Automatic centering and positioning working device for center plate

Abstract

The utility model relates to the technical field of engineering machinery, in particular to an automatic centering and positioning working device for a center plate, which comprises a positioner frame, a rotating mechanism arranged in an inner cavity of the positioner frame, a rotating platform horizontally arranged above the positioner frame, and an upper end of the rotating mechanism fixedly mounted at the bottom of the rotating platform. A plurality of supporting columns are fixedly connected to the top of the rotating platform at intervals, a centering positioning mechanism is arranged between every two supporting columns in the horizontal transverse direction, and an angle positioning mechanism is arranged between every two supporting columns in the horizontal longitudinal direction; a center plate is further included, a positioning notch is formed in the periphery of the center plate, the top of each supporting column abuts against the corresponding position of the annular bottom face of the center plate in the working state, the center positioning mechanism is used for clamping the circumferential side portion of the inner periphery of the center plate, and the angle positioning mechanism is used for clamping the positioning notch. The device has the advantages that operation is convenient and rapid, the transmission structure is stable, the applicability of the device is improved, it is guaranteed that all structures can be accurately in butt joint when the inner cylinder is assembled, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an automatic centering positioning working device for a web. Background Art

[0002] The steel wheel is an important component of the vibratory wheel roller, among which the steel wheel inner cylinder component is its core component, including three parts: the web, the small inner cylinder and the oil box.

[0003] In order to improve the automation rate and thus reduce labor intensity, inner tube components are often produced by automatic assembly and welding, and the positioning of the sub-component webs becomes a key issue.

[0004] For example, a steel wheel welding positioning device is disclosed in the patent document with patent publication number CN210334920U, which includes a base plate, the base plate is provided with a plurality of positioning and fixing seats for placing the lower outer plate, a plurality of vertically arranged limit shaft cores, a second limit sleeve arranged on the limit shaft core and abutting the outer wall of the lower outer plate, a first limit sleeve arranged on the limit shaft core and abutting the outer wall of the upper outer plate, the base plate is provided with a positioning mechanism for positioning the inner plate relative to the inner ring, the positioning mechanism includes a core shaft fixing seat arranged on the base plate, an adjustment seat arranged on the core shaft fixing seat, a placement plate arranged on the adjustment seat and for placing the inner plate, a sleeve arranged on the placement plate and abutting the inner wall of the inner plate, a positioning component arranged on the core shaft fixing seat and fixing the position of the inner plate, and the core shaft fixing seat is concentrically arranged with the adjustment seat, the placement plate and the sleeve.

[0005] According to the existing technical literature, the positioning device can drive the cone shaft to move downward by rotating the screw, and then press the steel balls through the inclined surface of the lower end of the cone shaft, so that each steel ball moves outward along the positioning hole in turn, so that the outermost steel ball can finally press against the inner wall of the inner plate, thereby realizing the positioning of the inner plate. However, since the radial size of the sleeve is fixed, the length of the positioning hole is also fixed, and the size of the corresponding inner plate is also specific. The applicability of the device is poor. In order to process steel wheels of different sizes, multiple sets of sleeves of different sizes need to be configured to adapt to the corresponding sizes of inner plates; at the same time, since the size of the steel balls is small and there is a lack of effective structure to limit the steel balls, the steel balls are easy to fall out of the positioning holes in the non-working state, thereby affecting the subsequent work of the device.

