Automobile plate spring end ear automatic processing equipment

Abstract

The application relates to the technical field of plate spring processing equipment, in particular to an automatic processing equipment for the end ear of an automobile plate spring, which comprises an annular processing seat, a clamp, a first heat treatment pool, a second heat treatment pool and ear winding devices, the annular processing seat is circumferentially provided with a swing mechanism for bearing the plate spring, the swing mechanism points to the center of the circle, the annular processing seat can drive the swing mechanism to rotate, the clamp is arranged on the swing mechanism and used for fixing the plate spring, the first heat treatment pool and the second heat treatment pool are respectively arranged on the inner side and the outer side of the annular processing seat, and a plurality of ear winding devices are respectively arranged on the inner side and the outer side of the annular processing seat, the unique swing structure of the plate spring enables one end of the plate spring to enter the heat treatment pool for heat treatment while the other end of the plate spring is subjected to ear winding processing, the plate spring does not need to be disassembled, the ear winding processing time is shortened, the production and processing efficiency is improved, and the utilization efficiency of space and time is high.

Description

Technical Field

[0001] This invention relates to the field of leaf spring processing equipment, and in particular to an automated processing equipment for the end coiling lugs of automotive leaf springs. Background Technology

[0002] The leaf spring eye is a core manufacturing process in automotive leaf springs. Its function is to bend the end of the leaf spring into a ring-shaped eye. The eye is a key structure for connecting the leaf spring to the vehicle body. It is connected to the frame pin and acts as a hinge fulcrum, transmitting force and guiding the movement of the wheels.

[0003] The common processing method involves heating one end of the leaf spring, then using a robotic arm to pick it up and place it sequentially into different processing equipment (such as head cutting, ear rolling, shaping, etc.) for processing. Afterward, it is transferred to a heat treatment device for annealing to eliminate internal stresses. After the above processes are completed, the robotic arm picks up the leaf spring, turns it, and repeats the ear rolling process on the other end of the leaf spring.

[0004] The existing technology has the following drawbacks: First, the rolling process requires frequent loading and transfer between different devices by a robotic arm, which prolongs the processing time and is not conducive to improving production efficiency; Second, processing the leaf spring end by end is time-consuming and needs to be optimized. The purpose of this invention is to improve the existing rolling equipment to solve the above problems and improve the production efficiency of leaf spring rolling. Summary of the Invention

[0005] The purpose of this invention is to provide an automated processing equipment for the end coiling of automotive leaf springs to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including an annular processing seat, a fixture, a first heat treatment tank, a second heat treatment tank, and a rolling processing device. The annular processing seat is circumferentially distributed with a swing mechanism that carries a leaf spring. The swing mechanism points towards the center of the circle, and the annular processing seat can drive the swing mechanism to rotate. The clamp is set on the swing mechanism to fix the leaf spring. After the robot places the leaf spring on the swing mechanism, the clamp can hold the leaf spring to avoid the leaf spring from shaking during the swing of the swing mechanism or during the processing of the ear rolling device, which would affect the processing accuracy of the end ear rolling. The first heat treatment pool and the second heat treatment pool are respectively located inside and outside the annular processing base. The first heat treatment pool and the second heat treatment pool refer to pool-shaped components used for heat treatment of rolled ears. The terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the number of technical features indicated. They have no practical significance. In specific implementation, the first heat treatment pool and the second heat treatment pool are filled with heat-conducting oil for soaking the rolled ears to achieve heat treatment. Multiple eye-rolling processing devices are respectively arranged inside and outside the annular processing seat, and are distributed in a rotationally symmetrical manner with respect to the center of the annular processing seat. The eye-rolling processing device here refers to a mechanical device that can perform different eye-rolling processing steps on the end of the leaf spring. It is not an essential technical feature of this application, nor is it the technical content that the applicant wants to protect. Therefore, its specific structure and working principle will not be further explained. The eye-rolling processing device here includes, but is not limited to, an electromagnetic heating device, a leaf spring cutting device, a leaf spring eye-rolling device, and an eye-rolling shaping device. The electromagnetic heating device is used to heat the end of the leaf spring to improve the machinability of the leaf spring. The leaf spring cutting device is used to cut the leaf spring to improve the regularity of the eye-rolling joint after eye-rolling. The leaf spring eye-rolling device is used to compress the end of the leaf spring to shape the leaf spring. In specific implementation, technicians can adjust the number and arrangement of the eye-rolling processing devices to adapt to actual production and processing needs.

