] In some embodiments of the present invention, Figure 2 As shown, the transfer device 100 also includes a slide rail assembly 6, which is arranged between the movable rail 2 and the base 1. The slide rail assembly 6 includes a profile frame 51, the profile frame 51 is arranged on the base 1, the slide rail 62 is arranged on the profile frame 51, the first connecting plate 61 is fixedly connected to the movable rail 2, the first connecting plate 61 is provided with a slider 611, and the movable connecting member 7 is arranged between the first connecting plate 61 and the screw drive assembly 3.

[0059] For example Figure 2 As shown, a profile frame 51 is provided on the base 1, a mounting groove is formed on the right side of the profile frame 51, a slide rail 62 is installed in the mounting groove, the first connecting plate 61 is formed in an L shape, the first connecting plate 61 is installed at the lower end of the movable track 2, and a slider 611 is installed on the left side of the first connecting plate 61. The slide rail 62 and the slider 611 cooperate to limit the movable position of the movable track 2.

[0060] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the screw 31 extends in the front-to-back direction. By arranging a bearing seat 4 between the screw 31 and the base 1, the screw 31 can be rotated around the axis of the screw 31 relative to the bearing seat 4. Moreover, in the process of the screw 31 rotating around the axis of the screw 31, the screw 31 can also be rotated relative to the bearing seat 4 around a direction perpendicular to the straight line where the axis of the screw 31 is located. Specifically, the screw 31 can be rotated around the straight line where the left and right directions are located, or the screw 31 can be rotated around the straight line where the up and down directions are located. Here, it should be noted that the up and down directions are perpendicular to the left and right directions, and also perpendicular to the front and back directions. Here, up and down, left and right, and front and back are only for the convenience of describing the position, and are not limitations on this application.

[0061] Please refer to the following Figure 5 Specifically describe the structure of the bearing seat 4:

[0062] The bearing seat 4 includes a second inner shaft 41 and a second outer shaft 42. The second outer shaft 42 is sleeved on the second inner shaft 41, and the second inner shaft 41 is sleeved on the screw 31. The second outer shaft 42 is fixedly connected to the base 1. The screw 31 rotates relative to the second inner shaft 41 or the second outer shaft 42 around the axis of the screw 31 in a first rotation direction. The second inner shaft 41 rotates relative to the second outer shaft 42 around a straight line perpendicular to the axis of the screw 31 in a second rotation direction. In an example, the screw 31 takes the bearing seat 4 as the center and the screw 31 as the radius. Figure 1 The screw 31 is swung in the left and right directions as shown. Therefore, when the two ends of the screw 31 are not on the same axis, the bearing seats 4 at both ends can be adjusted to allow the screw 31 to rotate better, thereby reducing the coaxiality requirements of the two ends of the screw 31 and the processing accuracy of the two ends of the screw 31, thereby reducing the production difficulty and reducing the production cost.

[0063] In addition, it can also be understood that since both ends of the screw 31 can be adjusted to a certain extent, both ends of the screw 31 can have a high degree of freedom, which can eliminate the impact of processing errors and installation errors, thereby reducing assembly difficulty and improving assembly efficiency.

[0064] Therefore, according to the transfer device 100 of the embodiment of the present invention, by respectively arranging bearing seats 4 at both ends of the lead screw 31, the two ends of the lead screw 31 can have a higher degree of freedom, the requirements for the coaxiality of the two ends of the lead screw 31 can be reduced, and the processing accuracy of the two ends of the lead screw 31 can be reduced, thereby reducing the production difficulty and reducing the production cost, and can also eliminate the influence caused by processing errors and installation errors, thereby reducing the assembly difficulty and improving the assembly efficiency. At the same time, during the transmission process of the lead screw 31, since the two ends of the lead screw 31 have a higher degree of freedom, the lead screw 31 is not easily stuck and the transmission effect is good.

