Roller shaft end fixing assembly, drive shaft device, roller shaft device and silicon rod slicing machine

Abstract

The application provides a roller shaft end fixing assembly, a driving shaft device, a roller shaft device and a silicon rod slicing machine, and relates to the technical field of silicon rod slicing equipment. The roller shaft end fixing assembly comprises a first connecting piece, a second connecting piece and a force applying structure; the first connecting piece and the second connecting piece are arranged inside a hollow support piece, and the force applying structure is mounted on the support piece; the second end of the first connecting piece is clamped with the first end of the second connecting piece, and the second end of the second connecting piece is connected with the force applying structure; the first end of the first connecting piece is used for fixed connection with the roller shaft, and the force applying structure is used for applying pulling force or pushing force to the second connecting piece to lock or unlock the clamping between the first connecting piece and the second connecting piece. The roller shaft end fixing assembly applies pulling force to the second connecting piece through the force applying structure to lock the clamping between the first connecting piece and the second connecting piece, thereby tensioning the roller shaft, effectively improving the connecting force between the roller shaft and the support piece, and ensuring the coaxiality of the roller shaft and the support piece through the taper cooperation between the support piece and the roller shaft.

Description

Technical Field

[0001] This application relates to the field of silicon rod slicing equipment technology, and in particular to a roller end fixing assembly, a drive shaft device, a roller device, and a silicon rod slicing machine. Background Technology

[0002] A slicing machine is used to slice silicon rods into silicon wafers. A slicing machine typically includes a pair of parallel rollers and multiple cutting lines wound around the two rollers. When it is necessary to cut a silicon rod, the rollers are driven to rotate, thereby moving the cutting lines left and right. At the same time, the silicon rod is pressed down to the cutting lines, and the cutting lines can be used to cut the silicon rod into multiple silicon wafers.

[0003] To adapt to the ever-improving silicon wafer slicing process, the dicing lines in slicing machines are becoming increasingly finer. To accommodate these finer lines and prevent breakage due to vibration, existing slicing machines typically reduce the diameter of the rollers and the distance between them, thereby decreasing the width of the dicing line across the rollers. However, reducing the roller diameter and the distance between the rollers can lead to the dicing line easily cutting into the rollers and reducing the dicing line's oscillation speed. To address this issue, patent CN107097362B discloses a wafer slicing machine that adds a pair of parallel auxiliary rollers between two main rollers, ensuring that the highest point of the auxiliary rollers is not lower than the highest point of the main rollers. This allows the auxiliary rollers to support the dicing line, thus reducing the width of the dicing line.

[0004] Furthermore, patent CN107097362B discloses that the end of the auxiliary roller is mounted on a bracket via a bearing, specifically, the shaft end of the auxiliary roller is sleeved inside the bearing. However, the direct sleeve mounting method between the auxiliary roller and the bearing can easily lead to insufficient installation precision, making it difficult to ensure coaxiality. When the auxiliary roller is in a state of ultra-high-speed rotation, significant centrifugal inertial force will be generated due to mass eccentricity. This centrifugal force increases nonlinearly with the square of the rotational speed, which will not only cause severe forced vibration of the shaft system of the auxiliary roller, causing the amplitude to increase sharply, but also form a periodic alternating load on the support structure (such as bearing and bearing housing) at the end of the auxiliary roller. This will cause the support structure to fail prematurely due to fatigue accumulation, resulting in situations such as bearing raceway peeling, loose bearing housing bolts, or even breakage. In severe cases, it may cause imbalance and instability of the auxiliary roller shaft system, causing the entire machine to malfunction. Summary of the Invention

[0005] The purpose of this application is to provide a roller end fixing component, a drive shaft device, a roller device, and a silicon rod slicing machine to alleviate the technical problem in the prior art where the shaft end of the auxiliary roller in the slicing machine is sleeved inside the bearing. This installation method easily leads to insufficient installation accuracy, making it difficult to ensure coaxiality. When the auxiliary roller is in a state of ultra-high speed rotation, significant centrifugal inertial force will be generated due to mass eccentricity. This will not only cause severe forced vibration of the shaft system of the auxiliary roller, but also cause premature failure of the support structure at the end of the auxiliary roller due to fatigue accumulation. In severe cases, it may cause the shaft system of the auxiliary roller to become unbalanced and unstable, resulting in the failure of the entire machine.

[0006] In a first aspect, this application provides a roller end fixing assembly for fixing the end of a roller on a silicon rod slicing machine to a support member, wherein the diameter of the roller is 70-120 mm. The roller end fixing assembly includes a housing, a support, a first connector, a second connector, and a force-applying structure; The support component is rotatably mounted inside the housing via a bearing. The end of the support component that mates with the roller shaft is the first end of the support component, and the first end of the support component is tapered to the roller shaft. Both the first and second connectors are disposed inside the hollow support member, and the force-applying structure is mounted on the support member. Both the first and second connectors include a first end and a second end. The second end of the first connector is engaged with the first end of the second connector, and the second end of the second connector is connected to the force-applying structure. The first end of the first connector is used to be fixedly connected to one end of the roller shaft, and the force-applying structure is used to apply tension or thrust to the second connector along the central axis of the support member so that the first and second connectors are engaged, locked, or unlocked.

