Floating back pressure roller operation gear set for grinding belt sander

Abstract

The utility model relates to the technical field of grinding machines, and discloses a floating back pressure roller operation gear set for a grinding belt sander in order to solve the technical problems that an existing floating back pressure roller system is inaccurate in power transmission, and the working precision and reliability of equipment are affected. And the back pressure roller gear is connected with the transmission gear through a back pressure roller operation transition gear and a floating intermediate gear. The back pressure roller operation transition gear is meshed with the back pressure roller gear and the floating intermediate gear, and the floating intermediate gear is meshed with the transmission gear. A first spacer bush is installed at the end of a floating shaft head of the floating back pressure roller, a transition gear shaft and a transmission gear shaft are installed in a back pressure roller operation transition gear and a floating intermediate gear respectively, the two ends are sleeved with a second spacer bush and a third spacer bush respectively, and at least one deep groove ball bearing is arranged on the side of each spacer bush. A first connecting rod and a second connecting rod are arranged and hinged to the floating shaft head, the transition gear shaft and the transmission gear shaft through deep groove ball bearings correspondingly, and stable operation of the gear is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, and in particular to a floating back pressure roller gear set for a grinding belt machine. Background Technology

[0002] Existing belt abrasive mills typically employ a floating back pressure roller system to provide stable pressure and assist the belt abrasion. Traditional floating back pressure roller systems usually use springs, sprockets, or other elastic components to achieve the raising and lowering of the floating roller and the meshing between gears. However, these traditional structures have certain limitations, especially during gear meshing, where gear loosening or transmission instability often occurs, leading to reduced equipment accuracy and reliability.

[0003] Specifically, the existing technical problems are as follows:

[0004] 1. Unstable gear meshing: Some traditional designs use springs to press the gears together to maintain meshing, but this structure can easily lead to unstable gear meshing during the raising and lowering of the floating back pressure roller. Especially when the floating standard is raised above a certain height (e.g., 10 mm), the gears may disengage or slip, affecting the normal operation of the equipment.

[0005] 2. Inaccurate power transmission: Flexible components such as springs make gear transmission less stable than direct gear meshing, resulting in lag or errors in power transmission, making it impossible to guarantee constant speed and stable working conditions.

[0006] 3. Complex structure and large space occupation: In traditional sprocket and chain designs, the chain may loosen due to the movement of the floating back pressure roller when floating up and down, resulting in inaccurate power transmission, increasing the size and complexity of the equipment, and reducing the overall efficiency.

[0007] 4. Poor equipment reliability: Due to loose structure, chain or spring components may be damaged or fail, affecting the service life and long-term stability of the equipment, and causing unnecessary downtime and maintenance costs to production.

[0008] The aforementioned issues require grinding equipment manufacturers to provide a more stable, reliable, and precise floating back pressure roller gear set solution to improve the equipment's working performance and reliability, and ensure the stability and accuracy of gear transmission. Utility Model Content

[0009] The purpose of this utility model is to provide a floating back pressure roller operating gear set for a grinding belt machine, which addresses the shortcomings of existing technologies and solves the technical problem of inaccurate power transmission in existing floating back pressure roller systems, affecting the working accuracy and reliability of the equipment.

[0010] To achieve the above objectives, the specific technical solution of this utility model for a floating back pressure roller operating gear set for a grinding belt machine is as follows:

[0011] A floating back pressure roller gear set for a grinding belt sander includes a back pressure roller gear and a transmission gear installed at the ends of the floating back pressure roller and the conveying rubber roller of the grinding belt sander, respectively. A back pressure roller operation transition gear and a floating intermediate gear are provided between the back pressure roller gear and the transmission gear. The back pressure roller operation transition gear is meshed with the back pressure roller gear and the floating intermediate gear, respectively. The floating intermediate gear is meshed with the transmission gear.

[0012] The floating shaft head of the floating back pressure roller is equipped with a first spacer, and the transition gear shaft and the transmission gear shaft are respectively installed in the transition gear and the floating intermediate gear of the back pressure roller. The two ends of the transition gear shaft and the transmission gear shaft are respectively fitted with a second spacer and a third spacer, and each spacer is equipped with at least one deep groove ball bearing on its side.

