A coreless crystal ring rotating device and a die bonding apparatus

Abstract

The utility model relates to the technical field of die bonder, specifically disclose a no iron core crystal ring rotating device and die bonder, including platform bottom plate, no iron core axial flux motor, no iron core axial flux motor includes annular stator on the platform bottom plate is installed, and located annular stator top and with annular stator rotation connection's annular rotor, crystal ring fixing mechanism, crystal ring fixing mechanism installs and fixes on annular rotor, is used for fixing crystal ring. The no iron core crystal ring rotating device and die bonder provided by the utility model can effectively solve the problem of low driving precision and response speed of the existing crystal ring rotating device.

Description

Technical Field

[0001] This utility model relates to the field of crystal bonding equipment technology, and in particular to a coreless crystal ring rotating device and crystal bonding equipment. Background Technology

[0002] One step in the die bonding process is to place the die ring (usually a ring-shaped iron plate with a blue film stretched tightly over it, on which several chips are arranged in a matrix) on a die ring rotating device. Then, a push-pin mechanism is used to lift the chips one by one so that the die bonding arm can pick them up. After the push-pin mechanism has lifted all the chips in one area, the die ring rotating device needs to rotate the die ring at a certain angle so that the push-pin mechanism can lift the chips in the next area.

[0003] Existing crystal ring rotation devices typically use a motor belt as the rotation drive mechanism to rotate the crystal ring in an indexing manner. This method has significant drawbacks: the inherent elastic deformation of the belt and the mechanical backlash in the transmission link result in low positioning accuracy, making it difficult to meet the precise alignment requirements of micron-level chips; the system lacks rigidity, making it prone to vibration and overshoot during start-up and shutdown, resulting in slow dynamic response and severely restricting the improvement of equipment cycle time; at the same time, the belt is a wear part, and problems such as aging and elongation, requiring regular tensioning and maintenance, affect long-term operational stability and reliability.

[0004] To overcome the aforementioned shortcomings, the industry has considered using axial flux motors to replace traditional solutions. However, traditional axial flux motors typically have an iron core structure. Although this solves the backlash problem, the rotor's large inertia due to the iron core is detrimental to rapid response during high-speed start-stop and frequent acceleration and deceleration.

[0005] Therefore, it is necessary to improve the existing crystal ring rotation device to solve the problems of low driving accuracy and response speed.

[0006] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a coreless crystal ring rotating device and a crystal bonding device, which can effectively solve the problems of low driving accuracy and response speed of existing crystal ring rotating devices.

[0008] To achieve the above objectives, this utility model provides a coreless crystal ring rotating device, comprising:

[0009] Platform base plate;

[0010] A coreless axial flux motor, comprising an annular stator mounted on the platform base plate, and an annular rotor located above the annular stator and rotatably connected to the annular stator;

[0011] A crystal ring fixing mechanism is installed and fixed on the annular rotor to fix the crystal ring.

[0012] Optionally, the coreless axial flux motor further includes:

[0013] A rotary bearing, wherein the outer ring of the rotary bearing is synchronously rotatably connected to the annular stator, and the inner ring of the rotary bearing is synchronously rotatably connected to the annular rotor.

[0014] Optionally, the annular rotor, the annular stator, and the rotary bearing are coaxial and arranged from top to bottom;

[0015] in,

[0016] The annular rotor is provided with a locking part that protrudes inward relative to the inner wall of the annular rotor;

[0017] The outer ring of the rotary bearing is located directly below the annular stator and is fixedly connected to the annular stator;

[0018] The inner ring of the rotary bearing extends directly below the locking part and is fastened to the locking part by fasteners.

[0019] Optional,

[0020] The annular stator is equipped with several coreless coils evenly arranged around its axis.

[0021] The annular rotor has several magnets arranged uniformly around its axis inside, and the magnetic poles of two adjacent magnets are opposite.