[0007] When using the roller end fixing assembly provided in this application to connect and fix the roller and the support, firstly, the first end of the first connector is fixedly connected to the end of the roller and the second end of the first connector is snapped into place with the first end of the second connector. Then, the force-applying structure applies a pulling force to the second connector along the central axis of the support in a direction away from the first connector. At this time, the axial pulling force applied by the force-applying structure can lock the first connector and the second connector together, thereby increasing the connection force between the first connector and the second connector. Since the first end of the first connector is fixedly connected to the end of the roller, the second end of the second connector is connected to the force-applying structure, and the force-applying structure is installed on the support, the connection force between the roller and the support can also be increased. The tapered fit between the support and the roller effectively ensures the coaxiality between the roller and the support, preventing the support from failing due to fatigue accumulation or causing imbalance and instability in the roller's shaft system during rotation.

[0008] In an optional embodiment, the force-applying structure includes a tie rod and an elastic element. The tie rod is disposed inside the support and coaxially with the support. The tie rod includes a first end and a second end. The first end of the tie rod is fixedly connected to the second end of the second connector. The elastic element is connected between the inner wall of the support and the tie rod. The elastic element is used to pull the tie rod along the central axis of the support in a direction away from the roller shaft under its own elastic force.

[0009] The tie rod is used to transmit tensile or thrust force to the second connector. The tie rod can also be coaxially arranged with the support to further ensure coaxiality between the roller and the support. Inside the support, the elastic element is initially compressed. Under the elastic recovery of the elastic element, it pulls the tie rod away from the roller along the central axis of the support, thus applying tensile force to the second connector. Therefore, when the force-applying structure includes a tie rod and an elastic element, the elastic recovery of the elastic element can be used to achieve a locking and engaging action between the first and second connectors. Compared to using an electric or pneumatic telescopic structure to apply thrust, this method requires no energy and effectively simplifies the structure.

[0010] In an optional embodiment, the elastic element includes multiple disc spring assemblies, each disc spring assembly including multiple disc springs connected in parallel, and the multiple disc spring assemblies are connected in series.

[0011] Disc springs, also known as disc springs, are conical discs with a central through-hole. To connect the pull rod to the elastic element, the disc spring can be fitted over the pull rod through this through-hole. Parallel connection of multiple disc springs refers to multiple disc springs distributed sequentially along their axial direction, all protruding in the same direction. In this case, the parallel disc springs are stacked in the same direction. After multiple disc springs are connected in parallel to form a disc spring group, these groups are then distributed sequentially along their axial direction, with adjacent disc springs on the sides protruding in opposite directions. In this case, the disc spring groups are arranged alternately in opposite directions, meaning they are connected in series. When a disc spring assembly includes multiple disc springs connected in series and multiple disc spring assemblies are connected in parallel, the elastic element not only has the characteristic of parallel disc springs increasing elastic force but also has the characteristic of series disc springs increasing elastic compression distance. Therefore, when the elastic element in this application is formed by multiple disc spring assemblies, the elastic element can not only increase the elastic force but also increase the compression distance, thereby providing sufficient tension for the second connector in the limited space around the pull rod to meet the locking requirements between the first connector and the second connector.

[0012] In an optional embodiment, the force-applying structure further includes a drive member disposed on one side of the second end of the pull rod, the output end of the drive member being used to push the pull rod along the central axis of the support member toward a direction close to the roller shaft.

[0013] When it is necessary to separate the roller shaft and the support component, the drive unit can be activated, causing its output end to abut against the second end of the pull rod and push the pull rod along the central axis of the support component towards the roller shaft. The pull rod then pushes the second connecting component closer to the first connecting component until the locking state between the two components is unlocked. During the process of the drive unit pushing the pull rod, it also further compresses the elastic element via the pull rod. When the roller shaft and support component are reconnected, as the output end of the drive unit returns to its original position, the elastic element can re-pull the pull rod under its elastic recovery action, causing the second connecting component to re-lock with the first connecting component. Therefore, the drive unit only needs to be activated during the separation of the roller shaft and support component, making operation convenient.

[0014] In an optional embodiment, the roller end fixing assembly further includes a third connector, which is disposed between the second connector and the force-applying structure, and is engaged with the second connector and connected to the force-applying structure.

[0015] When the gap between the second connector and the force-applying structure is large, a third connector can be used to connect the second connector and the force-applying structure. It can be seen that the third connector serves as a transitional connection. The snap-fit ​​between the third connector and the second connector facilitates the installation and removal of both. It should be noted that when the third connector is positioned between the second connector and the force-applying structure, the tensile force applied by the force-applying structure is transmitted to the second connector through the third connector. During this process, the snap-fit ​​joint between the second and third connectors also locks in place, thereby improving the connection stability between them. Since separating the roller shaft from the support only requires separating the first and second connectors, when the force-applying structure applies thrust, the thrust is only transmitted to the second connector through the third connector. Therefore, the snap-fit ​​joint between the third and second connectors does not need to be unlocked by the thrust of the force-applying structure.

[0016] In an optional embodiment, one of the first connector and the second connector is provided with an annular groove extending circumferentially therein, and the other is provided with a snap-fit ​​protrusion that snaps into the annular groove.