[0006] To this end, the utility model optimizes and improves the problems of poor applicability and low structural stability of the devices in the prior art, and hereby proposes a new centering positioning device that can adapt to a variety of different sizes of plates within a certain range and has a more stable structural operation, so as to better solve the problems in the prior art. Utility Model Content

[0007] The utility model is to solve one of the above technical problems, and the technical solution adopted is: an automatic centering positioning working device for a web, comprising a fixed and hollow positioner frame, a rotating mechanism is arranged in the inner cavity of the positioner frame, a rotating platform is arranged horizontally above the positioner frame, the upper end of the rotating mechanism is fixedly installed on the bottom of the rotating platform, a plurality of supporting columns are fixedly connected to the top of the rotating platform, a centering positioning mechanism is arranged horizontally in the space between the supporting columns, and an angle positioning mechanism is arranged horizontally in the space between the supporting columns;

[0008] It also includes a web plate of an annular structure, a positioning notch is opened on the circumferential side of the outer periphery of the web plate, the top of each of the support columns respectively abuts against the corresponding position of the annular bottom surface of the web plate in the working state, the center positioning mechanism is used to clamp the circumferential side of the inner periphery of the web plate, and the angle positioning mechanism is used to clamp the positioning notch;

[0009] The centering positioning mechanism includes a mounting bracket, which is laterally fixedly connected to the middle part of the top surface of the rotating platform, and a lead screw is movably installed in the middle part of the mounting bracket along its length direction. An air motor is fixedly installed at one end of the mounting bracket, and the driving shaft of the air motor is coaxially fixedly connected to the corresponding end of the lead screw. A through groove is opened on the top of the mounting bracket along its length direction, and clamping members are respectively provided above the two ends of the through groove, and the lower ends of the two clamping members pass through the through groove and are movably connected to the lead screw. In the working state, the upper ends of the two clamping members are respectively pressed against the corresponding positions of the circumferential side of the inner periphery of the web plate.

[0010] In any of the above schemes, it is preferred that the clamping member includes a first slider, a transmission seat is fixedly connected to the middle of the bottom surface of the first slider, the transmission seat passes through the through groove and is threadedly connected to the lead screw, the side portions of the bottom surface of the first slider are respectively pressed against the corresponding positions of the top of the mounting bracket, the top of the first slider is fixedly connected to a mounting seat, and a plurality of positioning columns are fixedly connected to the top of the mounting seat at intervals, and each of the positioning columns is respectively pressed against the corresponding positions of the circumferential inner wall of the web in a working state.

[0011] In any of the above solutions, preferably, a limiting frame is fixedly installed at a corresponding position on the top of the mounting bracket, and one side portion of the first sliding block is movably engaged in the limiting frame.

[0012] In any of the above solutions, preferably, the top surface of the mounting seat and the top surface of the supporting column are located at the same height.

[0013] In any of the above schemes, it is preferred that the angle positioning mechanism includes a guide rail seat arranged on one side of the mounting bracket, the guide rail seat is fixedly connected to the middle part of the top surface of the rotating platform along the longitudinal direction, a positioning piece is movably installed on the guide rail seat, and also includes a first cylinder arranged on one side of the guide rail seat, the first cylinder is fixedly connected to the corresponding position of the top of the rotating platform along the longitudinal direction, and the telescopic end of the first cylinder is fixedly connected to the positioning piece.

[0014] In any of the above schemes, preferably, the positioning member includes a mounting plate, the bottom of the mounting plate is fixedly connected to a guide rail, the bottom of the guide rail is slidably connected to the top of the guide rail seat, the outer end of the mounting plate is fixedly connected to a first connecting block, the telescopic end of the first cylinder is fixedly connected to the first connecting block, the top of the middle section of the mounting plate is fixedly connected to a two-stroke cylinder, the telescopic parts at both ends of the two-stroke cylinder are respectively fixedly connected to positioning blocks, and in a working state, the upper ends of the two positioning blocks are respectively pressed against the corresponding inner walls of the positioning notch.

[0015] In any of the above schemes, preferably, the top of the inner end of the mounting plate is fixedly connected to a limiting column, and the limiting column presses against the inner wall of the positioning notch in a working state.