[0065] The second inner shaft 41 can rotate around the axis of the screw 31 relative to the second outer shaft 42, so that the screw 31 can rotate around the axis of the screw 31 in a first rotation direction. In other embodiments of the present invention, there can be a ball bearing between the second inner shaft 41 and the screw 31, thereby allowing the screw 31 to rotate around the axis of the screw 31 in a first rotation direction relative to the inner shaft.

[0066] In some embodiments of the present invention, Figure 5 As shown, in the second rotation direction, the inner wall of the second outer shaft 42 is formed with a third arc surface 421 and / or a fourth arc surface, and the second inner shaft 41 rotates along the third arc surface 421 or the second inner shaft 41 rotates along the fourth arc surface. In one example, a third curved surface 421 is formed on the inner wall of the second outer shaft 42, and the second inner shaft 41 can slide along the third curved surface 421, so that the second inner shaft 41 rotates relative to the second outer shaft 42 in the second rotation direction; in another example, a fourth curved surface is formed on the inner wall of the second outer shaft 42, and the second inner shaft 41 can slide along the fourth curved surface, so that the second inner shaft 41 rotates relative to the second outer shaft 42 in the second direction; in another example, a third curved surface 421 and a fourth curved surface are formed on the inner wall of the second outer shaft 42, wherein the third curved surface 421 and the fourth curved surface are symmetrically arranged on the inner wall of the second outer shaft 42, and the symmetry plane is the plane where the midline of the thickness direction of the second outer shaft 42 is located. Therefore, when the second inner shaft 41 slides along the third curved surface 421, the second inner shaft 41 can rotate relative to the second outer shaft 42 in the second rotation direction, and when the second inner shaft 41 slides along the fourth curved surface, the second inner shaft 41 can rotate relative to the second outer shaft 42 in the direction opposite to the second rotation direction.

[0067] In a specific example, the inner wall of the second outer shaft 42 is formed with a third arc surface 421 and a fourth arc surface. Thus, when the screw 31 is centered on the left bearing seat 4, the screw 31 can swing back and forth in the left and right directions, and can also swing back and forth in the up and down directions. This allows the left end of the screw 31 to have a higher degree of rotational freedom. Similarly, the right end of the screw 31 can also have a higher degree of rotational freedom, which can better reduce the coaxiality requirements of the two ends of the screw 31, thereby reducing the production difficulty and assembly difficulty.

[0068] In some embodiments of the present invention, the inner wall of the second outer shaft 42 is formed with a third arc surface 421 and a fourth arc surface, and the third arc surface 421 and the fourth arc surface are symmetrically arranged on the inner wall of the second outer shaft 42. The outer wall of the second inner shaft 41 is a plane, that is, as shown in the figure, the second inner shaft 41 can slide better along the third arc surface 421 or the second inner shaft 41 can slide better along the fourth arc surface.

[0069] Optionally, the outer wall of the second inner shaft 41 may also be formed as an arc surface, so that the second inner shaft 41 can slide better along the third arc surface 421, or the second inner shaft 41 can slide along the fourth arc surface.

[0070] In other examples, the inner wall surface of the second outer shaft 42 may also be a mating surface of other shapes, which is not limited here.

[0071] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the switching device 100 also includes a floating assembly 5, which is arranged between the movable rail 2 and the base 1. By providing the floating assembly 5, the relative position between the movable rail 2 and the base 1 can be limited to a certain extent, so that the movable rail 2 can be better moved under the transmission action of the screw drive assembly 3. Specifically, the floating assembly 5 includes a profile frame 51 and a floating block 52. The profile frame 51 is fixedly connected to the base 1. The profile frame 51 is formed with a floating groove 511 extending along the axis of the screw 31. The floating block 52 is connected to the movable rail 2 and cooperates with the floating groove 511. Therefore, when the movable rail 2 moves along the screw 31, the cooperation between the floating block 52 and the floating groove 511 can better limit the position of the movable rail 2.