[0017] The interlocking mechanism of the annular groove and the snap-fit ​​protrusion not only enables the snap-fit ​​between the first and second connectors, but also makes the tension distribution of the second connector on the first connector more balanced when the force-applying structure applies tension, further improving the coaxiality between the roller and the support.

[0018] In an optional embodiment, the first connector is a pull stud, and the second connector is a pull claw; The pull stud is provided with an annular groove, and the pull claw includes multiple claw flaps that can open or close. Each claw flap is provided with a snap-fit ​​protrusion. The multiple claw flaps are used to close under the tensile force applied by the force-applying structure to clamp the pull stud, and the snap-fit ​​protrusion is used to snap into the annular groove when the multiple claw flaps are closed.

[0019] Compared to structures with fixed shapes, such as sleeves, pull claws can engage with the annular groove on the pull stud under the pulling force applied by the force-applying structure, closing multiple claw segments to hold the pull stud tightly and effectively improve the connection strength between the first and second connecting parts. Conversely, when the force-applying structure applies a pushing force, the multiple claw segments of the pull claw can open, releasing the pull stud and creating a gap between the locking protrusion and the annular groove. At this point, pulling the roller away from the second connecting part allows the first connecting part to be pulled out from inside the support, achieving separation of the first and second connecting parts. Thus, by using a pull stud as the first connecting part and a pull claw as the second connecting part, the connection strength between the first and second connecting parts can be further improved, while also effectively enhancing the ease of separation between them.

[0020] In an optional embodiment, the first end of the support extends outside the housing and can be inserted into the end slot of the roller shaft. Both the outer peripheral wall of the first end of the support and the inner peripheral wall of the slot are conical, so that there is a tapered fit between the support and the roller shaft; or... The first end of the support is located inside the outer shell. The first end of the support is provided with a mating groove. The end of the roller can extend into the mating groove. The inner peripheral wall of the mating groove and the outer peripheral wall of the roller are both conical to make the support and the roller fit together tapered.

[0021] The roller and the support are connected by a tapered fit. When the first connector, the second connector and the force-applying structure lock the roller, the tapered fit positions the support and the roller coaxially, improving their coaxiality.

[0022] Secondly, this application provides a drive shaft device, which includes a drive shaft assembly and a roller end fixing assembly according to any of the foregoing embodiments; The drive shaft assembly includes a main shaft, a mover, and a stator. The main shaft is rotatably mounted in the housing via bearings. The mover is sleeved on the outer circumference of the main shaft and fixedly connected to the main shaft. The stator is sleeved on the outer circumference of the mover and coaxially arranged with the mover. There is a gap between the stator and the mover. The main shaft serves as a support component, and both the first and second connecting components in the roller end fixing assembly are located inside the main shaft.

[0023] When the roller is used as the drive shaft in a silicon rod slicing machine, the end of the roller needs to be connected to the output shaft of the rotary drive device. In this case, the drive shaft assembly is the rotary drive device, and the main shaft in the drive shaft assembly is the output shaft. The stator and mover work together to realize the rotation of the main shaft within the housing, and the bearing between the main shaft and the housing supports the main shaft, allowing it to rotate within the housing.

[0024] It should be noted that, since the drive shaft device provided in this application includes the aforementioned roller end fixing assembly, the drive shaft device can also use the force-applying structure to apply a pulling force to the second connector along the central axis of the support member in a direction away from the first connector member, thereby locking the first connector member and the second connector member together, thereby increasing the connection force between the roller shaft and the support member, ensuring the coaxiality between the roller shaft and the support member, and preventing the support member from failing due to fatigue accumulation or causing the roller shaft system to become unbalanced and unstable during rotation.

[0025] In an optional embodiment, the drive shaft assembly further includes an annular end cap, which is sleeved on the outside of the spindle and fixed to the end of the housing. An annular chamber and an annular flow channel are formed between the inner peripheral wall of the end cap and the outer peripheral wall of the main shaft, and the chamber is located on the side of the annular flow channel away from the outer shell. The main shaft has multiple blocking protrusions arranged sequentially along its axial direction on its outer peripheral wall within the cavity. The first side of each blocking protrusion, near the outer casing, is a sloped surface, and this slope extends from the side of the main shaft's outer peripheral wall away from the outer casing towards the direction away from the outer casing. The side of the blocking protrusion away from the outer casing is a second side, which is a vertical surface perpendicular to the central axis of the main shaft, or it is a sloped surface extending from the side of the main shaft's outer peripheral wall away from the outer casing. The side away from the outer peripheral wall of the main shaft is inclined in a direction away from the outer casing; The flow channel has multiple bends inside to make the flow resistance of the flow channel to the fluid inside the shell greater than the flow resistance of the flow channel to the fluid outside.

[0026] A sealing ring is typically provided between the housing and the main shaft of the drive shaft assembly to form a sealed cavity. The stator and mover are installed within this sealed cavity, and the sealing ring is used to prevent external gases, liquids, and other fluids from entering the sealed cavity. Furthermore, by creating a chamber and flow channel between the inner circumferential wall of the end cover and the outer circumferential wall of the main shaft, and by providing a blocking protrusion on the outer circumferential wall of the main shaft located within the chamber, and by incorporating multiple bends within the flow channel, not only can external fluids be further prevented from entering the sealed cavity, but leaked fluids within the sealed cavity can also be discharged to the outside.

