Radiator rivet fixed-height automatic assembly equipment and method

Abstract

The invention relates to the technical field of automatic assembly, in particular to radiator rivet fixed-height automatic assembly equipment and method.The radiator rivet fixed-height automatic assembly equipment comprises a rack, a first feeding mechanism, a second feeding mechanism, a feeding positioning mechanism, a positioning transfer mechanism, an assembly positioning mechanism and a fixed-height assembly mechanism; a first working table and a second working table are arranged on the machine frame, the first working table and the second working table are arranged in a step shape, the first feeding mechanism and the second feeding mechanism are both arranged on the first working table, and the feeding positioning mechanism is arranged on the second feeding mechanism. And the pin receiving mechanism is used for receiving pins fed by the first feeding mechanism and the second feeding mechanism. Automatic continuous operation is achieved in the whole process of feeding, positioning, transferring and assembling, manual intervention is reduced, the labor intensity is lowered, meanwhile, the assembling takt time and the production stability are improved, and the automatic assembling machine is particularly suitable for the radiator batch manufacturing scene.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic assembly, in particular to a radiator rivet height fixing automatic assembly equipment and method. BACKGROUND

[0002] In the traditional radiator rivet assembly process, manual or semi-automatic operation is often adopted, which has the problems of low assembly precision, low efficiency, high labor intensity, etc. Especially in the rivet assembly process, due to the lack of effective positioning and height control means, the rivet pressing depth is not the same, the assembly position deviation is often caused, etc., which leads to unstable product quality and high scrap rate. In addition, the traditional equipment has single structure, and the feeding, positioning, assembly and other links are independent of each other, so it is difficult to realize the synchronous feeding and precise matching of multiple specifications of the pin, the equipment occupies a large area, the layout is unreasonable, and it is difficult to adapt to the requirements of modern production line for automation, flexibility and high efficiency.

[0003] Although some automatic assembly equipment has been put into use in the prior art, there are still many deficiencies. For example, some equipment adopts multi-station separation design, which leads to long material transfer path and difficult to guarantee positioning accuracy; some equipment lacks buffer pressing mechanism, and parts are easily damaged due to impact during assembly; some equipment uses mechanical limiting method for height control, which has limited precision and is difficult to adapt to the assembly requirements of different products. Therefore, it is urgent to develop an automatic assembly equipment which can realize precise positioning, height fixing and pressing assembly, multi-specification adaptation and compact structure, so as to meet the modern production requirements of high efficiency and high quality assembly of radiator. SUMMARY

[0004] To solve the above problems, the present application realizes automatic continuous operation from feeding, positioning, transfer to assembly, reduces manual intervention, reduces labor intensity, and improves assembly rhythm and production stability, which is especially suitable for the radiator rivet height fixing automatic assembly equipment and method in the batch manufacturing scene of radiator.

[0005] The technical scheme adopted by the present application is: a radiator rivet height-fixing automatic assembly equipment, comprising a rack, a first feeding mechanism, a second feeding mechanism, a feeding positioning mechanism, a positioning transfer mechanism, an assembly positioning mechanism and a height-fixing assembly mechanism; the rack is provided with a first workbench and a second workbench, the first workbench and the second workbench are arranged in a stepped manner, the first feeding mechanism and the second feeding mechanism are both arranged on the first workbench, the feeding positioning mechanism is arranged on the second feeding mechanism and is used for receiving the pins sent by the first feeding mechanism and the second feeding mechanism; the assembly positioning mechanism comprises a transmission module, a positioning feeding assembly and a positioning assembly jig, the transmission module is arranged on the second workbench, and the positioning feeding assembly and the positioning assembly jig are both arranged on the transmission module; the positioning transfer mechanism is used for placing the pins on the positioning feeding assembly from the feeding positioning mechanism, and the positioning assembly jig is used for placing the radiator to be assembled; during assembly, the transmission module drives the positioning feeding assembly to drive the height-fixing assembly mechanism below, the height-fixing assembly mechanism is used for grabbing the pins on the positioning feeding assembly, the positioning feeding assembly and the positioning assembly jig are alternated under the action of the transmission module, so that the radiator on the positioning assembly jig is below the height-fixing assembly mechanism, and the pins are assembled on the radiator.

[0006] Further improvement of the above scheme is that the height-fixing assembly mechanism comprises an assembly support, an assembly driving electric cylinder, an assembly transmission seat, an assembly buffer seat and an assembly height-fixing rod, the assembly support is arranged above the transmission device on the second workbench, the assembly driving electric cylinder is arranged above the assembly support, the assembly transmission seat is slidably arranged on the assembly support and slides along the assembly support under the action of the assembly driving electric cylinder, the assembly buffer seat is arranged on the assembly transmission seat, and the assembly height-fixing rod is arranged on the assembly buffer seat, and the assembly height-fixing rod is provided with a vacuum suction pipeline for suction and fixation of the pins.

[0007] Further improvement of the above scheme is that the first feeding mechanism comprises a first feeding disc, a first feeding track and a straight vibrator, the second feeding mechanism comprises a second feeding disc and a second feeding track, the first feeding disc and the second feeding disc are both arranged on the first workbench, the two ends of the first feeding track are respectively connected with the first feeding disc and the feeding positioning mechanism, and the two ends of the second feeding track are respectively connected with the second feeding disc and the feeding positioning mechanism; the straight vibrator is arranged on the first workbench and is connected with the first feeding track and the second feeding track.

[0008] Further improvement of the above scheme is that the first feeding track is provided with at least two first feeding grooves for synchronously feeding a plurality of pins, the second feeding track is provided with a second feeding groove, the feeding positioning mechanism comprises a positioning base, a positioning block and a positioning detection element, the positioning base is arranged on the second workbench, the positioning block is arranged on the positioning base, the positioning block is provided with a first positioning groove and a second positioning groove, the first positioning groove is connected with the first feeding groove, the second positioning groove is connected with the second feeding groove, and the positioning detection element is used for detecting the pins on the first positioning groove and the second positioning groove.

[0009] Further improvement of the above scheme is that the positioning and transferring mechanism comprises a transferring support, a transferring moving cylinder, a transferring lifting cylinder and a transferring material taking rod, the transferring support is arranged at the top end of the assembly support, the transferring moving cylinder is arranged on the transferring support, the transferring lifting cylinder is arranged on the transferring moving cylinder, and the transferring material taking rod is arranged on the transferring lifting cylinder and provided with a vacuum adsorption part for grabbing the pins; the transferring moving cylinder and the transferring lifting cylinder cooperate to place the pins grabbed from the feeding positioning mechanism on the positioning and discharging assembly.

