Deformable bearing strip for sorting test equipment

Abstract

The application introduces a deformable bearing belt for sorting test equipment, which can be placed in circular arc grooves with different radii of the sorting test equipment or other equipment, so as to place rotating shafts with corresponding diameters thereon. The clamping frame has a plurality of spacing limit grooves and V-shaped grooves arranged towards the inner side, and each limit groove is respectively placed with a cylindrical metal needle. The angle of each V-shaped groove can be changed to cause the clamping frame to bend and change the radius. The radius of the bearing belt of the application can be changed arbitrarily, and is suitable for being matched in grooves with different radii of circular arcs.

Description

Technical Field

[0001] The present invention relates to a rolling component used in conjunction with a rotating shaft to reduce friction. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy.

[0003] A rolling bearing is a precision mechanical component that transforms the sliding friction between a rotating shaft and its housing into rolling friction, thereby reducing frictional losses. A rolling bearing generally consists of four parts: an inner ring, an outer ring, rolling elements, and a cage. The inner ring mates with the shaft and rotates with it; the outer ring mates with the bearing housing and provides support; the rolling elements are evenly distributed between the inner and outer rings by the cage, and their shape, size, and number directly affect the performance and lifespan of the rolling bearing; the cage ensures even distribution of the rolling elements, prevents them from falling out, guides their rotation, and provides lubrication.

[0004] A few countries, such as Japan and the United States, can produce flexible bearings. Unlike ordinary bearings, flexible bearings have a very thin outer ring, which is prone to radial deformation. Before the cam is installed, the ring is round, and after installation, it becomes elliptical.

[0005] In operation, the inner ring of a flexible bearing is mounted on an elliptical rigid wheel and bears cyclic stress loads, while the outer ring is mounted on a flexible wheel and changes continuously with the elastic deformation of the flexible wheel, bearing not only cyclic stress loads but also alternating stress loads. Summary of the Invention

[0006] Purpose of the invention:

[0007] To overcome the shortcomings of existing bearings that are difficult to deform and cannot be adapted to shafts of different diameters, a deformable bearing belt for sorting and testing equipment is provided. This belt can be bent into different arc radii, making it easy to connect with shafts or grooves of different diameters in electronic or mechanical equipment such as sorting machines, testing machines, and packaging machines, thereby reducing rolling friction.

[0008] Technical solution:

[0009] The present invention provides a deformable bearing belt for a sorting and testing device, comprising a flexible bearing housing, a flexible clamping frame that is attached or bonded to the inner surface (the side that can be bent) of the bearing housing, and a plurality of parallel-arranged rigid cylindrical needle rollers clamped by the clamping frame.

[0010] The flexible bearing housing can be bent and deformed to one side, allowing the bearing band to be either straight or arc-shaped with different radii, so as to connect with shafts of different diameters or arc-shaped grooves. The flexible bearing housing will not be stretched or compressed, thus maintaining relatively stable length, width, and thickness dimensions.

[0011] The preferred flexible bearing housing is made of plastic sheet or metal sheet; the clamping frame is made of thermoplastic polymer (POM, PBT or PA, which has a low coefficient of friction and self-lubricating properties, resulting in low friction between the clamping frame and the needle rollers); the needle rollers are cylindrical metal needle rollers.

[0012] The clamping frame can bend appropriately when heated to above its glass transition temperature and below its pyrolysis temperature without melting or decomposing. During bending, the curvature of the arc can be adjusted to allow for connection with shafts of different bending radii or to fit into arc-shaped grooves of different bending radii.

[0013] The bearing housing can be tightly fitted or glued to the outer side of the clamping frame. The needle roller and the clamping frame are interlocking structures. The needle roller can rotate freely in the limiting groove of the clamping frame, but will not easily fall off.

[0014] Further optimization reveals that the clamping frame is made of PA66 (which does not use glass fiber reinforcement, does not require high rigidity, and has a heating deformation temperature of 70-140℃—higher than the glass transition temperature and lower than the pyrolysis temperature—allowing it to bend and deform while maintaining its shape well, and preventing the needle rollers from loosening or falling off). Its self-lubricating properties are superior to PBT, and its pyrolysis resistance is superior to POM.

[0015] More preferably, the clamping frame has multiple inwardly spaced limiting grooves (facilitating the placement of cylindrical needle rollers and limiting their displacement, but not significantly affecting their rolling and rotation within them) and V-shaped grooves. Between adjacent limiting grooves is a V-shaped groove opening towards the center of the arc, facilitating bending deformation of the clamping frame, causing changes in the curvature and radius of the arc, so that the bearing housing of the flexible bearing belt can better conform to the inner wall surface of the arc-shaped grooves with different radii, or allow the balls to engage with shafts of different diameters.

[0016] Beneficial effects:

[0017] This invention is easy to use; the bearing belt can easily fit into the rotating shaft or the groove, and it is also easy to disassemble.