[0016] In any of the above schemes, preferably, the rotating mechanism includes a rotating column, which is movably installed in a rotating hole at the top of the positioner frame along a vertical direction, the upper end of the rotating column is fixedly connected to the middle part of the bottom surface of the rotating platform, the lower end of the rotating column extends into the inner cavity of the positioner frame and is coaxially fixedly connected with a gear, a slide rail is horizontally fixedly connected to the inner wall of the positioner frame, a second slider is slidably connected to the slide rail, a rack is horizontally fixedly connected to the second slider, the gear is meshingly connected to the rack, a second cylinder is provided below the second slider along its length direction, a second connecting block is fixedly connected to the end of the second slider, one end of the second cylinder is fixedly connected to the corresponding inner wall of the positioner frame, and the other end of the second cylinder is fixedly connected to the second connecting block.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. The utility model drives the lead screw to rotate through an air motor, thereby driving the two first sliders to slide back to each other, and further driving the corresponding mounting seats to move synchronously, so that the two pairs of positioning columns are finally pressed against the circumferential side walls of the inner periphery of the web, so that the web can be automatically adjusted to the center position, the operation is convenient and quick, and the transmission structure is stable. At the same time, the spacing between the two pairs of positioning columns can be flexibly adjusted within a certain range, so as to better adapt to the centering positioning work of webs of different radial sizes, and greatly improve the applicability of the device.

[0019] 2. The utility model drives the mounting plate to translate along the guide rail seat through the first cylinder, and can move the two positioning blocks into the positioning notches at the specified positions of the web plate. At the same time, under the operation of the double-stroke cylinder, the corresponding positioning blocks can be driven to move toward the outside of the mounting plate, so that the two positioning blocks move back to back until they are respectively pressed against the corresponding inner walls of the positioning notches, thereby ultimately realizing automatic adjustment of the position of the web plate, ensuring that the various structures of the inner cylinder can be accurately docked when being assembled, thereby improving installation efficiency.

[0020] 3. The utility model drives the second slider to translate along the slide rail through the second cylinder, and then drives the rack to move horizontally accordingly, thereby driving the gear to rotate, and finally drives the rotating platform to rotate through the rotating column, so that the web after positioning can be flexibly and quickly switched between the 0 degree position and the 180 degree position, so as to facilitate the assembly of the inner cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the specific implementation of the utility model, the following will briefly introduce the drawings required for the specific implementation. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, each element or component is not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the centering positioning device of the utility model in a working state.

[0023] Figure 2 It is a partial structural schematic diagram of the centering positioning device of the utility model in working state.

[0024] Figure 3 It is a schematic diagram of the local structure of the centering positioning device of the utility model from the outside perspective.

[0025] Figure 4 It is a schematic diagram of the local structure of the centering positioning device of the utility model from the inner side perspective.

[0026] Figure 5 It is a partial cross-sectional view of the centering positioning device of the utility model.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the centering positioning mechanism of the utility model.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the angle positioning mechanism of the utility model.

[0029] In the figure, 1, the positioner frame; 2, the rotating platform; 3, the support column; 4, the width plate; 5, the positioning notch; 6, the mounting bracket; 7, the screw; 8, the pneumatic motor; 9, the through groove; 10, the first slider; 11, the transmission seat; 12, the mounting seat; 13, the positioning column; 14, the guide rail seat; 15, the first cylinder; 16, the mounting plate; 17, the guide rail; 18, the first connecting block; 19, the two-stroke cylinder; 20, the positioning block; 21, the limiting column; 22, the rotating column; 23, the gear; 24, the slide rail; 25, the second slider; 26, the rack; 27, the second cylinder; 28, the second connecting block; 29, the protective cover; 30, the screw fixing seat; 31, the limiting frame. DETAILED DESCRIPTION

[0030] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the scope of protection of the utility model. Figure 1-Figure 7 as shown in .

