Steel plate spring eye bush press fitting device

Abstract

The application relates to a steel plate spring eye bush press-fitting device and belongs to the technical field of steel plate spring production, which comprises a U-shaped base with a left opening, the upper end of the U-shaped base is provided with a through hole matched with the diameter size of the eye, and the left end of the U-shaped base is provided with a supporting frame. The steel plate spring eye bush press-fitting device makes the moving pressing block push the stored bush upwards to pass through the circular hole and the through hole, and under the action of the limiting movement, the bush is inserted into the eye. After the use of the bush stored in the bush storage cylinder is completed, the bush storage cylinder on the rotating disc is driven to rotate through the driving cooperation of the driving motor and the speed reducer, another bush storage cylinder is aligned with the through hole with the same center, the stored bush is used again, the bush in the bush storage cylinder after the previous use is completed is supplemented, uninterrupted feeding of the traditional bush is avoided, bush press-in deviation and inclination are avoided, and the efficiency of bush press-fitting is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel leaf spring production technology, specifically to a steel leaf spring coil bushing pressing device. Background Technology

[0002] Automotive leaf springs, also known as leaf springs, are common elastic elements in automotive suspension systems. They are mostly used in non-independent suspension structures, especially in medium and large trucks. They are mainly made of alloy steels such as 60Si2Mn and 50CrV, and are processed through processes such as blanking, earing, quenching, and shot peening to form multiple stacked alloy springs of unequal length and curvature, which together form an elastic beam with approximately equal strength.

[0003] When pressing the bushing into the lug of a leaf spring, the leaf spring is placed on a processing table, and the lug is aligned with the hydraulic press head. After alignment, the bushing is placed on the lug, and the hydraulic equipment pushes the press head to press the bushing into the lug. The above-mentioned prior art has the following technical defects: First, the bushing needs to be placed on the lug continuously during the pressing process. Second, the bushing is prone to tilting and shifting during pressing. Therefore, we propose a leaf spring lug bushing pressing device to solve this technical defect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pressing device for steel leaf spring coil bushings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel leaf spring coil lug bushing pressing device, including a U-shaped base with an opening on the left side, the upper end of the U-shaped base having a through hole adapted to the diameter of the coil lug, a support frame at the left end of the U-shaped base, a hydraulic push rod at the upper end of the support frame, a pressure ring detachably provided at the push rod of the hydraulic push rod, the pressure ring being concentric with the through hole, and the inner diameter of the pressure ring being equal to the diameter of the through hole;

[0006] The bottom of the U-shaped base is equipped with a drive motor, the output end of the drive motor is equipped with a reducer, the output end of the reducer is equipped with a rotating disk, and the rotating disk is provided with a plurality of circular holes at equal intervals in a ring. One of the circular holes is concentric with the through hole and has the same diameter. The lower end of the rotating disk is equipped with a bushing storage cylinder, the bushing storage cylinder is equal in number to the number of the circular holes and is connected to them one by one. The inner diameter of the bushing storage cylinder is equal to the diameter of the circular hole.

[0007] A movable pressure block is sealed and slidable inside the bushing storage cylinder. A limiting ring is provided at the lower end of the bushing storage cylinder. A pushing component is provided on the U-shaped base to push the movable pressure block to move.

[0008] Using the above technical solution, the bushings are stacked and inserted into each bushing storage cylinder with the opening facing upward. Then, the steel leaf spring is placed on the U-shaped base and adjusted so that the rolled ear and the perforation are concentric. Then, the hydraulic push rod on the support frame pushes the pressure ring downward to press and fix the rolled ear on the U-shaped base. After fixing, the moving component pushes the moving pressure block, which is limited by the limit ring, to move inside the bushing storage cylinder. The moving pressure block pushes the stored bushing upward through the circular hole and the perforation, and under the action of the limiting movement, the bushing is inserted into the rolled ear.

[0009] Furthermore, after the bushings stored in the bushing storage cylinder are used up, the bushing storage cylinder on the rotating disk is driven by the drive motor and reducer to rotate, so that another bushing storage cylinder is aligned with the center of the perforation, thereby realizing the reuse of the stored bushings and replenishing the bushings in the previously used bushing storage cylinder. This avoids the uninterrupted feeding of bushings in the traditional method and the bushings pressing off offset and tilting, thus improving the efficiency of bushing pressing.

