An efficient assembly device for a thrust bearing

Abstract

The present invention relates to the technical field of assembly devices, and particularly relates to an efficient assembly device for a thrust bearing, which includes a press-fitting outer sleeve, a pressing rod located in the middle above the press-fitting outer sleeve, and the pressing rod moves away from or close to the press-fitting outer sleeve through a cylinder; it further includes: a positioning main shaft fixedly arranged at the inner bottom of the press-fitting outer sleeve; a main shaft sleeve movably arranged in the middle above the inner side of the press-fitting outer sleeve; the components of the thrust bearing are assembled by the extrusion force between the pressing rod and the main shaft sleeve. At the same time, an elastic resetting member connected to the main shaft sleeve is arranged in the press-fitting outer sleeve. Through the action of unloading force, when the pressing rod rises, the cage lock in the pressing process of the thrust bearing can lock the gasket, thus playing a good guiding role, further improving the assembly efficiency and finished product rate of the thrust bearing, reducing the damage to the lock of the plastic cage during manual assembly, and enabling the lock of the bearing plastic cage to achieve the assembly purpose with a small deformation.

Description

Technical Field

[0001] The present invention relates to the technical field of assembly devices, and in particular to an efficient assembly device for thrust bearings. Background Art

[0002] A thrust bearing is a special bearing used to specifically bear axial force. During the assembly process of the thrust bearing, the following problems usually exist in the following patents. Refer to the automatic detection and assembly device for a thrust bearing disclosed in the publication number CN114994035A. The device includes: a thrust bearing camera detection device, which is used to identify and record the recognition result of the bearing upper support piece when the bearing assembly is lifted into the camera detection workbench by the lifting servo motor. A thrust bearing height detection device is used to detect the overall height of the bearing assembly, and by automatically identifying the height, it is judged whether the assembly sequence of the bearing assembly is correct. Although this patent can achieve high assembly accuracy and high assembly efficiency of the thrust bearing, there is still a problem that the lock of the plastic cage is easily damaged, which affects the deformation range of the lock of the bearing plastic cage. Therefore, during the long-term R & D and testing process, the inventor found that: in the prior art, non-standard sized thrust bearings are often encountered. For some thrust bearings with a large outer diameter and a small inner diameter, due to the limitation of their structural dimensions, the cage has a thin thickness and a large outer diameter, and is prone to deformation. During the press-fitting process, there is no accurate positioning device. During the pressure application and assembly process of the thrust bearing, it is difficult for the cage lock to lock the gasket, and the lack of guidance causes the deformation of the lock of the bearing plastic cage to become larger. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an efficient assembly device for thrust bearings to solve the problem that during the pressure application and assembly process of the thrust bearing, it is difficult for the cage lock to lock the gasket, and the lack of guidance causes the deformation of the lock of the bearing plastic cage to become larger.

[0004] Based on the above purpose, the present invention provides an efficient assembly device for thrust bearings, including: a press-fitting outer sleeve, a pressing rod located in the middle above the press-fitting outer sleeve, and the pressing rod moves away from or close to the press-fitting outer sleeve through a cylinder; further including: a positioning main shaft fixedly arranged at the inner bottom of the press-fitting outer sleeve; a main shaft sleeve movably arranged in the middle above the inner side of the press-fitting outer sleeve, and the main shaft sleeve is sleeved on the periphery of the positioning main shaft; an elastic resetting member is fixedly installed in the sealed accommodation space formed between the main shaft sleeve and the positioning main shaft, and the main shaft sleeve moves up and down on the periphery of the positioning main shaft under the cooperation of the elastic resetting member and the pressure of the pressing rod;

[0005] Among them, the press-fitting outer sleeve is a trapezoidal structure with upper and lower openings and a hollow interior. The top of the positioning main shaft extends out of the top of the press-fitting outer sleeve. An assembly and forming space for placing a thrust bearing is formed between the top end of the outer periphery of the main shaft sleeve, the top of the inner side of the press-fitting outer sleeve, and the outer periphery of the positioning main shaft. The fittings of the thrust bearing are placed in the assembly and forming space. The pressure rod is pressed by a cylinder, and in cooperation with the restoring force of the elastic resetting member of the main shaft sleeve, the thrust bearing is assembled into one body.