[0031] An automatic centering positioning device for a web, comprising a fixedly arranged and internally hollow positioner frame 1, a rotating mechanism is arranged in the inner cavity of the positioner frame 1, a rotating platform 2 is arranged horizontally above the positioner frame 1, the upper end of the rotating mechanism is fixedly mounted on the bottom of the rotating platform 2, a plurality of support columns 3 are fixedly connected to the top of the rotating platform 2 at intervals, a centering positioning mechanism is arranged horizontally in the space between the support columns 3, and an angle positioning mechanism is arranged horizontally in the space between the support columns 3;

[0032] It also includes a web plate 4 with an annular structure, and a positioning notch 5 is opened on the circumferential side of the outer periphery of the web plate 4. In the working state, the top of each support column 3 abuts against the corresponding position of the annular bottom surface of the web plate 4, and the center positioning mechanism is used to clamp the circumferential side of the inner periphery of the web plate 4, and the angle positioning mechanism is used to clamp the positioning notch 5.

[0033] The bottom of the positioner frame 1 is fixed at the corresponding workstation position by bolts, and a rotating mechanism is fixed inside it to drive the rotating platform 2 to rotate on the horizontal plane. There are four support columns 3, which are evenly spaced and fixed on the top of the rotating platform 2. The overall structure of the center positioning mechanism and the overall structure of the angle positioning mechanism are vertically arranged, and both are located between the four support columns 3.

[0034] In the working state, the operator places the web plate 4 on the top of the support column 3. At this time, the centering positioning mechanism and the angle positioning mechanism are both located below the web plate 4. The centering positioning mechanism can clamp the circumferential side wall on the inner side of the web plate 4, thereby automatically adjusting and positioning the center position of the web plate 4 to make it centered. Then, the angle positioning mechanism is used to clamp the positioning notch 5, so that it is stabilized at the 0 degree position in the horizontal plane in the initial state. Then, driven by the rotating mechanism, the rotating platform 2 performs a 180 degree rotation movement in the horizontal plane, thereby driving the web plate 4 to rotate 180 degrees accordingly. In this way, the web plate 4 can be flexibly adjusted at the 0 degree and 180 degree positions, thereby facilitating the assembly of the inner cylinder.

[0035] The centering positioning mechanism includes a mounting bracket 6, which is laterally fixedly connected to the middle part of the top surface of the rotating platform 2, and a lead screw 7 is movably installed in the middle part of the mounting bracket 6 along its length direction. An air motor 8 is fixedly installed at one end of the mounting bracket 6, and the driving shaft of the air motor 8 is coaxially fixedly connected to the corresponding end of the lead screw 7. A through groove 9 is opened on the top of the mounting bracket 6 along its length direction, and clamping members are respectively provided above the two ends of the through groove 9, and the lower ends of the two clamping members pass through the through groove 9 and are movably connected to the lead screw 7. In the working state, the upper ends of the two clamping members are respectively pressed against the corresponding positions of the circumferential side of the inner periphery of the web 4.

[0036] A protective cover 29 is fixedly installed at one end of the mounting bracket 6, and a pneumatic motor 8 is fixed inside the protective cover 29. Screw fixing seats 30 are fixed inside both ends of the mounting bracket 6 respectively. Both ends of the screw 7 are movably mounted on the corresponding screw fixing seats 30, and one end thereof passes through the screw fixing seat 30 at this position, and is then coaxially fixedly connected with the driving shaft of the pneumatic motor 8 through a coupling.

[0037] Under the limiting action of the through slot 9, the two clamping members can be horizontally displaced along the through slot 9. The threads at both ends of the lead screw 7 have opposite rotation directions, and the lower ends of the two clamping members are respectively movably connected with the threaded sections at the corresponding ends of the lead screw 7, so that when the pneumatic motor 8 is running, its driving shaft drives the lead screw 7 to rotate. At this time, under the movably connected action of the clamping members and the lead screw 7, the two clamping members can move closer to or farther from each other, thereby completing the clamping of the inner circumferential side wall of the web 4, so that its center position is set in the center.