[0022] Optionally, the crystal ring fixing mechanism includes:

[0023] An annular base plate, which is fixed on the annular rotor;

[0024] A support cylinder is located inside the annular base plate. The lower end of the support cylinder is fixed relative to the annular base plate, and the upper end of the support cylinder protrudes upward to a height above the annular base plate to support the inner edge of the bottom surface of the crystal ring.

[0025] The crescent plate assembly is located above the annular base plate and is provided with an arc-shaped groove corresponding to the outer edge of the crystal ring, and a crystal ring inlet and outlet for the crystal ring to enter and exit the arc-shaped groove laterally;

[0026] A lifting direct drive assembly is mounted on the annular base plate, and the drive end of the lifting direct drive assembly is connected to the crescent plate assembly to drive the crescent plate assembly to move up and down relative to the supporting cylinder.

[0027] Optionally, the crescent plate assembly includes a lower crescent plate for supporting the crystal ring upwards, and an upper crescent plate located above the lower crescent plate for pressing the crystal ring downwards.

[0028] Optionally, the lift direct drive assembly includes:

[0029] At least two vertical guide rods, the lower end of which is fixed to the annular base plate and the upper end of which is slidably connected to the lower crescent plate.

[0030] A plurality of vertical lead screws, the lower end of each vertical lead screw being rotatably connected to the annular base plate and the upper end being threadedly connected to the lower crescent plate;

[0031] A plurality of pulleys are provided in one-to-one correspondence with each of the vertical lead screws, and each pulley is sleeved on one of the vertical lead screws and rotates synchronously with the corresponding vertical lead screw;

[0032] A timing belt, which is connected to each of the pulleys for transmission;

[0033] A rotary drive assembly is used to drive each of the vertical lead screws to rotate synchronously via the synchronous belt, so as to raise or lower the crescent plate assembly.

[0034] Optionally, the rotary drive assembly includes:

[0035] A longitudinal bevel gear, which is fixed to one of the vertical lead screws;

[0036] A horizontal bevel gear, which is located on the side of the vertical bevel gear;

[0037] A bevel gear rotary drive mechanism, wherein the drive end of the rotary drive mechanism is connected to the transverse bevel gear transmission;

[0038] The bevel gear direct drive mechanism includes a horizontal bevel gear and a bevel gear rotary drive mechanism, both of which are mounted on the drive end of the bevel gear direct drive mechanism and are driven by the bevel gear direct drive mechanism to move closer to or away from the vertical bevel gear.

[0039] Optionally, it may also include an XY bidirectional platform located below the platform base plate and driving the platform base plate to move in the horizontal direction.

[0040] On the other hand, a die bonding device is provided, including any of the aforementioned coreless crystal ring rotating devices and a pin mechanism mounted on the platform base plate of the coreless crystal ring rotating device.

[0041] The beneficial effects of this utility model are as follows: It provides a coreless crystal ring rotating device and a crystal bonding equipment, which have the following advantages:

[0042] ① It completely abandons the traditional belt drive, eliminates elastic deformation and mechanical backlash, and achieves micron-level precise positioning of the crystal ring, meeting the high-precision alignment requirements of the chip.

[0043] ② The "coreless" rotor design greatly reduces the inertia of moving parts, enabling extremely fast start-stop and acceleration / deceleration, significantly improving dynamic response speed and directly increasing the equipment's production cycle time.

[0044] ③ The direct drive mode significantly improves system rigidity. The motor torque acts directly and without delay on the load, effectively suppressing vibration and overshoot during operation and ensuring smooth operation.

[0045] Therefore, the coreless crystal ring rotating device and crystal bonding equipment provided by this utility model can effectively solve the problems of low driving accuracy and response speed of existing crystal ring rotating devices. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0047] Figure 1 A schematic diagram of the die bonding device provided in the embodiment;

[0048] Figure 2 Exploded view of a coreless axial flux motor provided for an embodiment;

[0049] Figure 3 A cross-sectional view of a coreless axial flux motor provided for an embodiment;

[0050] Figure 4 This is a schematic diagram of the crystal ring fixing mechanism provided in the embodiment.

