Flexible mounting head with self-adapting adsorption function

Abstract

The utility model discloses a flexible mounting head with self-adaptive adsorption function, which is composed of a hollow motor, a stud, a connecting seat, an extension pipe, a suction nozzle and an elastic structure connected in sequence. The hollow motor is provided with a hollow channel and is rotatable. The stud is fixedly connected with the output end of the motor and communicates with the channel. The connecting seat is connected with the stud away from the motor. A main air inlet is arranged in the connecting seat to communicate with the channel of the stud. A plurality of shunt air inlets are arranged on the end of the connecting seat away from the stud to communicate with the main air inlet. The inner wall of the shunt air inlet is precisely processed. The extension pipe is slidably connected with the shunt air inlet. The suction nozzle is made of silica gel and is arranged on the end of the extension pipe away from the connecting seat. The channel of the suction nozzle communicates with the channel of the extension pipe. The elastic structure is arranged between the extension pipe and the connecting seat. The mounting head can be self-adaptively adjusted through the flexible deformation of the suction nozzle, the sliding of the extension pipe and the elastic structure. The problems of poor adsorption and sealing and deviation of the mounting position angle of special-shaped components are solved. The mounting quality is ensured, and the continuous working capacity is improved.

Description

Technical Field

[0001] This application belongs to the field of mounting technology, and more specifically, relates to a flexible mounting head with adaptive adsorption function. Background Technology

[0002] In the electronics manufacturing industry, the placement head of a pick-and-place machine is the core component for accurately placing electronic components from the tray to the substrate. Currently, mainstream placement heads mainly rely on a vacuum suction structure, using vacuum nozzles to pick up and place electronic components from the tray to the substrate. However, with the continuous enrichment of electronic component categories, especially the widespread application of special components such as connectors with irregular pin arrangements and non-standard packaged sensors, the technical limitations of traditional placement heads are becoming increasingly apparent.

[0003] From the perspective of vacuum nozzles, existing technologies can only accommodate conventional components with regular appearance and uniform size. For some irregularly shaped components with uneven structures, fixed-shape nozzles are unable to form a stable sealing and adsorption area with the component surface, which can easily lead to component misalignment during transfer. This can result in misalignment with the substrate pads during mounting, leading to quality defects such as loose bonding and poor soldering.

[0004] From an overall structural perspective, traditional placement heads employ a rigid connection design, lacking flexible adjustment capabilities between the pickup end and the drive mechanism. In actual placement, components and substrates are prone to slight positional or angular deviations, and the rigid structure cannot compensate for these deviations through its own deformation. This results in hard contact during bonding, which can lead to bending of component leads, cracking of the housing, and potential localized deformation of the substrate, reducing placement yield.

[0005] Therefore, there is an urgent need for a flexible mounting head structure that can adapt to a variety of components and avoid damage from hard contact. Summary of the Invention

[0006] The purpose of this application is to provide a flexible mounting head with adaptive adsorption function to solve the technical problems existing in the prior art.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: A flexible mounting head with adaptive adsorption function is provided, characterized in that it includes: a hollow motor; a column head, the column head having a tubular structure and connected to the hollow motor; a connecting seat, disposed at the end of the column head away from the hollow motor, the connecting seat having a main air inlet communicating with the column head, the end of the connecting seat away from the column head having multiple branch air channels, a telescopic tube extending from one end of the branch air channel being slidably connected inside the branch air channels, a suction nozzle being disposed at the end of the telescopic tube away from the connecting seat, and an elastic structure being provided between the telescopic tube and the connecting seat, so that the telescopic tube can return to its original position after sliding relative to the branch air channels and after the external force is removed.

[0008] Optionally, the connection between the column head and the connecting seat is a detachable connection. The connecting seat is provided with a protrusion. The end of the main air intake that is away from the split air intake is connected to the surface of the protrusion, and the protrusion extends into the interior of the column head.

[0009] Optionally, a sealing groove is formed on the outer peripheral surface of the protrusion, and a sealing ring is provided inside the sealing groove. The inner and outer ends of the sealing ring abut against the inner sidewall of the column head and the inner sidewall of the sealing groove, respectively.

[0010] Optionally, a piston sleeve is fitted at one end of the telescopic tube located in the diversion air passage. An annular groove is provided on the outer circumferential surface of the piston sleeve, and a rubber ring with its outer end abutting against the inner wall of the diversion air passage is provided inside the annular groove.

