Automatic preloading spring device for driving shaft bearing bracket

Abstract

The present application relates to the technical field of driving shaft production, and provides an automatic pre-assembly clamp spring device for a driving shaft bearing frame, which realizes vertical automatic storage through a clamp spring storage rod, cooperates with a pushing mechanism for automatic feeding, a blocking mechanism for automatic limiting, and a pressing mechanism for automatic pressing, and does not need manual intervention for alignment throughout the process; meanwhile, a double placement rack is adopted to rotate workstations, pressing operation is synchronized with manual material changing, waiting time for equipment shutdown is completely eliminated, production rhythm and overall productivity are greatly improved, and the device is suitable for mass production on an assembly line. The device is equipped with a track guide, a clamp slot for accurate positioning, and a bottom pocket blocking multiple limiting structure, and the clamp spring is constrained throughout the process of conveying, positioning and pressing, and displacement throughout the process of pressing; the center extension rod of the pressing structure first contacts the small pressing head, so that the clamp spring cannot fall off, and then the outer ring pressing claw is pressed, the inner and outer rings of the clamp spring are uniformly stressed, the vertical pressing is not skewed, the coaxiality of pre-assembly is stable, and the product yield is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of drive shaft manufacturing technology, and in particular to an automatic pre-installation device for drive shaft bearing brackets. Background Technology

[0002] Snap rings, also known as retaining rings or retaining circlips, are commonly used axial limiting parts in mechanical assembly, widely used in the assembly of drive shaft bearing housings to prevent bearings from detaching from the shaft and ensure the reliable operation of the drive shaft assembly. During the assembly of drive shaft bearing housings, the snap rings need to be pre-assembled onto a matching small pressure head before being pressed into the bearing housing slot. Snap rings are small, have low rigidity, and are easily deformed. Traditional processing methods rely on manual handling using tweezers to pick up and place the snap rings and manually press them onto the small pressure head. Existing methods have many drawbacks: Manual material loading has poor positioning accuracy, and the circlip is prone to tilting or flying off, resulting in a low assembly qualification rate; repetitive manual operation is labor-intensive, causing hand fatigue during long-term work, limiting production capacity, and is not conducive to large-scale continuous production; the lack of positioning detection and limiting material blocking structure means that the circlip conveyor is not limitless, and it is very easy to deviate and misalign during the pushing process; small pressure heads require frequent loading and unloading, and the downtime for material change at a single station is time-consuming, making it difficult to improve the production cycle.

[0003] Currently, most conventional snap ring pressing equipment on the market is designed for the final pressing of workpieces. There is a lack of dedicated pre-assembly equipment that can be adapted to the pre-assembly process of bearing brackets, has interchangeable material supply, precise material stop and limit, and vertical material storage in the snap ring hopper. It cannot meet the refined requirements of drive shaft bearing bracket pre-assembly. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an automatic pre-installation device for a drive shaft bearing bracket, which solves the problems in the background art.

[0005] To achieve the above objectives, the present invention provides an automatic pre-installation device for snap rings on a drive shaft bearing bracket, comprising a base plate, a mounting frame on the top of the base plate, a pushing mechanism on the rear side of the top of the mounting frame, a snap ring storage rod on the top of the mounting frame in front of the pushing mechanism, a mounting plate at the front end of the top of the mounting frame, a pressing mechanism at the top front of the mounting plate, and a pressure head at the bottom output end of the pressing mechanism; a support plate extending from the bottom front of the mounting frame, a placement mechanism on the top of the support plate, the placement mechanism including two placement frames that alternately move to below the pressure head, and a small pressure head placed in the placement frame; and a material blocking mechanism at the bottom front of the mounting plate. The pushing mechanism pushes the snap ring at the bottom of the snap ring storage rod forward to below the pressure head. The blocking mechanism moves upward to limit and block the snap ring, and the snap ring falls onto the small pressure head. The pressure head presses the snap ring down and pre-presses it onto the small pressure head.

[0006] Preferably, the pushing mechanism includes a pushing cylinder disposed at the rear end of the top of the mounting frame, a pushing vertical plate fixedly connected to the front output end of the pushing cylinder, a receiving horizontal plate connected to the front side of the pushing vertical plate, and a retaining groove for a matching retaining spring provided at the front end of the receiving horizontal plate.

[0007] Preferably, the top of the mounting frame is provided with a track frame located in front of the pushing cylinder, and the top of the track frame is provided with a front and rear moving rail, with the receiving cross plate located in the middle of the front and rear moving rail and moving back and forth.

[0008] Preferably, the material blocking mechanism includes a material blocking cylinder disposed at the bottom front side of the mounting plate, and a material blocking head is disposed at the top output end of the material blocking cylinder.