[0027] Thirdly, this application provides a roller device, which includes a roller, a roller end fixing assembly according to any of the foregoing embodiments, and a drive shaft device according to any of the foregoing embodiments; The diameter of the roller is 70-120 mm, and the two ends of the roller 1 are fixedly connected to the first connecting piece of the roller end fixing assembly and the first connecting piece of the drive shaft device, respectively.

[0028] The roller device provided in this application has its two ends fixedly connected by the roller end fixing assembly and the drive shaft device provided in this application, respectively. While effectively ensuring the coaxial centering of both ends of the roller, the drive shaft device can provide power for the roller's self-rotation, meeting the requirement for self-driven rotation. If both ends of the roller are fixedly connected by the roller end fixing assembly, when the roller is used in conjunction with a large roller (diameter greater than 120 mm) to form a four-roller configuration (two rollers and two large rollers combined, i.e., the two main rollers and two auxiliary rollers scheme in the patent cited in the background art), the roller can only passively drive the wire mesh through the rotation of the large roller, and the wire mesh will carry it to rotate. In high-speed rotation scenarios, the cutting of the roller by the wire mesh will severely affect the service life of the roller. Furthermore, when the large roller stops rotating, the roller can only passively stop rotating slowly due to inertia. During this process, the friction between the wire mesh and the roller increases, and the cutting of the roller by the wire mesh becomes more severe. The roller device provided in this application can ensure the coaxial centering effect of both ends of the roller and also meet the requirements of high-speed rotation and rapid response to stop rotation in high-speed rotation scenarios.

[0029] Fourthly, this application provides a silicon rod slicing machine, which includes two first roller shaft devices and two second roller shaft devices. The diameter of the roller shaft of the first roller shaft device is larger than the diameter of the roller shaft of the second roller shaft device, and the second roller shaft device is the roller shaft device provided in this application. Two first roller shaft devices are arranged at intervals in the horizontal direction, and two second roller shaft devices are arranged at intervals in the horizontal direction and located between the two first roller shaft devices, and the roller shafts of the two second roller shaft devices are higher than the roller shafts of the two first roller shaft devices in the vertical direction.

[0030] The silicon rod slicing machine provided in this application, because its second roller shaft adopts the roller shaft device provided in this application, can effectively ensure the connection force and coaxiality between the roller shaft and the support, and can meet the ultra-high speed rotation of small diameter roller shafts. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 A partial cross-sectional view of a roller assembly including a roller end fixing component provided for an embodiment of this application; Figure 2 Another partial cross-sectional view of a roller assembly including a roller end fixing component provided for an embodiment of this application; Figure 3 Another partial cross-sectional view of a roller assembly including a roller end fixing component provided for an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the elastic element provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the second connector provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the first connector provided in an embodiment of this application; Figure 7 This is another structural schematic diagram of the second connector provided in an embodiment of this application; Figure 8 Another structural schematic diagram of the first connector provided in the embodiments of this application; Figure 9 A cross-sectional view of a drive shaft device including a roller end fixing assembly provided for an embodiment of this application; Figure 10 A partial cross-sectional view of a drive shaft device including a roller end fixing assembly provided for an embodiment of this application; Figure 11 Another partial cross-sectional view of a drive shaft device including a roller end fixing assembly provided for an embodiment of this application; Figure 12 A schematic diagram of the structure of a roller device including a roller end fixing assembly provided in an embodiment of this application.

[0033] Icons: 1-Roller; 2-Support component; 3-First connector; 30-Annular groove; 4-Second connector; 40-Snap-fit ​​protrusion; 41-Claw flap; 5-Force application structure; 50-Pull rod; 51-Elastic component; 510-Disc spring assembly; 52-Guide sleeve; 53-Guide sleeve nut; 54-Pressure cap; 55-Washer; 56-Drive component; 6-Third connector; 7-Outer shell; 70-End cap; 8-Cavity; 80-Blocking protrusion; 9-Flow channel. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] Example: This embodiment provides a roller end fixing assembly, which is used to fix the end of the roller 1 on the silicon rod slicing machine to the support member 2. The diameter of the roller 1 is 70-120 mm; Figure 1 , Figure 2 and Figure 3 As shown, the roller end fixing assembly includes a housing 7, a support member 2, a first connector 3, a second connector 4, and a force-applying structure 5. The support member 2 is rotatably mounted inside the housing 7 via a bearing. The end of the support member 2 that mates with the roller 1 is the first end of the support member 2, and the first end of the support member 2 has a tapered fit with the roller 1. The first connector 3 and the second connector 4 are both disposed inside the hollow support member 2, and the force-applying structure 5 is mounted on the support member 2. The first connector 3 and the second connector 4 each include a first end and a second end. The second end of the first connector 3 is engaged with the first end of the second connector 4, and the second end of the second connector 4 is connected to the force-applying structure 5. The first end of the first connector 3 is used to fixally connect to one end of the roller 1, and the force-applying structure 5 is used to apply a pulling or pushing force to the second connector 4 along the central axis of the support member 2, so that the first connector 3 and the second connector 4 are engaged, locked, or unlocked.