[0072] Furthermore, the floating block 52 can move relative to the floating slot 511 in a direction perpendicular to the axis of the screw 31. The direction perpendicular to the axis of the screw 31 here can be the left and right direction or the up and down direction. Here, in a specific example, the floating block 52 and the floating slot 511 are clearance-fitted, that is, in the left and right direction, there is an assembly gap between the floating block 52 and the floating slot 511, and in the up and down direction, there is an assembly gap between the floating block 52 and the floating slot 511.

[0073] In another example, there is an assembly gap between the floating block 52 and the floating groove 511 in the left-right direction, allowing the floating block 52 and the floating groove 511 to move relative to each other in the left-right direction. As a result, when the lead screw 31 swings in the left-right direction, the movable track 2 can be caused to rock in the left-right direction. The cooperation between the floating block 52 and the floating groove 511 ensures that even if the movable track 2 rocks in the left-right direction, it will not become stuck during the reciprocating movement in the front-to-back direction, thus improving flexibility. Furthermore, the outer wall of the floating block 52 and the inner wall of the floating groove 511 can each be formed with a matching curved surface, thereby enabling the floating block and the floating groove 511 to rotate relative to each other.

[0074] In some embodiments of the present invention, Figure 2 As shown, the floating assembly 5 also includes a second connecting plate 53, a first mounting block 54 and a second mounting block 55. The second connecting plate 53 is fixedly connected to the movable track 2, the first mounting block 54 is fixed on the second connecting plate 53, and the second mounting block 55 is connected to the first mounting block 54 to limit the floating block 52 between the first mounting block 54 and the second mounting block 55.

[0075] In such Figure 1 and Figure 2 In the example shown, the second connecting plate 53 is installed at the lower end of the movable rail 2. The second connecting plate 53 is assembled by screws. The first mounting block 54 is fixed to the second connecting plate 53 by screws. Corresponding bolt holes are formed on the first mounting block 54, the floating block 52 and the second mounting block 55 respectively. The bolts can pass through the bolt holes on the first mounting block 54, the floating block 52 and the second mounting block 55 in turn to fix the floating block 52 and the second mounting block 55 to the first mounting block 54. The structure is simple and the assembly is convenient. It can also prevent the floating block 52 from being damaged by the bolts when the floating block 52 is assembled.

[0076] In another example, the floating block 52 can be movably provided between the first mounting block 54 and the second mounting block 55. For example, as shown in the figure, one end of the floating block 52 can be movably provided in the floating groove 511, and the other end of the floating block 52 can be movably provided between the first mounting block 54 and the second mounting block 55. Thus, the movable space of the floating block 52 can be further increased, and the possibility of the movable track 2 being stuck can be further reduced.

[0077] In some embodiments of the present invention, the floating assembly 5 is disposed on at least one side of the movable rail 2 in a direction perpendicular to the linear direction of the lead screw 31. It should be noted that the direction perpendicular to the linear direction of the lead screw 31 is the left-right direction in the figure. Therefore, the floating assembly 5 can be disposed below the left end of the movable rail 2, below the right end of the movable rail 2, or below both the left end and the right end of the movable rail 2. The arrangement can be determined based on actual conditions and is not limited here.

[0078] In some embodiments of the present invention, Figure 1 and Figure 2 The floating assembly 5 shown is arranged on one side of the moving rail 2 perpendicular to the straight line direction of the axis of the lead screw 31, and the slide rail assembly 6 is arranged on the other side of the moving rail 2 perpendicular to the straight line direction of the axis of the lead screw 31. That is to say, in one example, the slide rail assembly 6 can be arranged below the left end of the moving rail 2, and the floating assembly 5 is arranged below the right end of the moving rail 2. In another example, the slide rail assembly 6 can be arranged below the right end of the moving rail 2, and the floating assembly 5 is arranged below the left end of the moving rail 2. It can be understood that by providing the slide rail assembly 6, one end of the moving rail 2 can be better positioned, so that the moving rail 2 can be relatively stable and not easy to deviate when reciprocating in the front and rear directions, thereby preventing the moving rail 2 from colliding with the fixed rail 9 during the movement, and avoiding damage to the moving rail 2.