[0038] At the same time, through the flexible movement of the clamping member, the webs 4 with different radial sizes can be centrally positioned within a certain range, thereby improving the adaptability of the device.

[0039] In any of the above schemes, it is preferred that the clamping member includes a first slider 10, a transmission seat 11 is fixedly connected to the middle of the bottom surface of the first slider 10, the transmission seat 11 passes through the through groove 9 and is threadedly connected to the lead screw 7, the side portions of the bottom surface of the first slider 10 are respectively pressed against the corresponding positions on the top of the mounting bracket 6, the top of the first slider 10 is fixedly connected to a mounting seat 12, and a plurality of positioning columns 13 are fixedly connected to the top of the mounting seat 12 at intervals, and each of the positioning columns 13 is respectively pressed against the corresponding positions of the circumferential inner wall of the web 4 in the working state.

[0040] The two first sliding blocks 10 are symmetrically arranged above the through slot 9 at the exact middle position in the length direction of the lead screw 7. An internal thread for threaded connection with the threaded section at the corresponding end of the lead screw 7 is provided on the transmission seat 11. A pair of positioning columns 13 are fixedly installed on the top of each mounting seat 12.

[0041] At the same time, the two sides of the first slider 10 are pressed against the corresponding positions on the top of the mounting bracket 6. Through this abutment, the first slider 10 cannot rotate along with the lead screw 7. On the contrary, under the action of the rotation drive of the lead screw 7, the two first sliders 10 can be driven to move horizontally.

[0042] In the initial state, the two first sliders 10 are close to each other. At this time, the web 4 is placed on the support column 3, and the two pairs of positioning columns 13 are both located in the circular hole in the middle of the web 4. Then the pneumatic motor 8 drives the screw 7 to rotate. Under the threaded connection between the transmission seat 11 and the screw 7, the two first sliders 10 can move away from each other at the same speed along the through groove 9, thereby driving the corresponding mounting seat 12 to move horizontally, and further driving the two pairs of positioning columns 13 to move away accordingly, until the circumferential outer wall of the upper end of each positioning column 13 is pressed against the corresponding position of the circumferential inner wall of the web 4, thereby realizing the automatic adjustment and positioning of the web 4, so that it is located in the center position.

[0043] In any of the above solutions, preferably, a limiting frame 31 is fixedly installed at a corresponding position on the top of the mounting bracket 6 , and one side portion of the first sliding block 10 is movably engaged in the limiting frame 31 .

[0044] The limit frame 31 is arranged on one side of the through slot 9 along its length direction, and a sliding groove is arranged on the limit frame 31 along its length direction, so that the sliding part of the corresponding side of the first slider 10 is movably clamped in the sliding groove on the limit frame 31, thereby assisting the first slider 10 to slide along the through slot 9.

[0045] In any of the above solutions, preferably, the top surface of the mounting seat 12 and the top surface of the supporting column 3 are located at the same height.

[0046] When the web 4 is placed on the support column 3, the top of the mounting seat 12 can also abut against the corresponding position of the bottom of the web 4, thereby playing an auxiliary supporting role therefor.

[0047] In any of the above schemes, it is preferred that the angle positioning mechanism includes a guide rail seat 14 arranged on one side of the mounting bracket 6, the guide rail seat 14 is fixedly connected to the middle part of the top surface of the rotating platform 2 along the longitudinal direction, and a positioning piece is movably installed on the guide rail seat 14, and also includes a first cylinder 15 arranged on one side of the guide rail seat 14, the first cylinder 15 is fixedly connected to the corresponding position on the top of the rotating platform 2 along the longitudinal direction, and the telescopic end of the first cylinder 15 is fixedly connected to the positioning piece.

[0048] The guide rail seat 14 and the mounting bracket 6 are arranged perpendicular to each other, and the first electric cylinder 15 is arranged parallel to one side of the guide rail seat 14. The extension and retraction of the telescopic rod of the first cylinder 15 can drive the positioning member to slide on the guide rail seat 14, thereby completing the angular positioning of the web 4.