[0038] The roller end fixing assembly provided in this embodiment is used to support and fix the two ends of small-diameter rollers with a diameter of 70-120 mm on a silicon rod slicing machine. The "tapered fit" described in this embodiment refers to the fit between inner and outer surfaces with a taper. The taper is the ratio of the diameter of the base of the cone to the height of the cone body. According to the tightness of the fit, tapered fits can be divided into three types: clearance fit, transition fit, and interference fit.

[0039] When using the roller end fixing assembly to support and fix the roller 1, firstly, the first end of the first connecting piece 3 is fixedly connected to the end of the roller 1. Then, the second connecting piece 4 is placed inside the support piece 2, and the force-applying structure 5 is installed on the support piece 2. Next, the second end of the first connecting piece 3 is snapped into the first end of the second connecting piece 4. Then, the force-applying structure 5 applies a tensile force to the second connecting piece 4 along the central axis of the support piece 2 in a direction away from the first connecting piece 3, thereby locking the first connecting piece 3 and the second connecting piece 4 together. The axial tensile force increases the connection force between the first connecting piece 3 and the second connecting piece 4. Since the first end of the first connecting piece 3 is fixedly connected to the end of the roller 1, and the second end of the second connecting piece 4 is connected to the force-applying structure 5 and the force-applying structure 5 is installed on the support piece 2, the connection force between the roller 1 and the support piece 2 can also be increased. This effectively ensures the coaxiality between the roller 1 and the support piece 2, preventing the support piece 2 from failing due to fatigue accumulation or causing imbalance and instability in the shaft system where the roller 1 is located during the rotation of the roller 1.

[0040] Furthermore, the roller end fixing assembly provided in this embodiment can also unlock and separate the roller 1 from the support member 2. Specifically, when it is necessary to separate the roller 1 from the support member 2, the force-applying structure 5 first applies a pushing force to the second connecting member 4 along the central axis of the support member 2 toward the direction close to the first connecting member 3, thereby unlocking the locking relationship between the first connecting member 3 and the second connecting member 4. After the locking relationship is unlocked, the second end of the first connecting member 3 and the first end of the second connecting member 4 can be separated, thereby realizing the unlocking and separation between the roller 1 and the support member 2.

[0041] Compared with the prior art, the roller end fixing assembly provided in this embodiment applies a pulling force to the second connecting member 4 through the force-applying structure 5, thereby locking the first connecting member 3 and the second connecting member 4 together, thus tightening the roller 1 and effectively improving the connection force between the roller 1 and the support member 2. The tapered fit between the support member and the roller 1 effectively ensures the coaxiality between the roller 1 and the support member 2.

[0042] It should be noted that the two ends of the roller 1 are fixed to the support 2 in the same way, such as... Figure 1 and Figure 2 As shown, both ends of the roller shaft 1 can be supported and fixed with high strength by the roller shaft end fixing assembly, which effectively reduces the centrifugal inertial force generated when the roller shaft is rotating at ultra-high speed, and ensures the normal operation of the roller shaft system.

[0043] like Figure 3As shown, the force-applying structure 5 includes a pull rod 50 and an elastic element 51. The pull rod 50 is disposed inside the support member 2. The pull rod 50 includes a first end and a second end. The first end of the pull rod 50 is fixedly connected to the second end of the second connector 4. The elastic element 51 is connected between the inner wall of the support member 2 and the pull rod 50. The elastic element 51 is used to pull the pull rod 50 along the central axis of the support member 2 in a direction away from the roller shaft 1 under its own elastic force.

[0044] The pull rod 50 is used to transmit tension or thrust to the second connecting member 4. Simultaneously, the pull rod 50 can be coaxially arranged with the support member 2 to further ensure the coaxiality between the roller shaft 1 and the support member 2. Inside the support member 2, the elastic member 51 is initially in a compressed state. At this time, under the elastic recovery action of the elastic member 51, the elastic member 51 will pull the pull rod 50 along the central axis of the support member 2 in a direction away from the roller shaft 1, and then apply tension to the second connecting member 4 through the pull rod 50.

[0045] Therefore, when the force-applying structure 5 includes a pull rod 50 and an elastic element 51, the elastic recovery effect of the elastic element 51 can be used to achieve the locking between the first connecting member 3 and the second connecting member 4. Compared with the method of applying thrust using an electric or pneumatic telescopic structure, it does not require energy consumption and can effectively simplify the structure.

[0046] like Figure 4 As shown, the elastic element 51 includes multiple disc spring assemblies 510, each disc spring assembly 510 includes multiple disc springs connected in parallel, and the multiple disc spring assemblies 510 are connected in series.

[0047] A disc spring, also known as a disc spring, is a conical disc with a through hole in the center. To connect the pull rod 50 and the elastic element 51, the disc spring can be fitted over the pull rod 50 through the through hole.

[0048] Parallel connection of multiple disc springs refers to multiple disc springs distributed sequentially along their axial direction and protruding in the same direction. In this case, the multiple disc springs connected in parallel are stacked in the same direction.

