Multi-step jacking structure with adjustable jacking height

Abstract

The utility model discloses a multi-step jacking structure with adjustable jacking height. According to the multi-step jacking structure, the top of a middle ring jacking module extends into an outer ring jacking module, the top of an inner ring jacking module extends into the middle ring jacking module, and a top plate is provided with an opening so that the top of the outer ring jacking module can extend into the opening; adjusting modules are arranged between the top plate and the outer ring jacking module, between the outer ring jacking module and the middle ring jacking module and between the middle ring jacking module and the inner ring jacking module so that height adjustment of the outer ring jacking module, the middle ring jacking module and the inner ring jacking module can be achieved. According to the utility model, the adjusting modules are arranged between the top plate and the outer ring jacking module, between the outer ring jacking module and the middle ring jacking module, and between the middle ring jacking module and the inner ring jacking module, so that the independent height adjustment of the outer ring jacking module, the middle ring jacking module and the inner ring jacking module is realized; therefore, the jacking height of each module of the multi-step jack with the same specification can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of chip manufacturing technology, and in particular to a multi-step top structure with adjustable lifting height. Background Technology

[0002] In the semiconductor chip manufacturing field, chip stacking technology is increasingly widely used as an effective means to improve chip performance and reduce chip size. Chip removal is a key process in chip stacking, its core being the safe and efficient separation of the chip from its carrier (such as DAF, Die Attach Film). To achieve this goal, various lifting devices have emerged. Among them, the multi-step lifting device, specifically designed for chip removal, has demonstrated significant application value in specific scenarios due to its unique working principle and structural design.

[0003] Multi-step lifters typically consist of an internal vacuum unit encased in a metal shell. Their core mechanical structure comprises three rectangular blocks that can be synchronously controlled by a single motor. During the lift-up operation, these three blocks lift sequentially in three steps, achieving gradual separation of the chip from the DAF through progressive force. This design significantly increases the contact area between the gripper head and the chip after chip demolding, effectively dispersing the stress generated during the lift-up process and thus reducing the risk of chip damage. It is particularly suitable for chip stacking products sensitive to mechanical stress.

[0004] While existing multi-step stackers offer advantages in specific applications, their structural design has significant limitations: the three-step stacking height of current devices is a fixed value and cannot be dynamically adjusted according to the requirements of chip stacking processes with different thicknesses. This deficiency necessitates the repeated procurement of multi-step stackers of different specifications when processing chips of varying thicknesses, increasing equipment procurement costs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multi-step lifting structure with adjustable lifting height.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model embodiment provides a multi-step lifting structure with adjustable lifting height, including: a top plate, an outer ring lifting module, a middle ring lifting module, and an inner ring lifting module. The outer ring lifting module is located above the middle ring lifting module, and the top of the middle ring lifting module extends into the outer ring lifting module. The middle ring lifting module is located above the inner ring lifting module, and the top of the inner ring lifting module extends into the middle ring lifting module. The top plate has an opening so that the top of the outer ring lifting module extends into the opening. Adjustment modules are provided between the top plate and the outer ring lifting module, between the outer ring lifting module and the middle ring lifting module, and between the middle ring lifting module and the inner ring lifting module to realize the height adjustment of the outer ring lifting module, the middle ring lifting module, and the inner ring lifting module.

[0008] In one specific embodiment, the adjustment module is a first adjustment component, a second adjustment component, or a third adjustment component; the first adjustment component is connected to the upper end of the outer ring lifting module to adjust the height of the outer ring lifting module; the second adjustment component is connected to the lower end of the outer ring lifting module to adjust the height of the middle ring lifting module; and the third adjustment component is connected to the upper end of the inner ring lifting module to adjust the height of the inner ring lifting module.

[0009] In one specific embodiment, the first adjustment component includes a first adjustment shaft and a first eccentric wheel. The first adjustment shaft passes through the upper end of the outer ring lifting module, and the first eccentric wheel is sleeved on the first adjustment shaft. Twisting the first adjustment shaft causes the first eccentric wheel to rotate and abut against the top plate to adjust the height of the outer ring lifting module.