[0010] As a preferred embodiment of this utility model, the inner diameter of the limiting ring is smaller than the inner diameter of the bushing storage cylinder, and they are arranged concentrically, while the diameter of the moving pressure block is equal to the inner diameter of the bushing storage cylinder.

[0011] By adopting the above technical solution, it is ensured that the movable pressure block can be limited within the bushing storage cylinder.

[0012] As a preferred embodiment of this utility model, the bottom end of the U-shaped base is provided with a plurality of mounting and fastening holes.

[0013] Using the above technical solution, the U-shaped base can be installed and fixed on the mounting carrier by passing the fastening screw through the mounting fastening hole.

[0014] In a preferred embodiment of this invention, the output end of the reducer is connected to the center of the rotating disk.

[0015] By adopting the above technical solution, the rotating disk is guaranteed to rotate, so that each bushing storage cylinder is aligned with the perforation.

[0016] As a preferred technical solution of this utility model, the pushing component includes a hydraulic push rod II disposed at the upper end of the U-shaped base, and a pressing seat is provided at the push rod of the hydraulic push rod II, the pressing seat being concentric with the limiting ring.

[0017] In a preferred embodiment of this invention, the diameter of the extrusion seat is equal to the inner diameter of the limiting ring.

[0018] Using the above technical solution, the hydraulic push rod 2 pushes the extrusion seat to move, passing through the limit ring, thereby moving the moving pressure block and synchronously pushing the stored bushing to move.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] This leaf spring coiled lug bushing pressing device stores the bushings by stacking them into each bushing storage cylinder with the opening facing upwards. Then, the leaf spring is placed on a U-shaped base and adjusted so that the coiled lug and the perforation are concentric. Then, the hydraulic push rod on the support frame pushes the pressure ring downwards to press and fix the coiled lug on the U-shaped base. After fixing, the moving component pushes the moving pressure block, which is limited by the limit ring, to move inside the bushing storage cylinder. The moving pressure block pushes the stored bushing upwards through the circular hole and the perforation, and under the action of the limit movement, the bushing is inserted into the coiled lug.

[0021] Furthermore, after the bushings stored in the bushing storage cylinder are used up, the bushing storage cylinder on the rotating disk is driven by the drive motor and reducer to rotate, so that another bushing storage cylinder is aligned with the center of the perforation, thereby realizing the reuse of the stored bushings and replenishing the bushings in the previously used bushing storage cylinder. This avoids the uninterrupted feeding of bushings in the traditional method and the bushings pressing off offset and tilting, thus improving the efficiency of bushing pressing. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 This is a top view of a partial structure of the present invention;

[0025] Figure 4 This is a three-dimensional structural view of the pushing component of this utility model.

[0026] In the diagram: 1. U-shaped base; 2. Perforation; 3. Hydraulic push rod one; 4. Pressure ring; 5. Drive motor; 6. Reducer; 7. Rotary disk; 8. Bushing storage cylinder; 9. Limiting ring; 10. Moving pressure block; 11. Hydraulic push rod two; 12. Extrusion seat; 13. Circular hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 4The leaf spring coil bushing pressing device in this embodiment includes a U-shaped base 1 with an opening on the left side. The U-shaped base 1 is made of high-strength steel, such as 45# steel, to ensure that it has sufficient strength and rigidity to withstand various forces during the pressing process. A through hole 2 adapted to the diameter of the coil is provided on the upper left side of the U-shaped base 1. The diameter of the through hole 2 is precisely machined according to the actual diameter of the leaf spring coil, with the error controlled within ±0.1mm to ensure that the coil can be accurately aligned.

[0029] A support frame 3 is vertically fixed to the left end of the U-shaped base 1. The support frame 3 is fixed to the U-shaped base 1 by welding. The welding is firm and reliable and can withstand a large load. A hydraulic push rod 3 is fixed to the upper surface of the support frame 3. The hydraulic push rod 3 is a common standard model on the market. Its thrust is selected according to the actual pressing requirements. For example, a hydraulic push rod with a thrust of 5000N is selected. A pressure ring 4 is detachably fixed to the push rod of the hydraulic push rod 3 by bolts. The pressure ring 4 is made of wear-resistant material, such as chromium steel, to improve its service life. The pressure ring 4 is concentric with the perforation 2. The inner diameter of the pressure ring 4 is equal to the diameter of the perforation 2. This ensures uniform pressing of the ear during the pressing process.