[0011] Optionally, a limiting member is provided at the end of the telescopic tube away from the main air intake, the limiting member being used to restrict the telescopic tube from sliding out of the diversion air intake.

[0012] Optionally, the elastic structure includes a return spring and a connector. The connector is fixedly sleeved on the outside of the telescopic tube extending out of the diversion air passage. The return spring is sleeved on the telescopic tube. The two ends of the telescopic tube are respectively connected to the connector and the connecting seat.

[0013] Optionally, the inner curved surface of the telescopic tube away from the connecting seat is provided with a closed arc-shaped groove along the circumference. A suction tube is provided inside the telescopic tube, with one end extending to the outside of the telescopic tube. A spherical part is provided at one end of the suction tube inside the telescopic tube. The spherical part matches and cooperates with the arc-shaped groove to form a rotating pair. The end of the suction tube extending to the outside of the telescopic tube is connected to the suction nozzle.

[0014] Optionally, there is frictional damping between the mating surfaces of the spherical portion and the arc-shaped annular groove to limit the rotational speed of the straw relative to the telescopic tube, while ensuring that the straw can be stably maintained at any rotational position.

[0015] Optionally, the inner wall of the telescopic tube is spirally provided with a spiral groove along its length.

[0016] The beneficial effects of the flexible mounting head with adaptive adsorption function provided in this application are as follows: Compared with the prior art, this application solves the problems of poor adsorption and sealing of irregularly shaped components and deviation of mounting position angle by means of flexible deformation of the nozzle, sliding of the telescopic tube and adaptive adjustment of the elastic structure, so as to ensure mounting quality and improve continuous working capability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of the flexible mounting head with adaptive adsorption function provided in the embodiments of this application; Figure 2 for Figure 1 An enlarged view of point A shown; Figure 3 A cross-sectional view of the flexible mounting head with adaptive adsorption function provided in an embodiment of this application; Figure 4 This is a cross-sectional view of the telescopic tube provided in an embodiment of this application.

[0019] The following are the labeling elements in the figure: 1. Hollow motor; 2. Column head; 3. Connecting seat; 31. Main air intake; 32. Diverter air intake; 33. Protrusion; 331. Sealing groove; 332. Sealing ring; 4. Telescopic tube; 41. Limiting component; 42. Arc-shaped annular groove; 43. Spiral groove; 5. Suction nozzle; 6. Elastic structure; 61. Return spring; 62. Connecting component; 7. Piston sleeve; 71. Annular groove; 72. Rubber ring; 8. Suction tube; 81. Spherical part. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Now combined Figures 1 to 4 This application describes a flexible mounting head with adaptive adsorption function provided in an embodiment.

[0025] The flexible mounting head of this embodiment consists of a hollow motor 1, a column head 2, a connecting seat 3, a telescopic tube 4, a suction nozzle 5, and an elastic structure 6. These components are connected sequentially and work together. The specific structure and their coordination are as follows: The column head 2 has a tubular structure and is connected to the hollow motor 1; the connecting seat 3 is located at the end of the column head 2 away from the hollow motor 1; the connecting seat 3 has a main air intake 31 communicating with the column head 2; the end of the connecting seat 3 away from the column head 2 has multiple branch air passages 32; a telescopic tube 4 extending from one end of each branch air passage 32 is slidably connected inside the branch air passage 32; a suction nozzle 5 is located at the end of the telescopic tube 4 away from the connecting seat 3; and an elastic structure 6 is provided between the telescopic tube 4 and the connecting seat 3 so that the telescopic tube 4 can slide relative to the branch air passages 32 and return to its original position after the external force is removed.

[0026] The hollow motor 1 is a special type of motor with a hollow structure for its central shaft or rotor. This central shaft or rotor is the output end of the hollow motor 1, allowing cables, optical fibers, fluid pipes, or other mechanical components to pass through it. This saves installation space while enabling synchronous power transmission and material or signal delivery. This application primarily uses it for synchronous power transmission and gas delivery. Specifically, a tubular column head 2 is fixedly connected to and communicates with the output end of the hollow motor 1. Therefore, the column head 2 can rotate synchronously with the hollow motor 1. Simultaneously, the internal channel of the column head 2 is connected to the hollow channel of the hollow motor 1, together forming the basic pathway for gas flow.