[0010] Further improvement of the above scheme is that the transmission module comprises a driving cylinder, a transmission guide rail and a transmission sliding plate, the driving cylinder is arranged on the second workbench, the transmission guide rail is mounted on the second workbench, and the transmission sliding plate is slidingly arranged on the transmission guide rail; the positioning and discharging assembly and the positioning assembly jig are arranged on the transmission sliding plate.

[0011] Further improvement of the above scheme is that the positioning and discharging assembly comprises a discharging fixing seat and a positioning sleeve, the discharging fixing seat is arranged on the transmission sliding plate, and the positioning sleeve is arranged on the discharging fixing seat and used for pin positioning.

[0012] Further improvement of the above scheme is that the assembly support is provided with a plurality of lifting guide rods, the assembly transmission seat is slidingly arranged on the lifting guide rods, the assembly driving cylinder is a servo cylinder, the assembly buffer seat is provided with a buffer spring, the buffer spring is provided with a connecting block, and the assembly height fixing rod is arranged on the connecting block.

[0013] A heat dissipation radiator rivet height automatic assembly method is adopted by the automatic assembly equipment, and comprises the following steps: Step S1, preparation and positioning: different types or specifications of pins are respectively delivered to the feeding positioning mechanism by the first feeding mechanism and the second feeding mechanism for accurate positioning; the positioned pins are grabbed and placed in the positioning sleeve of the positioning feeding assembly by the positioning transfer mechanism, so that the lower end surface of the pin is in contact with the bottom reference surface of the positioning sleeve, and the preliminary height of the pin is completed; Step S2, assembly alternation: the positioning feeding assembly carrying the pins with completed preliminary height is moved to the directly below of the height assembly mechanism by the transmission module; at the same time, the positioning assembly jig carrying the radiator to be assembled is synchronously moved with the transmission slide plate, and the work station alternation is performed with the positioning feeding assembly, so that the assembly hole of the radiator to be press-fitted with the pin is accurately located below the height assembly mechanism; Step S3, adsorption and alignment: the assembly driving cylinder of the height assembly mechanism drives the assembly transmission seat and the assembly height rod to descend until the vacuum suction nozzle at the lower end of the assembly height rod contacts and vacuum adsorbs the top end of the pin in the positioning sleeve; Step S4, press-fitting and final height: after the assembly driving cylinder continues to drive the assembly transmission seat to rise by a small distance, the transmission module is actuated again to move the radiator on the positioning assembly jig to the directly below of the assembly height rod; then, the assembly driving cylinder drives the entire assembly unit to descend, and the pin is press-fitted into the assembly hole of the radiator by the assembly height rod; when the connecting block on the assembly buffer seat contacts the preset mechanical height reference surface on the assembly support, the press-fitting action stops, and the height from the top end of the pin to the reference surface of the radiator is accurately defined, realizing the final height; Step S5, reset and cycle: the assembly driving cylinder drives the assembly height rod to rise and reset, and the vacuum adsorption is released; the transmission module drives the positioning assembly jig to move out, and the next empty positioning feeding assembly is moved to the directly below of the height assembly mechanism, and the next feeding of the radiator is performed, and the equipment enters the next assembly cycle.

[0014] Further improvement of the above scheme is that in step S1, the preliminary height is controlled by the depth of the inner cavity of the positioning sleeve, and the depth determines the initial protruding height of the pin before press-fitting, providing accurate pre-positioning for the final height.

[0015] Further improvement of the above scheme is that in steps S2 and S4, the actions of the driving cylinder of the transmission module and the assembly driving cylinder are cooperatively controlled by the same programmable logic controller, ensuring that the alternating motion of the positioning feeding assembly and the positioning assembly jig and the press-fitting action are seamlessly connected in time sequence, preventing interference.

[0016] Further improvement of the above scheme is that in step S4, the final height is achieved by the absolute downward stroke of the assembly height setting rod and the elastic compensation of the buffer spring; when the connecting block contacts the mechanical height reference surface, the assembly drive electric cylinder receives a signal to stop pressing down, and the buffer spring can ensure that the pin has been subjected to sufficient and constant pressing force when reaching the hard limit, avoiding damage to the parts caused by overpressure.

[0017] Further improvement of the above scheme is that the assembly drive electric cylinder is a servo electric cylinder, which adopts a pressure and position hybrid control mode during the pressing process in step S4: in the initial pressing stage, the speed control is mainly used for fast approach, and when the system detects a sharp rise in pressure, the pressure control mode is switched to precise pressure control until the preset height setting position and pressing force are reached, so as to balance the assembly efficiency and height setting accuracy.

[0018] The present application has the following advantages: Compared with the existing radiator assembly rivets, the present application divides the rack into a first workbench and a second workbench arranged in a stepped manner, so that the first feeding mechanism, the second feeding mechanism and other components are arranged in zones, which not only optimizes the equipment space structure, but also facilitates the flow and centralized control of materials, effectively reduces the equipment floor area, and adapts to the modern intensive production demand. The feeding positioning mechanism can simultaneously receive pins from the two feeding mechanisms and realize precise grabbing and transferring through the positioning transfer mechanism, avoiding the positional errors caused by traditional manual or dispersed feeding, significantly improving the consistency and positioning accuracy of pin feeding, and laying a solid foundation for subsequent assembly processes. The assembly positioning mechanism integrates a transmission module, a positioning material placing assembly and a positioning assembly jig, and through the coordinated driving of the transmission module, the positioning material placing assembly and the positioning assembly jig realize orderly alternating operation. This makes the docking process of the radiator and the pin more smooth, and also facilitates the adaptation of different specifications of products to the assembly demand, improving the universality and production line adaptability of the equipment. Through the synergistic effect of the assembly drive electric cylinder, the assembly transmission seat, the buffer seat and the assembly height setting rod with vacuum suction function, the precise picking, buffer pressing and height setting control of the pin are realized. The buffer structure effectively relieves the assembly impact and avoids damage to the parts; the vacuum suction ensures that the pin does not deviate during transfer and pressing, thereby ensuring that the height of each rivet assembly is consistent, greatly improving the product qualification rate. The present application realizes automatic continuous operation from feeding, positioning, transfer to assembly, reduces manual intervention, reduces labor intensity, improves assembly rhythm and production stability, and is especially suitable for radiator batch manufacturing scenes, which is conducive to enterprises to realize cost reduction and efficiency increase.