[0009] Preferably, the front side of the receiving plate is provided with a movable groove for the material blocking head to pass through, and the movable groove is located below the slot.

[0010] Preferably, the pressing mechanism includes a pressing cylinder disposed at the top front side of the mounting plate, a pressing block disposed at the bottom output end of the pressing cylinder, a telescopic rod disposed in the middle of the bottom of the pressing block, and pressing claws disposed around the bottom of the pressing block.

[0011] Preferably, the placement mechanism includes a push-pull cylinder disposed on the rear side of the top of the support plate, a slide plate connected to the left output end of the push-pull cylinder, a slide rail disposed on the front side of the top of the support plate, the slide plate sliding on the slide rail, and two placement racks disposed on the top of the slide plate at intervals.

[0012] Preferably, a snap ring sensor is provided at the bottom end of the snap ring storage rod on the front and rear moving rails, and the snap ring sensor faces the snap ring groove to receive the position of the snap ring on the snap ring storage rod.

[0013] Preferably, a mounting side plate is provided on one side of the mounting plate, and the top end of the snap ring storage rod is mounted on the mounting plate and the mounting side plate via a mounting block.

[0014] The beneficial effects of this invention are: This invention achieves vertical automatic material storage through a snap ring storage rod, combined with an automatic feeding mechanism, an automatic limiting mechanism, and an automatic pressing mechanism, eliminating the need for manual intervention in alignment throughout the entire process. At the same time, it adopts a dual-placement rack rotating workstation structure, allowing the pressing operation and manual material changing to be carried out simultaneously, completely eliminating equipment downtime and significantly improving production cycle and overall capacity, making it suitable for mass production lines.

[0015] The equipment is equipped with a track guide, precise slot positioning, and a bottom baffle with multiple limiting structures to constrain the displacement of the retaining spring during the entire process of conveying, positioning, and pressing. The pressing structure uses a central telescopic rod to first contact the small pressing head, ensuring that the retaining spring will not fall off, and then presses it in through the outer ring pressing claws. The inner and outer rings of the retaining spring are evenly stressed, and the vertical pressing is without deviation. This completely solves the problems of skewness, spreading, deformation, and misalignment of retaining springs when pre-installed manually. The pre-installation coaxiality is stable, and the product yield rate is significantly improved.

[0016] Equipped with snap ring sensors, the snap ring feeding status is monitored in real time, which can accurately identify abnormalities such as material shortage, jamming, and leakage. It can also be linked to the control system to realize shutdown alarm, effectively avoiding problems such as air pressure, missing loading, and tooling pressure damage, thereby reducing equipment failure rate and product scrap rate.

[0017] The snap ring storage rod adopts a double-side plate clamping and fixing structure, which has high verticality and no shaking; all moving parts are equipped with special slide rails and guide rails for guidance, and the cylinder drive runs smoothly with less jamming. The whole machine has high rigidity and low wear, making it suitable for long-term, high-intensity continuous operation in the workshop and with a long service life.

[0018] It replaces the tedious traditional manual picking, alignment, and pressing operations. Operators only need to replenish the snap rings and rotate the small pressure heads periodically, which greatly reduces the intensity of manual labor, reduces reliance on manual labor, and effectively saves production costs.

[0019] The machine features a modular design, allowing for the replacement of card slots, pressure heads, and placement racks to accommodate different sizes and models of snap rings and small pressure heads for pre-installation. This makes the equipment highly adaptable and practical. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the track frame of the present invention; Figure 3 This is a schematic diagram of the telescopic rod and the downward pressing claw of the present invention; Figure 4 This is a schematic diagram of the material blocking mechanism of the present invention.

[0022] The diagram is marked as follows: 1-Base plate, 2-Mounting bracket, 3-Spring-loaded storage rod, 4-Mounting upright plate, 5-Pressure head, 6-Support plate, 7-Placement rack, 8-Small pressure head, 9-Pushing cylinder, 10-Pushing upright plate, 11-Receiving horizontal plate, 12-Card slot, 13-Railway frame, 14-Front and rear moving rail, 15-Blocking cylinder, 16-Blocking head, 17-Moving groove, 18-Pressing cylinder, 19-Mounting side plate, 20-Telescopic rod, 21-Pressing claw, 22-Push-pull cylinder, 23-Slide plate, 24-Slide rail, 25-Spring sensor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 4 As shown, this embodiment provides an automatic pre-installation device for circlips on a drive shaft bearing bracket, including a base plate 1, a mounting frame 2 on the top of the base plate 1, a pushing mechanism on the rear side of the top of the mounting frame 2, and a circlip storage rod 3 on the top of the mounting frame 2 in front of the pushing mechanism. The circlip storage rod 3 stacks and stores multiple sets of circlips to achieve automatic continuous feeding.