[0010] In one specific embodiment, the second adjustment component includes a second adjustment shaft and a second eccentric wheel. The second adjustment shaft passes through the lower end of the outer ring lifting module, and the second eccentric wheel is sleeved on the second adjustment shaft. Twisting the second adjustment shaft causes the second eccentric wheel to rotate and abut against the middle ring lifting module to adjust the height of the middle ring lifting module.

[0011] In one specific embodiment, the third adjustment component includes a third adjustment shaft and a third eccentric wheel. The third adjustment shaft passes through the upper end of the inner ring lifting module, and the third eccentric wheel is sleeved on the third adjustment shaft. Twisting the third adjustment shaft causes the third eccentric wheel to rotate and abut against the middle ring lifting module to adjust the height of the inner ring lifting module.

[0012] In one specific embodiment, the outer periphery of the inner ring lifting module is further provided with a support seat, and the third adjusting shaft extends out of the side wall of the support seat.

[0013] In one specific embodiment, a first spring is sleeved on the lower end of the support base.

[0014] In one specific embodiment, the bottom of the support base abuts against a buffer platform.

[0015] In one specific embodiment, the bottom of the buffer platform is connected to a base, and a second spring is provided between the buffer platform and the base.

[0016] In one specific embodiment, the upper surface of the outer ring lifting module is further provided with a guide post, and the top plate is provided with a guide hole corresponding to the guide post.

[0017] The advantages of this utility model's multi-step top structure with adjustable lifting height compared to existing technologies are as follows: By setting adjustment modules between the top plate and the outer ring lifting module, the outer ring lifting module and the middle ring lifting module, and the middle ring lifting module and the inner ring lifting module, independent height adjustment of the outer ring lifting module, the middle ring lifting module, and the inner ring lifting module is achieved. This design allows multi-step tops of the same specification to adapt to the stacking process requirements of chips of different thicknesses by adjusting the lifting height of each module, thus solving the problem in existing technologies where different specifications of equipment need to be repeatedly purchased due to fixed lifting height.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional schematic diagram of the multi-step lifting structure with adjustable lifting height provided by this utility model;

[0021] Figure 2 A cross-sectional schematic diagram of the multi-step top structure with adjustable lifting height provided by this utility model;

[0022] Figure 3 An exploded view of the multi-step jacking structure with adjustable jacking height provided by this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0026] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0030] See Figures 1 to 3 The specific embodiment shown discloses a multi-step lifting structure with adjustable lifting height, comprising: a top plate 10, an outer ring lifting module 20, a middle ring lifting module 30, and an inner ring lifting module 40. The outer ring lifting module 20 is located above the middle ring lifting module 30, and the top of the middle ring lifting module 30 extends into the outer ring lifting module 20. The middle ring lifting module 30 is located above the inner ring lifting module 40, and the top of the inner ring lifting module 40 extends into the outer ring lifting module 20. The top plate 10 is provided with an opening 11, which allows the top of the outer ring lifting module 20 to extend into the opening 11. Adjustment modules are provided between the top plate 10 and the outer ring lifting module 20, between the outer ring lifting module 20 and the middle ring lifting module 30, and between the middle ring lifting module 30 and the inner ring lifting module 40, so as to realize the height adjustment of the outer ring lifting module 20, the middle ring lifting module 30, and the inner ring lifting module 40.