[0019] The automatic assembly method for radiator rivets with fixed height utilizes the aforementioned automatic assembly equipment. The core advantage of this method lies in its unique two-step height-fixing mechanism: "preliminary height setting" and "final height setting." In step S1, the initial height of the rivet is precisely preset by bringing its lower end face into contact with the bottom reference surface of the positioning sleeve. In the crucial step S4, the pressing process is forcibly terminated by making hard contact between the connecting block on the assembly buffer seat and the preset, immovable mechanical height-fixing reference surface on the assembly bracket. This mechanical hard-limiting method fundamentally eliminates height errors caused by factors such as the repeatability of the electric cylinder's positioning accuracy and system elastic deformation, ensuring that the height from the top of each rivet to the radiator reference surface has extremely high consistency and repeatability after pressing, resulting in stable and reliable product quality. The entire method has clearly defined steps and rigorous logic, forming a complete automated closed loop. From material preparation, precise positioning, intelligent gripping, station alternation to pressing height setting and reset cycles, each link is seamlessly connected. Through precise control of the transmission module, efficient and interference-free alternation between the positioning and feeding components and the positioning assembly fixture is achieved. This allows the pin gripping and radiator pressing processes to be completed cyclically within a single assembly station, significantly shortening the assembly cycle time for a single product and improving the overall production line efficiency. The method incorporates a flexible assembly strategy combining buffering and adsorption. In steps S3 and S4, the presence of the assembly buffer effectively absorbs the impact force generated during pressing, preventing damage to the precision pins or radiator fins. Simultaneously, vacuum adsorption is used throughout the process to transfer and fix the pins, avoiding scratches or positioning misalignment that may occur with mechanical clamping. This ensures stable pin posture and accurate alignment during transfer and pressing, significantly reducing the defect rate. By adjusting the positioning sleeve, positioning assembly fixture, and mechanical height reference surface, the height assembly requirements of different radiator and rivet specifications can be easily adapted, enhancing the flexibility of the production line and facilitating product upgrades or multi-variety co-production. This invention ensures the critical height assembly accuracy of the product and also demonstrates significant advantages in efficiency, reliability and adaptability, making it suitable for the large-scale, high-quality automated production needs of the radiator manufacturing industry. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the automatic assembly equipment for fixing the height of radiator rivets according to the present invention; Figure 2 for Figure 1 A three-dimensional schematic diagram from another perspective of the automatic assembly equipment for fixing the height of the radiator rivets; Figure 3 for Figure 1 Side view of the automatic assembly equipment for fixing the height of the radiator rivets; Figure 4 for Figure 1A schematic view of part structure of the automatic assembling equipment for fixing the height of the radiator rivet; Figure 5 For Figure 2 A schematic view of the enlarged view of A in FIG. 1; Figure 6 For Figure 1 A flowchart of the automatic assembling method for fixing the height of the radiator rivet.

[0021] The figure mark explanation: rack 1, first workbench 11, second workbench 12, first feeding mechanism 2, first feeding disc 21, first feeding track 22, first feeding groove 221, straight vibrator 23, second feeding mechanism 3, second feeding disc 31, second feeding track 32, second feeding groove 321, feeding positioning mechanism 4, positioning base 41, positioning block 42, first positioning groove 421, second positioning groove 422, positioning detection element 43, positioning transfer mechanism 5, transfer support 51, transfer moving air cylinder 52, transfer lifting air cylinder 53, transfer material taking rod 54, vacuum adsorption part 541, assembling positioning mechanism 6, transmission module 61, driving air cylinder 611, transmission guide rail 612, transmission sliding plate 613, positioning discharging assembly 62, discharging fixed base 621, positioning sleeve 622, positioning assembly jig 63, height fixing assembly mechanism 7, assembly support 71, lifting guide rod 711, assembly driving air cylinder 72, assembly transmission seat 73, assembly buffer seat 74, buffer spring 741, connecting block 742, assembly height fixing rod 75, vacuum adsorption pipeline 751. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0023] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. Thus, for example, reference to "a component" includes a combination of two or more components, and the like. Figures 1-6As shown, in an embodiment of the present application, a radiator rivet height-fixing automatic assembly equipment is provided, which comprises a rack 1, a first feeding mechanism 2, a second feeding mechanism 3, a feeding positioning mechanism 4, a positioning transfer mechanism 5, an assembly positioning mechanism 6 and a height-fixing assembly mechanism 7. The rack 1 is provided with a first workbench 11 and a second workbench 12, which are arranged in a stepped manner. The first feeding mechanism 2 and the second feeding mechanism 3 are arranged on the first workbench 11. The feeding positioning mechanism 4 is arranged on the second feeding mechanism 3 and is used to receive the pins sent by the first feeding mechanism 2 and the second feeding mechanism 3. The assembly positioning mechanism 6 comprises a transmission module 61, a positioning feeding assembly 62 and a positioning assembly jig 63. The transmission module 61 is arranged on the second workbench 12. The positioning feeding assembly 62 and the positioning assembly jig 63 are arranged on the transmission module 61. The positioning transfer mechanism 5 is used to place the pins from the feeding positioning mechanism 4 on the positioning feeding assembly 62. The positioning assembly jig 63 is used to place the radiator to be assembled. During assembly, the transmission module 61 drives the positioning feeding assembly 62 to be transmitted below the height-fixing assembly mechanism 7. The height-fixing assembly mechanism 7 is used to grab the pins on the positioning feeding assembly 62. The positioning feeding assembly 62 and the positioning assembly jig 63 are alternately driven by the transmission module 61, so that the radiator on the positioning assembly jig 63 is below the height-fixing assembly mechanism 7, and the pins are assembled on the radiator. The rack 1 is divided into the first workbench 11 and the second workbench 12 arranged in a stepped manner, so that the first feeding mechanism 2, the second feeding mechanism 3 and other components are arranged in zones. This not only optimizes the space structure of the equipment, but also facilitates the flow and centralized control of materials, effectively reduces the equipment floor area and adapts to the modern intensive production requirements. The feeding positioning mechanism 4 can simultaneously receive the pins from the two feeding mechanisms and accurately grab and transfer the pins through the positioning transfer mechanism 5, avoiding the positional errors caused by traditional manual or dispersed feeding, significantly improving the consistency and positioning accuracy of pin feeding and laying a solid foundation for subsequent assembly processes. The assembly positioning mechanism 6 integrates the transmission module 61, the positioning feeding assembly 62 and the positioning assembly jig 63. Through the coordinated driving of the transmission module 61, the positioning feeding assembly 62 and the positioning assembly jig 63 are alternately operated in an orderly manner. This makes the docking process of the radiator and the pins more smooth and facilitates the assembly of products of different specifications, improving the versatility and production line adaptability of the equipment. Through the synergistic action of the assembly driving cylinder, the assembly transmission seat, the buffer seat and the assembly height-fixing rod with vacuum suction function, the accurate picking, buffer pressing and height control of the pins are realized. The buffer structure effectively relieves the assembly impact and avoids part damage. The vacuum suction ensures that the pins do not deviate during transfer and pressing, thereby ensuring the consistency of the rivet assembly height and greatly improving the product qualification rate.The present application realizes automatic continuous operation from feeding, positioning, moving to assembling, reduces manual intervention, reduces labor intensity, improves assembly rhythm and production stability, and is especially suitable for batch manufacturing of radiators, which is beneficial to enterprises to reduce cost and increase efficiency.

