Roller structure for bag supply machine

Abstract

A roller structure for a bag supplying machine comprises a roller shaft and a roller body connected to the roller shaft in a sleeving mode, bearing assemblies used for supporting the roller body to rotate are arranged at the two ends of the roller shaft, and each bearing assembly comprises a cylindrical roller bearing used for bearing the radial load of the roller body and an angular contact bearing used for bearing the axial load of the roller body; the angular contact bearings are located on the two opposite sides of the cylindrical roller bearing, and the angular contact bearings located on the two opposite sides of the cylindrical roller bearing are installed in a back-to-back mode. Compared with the prior art, by arranging the bearing assembly comprising the cylindrical roller bearing and the angular contact bearing, the axial load generated in the rotating process of the roller body is borne under the action of the angular contact bearing, and the radial load generated in the rotating process of the roller body is borne by the cylindrical roller bearing; and under the action of the angular contact bearings mounted back to back, the radial and axial supporting angle rigidity of the angular contact bearings is increased, and the deformation resistance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rollers for bag supply machines, in particular to a roller structure for bag supply machines. Background Art

[0002] In the cross-belt sorting machine of logistics equipment, the package feeding machine is used to accurately deliver various parcels from the conveyor line to the corresponding pallets of the cross-belt sorting machine loop line. It has an important impact on the normal operation of the entire sorting system and the sorting efficiency. After transferring the parcel to the parcel delivery part, the controller controls the parcel delivery speed or waits in place according to the passing of the parcel in front to ensure the distance between the parcels. The parcel passes through the light curtain to detect the size. If no abnormality is detected, the speed regulation part adjusts the position and speed of the parcel to match the pre-allocated pallet, and finally the parcel is accurately delivered to the designated pallet in the uniform speed part.

[0003] Chinese patent number CN114289320A discloses a fully automatic feeding system for a cross-belt sorting system, comprising a belt conveyor, a spiral unpacking chute is arranged at the feeding end of the belt conveyor, and a stacking separation device, a diverging device, a single-piece separation device, a roller centering machine, a saw belt conveyor, a stacking detection device, an arrival detection device and a swing wheel sorter are arranged in sequence along the conveying direction of the belt conveyor. The swing wheel sorter is arranged at the tail section of the belt conveyor's discharging end, and the number of the swing wheel sorters is one or more; one side of the swing wheel sorter is connected to the feeding end of a four-stage fully automatic package feeding machine.

[0004] In the above-disclosed sorting system, the bag supply machine roller mainly adopts a structure in which two deep groove ball bearings are arranged at each end. The bearings of the roller of this structure are severely worn during actual use, resulting in frequent abnormal noise problems of the roller, which affects the sorting efficiency of the sorting machine. Utility Model Content

[0005] The utility model aims to overcome the defects in the prior art and provide a roller structure for a bag supply machine which is simple in structure, safe and reliable.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a roller structure for a bag supply machine, including a roller shaft and a roller body sleeved on the roller shaft, bearing assemblies for supporting the rotation of the roller body are provided at both ends of the roller shaft, and the bearing assemblies include cylindrical roller bearings for bearing the radial load of the roller body and angular contact bearings for bearing the axial load of the roller body; the angular contact bearings are located on opposite sides of the cylindrical roller bearings, and the angular contact bearings located on opposite sides of the cylindrical roller bearings are installed back to back.

[0007] As a preferred solution of the utility model, the roller shaft includes a main shaft and connecting shafts connected to both ends of the main shaft, the diameter of the connecting shaft is smaller than the diameter of the main shaft, and the bearing assembly is sleeved on the connecting shaft.

[0008] As a preferred solution of the utility model, a first shaft end cover plate and a second shaft end cover plate are installed on the connecting shaft, and the first shaft end cover plate and the second shaft end cover plate are located on opposite sides of the bearing assembly.

[0009] As a preferred solution of the utility model, the first shaft end cover plate is arranged at the connection between the main shaft and the connecting shaft, and both sides of the first shaft end cover plate are in contact with the main shaft and the bearing assembly at the same time.

[0010] As a preferred solution of the utility model, a locking nut for locking the bearing assembly is also provided on the connecting shaft, and the second shaft end cover plate is located between the locking nut and the bearing assembly.

[0011] As a preferred solution of the utility model, a fastener connected to the connecting shaft is formed on the locking nut, and the fastener is arranged along the radial direction of the connecting shaft.

[0012] As a preferred solution of the utility model, the roller body includes a conveying section, and a driving section and a driven section that rotate synchronously with the conveying section are formed at both ends of the conveying section.

[0013] As a preferred solution of the utility model, a sawtooth structure is formed on the active section to drive the roller body to rotate.

[0014] As a preferred solution of the utility model, the active section and the driven section are respectively sleeved on the bearing assemblies at both ends of the roller body, and an annular notch for axially limiting the roller body is formed at the connection between the active section and the transmission section, and an annular notch for axially limiting the roller body is also formed at the connection between the driven section and the transmission section.