[0051] In the picture:

[0052] 100. Coreless crystal ring rotating device; 200. Ejector pin mechanism;

[0053] 1. Platform base plate;

[0054] 2. Coreless axial flux motor; 201, toroidal stator; 2011, coreless coil; 202, toroidal rotor; 2021, magnet; 2022, locking part; 203, rotary bearing; 2031, outer ring; 2032, inner ring;

[0055] 3. Crystal ring fixing mechanism; 301. Annular base plate; 302. Supporting cylinder; 303. Crescent plate assembly; 3031. Arc groove; 3032. Crystal ring inlet and outlet; 304. Lifting direct drive assembly; 3041. Vertical lead screw; 3042. Pulley; 3043. Synchronous belt; 3044. Vertical shaft bevel gear; 3045. Horizontal shaft bevel gear; 3046. Bevel gear rotary drive mechanism; 3047. Bevel gear direct drive mechanism;

[0056] 4. XY bidirectional platform. Detailed Implementation

[0057] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0058] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0059] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0060] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0061] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0062] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0063] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0064] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0065] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0066] This invention provides a coreless crystal ring rotating device and a crystal bonding device, which can effectively solve the problems of low driving accuracy and response speed of existing crystal ring rotating devices.

[0067] See Figure 1 The die bonding equipment provided in this embodiment includes a coreless die ring rotating device 100 for fixing the die ring and a pin mechanism 200 for lifting the chip on the die ring.

[0068] The ejector mechanism 200 is existing technology and is not the focus of this embodiment, so it will not be described in detail. The following mainly describes the specific structure of the coreless crystal ring rotating device 100.

[0069] The coreless crystal ring rotating device 100 includes:

[0070] Platform base plate 1, pin mechanism 200 is installed on platform base plate 1;

[0071] The coreless axial flux motor 2 includes an annular stator 201 mounted on the platform base plate 1 and an annular rotor 202 located above the annular stator 201 and rotatably connected to the annular stator 201.

[0072] Crystal ring fixing mechanism 3 is installed and fixed on the annular rotor 202 to fix the crystal ring.

[0073] The coreless crystal ring rotating device 100 provided in this embodiment requires the crystal ring to be placed on the crystal ring fixing mechanism 3 by an external robotic arm or other equipment before rotating the crystal ring. When the crystal ring needs to be rotated, the annular stator 201 and annular rotor 202 of the coreless axial flux motor 2 work together to drive the crystal ring fixing mechanism 3 to rotate with the annular rotor 202, thereby realizing the rotation and repositioning of the crystal ring. After the repositioning is completed, the ejector mechanism 200 is raised upward to eject the chip.

[0074] The coreless crystal ring rotating device 100 provided in this embodiment has the following advantages:

[0075] ① It completely abandons the traditional belt drive, eliminates elastic deformation and mechanical backlash, and achieves micron-level precise positioning of the crystal ring, meeting the high-precision alignment requirements of the chip.

[0076] ② The "coreless" rotor design greatly reduces the inertia of moving parts, enabling extremely fast start-stop and acceleration / deceleration, significantly improving dynamic response speed and directly increasing the equipment's production cycle time.

[0077] ③ The direct drive mode significantly improves system rigidity. The motor torque acts directly and without delay on the load, effectively suppressing vibration and overshoot during operation and ensuring smooth operation.

[0078] Therefore, the coreless crystal ring rotating device 100 and the crystal bonding equipment provided by this utility model can effectively solve the problems of low driving accuracy and response speed of existing crystal ring rotating devices.

[0079] In this embodiment, see Figure 2 The annular stator 201 has a plurality of coreless coils 2011 arranged evenly around the axis of the annular stator 201 inside;

[0080] The annular rotor 202 has a plurality of magnets 2021 arranged uniformly around the axis of the annular rotor 202 inside, and the magnetic poles of two adjacent magnets 2021 are opposite.