[0049] After multiple disc springs are connected in parallel to form a disc spring group 510, the multiple disc spring groups 510 are distributed sequentially along their axial direction, such that the two disc springs located on the side of two adjacent disc spring groups 510 protrude in opposite directions. At this time, the multiple disc spring groups 510 are arranged alternately in opposite directions, that is, the multiple disc spring groups 510 are connected in series.

[0050] When the disc spring assembly 510 includes multiple disc springs connected in series and multiple disc spring assemblies 510 are connected in parallel, the elastic element 51 not only has the characteristic of parallel disc springs increasing elastic force, but also has the characteristic of series disc springs increasing elastic compression distance. Therefore, when the elastic element 51 in this embodiment is composed of multiple disc spring assemblies 510, the elastic element 51 can not only increase the elastic force, but also increase the compression distance, thereby providing sufficient tension for the second connecting member 4 in the limited space around the pull rod 50 to meet the locking requirements between the first connecting member 3 and the second connecting member 4.

[0051] There are no restrictions on the number of disc spring assemblies 510 or the number of disc springs in each disc spring assembly 510, as long as the elastic force and compression distance of the elastic element 51 can meet the usage requirements. For example, the number of disc springs in each disc spring assembly 510 must be at least seven, and the number of disc spring assemblies 510 must be at least ten.

[0052] like Figure 3 As shown, the force-applying structure 5 may also include a guide sleeve 52, a guide sleeve nut 53, a pressure cap 54, and multiple washers 55. The guide sleeve 52, guide sleeve nut 53, pressure cap 54, and multiple washers 55 are all sleeved on the outside of the pull rod 50, and the pressure cap 54 is located on the periphery of the second end of the pull rod 50. The guide sleeve nut 53 abuts against the pressure cap 54 at a position away from the second end of the pull rod 50 and is fixedly connected to the pull rod 50. The guide sleeve 52 abuts against the side of the guide sleeve nut 53 away from the pressure cap 54. Multiple washers 55 are distributed at intervals along the axial direction of the pull rod 50 on the side of the guide sleeve 52 away from the guide sleeve nut 53, and the washers 55 close to the guide sleeve 52 abut against the guide sleeve 52.

[0053] In the initial state, the elastic force of the elastic element 51 can be transmitted to the guide sleeve nut 53 through the washer 55, thereby driving the pull rod 50 to move along the central axis of the support 2 in a direction away from the first connecting member 3 to apply tension to the second connecting member 4. During the tensioning process of the pull rod 50, the guide sleeve 52 and the guide sleeve nut 53 can also guide the pull rod 50, which helps to further ensure the coaxiality between the roller shaft 1 and the support 2.

[0054] like Figure 3 As shown, the force-applying structure 5 also includes a drive member 56, which is disposed on one side of the second end of the pull rod 50. The output end of the drive member 56 is used to push the pull rod 50 along the central axis of the support member 2 toward the direction close to the roller shaft 1.

[0055] When it is necessary to separate the roller shaft 1 and the support member 2, the drive member 56 can be activated so that the output end of the drive member 56 abuts against the second end of the pull rod 50 and pushes the pull rod 50 along the central axis of the support member 2 toward the roller shaft 1. Then, the pull rod 50 pushes the second connector 4 toward the first connector 3 until the locking state between the second connector 4 and the first connector 3 is unlocked.

[0056] During the process of the drive component 56 pushing the pull rod 50, the drive component 56 will further compress the elastic component 51 through the pull rod 50. When the roller shaft 1 and the support component 2 are reconnected, when the output end of the drive component 56 returns to its original position, the elastic component 51 can pull the pull rod 50 again under the elastic recovery action, so that the second connecting component 4 and the first connecting component 3 are re-engaged and locked. Therefore, the drive component 56 only needs to be activated during the process of separating the roller shaft 1 and the support component 2, which is convenient to operate.

[0057] In this embodiment, the drive member 56 can be a pneumatic, electric, or hydraulic telescopic actuator. Specifically, the drive member 56 can be a cylinder, in which case the output end of the drive member 56 can abut against the end face of the second end of the pull rod 50. When the drive member 56 is activated, the piston rod of the drive member 56 extends, thereby pushing the pull rod 50 along the central axis of the support member 2 toward the direction closer to the roller shaft 1.

[0058] like Figure 3 As shown, the roller end fixing assembly provided in this embodiment may further include a third connector 6. The third connector 6 is disposed between the second connector 4 and the force-applying structure 5, and the third connector 6 is engaged with the second connector 4 and connected to the force-applying structure 5.

[0059] When the gap between the second connector 4 and the force-applying structure 5 is large, the second connector 4 and the force-applying structure 5 can be connected by the third connector 6. It can be seen that the third connector 6 is used to play a transitional connection role.

[0060] The third connector 6 is snapped into the second connector 4, which makes it easy to install and remove the second connector 4 from the third connector 6.

[0061] It should be noted that when the third connector 6 is positioned between the second connector 4 and the force-applying structure 5, the tension applied by the force-applying structure 5 will be transmitted to the second connector 4 through the third connector 6. During this process, the locking joint between the second connector 4 and the third connector 6 will also lock together, thereby improving the connection stability between the third connector 6 and the second connector 4. Since the separation of the roller 1 and the support 2 only requires the separation of the first connector 3 and the second connector 4, when the force-applying structure 5 applies a thrust, the thrust only needs to be transmitted to the second connector 4 through the third connector 6. At this time, the locking joint between the third connector 6 and the second connector 4 does not need to be unlocked by the thrust of the force-applying structure 5.

