Variable-angle linkage roller mechanism

Abstract

The invention discloses a variable-angle linkage roller mechanism, and belongs to the technical field of material conveying. A fixed shaft of the mechanism supports a roller through a bearing, the roller is connected with a transmission shaft through a universal joint coupling, the transmission shaft is positioned through a fixed seat, a multi-wedge belt wheel is sleeved on the transmission shaft and is locked by a ball head jackscrew, and the multi-wedge belt wheel realizes synchronous transmission of multiple groups of mechanisms through a multi-wedge belt. Angle adjustment of the rollers on the Y axis and the Z axis is achieved through the universal joint couplings, various working modes such as common roller conveying, automatic side-leaning conveying, oblique angle conveying and center conveying can be rapidly switched, and the technical problems that a traditional roller conveying line is single in function and cannot flexibly meet different conveying requirements are solved; and meanwhile, the self weight is reduced through the hollow roller, the power transmission stability is guaranteed through multi-wedge belt transmission, the structure is compact, adjustment is convenient and fast, and the device is suitable for multi-scene material conveyors of automatic production lines, logistics sorting lines and the like and has remarkable practicability and popularization value.

Description

Technical Field

[0001] This invention belongs to the field of material conveying technology, and specifically relates to a variable angle linkage roller mechanism. Background Technology

[0002] Roller conveyors are among the most widely used material handling equipment in automated production lines and logistics sorting systems. Their core function is to achieve smooth material transport through the rotation of rollers. In existing technologies, roller conveyors are mainly divided into ordinary roller conveyors, side roller conveyors, and angled roller conveyors. However, the structures of each type of roller conveyor are fixed and their functions are limited: ordinary roller conveyors can only achieve straight-line transport and cannot position materials; side / angled roller conveyors use angled rollers to allow materials to be placed on one side, but the angle is fixed and cannot be switched to center transport or ordinary transport modes; some adjustable angle roller conveyors can only achieve angle adjustment in one direction and cannot meet the needs of flexible switching in multiple scenarios.

[0003] Meanwhile, existing adjustable roller conveyors have the following drawbacks: complex transmission structure, mostly using chain drive, which is prone to chain skipping, high noise, and high maintenance costs; poor positioning reliability after roller angle adjustment, and easy angle deviation after long-term use, affecting conveying accuracy; rollers are mostly solid structures with large self-weight, which increases the drive load and reduces conveying efficiency; and cannot achieve synchronous and precise transmission of multiple sets of rollers, making it difficult to adapt to the needs of large-scale automated production lines.

[0004] To address the aforementioned issues, there is an urgent need to develop an adjustable angle roller conveyor mechanism that is compact, easy to adjust, can switch between multiple modes, and has stable transmission, in order to meet the flexible needs of different material conveying scenarios. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a variable angle linkage roller mechanism. The roller can be adjusted in multiple directions through a universal joint coupling, and the power stability can be ensured by a multi-wedge belt drive. The mechanism can realize the installation and switching of multiple modes such as ordinary conveying, side conveying, angled conveying, and center conveying, and solve the technical problems of single function and poor transmission reliability of traditional roller conveyors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a variable angle linkage roller mechanism, comprising a fixed shaft, bearings, rollers, universal joint coupling, fixed seat, multi-wedge pulley, transmission shaft, and ball head set screw; The fixed shaft is a shaft-shaped structure with mounting holes at both ends, used for fixed support of the end of the drum; the bearing is fitted on the outside of the fixed shaft and transitionally fits with the inner wall of the drum to reduce frictional resistance when the drum rotates; the drum is a hollow tubular structure, fitted on the outside of the bearing, and rotatably connected to the fixed shaft through the bearing. The hollow structure reduces the weight of the drum to reduce the drive load. One end of the universal joint coupling is connected to the power input end of the drum, and the other end is connected to the drive shaft. It is used to realize the angle adjustment of the drum around the Y-axis and Z-axis, and thus switch the working mode of the conveyor line through different installation methods. The fixed seat is a seat structure with a support base. The drive shaft passes through the universal joint coupling. The fixed seat and the universal joint coupling are concentrically interference-fitted, so that the fixed seat supports and positions the drive shaft and the universal joint coupling, ensuring the stability of the mechanism operation. The multi-wedge pulley is mounted on the drive shaft and is divided into a left wedge groove and a right wedge groove. Each of the left and right wedge grooves is fitted with a multi-wedge belt to achieve synchronous power transmission of multiple sets of roller conveyor mechanisms. The drive shaft passes through the fixed base and is connected to the rollers on both sides through universal joint couplings at both ends to transmit the power of the multi-wedge pulley to the rollers. The ball head set screw is threaded to the side wall of the multi-ribbed pulley, and the ball head end presses against the drive shaft to lock the multi-ribbed pulley and the drive shaft, preventing slippage during transmission and ensuring the stability of power transmission.

