Lifting mechanism of high-speed lifting roller bed

Abstract

The invention 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 invention belongs to the technical field of automobile parts production equipment, and in particular relates to a lifting mechanism of a high-speed lifting roller bed. Background Art

[0002] As a production equipment used in automobile welding workshops, the high-speed lifting roller bed in the automobile manufacturing industry ensures the precise positioning and transportation of the body parts through the unique advantages and characteristics of the equipment itself and the skid with a certain flexibility. In the prior art, the high-speed lifting roller bed on the automobile production line requires extremely high positioning accuracy when lifting automobile parts to the welding station. The lifting roller bed is used to automatically transport the car parts, including: lifting the car parts to a high position, then horizontally transmitting them to the next station, and then lowering the car parts to a low position, using the tooling fixtures on both sides of the lifting roller bed to fix the car parts, and then welding, gluing and manual inspection. However, in actual operation, due to deformation, wear and error of the mechanical structure and control system, the lifting position may deviate, affecting the welding quality. In order to improve production efficiency, it is often hoped that the lifting speed is as fast as possible, but the increase in speed may cause the roller bed to shake and be unstable, 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 of the invention

[0003] In view of this, the invention aims to overcome the defects in the prior art and proposes a lifting mechanism for a high-speed lifting roller bed.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A lifting mechanism for a high-speed lifting roller bed comprises a base, a pedestal is arranged at the lower part of the base, a vertical frame is arranged at the upper part of the base, a slide rail assembly is symmetrically arranged on the vertical frame, a lifting seat is installed on the slide rail assembly, a mounting hole is arranged on the lifting seat, and a plurality of functional holes are arranged on the periphery of the mounting hole corresponding to the lifting seat, a driving mechanism for driving the lifting seat to rise and fall is installed on the vertical frame; two horizontally arranged supporting plates are symmetrically arranged on both sides of the lifting seat, a plurality of connecting holes are arranged on the supporting plates, a shock absorbing block is arranged on the lower side of the supporting plates, and a protective plate is arranged on the top of the vertical frame.

[0006] Furthermore, the base can be detachably mounted on the pedestal.

[0007] Furthermore, an upper fixing frame is provided on the side wall of the vertical frame, a lower fixing frame is provided on a side of the lifting seat corresponding to the upper fixing frame, and a drag chain is installed between the upper and lower fixing frames.

[0008] Furthermore, the base is provided with a plurality of fixing holes.

[0009] Furthermore, the slide rail assembly includes two slide rails arranged in parallel, and the two sides of the lifting seat are respectively slidably matched with the corresponding slide rails.

[0010] Furthermore, the stand is provided with a sensor unit, which includes a deceleration sensor, an upper stop point detection sensor, and a lower stop point detection sensor. When the auto parts are transferred to the deceleration position, the deceleration position sensor provides a signal to the PLC, and the PLC controls the motor inverter, and the motor starts to decelerate, thereby causing the lifting seat to drive the auto parts to decelerate. When the auto parts are transferred to the upper / lower stop position, the upper / lower stop point detection sensor provides a signal to the PLC, and the PLC controls the motor inverter, and the motor brake stops, thereby controlling the lifting seat to stop.

[0011] Furthermore, the driving mechanism includes a cylindrical cam installed on the stand, a cam follower cooperating with the cylindrical cam is provided on the lifting seat, the outer surface of the cylindrical cam is provided with a curved groove extending in a circumferential spiral shape, the cam follower rolls in the curved groove, and a driving shaft for driving the cylindrical cam to rotate is provided on the base. When the driving shaft is driven to rotate by the motor, the cylindrical cam rotates and drives the lifting seat to rise and fall.

[0012] Furthermore, a transmission assembly is provided between the driving shaft and the cylindrical cam, and the transmission assembly includes a small bevel gear provided at the end of the driving shaft and a large bevel gear provided at the bottom of the cylindrical cam, and the small bevel gear and the large bevel gear are meshed with each other.

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

[0014] The invention has a reasonable structural design, powered by an electric motor, and the rotation of the drive shaft is controlled by the forward and reverse rotation and speed of the motor, and the transmission component transmits power to the cylindrical cam, which 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 with a sensor unit, the automobile parts can be accurately positioned and transported, and the safety and reliability are high during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 Schematic diagram when creating applications for the present invention;

[0018] Figure 3 for Figure 2Simplified diagram of the structure;

[0019] Figure 4 The present invention is a schematic structural diagram of a cylindrical cam. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] A lifting mechanism for a high-speed lifting roller bed, such as Figures 1 to 4 As shown, it includes a base 1, a base 2 is provided at the lower part of the base, a stand 3 is provided at the upper part of the base, a slide rail assembly is symmetrically provided on the stand, a lifting seat 4 is installed on the slide rail assembly, a mounting hole 5 is provided on the lifting seat, and a plurality of functional holes 6 are provided on the periphery of the mounting holes corresponding to the lifting seat, a driving mechanism for driving the lifting seat to rise and fall 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 functional holes can reduce the weight of the lifting seat, and the porous structure also has a noise reduction effect.