[0031] Specifically, an opening 11 is provided at the center of the top plate 10. The size of the opening 11 is slightly larger than the top outer diameter of the outer ring lifting module 20, ensuring that the top of the outer ring lifting module 20 can freely pass through and move up and down. The outer ring lifting module 20 is located at the top layer, with its top passing through the opening 11 of the top plate 10, and its bottom nested with the middle ring lifting module 30. The middle ring lifting module 30 is located in the middle layer, with its top extending into the interior of the outer ring lifting module 20, and its bottom nested with the inner ring lifting module 40. The inner ring lifting module 40 is located at the bottom layer, with its top extending into the interior of the middle ring lifting module 30, and its bottom connected to a drive device (such as a motor). Adjustment modules are respectively located between the top plate 10 and the outer ring lifting module 20, between the outer ring lifting module 20 and the middle ring lifting module 30, and between the middle ring lifting module 30 and the inner ring lifting module 40. The adjustment modules can adopt threaded adjustment mechanisms (such as bolts, nuts, or threaded sleeves), and the relative height between the modules can be finely adjusted by rotating the adjustment components. The motor drives the inner ring lifting module 40 to rise, which in turn pushes the middle ring lifting module 30 and the outer ring lifting module 20 to rise sequentially through a nested structure. After each module reaches the preset height, if further fine-tuning is required, the height can be adjusted by rotating the corresponding adjustment module.

[0032] In other words, by setting adjustment modules between the top plate 10 and the outer ring lifting module 20, the outer ring lifting module 20 and the middle ring lifting module 30, and the middle ring lifting module 30 and the inner ring lifting module 40, independent height adjustment of the outer ring lifting module 20, the middle ring lifting module 30 and the inner ring lifting module 40 is realized. This design enables multi-step top plates of the same specification to adapt to the stacking process requirements of chips of different thicknesses by adjusting the lifting height of each module, thus solving the problem in the prior art that different specifications of equipment need to be repeatedly purchased due to the fixed lifting height.

[0033] In one embodiment, the adjustment module is a first adjustment component 50, a second adjustment component 60, or a third adjustment component 70; the first adjustment component 50 is connected to the upper end of the outer ring lifting module 20 to adjust the height of the outer ring lifting module 20; the second adjustment component 60 is connected to the lower end of the outer ring lifting module 20 to adjust the height of the middle ring lifting module 30; and the third adjustment component 70 is connected to the upper end of the inner ring lifting module 40 to adjust the height of the inner ring lifting module 40.

[0034] Specifically, the first adjustment component 50 is connected to the upper end of the outer ring lifting module 20 (i.e., between the top of the outer ring lifting module 20 and the top plate 10), and is used to adjust the gap between the outer ring lifting module 20 and the top plate 10, that is, to adjust the absolute height of the outer ring lifting module 20, ensuring that the height of its top when in contact with the chip meets the process requirements. The second adjustment component 60 is connected to the lower end of the outer ring lifting module 20 (i.e., between the bottom of the outer ring lifting module 20 and the top of the middle ring lifting module 30), and is used to adjust the gap between the outer ring lifting module 20 and the middle ring lifting module 30, that is, to adjust the height of the middle ring lifting module 30 relative to the outer ring lifting module 20, compensating for the change in lifting height requirements caused by differences in chip thickness. The third adjustment component 70 is connected to the upper end of the inner ring lifting module 40 (i.e., between the top of the inner ring lifting module 40 and the bottom of the middle ring lifting module 30), and is used to adjust the gap between the middle ring lifting module 30 and the inner ring lifting module 40, that is, to adjust the absolute height of the inner ring lifting module 40, to ensure the accuracy of its lifting action, and to avoid damage to the chip due to height error.

[0035] In other words, the first adjustment component 50, the second adjustment component 60, and the third adjustment component 70 are responsible for adjusting the height of the outer ring lifting module 20, the middle ring lifting module 30, and the inner ring lifting module 40, respectively, achieving layered control of the lifting height. This design ensures that the height adjustments of each module do not interfere with each other, improving the accuracy of the adjustment. Furthermore, by adjusting the heights of the first adjustment component 50, the second adjustment component 60, and the third adjustment component 70, the same multi-step lifting structure can be adapted to stacking processes of chips with different thicknesses. For example, for thinner chips, the height of the first adjustment component 50 can be reduced, while the height of the second adjustment component 60 can be appropriately increased to compensate for the lifting amount of the middle ring lifting module 30.