[0015] As a preferred solution of the utility model, the annular notch is an annular groove arranged along the radial direction of the roller body.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging a bearing assembly including a cylindrical roller bearing and an angular contact bearing, the angular contact bearing bears the axial load generated by the roller body during the rotation, and the cylindrical roller bearing bears the radial load generated by the roller body during the rotation, and under the action of the angular contact bearings installed back to back, the radial and axial support angle rigidity of the angular contact bearings is increased, thereby improving the anti-deformation ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is a cross-sectional view of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the roller shaft;

[0021] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0022] Figure 6 yes Figure 4 A partial enlarged view of point B in the middle;

[0023] Figure numerals: roller shaft 1, conveying section 11, active section 12, driven section 13, serrated structure 14, annular notch 15, roller body 2, main shaft 21, connecting shaft 22, bearing assembly 3, cylindrical roller bearing 31, angular contact bearing 32, first shaft end cover plate 4, second shaft end cover plate 5, locking nut 6, fastener 61. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 6 As shown, a roller structure for a bag supply machine includes a roller shaft 1 and a roller body 2 sleeved on the roller shaft 1, bearing assemblies 3 for supporting the rotation of the roller body 2 are provided at both ends of the roller shaft 1, and the bearing assembly 3 includes a cylindrical roller bearing 31 for bearing the radial load of the roller body 2 and an angular contact bearing 32 for bearing the axial load of the roller body 2; the angular contact bearings 32 are located on opposite sides of the cylindrical roller bearing 31, and the angular contact bearings 32 located on opposite sides of the cylindrical roller bearing 31 are installed back to back.

[0026] The roller body 2 is sleeved on the roller shaft 1, and the roller body 2 also rotates relatively on the roller shaft 1. The bearing assembly 3 is used to support the rotation of the roller body 2, and under the action of the bearing assembly 3, the friction generated by the roller body 2 during the rotation process is reduced, so that the rotation of the roller body 2 is smoother and the energy consumption of the roller body 2 during the rotation process is reduced.

[0027] The angular contact bearings 32 located on opposite sides of the cylindrical roller bearing 31 are installed back to back, so that the large end faces of the two angular contact bearings 32 are opposite to each other, and the small end faces of the two angular contact bearings 32 are opposite to each other. This installation method can effectively utilize the space of the angular contact bearings 32, improve the load-bearing capacity and rigidity of the angular contact bearings 32, and reduce assembly errors and vibration interference. When the two angular contact bearings 32 are installed back to back, the contact angle line of the angular contact bearings 32 spreads along the direction of the rotation axis, which can increase the radial and axial support angle rigidity of the angular contact bearings 32 and maximize the anti-deformation ability.

[0028] The roller shaft 1 includes a main shaft 21 and a connecting shaft 22 connected to both ends of the main shaft 21. The diameter of the connecting shaft 22 is smaller than the diameter of the main shaft 21. The bearing assembly 3 is sleeved on the connecting shaft 22. The connecting shaft 22 is equipped with a first shaft end cover plate 4 and a second shaft end cover plate 5. The first shaft end cover plate 4 and the second shaft end cover plate 5 are located on opposite sides of the bearing assembly 3.

[0029] The bearing assembly 3 is limited under the action of the first shaft end cover plate 4 and the second shaft end cover plate 5, thereby ensuring that the angular contact bearing 32 and the cylindrical roller bearing 31 are always in a relatively stable state.

[0030] The first shaft end cover plate 4 is arranged at the connection between the main shaft 21 and the connecting shaft 22. Both sides of the first shaft end cover plate 4 are in contact with the main shaft 21 and the bearing assembly 3 at the same time. The positioning and installation of the first shaft end cover plate 4 are achieved through the diameter difference between the main shaft 21 and the connecting shaft 22, ensuring that the first shaft end cover plate 4 is in contact with the end of the main shaft 21. Under the action of the first shaft end cover plate 4, the axial movement of one side of the bearing assembly 3 is limited.

[0031] A locking nut 6 for locking the bearing assembly 3 is also provided on the connecting shaft 22. The second shaft end cover plate 5 is located between the locking nut 6 and the bearing assembly 3. The second shaft end cover plate 5 is positioned and installed by the locking nut 6. Under the action of the second shaft end cover plate 5, the axial movement of the other side of the bearing assembly 3 is limited.

[0032] A fastener 61 connected to the connecting shaft 22 is formed on the locking nut 6. The fastener 61 is arranged along the radial direction of the connecting shaft 22. The fastener 61 can be a bolt or a pin structure, so as to achieve the fixed installation of the locking nut 6 on the connecting shaft 22, and under the action of the fastener 61, the axial position of the locking nut 6 on the connecting shaft 22 is locked, so as to achieve the positioning installation of the locking nut 6 on the second shaft end cover plate 5.

