Lifting mechanism of high-speed lifting roller bed

Abstract

The utility model provides a lifting mechanism of a high-speed lifting roller bed, which is characterized by comprising a base, a base arranged at the lower part of the base, a vertical frame arranged at the upper part of the base, sliding rail assemblies symmetrically arranged on the vertical frame, a lifting seat mounted on the sliding rail assemblies, a mounting hole formed in the lifting seat, and a plurality of functional holes formed in the lifting seat and corresponding to the periphery of the mounting hole, a driving mechanism for driving the lifting seat to lift is mounted on the vertical frame; two horizontally-arranged bearing plates are symmetrically arranged on the two sides of the lifting base, a plurality of connecting holes are formed in the bearing plates, damping blocks are arranged on the lower sides of the bearing plates, and a protection plate is arranged on the top of the vertical frame. The driving shaft is controlled to rotate through positive and negative rotation and the rotating speed of the motor, then lifting and speed adjustment of the lifting base are achieved, the lifting speed and the running direction of the lifting base are controllable, and the working process is stable. And in the scheme that the sensor unit is arranged, accurate positioning and conveying of the automobile parts are achieved, safety is good in the lifting process, and reliability is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile parts production equipment, and particularly relates to a lifting mechanism of a high-speed lifting roller bed. BACKGROUND

[0002] As a kind of production equipment applied in automobile welding workshop, the high-speed lifting roller bed guarantees the accurate positioning and conveying of automobile body parts through the unique advantages and characteristics of the equipment itself and the flexible skid. In the prior art, the high-speed lifting roller bed on the automobile production line needs very high positioning accuracy when lifting automobile parts to the welding station. The lifting roller bed is used to automatically convey the automobile parts, including lifting the automobile parts to a high position, horizontally conveying the automobile parts to the next station, lowering the automobile parts to a low position, fixing the automobile parts by the tool clamps on both sides of the lifting roller bed, and then performing welding, gluing and manual inspection. However, in actual operation, due to mechanical structure deformation, wear and control system error, the lifting position may deviate, affecting the welding quality. In order to improve production efficiency, it is often desired to increase the lifting speed as much as possible. However, the increase of the lifting speed may cause the shaking and instability of the roller bed, affecting the normal operation of the equipment, and even causing safety accidents. Therefore, it is necessary to optimize and improve the lifting mechanism of the existing high-speed lifting roller bed. SUMMARY

[0003] Therefore, the application aims to overcome the defects in the prior art and provide a lifting mechanism of a high-speed lifting roller bed.

[0004] To achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0005] The lifting mechanism of the high-speed lifting roller bed comprises a base, a pedestal arranged at the lower part of the base, a stand arranged at the upper part of the base, slide rail assemblies arranged symmetrically on the stand, a lifting seat installed on the slide rail assemblies, a mounting hole arranged on the lifting seat, a plurality of function holes arranged around the mounting hole on the lifting seat, a driving mechanism installed on the stand for driving the lifting seat to lift, two horizontally arranged supporting plates arranged symmetrically on both sides of the lifting seat, a plurality of connecting holes arranged on the supporting plates, a damping block arranged on the lower side of the supporting plate, and a protective plate arranged on the top of the stand.

[0006] Further, the pedestal is detachably installed on the base.

[0007] Further, the side wall of the stand is provided with an upper fixing frame, one side of the lifting seat corresponding to the upper fixing frame is provided with a lower fixing frame, and a drag chain is installed between the upper and lower fixing frames.

[0008] Further, a plurality of fixing holes are arranged on the pedestal.

[0009] Further, the slide rail assembly comprises two slide rails arranged in parallel, and the lifting seat is in sliding fit with the corresponding slide rail on both sides.