[0025] The height fixing assembly mechanism 7 comprises an assembly support 71, an assembly driving electric cylinder 72, an assembly transmission seat 73, an assembly buffer seat 74, and an assembly height fixing rod 75. The assembly support 71 is arranged on the second workbench 12 and located above the transmission device. The assembly driving electric cylinder 72 is arranged above the assembly support 71. The assembly transmission seat 73 is slidingly arranged on the assembly support 71 and slides along the assembly support 71 under the action of the assembly driving electric cylinder 72. The assembly buffer seat 74 is arranged on the assembly transmission seat 73. The assembly height fixing rod 75 is arranged on the assembly buffer seat 74. The assembly height fixing rod 75 is provided with a vacuum suction pipeline 751 for suction and fixation of the pin. In this embodiment, the assembly driving electric cylinder 72 serves as the core power source and is fixed to the top end of the assembly support 71 to provide stable and controllable pressing force. The power is transmitted through the assembly transmission seat 73, which moves along the precise sliding guide rod of the assembly support 71 to ensure the perpendicularity and straightness of the pressing action, laying a foundation for accurate height fixing. The key innovation lies in the integrated design of the assembly buffer seat 74 and the assembly height fixing rod 75. The assembly buffer seat 74 is usually provided with buffer springs or elastic elements, which is a flexible force transmission link between the rigid transmission seat and the height fixing rod at the execution end. When pressing to the final position (i.e. the height fixing rod contacts the mechanical reference surface), the driving cylinder can continue to apply a small overtravel, and the overtravel force is absorbed by the elastic elements in the buffer seat and converted into a continuous and constant pressing force acting on the pin. This effectively avoids the rigid impact caused by the slight deviation of the part size or system inertia, ensures the softness and stability of the pressing force, and fundamentally prevents the pin or radiator body from being crushed. The vacuum suction pipeline 751 at the end of the assembly height fixing rod 75 has the functions of grabbing and pressing. Before pressing, the pin is suctioned by vacuum negative pressure to realize non-damage and reliable grabbing of the small pin; during pressing, the vacuum continues to act to ensure that the pin does not deviate or fall off during movement and initial pressing; after pressing in place, the vacuum is released and the height fixing rod retreats smoothly. The integrated design of “grabbing-transporting-pressing” eliminates the need for additional special grabbing mechanisms, simplifies the overall structure of the equipment, shortens the action process, improves the assembly efficiency, and reduces the risk of failure caused by improper coordination of multiple mechanisms. In this embodiment, the assembly height fixing rod 75 is made of tungsten steel, SKD11 or DC53, and has a quenching hardness of more than 58HCR.

[0026] The first feeding mechanism 2 comprises a first feeding tray 21, a first feeding track 22 and a straight vibrator 23, the second feeding mechanism 3 comprises a second feeding tray 31 and a second feeding track 32, the first feeding tray 21 and the second feeding tray 31 are arranged on the first workbench 11, the two ends of the first feeding track 22 are connected with the first feeding tray 21 and the feeding positioning mechanism 4 respectively, the two ends of the second feeding track 32 are connected with the second feeding tray 31 and the feeding positioning mechanism 4 respectively, and the straight vibrator 23 is arranged on the first workbench 11 and connected with the first feeding track 22 and the second feeding track 32. Specifically, at least two first feeding grooves 221 are arranged on the first feeding track 22 to synchronously feed multiple pins, a second feeding groove 321 is arranged on the second feeding track 32, the feeding positioning mechanism 4 comprises a positioning base 41, a positioning block 42 and a positioning detection element 43, the positioning base 41 is arranged on the second workbench 12, the positioning block 42 is arranged on the positioning base 41, the positioning block 42 is provided with a first positioning groove 421 and a second positioning groove 422, the first positioning groove 421 is connected with the first feeding groove 221, the second positioning groove 422 is connected with the second feeding groove 321, and the positioning detection element 43 is used for detecting the pins on the first positioning groove 421 and the second positioning groove 422. In the embodiment, the first feeding mechanism 2 and the second feeding mechanism 3 are independently arranged, so that the device can provide two different types or specifications of pins (for example, short pins and long pins used for fixing different positions of a heat sink) for the assembly process at the same time, greatly widening the application range of the device. At least two first feeding grooves 221 are arranged on the first feeding track 22, realizing synchronous multi-feeding of pins of the same specification. When the positioning and feeding assembly 62 moves to the feeding positioning station, multiple pins can be picked up at a time, so that multiple picking actions originally needed to be performed are combined into one, the feeding rhythm is significantly shortened, and the production efficiency of the whole machine is improved. The straight vibrator 23 acts on the two feeding tracks at the same time, which not only simplifies the structure, but also ensures that all the pins can be continuously conveyed forward in a stable and directional manner on the tracks, avoiding material jamming or posture errors and ensuring the smoothness of feeding. The first positioning groove 421 and the second positioning groove 422 are integrated on the same positioning block 42 and fixed on the same positioning base 41. A precise and space-constant "material transfer station" is created. No matter which feeding track the pins come from, they will finally converge and be accurately positioned here, ensuring that the spatial coordinates of the pins are unique and accurate when the positioning and feeding assembly 62 comes to pick up each time, and fundamentally eliminating the alignment errors that may be caused by multiple scattered positioning points. The positioning of the positioning detection element 43 adds the state monitoring and process interlocking function to the process. It can detect whether the pins in the first and second positioning grooves 422 are in place in real time.Only when it is detected that the pin has been accurately in place, the system will allow the positioning of the feed assembly 62 to perform the pick action; if it is detected that the material is missing or the material posture is abnormal, the system can immediately alarm or pause, preventing empty grabbing or misoperation, thereby greatly improving the stability and intelligent level of the entire automation process.