[0033] The roller body 2 includes a conveying section 11 , at both ends of which are formed an active section 12 and a driven section 13 that rotate synchronously with the conveying section 11 , and a sawtooth structure 14 that drives the roller body 2 to rotate is formed on the active section 12 .

[0034] The transmission section 11, the active section 12 and the driven section 13 are an integrated structure. Under the action of the sawtooth structure 14, the rack or gear can drive the active section 12 to rotate, thereby driving the transmission section 11 and the driven section 13 to rotate, and the transmission section 11 achieves a transmission effect during the rotation process.

[0035] The active section 12 and the driven section 13 are respectively sleeved on the bearing assemblies 3 at both ends of the roller body 2. An annular notch 15 for axially limiting the roller body 2 is formed at the connection between the active section 12 and the transmission section 11. An annular notch 15 for axially limiting the roller body 2 is also formed at the connection between the driven section 13 and the transmission section 11.

[0036] The annular notch 15 is an annular groove arranged along the radial direction of the roller body 2 .

[0037] When the roller body 2 slides along the axial direction of the roller shaft 1, under the action of the annular notch 15, after the roller body 2 slides to a certain position, the annular notch 15 abuts against the first shaft end cover plate 4, thereby limiting the axial movement of the roller body 2 and ensuring that the roller body 2 is always sleeved on the roller shaft 1.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0039] Although the present invention uses the following terms more frequently: roller shaft 1, transmission section 11, driving section 12, driven section 13, serration structure 14, annular notch 15, roller body 2, main shaft 21, connecting shaft 22, bearing assembly 3, cylindrical roller bearing 31, angular contact bearing 32, first shaft end cover plate 4, second shaft end cover plate 5, locking nut 6, fastener 61, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A roller structure for a bag supply machine, comprising a roller shaft (1) and a roller body (2) sleeved on the roller shaft (1), characterized in that: Bearing assemblies (3) for supporting the rotation of the roller body (2) are provided at both ends of the roller shaft (1); the bearing assembly (3) comprises a cylindrical roller bearing (31) for bearing the radial load of the roller body (2) and an angular contact bearing (32) for bearing the axial load of the roller body (2); the angular contact bearing (32) is located on two opposite sides of the cylindrical roller bearing (31), and the angular contact bearings (32) located on two opposite sides of the cylindrical roller bearing (31) are installed back to back.

2. A roller structure for a bag supply machine according to claim 1, characterized in that: The roller shaft (1) comprises a main shaft (21) and connecting shafts (22) connected to both ends of the main shaft (21); the diameter of the connecting shaft (22) is smaller than the diameter of the main shaft (21); and the bearing assembly (3) is sleeved on the connecting shaft (22).

3. A roller structure for a bag supply machine according to claim 2, characterized in that: A first shaft end cover plate (4) and a second shaft end cover plate (5) are mounted on the connecting shaft (22); the first shaft end cover plate (4) and the second shaft end cover plate (5) are located on opposite sides of the bearing assembly (3).

4. A roller structure for a bag supply machine according to claim 3, characterized in that: The first shaft end cover plate (4) is arranged at the connection between the main shaft (21) and the connecting shaft (22), and both sides of the first shaft end cover plate (4) are in contact with the main shaft (21) and the bearing assembly (3) at the same time.

5. The roller structure for a bag supply machine according to claim 3, characterized in that: The connecting shaft (22) is also provided with a locking nut (6) for locking the bearing assembly (3), and the second shaft end cover plate (5) is located between the locking nut (6) and the bearing assembly (3).

6. A roller structure for a bag supply machine according to claim 5, characterized in that: A fastener (61) connected to the connecting shaft (22) is formed on the locking nut (6), and the fastener (61) is arranged along the radial direction of the connecting shaft (22).

7. A roller structure for a bag supply machine according to claim 1, characterized in that: The roller body (2) comprises a conveying section (11), and a driving section (12) and a driven section (13) which rotate synchronously with the conveying section (11) are formed at both ends of the conveying section (11).

8. A roller structure for a bag supply machine according to claim 7, characterized in that: The active section (12) is provided with a sawtooth structure (14) for driving the roller body (2) to rotate.

9. A roller structure for a bag supply machine according to claim 7, characterized in that: The active section (12) and the driven section (13) are respectively sleeved on the bearing assemblies (3) at both ends of the roller body (2); an annular notch (15) for axially limiting the roller body (2) is formed at the connection between the active section (12) and the transmission section (11); and an annular notch (15) for axially limiting the roller body (2) is also formed at the connection between the driven section (13) and the transmission section (11).

10. A roller structure for a bag supply machine according to claim 9, characterized in that: The annular notch (15) is an annular groove arranged along the radial direction of the roller body (2).

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