Automatic punching mechanism for thrust needle roller bearing cage

Abstract

The utility model discloses a kind of automatic punching mechanism of thrust needle bearing retainer, lower die holder;Lower die, the lower die is fixedly connected on the upper end surface of the lower die holder;Lower die core, the lower die core is fixedly connected on the upper end surface of the lower die holder, the lower die is around the outside of the lower die core, and it is equipped with spacing between the lower die core, annular groove is formed, the annular groove is compatible with the retainer to be punched position;The horizontal height of the lower die and lower die core is consistent in annular groove inside and outside two sides, forming retainer punching station;The lower die core top end is equipped with the positioning boss compatible with the retainer inner hole;Punching assembly, the punching assembly is located above the annular groove;Upper die holder, the punching assembly is detachably fixed in the lower end surface of the upper die holder;The utility model is through the cooperative action of inside and outside double positioning mode, significantly improve the positioning accuracy and stability of workpiece in punching process, guarantee the consistency of punching position degree.

Description

Technical Field

[0001] This utility model relates to the field of bearing processing machinery technology, specifically to an automatic punching mechanism for a thrust needle roller bearing cage. Background Technology

[0002] Thrust needle roller bearings are a type of rolling bearing specifically designed to withstand axial loads. Their rolling elements are slender needle rollers, and they are characterized by high load-bearing capacity, compact structure, and light weight. The cage is a key component of a thrust needle roller bearing; its main function is to separate and hold the needle rollers in the correct position, ensuring that the load is evenly distributed and that the needle rollers roll smoothly during bearing operation, preventing them from colliding and rubbing against each other.

[0003] The existing thrust needle roller bearing cage stamping mechanism generally suffers from the following technical problems: First, insufficient positioning accuracy. Traditional structures often rely on simple stops or sleeves for positioning, which are easily affected by feeding errors and vibrations, resulting in large deviations in punching position and affecting product consistency. Second, low automation integration. The processes of feeding, positioning, punching, unloading, and unloading are not well connected, often requiring manual assistance or the use of multiple independent machines, resulting in low production efficiency and increased labor intensity. Third, difficulty in unloading. After punching, the workpiece is easily stuck in the lower die or punch. Existing ejection mechanisms are insufficient in force or have uncoordinated movements, which can easily cause workpiece deformation or scratches.

[0004] To address the aforementioned problems, it is necessary to develop an automatic punching mechanism for the retainer of a thrust needle roller bearing. Utility Model Content

[0005] The purpose of this invention is to provide an automatic punching mechanism for the cage of a thrust needle roller bearing, overcoming the aforementioned defects in the prior art.

[0006] The technical solution to achieve the purpose of this utility model is: an automatic punching mechanism for a thrust needle roller bearing cage, used for punching holes in the cage, including...

[0007] Lower mold base;

[0008] The lower mold is fixedly connected to the upper end face of the lower mold base;

[0009] The lower die core is fixedly connected to the upper end face of the lower die base. The lower die is arranged around the outside of the lower die core and a gap is provided between the lower die core to form an annular groove. The annular groove is adapted to the position of the cage to be punched. The lower die and the lower die core are at the same horizontal height on the inner and outer sides of the annular groove to form the cage punching position. The top of the lower die core is provided with a positioning boss that is adapted to the inner hole of the cage.

[0010] A punching assembly, located above the annular groove;

[0011] The upper die base, wherein the punching assembly is detachably fixed to the lower end face of the upper die base.

[0012] In a preferred embodiment, a material ejection assembly is also connected below the upper die holder, and the material ejection assembly can move up and down along the movement direction of the punching assembly.

[0013] In a preferred embodiment, the punching assembly includes a plurality of punching cutters, and the ejection assembly includes an ejection slider and a telescopic drive device; the ejection slider is disposed within the space formed by the plurality of punching cutters, and the ejection slider is provided with a plurality of guide holes that cooperate with the plurality of punching cutters; one end of the telescopic drive device is fixed on the upper die base, and the other end is fixedly connected to the ejection slider, and the telescopic drive device controls the ejection slider to move up and down along the punching cutters.

[0014] In a preferred embodiment, an upper mold base plate is fixed below the upper mold base, an upper mold fixing plate is fixed below the upper mold base plate, and an installation station for the punching tool is provided between the upper mold fixing plate and the upper mold base plate.

[0015] In a preferred embodiment, the telescopic drive device is a cylinder, one end of which is fixed on the upper mold base, and the output end passes through the upper mold fixing plate and the upper mold bottom plate and is connected to the ejection slider.

[0016] In a preferred embodiment, the top surface of the positioning boss is provided with a rounded chamfer.