[0007] Furthermore, the universal joint coupling is a cross-shaped universal joint, which can realize ±30° angle adjustment of the roller around the Y-axis (horizontal and perpendicular to the conveying direction) and the Z-axis (vertical direction). After adjustment, it can be positioned by locking parts to ensure that the angle is fixed.

[0008] Furthermore, the inner wall of the roller is interference-fitted with the bearing, and the bearing is transition-fitted with the fixed shaft to ensure the flexibility of the roller rotation; sealed end caps are provided at both ends of the roller to prevent dust and impurities from entering the bearing and extend its service life.

[0009] Furthermore, the left and right wedge grooves of the multi-wedge pulley are symmetrically distributed, which can connect two multi-wedge belts at the same time to realize synchronous transmission of multiple sets of rollers, resulting in high transmission efficiency, low noise, and convenient maintenance.

[0010] Furthermore, the bottom of the fixed base is provided with adjusting bolts for fine-tuning the height of the drive shaft, thereby adjusting the levelness of the roller and ensuring the smoothness of the conveying.

[0011] Furthermore, the ball end of the ball head screw is made of hard alloy material to improve the tightening force and wear resistance, and to prevent loosening after long-term use.

[0012] The working principle of this invention is as follows: This mechanism transmits power to the drive shaft via a multi-ribbed pulley and a multi-ribbed belt. The drive shaft, through a universal joint coupling, drives the rollers on both sides to rotate, thus conveying materials. When it is necessary to switch working modes, the installation angle of the rollers can be adjusted via the universal joint coupling. Ordinary roller conveyor mode: The rollers are adjusted to a horizontal state parallel to the conveying direction to achieve straight-line material conveying; Automatic side-aligning / angled roller conveyor mode: The roller is tilted at a certain angle around the Y-axis, so that the material automatically sticks to one side baffle during the conveying process, achieving single-sided positioning; Centered conveying mode: The two rollers are tilted symmetrically towards the middle, so that the material is automatically centered during the conveying process, achieving centered positioning; Variable angle conveying mode: By adjusting the angle of the roller around the Z-axis, the conveyor line can be turned to adapt to the layout requirements of the production line.