[0036] In one embodiment, the first adjustment component 50 includes a first adjustment shaft 51 and a first eccentric wheel 52. The first adjustment shaft 51 passes through the upper end of the outer ring lifting module 20, and the first eccentric wheel 52 is sleeved on the first adjustment shaft 51. Twisting the first adjustment shaft 51 causes the first eccentric wheel 52 to rotate and abut against the top plate 10 to adjust the height of the outer ring lifting module 20.

[0037] Specifically, there are two sets of first adjustment components 50, located on both sides of the upper end of the outer ring lifting module 20, with the first adjustment shaft 51 extending out of the side wall of the outer ring lifting module 20, or the outer ring lifting module 20 having adjustment holes corresponding to the first adjustment shaft 51. In specific implementation, the first adjustment shaft 51 is horizontally inserted through the upper end of the outer ring lifting module 20, and both ends are fixed by bearings or bushings to ensure smooth rotation of the shaft. The first eccentric wheel 52 is sleeved on the first adjustment shaft 51 and partially protrudes from the outer ring lifting module 20, and is fixed by a keyway or set screw to prevent axial movement. Using a tool (such as a wrench or screwdriver), the protruding end of the first adjustment shaft 51 is turned or inserted into the adjustment hole to turn the first adjustment shaft 51, causing the first eccentric wheel 52 to rotate around the shaft and abut against the top plate 10, thereby adjusting the gap between the outer ring lifting module 20 and the middle ring lifting module 30, that is, adjusting the absolute height of the outer ring lifting module 20.

[0038] In addition, two sets of first adjustment components 50 are located on both sides of the upper end of the outer ring lifting module 20 to ensure the balance of the lifting action. By simultaneously turning the two sets of first adjustment shafts 51, the top plate 10 can move smoothly. If fine adjustment is required, the first adjustment shaft 51 on one side can be adjusted individually to achieve a small adjustment of the tilt angle.

[0039] In other words, the eccentricity design of the first eccentric wheel 52 enables high-precision height adjustment of the outer ring lifting module 20. Each rotation angle allows for precise control of the movement height, avoiding the jamming or backlash that can occur in traditional threaded adjustments. Furthermore, the symmetrical layout of the two sets of first adjustment components 50 ensures the balance of the top plate 10 during adjustment, preventing tilting or wobbling caused by unilateral adjustment and improving the stability of the lifting action. Additionally, the eccentricity design of the first eccentric wheel 52 makes the height adjustment range of the outer ring lifting module 20 controllable, suitable for stacking processes of chips with different thicknesses. For example, for chips with thickness differences within ±0.5mm, height compensation can be achieved by adjusting the angle of the first eccentric wheel 52.

[0040] In one embodiment, the second adjustment component 60 includes a second adjustment shaft 61 and a second eccentric wheel 62. The second adjustment shaft 61 passes through the lower end of the outer ring lifting module 20, and the second eccentric wheel 62 is sleeved on the second adjustment shaft 61. Twisting the second adjustment shaft 61 causes the second eccentric wheel 62 to rotate and abut against the middle ring lifting module 30, thereby adjusting the height of the middle ring lifting module 30.

[0041] Specifically, there are two sets of second adjustment components 60, located on both sides of the lower end of the outer ring lifting module 20, with the second adjustment shaft 61 extending out of the side wall of the outer ring lifting module 20, or the outer ring lifting module 20 having adjustment holes corresponding to the second adjustment shaft 61. In specific implementation, the second adjustment shaft 61 is horizontally inserted through the lower end of the outer ring lifting module 20, and both ends are fixed by high-precision bearings or bushings to ensure smooth rotation of the shaft without axial movement. The second eccentric wheel 62 is sleeved on the second adjustment shaft 61 and partially protrudes from the outer ring lifting module 20, and is fixed by a keyway or set screw to prevent axial movement. Use a tool (such as a wrench or screwdriver) to turn the protruding end of the second adjusting shaft 61 or insert it into the adjusting hole to turn the second adjusting shaft 61, so that the second eccentric wheel 62 rotates around the shaft and abuts against the middle ring lifting module 30, thereby adjusting the gap between the outer ring lifting module 20 and the middle ring lifting module 30, that is, adjusting the height of the middle ring lifting module 30 relative to the outer ring lifting module 20.