[0027] The positioning transfer mechanism 5 includes a transfer bracket 51, a transfer moving cylinder 52, a transfer lifting cylinder 53, and a transfer material taking rod 54, the transfer bracket 51 is arranged at the top end of the assembly bracket 71, the transfer moving cylinder 52 is arranged on the transfer bracket 51, the transfer lifting cylinder 53 is arranged on the transfer moving cylinder 52, and the transfer material taking rod 54 is arranged on the transfer lifting cylinder 53, and the transfer material taking rod 54 is provided with a vacuum adsorption part 541 for grabbing the pin; the transfer moving cylinder 52 and the transfer lifting cylinder 53 cooperate to place the pin grabbed from the feed positioning mechanism 4 on the positioning feed assembly 62. In this embodiment, the core feature of the mechanism is that the transfer bracket 51 is not independently arranged, but is directly arranged at the top end of the assembly bracket 71. The three-dimensional space in the Z-axis direction of the device is utilized, avoiding the additional occupation of area on the horizontal workbench, making the whole machine structure more compact. The driving system adopts the modular combination of the "transfer moving cylinder 52" and the "transfer lifting cylinder 53", which respectively accurately controls the movement of the transfer material taking rod 54 in the horizontal (X / Y-axis) and vertical (Z-axis) two degrees of freedom. The pneumatic driving mode responds quickly and moves sharply, which is very suitable for short-distance, high-frequency point-to-point handling tasks, and can quickly and smoothly transfer the pin from the feed positioning mechanism 4 to the positioning feed assembly 62, effectively connecting the feeding and feeding two process links, and providing key support for improving the production rhythm of the whole machine. Transfer between the "feed positioning mechanism 4" and "positioning feed assembly 62" two fixed stations, without participating in the final pressing and height setting action. The function specialization makes the positioning transfer mechanism 5 and the lower height setting assembly mechanism 7 not interfere with each other in space and time, avoiding complex motion avoidance logic and reducing the complexity of the control system.

[0028] The transmission module 61 comprises a driving cylinder 611, a transmission guide rail 612 and a transmission sliding plate 613. The driving cylinder 611 is arranged on the second workbench 12, the transmission guide rail 612 is arranged on the second workbench 12, and the transmission sliding plate 613 is arranged on the transmission guide rail 612 in a sliding manner. The driving cylinder 611 is used to drive the transmission sliding plate 613 to slide along the transmission guide rail 612. The positioning feeding assembly 62 and the positioning assembly jig 63 are arranged on the transmission sliding plate 613. In this embodiment, the driving cylinder 611 serves as a power source, and by pushing the transmission sliding plate 613 arranged on the transmission guide rail 612 in a sliding manner, precise linear reciprocating motion is realized. The key innovation lies in that the positioning feeding assembly 62 (responsible for receiving and temporarily storing the pins sent by the transfer mechanism) and the positioning assembly jig 63 (used for carrying and positioning the radiators to be assembled) are rigidly fixed on the same transmission sliding plate 613. This design makes the relative spatial position between the two functional units remain constant before and after each movement. When the transmission sliding plate 613 is driven by the driving cylinder 611 to accurately switch between the "feeding position" and the "assembly position", the alignment relationship between the feeding hole below the positioning feeding assembly 62 and the rivet hole of the radiator on the positioning assembly jig 63 is always maintained. This fundamentally eliminates the cumulative error that may be caused by driving the two assemblies separately, greatly simplifies the control logic, and ensures that the pins can be extremely accurately placed into the target hole, laying a solid foundation for the subsequent high-pressure assembly process.

[0029] The positioning feeding assembly 62 comprises a feeding fixed seat 621 and a positioning sleeve 622. The feeding fixed seat 621 is arranged on the transmission sliding plate 613, and the positioning sleeve 622 is arranged on the feeding fixed seat 621. The positioning sleeve 622 is used for pin positioning. In this embodiment, the feeding fixed seat 621 is rigidly connected to the transmission sliding plate 613, ensuring the stability and certainty of the position of the assembly as a whole. The positioning sleeve 622, as a precision component directly contacting the pin, has an inner hole size that is precisely machined and forms a high-precision gap fit with the outer diameter of the pin to be assembled. When the positioning transfer mechanism 5 places the pin into the positioning sleeve 622, the inner wall of the sleeve can effectively correct the possible slight attitude deviation of the pin and firmly restrict it on the correct vertical axis. The final "guiding" function of the pin is concentrated on a small and precise sleeve rather than the entire fixed seat. Even if the inner wall of the positioning sleeve 622 is worn out after long-term use, the precision can be restored by replacing the sleeve component at a relatively low cost, without the need to replace the entire fixed seat, greatly reducing maintenance costs and downtime.

[0030] The assembly support 71 is provided with a plurality of lifting guide rods 711, the assembly transmission seat 73 is slidingly arranged on the lifting guide rods 711, the assembly driving electric cylinder 72 is a servo electric cylinder, the assembly buffer seat 74 is provided with a buffer spring 741, the buffer spring 741 is provided with a connecting block 742, and the assembly height fixing rod 75 is arranged on the connecting block 742. In the embodiment, the multi-point guiding mode effectively limits the deflection or shaking that may be generated in the movement process of the transmission seat, and ensures the absolute verticality of the downward path thereof, which is a fundamental prerequisite for realizing the accurate centering of the rivet and the riveting hole of the radiator. In particular, the servo electric cylinder is adopted as the driving source in the embodiment, and compared with the ordinary cylinder or hydraulic cylinder, the servo electric cylinder has the accurate position, speed and pressure control capability. Through program setting, the servo electric cylinder can accurately control the pressing stroke and the final stop position of the assembly height fixing rod 75, thereby directly determining the final height of the rivet pressed into the radiator, that is, realizing the core process requirement of the "height fixing" assembly. The digital control mode not only has much higher accuracy than the mechanical limiting, but also gives the equipment high flexibility, and can quickly adapt to the radiators and rivets of different specifications through parameter adjustment, greatly improving the universality of the equipment. The buffer spring 741 arranged between the assembly buffer seat 74 and the assembly height fixing rod 75 constitutes a delicate "flexible buffer link". When the pressing head at the tail end of the assembly height fixing rod 75 contacts the rivet and starts to press, the spring is first compressed, and plays a buffering role. This makes the pressing process change from "rigid impact" to "flexible pressing", effectively eliminates the instantaneous rigid collision caused by the slight alignment error or part tolerance, and prevents the damage of the rivet head or the surface of the radiator. More importantly, the buffer structure can absorb and balance the pressure, ensure that the rivet is smoothly pressed under constant micro-pressure, avoid the riveting deformation or loosening caused by the pressure mutation, and ensure the final assembly quality and product consistency.