[0079] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the track switching device 100 further includes a drag chain 8, one end of which is fixedly connected to the base 1, and the other end of which is fixedly connected to the moving track 2. Therefore, by arranging the drag chain 8 between the base 1 and the moving track 2, the position of the moving track 2 can be better limited. Figure 2 As shown, the left end of the movable rail 2 is positioned by the slide rail assembly 6, and the right end of the movable rail 2 is cooperated with the floating assembly 5 to prevent the movable rail 2 from being stuck during the movement. At the same time, a drag chain 8 is set on the side of the movable rail 2 adjacent to the floating assembly 5 to limit the relative position between the base 1 and the movable rail 2, so that the movable rail 2 can better reciprocate along the front and rear directions.

[0080] The structure and working process of a track switching device 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0081] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the transfer device 100 includes a base 1, and two profile frames 51 are respectively provided in the left and right directions of the base 1, wherein the profile frame 51 located on the left is provided with multiple installation grooves in the upper and lower directions, and each installation groove can be equipped with a slide rail 62, thereby, the height of the slide rail 62 can be adjusted according to actual needs, and the profile frame 51 located on the right is provided with multiple floating grooves 511 in the upper and lower directions. In this example, the number of the installation grooves and the floating grooves 511 is the same, and the positions correspond to each other, thereby, the height of the left and right ends of the movable track 2 can be better adjusted.

[0082] Furthermore, the profile frame 51 located on the right side can be matched with the movable rail 2 through the second connecting plate 53, wherein a mounting hole is formed on the second connecting plate 53, and bolts can be matched with the mounting holes to assemble the first mounting block 54 on the second connecting plate 53, and corresponding bolt holes are formed on the first mounting block 54 and the second mounting block 55. Thus, the floating block 52 can be installed between the first mounting block 54 and the second mounting block 55 through the matching of the bolt holes with the first mounting block 54 and the second mounting block 55. Thus, the floating block 52 can be fixed between the first mounting block 54 and the second mounting block 55, which can facilitate the assembly and disassembly of the floating block 52, and also can assemble floating blocks 52 of different sizes, which is highly practical.

[0083] Furthermore, the floating block 52 can extend into the floating groove 511 to fit with the clearance of the floating groove 511. In this way, the floating block 52 can slide in the up and down directions or left and right directions relative to the floating groove 511, thereby adjusting the relative position between the left end of the movable rail 2 and the profile frame 51, thereby preventing the movable rail 2 from being stuck during the reciprocating movement in the front and rear directions.

[0084] Furthermore, a slide rail assembly 6 is provided at the left end of the movable rail 2. Specifically, the slide rail assembly 6 includes a first connecting plate 61 and a profile frame 51. The first connecting plate 61 is fixedly connected to the movable rail 2. A slider 611 is formed on the first connecting plate 61. A slide rail 62 cooperating with the slider 611 is formed on the profile frame 51. The slide rail 62 extends along the axial direction of the screw 31. Therefore, through the cooperation of the slide rail 62 and the slider 611, the first connecting plate 61 and the profile frame 51 can be better limited.

[0085] Regarding the drive portion of the present application, the track-switching device 100 includes a screw drive assembly 3, which also includes a drive motor 33, a driving pulley 34, a driven pulley 35, and a transmission belt 36. The screw drive assembly 3 includes a screw 31 and a nut 32. Specifically, the drive motor 33 can drive the driving pulley 34, which drives the driven pulley 35 to rotate via the transmission belt 36. The driven pulley 35 is mounted on the screw 31, thereby driving the screw 31 to rotate. During the rotation of the screw 31, the nut 32 can reciprocate in the front-to-back direction.