[0030] A drive motor 5 is fixed to the bottom of the U-shaped base 1. The drive motor 5 is a servo motor, and its model is selected according to the rotation requirements of the rotating disk 7. For example, a servo motor with a power of 1.5kW is selected to ensure that the rotation angle and speed of the rotating disk 7 can be precisely controlled. A reducer 6 is fixed to the output end of the drive motor 5. The reducer 6 is a planetary reducer, and its reduction ratio is designed according to the actual transmission requirements. For example, a planetary reducer with a reduction ratio of 10:1 is selected to convert the high-speed rotation of the drive motor 5 into a low-speed, high-torque output to meet the rotation requirements of the rotating disk 7. The output end of the reducer 6 is connected and fixed to the center of the rotating disk 7 to ensure that the rotating disk 7 can rotate smoothly.

[0031] The rotating disk 7 has multiple circular holes 13 evenly spaced in a ring. The number of circular holes 13 is determined according to actual production needs. For example, six circular holes 13 are set. One of the circular holes 13 is concentric with the through hole 2 and has the same diameter. This way, when the rotating disk 7 rotates to a specific position, the bushing can be accurately aligned with the ear. The lower end of the rotating disk 7 is fixed with a bushing storage cylinder 8 by bolts. The number of bushing storage cylinders 8 is equal to the number of circular holes 13 and they are connected one by one. The inner diameter of the bushing storage cylinder 8 is equal to the diameter of the circular hole 13 so that the bushing can pass through smoothly. The bushing storage cylinder 8 is made of stainless steel.

[0032] The bushing storage cylinder 8 has a sliding movable pressure block 10 inside for sealing. The movable pressure block 10 is made of stainless steel and has good sealing performance. It can slide smoothly inside the bushing storage cylinder 8. The diameter of the movable pressure block 10 is equal to the inner diameter of the bushing storage cylinder 8 to ensure a tight fit between the movable pressure block 10 and the bushing storage cylinder 8 and to prevent bushing leakage. The lower end of the bushing storage cylinder 8 is fixed with a limit ring 9. The inner diameter of the limit ring 9 is smaller than the inner diameter of the bushing storage cylinder 8 and is set at the same center. The limit ring 9 is made of metal, such as stainless steel, to enhance its strength and wear resistance.

[0033] The U-shaped base 1 is equipped with a pushing assembly for moving the movable pressure block 10. The pushing assembly includes a hydraulic push rod 21 fixed to the upper surface of the U-shaped base 1. The hydraulic push rod 21 is also a standard model, and its thrust is selected according to the needs of pushing the movable pressure block 10. For example, a hydraulic push rod with a thrust of 3000N is selected. The push rod of the hydraulic push rod 21 is fixed with a pressing seat 12 by bolts. The pressing seat 12 is concentric with the limiting ring 9. The diameter of the pressing seat 12 is equal to the inner diameter of the limiting ring 9. In this way, when the hydraulic push rod 211 pushes the pressing seat 12 to move, it can accurately pass through the limiting ring 9 and push the movable pressure block 10 to move.

[0034] In addition, the bottom four corners of the U-shaped base 1 are provided with mounting and fastening holes. The number of mounting and fastening holes is determined according to the actual installation requirements. By passing the fastening screws through the mounting and fastening holes, the U-shaped base 1 can be installed and fixed on the mounting carrier, such as a workbench, to ensure the stability of the device.

[0035] Usage steps,

[0036] With the bushings facing upwards, insert them one by one into each bushing storage cylinder 8 for storage, ensuring that the bushings are neatly arranged in the bushing storage cylinder 8.

[0037] Place the leaf spring on the U-shaped base 1 and adjust its position so that the lug and the perforation 2 are concentric.

[0038] Start hydraulic push rod 3. Hydraulic push rod 3 pushes pressure ring 4 down, pressing and fixing the ear onto the U-shaped base 1, ensuring that the ear will not move during the pressing process.

[0039] Start hydraulic push rod 11. Hydraulic push rod 11 pushes the extrusion seat 12 to move. The extrusion seat 12 passes through the limiting ring 9 and pushes the moving pressure block 10 to move upward in the bushing storage cylinder 8. The moving pressure block 10 pushes the stored bushing to move upward, so that the bushing passes through the circular hole 13 and the through hole 2 in sequence, and is accurately inserted into the ear under the action of the limiting movement.