[0006] Preferably, a limiting backing plate is fixedly installed around the top of the positioning main shaft. The limiting backing plate is used to limit the position where the main shaft sleeve moves to the bottom of the accommodating space. The elastic resetting member is arranged between the positioning main shaft and the limiting backing plate.

[0007] Preferably, the elastic resetting member is a linear spring. A clamping groove matching the linear spring is opened at the bottom of the main shaft sleeve. The top of the linear spring is clamped inside the clamping groove.

[0008] Preferably, the outer diameter dimension above the upper part of the pressure rod is not less than the outer diameter dimension below the lower part of the pressure rod, and the outer diameter dimension below the lower part of the pressure rod matches the assembly and forming space. A groove is opened at the center of the bottom of the pressure rod. When the pressure rod is pressed down into the assembly and forming space, the positioning main shaft extends into the groove.

[0009] Preferably, the outer periphery of the press-fitting outer sleeve is in a trapezoidal ring structure, and the diameter dimension of the top of the press-fitting outer sleeve is not less than the outer diameter of the pressure rod. The pressure rod and the press-fitting outer sleeve are arranged coaxially.

[0010] Preferably, the sealed accommodating space formed between the main shaft sleeve and the positioning main shaft is in a stepped shaft structure. The main shaft sleeve is in a trapezoidal structure and matches the accommodating space.

[0011] Preferably, the positioning main shaft further includes: at least three stop screws, which are threadedly inserted into the periphery of the middle part of the positioning main shaft and extend into the press-fitting outer sleeve. The positioning main shaft is positioned in the press-fitting outer sleeve through the stop screws.

[0012] Preferably, a part of the top of the positioning main shaft extends out of the outer periphery of the press-fitting outer sleeve.

[0013] The beneficial effects of the present invention: The components of the thrust bearing are assembled by the extrusion force between the pressure rod and the main shaft sleeve. At the same time, an elastic resetting member connected to the main shaft sleeve is arranged in the press-fitting outer sleeve. Through the unloading effect, when the pressure rod rises, the cage lock in the process of pressing and assembling the thrust bearing can lock the gasket, thus playing a good guiding role, further improving the assembly efficiency and the finished product rate of the thrust bearing, reducing the damage to the lock of the plastic cage during manual assembly, and enabling the lock of the bearing plastic cage to achieve the assembly purpose with a smaller deformation. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 Schematic diagram of the overall half-section structure of the present invention;

[0016] Figure 2 Schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 3 Schematic diagram of the front view structure of the present invention;

[0018] Figure 4 Schematic diagram of the installation position structure of the present invention;

[0019] Figure 5 Schematic diagram of the unfolded installation position structure of the present invention;

[0020] Figure 6 Schematic diagram of the partial installation position structure of the present invention;

[0021] Figure 7 Schematic diagram of the unfolded partial installation position structure of the present invention.

[0022] The labels in the figure are: 1, pressure bar; 2, press-fitting outer sleeve; 3, main shaft sleeve; 4, linear spring; 5, limit backing plate; 6, positioning main shaft. Specific embodiments

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in combination with specific embodiments.

[0024] Embodiment 1:

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown in the figure, a high-efficiency assembly device for a thrust bearing includes: a press-fitting outer sleeve 2, a press-feeding rod 1 located in the middle above the press-fitting outer sleeve 2. The press-feeding rod 1 moves away from or close to the press-fitting outer sleeve 2 through a cylinder. The periphery of the press-fitting outer sleeve 2 is in a trapezoidal ring structure, and the diameter dimension of the top of the press-fitting outer sleeve 2 is not less than the outer diameter dimension of the press-feeding rod 1. The press-feeding rod 1 and the press-fitting outer sleeve 2 are arranged coaxially. It further includes: a positioning main shaft 6 fixedly arranged at the inner bottom of the press-fitting outer sleeve 2, and a part of the top of the positioning main shaft 6 extends out of the periphery of the press-fitting outer sleeve 2; a main shaft sleeve 3 movably arranged in the middle above the inner side of the press-fitting outer sleeve 2, and the main shaft sleeve 3 is sleeved on the periphery of the positioning main shaft 6. An elastic resetting member is fixedly installed in the sealed accommodation space formed between the main shaft sleeve 3 and the positioning main shaft 6 through bolts. The sealed accommodation space formed between the main shaft sleeve 3 and the positioning main shaft 6 is in a stepped shaft structure. The main shaft sleeve 3 is in a trapezoidal structure and matches the accommodation space. The main shaft sleeve 3 moves up and down on the periphery of the positioning main shaft 6 under the cooperation of the elastic resetting member and the pressure of the press-feeding rod 1.