[0086] The slide rail assembly 6 also includes a movable connecting member 7, which is arranged between the upper first connecting plate 61 and the nut 32. The movable connecting member 7 includes a first mounting seat 71, a second mounting seat 72 and a guide rod 73. The nut 32 is fixedly connected to the first mounting seat 71, and the second mounting seat 72 is fixedly connected to the first connecting plate 61. One end of the guide rod 73 cooperates with the first mounting seat 71, and the other end of the guide rod 73 is rotatably arranged in the second mounting seat 72. When the screw 31 is tilted in the assembly position in the up-down direction, the nut 32 cooperating with the screw 31 also tilts in the up-down direction. At this time, since the guide rod 73 cooperates with the first mounting seat 71, the first mounting seat 71 can be fixedly matched with the guide rod 73. Thus, through the relative rotation between the guide rod 73 and the second mounting seat 72, the movable rail 2 is not easily stuck when the movable rail 2 reciprocates in the front-rear direction. The first mounting seat 71 can rotate relative to the guide rod 73. Thus, only the relative rotation between the first mounting seat 71 and the guide rod 73 can meet the problem that the movable rail 2 is not easily stuck when the screw 31 is tilted.

[0087] Furthermore, the front and rear ends of the screw 31 can be respectively assembled on the base 1 through the bearing seat 4. The bearing seat 4 includes a second inner shaft 41 and a second outer shaft 42. The second outer shaft 42 is sleeved on the second inner shaft 41, and the second inner shaft 41 is sleeved on the screw 31. The second outer shaft 42 is fixedly connected to the base 1. The screw 31 rotates relative to the second inner shaft 41 or the second outer shaft 42 around the axis of the screw 31 in a first rotation direction, and the second inner shaft 41 rotates relative to the second outer shaft 42 around a straight line perpendicular to the axis of the screw 31 in a second rotation direction. Here, it should be noted that in order to better describe the rotation direction of the screw 31, the direction of the screw 31 around the axis of the screw 31 is taken as the first rotation direction, and the direction of the screw 31 around the axis perpendicular to the axis is taken as the second rotation direction. Further, in order to better describe the second rotation direction of the screw 31 of the present application, in one example, the screw 31 takes the bearing seat 4 as the center and the screw 31 as the radius. Figure 1The screw 31 is swung in the left and right directions as shown. Therefore, when the two ends of the screw 31 are not on the same axis, the bearing seats 4 at both ends can be adjusted to allow the screw 31 to rotate better, thereby reducing the coaxiality requirements of the two ends of the screw 31 and the processing accuracy of the two ends of the screw 31, thereby reducing the production difficulty and reducing the production cost.

[0088] The track switching device 100 also includes a drag chain 8, one end of which is fixedly connected to the base 1, and the other end of the drag chain 8 is fixedly connected to the movable track 2. Therefore, by arranging the drag chain 8 between the base 1 and the movable track 2, the position of the movable track 2 can be better limited. As shown in the figure, the left end of the movable track 2 is positioned by the slide rail assembly 6, and the right end of the movable track 2 is matched by the floating assembly 5 to prevent the movable track 2 from being stuck during the movement. At the same time, the drag chain 8 is arranged on the side of the movable track 2 adjacent to the floating assembly 5 to limit the relative position between the base 1 and the movable track 2, so that the movable track 2 can better reciprocate along the front and back directions.