[0027] Traditional placement heads, when the placement scenario requires processing multiple small workpieces simultaneously or improving the adsorption stability of a single workpiece, cannot meet the demand for synchronous negative pressure supply to multiple adsorption points with a single air channel. Based on this, a diversion component is set up as the air channel transfer and diversion gas, which is the aforementioned connector 3.

[0028] Specifically, the connecting seat 3 is connected to the end of the column head 2 away from the hollow motor 1. The connecting seat 3 has a main air intake duct 31 inside, which is connected to the internal channel of the column head 2 to form a transfer path for gas flow. At the end of the connecting seat 3 away from the column head 2, multiple branch air passages 32 are distributed circumferentially. All of the multiple branch air passages 32 are connected to the main air intake duct 31, thereby realizing the diversion of negative pressure.

[0029] Traditional placement heads, in actual placement processes, suffer from various challenges. These include differences in workpiece height, the uneven shape of irregularly shaped components, and the fixed connection point of the nozzle 5 (lacking telescopic functionality). Furthermore, the single air duct cannot simultaneously supply negative pressure to multiple adsorption points, meaning traditional placement heads typically only have one adsorption point and cannot fully adsorb irregularly shaped components. Therefore, due to the fixed connection point of the nozzle 5 and the limited number of adsorption points, some workpieces are easily not properly adsorbed, or the nozzle 5 may damage the workpiece. To address the issues of height adaptability and the inability to fully adsorb irregularly shaped components, telescopic adsorption components need to be added to each branch air duct 32, namely the aforementioned telescopic tube 4, nozzle 5, and elastic structure 6.

[0030] Specifically, a telescopic tube 4 is slidably connected inside each diversion airway 32. One end of the telescopic tube 4 extends outside the diversion airway 32, and the other end is located inside the diversion airway 32. The suction nozzle 5 is located at the end of the telescopic tube 4 away from the connecting seat 3 and is made of silicone. The flexibility of silicone allows the end of the suction nozzle 5 to adapt to the shape of the workpiece surface, maximizing its fit to the surface and avoiding negative pressure leakage. At the same time, the internal channel of the suction nozzle 5 is connected to the internal channel of the telescopic tube 4, ultimately forming a complete gas flow path to achieve the adsorption function of the workpiece.

[0031] During the adsorption process, the telescopic tube 4 and the suction nozzle 5 are compressed due to the height of the adsorbed workpiece and the unevenness of the irregularly shaped components. This causes the telescopic tube 4 to retract into the distribution air channel 32, and the suction nozzle 5 moves along with the telescopic tube 4. Therefore, the suction nozzle 5 does not damage the workpiece. Furthermore, each of the multiple distribution air channels 32 is equipped with a set of telescopic tubes 4, suction nozzles 5, and elastic structures 6. Thus, the suction nozzle 5 can be extended and retracted to adsorb various uneven parts of irregularly shaped components. However, without an automatic reset mechanism, the telescopic tube 4 may remain in the retracted state during the next adsorption, preventing the suction nozzle 5 from contacting the next workpiece. Additionally, the suction nozzle 5 requires pressure when adsorbing workpieces. Therefore, an elastic structure 6 is provided between the telescopic tube 4 and the connecting seat 3. This elastic structure 6 ensures that the telescopic tube 4 and the suction nozzle 5 automatically adapt to workpieces of different heights during continuous placement, improving the continuous working capability of the equipment.

[0032] In summary, the synergistic effect of each component can solve the problems arising from the mounting of irregularly shaped components: Firstly, regarding the issue that the uneven shape of irregularly shaped components makes it difficult for the nozzle 5 to form a stable seal with the surface of the component, the flexible deformation of the nozzle 5 and the telescopic sliding of the telescopic tube 4 ensure the stability of the seal; Secondly, regarding the issue that there may be slight positional or angular deviations between the component and the substrate during the actual mounting process, the adaptive adjustment function of the elastic structure 6 and the telescopic tube 4 is used to achieve flexible bonding between the two, ultimately ensuring the mounting quality.

[0033] For ease of maintenance, the aforementioned column head 2 and connecting seat 3 are connected in a detachable manner. When a component is damaged or needs cleaning, only the corresponding component needs to be replaced or cleaned, without the need for complete replacement. This reduces maintenance costs and shortens downtime.

