An adaptive leveling SMT nozzle device mechanism for server DIMM sockets
By using an adaptive leveling SMT nozzle device, the problem of unstable suction of server DIMM sockets was solved, realizing an efficient and stable placement process and improving production efficiency and yield.
Patent Information
- Application Number
- CN202522161791.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-13
AI Technical Summary
Existing nozzle devices have difficulty in stably picking up server DIMM sockets, resulting in bent, damaged or poorly soldered pins, low production yield, poor coordination among multiple nozzles, and difficulty in ensuring synchronization.
An adaptive leveling SMT nozzle device was designed, comprising a nozzle connector, an adaptive floating mechanism, and a large-area sealed suction plate. Combined with a mechanical guiding mechanism, it achieves multi-degree-of-freedom deflection and uniform adsorption. Through the design of spherical bearings and irregularly shaped vacuum chambers, it adapts to irregular surfaces and provides uniform adsorption force.
It improves the mounting yield and production efficiency of server DIMM sockets, reduces the risk of pin bending, simplifies the synchronous calibration of multiple nozzles, and enhances the quality consistency of the production line.
Smart Images
Figure CN224947908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surface mount technology, specifically an adaptive leveling SMT nozzle device mechanism for server DIMM sockets. Background Technology
[0002] Surface Mount Technology (SMT) is a core process in modern electronic assembly. Pick-and-place machines use nozzles to pick up components and precisely mount them onto the PCB board. Server DIMM sockets are typical large-size, high-pin-count, and heavy connectors, presenting significant challenges in their mounting: Size and weight: The body is long (usually over 112mm) and heavy, requiring the nozzle to provide suction force far exceeding that of conventional components.
[0003] Unstable structure: The top usually has irregular structures such as protruding buckles and locking rods, making it difficult for traditional nozzles to find a flat and reliable suction surface, which can easily lead to unstable suction or falling off during high-speed movement.
[0004] Extremely high precision requirements: The bottom has rows of densely packed and fragile pins (typically 0.6mm pitch or smaller). Any slight tilt during mounting can cause pin bending, damage, or poor soldering, resulting in server motherboard malfunction and reduced yield.
[0005] Existing suction nozzle devices still have the following drawbacks: General-purpose nozzles: have a small contact area, poor vacuum seal, and cannot handle irregular surfaces.
[0006] Multi-nozzle coordination: Complex calibration, poor synchronization, and components are prone to tilting due to height differences.
[0007] Mechanical grippers: risk damaging the plastic body, are slow, and may interfere with surrounding components.
[0008] Therefore, in view of the above problems, this technical solution designs an adaptive leveling SMT nozzle device mechanism for server DIMM sockets. Utility Model Content
[0009] The purpose of this invention is to provide an adaptive leveling SMT nozzle device mechanism for server DIMM sockets, so as to solve the problems mentioned in the background art.
[0010] To achieve the above objectives, this utility model provides the following technical solution: an adaptive leveling SMT nozzle device mechanism for server DIMM sockets, comprising a nozzle connector, a mechanical guide mechanism, an adaptive floating mechanism, and a large-area sealing suction plate; The nozzle connector is used to connect to the placement head of the pick-and-place machine and has a main vacuum channel inside; the adaptive floating mechanism connects the nozzle connector to the large-area sealing suction plate, and has a built-in spherical bearing, which allows the large-area sealing suction plate to perform multi-degree-of-freedom adaptive deflection within a range of ±2°. The lower surface of the large-area sealing suction plate is equipped with a suction cup, and the inside of the suction cup is equipped with an irregularly shaped vacuum cavity, which is connected to the main vacuum channel through a split air channel. The mechanical guiding mechanism includes a pair of retractable guide pins and a miniature linear actuator that drives the guide pins.
[0011] As a further embodiment of this utility model, the large-area sealing suction plate is made of a flexible elastic material.
[0012] As a further embodiment of this invention, the flexible elastic material is silicone or polyurethane.
[0013] As a further aspect of this utility model: the irregularly shaped vacuum cavity is elongated, matching the effective contact area at the top of the DIMM socket.
[0014] As a further embodiment of this utility model: the suction cup is composed of a matrix of micro-adsorption holes, the diameter of which is Φ0.5mm.
[0015] As a further embodiment of this utility model: the adaptive floating mechanism includes a connecting body, a spherical bearing, and a connecting rod; The connector is fixed to the bottom of the nozzle connector. The spherical bearing is rolled inside the connector. The connecting rod is engaged with the inner ring of the spherical bearing. The bottom end of the connecting rod is threadedly connected to the large-area sealing suction plate.