[0007] To optimize the above technical solution, the following measures are further taken: The ring-shaped processing seat includes a fixed seat, a rotating seat, and a servo motor. The fixed seat is fixed to the ground, the rotating seat is set on the fixed seat and forms a rotating pair with the fixed seat, the swing mechanism is installed on the rotating seat, the servo motor is installed on the side of the fixed seat, the servo motor shaft is provided with a gear, and the side of the fixed seat is provided with a gear ring. The gear meshes with the gear ring to realize that the ring-shaped processing seat drives the swing mechanism to rotate.

[0008] As a further improvement to the above technical solution: the swing mechanism includes a swing plate, a first oil cylinder and a second oil cylinder. The swing plate is used to support the leaf spring. The bottom surface of the swing plate is hinged to the rotating seat. The first oil cylinder and the second oil cylinder are respectively arranged on the inner and outer sides of the annular processing seat. The bottom ends of the first oil cylinder and the second oil cylinder are hinged to the rotating seat, and the top ends of the first oil cylinder and the second oil cylinder are hinged to the bottom surface of the swing plate. The angle adjustment of the swing plate can be realized by the cooperation of the first oil cylinder and the second oil cylinder.

[0009] As a further improvement to the technical solution: the clamp includes clamping cylinders and clamping bars. The clamping cylinders are symmetrically fixed on both sides of the swing plate. The clamping bars are connected to the movable ends of the clamping cylinders. The clamping cylinders on both sides drive the clamping bars to clamp the leaf spring on both sides, thereby fixing the leaf spring. The surface of the clamping bars can be sanded or engraved to increase the clamping firmness of the clamping bars on the leaf spring and avoid the leaf spring from loosening or slipping during heat treatment and ear rolling.

[0010] As an improvement to the aforementioned technical solution: both the first and second heat treatment pools are provided with cavities to separate them into heat treatment zones. Heating devices are provided on the surfaces of both the first and second heat treatment pools, and the heat treatment zones at different locations have different temperatures. The purpose of this arrangement is to achieve heat treatment at different temperatures for the leaf spring lugs. The purpose of the cavities is to reduce heat transfer between adjacent heat treatment zones at different temperatures. The heating devices referred to here are devices for heating the heat transfer oil contained in the first and second heat treatment pools. Any device that can achieve the heating function is applicable and there is no substantial difference. Therefore, no further disclosure or explanation of its specific structure and working principle is required, and this will not constitute a technical problem of insufficient disclosure or unclear description.

[0011] Furthermore, the outer side of the first heat treatment pool is inclined towards the annular processing seat. The purpose of this inclined structure is to allow the first heat treatment pool to adapt to the leaf springs immersed in the first heat treatment pool under the drive of the swing mechanism, ensuring that the leaf spring lugs can be fully immersed in the heat transfer oil.

[0012] Preferably, the inner side of the second heat treatment tank is inclined towards the annular processing seat. The purpose of this inclined structure is to allow the second heat treatment tank to adapt to the leaf spring immersed in the second heat treatment tank under the swing mechanism, ensuring that the leaf spring lug can be fully immersed in the heat transfer oil.