[0034] The detachable connection between the column head 2 and the connecting seat 3 is achieved through bolts, clips, threads, etc. Based on structural simplification and cost considerations, bolts are preferred.

[0035] Specifically, the end of the connecting seat 3 facing the column head 2 has an integrally formed protrusion 33 structure. The outer diameter of the protrusion 33 is adapted to the inner diameter of the internal channel at the end of the column head 2 away from the hollow motor 1. During assembly, the protrusion 33 extends axially into the internal channel of the column head 2, and the outer wall of the protrusion 33 fits tightly with the inner wall of the column head 2. Radial positioning is achieved through the cooperation between the protrusion 33 and the inner wall of the column head 2, which enhances the coaxiality of the connection between the two and avoids affecting the overall rotational accuracy due to assembly deviation.

[0036] More specifically, the main air intake duct 31 inside the connecting seat 3 is arranged axially. When the protrusion 33 extends into the interior of the column head 2, the main air intake duct 31 is directly connected to the internal channel of the column head 2. The negative pressure delivered by the hollow channel of the hollow motor 1 passes through the internal channel of the column head 2 and directly enters the main air intake duct 31 on the connecting seat 3. Then it is diverted to each diversion air duct 32 on the connecting seat 3 and finally transmitted to the nozzle 5 through the telescopic tube 4.

[0037] This structural design not only strengthens the connection and sealing between the protrusion 33 and the column head 2, reducing gas leakage, but also ensures that the subsequent suction nozzle 5 can stably adsorb the workpiece by directly connecting the main air intake 31 to the internal channel of the column head 2.

[0038] To further improve the gas sealing performance between the column head 2 and the connecting seat 3, an annular sealing groove 331 is also provided on the outer circumferential surface of the protrusion 33 of the connecting seat 3. The sealing groove 331 is continuously arranged along the circumference of the protrusion 33, and its cross-section is any one of U-shaped, V-shaped and concave.

[0039] An elastic sealing ring 332 made of wear-resistant nitrile rubber is fitted inside the sealing groove 331. The original outer diameter of the sealing ring 332 is slightly larger than the diameter of the inner wall of the column head 2. When the connecting seat 3 is assembled with the column head 2, the protrusion 33 is inserted axially into the internal channel of the column head 2. At this time, the sealing ring 332 is subjected to bidirectional compression from the inner wall of the column head 2 and the inner wall of the sealing groove 331. The inner wall of the sealing ring 332 fits tightly with the bottom and side walls of the sealing groove 331, while the outer wall forms an interference fit with the inner wall of the column head 2, generating uniform sealing pressure between the contact surfaces. The cooperation between the sealing groove 331 and the sealing ring 332 can both fill the gap through the elastic deformation of the sealing ring 332 to block gas leakage and improve the negative pressure utilization efficiency, and adapt to the rotational movement of the mounting head to maintain a stable seal under dynamic working conditions.

[0040] Similarly, to optimize the sealing performance between the telescopic tube 4 and the diversion air passage 32, and to ensure smooth relative sliding between them, a piston sleeve 7 is fitted on the outer circumferential surface of the end of the telescopic tube 4 located inside the diversion air passage 32. The piston sleeve 7 is made of high-strength engineering plastic, possessing good wear resistance and self-lubricating properties. The inner diameter of the piston sleeve 7 slides in conjunction with the outer circumferential surface of the telescopic tube 4 to ensure smooth axial sliding of the telescopic tube 4. The outer wall of the piston sleeve 7 is fixedly connected to the inner wall of the diversion air passage 32 for structural positioning. In addition, an annular groove 71 is formed along the circumference of the outer circumferential surface of the piston sleeve 7, and an elastic rubber ring 72 is installed in the groove. The whole can maintain a reliable seal while ensuring smooth sliding of the telescopic tube 4. The piston sleeve 7, the annular groove 71, and the elastic rubber ring 72 combine to form a piston ring. This piston ring is a low-friction piston ring, which has a low-friction effect to avoid excessive friction between the piston ring and the inner wall of the diversion air passage 32 when the piston ring slides.