[0026] Among them, the press-fitting outer sleeve 2 is a trapezoidal structure with upper and lower openings and is hollow. The top of the positioning main shaft 6 extends out of the top of the press-fitting outer sleeve 2. An assembly forming space for placing the thrust bearing is formed between the top end of the periphery of the main shaft sleeve 3, the inner top of the press-fitting outer sleeve 2, and the periphery of the positioning main shaft 6. The fittings of the thrust bearing are placed in the assembly forming space. The cylinder applies pressure to the press-feeding rod 1, and in cooperation with the restoring force of the elastic resetting member of the main shaft sleeve 3, the thrust bearing is assembled into one body. The outer diameter dimension of the upper part of the periphery of the press-feeding rod 1 is not less than the outer diameter dimension of the lower part of the periphery of the press-feeding rod 1, and the outer diameter dimension of the lower part of the periphery of the press-feeding rod 1 matches the assembly forming space. A groove is opened at the center of the bottom of the press-feeding rod 1. When the press-feeding rod 1 is pressed down into the assembly forming space, the positioning main shaft 6 extends into the groove.

[0027] Among them, the model dimensions of the thrust bearing assembly device are designed into different size specifications, which can position different models of plastic cages according to their inner hole dimensions, so as to achieve the purpose of assembling general models. By controlling the press-feeding rod 1 with a cylinder, the pressure can be conveniently adjusted for assembly. Furthermore, when assembling different structural dimensions, the tooling cost does not need to be increased. By arranging a main shaft sleeve 3 and an elastic resetting member cooperating with the main shaft sleeve 3 in the press-fitting outer sleeve 2, before assembly, the main shaft sleeve 3 floats to the highest point to facilitate the positioning and placement of the thrust bearing parts. During assembly, after the press-feeding rod 1 applies pressure, the main shaft sleeve 3 moves down to the limit backing plate 5, and the cage lock locks the gasket, that is, the parts of the thrust bearing are positioned at the top of the main shaft sleeve 3. After the pressure is removed by the cylinder, the main shaft sleeve 3 floats up to the highest end, and the assembled thrust bearing is taken out. Through inner and outer diameter positioning, the cage lock has good guidance, and the damage of the cage lock is also reduced, improving the assembly efficiency and the finished product rate.

[0028] Embodiment Two:

[0029] The difference from the previous embodiment is that a limit backing plate 5 is fixedly installed around the top of the positioning main shaft 6 by bolts. The limit backing plate 5 is used to limit the position of the main shaft sleeve 3 moving to the bottom of the accommodating space, and the elastic resetting member is arranged between the positioning main shaft 6 and the limit backing plate 5; the elastic resetting member is a linear spring 4, and a slot matching the linear spring 4 is opened at the bottom of the main shaft sleeve 3, and the top of the linear spring 4 is clamped inside the slot.

[0030] The positioning main shaft 6 further includes: at least three stop screws, which are threadedly inserted around the middle of the positioning main shaft 6 and extend into the press-fitting outer sleeve 2. The positioning main shaft 6 is positioned in the press-fitting outer sleeve 2 through the stop screws, so that the connection between the press-fitting outer sleeve 2 and the positioning main shaft 6 is more firm and can play a stabilizing role when installed on the workbench.

[0031] Working principle: When in use, the components of the thrust bearing are placed on the tops of the press-fitting outer sleeve 2 and the main shaft sleeve 3. The formed assembly molding space can position the components of the thrust bearing. The cylinder drives the pressure rod 1 to apply a downward pressure. The components of the thrust bearing are assembled through the extrusion force between the pressure rod 1 and the main shaft sleeve 3. At the same time, a linear spring 4 connected to the main shaft sleeve 3 is arranged in the press-fitting outer sleeve 2. Through the unloading effect, when the pressure rod 1 rises, the cage lock in the thrust bearing pressing and assembling process can lock the gasket, thus playing a good guiding role, further improving the assembly efficiency and the finished product rate of the thrust bearing. Compared with manual assembly, the efficiency is improved, and the damage to the lock of the plastic cage in manual assembly is reduced, so that the lock of the bearing plastic cage can achieve the assembly purpose with a smaller deformation.