[0089] The working process of the track switching device 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0090] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the driving motor 33 drives the active wheel 34 to rotate, and under the transmission action of the transmission belt 36, the driven wheel 35 can rotate, and the driven wheel 35 can drive the screw 31 to rotate. When the screw 31 tilts during assembly or use, it can be adjusted through the bearing seats 4 at both ends of the screw 31 so that the screw 31 meets the transmission requirements, which can prevent the screw 31 from being stuck and the screw 31 from being damaged. Furthermore, when the driving motor 33 drives the lead screw 31 to rotate, the movable track 2 can move in the front-to-back direction, for example, the movable track 2 moves from front to back, or the movable track 2 moves from back to front. At this time, since the second connecting plate 53 and the profile frame 51 can move relative to each other, and the first connecting plate 61 and the nut 32 can move relative to each other, the lower ends of the left and right sides of the movable track 2 can be adjusted to their relative positions more flexibly, so that the movable track 2 is not easily stuck during the reciprocating movement in the front-to-back direction through the movable connecting member 7. In addition, during the movement of the movable track 2 in the front-to-back direction, due to the floating component 5 set between the movable track 2 and the base 1, one side of the movable track 2 can move freely, so that the movable track 2 is not easily stuck.

[0091] Therefore, in summary, there are multiple movable connecting parts 7 with high degrees of freedom (such as bearing seats 4, floating components 5, movable connecting parts 7) between the movable rail 2 and the base 1, which can make the movable rail 2 not easily stuck during the movement. At the same time, it also makes the transmission structure such as the screw 31 reduce its processing accuracy and installation difficulty, simple installation and operation, strong practicality, and can also improve transportation efficiency.

[0092] Other structures and operations of the track switching device 100 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0093] Throughout this specification, references to terms such as "some embodiments," "optionally," "further," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0094] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A track switching device, characterized in that: include: a base, wherein a slide rail is formed on the base; A movable track, wherein a slider is formed on the movable track and cooperates with the slide rail; a screw drive assembly, the screw drive assembly being disposed on the base and configured to drive the movable track to reciprocate along the slide rail; a movable connecting member, the movable connecting member being movably disposed between the movable track and the lead screw drive assembly so as to enable the movable track and the lead screw drive assembly to slide or rotate relative to each other; The movable connecting member comprises: a first mounting seat connected to the lead screw drive assembly; a second mounting base connected to the movable track; A guide rod, the guide rod being provided between the first mounting seat and the second mounting seat, the guide rod sliding relative to the first mounting seat and / or the second mounting seat along the axis direction of the guide rod; The second mounting seat includes: a first inner shaft and a first outer shaft, the first inner shaft is sleeved on the guide rod, and the first inner shaft is suitable for rotating along an axis direction perpendicular to the guide rod; The inner wall of the first outer shaft and the outer wall of the first inner shaft are both formed with matching arcuate surfaces, so that the first outer shaft and the first inner shaft can rotate relative to each other along the arcuate surfaces.

2. The track switching device according to claim 1, characterized in that: A positioning hole is formed on the guide rod, and a positioning piece that matches the positioning hole is formed on the first mounting seat or the second mounting seat.

3. The track switching device according to claim 1, characterized in that: The second mounting seat includes a matching bearing, and the matching bearing is sleeved on the guide rod.

4. The track switching device according to claim 1, characterized in that: The screw drive assembly comprises: A driving motor, a driving wheel, a driven wheel, a transmission belt, a lead screw and a nut. The transmission belt is respectively sleeved on the driving wheel and the driven wheel, the driven wheel is sleeved on the lead screw, and the nut is connected to the moving track.

5. The track switching device according to claim 1, characterized in that: Also includes: A slide rail assembly is provided between the movable rail and the base, and the slide rail assembly includes: A profile frame, wherein the profile frame is arranged on the base, and the slide rail is arranged on the profile frame; A first connecting plate is fixedly connected to the movable track, the sliding block is provided on the first connecting plate, and the movable connecting member is provided between the first connecting plate and the screw drive assembly.

6. The track switching device according to claim 5, characterized in that: Also includes: A floating assembly is arranged on the base. In a direction perpendicular to the slide rail, one end of the movable rail is cooperatively connected to the slide rail assembly, and the other end of the movable rail is movably connected to the floating assembly.

7. The track switching device according to claim 6, characterized in that: The floating assembly includes: A floating block connected to the moving track; A floating groove is provided on the base, and the floating block is movably provided in the floating groove.

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