[0013] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: A. The unique leaf spring swing structure allows one end of the leaf spring to enter the heat treatment bath for heat treatment while the other end is being rolled. There is no need to disassemble the leaf spring during the process, which helps to shorten the rolling time, improve production efficiency, and make high use of space and time. B. The structure is simple and can realize the double-head rolling lug processing of leaf springs. The rolling lug processing and heat treatment of different processes can be completed in one leaf spring loading operation, and the rolling lug processing process can be freely combined according to actual needs. C. The first heat treatment tank and the second heat treatment tank are separated to form different heat treatment zones. Different ear rolling operations and heat treatment processes at different temperatures can be achieved with a single leaf spring loading operation. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a top view schematic diagram of the structure of the present invention; Figure 3This is a three-dimensional structural diagram of the annular machining seat; Figure 4 for Figure 3 Enlarged view of a specific area; Figure 5 This is a top view schematic diagram of the annular machining base; Figure 6 for Figure 5 Schematic diagram of the cross-section in the AA direction; Figure 7 for Figure 6 Enlarged view of a specific area; Figure 8 A three-dimensional structural diagram of the first heat treatment tank and the second heat treatment tank; In the diagram: Annular machining seat-100, fixed seat-101, rotating seat-102, servo motor-103, gear-104, gear ring-105, swing mechanism-200, swing plate-201, first oil cylinder-202, second oil cylinder-203, fixture-300, clamping oil cylinder-301, clamping bar-302, first heat treatment tank-400, cavity-401, heat treatment zone-402, heating device-403, second heat treatment tank-500, ear rolling processing device-600. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0016] Please see Figure 1-7 The present invention provides an automated processing equipment for the end coiling of automotive leaf springs, including an annular processing seat 100, a fixture 300, a first heat treatment tank 400, a second heat treatment tank 500, and a coiling processing device 600. The annular processing seat 100 is circumferentially distributed with a swing mechanism 200 that carries the leaf spring. The swing mechanism 200 points to the center of the circle, and the annular processing seat 100 can drive the swing mechanism 200 to rotate. The annular processing seat 100 includes a fixed seat 101, a rotating seat 102, and a servo motor 103. The fixed seat 101 is fixed to the ground. The rotating seat 102 is mounted on the fixed seat 101 and forms a rotating pair with the fixed seat 101. The swing mechanism 200 is mounted on the rotating seat 102. The servo motor 103 is mounted on the side of the fixed seat 101. The shaft of the servo motor 103 is provided with a gear 104. The side of the fixed seat 101 is provided with a gear ring 105. The gear 104 meshes with the gear ring 105 to enable the annular processing seat 100 to drive the swing mechanism 200 to rotate. The swing mechanism 200 includes a swing plate 201, a first hydraulic cylinder 202, and a second hydraulic cylinder 203. The swing plate 201 is used to support the leaf spring. The bottom surface of the swing plate 201 is hinged to the rotating seat 102. The first hydraulic cylinder 202 and the second hydraulic cylinder 203 are respectively disposed on the inner and outer sides of the annular processing seat 100. The bottom ends of the first hydraulic cylinder 202 and the second hydraulic cylinder 203 are hinged to the rotating seat 102, and the top ends of the first hydraulic cylinder 202 and the second hydraulic cylinder 203 are hinged to the bottom surface of the swing plate 201. The clamp 300 is mounted on the swing mechanism 200 to fix the leaf spring. The clamp 300 includes a clamping cylinder 301 and a clamping bar 302. The clamping cylinder 301 is symmetrically fixed on both sides of the swing plate 201. The clamping bar 302 is connected to the movable end of the clamping cylinder 301. The first heat treatment tank 400 and the second heat treatment tank 500 are respectively located inside and outside the annular processing seat 100. A plurality of ear-rolling processing devices 600 are respectively arranged on the inner and outer sides of the annular processing seat 100, and are distributed in a rotationally symmetrical manner with respect to the center of the annular processing seat 100. Example 2