[0025] A shock-absorbing block 9 is provided on the lower side of the supporting plate, and a protective plate 10 is provided on the top of the frame. Even if the lifting seat moves too far, it can still provide good protection and has good safety. For example, when the lifting seat moves down and exceeds the preset lowest position, the shock-absorbing block will resist the base to achieve buffering and shock absorption. When the lifting seat rises and exceeds the preset highest position, the protective plate will block the lifting seat to provide protection. In a further improved scheme, the protective plate is L-shaped, including a vertical connecting portion and a horizontal protective portion. The protective portion faces the side of the frame where the lifting seat is installed, and a shock-absorbing block can also be provided on the lower side of the protective portion. When the lifting seat moves up too far, it can provide buffering and shock absorption, thereby providing good protection for the equipment.

[0026] The base can be detachably mounted on the pedestal. An upper fixing frame 11 is provided on the side wall of the stand, and a lower fixing frame 12 is provided on the side of the lifting seat corresponding to the upper fixing frame, and a drag chain 13 is installed between the upper and lower fixing frames. A plurality of fixing holes 14 are provided on the base. The slide rail assembly includes two slide rails 20 arranged in parallel, and the two sides of the lifting seat are respectively slidably matched with the corresponding slide rails.

[0027] The driving mechanism includes a cylindrical cam 15 mounted on a stand, a cam follower 16 cooperating with the cylindrical cam is provided on the lifting seat, a curved groove 17 extending circumferentially in a spiral shape is provided on the outer surface of the cylindrical cam, and the cam follower rolls in the curved groove, and a driving shaft 18 for driving the cylindrical cam to rotate is provided on the base.

[0028] When the motor 19 is used to drive the driving shaft to rotate, the cylindrical cam rotates and drives the lifting seat to rise and fall. The motor driving the driving shaft is provided with a frequency converter. As an example, a transmission assembly is provided between the driving shaft and the cylindrical cam, and the transmission assembly includes a small bevel gear 21 provided at the end of the driving shaft and a large bevel gear 22 provided at the bottom of the cylindrical cam, and the small bevel gear and the large bevel gear are meshed with each other.

[0029] In an optional embodiment, a sensor unit is provided 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 auto parts are transferred to the deceleration position, the deceleration position sensor provides a signal to the PLC, the PLC controls the motor inverter, the motor starts to decelerate, and then the lifting seat drives the auto parts to decelerate. When the auto parts are transferred 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 inverter, the motor brake stops, and then controls the lifting seat to stop.

[0030] The invention has a reasonable structural design, powered by an electric motor, and the rotation of the drive shaft is controlled by the forward and reverse rotation and speed of the motor, and the transmission component transmits power to the cylindrical cam, which 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 with a sensor unit, the automobile parts can be accurately positioned and transported, and the safety and reliability are high during the lifting process.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting mechanism for a high-speed lifting roller bed, characterized in that: It includes a base, a pedestal at the lower part of the base, a vertical frame at the upper part of the base, a slide rail assembly symmetrically arranged on the vertical frame, a lifting seat installed on the slide rail assembly, a mounting hole is arranged on the lifting seat, and a plurality of functional holes are arranged on the periphery of the corresponding mounting holes on the lifting seat, and a driving mechanism for driving the lifting seat to rise and fall is installed on the vertical frame; two horizontally arranged supporting plates are symmetrically arranged on both sides of the lifting seat, a plurality of connecting holes are arranged on the supporting plates, and a shock-absorbing block is arranged on the lower side of the supporting plates, and a protective plate is arranged on the top of the vertical frame.

2. The lifting mechanism of the high-speed lifting roller bed according to claim 1 is characterized in that: The base is detachably mounted on the pedestal.

3. The lifting mechanism of the high-speed lifting roller bed according to claim 1 is characterized in that: An upper fixing frame is arranged on the side wall of the vertical frame, a lower fixing frame is arranged on a side of the lifting seat corresponding to the upper fixing frame, and a drag chain is installed between the upper and lower fixing frames.

4. The lifting mechanism of the high-speed lifting roller bed according to claim 1 is characterized in that: The base is provided with a plurality of fixing holes.

5. The lifting mechanism of the high-speed lifting roller bed according to claim 1 is characterized in that: The slide rail assembly comprises two slide rails arranged in parallel, and the two sides of the lifting seat are respectively slidably matched with the corresponding slide rails.

6. The lifting mechanism of the high-speed lifting roller bed according to claim 1, characterized in that: The driving mechanism includes a cylindrical cam installed on a stand, a cam follower matching the cylindrical cam is provided on the lifting seat, a curved groove extending circumferentially in a spiral shape is provided on the outer surface of the cylindrical cam, the cam follower rolls in the curved groove, and a driving shaft for driving the cylindrical cam to rotate is provided on the base.

7. The lifting mechanism of the high-speed lifting roller bed according to claim 6, characterized in that: A transmission assembly is arranged between the driving shaft and the cylindrical cam. The transmission assembly 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. The small bevel gear and the large bevel gear are meshed with each other.

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