[0010] Further, the stand is provided with a sensor unit, which comprises a deceleration sensor, an upper stop point detection sensor and a lower stop point detection sensor. When the automobile accessory is transported to a deceleration position, the deceleration sensor provides a signal to the PLC, the PLC controls the motor frequency converter, the motor starts to decelerate, and then the lifting seat drives the automobile accessory to decelerate. When the automobile accessory is transported to an upper / lower stop position, the upper / lower stop point detection sensor provides a signal to the PLC, the PLC controls the motor frequency converter, the motor brake stops, and then the lifting seat stops.

[0011] Further, the driving mechanism comprises a cylindrical cam mounted on the stand, a cam follower arranged on the lifting seat and matched with the cylindrical cam, a curve groove extending in a spiral shape on the outer surface of the cylindrical cam, and the cam follower rolls in the curve groove. A driving shaft is arranged on the base for driving the cylindrical cam to rotate. When the driving shaft is driven to rotate by the motor, the cylindrical cam rotates and drives the lifting seat to lift and lower.

[0012] Further, a transmission assembly is arranged between the driving shaft and the cylindrical cam, which comprises a small bevel gear arranged at the end of the driving shaft and a large bevel gear arranged at the bottom of the cylindrical cam, and the small bevel gear and the large bevel gear are in meshing engagement.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] The present application has a reasonable structure design, which is powered by an electric motor. The driving shaft is driven to rotate by forward and reverse rotation and speed control of the motor, and the power is transmitted to the cylindrical cam by the transmission assembly. The cylindrical cam drives the cam follower to move, thereby realizing the lifting and speed adjustment of the lifting seat. The lifting speed and running direction of the lifting seat are controllable, and the working process is stable. In the scheme provided with the sensor unit, the automobile accessory can be precisely positioned and transported, and the safety and reliability are high during lifting. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings.

[0016] Figure 1 The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings.

[0017] Figure 2 The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings.

[0018] Figure 3 The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings. Figure 2A structural simplified diagram of the application;

[0019] Figure 4 A structural diagram of a cylindrical cam in the application. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0021] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0023] The application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0024] A lifting mechanism of a high-speed lifting roller bed, as shown in Figures 1 to 4 The base is provided with a stand 3 on the upper part, symmetrical slide rail assemblies are provided on the stand, a lifting seat 4 is installed on the slide rail assemblies, mounting holes 5 are provided on the lifting seat, a plurality of function holes 6 are provided on the periphery of the mounting holes on the lifting seat, and a driving mechanism for driving the lifting seat to lift is installed on the stand. Two horizontally arranged supporting plates 7 are symmetrically provided on both sides of the lifting seat, and a plurality of connecting holes 8 are provided on the supporting plates. The designed function holes can realize the weight reduction of the lifting seat, and the multi-hole structure also has the function of noise reduction.

[0025] The damping block 9 is arranged on the lower side of the supporting plate, and the protection plate 10 is arranged on the top of the stand, so that even if the lifting seat moves out of position, the protection plate can play a good protection role, and the safety is good. For example, when the lifting seat moves downward and exceeds the preset lowest position, the damping block can abut against the base to realize buffering and damping. When the lifting seat moves upward and exceeds the preset highest position, the protection plate can stop the lifting seat to play a protection role. In a further improved scheme, the protection plate is in an L shape and includes a vertical connecting portion and a horizontal protection portion. The protection portion is arranged on the side of the stand where the lifting seat is installed, and the damping block can be arranged on the lower side of the protection portion to play a buffering and damping role when the lifting seat moves upward out of position, thereby forming a good protection for the equipment.

[0026] The base is detachably installed on the pedestal. The side wall of the stand is provided with an upper fixing frame 11, and the lifting seat is provided with a lower fixing frame 12 on the side corresponding to the upper fixing frame. A drag chain 13 is installed between the upper and lower fixing frames. The base is provided with a plurality of fixing holes 14. The slide rail assembly includes two parallel slide rails 20. The lifting seat is in sliding cooperation with the corresponding slide rail on both sides.

[0027] The driving mechanism includes a cylindrical cam 15 installed on the stand. A cam follower 16 is arranged on the lifting seat and cooperates with the cylindrical cam. The outer surface of the cylindrical cam is provided with a circumferentially extending curved groove 17. The cam follower rolls in the curved groove. The pedestal is provided with a driving shaft 18 for driving the cylindrical cam to rotate.