[0016] As a further embodiment of this utility model: the bottom of the connector is not in direct contact with the top of the large-area sealing suction plate, and a buffer pad is installed at the bottom of the large-area sealing suction plate.
[0017] As a further embodiment of this invention, the miniature linear actuator is a cylinder or an electromagnet.
[0018] As a further improvement of this utility model, the diversion channel consists of multiple evenly distributed channels, symmetrically distributed between the main vacuum channel and the irregularly shaped vacuum cavity.
[0019] Compared with the prior art, the beneficial effects of this utility model are: With the design of universal floating connector and large-area suction cup, the lower surface of the suction cup can completely fit the top of the uneven DIMM socket, thus ensuring that the component remains horizontal during the picking and moving process, greatly reducing the risk of pin bending and improving the placement yield.
[0020] Through the irregularly shaped vacuum cavity and porous adsorption design, the adsorption force is evenly distributed across the entire contact surface, forming a powerful "sea surface adsorption effect". The vacuum holding force far exceeds that of traditional point adsorption or cross adsorption, which is sufficient to cope with the inertial impact brought by high-speed movement.
[0021] By inserting the mechanical guide pin into the component positioning hole before suction, coarse positioning is achieved, avoiding slippage during suction, improving suction success rate and efficiency, and reducing the calibration burden on the subsequent vision system.
[0022] This device integrates leveling, adsorption, and positioning functions into one compact structure. It eliminates the need for complex multi-nozzle synchronous adjustment, making it ideal for high-speed SMT production lines and significantly improving the production efficiency and quality consistency of server motherboards. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of an adaptive leveling SMT nozzle device mechanism for server DIMM sockets.
[0024] Figure 2 This is a schematic diagram of the front temporal structure of an adaptive leveling SMT nozzle device mechanism for server DIMM sockets.
[0025] The components include: nozzle connector 10, mechanical guide mechanism 11, adaptive floating mechanism 12, large-area sealing suction plate 13, main vacuum channel 14, spherical bearing 15, diversion air channel 16, and suction cup 17. Detailed Implementation
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0030] Please see Figures 1-2 An adaptive leveling SMT nozzle device mechanism for server DIMM sockets includes a nozzle connector 10, a mechanical guide mechanism 11, an adaptive floating mechanism 12, and a large-area sealing suction plate 13. The nozzle connector 10 is used to connect to the placement head of the pick-and-place machine, and has a main vacuum channel 14 inside. The adaptive floating mechanism 12 connects the suction nozzle connector 10 and the large-area sealing suction plate 13. It has a built-in spherical bearing 15, which allows the large-area sealing suction plate 13 below to perform multi-degree-of-freedom adaptive deflection within a range of at least ±2°. The large-area sealing suction plate 13 is made of flexible elastic material. Its lower surface is a flat sealing plane. Multiple suction cups 17 are evenly arranged along the length of the plane. The suction cup 17 has an irregularly shaped vacuum cavity inside. The shape of the irregularly shaped vacuum cavity matches the effective contact area on the top of the DIMM socket. The irregularly shaped vacuum cavity is connected to the main vacuum channel 14 through multiple evenly distributed diversion air channels 16, and finally contacts the component through the micro-adsorption holes arranged in a matrix on the lower surface of the suction cups 17. The mechanical guiding mechanism 11 includes a pair of retractable guide pins symmetrically arranged on both sides of the nozzle connector 10. The guide pins are driven by a miniature linear actuator and can extend and retract independently of the large-area sealing suction plate 13. The diameter of the guide pins forms a clearance fit with the positioning hole (or process hole) on the DIMM socket body.
[0031] In this embodiment of the invention, the suction nozzle connector 10 is made of aluminum alloy, the flexible elastic material is made of silicone, polyurethane, etc., and the shape of the irregular vacuum cavity is preferably long strip. Miniature linear actuators are preferably cylinders or electromagnets.
[0032] In one embodiment of the present invention, the mechanical guiding mechanism 11 further includes a connecting body fixed to the bottom of the suction nozzle connector 10. A spherical bearing 15 is rolled inside the connecting body, and a connecting rod is fitted to the inner ring of the spherical bearing 15. The bottom end of the connecting rod is threadedly connected to the large-area sealing suction plate 13. Through the cooperation between the connecting body, the spherical bearing 15, and the connecting rod, the large-area sealing suction plate 13 is kept to rotate adaptively at multiple angles around the center of the spherical bearing 15. Specifically, the bottom of the connector is not in direct contact with the top of the large-area sealing suction plate 13, and a buffer pad is installed at the bottom of the large-area sealing suction plate 13 to keep the connecting rod and the ball bearing 15 able to swing freely. The large-area sealing suction plate 13 is integrally molded from wear-resistant silicone. The elongated vacuum cavity is connected to the main vacuum channel 14 through four symmetrically distributed diversion air channels 16. Within the area covered by the vacuum cavity, there are suction cups 17 arranged in a matrix. Each suction cup 17 consists of several micro-adsorption holes with a diameter of Φ0.5mm.