[0013] The system includes a first connecting rod and a second connecting rod, both ends of which have annular grooves for mounting deep groove ball bearings. The first end of the first connecting rod is hinged to the floating shaft head via a deep groove ball bearing, and the second end of the first connecting rod and the first end of the second connecting rod are respectively hinged to the transition gear shaft via deep groove ball bearings. The second end of the second connecting rod is hinged to the transmission gear shaft via a deep groove ball bearing.

[0014] Furthermore, the end of the conveying roller is provided with a transmission gear bearing seat and is axially movably connected to it. One end of the transmission gear shaft is sleeved on the upper part of the transmission gear bearing seat, the middle part of the transmission gear shaft is fixedly connected to the floating intermediate gear, and the other end of the transmission gear shaft passes through the third spacer and is installed in the deep groove ball bearing.

[0015] The floating back pressure roller gear set for a grinding belt machine provided by this utility model has the following advantages:

[0016] The design employs a structure where the back pressure roller gear and the transmission gear are connected via a transition gear and a floating intermediate gear, effectively solving the problem of unstable gear meshing during floating in existing technologies. This gear configuration ensures stable power transmission even when the floating back pressure roller rises and falls. Furthermore, the first and second connecting rods are hinged to the floating shaft head, the transition gear shaft, and the transmission gear shaft via deep groove ball bearings, providing greater range of motion and flexibility, allowing the floating back pressure roller to float freely up and down without affecting gear meshing. Each spacer is equipped with a deep groove ball bearing, ensuring a constant gear spacing and preventing loosening or poor meshing due to vertical floating. This not only improves the stability and reliability of the gear set but also ensures smooth and efficient power transmission, significantly enhancing the working accuracy and service life of the grinding belt machine. Attached Figure Description

[0017] Figure 1 A first perspective three-dimensional structural view of the internal mechanism of the belt abrasive mill provided by this utility model;

[0018] Figure 2 The second perspective three-dimensional structural view of the internal mechanism of the belt abrasive mill provided by this utility model;

[0019] Figure 3 A three-dimensional structural diagram of the conveying rubber roller, floating back pressure roller, and linkage mechanism provided by this utility model;

[0020] Figure 4 First view of the floating back pressure roller gear set and auxiliary structure provided by this utility model;

[0021] Figure 5 A second view of the floating back pressure roller gear set and its auxiliary structure provided by this utility model;

[0022] Figure 6 An exploded view of the floating back pressure roller gear set provided by this utility model.

[0023] In the diagram: 1. Front wall panel; 2. Rear wall panel; 10. Conveying roller; 20. Floating back pressure roller; 30. Connecting rod; 11. Bearing mounting seat; 12. Threaded transmission gear; 13. Transmission gear bearing; 201. Floating shaft head; 202. Water baffle; 203. Guide plate; 204. Pad; 205. Guide slide; 206. Floating bearing seat; 207. Cross roller guide rail; 208. Floating connecting block; 209. Ball screw; 31. Reducer; 32. Servo motor; 501. Back pressure roller gear; 502. Back pressure roller running transition gear; 503. Floating intermediate gear; 504. Transmission gear; 505. First spacer; 506. Second spacer; 507. Third spacer; 508. Deep groove ball bearing; 509. First connecting rod; 510. Second connecting rod; A. Floating back pressure roller running gear set. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] See Figures 1 to 6One internal mechanism of the belt abrasive grinder includes a front wall plate 1 and a rear wall plate 2. A conveying roller 10 and a floating back pressure roller 20 are arranged between the front wall plate 1 and the rear wall plate 2, with the floating back pressure roller 20 located diagonally above the conveying roller 10. Both ends of the floating back pressure roller 20 are connected to a reducer 33 via a floating mechanism. A servo motor 32 is located next to one of the reducers 33 and connected to it. The servo motor 32 is connected to the reducer 33 on the opposite side via a connecting rod 30. The reducer drives the floating mechanism on its side, causing the floating back pressure roller 20 on that side to rise and fall synchronously. The servo motor 32 transmits force to the reducer on the opposite side via the connecting rod 30, and the reducer drives the floating mechanism, causing the floating back pressure roller 20 on the opposite side to rise and fall synchronously.