[0013] The beneficial effects of this invention are: It can switch between multiple modes flexibly. The angle of the roller around the Y-axis and Z-axis can be adjusted by the universal joint coupling. It can quickly switch to various modes such as ordinary conveying, side conveying, angled conveying, center conveying, and variable angle conveying to adapt to different material conveying scenarios and solve the problem of the single function of traditional roller conveyors. Its transmission is stable and reliable. It adopts multi-wedge belt drive, which has high transmission efficiency, low noise, and no chain skipping problem. The ball head set screw locks the multi-wedge pulley and the drive shaft to prevent slippage and ensure the synchronous and precise transmission of multiple sets of rollers. The structure is lightweight, with a hollow roller design that significantly reduces the roller's weight, reduces the drive load, improves conveying efficiency, and reduces energy consumption; Compact structure and easy maintenance: The overall structure is highly integrated, with small installation space, convenient angle adjustment, bearing sealing design to extend service life, and low maintenance cost; With a wide range of applications, it is suitable for material conveying in various scenarios such as automated production lines, logistics sorting lines, food processing lines, and aquatic product processing lines, and has significant practical value and promotion potential. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a half-sectional view of the present invention; Explanation of reference numerals in the attached diagram: 1-fixed shaft, 2-bearing, 3-drum, 4-universal joint coupling, 5-fixed seat, 6-multi-ribbed pulley, 7-drive shaft, 8-ball head set screw. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 2 As shown, a variable angle linkage roller mechanism includes a fixed shaft 1, a bearing 2, a roller 3, a universal joint coupling 4, a fixed seat 5, a multi-wedge pulley 6, a transmission shaft 7, and a ball head set screw 8. The fixed shaft 1 is a shaft-shaped structure with mounting holes at both ends, used for fixed support at the end of the roller 3; the bearing 2 is fitted on the outside of the fixed shaft 1 and transitionally fits with the inner wall of the roller 3 to reduce the frictional resistance between the roller 3 and the fixed shaft 1 when the roller 3 rotates; the roller 3 is a hollow tubular structure, fitted on the outside of the bearing 2, and rotatably connected to the fixed shaft 1 through the bearing 2. The hollow structure reduces the weight of the roller 3 and reduces the driving load. Universal joint coupling 4 is a cross-shaft universal joint, one end of which is connected to the power input end of the roller 3, and the other end is connected to the drive shaft 7. It can realize multi-angle adjustment of the roller 3 around the Y-axis and Z-axis. After installation and adjustment, it is positioned by locking parts and used to switch the working mode of the conveyor line. The fixed seat 5 is a seat structure with a support base. The drive shaft 7 passes through the universal joint coupling 4. The fixed seat 5 and the universal joint coupling 4 are concentrically interference-fitted to realize that the fixed seat 5 supports and positions the drive shaft 7 and the universal joint coupling 4, ensuring the stability of the mechanism operation. The top of the fixed seat 5 is provided with an adjusting bolt for fine-tuning the height of the drive shaft 7 and adjusting the levelness of the roller 3. The multi-ribbed pulley 6 is mounted on the drive shaft 7 and is divided into a left wedge groove and a right wedge groove. Each of the left and right wedge grooves is fitted with a multi-ribbed belt to achieve synchronous power transmission of multiple sets of roller conveyor mechanisms. The drive shaft 7 passes through the fixed seat 5 and is connected to the two rollers 3 on both sides through universal joint couplings 4 at both ends. It is used to transmit the power of the multi-ribbed pulley 6 to the rollers 3. The ball head set screw 8 is threaded to the side wall of the multi-ribbed pulley 6. The ball head end is made of hard alloy material and is pressed against the drive shaft 7 to lock the multi-ribbed pulley 6 and the drive shaft 7, prevent slippage during transmission, and ensure the stability of power transmission.

[0017] The roller 3 is equipped with sealed end caps at both ends to prevent dust and impurities from entering the bearing 2 and extend its service life; the bearing 2 is a deep groove ball bearing to ensure the flexibility of the roller 3 rotation.

[0018] The working process of this embodiment: Multiple sets of roller conveyor mechanisms of the present invention are connected in sequence by a multi-wedge belt. The drive device drives the multi-wedge belt to rotate, the multi-wedge belt drives the multi-wedge pulley 6 to rotate, and the multi-wedge pulley 6 drives the roller 3 to rotate through the transmission shaft 7 and the universal joint coupling 4, so as to realize the conveying of materials. When it is necessary to switch to the automatic side-mounted roller conveyor mode, loosen the locking part of the universal joint coupling 4, tilt the roller 3 around the Y-axis at an appropriate angle, and lock the universal joint coupling 4 to keep the roller 3 in an inclined state. During the conveying process, the material will automatically stick to one side baffle to achieve single-sided positioning. When it is necessary to switch to the centering conveying mode, the two rollers 3 are installed at an appropriate angle towards the Y-axis (horizontal and perpendicular to the conveying direction). The larger the angle, the faster the material centers, so that the material automatically centers during the conveying process and achieves centering positioning. When it is necessary to switch to the normal roller conveyor mode, adjust roller 3 to a horizontal position parallel to the conveying direction to achieve straight material conveying. When it is necessary to adjust the angle of the conveyor line, adjust the angle of part of the roller 3 around the Y-axis (horizontally perpendicular to the conveying direction) to realize the turning of the conveyor line and adapt to the layout requirements of the production line.