[0028] When the motor 19 drives the driving shaft to rotate, the cylindrical cam rotates and drives the lifting seat to lift. The motor driving the driving shaft is provided with a frequency converter. As an example, a transmission assembly is arranged between the driving shaft and the cylindrical cam. The transmission assembly includes a small bevel gear 21 arranged at the end of the driving shaft and a large bevel gear 22 arranged at the bottom of the cylindrical cam. The small bevel gear and the large bevel gear are in meshing cooperation.

[0029] In an optional embodiment, a sensor unit is arranged on the stand. Specifically, the sensor unit includes a deceleration sensor, an upper stop point detection sensor and a lower stop point detection sensor. When the automobile accessory is transported to the deceleration position, the deceleration sensor provides a signal to the PLC. The PLC controls the motor frequency converter, and the motor starts to decelerate, thereby driving the lifting seat to decelerate. When the automobile accessory is transported to the upper stop position / lower stop position, the upper stop point detection sensor / lower stop point detection sensor provides a signal to the PLC. The PLC controls the motor frequency converter, and the motor brake stops, thereby controlling the lifting seat to stop.

[0030] The application has reasonable structure design, is powered by an electric motor, rotates a driving shaft through forward and reverse rotation and speed control of the motor, and transmits power to a cylindrical cam through a transmission assembly, the cylindrical cam drives the cam follower to move, thereby realizing lifting and speed adjustment of the lifting seat, the lifting speed and running direction of the lifting seat are controllable, and the working process is stable. In the scheme provided with a sensor unit, accurate positioning and conveying of automobile parts are realized, safety is good during lifting, and reliability is high.

[0031] The above merely describes preferred embodiments of the application, and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A lifting mechanism for a high-speed lifting roller bed, characterized in that: The system includes a base, a pedestal at the bottom, and a vertical frame at the top. Slide rail assemblies are symmetrically arranged on the vertical frame, and a lifting seat is installed on the slide rail assemblies. The lifting seat has mounting holes and several functional holes around the mounting holes. A drive mechanism for raising and lowering the lifting seat is installed on the vertical frame. Two horizontally arranged support plates are symmetrically arranged on both sides of the lifting seat. Several connection holes are provided on the support plates, and shock-absorbing blocks are provided on the underside of the support plates. A protective plate is provided on the top of the vertical frame.

2. The lifting mechanism of a high-speed lifting roller bed according to claim 1, characterized in that: The base is detachable and can be installed on the pedestal.

3. The lifting mechanism of a high-speed lifting roller bed according to claim 1, characterized in that: The upright frame is provided with an upper fixed frame on its side wall, and the lifting seat is provided with a lower fixed frame on the side corresponding to the upper fixed frame. A drag chain is installed between the upper and lower fixed frames.

4. The lifting mechanism of a high-speed lifting roller bed according to claim 1, characterized in that: The base has several fixing holes.

5. The lifting mechanism of a high-speed lifting roller bed according to claim 1, characterized in that: The slide rail assembly includes two parallel slide rails, with the lifting seat slidingly engaging with the corresponding slide rails on both sides.

6. The lifting mechanism of a high-speed lifting roller bed according to claim 1, characterized in that: The drive mechanism includes a cylindrical cam mounted on the frame, a cam follower that cooperates with the cylindrical cam on the lifting seat, a circumferentially spirally extending curved groove on the outer surface of the cylindrical cam, the cam follower rolling in the curved groove, and a drive shaft for driving the cylindrical cam to rotate on the base.

7. The lifting mechanism of a high-speed lifting roller bed according to claim 6, characterized in that: A transmission assembly is provided between the drive shaft and the cylindrical cam. The transmission assembly includes a small bevel gear at the end of the drive shaft and a large bevel gear at the bottom of the cylindrical cam, and the small bevel gear and the large bevel gear mesh with each other.

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