[0042] In addition, two sets of second adjustment components 60 are located on both sides of the lower end of the outer ring lifting module 20 to ensure the balance of the lifting action. By simultaneously turning the two sets of second adjustment shafts 61, the smooth movement of the middle ring lifting module 30 is achieved. If fine adjustment is required, the second adjustment shaft 61 on one side can be adjusted individually to achieve a small adjustment of the tilt angle.

[0043] In other words, the eccentricity design of the second eccentric wheel 62 enables high-precision height adjustment of the center ring lifting module 30. Each rotation angle allows for precise control of the movement height, avoiding the jamming or backlash that can occur in traditional threaded adjustments. Furthermore, the symmetrical layout of the two sets of second adjustment components 60 ensures the balance of the center ring lifting module 30 during adjustment, preventing tilting or wobbling caused by unilateral adjustment and improving the stability of the lifting action. Additionally, the eccentricity design of the second eccentric wheel 62 makes the height adjustment range of the center ring lifting module 30 controllable, suitable for stacking processes of chips with different thicknesses. For example, for chips with thickness differences within ±1mm, height compensation can be achieved by adjusting the angle of the second eccentric wheel 62.

[0044] In one embodiment, the third adjustment component 70 includes a third adjustment shaft 71 and a third eccentric wheel 72. The third adjustment shaft 71 passes through the upper end of the inner ring lifting module 40, and the third eccentric wheel 72 is sleeved on the third adjustment shaft 71. Twisting the third adjustment shaft 71 causes the third eccentric wheel 72 to rotate and abut against the middle ring lifting module 30, thereby adjusting the height of the inner ring lifting module 40.

[0045] Specifically, there are two sets of third adjustment components 70, located on both sides of the upper end of the inner ring lifting module 40, and the second adjustment shaft 61 extends out of the side wall of the outer ring lifting module 20, or the outer ring lifting module 20 is provided with adjustment holes corresponding to the third adjustment shaft 71. In specific implementation, the third adjustment shaft 71 is horizontally inserted through the upper end of the inner ring lifting module 40, and both ends are fixed by high-precision bearings or bushings to ensure that the shaft rotates without axial movement. The third eccentric wheel 72 is sleeved on the third adjustment shaft 71 and partially protrudes from the inner ring lifting module 40, and is fixed by a keyway or set screw to prevent axial movement. Using a tool (such as a wrench or screwdriver), the protruding end of the third adjustment shaft 71 is turned or inserted into the adjustment hole to turn the third adjustment shaft 71, so that the third eccentric wheel 72 rotates around the shaft and abuts against the middle ring lifting module 30, thereby adjusting the gap between the middle ring lifting module 30 and the inner ring lifting module 40, that is, adjusting the absolute height of the inner ring lifting module 40.

[0046] In addition, two sets of third adjustment components 70 are located on both sides of the upper end of the inner ring lifting module 40 to ensure the balance of the lifting action. By simultaneously turning the two sets of third adjustment shafts 71, the smooth movement of the middle ring lifting module 30 is achieved. If fine adjustment is required, one side of the third adjustment shaft 71 can be adjusted individually to achieve a small adjustment of the tilt angle.

[0047] In other words, the eccentricity design of the third eccentric wheel 72 enables high-precision height adjustment of the inner ring lifting module 40. Each rotation angle allows for precise control of the movement height, avoiding the jamming or backlash that can occur in traditional threaded adjustments. Furthermore, the symmetrical layout of the two sets of third adjustment components 70 ensures the balance of the middle ring lifting module 30 during adjustment, preventing tilting or wobbling caused by unilateral adjustment and improving the stability of the lifting action. Additionally, the eccentricity design of the third eccentric wheel 72 makes the height adjustment range of the inner ring lifting module 40 controllable, suitable for stacking processes of chips with different thicknesses. For example, for chips with thickness differences within ±0.5mm, height compensation can be achieved by adjusting the angle of the third eccentric wheel 72.