[0026] The mounting frame 2 has a mounting plate 4 at the top front end, a pressing mechanism at the top front side of the mounting plate 4, and a pressing head 5 at the bottom output end of the pressing mechanism; a support plate 6 extends from the bottom front side of the mounting frame 2, and a placement mechanism is provided at the top of the support plate 6. The placement mechanism includes two placement frames 7, which move alternately to the bottom of the pressing head 5, and a small pressing head 8 is placed inside the placement frame 7; a material blocking mechanism is provided at the bottom front side of the mounting plate 4. The pushing mechanism pushes the snap ring at the bottom of the snap ring storage rod 3 forward to below the pressure head 5. The blocking mechanism moves up to limit and block the snap ring, and the snap ring falls onto the small pressure head 8. The pressure head 5 presses the snap ring down and pre-presses it onto the small pressure head 8.

[0027] The pushing mechanism includes a pushing cylinder 9 located at the top rear end of the mounting frame 2. A pushing vertical plate 10 is fixedly connected to the front output end of the pushing cylinder 9. A receiving horizontal plate 11 is connected to the front of the pushing vertical plate 10. A retaining groove 12 matching the retaining spring is provided at the front end of the receiving horizontal plate 11. The shape of the retaining groove 12 matches the outer contour of the retaining spring, ensuring that the retaining spring maintains a stable posture during the pushing process. The retaining spring at the bottom of the retaining spring storage rod 3 automatically falls into the retaining groove 12, completing the automatic material receiving.

[0028] The mounting frame 2 has a track frame 13 located on top of the pusher cylinder 9, and a front-to-back moving rail 14 is mounted on top of the track frame 13. The receiving horizontal plate 11 moves back and forth between the front-to-back moving rails 14. A snap spring sensor 25 is located at the bottom of the snap spring storage rod 3 on the front-to-back moving rails 14, and the snap spring sensor 25 faces the snap spring groove 12 to receive the snap spring on the snap spring storage rod 3. When the pusher cylinder 9 drives the pusher plate 10 to move back and forth, the receiving horizontal plate 11 slides smoothly along the front-to-back moving rails 14, ensuring that the pusher process is accurate and without deviation. The snap spring sensor 25 is installed at the end of the front-to-back moving rails 14, facing the snap spring groove 12, to detect whether the snap spring is in place in real time, providing a signal for the automated linkage of the equipment.

[0029] The material-blocking mechanism includes a material-blocking cylinder 15 located at the bottom front side of the mounting plate 4, with a material-blocking head 16 at the top output end of the material-blocking cylinder 15. A movable groove 17 for the material-blocking head 16 to pass through is provided on the front side of the receiving horizontal plate 11, located below the retaining slot 12. When the receiving horizontal plate 11 pushes the retaining spring to the position below the pressing head 5, the material-blocking cylinder 15 drives the material-blocking head 16 upwards, passing through the movable groove 17 to support and limit the bottom of the retaining spring in the retaining slot 12, preventing the retaining spring from falling or shifting, and ensuring the accuracy of the pressing alignment.

[0030] The pressing mechanism includes a pressing cylinder 18 located at the top front of the mounting plate 4. A pressing head 5 is located at the bottom output end of the pressing cylinder 18. A telescopic rod 20 is located in the middle of the bottom of the pressing head 5. Pressing claws 21 are located around the bottom of the pressing head 5. During the pressing operation, the pressing cylinder 18 drives the pressing head 5 downward. The pressing head 5 drives the telescopic rod 20 to contact the small pressing head 8 first, thus ensuring that the retaining spring will not fall off. The pressing claws 21 press down, smoothly pressing the retaining spring in the retaining groove 12 onto the top of the small pressing head 8, completing the pre-installation of the retaining spring. While the pressing claws 21 press down, the telescopic rod 20 continues to compress.

[0031] The placement mechanism includes a push-pull cylinder 22 located on the rear side of the top of the support plate 6. A slide plate 23 is connected forward from the left output end of the push-pull cylinder 22. A slide rail 24 is located on the front side of the top of the support plate 6, and the slide plate 23 slides along the slide rail 24. Two placement racks 7 are spaced apart on the top of the slide plate 23. During operation, the push-pull cylinder 22 drives the slide plate 23 to slide left and right, allowing the two placement racks 7 to alternately switch to the position below the press head 5. Once one position completes pressing, the system immediately switches to the other position for operation, achieving uninterrupted continuous production and improving production efficiency.