Claims

1. An efficient assembly device for a thrust bearing, comprising: The press-fitting outer sleeve (2), the pressure rod (1) located in the middle above the press-fitting outer sleeve (2), and the pressure rod (1) moves away from or close to the press-fitting outer sleeve (2) through a cylinder; it is characterized in that it further includes: The positioning main shaft (6), fixedly arranged at the inner bottom of the press-fitting outer sleeve (2); The main shaft sleeve (3), movably arranged in the middle above the inner side of the press-fitting outer sleeve (2), and the main shaft sleeve (3) is sleeved on the periphery of the positioning main shaft (6); An elastic reset member is fixedly installed in the sealed accommodation space formed between the main shaft sleeve (3) and the positioning main shaft (6), and the main shaft sleeve (3) moves up and down on the periphery of the positioning main shaft (6) under the pressure cooperation of the elastic reset member and the pressure rod (1); Among them, the press-fitting outer sleeve (2) is a trapezoidal structure with upper and lower openings and is hollow, the top of the positioning main shaft (6) extends out of the top of the press-fitting outer sleeve (2), and an assembly forming space for placing a thrust bearing is formed between the top end of the periphery of the main shaft sleeve (3), the inner top of the press-fitting outer sleeve (2), and the periphery of the positioning main shaft (6). The accessories of the thrust bearing are placed in the assembly forming space. By applying pressure to the pressure rod (1) through a cylinder and cooperating with the restoring force of the elastic reset member of the main shaft sleeve (3), the thrust bearing is assembled into one body.

2. The efficient assembly device for a thrust bearing according to claim 1, characterized in that, A limit backing plate (5) is fixedly installed around the top of the positioning main shaft (6), and the limit backing plate (5) is used to limit the position where the main shaft sleeve (3) moves to the bottom of the accommodation space, and the elastic reset member is arranged between the positioning main shaft (6) and the limit backing plate (5).

3. The efficient assembly device for a thrust bearing according to claim 2, characterized in that, The elastic reset member is a linear spring (4), a clamping groove matching the linear spring (4) is opened at the bottom of the main shaft sleeve (3), and the top of the linear spring (4) is clamped inside the clamping groove.

4. The efficient assembly device for a thrust bearing according to claim 1, characterized in that, The outer diameter dimension above the periphery of the pressure rod (1) is not less than the outer diameter dimension below the periphery of the pressure rod (1), and the outer diameter dimension below the periphery of the pressure rod (1) matches the assembly forming space. A groove is opened at the center of the bottom of the pressure rod (1). When the pressure rod is pressed down into the assembly forming space, the positioning main shaft (6) extends into the groove.

5. The efficient assembly device for a thrust bearing according to claim 1, characterized in that, The periphery of the press-fitting outer sleeve (2) is in a trapezoidal ring structure, and the diameter dimension of the top of the press-fitting outer sleeve (2) is not less than the outer diameter dimension of the pressure rod (1), and the pressure rod (1) and the press-fitting outer sleeve (2) are arranged coaxially.

6. The efficient assembly device for a thrust bearing according to claim 1, characterized in that, The sealed accommodation space formed between the main shaft sleeve (3) and the positioning main shaft (6) is in a stepped shaft type structure, the main shaft sleeve (3) is in a trapezoidal structure, and the main shaft sleeve (3) matches the accommodation space.

7. The efficient assembly device for a thrust bearing according to claim 1, characterized in that, The positioning main shaft (6) further includes: at least three stop screws, threadedly inserted into the periphery of the middle of the positioning main shaft (6) and extending into the press-fitting outer sleeve (2), and the positioning main shaft (6) is positioned in the press-fitting outer sleeve (2) through the stop screws.

8. The efficient assembly device for a thrust bearing according to claim 1, characterized in that, A part of the top of the positioning main shaft (6) extends out of the periphery of the press-fitting outer sleeve (2).

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