[0031] As shown in Figures 1-6 A radiator rivet height fixing automatic assembly method, which adopts the automatic assembly equipment and comprises the following steps: Step S1, preparation and positioning: different types or specifications of pins are respectively delivered to the feeding positioning mechanism 4 by the first feeding mechanism 2 and the second feeding mechanism 3 for accurate positioning; the positioned pins are grabbed and placed in the positioning sleeve 622 of the positioning feeding assembly 62 by the positioning transfer mechanism 5, so that the lower end surface of the pin is in contact with the bottom reference surface of the positioning sleeve 622, and the height of the pin is prepared; step S2, assembly alternation: the positioning feeding assembly 62 carrying the pins with prepared height is moved to the directly below the height assembly mechanism 7 by the transmission module 61; at the same time, the positioning assembly jig 63 carrying the radiator to be assembled moves synchronously with the transmission slide plate 613, and the workstations are alternated with the positioning feeding assembly 62, so that the assembly hole of the radiator to be pressed and assembled is accurately positioned below the height assembly mechanism 7; step S3, adsorption and alignment: the assembly driving cylinder 72 of the height assembly mechanism 7 drives the assembly transmission seat 73 and the assembly height rod 75 to descend until the vacuum suction nozzle at the lower end of the assembly height rod 75 contacts and vacuum adsorbs the top end of the pin in the positioning sleeve 622; step S4, pressing and final height setting: after the assembly driving cylinder 72 continues to drive the assembly transmission seat 73 to rise by a small distance, the transmission module 61 acts again to move the radiator on the positioning assembly jig 63 to the directly below the assembly height rod 75; then, the assembly driving cylinder 72 drives the entire assembly unit to descend, and the pin is pressed into the assembly hole of the radiator by the assembly height rod 75; when the connecting block 742 on the assembly buffer seat 74 contacts the preset mechanical height reference surface on the assembly support 71, the pressing action stops, and the height from the top end of the pin to the reference surface of the radiator is accurately defined, and the final height setting is realized; step S5, reset and cycle: the assembly driving cylinder 72 drives the assembly height rod 75 to rise and reset, and the vacuum adsorption is released; the transmission module 61 drives the positioning assembly jig 63 to move out, and the next empty positioning feeding assembly 62 is moved to the below the height assembly mechanism 7, and the next time the radiator is fed, and the equipment enters the next assembly cycle.

[0032] The core advantage of the method is its unique "preliminary height setting" and "final height setting" two-step height setting mechanism. In step S1, the initial height of the pin is precisely pre-set by contacting the lower end face of the pin with the bottom reference surface of the positioning sleeve 622. In the key step S4, the assembly of the connecting block 742 on the buffer seat 74 and the pre-set immovable mechanical height reference surface on the assembly support 71 is hard contacted to forcibly terminate the press-fitting process. The mechanical hard limit eliminates the height error caused by the repeated positioning accuracy of the electric cylinder, system elastic deformation and other factors, ensuring that the height from the top of each rivet to the radiator reference surface has high consistency and repeatability after press-fitting, and the product quality is stable and reliable. The whole method has clear step division and strict logic, forming a complete automatic closed loop. From material preparation, precise positioning, intelligent grabbing, work station alternation to press-fitting and height setting and resetting cycle, each link is seamlessly connected. Through the precise control of the transmission module 61, the efficient and non-interference alternation of the positioning and feeding assembly 62 and the positioning assembly jig 63 is realized, so that the pin grabbing and the radiator press-fitting two processes can be completed in one assembly station, greatly shortening the assembly cycle of single product and improving the production efficiency of the whole line. The method designs a flexible assembly strategy combining buffering and adsorption. In steps S3 and S4, the existence of the assembly buffer seat 74 can effectively absorb the impact force generated in the press-fitting process, preventing damage to the precise pin or radiator fin. At the same time, vacuum adsorption is used throughout the process to transfer and fix the pin, avoiding the scratches or positioning deviation that may be caused by mechanical clamping, ensuring the stable posture and accurate alignment of the pin during transfer and press-in, thereby significantly reducing the defective product rate. By adjusting the settings of the positioning sleeve 622, the positioning assembly jig 63 and the mechanical height reference surface, the height setting and assembly requirements of different specifications of radiators and rivets can be conveniently adapted, enhancing the flexibility of the production line and providing convenience for product upgrading or multi-specification co-line production. The application ensures the key height setting and assembly precision of the product, and has significant advantages in efficiency, reliability and adaptability, and is suitable for large-scale, high-quality automatic production requirements in the radiator manufacturing industry.

[0033] In step S1, the preliminary height is controlled by the depth of the inner cavity of the positioning sleeve 622, which determines the initial protrusion height of the pin before press-fitting, providing accurate pre-positioning for the subsequent final height. In this embodiment, the positioning sleeve 622 is a precisely machined mechanical component, and the depth of its inner cavity is a fixed physical dimension, unaffected by system fluctuations or electrical signal interference. When the positioning transfer mechanism 5 places the pin into the positioning sleeve 622 and makes the lower end surface of the pin tightly contact the sleeve bottom reference surface, the initial height of the top end of the pin is strictly limited to the depth of the inner cavity of the sleeve. The mechanical hard positioning method fundamentally eliminates the pre-positioning height deviation caused by visual positioning errors or the positioning accuracy of the robot, laying a precise and consistent foundation for the subsequent final press-fitting. By dividing the final stringent assembly total tolerance requirement into two relatively easy-to-control and mutually verifiable stages, "preliminary height" and "final height", the preliminary height ensures that each pin entering the assembly process starts from a unified and accurate "starting line". This allows the subsequent height adjustment assembly mechanism 7 to focus on completing a single, stroke-determined press-in action without needing to compensate for the large initial height difference while grasping the pin, greatly simplifying the control logic of the final press-fitting step and reducing the technical difficulty and cost of achieving the final accuracy.