[0062] Furthermore, the third connector 6 and the second connector 4 can be engaged with each other through an annular groove and a convex ring. Specifically, the second connector 4 is hollow, the convex ring is disposed on the inner peripheral wall of the second connector 4, the annular groove is disposed on the outer peripheral wall of the third connector 6, and the convex ring is engaged in the annular groove.

[0063] like Figure 3As shown, one of the first connector 3 and the second connector 4 is provided with an annular groove 30 extending circumferentially therein, and the other is provided with a snap-fit ​​protrusion 40, which snaps into the annular groove 30.

[0064] The interlocking mechanism of the annular groove 30 and the snap-fit ​​protrusion 40 not only enables the snap-fit ​​between the first connector 3 and the second connector 4, but also makes the tension distribution of the second connector 4 on the first connector 3 more balanced when the force-applying structure 5 applies tension, further improving the coaxiality between the roller 1 and the support 2.

[0065] like Figure 6 and Figure 8 As shown, the first connector 3 is a rivet, as... Figure 5 and Figure 7 As shown, the second connector 4 is a pull claw; the pull stud is provided with an annular groove 30, and the pull claw includes multiple claw flaps 41 that can open or close, each claw flap 41 is provided with a snap-fit ​​protrusion 40; the multiple claw flaps 41 of the pull claw are used to close under the pulling force applied by the force-applying structure 5 to clamp the pull stud, and the snap-fit ​​protrusion 40 is used to snap into the annular groove 30 when the multiple claw flaps 41 are closed.

[0066] Compared to structures with fixed shapes, such as sleeves, the pull claws can engage with the annular groove 30 on the rivet under the pulling force applied by the force-applying structure 5 to close multiple claw flaps 41, thereby gripping the rivet and effectively improving the connection strength between the first connector 3 and the second connector 4. Correspondingly, when the force-applying structure 5 applies a pushing force, the multiple claw flaps 41 of the pull claws can open again, thereby releasing the rivet and creating a gap between the locking protrusion 40 and the annular groove 30. At this time, pulling the roller shaft 1 in a direction away from the second connector 4 can pull the first connector 3 out of the support member 2, realizing the separation of the first connector 3 and the second connector 4.

[0067] Therefore, the first connector 3 is a rivet and the second connector 4 is a claw, which can further improve the connection strength between the first connector 3 and the second connector 4, while effectively improving the ease of separation of the first connector 3 and the second connector 4.

[0068] To improve the performance of pull claws and rivets, such as Figure 5 and Figure 7 As shown, the claw flaps 41 of the pull claw can be inclined. Specifically, the pull claw consists of a straight tube and multiple claw flaps 41 fixed at one end of the straight tube. All claw flaps 41 are inclined from one end near the straight tube to the other end in a direction away from the central axis of the straight tube. Correspondingly, as... Figure 6 As shown, the circumferential sidewall of the annular groove on the rivet is an inclined surface, and the inclined surface slopes outward from the side located at the bottom of the groove to the side located at the opening of the groove.

[0069] It should be noted that when the claw flap 41 is inclined and the circumferential sidewall of the annular groove is an inclined surface, the inclination of the mating surface between the claw flap 41 and the annular groove must be consistent so that the claw and the rivet can fully cooperate.

[0070] There are no restrictions on the shape of the pull claw and the pull pin. For example, the pull claw can be... Figure 3 and Figure 5 The shape shown can also be Figure 7 , Figure 10 and Figure 11 The shape shown. The rivet can be... Figure 3 and Figure 6 The shape shown can also be Figure 8 , Figure 10 and Figure 11 The shape shown.

[0071] Furthermore, there is no limit to the number of claw segments 41 of the pull claw, nor is there a limit to the spacing between two adjacent claw segments 41, as long as the tension between the pull claw and the pull pin can meet the locking requirements.

[0072] Optionally, the end of the support member 2 that mates with the roller shaft 1 is the first end of the support member 2, such as... Figure 9 , 10 As shown, the first end of the support member 2 extends out of the outer shell 7 and can be inserted into the end slot of the roller 1. The outer peripheral wall of the first end of the support member 2 and the inner peripheral wall of the slot are both conical surfaces so that the support member 2 and the roller 1 are in a tapered fit.

[0073] The roller shaft 1 and the support member 2 are connected by a tapered fit. When the first connecting member 3, the second connecting member 4 and the force-applying structure 5 lock the roller shaft 1, the tapered fit positions the support member 2 and the roller shaft 1 coaxially, thereby improving the coaxiality of the support member 2 and the roller shaft 1.

[0074] Optionally, the end of the support member 2 that mates with the roller shaft 1 is the first end of the support member 2, such as... Figures 1-3 As shown, the first end of the support member 2 is located inside the outer shell 7. The first end of the support member 2 is provided with a mating groove. The end of the roller shaft 1 can extend into the mating groove. The inner peripheral wall of the mating groove and the outer peripheral wall of the roller shaft are both conical surfaces so that the support member 2 and the roller shaft 1 are taper-fitted.