[0081] It should be noted that the main difference between the coreless axial flux motor 2 provided in this embodiment and the conventional axial flux motor is that no iron core is set inside the coil. Specifically, how to make the annular rotor 202 rotate and stop through electromagnetic control is existing technology, and this embodiment will not elaborate on this.

[0082] It is worth noting that, in order to enable the coreless axial flux motor 2 to be successfully integrated into the coreless crystal ring rotating device 100, this embodiment has improved the rotation structure between the annular rotor 202 and the annular stator 201.

[0083] See Figure 3 Specifically, the coreless axial flux motor 2 further includes a rotary bearing 203, the outer ring 2031 of which is synchronously rotatably connected to the annular stator 201, and the inner ring 2032 of which is synchronously rotatably connected to the annular rotor 202.

[0084] Furthermore, the annular rotor 202, the annular stator 201, and the rotary bearing 203 are coaxial and arranged from top to bottom;

[0085] in,

[0086] The annular rotor 202 is provided with a locking part 2022 that protrudes inward relative to the inner wall of the annular rotor 202;

[0087] The outer ring 2031 of the rotary bearing 203 is located directly below the annular stator 201 and is fixedly connected to the annular stator 201;

[0088] The inner ring 2032 of the rotary bearing 203 extends directly below the locking part 2022 and is fastened to the locking part 2022 by fasteners.

[0089] In this embodiment, the locking part 2022 is designed to protrude inward so as to lock the annular rotor 202 to the inner ring 2032, thereby avoiding interference between the annular stator 201 and the fastener.

[0090] See Figure 4 In this embodiment, the crystal ring fixing mechanism 3 includes:

[0091] An annular base plate 301 is fixed on the annular rotor 202;

[0092] A support cylinder 302 is located inside the annular base plate 301. The lower end of the support cylinder 302 is fixedly disposed relative to the annular base plate 301, and the upper end of the support cylinder 302 protrudes upward to be higher than the annular base plate 301 to support the inner edge of the bottom surface of the crystal ring.

[0093] The crescent plate assembly 303 is located above the annular base plate 301 and is provided with an arc-shaped groove 3031 corresponding to the outer edge of the crystal ring, and a crystal ring inlet and outlet 3032 for the crystal ring to enter and exit the arc-shaped groove 3031 laterally.

[0094] A lifting direct drive assembly 304 is mounted on the annular base plate 301, and the drive end of the lifting direct drive assembly 304 is connected to the crescent plate assembly 303 to drive the crescent plate assembly 303 to move up and down relative to the support cylinder 302.

[0095] The process for performing die bonding is as follows:

[0096] (1) The lifting direct drive assembly 304 first lifts the crescent plate assembly 303 to a higher position (the bottom surface of the arc groove 3031 is higher than the top surface of the support cylinder 302, so as to avoid the top of the support cylinder 302 affecting the subsequent entry of the crystal ring into the arc groove 3031).

[0097] (2) Then, the robotic arm and other equipment will laterally feed the crystal ring into the arc groove 3031 through the crystal ring inlet and outlet 3032. At this time, the inner edge of the bottom surface of the crystal ring is located directly above the support cylinder 302, and the outer edge of the bottom surface of the crystal ring is inserted into the arc groove 3031. Under the support of the bottom surface of the arc groove 3031, it will not fall downward.

[0098] (3) The lifting direct drive assembly 304 drives the crescent plate assembly 303 to move downward;

[0099] Initially, the crystal ring moves downward synchronously with the crescent plate assembly 303;

[0100] Subsequently, the top surface of the support cylinder 302 abuts against the inner edge of the bottom surface of the crystal ring, and the crystal ring no longer moves downward due to the support of the support cylinder 302.