[0049] In any of the above schemes, it is preferred that the positioning member includes a mounting plate 16, the bottom of the mounting plate 16 is fixedly connected to a guide rail 17, the bottom of the guide rail 17 is slidably connected to the top of the guide rail seat 14, the outer end of the mounting plate 16 is fixedly connected to a first connecting block 18, the telescopic end of the first cylinder 15 is fixedly connected to the first connecting block 18, the top of the middle section of the mounting plate 16 is fixedly connected to a two-stroke cylinder 19, the telescopic parts at both ends of the two-stroke cylinder 19 are respectively fixedly connected to positioning blocks 20, and the upper ends of the two positioning blocks 20 are respectively pressed against the corresponding inner walls of the positioning notch 5 in the working state.

[0050] The guide rail 17 is connected with the guide rail seat 14 to realize the sliding of the positioning member. The first connecting block 18 is a right-angle structural member, one end of which is fixedly connected to the top surface of the end of the mounting plate 16, and the other end is arranged on one side of the mounting plate 16 and fixedly connected to the telescopic end of the first cylinder 15. The cylinder body of the two-stroke cylinder 19 is fixedly installed on the top of the middle section of the mounting plate 16, and the telescopic rods at both ends are respectively arranged toward the two sides of the mounting plate 16. The lower end of the positioning block 20 is fixedly connected to the end of the telescopic rod of the two-stroke cylinder 19, and the upper end thereof is used to press into the positioning notch 5.

[0051] The first cylinder 15 is in operation, and its telescopic rod retracts, thereby driving the mounting plate 16 to move horizontally along the guide rail seat 14, and then driving the two positioning blocks 20 to move accordingly, until the two are moved into the positioning notch 5, and then under the operation of the double-stroke cylinder 19, its telescopic rod is synchronously extended, and the two positioning blocks 20 are correspondingly displaced to the two sides of the mounting plate 16 until the upper ends of the two are respectively pressed against the corresponding inner walls of the positioning notch 5.

[0052] In this way, under the premise that the web 4 is centered, the angle of the web 4 can be automatically adjusted through the pressing action of the two positioning blocks 20, so that the positioning notch 5 is at the 0 degree position in the horizontal plane, and then under the fixed positioning of the positioning column 13 and the positioning block 20, the web 4 can be accurately driven to rotate 180 degrees through the rotating mechanism.

[0053] In any of the above solutions, preferably, the top of the inner end of the mounting plate 16 is fixedly connected to a limiting column 21 , and the limiting column 21 presses against the inner wall of the positioning notch 5 in a working state.

[0054] The limiting pillar 21 is used to be pressed tightly against the positioning notch 5 , so as to further position the web 4 .

[0055] In any of the above schemes, it is preferred that the rotating mechanism includes a rotating column 22, which is movably installed in the rotating hole at the top of the positioner frame 1 along the vertical direction, the upper end of the rotating column 22 is fixedly connected to the middle part of the bottom surface of the rotating platform 2, the lower end of the rotating column 22 extends into the inner cavity of the positioner frame 1 and is coaxially fixedly connected with a gear 23, a slide rail 24 is horizontally fixedly connected to the inner wall of the positioner frame 1, a second slider 25 is slidably connected to the slide rail 24, a rack 26 is horizontally fixedly connected to the second slider 25, the gear 23 is meshingly connected to the rack 26, a second cylinder 27 is provided below the second slider 25 along its length direction, a second connecting block 28 is fixedly connected to the end of the second slider 25, one end of the second cylinder 27 is fixedly connected to the corresponding inner wall of the positioner frame 1, and the other end of the second cylinder 27 is fixedly connected to the second connecting block 28.

