Automatic assembly equipment for piston of suspension air supply module

Abstract

The invention discloses automatic assembly equipment for a piston of a suspension air supply module, and belongs to the technical field of piston assembly. The equipment comprises a rotating disc, a tool fixed to the edge of the rotating disc and a piston taking and placing unit, the equipment is provided with a preassembling station, a marking station and a press-fitting station, and a telescopic assembly is arranged in the tool. According to the equipment, the turntable is used as a core driving carrier, and full-process automation of preassembling, laser marking, press fitting and hot sleeving is achieved through multi-station cooperation. The tool built-in telescopic assembly is combined with two independent press-fitting processes to ensure concentric alignment and assembly precision of the assembly; the equipment is provided with a modularized stress supporting unit, press-fitting pressure is independently borne, and long-term stable operation is guaranteed. The problems that a traditional technology is low in efficiency, insufficient in precision, poor in consistency and the like are solved, high-reliability and high-automation-level piston assembly assembling is achieved, and the method is suitable for the high-end manufacturing field of automobile air suspension systems and the like.

Description

Technical Field

[0001] The invention relates to the technical field of piston assembly, in particular to automatic assembly equipment for a suspension air supply module piston. Background Art

[0002] As the automotive industry evolves toward intelligent and comfortable features, air suspension systems, as a core feature of high-end vehicles, are experiencing rapid market growth. The assembly quality of the piston assembly in the suspension air supply module significantly impacts the module's air compression efficiency and system sealing performance. Traditional assembly processes, which primarily rely on manual labor and semi-automated equipment, present significant drawbacks. First, manual assembly is susceptible to operator experience, leading to problems such as coaxiality deviation and press-fit misalignment, making it difficult to ensure component accuracy. Second, semi-automated equipment lacks multi-station coordination capabilities, resulting in decentralized processes and low efficiency and poor process repeatability. Furthermore, existing equipment lacks versatility, complex model changeovers and commissioning, making it difficult to adapt to the production needs of multiple models. Furthermore, the lack of a quality traceability mechanism hinders quality control capabilities for large-scale production. To address these challenges, there is an urgent need to develop high-precision, fully automated, and process-integrated piston assembly equipment to address the technical contradictions between efficiency, precision, and reliability, and meet the requirements for core components in the high-end automotive manufacturing sector. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic assembly equipment for the piston of a suspension air supply module, which realizes the fully automated assembly of the piston assembly through multi-station collaboration, precise positioning of the turntable and automated pressing and loading and unloading units, so as to improve the assembly accuracy and consistency and enhance the process repeatability and efficiency.

[0004] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: an automatic assembly device for a suspension air supply module piston, comprising a turntable and a tooling fixed to the edge of the turntable and a piston picking and unloading unit. The tooling is transported from the pre-assembly station to the press-fitting station via the turntable. A telescopic assembly is provided in the tooling. The press-fitting station is provided with a press above the turntable. A needle bearing pressure head and a piston pin pressure head are provided at the lower end of the press.

[0005] The application is used for automatically assembling a suspension air supply module piston assembly, and the piston assembly comprises a piston connecting rod, a needle bearing, a piston pin and a piston. The piston assembly is sequentially assembled, comprising the following steps: ① manual pre-assembly positioning; ② laser marking; ③ needle bearing pressing; ④ piston pin pressing; and ⑤ hot sleeve treatment assembly of the piston. The rotating disc can accurately position the tool to the pre-assembly station, the marking station and the pressing station in sequence, the pressing is divided into two times, the first pressing is to press the needle bearing into the piston connecting rod through the needle bearing pressing head, the second pressing is to make the piston pin penetrate the assembly formed by the piston connecting rod and the needle bearing, and the piston can be heated at the same time of pressing, the piston is taken and placed through the piston taking and placing unit, and then the assembly of the piston is completed. The two times of pressing combined with the hot sleeve process can ensure the coaxiality and connection strength of the assembly, reduce manual intervention, and improve product consistency and process stability.