[0101] The crescent plate assembly 303 continues to move downward until the top surface of the arc groove 3031 presses down against the top surface of the crystal ring;

[0102] At this time, the crescent plate assembly 303 and the support cylinder 302 cooperate with each other to clamp the crystal ring from the top and bottom directions;

[0103] (4) The annular rotor 202 rotates, thereby driving the entire crystal ring fixing mechanism 3 to rotate, thus realizing the rotation and repositioning of the crystal ring.

[0104] Furthermore, the crescent plate assembly 303 includes a lower crescent plate for supporting the crystal ring upwards, and an upper crescent plate located above the lower crescent plate for pressing the crystal ring downwards.

[0105] The lift direct drive assembly 304 includes:

[0106] At least two vertical guide rods, the lower end of which is fixed to the annular base plate 301 and the upper end is slidably connected to the lower crescent plate.

[0107] A plurality of vertical lead screws 3041, the lower end of each vertical lead screw 3041 being rotatably connected to the annular base plate 301 and the upper end being threadedly connected to the lower crescent plate;

[0108] A plurality of pulleys 3042 are provided in one-to-one correspondence with each of the vertical lead screws 3041. Each pulley 3042 is sleeved on one of the vertical lead screws 3041 and rotates synchronously with the corresponding vertical lead screw 3041.

[0109] Synchronous belt 3043, which is connected to each of the pulleys 3042 in a transmission manner;

[0110] A rotary drive assembly is used to drive each of the vertical lead screws 3041 to rotate synchronously via the synchronous belt 3043, so as to raise or lower the crescent plate assembly 303.

[0111] Optionally, the rotary drive assembly includes:

[0112] A longitudinal bevel gear 3044 is fixedly mounted on one of the vertical lead screws 3041;

[0113] A horizontal bevel gear 3045 is located on the side of the vertical bevel gear 3044.

[0114] A bevel gear rotary drive mechanism 3046, wherein the drive end of the rotary drive mechanism is connected to the transverse bevel gear 3045 in a transmission connection;

[0115] The bevel gear direct drive mechanism 3047, the horizontal bevel gear 3045 and the bevel gear rotary drive mechanism 3046 are both installed on the drive end of the bevel gear direct drive mechanism 3047 and are driven by the bevel gear direct drive mechanism 3047 to approach or move away from the vertical bevel gear 3044.

[0116] When it is necessary to drive the crescent plate assembly 303 to move up and down, the bevel gear direct drive mechanism 3047 extends and drives the horizontal axis bevel gear 3045 to move toward the vertical axis bevel gear 3044 until the horizontal axis bevel gear 3045 meshes with the vertical axis bevel gear 3044. The drive end of the bevel gear rotary drive mechanism 3046 rotates, which causes each vertical lead screw 3041 to rotate, thereby driving the crescent plate assembly 303 to move up and down smoothly.

[0117] In this embodiment, the coreless crystal ring rotating device 100 further includes an XY bidirectional platform 4 located below the platform base plate 1 and driving the platform base plate 1 to move in the horizontal direction, so as to control the XY displacement of the platform base plate 1.

[0118] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A coreless ring of crystal rotating device, characterized by, include: Platform base plate (1); The coreless axial flux motor (2) includes an annular stator (201) mounted on the platform base plate (1) and an annular rotor (202) located above the annular stator (201) and rotatably connected to the annular stator (201). Crystal ring fixing mechanism (3) is installed and fixed on the annular rotor (202) for fixing the crystal ring.

2. The coreless ring of crystal rotation device according to claim 1, characterized in that, The coreless axial flux motor (2) also includes: A rotary bearing (203) is provided, wherein the outer ring (2031) of the rotary bearing (203) is synchronously connected to the annular stator (201), and the inner ring (2032) of the rotary bearing (203) is synchronously connected to the annular rotor (202).