[0017] In a preferred embodiment, a lower mold base plate is fixedly connected to the upper end face of the lower mold base, and a lower mold connecting seat is fixedly connected to the upper end face of the lower mold base plate; the lower mold and the lower mold core are respectively fixed to the upper end face of the lower mold connecting seat.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects:

[0019] (1) The lower die of this utility model is fixed on the lower die base to form a stable punching support platform; the annular groove formed between the lower die and the lower die core precisely corresponds to the punching area of ​​the retainer, realizing circumferential positioning of the workpiece; the positioning boss at the top of the lower die core is inserted into the inner hole of the retainer for radial positioning. The internal and external dual positioning methods work together to significantly improve the positioning accuracy and stability of the workpiece during the punching process and ensure the consistency of the punching position.

[0020] (2) The punching assembly of this utility model is located above the annular groove, which can accurately align with the position to be punched for processing; the upper die base and the punching assembly are detachably connected, which facilitates the quick replacement and maintenance of the punching assembly, especially suitable for the production switching of different specifications of cages, improving the versatility and maintenance efficiency of the equipment.

[0021] (3) The material ejection assembly of this utility model is located below the upper die base and can move up and down with the punching action. When the upper die returns, it can promptly eject the retainer after punching from the lower die, effectively preventing the workpiece from jamming, ensuring the smooth operation of continuous automated production, and improving production efficiency.

[0022] (4) The present invention can complete multi-hole punching in one go with multiple punching tools, which greatly improves processing efficiency; the ejector slide is located in the space surrounded by multiple punching tools, with a compact structure and full utilization of space; the guide through hole cooperates with the punching tool to ensure that the ejector slide moves smoothly and without deviation; the telescopic drive device independently controls the ejector slide action, so that it can accurately push out the workpiece after punching, ensuring reliable ejection and avoiding damage to the product.

[0023] (5) The layered structure design of the upper die base plate and the upper die fixing plate of this utility model provides a stable installation foundation and a precise installation position for the punching tool, enhances the overall rigidity and assembly accuracy of the upper die system, and helps to improve the stability of punching quality.

[0024] (6) This utility model uses a cylinder as a telescopic drive device, which has a fast response speed, stable operation, precise control, and is easy to integrate with an automation system; the cylinder output end passes through the upper mold fixing plate and the bottom plate and is connected to the ejector slider. The structure is reasonable, the installation and maintenance are convenient, and the ejector action is guaranteed to be reliable.

[0025] (7) The top surface of the positioning boss of this utility model is provided with a rounded chamfer, which makes it easy for the cage to be smoothly fitted into the positioning boss during the feeding process, playing a good guiding role, avoiding bumps or jamming caused by sharp edges, improving the smoothness and efficiency of feeding, and protecting the surface quality of the workpiece. Attached Figure Description

[0026] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0027] Figure 1 This is a cross-sectional view of the present invention.

[0028] Figure 2 A cross-sectional view of the cage blank.

[0029] Figure 3 A cross-sectional view of the cage after molding.

[0030] The reference numerals in the attached diagram are as follows: 1. Lower die base; 2. Lower die; 3. Lower die core; 3-1. Positioning boss; 4. Punching assembly; 4-1. Punching tool; 5. Upper die base; 6. Unloading assembly; 6-1. Unloading slider; 6-2. Telescopic drive device; 7. Upper die base plate; 8. Upper die fixing plate; 9. Lower die base plate; 10. Lower die connecting seat; 100. Retainer. Detailed Implementation

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0037] (Example 1)

[0038] See Figure 1 , 2 And 3, an automatic punching mechanism for a thrust needle roller bearing cage, used for punching the cage 100, in such a way as... Figure 2 The cage 100 shown has punched holes to form, as shown Figure 3 The cage shown.

[0039] The device includes: a lower die base 1; a lower die 2, which is fixedly connected to the upper surface of the lower die base 1; a lower die core 3, which is fixedly connected to the upper surface of the lower die base 1, with the lower die 2 surrounding the lower die core 3 and having a gap between them to form an annular groove, the annular groove being adapted to the punching position of the retainer 100; the lower die 2 and the lower die core 3 having the same horizontal height on both sides of the annular groove, forming a punching position for the retainer 100; a positioning boss 3-1 at the top of the lower die core 3 that is adapted to the inner hole of the retainer 100; a rounded chamfer on the top surface of the positioning boss 3-1; a punching assembly 4, which is located above the annular groove; and an upper die base 5, with the punching assembly 4 detachably fixed to the lower surface of the upper die base 5. The upper end face of the mold base 1 is fixedly connected to the lower mold base plate 9, and the upper end face of the lower mold base plate 9 is fixedly connected to the lower mold connecting seat 10; the lower mold 2 and the lower mold core 3 are respectively fixed to the upper end face of the lower mold connecting seat 10.