[0017] Please see Figure 1-8 The present invention provides an automated processing equipment for the end coiling of automotive leaf springs, including an annular processing seat 100, a fixture 300, a first heat treatment tank 400, a second heat treatment tank 500, and a coiling processing device 600. The annular processing seat 100 is circumferentially distributed with a swing mechanism 200 that carries the leaf spring. The swing mechanism 200 points to the center of the circle, and the annular processing seat 100 can drive the swing mechanism 200 to rotate. The annular processing seat 100 includes a fixed seat 101, a rotating seat 102, and a servo motor 103. The fixed seat 101 is fixed to the ground. The rotating seat 102 is mounted on the fixed seat 101 and forms a rotating pair with the fixed seat 101. The swing mechanism 200 is mounted on the rotating seat 102. The servo motor 103 is mounted on the side of the fixed seat 101. The shaft of the servo motor 103 is provided with a gear 104. The side of the fixed seat 101 is provided with a gear ring 105. The gear 104 meshes with the gear ring 105 to enable the annular processing seat 100 to drive the swing mechanism 200 to rotate. The swing mechanism 200 includes a swing plate 201, a first hydraulic cylinder 202, and a second hydraulic cylinder 203. The swing plate 201 is used to support the leaf spring. The bottom surface of the swing plate 201 is hinged to the rotating seat 102. The first hydraulic cylinder 202 and the second hydraulic cylinder 203 are respectively disposed on the inner and outer sides of the annular processing seat 100. The bottom ends of the first hydraulic cylinder 202 and the second hydraulic cylinder 203 are hinged to the rotating seat 102, and the top ends of the first hydraulic cylinder 202 and the second hydraulic cylinder 203 are hinged to the bottom surface of the swing plate 201. The clamp 300 is mounted on the swing mechanism 200 to fix the leaf spring. The clamp 300 includes a clamping cylinder 301 and a clamping bar 302. The clamping cylinder 301 is symmetrically fixed on both sides of the swing plate 201. The clamping bar 302 is connected to the movable end of the clamping cylinder 301. The first heat treatment tank 400 and the second heat treatment tank 500 are respectively located inside and outside the annular processing seat 100. Both the first heat treatment tank 400 and the second heat treatment tank 500 are provided with cavities 401 to separate the first heat treatment tank 400 and the second heat treatment tank 500 to form a heat treatment zone 402. Both the first heat treatment tank 400 and the second heat treatment tank 500 are provided with heating devices 403. The outer side of the first heat treatment tank 400 is inclined toward the annular processing seat 100, and the inner side of the second heat treatment tank 500 is inclined toward the annular processing seat 100. A plurality of ear-rolling processing devices 600 are respectively arranged on the inner and outer sides of the annular processing seat 100, and are distributed in a rotationally symmetrical manner with respect to the center of the annular processing seat 100.

[0018] Working principle: The robotic arm loads the leaf spring to be processed onto the swing mechanism 200, and fixes the leaf spring through the clamp 300. The servo motor 103 drives the rotating seat 102 to rotate on the fixed seat 101 through the cooperation of the gear 104 and the gear ring 105, so that the end of the leaf spring passes through the eye-rolling processing device 600 of different processes, thereby realizing the forming of the eye-rolling of the leaf spring end.

[0019] For Embodiment 1 and Embodiment 2, let the two ends of the leaf spring be end A and end B, respectively. When the rotating seat 102 rotates on the fixed seat 101, the swing mechanism 200 and the leaf spring move synchronously with the rotating seat 102. The swing mechanism 200 causes end A of the leaf spring to swing upwards towards the ear-rolling processing device 600 located inside the annular processing seat 100. When the first cylinder 202 and the second cylinder 203 of the swing mechanism 200 cooperate to match the position of end A of the leaf spring with the ear-rolling processing device 600, end A of the leaf spring can enter the ear-rolling processing device 600 for processing. If the first cylinder 202 and the second cylinder 203 adjust the position of the leaf spring so that end A of the leaf spring is misaligned with the ear-rolling processing device 600, the ear-rolling processing device 600 can be skipped, thereby facilitating technicians to select different processes of the ear-rolling processing device 600 according to actual production needs and to combine them freely.

[0020] Since each swing mechanism 200 carrying a leaf spring is distributed in a rotationally symmetrical manner around the center of the annular processing seat 100, each leaf spring can pass through the ear-rolling processing device 600 of different processes in sequence to realize operations such as heating, cutting, ear rolling and shaping in sequence. There is no need to frequently disassemble and assemble the leaf springs during the process, which helps to improve production and processing efficiency.

[0021] The leaf spring A end is tilted upwards and sequentially passes through each ear-rolling processing device 600, immersing the leaf spring B end in the second heat treatment tank 500. If the ear-rolling processing of leaf spring A end is completed, the swing mechanism 200 tilts the leaf spring B end upwards, causing it to sequentially pass through the ear-rolling processing devices 600 located outside the annular processing seat 100 to complete different ear-rolling processing operations. At this time, leaf spring A end is immersed in the first heat treatment tank 400 for heat treatment to eliminate internal stress, without needing to disassemble the leaf spring. After leaf spring B end completes each ear-rolling processing operation, the swing mechanism 200 tilts the leaf spring A end upwards, immersing the leaf spring B end in the second heat treatment tank 500 for heat treatment to eliminate internal stress.