[0056] The rotating column 22 is axially fixed in the rotating hole at the top of the positioner frame 1, and can rotate radially. The second cylinder 27 is in operation, and then drives the second slider 25 to slide horizontally along the slide rail 24 through the second connecting block 28, and further drives the rack 26 to move horizontally. Under the meshing connection between the rack 26 and the gear 23, the gear 23 can rotate around its axis, and then the rotating column 22 rotates accordingly, so that the web 4 can be adjusted between two positions of 0 degrees and 180 degrees in the horizontal plane.

[0057] Specific working principle:

[0058] The operator first places the web 4 on the top of the support column 3, and then turns on the pneumatic motor 8, and drives the screw 7 to rotate through the driving shaft of the pneumatic motor 8, and then through the threaded connection between the screw 7 and the corresponding transmission seat 11, the two first sliders 10 move away from each other along the through groove 9 at the same speed, thereby driving the corresponding mounting seat 12 to move accordingly, and further driving the two pairs of positioning columns 13 to move away accordingly, until the circumferential outer wall of the upper end of each positioning column 13 presses against the corresponding position of the circumferential inner wall of the web 4, thereby realizing automatic adjustment and centering of the web 4.

[0059] Afterwards, the first cylinder 15 starts working and its telescopic rod retracts, driving the mounting plate 16 to move horizontally along the guide rail seat 14, thereby driving the limit column 21 and the two positioning blocks 20 to move accordingly, until the limit column 21 is tightly pressed against the positioning notch 5, at which time the two positioning blocks 20 are also moved into the positioning notch 5 accordingly, and then under the operation of the double-stroke cylinder 19, the two positioning blocks 20 are displaced to the two sides of the mounting plate 16, and finally the upper ends of the two are respectively pressed against the corresponding inner walls of the positioning notch 5, so that the angle of the web 4 is automatically adjusted under the premise that the web 4 is centered.

[0060] Then, the second cylinder 27 drives the second slider 25 to slide horizontally along the slide rail 24, and further drives the rack 26 to move horizontally, thereby driving the gear 23 to rotate around its axial direction, and then the rotating column 22 and the rotating platform 2 rotate accordingly, and finally the web 4 can be flexibly adjusted between the two positions of 0 degrees and 180 degrees in the horizontal plane, so as to facilitate the assembly of the inner cylinder.

[0061] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

[0062] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. An automatic centering positioning device for a web, characterized in that: It comprises a fixedly arranged and internally hollow positioner frame (1), a rotating mechanism is arranged in the inner cavity of the positioner frame (1), a rotating platform (2) is arranged horizontally above the positioner frame (1), the upper end of the rotating mechanism is fixedly mounted on the bottom of the rotating platform (2), a plurality of support columns (3) are fixedly connected to the top of the rotating platform (2) at intervals, a centering positioning mechanism is arranged horizontally in the space between the support columns (3), and an angle positioning mechanism is arranged horizontally in the space between the support columns (3); It also comprises a web plate (4) of an annular structure, wherein a positioning notch (5) is provided on the circumferential side of the outer periphery of the web plate (4), and in a working state, the top of each of the support columns (3) respectively abuts against a corresponding position of the annular bottom surface of the web plate (4), the centering positioning mechanism is used to clamp the circumferential side of the inner periphery of the web plate (4), and the angle positioning mechanism is used to clamp the positioning notch (5); The centering positioning mechanism comprises a mounting bracket (6), the mounting bracket (6) being fixedly connected to the middle part of the top surface of the rotating platform (2) in the transverse direction, a lead screw (7) being movably installed in the middle part of the mounting bracket (6) along its length direction, a pneumatic motor (8) being fixedly installed at one end of the mounting bracket (6), a driving shaft of the pneumatic motor (8) being coaxially fixedly connected to the corresponding end of the lead screw (7), a through slot (9) being provided at the top of the mounting bracket (6) along its length direction, clamping members being respectively provided above the two ends of the through slot (9), the lower ends of the two clamping members both passing through the through slot (9) and being movably connected to the lead screw (7), and the upper ends of the two clamping members respectively pressing against corresponding positions of the circumferential side of the inner periphery of the web (4) in the working state.