[0032] A mounting side plate 19 is provided on one side of the mounting plate 4. The top of the snap ring storage rod 3 is mounted on the mounting plate 4 and the mounting side plate 19 via a mounting block. This ensures that the snap ring storage rod 3 is installed firmly and with high vertical accuracy, and that the snap rings can fall smoothly one by one to discharge material without any jamming or blockage.

[0033] The stacked snap rings are manually placed inside the snap ring storage rod 3, and the small pressure heads 8 to be processed are placed in the two placement racks 7 respectively. After the equipment is started, the snap ring sensor 25 detects that the snap rings are in place, and the pusher cylinder 9 drives the receiving plate 11 to move forward, pushing the snap rings below the pressure head 5. The stop cylinder 15 drives the stop head 16 to move upward to limit the snap rings. Then the pressing cylinder 18 drives the pressure head 5 to move downward. The telescopic rod 20 first contacts the small pressure head 8, and then the pressing claw 21 presses down to accurately press the snap rings onto the small pressure head 8. After the single-station pressing is completed, the pressing mechanism and the stop mechanism are reset. The push-pull cylinder 22 drives the slide plate 23 to switch stations and perform the next round of pressing operations. The cycle is repeated to realize automated continuous pre-assembly processing.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and many other variations of different aspects of the invention as described above exist, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An automatic pre-installation device for a drive shaft bearing bracket, comprising a base plate (1), characterized in that, The base plate (1) is provided with a mounting frame (2) on the top. A pushing mechanism is provided on the rear side of the top of the mounting frame (2). A snap ring storage rod (3) is provided on the top of the mounting frame (2) in front of the pushing mechanism. A mounting plate (4) is provided on the front end of the top of the mounting frame (2). A pressing mechanism is provided on the top front side of the mounting plate (4). A pressing head (5) is provided at the bottom output end of the pressing mechanism. A support plate (6) extends from the bottom front side of the mounting frame (2). A placement mechanism is provided on the top of the support plate (6). The placement mechanism includes two placement frames (7). The two placement frames (7) move alternately to the bottom of the pressing head (5). A small pressing head (8) is placed in the placement frame (7). A material blocking mechanism is provided on the bottom front side of the mounting plate (4). The pushing mechanism pushes the snap ring at the bottom of the snap ring storage rod (3) forward to the bottom of the pressure head (5). The blocking mechanism moves up to limit and block the snap ring. The snap ring falls onto the small pressure head (8). The pressure head (5) presses the snap ring down and pre-presses it onto the small pressure head (8).

2. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 1, characterized in that, The pushing mechanism includes a pushing cylinder (9) located at the top rear end of the mounting frame (2). A pushing plate (10) is fixedly connected to the front output end of the pushing cylinder (9). A receiving plate (11) is connected to the front side of the pushing plate (10). A matching circlip groove (12) is provided at the front end of the receiving plate (11).

3. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 2, characterized in that, The mounting frame (2) has a track frame (13) located on the top of the pusher cylinder (9) and a front and rear moving rail (14) located on the top of the track frame (13). The receiving plate (11) moves back and forth between the front and rear moving rails (14).

4. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 2, characterized in that, The material blocking mechanism includes a material blocking cylinder (15) located at the bottom front side of the mounting plate (4), and a material blocking head (16) is provided at the top output end of the material blocking cylinder (15).

5. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 4, characterized in that, The receiving horizontal plate (11) has a moving groove (17) on the front side for the material blocking head (16) to pass through. The moving groove (17) is located below the card slot (12).

6. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 1, characterized in that, The pressing mechanism includes a pressing cylinder (18) located at the top front side of the mounting plate (4), a pressing head (5) located at the bottom output end of the pressing cylinder (18), a telescopic rod (20) located in the middle of the bottom of the pressing head (5), and pressing claws (21) located around the bottom of the pressing head (5).

7. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 1, characterized in that, The placement mechanism includes a push-pull cylinder (22) located on the rear side of the top of the support plate (6). The left output end of the push-pull cylinder (22) is connected to a slide plate (23). A slide rail (24) is provided on the front side of the top of the support plate (6). The slide plate (23) slides on the slide rail (24). Two placement racks (7) are located on the top of the slide plate (23) and are spaced apart to the left and right.

8. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 3, characterized in that, The front and rear moving rails (14) are equipped with a snap ring sensor (25) at the bottom of the snap ring storage rod (3). The snap ring sensor (25) faces the snap ring groove (12) to receive the position of the snap ring on the snap ring storage rod (3).

9. The automatic pre-installation snap ring device for the drive shaft bearing bracket according to claim 1, characterized in that, The mounting plate (4) is provided with a mounting side plate (19) on one side, and the top of the snap ring storage rod (3) is mounted on the mounting plate (4) and the mounting side plate (19) by a mounting block.

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