[0040] When the bushings stored in the bushing storage cylinder 8 are used up, the drive motor 5 is started. The drive motor 5 drives the rotating disk 7 to rotate through the reducer 6, so that the other bushing storage cylinder 8 is aligned with the center of the perforation 2.

[0041] Refill the bushing storage cylinder 8 with bushings after previous use for future use.

[0042] Beneficial effects

[0043] Avoid continuous feeding: By setting multiple bushing storage cylinders 8, multiple bushings can be stored in advance. When the bushings in one bushing storage cylinder 8 are used up, the rotation of the rotary disk 7 will align another bushing storage cylinder 8 with the perforation 2, so that the stored bushings can be reused. There is no need to continuously feed bushings during the pressing process, which greatly improves production efficiency.

[0044] To prevent bushing from shifting or tilting during pressing: During the pressing process, the bushing passes through the circular hole 13 and the through hole 2 in sequence. The circular hole 13 and the through hole 2 provide precise guidance for the bushing, ensuring that the bushing will not tilt or shift when it is pressed into the lug, thus improving the pressing quality and ensuring the overall performance of the leaf spring.

[0045] Reasonable structure and easy operation: The device has a compact overall structure and clear connection between the components. It is easy to install and disassemble. Operators only need to follow simple steps to complete the pressing of the bushing, which reduces the difficulty of operation and the intensity of labor.

[0046] To further improve the automation level and production efficiency of this device, the system control can be expanded as follows:

[0047] The control system is set up, and a PLC (Programmable Logic Controller) is used as the core of the control system to precisely control the drive motor 5, hydraulic push rod 3 and hydraulic push rod 11.

[0048] Equipped with a human-machine interface (HMI), operators can input production parameters, view equipment operating status and fault information through the HMI. The HMI communicates with the control system to realize human-machine interaction, making it convenient for operators to operate and monitor the equipment.

[0049] Through the above system control expansion, the steel leaf spring coil bushing pressing device can realize automated production, further improve production efficiency and product quality, and reduce labor costs.

[0050] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressing device for a leaf spring coiled lug bushing, comprising a U-shaped base with an opening on the left side, characterized in that, The upper end of the U-shaped base is provided with a through hole that matches the diameter of the rolled ear. The left side end of the U-shaped base is provided with a support frame. The upper end of the support frame is provided with a hydraulic push rod. A pressure ring is detachably provided at the push rod of the hydraulic push rod. The pressure ring is concentric with the through hole, and the inner diameter of the pressure ring is equal to the diameter of the through hole. The bottom of the U-shaped base is equipped with a drive motor, the output end of the drive motor is equipped with a reducer, the output end of the reducer is equipped with a rotating disk, and the rotating disk is provided with a plurality of circular holes at equal intervals in a ring. One of the circular holes is concentric with the through hole and has the same diameter. The lower end of the rotating disk is equipped with a bushing storage cylinder, the bushing storage cylinder is equal in number to the number of the circular holes and is connected to them one by one. The inner diameter of the bushing storage cylinder is equal to the diameter of the circular hole. A movable pressure block is sealed and slidable inside the bushing storage cylinder. A limiting ring is provided at the lower end of the bushing storage cylinder. A pushing component is provided on the U-shaped base to push the movable pressure block to move.

2. The steel leaf spring coil bushing pressing device according to claim 1, characterized in that: The inner diameter of the limiting ring is smaller than the inner diameter of the bushing storage cylinder, and they are set at the same center. The diameter of the moving pressure block is equal to the inner diameter of the bushing storage cylinder.

3. The steel leaf spring coil bushing pressing device according to claim 1, characterized in that: The bottom end of the U-shaped base is provided with multiple mounting and fastening holes.

4. The steel leaf spring coil lug bushing pressing device according to claim 1, characterized in that: The output end of the speed reducer is connected to the center of the rotating disk.

5. The steel leaf spring coil bushing pressing device according to claim 1, characterized in that: The pushing assembly includes a second hydraulic push rod located at the upper end of the U-shaped base. The push rod of the second hydraulic push rod is provided with a pressing seat, and the pressing seat is concentric with the limiting ring.

6. The steel leaf spring coil bushing pressing device according to claim 5, characterized in that: The diameter of the compression seat is equal to the inner diameter of the limiting ring.

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