[0034] In steps S2 and S4, the action of the drive cylinder 611 of the transmission module 61 and the action of the assembly drive cylinder 72 are cooperatively controlled by the same programmable logic controller, ensuring that the alternating motion of the positioning and feeding assembly 62 and the positioning assembly jig 63 seamlessly connects with the press-fitting action in terms of timing, preventing interference. In this embodiment, precise synchronization and seamless connection of motion timing are achieved. The PLC integrates the horizontal alternating motion of the positioning and feeding assembly 62 and the positioning assembly jig 63 with the vertical pick-up and press-fitting action of the assembly height adjustment rod 75 into a highly coordinated automatic cycle through internal pre-set precise control program. The controller can instruct the action start, sequence and speed of each execution component with millisecond-level precision, ensuring that, for example, before the assembly height adjustment rod 75 descends to absorb the pin, the positioning and feeding assembly 62 is accurately positioned and stationary; and before the press-fitting action is triggered, the heat sink on the positioning assembly jig 63 has completely replaced the positioning and feeding assembly 62 into the work station. This "hard linkage" cooperative control fundamentally eliminates the risk of motion interference or even collision between structural components caused by communication delay or timing disorder of multiple independent controllers, greatly improving the safety and stability of the equipment operation. Since all motion instructions are issued and processed by the same brain (PLC), complex data exchange and waiting time between different controllers are eliminated, making the transition of work station and assembly action more rapid and smooth, effectively shortening the total time of a single work cycle, thereby directly improving the production efficiency of the entire machine.

[0035] In step S4, the final height is achieved by the absolute downward stroke of the assembly height rod 75 and the elastic compensation of the buffer spring 741; when the connecting block 742 contacts the mechanical height reference surface, the assembly drive cylinder 72 receives a signal to stop pressing down, and the buffer spring 741 can ensure that the pin has been subjected to sufficient and constant pressing force when the hard limit is reached, avoiding damage to the parts due to overpressure; the assembly drive cylinder 72 is a servo cylinder, which adopts a pressure and position hybrid control mode in the pressing process in step S4: in the initial pressing stage, the speed control is mainly used for fast approach, and when the system detects a sharp rise in pressure, the pressure control mode is switched to precise pressure control until the preset height position and pressing force are reached, so as to balance the assembly efficiency and height accuracy. In this embodiment, the absolute downward stroke of the assembly height rod 75 is finally limited by the mechanical height reference surface, which is a non-movable physical entity, ensuring the ultimate accuracy of the pressing depth and eliminating the cumulative error caused by the backlash of the transmission system or long-term wear. At the same time, the built-in buffer spring 741 plays a key role in elastic compensation. When the connecting block 742 contacts the reference surface and the mechanical stroke is terminated, the slight compression of the spring ensures that the pressing force can be continuously and gently applied to the pin until the preset value is reached. The contradiction between "positioning" and "pressing" is solved: the mechanical reference ensures the absolute accuracy of the height, and the spring ensures that the parts can obtain sufficient and impact-free pressing force when the accurate height is reached, effectively preventing damage to the pin or radiator base caused by rigid impact. In the initial pressing stage, the speed control mode is preferred to drive the assembly height rod 75 to quickly descend, so as to shorten the idle stroke time and improve the assembly rhythm. When the pressure sensor detects a sharp rise in pressure (indicating that the pin has begun to enter the assembly hole and contact the force), the PLC immediately issues an instruction to seamlessly switch the control mode to precise pressure control. In this mode, the system aims to maintain a constant preset pressing force and smoothly press the pin to the height finally limited by the mechanical reference surface. This intelligent switching mode avoids the insufficient or excessive pressing force caused by part tolerance in pure position control, and overcomes the precision fluctuations that may occur in pure pressure control, achieving high-efficiency, high-precision and high-reliability assembly.

[0036] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A heat sink rivet height automatic assembly equipment, characterized in that: The utility model provides a kind of high-precision pin assembling device, including rack, first feeding mechanism, second feeding mechanism, feed positioning mechanism, positioning transfer mechanism, assembly positioning mechanism and fixed height assembly mechanism;The first workbench and the second workbench are provided on the rack, the first workbench and the second workbench are arranged in a stepped manner, the first feeding mechanism and the second feeding mechanism are both arranged on the first workbench, the feed positioning mechanism is arranged in the second feeding mechanism, and is used to receive the pin sent by the first feeding mechanism and the second feeding mechanism;The assembly positioning mechanism includes transmission module, positioning dispensing assembly and positioning assembly jig, the transmission module is arranged on the second workbench, and the positioning dispensing assembly and the positioning assembly jig are both arranged on the transmission module;The positioning transfer mechanism is used to place the pin from the feed positioning mechanism on the positioning dispensing assembly, and the positioning assembly jig is used to place the radiator to be assembled;When assembling, the transmission module drives the positioning dispensing assembly to drive to the lower side of fixed height assembly mechanism, and the fixed height assembly mechanism is used to grab the pin on the positioning dispensing assembly, and the positioning dispensing assembly and the positioning assembly jig are alternated under the action of the transmission module, so that the radiator on the positioning assembly jig is below the fixed height assembly mechanism, and the pin is assembled on the radiator. The fixed height assembly mechanism includes assembly support, assembly drive electric cylinder, assembly transmission seat, assembly buffer seat and assembly fixed height rod, the assembly support is arranged above the transmission device on the second workbench, the assembly drive electric cylinder is arranged above the assembly support, the assembly transmission seat is slidably arranged on the assembly support and slides along the assembly support under the action of the assembly drive electric cylinder, the assembly buffer seat is arranged on the assembly transmission seat, and the assembly fixed height rod is arranged on the assembly buffer seat, and the assembly fixed height rod is provided with a vacuum suction pipeline for suction and fixation of the pin.

2. The heat sink rivet height setting and automatic assembly apparatus of claim 1, wherein: The first feeding mechanism includes a first feeding disc, a first feeding track and a straight vibrator, the second feeding mechanism includes a second feeding disc and a second feeding track, the first feeding disc and the second feeding disc are both arranged on the first workbench, the two ends of the first feeding track are respectively connected with the first feeding disc and the feed positioning mechanism, and the two ends of the second feeding track are respectively connected with the second feeding disc and the feed positioning mechanism;The straight vibrator is arranged on the first workbench and connected with the first feeding track and the second feeding track.