[0006] Preferably, the rotating disc is connected with a divider below for driving the rotating disc to rotate, and the divider is connected with a motor. The cooperation of the divider and the motor drives the rotating disc to rotate, ensures the accurate parking of the tool between the stations, avoids positioning deviation, realizes accurate positioning and continuous operation of multiple stations, and improves the degree of automation and production efficiency.

[0007] Preferably, a marking station is arranged between the pre-assembly station and the pressing station, and a laser marking machine is arranged above the marking station. The laser marking can enhance the traceability of the product, avoid the wear or falling problems of the traditional marking mode, and improve the quality management efficiency.

[0008] Preferably, the tool is arranged through the rotating disc, the upper surface of the tool is provided with a positioning assembly, the telescopic assembly in the tool comprises a shaft sleeve, a pressing guide rod is arranged in the shaft sleeve, a block is arranged between the shaft sleeve and the pressing guide rod, and the pressing guide rod and the block are in gap cooperation and are respectively provided with a first elastic member and a second elastic member at the lower ends. In the application, the pressing is realized by the cooperation of the pressing head and the telescopic assembly of the tool. The shaft sleeve and the telescopic block are used for supporting the piston connecting rod, the pressing guide rod is located at the center of the block and is used for positioning the needle bearing, the piston connecting rod and the needle bearing are concentric in the pressing process, the pressing guide rod is lowered first, the first elastic member is contracted, and the center surfaces of the piston connecting rod and the needle bearing are flush during the pressing, the pressing guide rod and the block are lowered after the assembly is completed, and space is reserved for the assembly of the subsequent piston.

[0009] Preferably, the press-fitting station is provided with a force support unit below the rotary table for supporting the pressure during press fitting. Due to the provision of the force support unit, the rotary table is not subjected to force, and deformation or tilting of the rotary table can be avoided, thereby prolonging the service life of the rotary table, ensuring uniform force during press fitting, and improving the safety and press fitting quality of the equipment. The force support unit comprises a clamping assembly and a step, the clamping assembly is connected to a driving cylinder, and the step is connected to a sliding block provided on a guide rail. The clamping assembly serves as a support and fixing function and is driven by the driving cylinder to move horizontally; the height of the bottom limiting surface of the tool can be adjusted, and the step serves to provide a force surface of different heights, and the guide rail and the sliding block can be flexibly moved to switch the force surface to meet the press fitting requirements.

[0010] Preferably, the piston taking and placing unit body is a clamping jaw, and the clamping jaw is provided with a driver to enable it to move horizontally and rotate. The clamping jaw can accurately and flexibly take and place the piston, and the clamping jaw can move in the xyz direction along the guide rail with the piston and can also rotate. Specifically, the clamping jaw can heat the piston at a high-frequency heating machine provided in the device and then sleeve the piston on an assembly composed of a piston connecting rod, a needle bearing and a piston pin. The multi-degree-of-freedom movement of the clamping jaw combined with online heating by the high-frequency heating machine can improve the efficiency and operation safety of the hot sleeve process.

[0011] Preferably, a pipeline connected to a suction mechanism is arranged in the piston pin press head to realize taking and placing by forming a pressure difference to adsorb the piston pin. During the first press fitting, i.e. press fitting of the needle bearing, the piston pin press head simultaneously sucks and adsorbs the piston pin, and during the second press fitting, i.e. press fitting of the piston pin, the piston pin press head releases the piston pin to place it in the piston assembly and press it tightly.

[0012] Preferably, the device further comprises a high-frequency heating machine for a hot sleeve process. The hot sleeve process is a mechanical assembly technology that realizes interference fit by using the thermal expansion and contraction characteristics of materials. The device expands the piston by heating it with the high-frequency heating machine, then sleeves the piston on the outside of the piston assembly at room temperature, and after cooling, the piston on the outside shrinks to realize stable connection, thereby avoiding deformation of parts caused by mechanical forced assembly.

[0013] Preferably, the device further comprises a heat dissipation air duct for heat dissipation. The provision of the heat dissipation air duct can effectively reduce the operating temperature of the equipment, prevent overheating of the equipment, and thus ensure long-term stable operation of the equipment.