2. The automatic centering positioning device for a web according to claim 1 is characterized in that: The clamping member comprises a first slider (10), a transmission seat (11) is fixedly connected to the middle of the bottom surface of the first slider (10), the transmission seat (11) passes through the through slot (9) and is threadedly connected to the lead screw (7), the side portions of the bottom surface of the first slider (10) respectively press against corresponding positions on the top of the mounting bracket (6), the top of the first slider (10) is fixedly connected to a mounting seat (12), a plurality of positioning columns (13) are fixedly connected to the top of the mounting seat (12) at intervals, and each of the positioning columns (13) presses against corresponding positions on the circumferential inner wall of the web (4) in a working state.

3. The automatic centering positioning device for a web according to claim 2, characterized in that: A limiting frame (31) is fixedly mounted at a corresponding position on the top of the mounting bracket (6), and one side portion of the first sliding block (10) is movably engaged in the limiting frame (31).

4. The automatic centering positioning device for a web according to claim 3 is characterized in that: The top surface of the mounting seat (12) and the top surface of the support column (3) are located at the same height.

5. The automatic centering positioning device for a web according to claim 4, characterized in that: The angle positioning mechanism comprises a guide rail seat (14) arranged on one side of the mounting bracket (6), the guide rail seat (14) being fixedly connected to the middle of the top surface of the rotating platform (2) in the longitudinal direction, a positioning member being movably mounted on the guide rail seat (14), and a first cylinder (15) being arranged on one side of the guide rail seat (14), the first cylinder (15) being fixedly connected to a corresponding position on the top of the rotating platform (2) in the longitudinal direction, and a telescopic end of the first cylinder (15) being fixedly connected to the positioning member.

6. The automatic centering positioning device for a web according to claim 5, characterized in that: The positioning member comprises a mounting plate (16), the bottom of the mounting plate (16) is fixedly connected to a guide rail (17), the bottom of the guide rail (17) is slidably connected to the top of the guide rail seat (14), the outer end of the mounting plate (16) is fixedly connected to a first connecting block (18), the telescopic end of the first cylinder (15) is fixedly connected to the first connecting block (18), the top of the middle section of the mounting plate (16) is fixedly connected to a double-stroke cylinder (19), the telescopic parts at both ends of the double-stroke cylinder (19) are respectively fixedly connected to positioning blocks (20), and the upper ends of the two positioning blocks (20) are respectively pressed against the corresponding inner walls of the positioning notch (5) in a working state.

7. The automatic centering positioning device for a web according to claim 6, characterized in that: The top of the inner end of the mounting plate (16) is fixedly connected to a limiting column (21), and in a working state, the limiting column (21) presses against the inner wall of the positioning notch (5).

8. The automatic centering positioning device for a web according to claim 7, characterized in that: The rotating mechanism comprises a rotating column (22), the rotating column (22) being movably mounted in a rotating hole at the top of the positioner frame (1) in a vertical direction, the upper end of the rotating column (22) being fixedly connected to the middle of the bottom surface of the rotating platform (2), the lower end of the rotating column (22) extending into the inner cavity of the positioner frame (1) and being coaxially fixedly connected to a gear (23), a slide rail (24) being horizontally fixedly connected to the inner wall of the positioner frame (1), and a second sliding block being slidably connected to the slide rail (24) (25), a rack (26) is horizontally fixedly connected to the second slider (25), the gear (23) is meshingly connected to the rack (26), a second cylinder (27) is provided below the second slider (25) along its length direction, a second connecting block (28) is fixedly connected to the end of the second slider (25), one end of the second cylinder (27) is fixedly connected to the corresponding inner wall of the positioner frame (1), and the other end of the second cylinder (27) is fixedly connected to the second connecting block (28).

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