[0041] To prevent the telescopic tube 4 from accidentally sliding out of one end of the diversion air passage 32, a special limiting member 41 is provided at the air inlet of that end of the diversion air passage 32. The limiting member 41 can be annular, block-shaped, arc-shaped, etc., and from the perspective of contact area, an annular structure is preferred. Specifically, the limiting member 41 is provided at the end of the telescopic tube 4 away from the main air intake passage 31. When the telescopic tube 4 slides to its limit position outside the diversion air passage 32, the limiting member 41 abuts against the piston sleeve 7, thereby restricting its further outward movement, effectively preventing the telescopic tube 4 from completely detaching from the diversion air passage 32, and without obstructing the axial sliding of the telescopic tube 4.

[0042] As mentioned above, the elastic structure 6 is the core component for realizing the adaptive adjustment of the telescopic tube 4. In this embodiment, it is specifically composed of a return spring 61 and a connector 62. This structure has multiple advantages: First, the spring is directly sleeved on the outside of the telescopic tube 4, resulting in a compact structure that meets the miniaturization requirements of the mounting head; second, the elastic parameters of the return spring 61 can be flexibly adjusted according to the weight and material of different workpieces, enhancing the versatility of the mounting head.

[0043] Specifically, the elastic structure 6 includes a return spring 61 and a connector 62. The connector 62 is fixedly sleeved on the outside of the telescopic tube 4 extending out of the diversion air passage 32. The return spring 61 is sleeved on the telescopic tube 4. The two ends of the telescopic tube 4 are respectively connected to the connector 62 and the connecting seat 3.

[0044] More specifically, when the nozzle 5 of the flexible mounting head contacts the workpiece to be adsorbed, the workpiece exerts a reverse force on the nozzle 5, pushing the telescopic tube 4 into the distribution air channel 32. At this time, the connector 62 moves synchronously with the telescopic tube 4 towards the connecting seat 3, compressing the return spring 61 and accumulating elastic potential energy. During this process, the elastic force of the return spring 61 acts as a buffer, preventing damage caused by rigid contact between the nozzle 5 and the workpiece. Simultaneously, the deformation of the return spring 61 adaptively compensates for minor height differences on the workpiece surface. When the nozzle 5 detaches from the workpiece, the return spring 61 releases the accumulated elastic potential energy, pushing the connector 62 to extend the telescopic tube 4 outwards from the distribution air channel 32 until it returns to its initial position, preparing for the next adsorption action.

[0045] In actual assembly scenarios, since some workpieces have multi-angle tilted or curved surfaces, in order to ensure that the nozzle 5 can fit more tightly and stably against the surfaces of workpieces with different shapes, the telescopic tube 4 and the nozzle 5 are connected by a rotatable structure.

[0046] Specifically, at the end of the telescopic tube 4 near the nozzle 5, a closed arc-shaped groove 42 is machined circumferentially on the inner curved surface of the telescopic tube 4. A suction tube 8 is installed inside the telescopic tube 4, preferably made of lightweight metal to ensure structural strength while reducing overall weight. One end of the suction tube 8 extends to the outside of the telescopic tube 4 to connect to the nozzle 5; the other end is located inside the telescopic tube 4 and has an integrally formed spherical portion 81. The spherical portion 81 does not obstruct the air intake end of the telescopic tube 4. The internal channel of the suction tube 8 runs through the entire tube body and the spherical portion 81, sequentially connecting with the internal channels of the telescopic tube 4 and the nozzle 5 to form a continuous gas passage. Negative pressure can be sequentially transmitted to the nozzle 5 through the telescopic tube 4 and the suction tube 8, ensuring that the adsorption function is not affected by the rotating structure. Furthermore, the outer diameter of the spherical portion 81 matches the radius of the arc surface of the arc-shaped groove 42, and the surface of the spherical portion 81 is precision ground to form a smooth spherical structure.

[0047] More specifically, since the spherical surface of the spherical part 81 and the inner arc surface of the arc-shaped groove 42 are completely matched, the two form a spherical rotating pair. Therefore, the spherical part 81 can rotate around its own center in the arc-shaped groove 42 at multiple angles, and during the rotation, the spherical surface and the inner arc surface of the groove always remain in close contact.

[0048] To facilitate the replacement of the nozzle 5, the end of the straw 8 extending to the outside of the telescopic tube 4 is detachably connected to the nozzle 5, ensuring that the nozzle 5 is securely installed and easy to replace.