[0014] The beneficial effects of the present application are: the present application realizes efficient, accurate and reliable assembly of the suspension air supply module piston assembly through innovative design. The device adopts a multi-station coordinated automatic process, takes the turntable as the core driving carrier, combines tool positioning and gripper material taking and placing units, greatly reduces manual intervention, and significantly improves production continuity; the built-in telescopic assembly and elastic buffer structure of the tool ensure the concentric alignment of the needle bearing and the piston connecting rod during the pressing process, and the assembly of the needle bearing and the piston pin is completed through two independent pressing processes, which ensures the structural accuracy and connection strength of the assembly; the device is configured with a modular stress support unit to independently bear the pressing force, avoid deformation of the turntable under stress, and ensure long-term stable operation of the device; the laser marking station gives the assembly a permanent identification, realizes full-process quality traceability, and improves production management efficiency. In addition, through adjustable clamping assemblies and flexible tool design, the device can quickly adapt to different models of products. The overall scheme solves the problems of low efficiency, insufficient accuracy and poor consistency of traditional processes, and provides a high-reliability automatic assembly solution for high-end manufacturing fields such as automobile air suspension systems. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0016] Figure 1 The structural schematic diagram of the device described in embodiment one.

[0017] Figure 2 The side view of the device described in embodiment one.

[0018] Figure 3 The schematic diagram of the turntable described in embodiment one.

[0019] Figure 4 The schematic diagram of the pressing station described in embodiment one.

[0020] Figure 5 The sectional view of the tool described in embodiment one.

[0021] Explanation of reference signs: 1 - turntable; 11 - pre-assembly station; 12 - marking station; 13 - pressing station; 2 - tool; 21 - positioning assembly; 22 - shaft sleeve; 23 - pressing guide rod; 24 - block; 3 - needle bearing pressing head; 4 - piston pin pressing head; 5 - stress support unit; 51 - driving air cylinder; 52 - step; 53 - guide rail; 6 - heat dissipation air duct; 7 - pressing machine; 8 - laser marking machine; 9 - piston taking and placing unit. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] The concepts involved in the present application will be described below with reference to the drawings. It should be noted that the following descriptions of the concepts are only for the purpose of making the content of the present application easier to understand, and do not represent a limitation on the protection scope of the present application. Meanwhile, the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] Embodiment one Referring to Figure 1 and Figure 2 A suspension air supply module piston automatic assembly device comprises a turntable 1, a tool 2 fixed to the edge of the turntable 1, and a piston taking and placing unit 9. The tool 2 is conveyed from a pre-assembly station 11 to a press assembly station 13 through the turntable 1. The tool 2 is provided with an extension assembly. The press assembly station 13 is provided with a press 7 above the turntable 1. The lower end of the press 7 is provided with a needle bearing press head 3 and a piston pin press head 4. The present application is used for automatically assembling a suspension air supply module piston assembly, and the piston assembly comprises a piston connecting rod, a needle bearing, a piston pin, and a piston. The present application sequentially assembles the piston assembly, comprising the following steps: ① manual pre-assembly positioning; ② laser marking; ③ press assembly of the needle bearing; ④ press assembly of the piston pin; and ⑤ hot sleeve treatment of the piston assembly. Figure 3 It is a schematic view of the turntable 1; Figure 4 It is a schematic view of the press assembly station 13; Figure 5 It is a sectional view of the tool 2. The turntable 1 can accurately position the tool 2 to the pre-assembly station 11, the marking station 12, and the press assembly station 13 in sequence. The press assembly is divided into two times. The first press assembly is to press the needle bearing into the piston connecting rod through the needle bearing press head 3. The second press assembly is to make the piston pin penetrate through the assembly composed of the piston connecting rod and the needle bearing through the piston pin press head 4. The piston is heated and treated at the same time of the press assembly. The piston is taken and placed through the piston taking and placing unit 9, and then the assembly of the piston is completed. The two press assemblies combined with the hot sleeve process can ensure the coaxiality and connection strength of the assembly, reduce manual intervention, and improve the product consistency and process stability.