[0040] The punching assembly 4 includes multiple punching cutters 4-1, and the ejection assembly 6 includes an ejection slider 6-1 and a telescopic drive device 6-2. The ejection slider 6-1 is disposed in the space formed by the multiple punching cutters 4-1, and the ejection slider 6-1 is provided with multiple guide holes that cooperate with the multiple punching cutters 4-1. One end of the telescopic drive device 6-2 is fixed on the upper die base 5, and the other end is fixedly connected to the ejection slider 6-1. The telescopic drive device 6-2 controls the ejection slider 6-1 to move up and down along the punching cutters 4-1.

[0041] An upper mold base plate 7 is fixed below the upper mold base 5, and an upper mold fixing plate 8 is fixed to the lower end face of the upper mold base plate 7. An installation station for the punching tool 4-1 is provided between the upper mold fixing plate 8 and the upper mold base plate 7. The telescopic drive device 6-2 is a cylinder. One end of the cylinder is fixed on the upper mold base 5, and the output end passes through the upper mold fixing plate 8 and the upper mold base plate 7 and is connected to the ejector slider 6-1.

[0042] In this embodiment, the lower die is fixed on the lower die base to form a stable punching support platform; the annular groove formed between the lower die and the lower die core precisely corresponds to the punching area of ​​the retainer, realizing circumferential positioning of the workpiece; the positioning boss at the top of the lower die core is inserted into the inner hole of the retainer for radial positioning. The dual positioning methods inside and outside work together to significantly improve the positioning accuracy and stability of the workpiece during the punching process and ensure the consistency of the punching position.

[0043] The workflow of this embodiment is as follows: the thrust needle roller bearing cage is poured into the automatic feeder, the automatic feeder starts working, and the cage is pushed onto the lower die of the automatic punching machine. Under the limit of the positioning boss, both radial and axial constraints are achieved; the upper die is pressed down, the upper cutter punches holes, after punching is completed, the upper die is raised, the ejector block pushes out the punched cage, and the air pipe blows the cage into the unloading channel.

[0044] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic punching mechanism for a thrust needle roller bearing cage, used for punching holes in the cage (100), characterized in that: include Lower mold base (1); The lower mold (2) is fixedly connected to the upper end face of the lower mold base (1); The lower die core (3) is fixedly connected to the upper end face of the lower die base (1). The lower die (2) is arranged around the outside of the lower die core (3) and there is a gap between it and the lower die core (3) to form an annular groove. The annular groove is adapted to the punching position of the retainer (100). The lower die (2) and the lower die core (3) are at the same horizontal height on the inner and outer sides of the annular groove to form the punching position of the retainer (100). The top of the lower die core (3) is provided with a positioning boss (3-1) adapted to the inner hole of the retainer (100). A punching assembly (4) is located above the annular groove; The upper die base (5) is provided, and the punching assembly (4) is detachably fixed to the lower end face of the upper die base (5).

2. The automatic punching mechanism for a thrust needle roller bearing cage according to claim 1, characterized in that: The upper mold base (5) is also connected to a material ejection assembly (6), which can move up and down along the movement direction of the punching assembly (4).

3. The automatic punching mechanism for a thrust needle roller bearing cage according to claim 2, characterized in that: The punching assembly (4) includes multiple punching cutters (4-1), and the ejection assembly (6) includes an ejection slider (6-1) and a telescopic drive device (6-2). The ejection slider (6-1) is disposed in the space formed by the multiple punching cutters (4-1), and the ejection slider (6-1) is provided with multiple guide holes that cooperate with the multiple punching cutters (4-1). One end of the telescopic drive device (6-2) is fixed on the upper die base (5), and the other end is fixedly connected to the ejection slider (6-1). The telescopic drive device (6-2) controls the ejection slider (6-1) to move up and down along the punching cutters (4-1).

4. The automatic punching mechanism for a thrust needle roller bearing cage according to claim 3, characterized in that: An upper mold base plate (7) is fixed below the upper mold base (5), and an upper mold fixing plate (8) is fixed below the upper mold base plate (7). An installation station for the punching tool (4-1) is provided between the upper mold fixing plate (8) and the upper mold base plate (7).

5. The automatic punching mechanism for a thrust needle roller bearing cage according to claim 4, characterized in that: The telescopic drive device (6-2) is a cylinder. One end of the cylinder is fixed on the upper mold base (5), and the output end passes through the upper mold fixing plate (8) and the upper mold bottom plate (7) and is connected to the ejector slider (6-1).

6. The automatic punching mechanism for a thrust needle roller bearing cage according to claim 1, characterized in that: The top surface of the positioning boss (3-1) is provided with a rounded chamfer.

7. The automatic punching mechanism for a thrust needle roller bearing cage according to claim 1, characterized in that: The lower mold base (1) is fixedly connected to the upper end face of the lower mold base (1), and the lower mold connecting seat (10) is fixedly connected to the upper end face of the lower mold base (9); the lower mold (2) and the lower mold core (3) are respectively fixed to the upper end face of the lower mold connecting seat (10).

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