[0019] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A variable angle linkage roller mechanism, characterized in that, Includes a fixed shaft (1), bearing (2), roller (3), universal joint coupling (4), fixed seat (5), multi-ribbed pulley (6), drive shaft (7), and ball head set screw (8); The fixed shaft (1) is set at the end of the roller (3) for end support and positioning of the roller (3); the bearing (2) is sleeved on the fixed shaft (1), and the outer ring of the bearing (2) cooperates with the inner wall of the roller (3) so that the roller (3) can rotate around the fixed shaft (1); The drum (3) is a hollow cylindrical structure; the power input end of the drum (3) is connected to the drive shaft (7) through a universal joint coupling (4); The universal joint coupling (4) enables the roller (3) to be angularly adjustable relative to the drive shaft (7) in at least two spatial directions; The drive shaft (7) passes through the universal joint coupling (4), and the fixed seat (5) is concentrically interference-fitted with the universal joint coupling (4) to realize the fixed seat (5) supporting and positioning the drive shaft (7) and the universal joint coupling (4); The multi-ribbed pulley (6) is fixedly installed on the transmission shaft (7). The multi-ribbed pulley (6) is provided with a left wedge groove and a right wedge groove respectively. The two wedge grooves are used to cooperate with the multi-ribbed belt to realize power transmission. The multi-ribbed pulley (6) is provided with a threaded hole, and the ball head set screw (8) is pressed against the outer wall of the drive shaft (7) through the threaded hole to realize the circumferential locking and torque transmission between the multi-ribbed pulley (6) and the drive shaft (7).

2. The variable angle linkage roller mechanism according to claim 1, characterized in that, The universal joint coupling (4) is a cross-shaped universal joint, which can realize the angle deflection adjustment of the roller (3) around the horizontal Y-axis and the vertical Z-axis perpendicular to the conveying direction, so that the roller (3) can be installed in an inclined state or in a parallel conveying state.

3. The variable angle linkage roller mechanism according to claim 1, characterized in that, The fixed shaft (1) is a non-rotating support shaft. The fixed shaft (1) is fitted with the inner ring of the bearing (2). The outer ring of the bearing (2) is fitted with the inner wall of the roller (3). The roller (3) has a sealing structure at both ends to prevent dust or debris from entering the bearing (2).

4. The variable angle linkage roller mechanism according to claim 1, characterized in that, The roller (3) has a fixed shaft (1) and a bearing (2) at only one end. The end of the roller (3) without the fixed shaft (1) and bearing (2) is connected to the drive shaft (7) through a universal joint coupling (4) to realize power input.

5. The variable angle linkage roller mechanism according to claim 1, characterized in that, The fixed seat (5) is a support body structure. The fixed seat (5) has a through hole or bearing structure for accommodating the transmission shaft (7), so that the transmission shaft (7) can be rotatably supported on the fixed seat (5).

6. The variable angle linkage roller mechanism according to claim 1, characterized in that, The left and right wedge grooves of the multi-wedge pulley (6) are arranged symmetrically and are used to connect a multi-wedge belt to realize the series synchronous transmission between multiple sets of roller conveyor mechanisms.

7. The variable angle linkage roller mechanism according to claim 1, characterized in that, The ball end of the ball head screw (8) is pressed against the surface of the drive shaft (7) to prevent the multi-wedge pulley (6) from slipping circumferentially and moving axially relative to the drive shaft (7).

8. The variable angle linkage roller mechanism according to claim 1, characterized in that, By adjusting the tilt angle of the roller (3) relative to the conveying direction, the mechanism can switch between at least the following working modes: ordinary straight conveying mode with the roller parallel to the conveying direction; automatic side conveying mode with the roller tilted to one side; oblique conveying mode with the rollers tilted; and material centering conveying mode with the rollers on both sides symmetrically tilted towards the middle.

9. A variable angle linkage roller mechanism according to claim 1, characterized in that, Multiple sets of the variable angle linkage roller mechanism are connected in series with multiple wedge belts and driven by one or more power sources to achieve synchronous rotation, forming a roller conveyor line with an overall switchable conveying mode.

10. A multi-mode adjustable roller conveyor line, characterized in that, It includes multiple variable angle linkage roller mechanisms as described in any one of claims 1 to 10. Each mechanism is linked by multiple wedge belts and multiple wedge pulleys (6). By uniformly adjusting the angle of each roller (3), the entire conveyor line can switch between normal conveying, side conveying, angled conveying and center conveying modes.

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