[0025] Preferably, the lower part of the rotating disc 1 is connected with a segmenter for driving the rotating disc 1 to rotate, and the segmenter is connected with a motor. The cooperation of the segmenter and the motor drives the rotating disc 1 to rotate, ensures the accurate parking of the tool between the stations, avoids the positioning deviation, realizes the accurate positioning and continuous operation of multiple stations, and improves the automation degree and production efficiency.

[0026] Preferably, a marking station 12 is arranged between the pre-assembly station 11 and the press-fitting station 13, and a laser marking machine 8 is arranged above the marking station 12. The laser marking can enhance the traceability of the product, avoid the wear or falling problems of the traditional marking mode, and improve the quality management efficiency.

[0027] Preferably, the tool 2 is arranged through the rotating disc 1, the upper surface of the tool 2 is provided with a positioning assembly 21, the telescopic assembly in the tool 2 comprises a shaft sleeve 22, the shaft sleeve 22 is provided with a press-fitting guide rod 23, a block 24 is arranged between the shaft sleeve 22 and the press-fitting guide rod 23, and the press-fitting guide rod 23 and the block 24 are in gap cooperation and are respectively provided with a first elastic member and a second elastic member at the lower ends. In the present application, the press-fitting is realized by the cooperation of the press head and the telescopic assembly of the tool 2, wherein the shaft sleeve 22 and the telescopic block 24 are used for supporting the piston connecting rod, the press-fitting guide rod 23 is located at the center of the block 24 and is used for positioning the needle bearing, so that the piston connecting rod and the needle bearing are concentric in the press-fitting process, the press-fitting guide rod 23 moves downward first, the first elastic member contracts, and the center surfaces of the piston connecting rod and the needle bearing are flush, and after the assembly is completed, the press-fitting guide rod 23 and the block 24 move downward to reserve space for the assembly of the piston.

[0028] Preferably, the press-fitting station 13 is provided below the rotating disc 1 with a force support unit 5 for supporting the pressure in the press-fitting process. Due to the arrangement of the force support unit 5, the rotating disc 1 is not subjected to force, and the deformation or overturning of the rotating disc 1 under force can be avoided, the service life of the rotating disc is prolonged, the force in the press-fitting process is ensured to be uniform, and the safety of the equipment and the press-fitting quality are improved. The force support unit 5 comprises a clamping assembly and a step 52, the clamping assembly is connected with a driving cylinder 51, the step 52 is connected with a sliding block, and the sliding block is arranged on a guide rail 53. The clamping assembly plays a supporting and fixing role and is driven by the driving cylinder 51 to move horizontally; the height of the bottom limiting surface of the tool 2 can be adjusted, the step 52 provides force surfaces with different heights, and the step 52 can be moved flexibly to switch the force surfaces through the arrangement of the guide rail 53 and the sliding block to adapt to the press-fitting requirements.

[0029] Preferably, the piston taking and placing unit 9 is a gripper, which is provided with a driver to make it translatable and rotatable. The gripper can accurately and flexibly take and place the piston, and can move the piston along the guide rail in the xyz direction, and can also rotate. Specifically, the gripper can take the piston to a high-frequency heating machine provided in the device, heat the piston, and then sleeve the piston on an assembly composed of a piston connecting rod, a needle bearing, and a piston pin. The multi-degree-of-freedom motion of the gripper combined with online heating by the high-frequency heating machine can improve the efficiency and operation safety of the hot-sleeving process.

[0030] Preferably, a pipeline connecting a suction mechanism is arranged in the piston pin press head 4 to realize taking and placing by forming a pressure difference to adsorb the piston pin. In the first press fitting, i.e., the press fitting of the needle bearing, the piston pin press head 4 simultaneously sucks and adsorbs the piston pin. In the second press fitting, i.e., the press fitting of the piston pin, the piston pin press head 4 releases the piston pin to place it in the piston assembly and press it tightly.