[0048] In one embodiment, the outer periphery of the inner ring lifting module 40 is further provided with a support seat 80, and the third adjusting shaft 71 extends out of the side wall of the support seat 80.

[0049] Specifically, the support base 80 is a ring structure, with its inner diameter matching the outer diameter of the inner ring lifting module 40. The outer diameter is determined according to the overall design of the equipment. The height of the support base 80 is designed based on the installation position and adjustment requirements of the third adjusting shaft 71. The third adjusting shaft 71 is horizontally inserted through the side wall of the support base 80, and the protruding end of the third adjusting shaft 71 can be designed as hexagonal or square to facilitate adjustment using tools (such as an Allen wrench). If the third adjusting shaft 71 does not protrude from the side wall of the support base 80, an opening corresponding to the third adjusting shaft 71 is made in the side wall of the support base 80 to ensure that tools can be inserted into the hole to turn the third adjusting shaft 71.

[0050] In one embodiment, a first spring member 90 is sleeved on the lower end of the support base 80.

[0051] Specifically, based on the force characteristics and cushioning requirements of the support base 80, the first spring element 90 can be selected as a compression spring or a disc spring. Compression springs are suitable for general cushioning scenarios, while disc springs are suitable for scenarios with limited space or requiring high load capacity. The lower end of the support base 80 is designed to be cylindrical or stepped, facilitating the installation of the first spring element 90. If the lower end of the support base 80 is stepped, the spring can be fitted onto the smaller diameter section, while the larger diameter section is used to limit the spring's compression stroke. A guide rod or guide sleeve can also be installed at the lower end of the support base 80 to ensure that the first spring element 90 moves axially during compression, preventing skewing or jamming. When the support base 80 is subjected to external force (such as the downward pressure of a lifting module), the first spring element 90 is compressed, producing elastic deformation, absorbing and storing energy. After the external force disappears, the first spring element 90 releases the stored energy, pushing the support base 80 back to its original position, achieving cushioning and shock absorption effects.

[0052] In one embodiment, the bottom of the support base 80 abuts against the buffer platform 100.

[0053] Specifically, the shape of the buffer platform 100 matches the bottom of the support base 80, typically being circular or square, with a diameter or side length slightly larger than the bottom of the support base 80 to ensure complete coverage of the contact surface. When the support base 80 is subjected to external forces (such as downward pressure from a lifting module), the buffer platform 100 undergoes elastic deformation, absorbing and dispersing the impact force, reducing mechanical damage to the support base 80.

[0054] In one embodiment, the bottom of the buffer platform 100 is connected to a base 110, and a second spring member 120 is provided between the buffer platform 100 and the base 110.

[0055] Specifically, the lower end of the inner ring lifting module 40 passes through the support base 80, the buffer platform 100, and the base 110 from top to bottom, and is connected to the motor. When the motor drives the inner ring lifting module 40 to rise, the nested structure at the upper end of the inner ring lifting module 40 first pushes the middle ring lifting module 30 to rise, and the middle ring lifting module 30 then pushes the outer ring lifting module 20 to rise. The second spring 120 is sleeved on the guide structure between the buffer platform 100 and the base 110, so that the buffer platform 100 moves axially. By adjusting the spring compression or replacing the spring with one of different elastic coefficients, the preload of the buffer platform 100 can be adjusted to adapt to different process requirements.

[0056] In other words, the second spring 120 provides elastic cushioning between the buffer platform 100 and the base 110, effectively absorbing and dispersing the impact force generated during the upward movement of the inner ring lifting module 40, and reducing mechanical damage to the support 80 and the buffer platform 100.

[0057] In one embodiment, the upper surface of the outer ring lifting module 20 is further provided with a guide post 21, and the top plate 10 is provided with a guide hole 12 corresponding to the guide post 21.