3. The heat sink rivet height setting and automatic assembly apparatus of claim 2, wherein: At least two first feeding grooves are arranged on the first feeding track to synchronously feed multiple pins, a second feeding groove is arranged on the second feeding track, the feed positioning mechanism includes a positioning base, a positioning block and a positioning detection element, the positioning base is arranged on the second workbench, the positioning block is arranged on the positioning base, the positioning block is provided with a first positioning groove and a second positioning groove, the first positioning groove is connected with the first feeding groove, the second positioning groove is connected with the second feeding groove, and the positioning detection element is used to detect the pins on the first positioning groove and the second positioning groove.

4. The heat sink rivet height setting and automatic assembly apparatus of claim 1, wherein: The positioning transfer mechanism comprises a transfer support, a transfer moving cylinder, a transfer lifting cylinder and a transfer material taking rod, the transfer support is arranged at the top end of the assembly support, the transfer moving cylinder is arranged on the transfer support, the transfer lifting cylinder is arranged on the transfer moving cylinder, and the transfer material taking rod is arranged on the transfer lifting cylinder and is provided with a vacuum suction part for grabbing the pin; the transfer moving cylinder and the transfer lifting cylinder are matched to place the pin grabbed from the feeding positioning mechanism on the positioning material discharging assembly.

5. The heat sink rivet height setting and automatic assembly apparatus of claim 1, wherein: The transmission module comprises a driving cylinder, a transmission guide rail and a transmission sliding plate, the driving cylinder is arranged on the second workbench, the transmission guide rail is mounted on the second workbench, and the transmission sliding plate is slidingly arranged on the transmission guide rail; the driving cylinder is used to drive the transmission sliding plate to slide along the transmission guide rail; the positioning material discharging assembly and the positioning assembly jig are arranged on the transmission sliding plate.

6. The heat sink rivet height setting and automatic assembly apparatus of claim 1, wherein: The positioning material discharging assembly comprises a material discharging fixing seat and a positioning sleeve, the material discharging fixing seat is arranged on the transmission sliding plate, and the positioning sleeve is arranged on the material discharging fixing seat; the positioning sleeve is used for positioning the pin.

7. The heat sink rivet height setting and automatic assembly apparatus of claim 1, wherein: The assembly support is provided with a plurality of lifting guide rods, the assembly transmission seat is slidingly arranged on the lifting guide rods, the assembly driving cylinder is a servo cylinder, the assembly buffer seat is provided with a buffer spring, the buffer spring is provided with a connecting block, and the assembly height fixing rod is arranged on the connecting block.

8. A method for automatically assembling a heat sink rivet height, characterized by: The heat sink rivet height automatic assembly equipment comprises a feeding positioning mechanism, a positioning transfer mechanism, a positioning material discharging assembly, a positioning assembly jig, a height fixing assembly and a transmission module. Step S1, preparation and positioning: different types or specifications of pins are respectively conveyed to the feeding positioning mechanism by the first feeding mechanism and the second feeding mechanism for accurate positioning; the positioned pins are grabbed and placed in the positioning sleeve of the positioning material discharging assembly by the positioning transfer mechanism, so that the lower end surface of the pin is in contact with the bottom reference surface of the positioning sleeve, and the height of the pin is preliminarily fixed; Step S2, assembly alternation: the positioning material discharging assembly loaded with the pins with the preliminarily fixed height is moved to the position directly below the height fixing assembly by the transmission module; at the same time, the positioning assembly jig loaded with the heat sink to be assembled is synchronously moved with the transmission sliding plate, and the work stations of the positioning material discharging assembly and the positioning assembly jig are alternated, so that the assembly hole of the heat sink to be pressed and assembled is accurately located below the height fixing assembly; Step S3, adsorption and alignment: the assembly driving cylinder of the height fixing assembly drives the assembly transmission seat and the assembly height fixing rod to descend until the vacuum suction nozzle at the lower end of the assembly height fixing rod contacts and adsorbs the top end of the pin in the positioning sleeve; Step S4, pressing and final height fixing: after the assembly driving cylinder continues to drive the assembly transmission seat to ascend by a small distance, the transmission module is actuated again to move the heat sink on the positioning assembly jig to the position directly below the assembly height fixing rod; then, the assembly driving cylinder drives the entire assembly unit to descend, and the pin is pressed into the assembly hole of the heat sink by the assembly height fixing rod; when the connecting block on the assembly buffer seat contacts the preset mechanical height fixing reference surface on the assembly support, the pressing action is stopped, and the height from the top end of the pin to the reference surface of the heat sink is accurately defined, thereby realizing the final height fixing. Step S5, reset and cycle: the assembly drive cylinder drives the assembly height setting rod to rise and reset, and the vacuum adsorption is released; the transmission module drives the positioning assembly fixture to move out, and the next empty positioning feeding assembly is moved to below the height setting assembly mechanism, and the next radiator feeding and discharging is carried out, and the equipment enters the next assembly cycle.

9. The method of claim 8, wherein: In step S1, the preliminary height setting is controlled by the depth of the inner cavity of the positioning sleeve, and the depth determines the initial protruding height of the pin before press fitting, thereby providing accurate pre-positioning for the final height setting. In steps S2 and S4, the actions of the drive cylinder of the transmission module and the assembly drive cylinder are cooperatively controlled by the same programmable logic controller, so as to ensure that the alternating movements of the positioning feeding assembly and the positioning assembly fixture and the press fitting action are seamlessly connected in time sequence, and interference is prevented.

10. The method of claim 8, wherein: In step S4, the final height setting is realized by the absolute downward stroke of the assembly height setting rod and the elastic compensation of the buffer spring; when the connecting block contacts the mechanical height setting reference surface, the assembly drive cylinder receives the in-place signal to stop pressing down, and the buffer spring can ensure that the pin has been subjected to sufficient and constant press fitting force when the hard limit is reached, thereby avoiding damage to the parts due to overpressure. The assembly drive cylinder is a servo cylinder, and the press fitting process in step S4 adopts a pressure and position hybrid control mode: in the initial press fitting stage, speed control is mainly used for rapid approach, when the system detects that the pressure sharply rises, the mode is switched to accurate pressure control, until the preset height setting position and press fitting force are reached, so as to balance the assembly efficiency and height setting accuracy.

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