[0031] Preferably, a high-frequency heating machine is further included for a hot-sleeving process. The hot-sleeving process is a mechanical assembly technology that realizes interference fit by using the thermal expansion and contraction characteristics of materials. The present application expands the piston by heating it with the high-frequency heating machine, and then sleeves the piston on the outside of the piston assembly at room temperature. After cooling, the piston on the outside shrinks to realize stable connection, avoiding deformation of parts caused by mechanical forced assembly.

[0032] Preferably, a heat dissipation air duct 6 is further included for heat dissipation. The arrangement of the heat dissipation air duct 6 can effectively reduce the operating temperature of the equipment, prevent overheating of the equipment, and thus ensure long-term stable operation of the equipment.

[0033] It should be noted that the terms used in the present application are only for describing specific embodiments, and are not intended to limit the scope of the present application. As shown in the specification of the present application, unless the context clearly indicates otherwise, the terms "one", "a", "an", and / or "the" do not specifically refer to the singular, but also include the plural. The terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method or device including the element.

[0034] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate relative positions or orientations based on the orientation or position shown in the drawings, and are used only to facilitate the description of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" and the like should be broadly interpreted, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0035] The above embodiments and / or implementations are only used to illustrate the preferred embodiments and / or implementations of the present application, and do not limit the embodiments of the present application in any form. Any person skilled in the art can make some changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the present application, but should be considered as the same technology or embodiment as the present application. The principles and implementations of the present application are described by applying specific examples. The above example is only used to help understand the method of the present application and its core idea. The above description is only the preferred embodiment of the present application. It should be noted that due to the limited nature of the language, there are infinite specific structures. For those skilled in the art, without departing from the principles of the present application, some improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner. These improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be considered as the protection scope of the present application.

Claims

1. An automatic assembly equipment for a suspension air supply module piston, characterized by: The invention comprises a turntable (1), a tool (2) fixed to the edge of the turntable (1), and a piston discharging unit (9), wherein the tool (2) is transported from a pre-installation station (11) to a press-fitting station (13) via the turntable (1), wherein a telescopic component is provided in the tool (2), and the press-fitting station (13) is provided with a press (7) above the turntable (1), and a needle bearing press head (3) and a piston pin press head (4) are provided at the lower end of the press (7).

2. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: A divider for driving the turntable (1) to rotate is connected below the turntable (1), and the divider is connected to a motor.

3. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: A marking station (12) is provided between the pre-installation station (11) and the pressing station (13), and a laser marking machine (8) is provided above the marking station (12).

4. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: The tooling (2) is arranged to pass through the turntable (1), and a positioning component (21) is provided on the upper surface of the tooling (2). The telescopic component in the tooling (2) includes a shaft sleeve (22), a press-fit guide rod (23) is provided in the shaft sleeve (22), a block (24) is provided between the shaft sleeve (22) and the press-fit guide rod (23), and the press-fit guide rod (23) and the block (24) are clearance-fitted, and a first elastic member and a second elastic member are provided at the lower ends thereof, respectively.

5. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: The press-fitting station (13) is provided with a force-supporting unit (5) below the turntable (1) for supporting the pressure during press-fitting.

6. The automatic assembly equipment for the suspension air supply module piston according to claim 5, characterized in that: The force-bearing support unit (5) comprises a clamping assembly and a step (52), wherein the clamping assembly is connected to the driving cylinder (51), and the step (52) is connected to a slider, and the slider is arranged on a guide rail (53).

7. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: The main body of the piston material taking and discharging unit (9) is a clamping claw, and the clamping claw is provided with a driver so that it can translate and rotate.

8. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: The piston pin pressure head (4) is internally provided with a pipeline connected to an air extraction mechanism, and the piston pin is adsorbed by forming a pressure difference to achieve material taking and releasing.

9. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: It also includes a high-frequency heating machine for shrink-wrapping process.

10. The automatic assembly equipment for the suspension air supply module piston according to claim 1, characterized in that: It also includes a heat dissipation duct (6) for dissipating heat.

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