[0026] The conveying roller 10 is fixed in position and cannot move up or down. Gear shafts are provided at both ends of the conveying roller 10. One end is installed in the bearing mounting seat 11, which is fixedly installed on the outer wall of the rear wall plate 2, and a threaded drive gear is installed at this end. The other end is installed in the transmission gear bearing seat 13, and a transmission gear 504 is installed thereon. The transmission gear bearing seat 13 is fixedly installed on the outer wall of the rear wall plate 2, and the transmission gear 505 is located on the outside of the transmission gear bearing seat 13.

[0027] The floating back pressure roller 20 is provided with floating shaft heads 201 at both ends. The inner sidewalls of the front wall plate 1 and the rear wall plate 2 are respectively installed with pads 204. The pads 204 are provided with elliptical holes to facilitate the up and down movement of the floating shaft heads 201. The floating shaft heads 201 are equipped with T-shaped baffles 202. The inner left sides of the pads 201 are fixedly installed with guide plates 203 that cooperate with the baffles 202, so that the baffles 202 can move up and down along the guide plates 203.

[0028] An inverted U-shaped guide slide 205 is also provided, which is fixedly installed on the outer side wall of the front wall panel 1 and the rear wall panel 2. A floating bearing seat 206 is installed on the guide slide 205, and a cross roller guide rail 207 is provided between the guide slide 205 and the floating bearing seat 206. The floating shaft head 201 passes through the baffle plate 202, the pad plate 204 and the floating bearing seat 206 in sequence, and then connects to the back pressure roller gear 501.

[0029] In order to enable the back pressure roller gear 501 to still effectively transmit power to the transmission gear 504 when it floats up and down, a back pressure roller operation transition gear 502 and a floating intermediate gear 503 are provided between the back pressure roller gear 501 and the transmission gear 504. The back pressure roller operation transition gear 502 is meshed with the back pressure roller gear 501 and the floating intermediate gear 503 respectively, and the floating intermediate gear 503 is meshed with the transmission gear 504.

[0030] The end of the floating shaft head 201 is equipped with a first spacer 505. The transition gear shaft 511 and the transmission gear shaft 512 are respectively installed in the back pressure roller running transition gear 502 and the floating intermediate gear 503. The two ends of the transition gear shaft 511 and the transmission gear shaft 512 are respectively fitted with a second spacer 506 and a third spacer 507. Each spacer is equipped with at least one deep groove ball bearing on its side. A first connecting rod 509 and a second connecting rod 510 are provided. Both ends of the first connecting rod 509 and the second connecting rod 510 are provided with annular grooves for installing deep groove ball bearings.

[0031] The floating shaft head 201 passes through the back pressure roller gear 501, the first spacer 505 and the deep groove ball bearing. The deep groove ball bearing is located in the first end of the first connecting rod 509. The floating shaft head 201 is movably connected to the first connecting rod 509 through the deep groove ball bearing.

[0032] The system is equipped with a transition gear shaft 511 and a transmission gear shaft 512. The transition gear shaft 511 passes through the back pressure roller operating transition gear 502, the second spacer 506 and the deep groove ball bearing. Two deep groove ball bearings are respectively located in the second end of the first connecting rod 509 and the first end of the second connecting rod 510. The transition gear shaft 511 is movably connected to the first connecting rod 509 and the second connecting rod 510 through the deep groove ball bearings.

[0033] The transmission gear shaft 512 passes through the floating intermediate gear 503, the third spacer 507 and the deep groove ball bearing. The transmission gear shaft 512 is movably connected to the second connecting rod 510 through the deep groove ball bearing.

[0034] The transition gear shaft 511 is fixedly connected to the back pressure roller running transition gear 502 and passes through the second spacer 506; one end of the transmission gear shaft 512 is sleeved on the upper part of the transmission gear bearing seat 13, the middle part is fixedly connected to the floating intermediate gear 503, and the other end passes through the third spacer 507 and is installed in a deep groove ball bearing.