3. The coreless ring of crystal rotation device according to claim 2, characterized in that, The annular rotor (202), the annular stator (201), and the rotary bearing (203) are coaxial and arranged from top to bottom; in, The annular rotor (202) is provided with a locking part (2022) that protrudes inward relative to the inner wall of the annular rotor (202). The outer ring (2031) of the rotary bearing (203) is located directly below the annular stator (201) and is fixedly connected to the annular stator (201); The inner ring (2032) of the rotary bearing (203) extends directly below the locking part (2022) and is fastened to the locking part (2022) by fasteners.

4. The coreless crystal ring rotating device according to claim 2, characterized in that, The annular stator (201) has a plurality of coreless coils (2011) arranged evenly around the axis of the annular stator (201). The annular rotor (202) has a plurality of magnets (2021) arranged uniformly around the axis of the annular rotor (202), and the magnetic poles of two adjacent magnets (2021) are opposite.

5. The coreless ring of claim 1, wherein The crystal ring fixing mechanism (3) includes: An annular base plate (301) is fixed on the annular rotor (202); A support cylinder (302) is located inside the annular base plate (301). The lower end of the support cylinder (302) is fixed relative to the annular base plate (301), and the upper end of the support cylinder (302) protrudes upward to be higher than the annular base plate (301) to support the inner edge of the bottom surface of the crystal ring. The crescent plate assembly (303) is located above the annular base plate (301) and is provided with an arc groove (3031) corresponding to the outer edge of the crystal ring, and a crystal ring inlet and outlet (3032) for the crystal ring to enter and exit the arc groove (3031) laterally. The lifting direct drive assembly (304) is mounted on the annular base plate (301), and the driving end of the lifting direct drive assembly (304) is connected to the crescent plate assembly (303) to drive the crescent plate assembly (303) to move up and down relative to the support cylinder (302).

6. The coreless ring rotor device of claim 5, wherein, The crescent plate assembly (303) includes a lower crescent plate for supporting the crystal ring upwards, and an upper crescent plate located above the lower crescent plate for pressing the crystal ring downwards.

7. The coreless ring rotor device of claim 6, wherein The lift direct drive assembly (304) includes: At least two vertical guide rods, the lower end of which is fixed to the annular base plate (301) and the upper end is slidably connected to the lower crescent plate; A plurality of vertical lead screws (3041), the lower end of each vertical lead screw (3041) being rotatably connected to the annular base plate (301) and the upper end being threadedly connected to the lower crescent plate; A plurality of pulleys (3042) are provided in a one-to-one correspondence with each of the vertical lead screws (3041). Each pulley (3042) is sleeved on one of the vertical lead screws (3041) and rotates synchronously with the corresponding vertical lead screw (3041). A synchronous belt (3043) is connected to each of the pulleys (3042) for transmission. A rotary drive assembly is used to drive each of the vertical lead screws (3041) to rotate synchronously via the synchronous belt (3043) to raise or lower the crescent plate assembly (303).

8. The coreless ring rotor device of claim 7, wherein, The rotary drive assembly includes: A longitudinal bevel gear (3044) is fixed on one of the vertical lead screws (3041); A horizontal bevel gear (3045) is located on the side of the vertical bevel gear (3044). A bevel gear rotary drive mechanism (3046) is provided, wherein the drive end of the rotary drive mechanism is connected to the transverse bevel gear (3045) for transmission. The bevel gear direct drive mechanism (3047) includes the horizontal bevel gear (3045) and the bevel gear rotary drive mechanism (3046), both of which are mounted on the drive end of the bevel gear direct drive mechanism (3047) and are driven by the bevel gear direct drive mechanism (3047) to approach or move away from the vertical bevel gear (3044).

9. The coreless ring rotor device of claim 8, wherein, It also includes an XY bidirectional platform (4) located below the platform base plate (1) and driving the platform base plate (1) to move in the horizontal direction.

10. A die bonding apparatus, characterized in that, It includes the coreless crystal ring rotating device (100) according to any one of claims 1-9, and the ejector mechanism (200) mounted on the platform base plate (1) of the coreless crystal ring rotating device (100).

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