[0022] The main difference between Embodiment 2 and Embodiment 1 is that: the first heat treatment tank 400 and the second heat treatment tank 500 are provided with cavities 401. When the leaf spring ends move in the first heat treatment tank 400 and the second heat treatment tank 500 for heat treatment, the swing mechanism 200 drives the leaf spring to swing up and down, which can avoid the leaf spring ends from colliding with the cavity 401. The different heat treatment zones 402 separated by the cavity 401 have different temperatures. The purpose of this setting is to achieve heat treatment at different temperatures for the leaf spring ends.

[0023] The control method of this invention is to achieve automatic control through an external controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element 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 invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated processing equipment for the end coiling lugs of automotive leaf springs, characterized in that, include: The ring-shaped machining base (100) has a swing mechanism (200) that carries leaf springs distributed around its circumference. The swing mechanism (200) points towards the center of the circle. The ring-shaped machining base (100) can drive the swing mechanism (200) to rotate. A clamp (300) is mounted on the swing mechanism (200) to fix the leaf spring; The first heat treatment tank (400) and the second heat treatment tank (500) are respectively located inside and outside the annular processing base (100); Ear rolling processing device (600), a plurality of ear rolling processing devices (600) are respectively arranged on the inner and outer sides of the annular processing seat (100), and are distributed in a rotationally symmetrical manner with respect to the center of the annular processing seat (100); The annular machining base (100) includes a fixed base (101), a rotating base (102), and a servo motor (103). The swing mechanism (200) includes a swing plate (201), a first hydraulic cylinder (202), and a second hydraulic cylinder (203); The swing plate (201) is used to support the leaf spring, and the bottom surface of the swing plate (201) is hinged to the rotating seat (102); The first oil cylinder (202) and the second oil cylinder (203) are respectively set on the inner and outer sides of the annular processing seat (100). The bottom ends of the first oil cylinder (202) and the second oil cylinder (203) are hinged to the rotating seat (102), and the top ends of the first oil cylinder (202) and the second oil cylinder (203) are hinged to the bottom surface of the swing plate (201).

2. The automated processing equipment for the end coiling lugs of automotive leaf springs according to claim 1, characterized in that: The mounting base (101) is fixed to the ground; The rotating seat (102) is mounted on the fixed seat (101) and forms a rotating pair with the fixed seat (101); the swing mechanism (200) is mounted on the rotating seat (102); The servo motor (103) is mounted on the side of the fixed base (101). The servo motor (103) shaft is equipped with a gear (104), and the fixed base (101) is equipped with a gear ring (105). The gear (104) meshes with the gear ring (105) to enable the ring processing seat (100) to drive the swing mechanism (200) to rotate.

3. The automated processing equipment for the end coiling lugs of automotive leaf springs according to claim 2, characterized in that: The clamp (300) includes a clamping cylinder (301) and a clamping bar (302); The clamping cylinders (301) are symmetrically fixed on both sides of the swing plate (201), and the clamping bar (302) is connected to the movable end of the clamping cylinders (301).

4. An automated processing equipment for the end coiling of automotive leaf springs according to any one of claims 1-3, characterized in that: Both the first heat treatment tank (400) and the second heat treatment tank (500) are provided with cavities (401) to separate the first heat treatment tank (400) and the second heat treatment tank (500) to form heat treatment zones (402). Both the first heat treatment tank (400) and the second heat treatment tank (500) are provided with heating devices (403).

5. An automated processing equipment for the end coiling of automotive leaf springs according to any one of claims 1-3, characterized in that: The outer side of the first heat treatment pool (400) is inclined towards the annular processing seat (100).

6. An automated processing equipment for the end coiling of automotive leaf springs according to any one of claims 1-3, characterized in that: The inner side of the second heat treatment tank (500) is inclined towards the annular processing seat (100).

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