[0035] In the entire gear set, both the floating intermediate gear 503 and the transmission gear 504 have fixed shafts, and their positions remain fixed during operation. The back pressure roller gear 501 can float up and down with the floating back pressure roller. The transition gear shaft 511 where the back pressure roller transition gear 502 is located is not fixed. The back pressure roller gear 501 and the back pressure roller transition gear 502 are meshed together. The two shafts containing the back pressure roller gear 501 and the back pressure roller transition gear 502 are defined by the first connecting rod 509, thus allowing the back pressure roller transition gear 502 to move synchronously with the back pressure roller gear 501. The first connecting rod 509 and the second connecting rod 510 are hinged, providing the back pressure roller gear 501 and the back pressure roller transition gear 502 with a certain amount of room to maneuver. During this operation, the distance between the gears remains constant, resulting in high stability.

[0036] Equipment working principle:

[0037] The device is powered by an electric motor, which drives the rotation via helical gears. These gears are connected by connecting rods 30, ultimately causing the floating back pressure roller 20 to rotate. In operation, this floating back pressure roller rotates continuously at a constant speed (e.g., 3 meters or 2.5 meters per minute) and can move up and down.

[0038] Multiple gear meshing mechanisms are employed to maintain stability and eliminate the need for sprockets and chains. Using gears ensures stable connection and power transmission.

[0039] If a sprocket and chain design is used, the chain may loosen due to up-and-down movement, resulting in a loose connection.

[0040] Compared to other devices on the market, some use spring-loaded gears, which can lead to unstable gear engagement, especially when the floating standard is raised beyond a certain height (e.g., 10 mm), causing poor gear engagement and easy disengagement. This structure does not meet the requirements for precise gear engagement, resulting in poor power transmission.

[0041] This invention provides a floating back pressure roller gear set for a grinding belt machine. The design strictly adheres to gear meshing requirements, ensuring the gears never disengage and providing more stable power transmission. The equipment has a larger vertical movement range (from 0.1 to 15 mm), offering higher stability and reliability compared to traditional designs (0.1 to 10 mm). This floating back pressure roller gear set structure provides a more stable and efficient equipment design, overcoming the limitations of traditional gear and spring clamping designs.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating back pressure roller gear set for a grinding belt machine, characterized in that, Back pressure roller gear (501) and transmission gear (504) are respectively installed at the ends of the floating back pressure roller (20) and the conveying rubber roller (10) of the grinding sander. A back pressure roller running transition gear (502) and a floating intermediate gear (503) are provided between the back pressure roller gear (501) and the transmission gear (504). The back pressure roller running transition gear (502) is meshed with the back pressure roller gear (501) and the floating intermediate gear (503) respectively. The floating intermediate gear (503) is meshed with the transmission gear (504). The floating shaft head (201) of the floating back pressure roller (20) is equipped with a first spacer (505), and the back pressure roller operation transition gear (502) and the floating intermediate gear (503) are respectively equipped with a transition gear shaft (511) and a transmission gear shaft (512). The two ends of the transition gear shaft (511) and the transmission gear shaft (512) are respectively fitted with a second spacer (506) and a third spacer (507). Each spacer is equipped with at least one deep groove ball bearing on its side. The first connecting rod (509) and the second connecting rod (510) are provided. Both ends of the first connecting rod (509) and the second connecting rod (510) are provided with annular grooves for installing deep groove ball bearings. The first end of the first connecting rod (509) is hinged to the floating shaft head (201) through the deep groove ball bearing. The second end of the first connecting rod (509) and the first end of the second connecting rod (510) are respectively hinged to the transition gear shaft (511) through the deep groove ball bearing. The second end of the second connecting rod (510) is hinged to the transmission gear shaft (512) through the deep groove ball bearing.

2. The floating back pressure roller gear set for a grinding belt machine according to claim 1, characterized in that, The end of the conveying roller (10) is provided with a transmission gear bearing seat (13) and is axially connected to it. One end of the transmission gear shaft (512) is sleeved on the upper part of the transmission gear bearing seat (13), the middle part of the transmission gear shaft (512) is fixedly connected to the floating intermediate gear (503), and the other end of the transmission gear shaft (512) passes through the third spacer (507) and is installed in the deep groove ball bearing.

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