[0018] The bearing belt used can be deformed in any arc, making it suitable for connection with shafts of various diameters and for fitting grooves of different radii. It has a wide range of applications. It can even be used as a flat rolling belt to reduce the sliding resistance of heavy objects moving on a flat surface.

[0019] Alternatively, the bearing belt can be used to connect the shaft to the arc groove, significantly reducing the rolling friction between the shaft and the groove. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the groove holder with different arc radii of the present invention.

[0022] Figure 3 This is a schematic diagram of the bearing belt's side (end face) structure in a flat state.

[0023] In the figure, 1-cylindrical needle roller; 2-bearing housing; 3-clamping frame; 4-limiting groove; 5-V-groove; 6-positioning screw hole; 7-bearing belt; 8-clip seat B; 9-arc groove B; 10-clip seat A; 11-arc groove A. Detailed Implementation

[0024] Example 1:

[0025] like Figure 1 , 3 The sorting and testing equipment shown uses a deformable bearing belt 7, which has a flexible bearing housing 2 and a flexible clamping frame 3 that is attached or bonded to its inner surface and can be bent to change its curvature; the clamping frame 3 has a plurality of parallel rigid cylindrical needle rollers 1 clamped by the clamping frame 3, and the axial direction of the rigid cylindrical needle rollers 1 is perpendicular to the plane where the end face of the bearing belt 7 is located.

[0026] The clamping frame 3 has 7 sets of spaced limiting grooves 4 and V-shaped grooves 5 facing inward.

[0027] The flexible bearing housing 2 is made of metal sheet; the clamping frame 3 is made of thermoplastic polymer POM, PBT or PA; and the cylindrical needle roller 1 is a cylindrical metal needle roller.

[0028] respectively adopt as Figure 2 The set of card slots shown are: card slot A10 and card slot B8.

[0029] Since the angle of the V-groove 5 can vary, two flexible bearing belts 7 with different bending radii are respectively attached to the arc-shaped grooves of the two types of card holders.

[0030] Example 2:

[0031] like Figure 2The different card holders A10 and B8 are shown; the upper side of the card holder has a downwardly recessed arc-shaped groove and two or more positioning screw holes 6 located next to it; the arc-shaped groove on card holder A10 has a different arc radius than the card holder on card holder B8; the positioning screw holes 6 facilitate the insertion of positioning screws.

[0032] In addition, adopting such Figure 1 The two flexible bearing strips 7 shown are arranged in a circular groove on the card holder A10, which can movably fit a bent bearing strip 7, and a circular groove on the card holder B8, which can movably fit a bearing strip 7 with a different bending radius.

[0033] The bearing belt 7 has a flexible bearing housing 2 and a clamping frame 3 located on the inner side. The clamping frame 3 has 7 parallel rigid needle rollers clamped by the clamping frame 3.

[0034] The flexible bearing housing 2 is made of PET plastic sheet; the clamping frame 3 is made of thermoplastic polymer PA66; the two are bonded together.

[0035] When bearing band 7 is placed in the arc-shaped groove, it is heated at a temperature of 70-140℃ to change its curvature so as to fit the arc-shaped groove with different arc radii.

Claims

1. A deformable bearing belt for a sorting test device, the bearing belt (7) having a flexible bearing housing (2) and a clamping frame (3) that is attached or bonded to its inner surface; the clamping frame (3) has a plurality of parallel-arranged rigid cylindrical needle rollers (1) clamped by the clamping frame (3), the axial direction of the rigid cylindrical needle rollers (1) being perpendicular to the plane containing the end face of the bearing belt (7); characterized in that: The flexible bearing housing can be bent and deformed to one side, so that the bearing belt is in a straight state or an arc shape with different radii, so as to cooperate and connect with rotating shafts of different diameters or arc-shaped grooves; the clamping frame (3) has multiple limiting grooves (4) and V-shaped grooves arranged at intervals facing the center of the arc; a cylindrical metal needle roller is placed in each limiting groove (4); each V-shaped groove opens towards the center of the arc, and the included angle of the V-shaped groove (5) can be changed so as to cause the clamping frame (3) to bend and change the curvature; The clamping frame (3) is made of thermoplastic polymer POM, PBT or PA. When the clamping frame is heated to above the glass transition temperature and below the pyrolysis temperature, it can bend, thereby causing a change in the radius of curvature of the bearing belt, so that the bearing belt becomes a straight state or an arc shape with different radii.

2. The deformable bearing belt for the sorting and testing equipment as described in claim 1, characterized in that: The flexible bearing housing (2) is made of plastic sheet or metal sheet; the cylindrical needle roller (1) is a cylindrical metal needle roller.

3. The deformable bearing belt for the sorting and testing equipment as described in claim 1 or 2, characterized in that: The clamping frame (3) is made of PA66. When the bearing belt (7) is placed in the arc-shaped groove, the clamping frame (3) is heated at a temperature of 70-140°C, which is higher than the glass transition temperature and lower than the pyrolysis temperature, so that it bends and changes the curvature to suit arc-shaped grooves with different arc radii.

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