[0049] Therefore, by matching and cooperating with the spherical part 81 and the arc-shaped annular groove 42 to form a rotating pair, the suction nozzle 5 can rotate flexibly to adapt to the tilt angle or curvature of the surface of the workpiece to be adsorbed, thereby improving the adsorption stability. It can also maintain good sealing during rotation to reduce negative pressure leakage. Furthermore, the smooth mating surface reduces rotational friction, making the angle adjustment of the suction nozzle 5 more sensitive and less prone to wear during long-term use, thus extending the service life of the components.

[0050] To prevent the suction nozzle 5 from colliding with the workpiece due to the rapid rotation of the suction tube 8 caused by inertia, and to ensure that the suction tube 8 can be stably maintained after being adjusted to the target angle, there is frictional damping between the mating surfaces of the spherical part 81 and the arc-shaped annular groove 42, so as to limit the rotational speed of the suction tube 8 relative to the telescopic tube 4, and at the same time, to ensure that the suction tube 8 can be stably maintained at any rotational position.

[0051] Specifically, the spherical part 81 and the arc-shaped annular groove 42 are designed with an interference fit. The interference fit does not hinder the flexible rotation of the straw 8, and it also ensures that the mating surfaces of the two remain in close contact, generating stable frictional damping through the normal pressure of the contact surfaces. In addition, the spherical part 81 is made of an alloy material with excellent wear resistance, while the end of the telescopic tube 4 where the arc-shaped annular groove 42 is located is made of a material with a slightly lower hardness than the spherical part 81. The combination of the two materials reduces wear on the mating surfaces and further optimizes the damping stability through slight material deformation.

[0052] When the suction nozzle 5 contacts the workpiece surface and is subjected to a lateral force due to the tilt of the workpiece surface, the suction tube 8 will drive the spherical part 81 to rotate along the arc-shaped groove 42. At this time, the frictional damping of the mating surface will generate a reverse resistance to the rotation, slowing down the rotation speed of the suction tube 8 and preventing the suction nozzle 5 from swinging rapidly due to inertia and hitting the edge of the workpiece or damaging the workpiece surface.

[0053] Once the nozzle 5 is adjusted to the angle of contact with the workpiece surface, the frictional damping of the mating surface balances the gravitational force of the suction tube 8 and the minor force generated by airflow disturbance, ensuring that the suction tube 8 remains stably in its current rotational position without automatic return to center or random wobbling. For example, when mounting a workpiece with a 15° tilt angle, the suction tube 8 can remain stably stationary at that angle, ensuring that the nozzle 5 remains in close contact with the workpiece surface and preventing adsorption failure or misalignment due to angle deviation.

[0054] In addition, the damping magnitude can be flexibly adapted to different workpieces by adjusting the interference fit or the roughness of the mating surface. At the same time, it can work in conjunction with the sealing function of the spherical part 81 and the arc-shaped annular groove 42 to ensure that the tightly fitted mating surfaces provide frictional damping while maintaining good airtightness, avoiding negative pressure leakage, stabilizing the suction force of the nozzle 5, and further ensuring the reliability of the flexible mounting head.

[0055] Furthermore, the nozzle 5 can only attach workpieces with an inclination angle between 0° and 15°. This is to avoid adsorbing workpieces with a large inclination angle. The spherical part 81 rotates too much inside the arc-shaped groove 42, causing one end of the suction tube 8 to be blocked by the inner wall of the arc-shaped groove 42. Here, one end of the suction tube 8 refers to the end with the spherical part 81.

[0056] In actual mounting scenarios, traditional straight channels still face the problems of airflow pulsation and negative pressure fluctuation. When negative pressure airflow enters the telescopic tube 4, if it flows in a straight line, it is easily affected by the sudden change in airflow velocity caused by small impurities in the tube and unevenness of the inner wall of the channel, forming disordered turbulence, which ultimately leads to negative pressure fluctuation. After the turbulence is transmitted to the nozzle 5, it can cause unstable adsorption of thin workpieces and easy detachment, or even damage to micro precision workpieces due to sudden increase in negative pressure. To solve this problem, continuous spiral grooves 43 are processed on the inner side wall of the telescopic tube 4 along its axial length. The spiral grooves 43 can change the airflow pattern to achieve air pressure regulation.