[0033] On both sides of the nozzle connector 10, two miniature cylinders are fixed by mounting bases. The piston rod of the miniature cylinder is equipped with a guide pin made of hard alloy. The stroke of the guide pin can be adjusted by the limit screw on the cylinder to ensure that its extension length can be accurately inserted into the component hole depth and that it does not affect the placement after retraction.
[0034] The specific operation is as follows: Positioning and descent: The placement head moves above the feeder, the micro cylinder actuates, driving the guide pins on both sides to extend downwards, the placement head descends, and the guide pins are precisely inserted into the positioning holes at both ends of the DIMM socket.
[0035] Adaptive and Pickup: The placement head continues to descend slightly, and the silicone sealing surface of the suction cup 17 contacts the top of the DIMM socket. Under the action of contact force, the large-area sealing suction plate 13 automatically adjusts its angle through the spherical bearing 15, so that its lower surface completely adheres to the irregular surface of the component top, forming a reliable seal. At this time, the vacuum generator starts, and the powerful suction force acts evenly through the adsorption hole matrix, firmly adsorbing the component.
[0036] Transfer: The guide pin retracts, the placement head is lifted and moves at high speed to the target position on the PCB.
[0037] Placement: After precise positioning by the vision system, the placement head descends, the vacuum is released, and the DIMM socket is smoothly placed onto the PCB pad with a controllable placement force, completing one placement cycle.
[0038] It should be understood that in this application, all rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each part is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. It should also be understood that all parts in this application are made of metal or plastic materials with suitable strength in the relevant field to ensure that their structural rigidity meets the actual requirements.
[0039] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. An adaptive leveling SMT nozzle device mechanism for server DIMM sockets, characterized in that, It includes a suction nozzle connector (10), a mechanical guide mechanism (11), an adaptive floating mechanism (12), and a large-area sealing suction plate (13). The nozzle connector (10) is used to connect to the placement head of the pick-and-place machine and has a main vacuum channel (14) inside; the adaptive floating mechanism (12) connects the nozzle connector (10) and the large-area sealing suction plate (13), and has a built-in spherical bearing (15) to allow the large-area sealing suction plate (13) to perform multi-degree-of-freedom adaptive deflection within a range of ±2°; The large-area sealing suction plate (13) has a suction cup (17) on its lower surface. The suction cup (17) has an irregularly shaped vacuum cavity inside. The irregularly shaped vacuum cavity is connected to the main vacuum channel (14) through a split air channel (16). The mechanical guiding mechanism (11) includes a pair of retractable guide pins and a miniature linear actuator that drives the guide pins.
2. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 1, characterized in that, The large-area sealing suction plate (13) is made of a flexible elastic material.
3. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 2, characterized in that, The flexible elastic material is silicone or polyurethane.
4. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 1, characterized in that, The irregularly shaped vacuum cavity is elongated and matches the effective contact area at the top of the DIMM socket.
5. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 1, characterized in that, The suction cup (17) is composed of a matrix of micro-adsorption holes with a diameter of Φ0.5mm.
6. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 1, characterized in that, The adaptive floating mechanism (12) includes a connecting body, a spherical bearing (15), and a connecting rod; The connector is fixed at the bottom of the nozzle connector (10), the spherical bearing (15) is rolled inside the connector, the connecting rod is engaged with the inner ring of the spherical bearing (15), and the bottom end of the connecting rod is threadedly connected to the large-area sealing suction plate (13).
7. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 6, characterized in that, The bottom of the connector is not in direct contact with the top of the large-area sealing suction plate (13), and a buffer pad is installed at the bottom of the large-area sealing suction plate (13).
8. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 1, characterized in that, The miniature linear actuator is a cylinder or an electromagnet; 9. The adaptive leveling SMT nozzle device mechanism for server DIMM sockets according to claim 1, characterized in that, The diversion channel (16) consists of multiple evenly distributed channels, symmetrically distributed between the main vacuum channel (14) and the irregularly shaped vacuum cavity.