[0058] Specifically, guide posts 21 are provided on the upper surface of the outer ring lifting module 20, typically 2-4 posts, evenly distributed along the edge or center of the outer ring lifting module 20 to ensure uniform force distribution on the top plate 10 during lifting or lowering. Guide holes 12 are provided on the top plate 10, corresponding one-to-one with the guide posts 21 of the outer ring lifting module 20, to ensure precise engagement between the top plate 10 and the guide posts 21 during lifting or lowering.

[0059] In other words, the cooperation between the guide post 21 and the guide hole 12 ensures that the top plate 10 moves axially during the rising or falling process, preventing deviation or jamming, and improving the accuracy and stability of the movement.

[0060] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A multi-step jacking structure with adjustable jacking height, characterized in that, include: The device comprises a top plate, an outer ring lifting module, a middle ring lifting module, and an inner ring lifting module. The outer ring lifting module is located above the middle ring lifting module, and the top of the middle ring lifting module extends into the outer ring lifting module. The middle ring lifting module is located above the inner ring lifting module, and the top of the inner ring lifting module extends into the middle ring lifting module. The top plate has an opening to allow the top of the outer ring lifting module to extend into the opening. Adjustment modules are provided between the top plate and the outer ring lifting module, between the outer ring lifting module and the middle ring lifting module, and between the middle ring lifting module and the inner ring lifting module to achieve height adjustment of the outer ring lifting module, the middle ring lifting module, and the inner ring lifting module.

2. The multi-step jacking structure with adjustable jacking height according to claim 1, characterized in that, The adjustment module is a first adjustment component, a second adjustment component, or a third adjustment component; the first adjustment component is connected to the upper end of the outer ring lifting module to adjust the height of the outer ring lifting module; the second adjustment component is connected to the lower end of the outer ring lifting module to adjust the height of the middle ring lifting module; and the third adjustment component is connected to the upper end of the inner ring lifting module to adjust the height of the inner ring lifting module.

3. The multi-step jacking structure with adjustable jacking height according to claim 2, characterized in that, The first adjustment component includes a first adjustment shaft and a first eccentric wheel. The first adjustment shaft passes through the upper end of the outer ring lifting module, and the first eccentric wheel is sleeved on the first adjustment shaft. Twisting the first adjustment shaft causes the first eccentric wheel to rotate and abut against the top plate to adjust the height of the outer ring lifting module.

4. The multi-step jacking structure with adjustable jacking height according to claim 2, characterized in that, The second adjustment component includes a second adjustment shaft and a second eccentric wheel. The second adjustment shaft passes through the lower end of the outer ring lifting module, and the second eccentric wheel is sleeved on the second adjustment shaft. Twisting the second adjustment shaft causes the second eccentric wheel to rotate and abut against the middle ring lifting module to adjust the height of the middle ring lifting module.

5. The multi-step jacking structure with adjustable jacking height according to claim 2, characterized in that, The third adjustment component includes a third adjustment shaft and a third eccentric wheel. The third adjustment shaft passes through the upper end of the inner ring lifting module, and the third eccentric wheel is sleeved on the third adjustment shaft. Twisting the third adjustment shaft causes the third eccentric wheel to rotate and abut against the middle ring lifting module to adjust the height of the inner ring lifting module.

6. The multi-step jacking structure with adjustable jacking height according to claim 5, characterized in that, The outer periphery of the inner ring lifting module is also provided with a support seat, and the third adjusting shaft extends out of the side wall of the support seat.

7. The multi-step jacking structure with adjustable jacking height according to claim 6, characterized in that, The lower end of the support base is fitted with a first spring element.

8. The multi-step jacking structure with adjustable jacking height according to claim 7, characterized in that, The bottom of the support base abuts against a buffer platform.

9. The multi-step jacking structure with adjustable jacking height according to claim 8, characterized in that, The bottom of the buffer platform is connected to a base, and a second spring is provided between the buffer platform and the base.

10. The multi-step jacking structure with adjustable jacking height according to claim 1, characterized in that, The upper surface of the outer ring lifting module is also provided with guide posts, and the top plate is provided with guide holes corresponding to the guide posts.

Images