[0057] Specifically, the spiral groove 43 is formed on the inner wall of the telescopic tube 4 and extends continuously spirally along the length of the telescopic tube 4 to form a complete spiral flow channel. When the negative pressure airflow enters the telescopic tube 4, guided by the spiral groove 43 on the inner wall, the airflow no longer flows in a straight line along the axis of the telescopic tube 4, but forms a rotating airflow along the path of the spiral groove 43. The orderly rotating airflow guided by the spiral groove 43 can reduce turbulence interference, make the airflow rate more uniform, and ultimately make the negative pressure transmitted to the nozzle 5 more stable.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flexible mounting head with adaptive adsorption function, characterized in that, include: Hollow motor (1); The column head (2) has a tubular structure and is connected to the hollow motor (1); A connecting seat (3) is provided at the end of the column head (2) away from the hollow motor (1). The connecting seat (3) is provided with a main air intake (31) communicating with the column head (2). The end of the connecting seat (3) away from the column head (2) is provided with multiple diversion air passages (32). A telescopic tube (4) extending out of the diversion air passage (32) is slidably connected inside the diversion air passage (32). A suction nozzle (5) is provided at the end of the telescopic tube (4) away from the connecting seat (3). An elastic structure (6) is provided between the telescopic tube (4) and the connecting seat (3) so that the telescopic tube (4) can slide relative to the diversion air passage (32) and return to its original position after the external force is removed.

2. The flexible mounting head with adaptive adsorption function as described in claim 1, characterized in that: The connection between the column head (2) and the connecting seat (3) is a detachable connection. The connecting seat (3) is provided with a protrusion (33). The end of the main air intake (31) away from the diversion air intake (32) is connected to the surface of the protrusion (33). The protrusion (33) extends into the interior of the column head (2).

3. The flexible mounting head with adaptive adsorption function as described in claim 2, characterized in that: A sealing groove (331) is provided on the outer peripheral surface of the protrusion (33), and a sealing ring (332) is provided inside the sealing groove (331). The inner and outer ends of the sealing ring (332) abut against the inner sidewall of the column head (2) and the inner sidewall of the sealing groove (331), respectively.

4. The flexible mounting head with adaptive adsorption function as described in claim 1, characterized in that: The telescopic tube (4) is fitted with a piston sleeve (7) at one end of the diversion air passage (32). The outer circumferential surface of the piston sleeve (7) is provided with an annular groove (71). Inside the annular groove (71), a rubber ring (72) with its outer end abutting against the inner wall of the diversion air passage (32) is provided.

5. The flexible mounting head with adaptive adsorption function as described in claim 1, characterized in that: A limiting member (41) is provided at one end of the telescopic tube (4) away from the main air intake (31), and the limiting member (41) is used to restrict the telescopic tube (4) from sliding out of the diversion air passage (32).

6. The flexible mounting head with adaptive adsorption function as described in claim 1, characterized in that: The elastic structure (6) includes a return spring (61) and a connector (62). The connector (62) is fixedly sleeved on the outside of the telescopic tube (4) extending out of the diversion air passage (32). The return spring (61) is sleeved on the telescopic tube (4). The two ends of the telescopic tube (4) are respectively connected to the connector (62) and the connecting seat (3).

7. The flexible mounting head with adaptive adsorption function as described in claim 1, characterized in that: The inner curved surface of the telescopic tube (4) away from the connecting seat (3) is provided with a closed arc-shaped groove (42) along the circumference. The telescopic tube (4) is provided with a suction tube (8) extending to the outside of the telescopic tube (4) at one end. The suction tube (8) is provided with a spherical part (81) at one end inside the telescopic tube (4). The spherical part (81) matches the arc-shaped groove (42) and cooperates with each other to form a rotating pair. The end of the suction tube (8) extending to the outside of the telescopic tube (4) is connected to the suction nozzle (5).

8. The flexible mounting head with adaptive adsorption function as described in claim 7, characterized in that: There is frictional damping between the mating surfaces of the spherical part (81) and the arc-shaped annular groove (42) to limit the rotational speed of the straw (8) relative to the telescopic tube (4), while ensuring that the straw (8) can be stably maintained in any rotational position.

9. The flexible mounting head with adaptive adsorption function as described in claim 7, characterized in that: The inner wall of the telescopic tube (4) is spirally provided with a spiral groove (43) along its own length direction.

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