[0075] The roller shaft 1 and the support member 2 are connected by a tapered fit. When the first connecting member 3, the second connecting member 4, and the force-applying structure 5 lock the roller shaft 1, the tapered fit provides coaxial positioning for the support member 2 and the roller shaft 1, improving their coaxiality. Figure 9 , Figure 10 and Figure 11As shown, this embodiment also provides a drive shaft device, which includes a drive shaft assembly and the aforementioned roller end fixing assembly. The drive shaft assembly includes a main shaft, a mover, and a stator. The main shaft is rotatably mounted in the housing 7 via bearings. The mover is sleeved on the outer periphery of the main shaft and fixedly connected to the main shaft. The stator is sleeved on the outer periphery of the mover and coaxially arranged with the mover. There is a gap between the stator and the mover. The main shaft is a support member 2. The first connecting member 3 and the second connecting member 4 in the roller end fixing assembly are both disposed inside the main shaft.

[0076] When roller 1 is used as the drive shaft in a silicon rod slicing machine, the end of roller 1 needs to be connected to the output shaft of the rotary drive device. At this time, the drive shaft assembly is the rotary drive device, and the main shaft in the drive shaft assembly is the output shaft. The stator and mover are used to cooperate with each other to realize the rotation of the main shaft within the housing 7. The bearing between the main shaft and the housing 7 is used to support the main shaft, so that the main shaft can rotate within the housing 7.

[0077] It should be noted that, since the drive shaft device provided in this embodiment includes the above-mentioned roller end fixing assembly, the drive shaft device can also use the force-applying structure 5 to apply a pulling force to the second connecting member 4 along the central axis of the support member 2 in a direction away from the first connecting member 3, thereby locking the first connecting member 3 and the second connecting member 4 together, thereby increasing the connection force between the roller shaft 1 and the support member 2, ensuring the coaxiality between the roller shaft 1 and the support member 2, and preventing the support member 2 from failing due to fatigue accumulation or causing the shaft system where the roller shaft 1 is located to become unbalanced and unstable during the rotation of the roller shaft 1.

[0078] To further improve the coaxiality and rigidity between roller 1 and the main shaft, such as Figure 3 and Figure 9 As shown, the connection between roller 1 and the main shaft can be a tapered surface fit. There are two types of this tapered surface fit, one of which is as follows: Figure 3 As shown, the end of roller 1 is inserted into the hollow part of the main shaft. At this time, the outer peripheral wall of roller 1 near its end and the inner peripheral wall of the main shaft near the hollow part of roller 1 are both conical surfaces. The conical surface on roller 1 slopes away from the central axis of roller 1 from one side near the main shaft to the other, while the conical surface on the main shaft slopes towards the central axis of the main shaft from one side near roller 1 to the other. Another conical surface fit is as follows... Figure 9 As shown, a hollow connector is provided at the end of the main shaft near the roller 1, and a connector groove is provided at the end of the roller 1. The connector is inserted into the connector groove. At this time, the outer peripheral wall of the connector and the inner peripheral wall of the connector groove are both conical. The conical surface of the connector is inclined from one side near the roller 1 to the other side towards the direction near the central axis of the main shaft, and the conical surface of the connector groove is inclined from one side near the main shaft to the other side towards the direction near the central axis of the roller 1.

[0079] Optionally, based on the fit between roller 1 and the tapered surface of the main shaft, such as Figure 3 , 10 As shown, a vertical end face can also be provided at the end of the roller 1, which cooperates with the end face of the main shaft or the end cover to further improve the coaxiality and rigidity between the roller 1 and the main shaft.

[0080] like Figure 10 and Figure 11 As shown, the drive shaft assembly also includes an annular end cap 70, which is sleeved on the outside of the main shaft and fixed to the end of the housing 7. An annular chamber 8 and an annular flow channel 9 are formed between the inner peripheral wall of the end cap 70 and the outer peripheral wall of the main shaft, and the chamber 8 is located on the side of the annular flow channel 9 away from the housing 7. The outer peripheral wall of the main shaft located in the chamber 8 is provided with a plurality of blocking protrusions 80 arranged sequentially along its axial direction. The first side surface of the blocking protrusions 80 near the housing 7 is a slope. The obstruction protrusion 80 is inclined from the side located on the outer peripheral wall of the main shaft to the side away from the outer peripheral wall of the main shaft in a direction away from the outer casing 7; the side away from the outer casing 7 of the obstruction protrusion 80 is the second side surface, which is a vertical surface perpendicular to the central axis of the main shaft, or the second side surface is an inclined surface and the second side surface is inclined from the side located on the outer peripheral wall of the main shaft to the side away from the outer peripheral wall of the main shaft in a direction away from the outer casing 7; the interior of the flow channel 9 is provided with multiple bends so that the flow resistance of the flow channel 9 to the fluid inside the outer casing 7 is greater than the flow resistance of the flow channel 9 to the external fluid.

[0081] In this drive shaft assembly, a sealing ring is usually provided between the housing 7 and the main shaft to form a sealed cavity between the housing 7 and the main shaft. The stator and mover are installed in this sealed cavity. The sealing ring is used to prevent external gases, liquids and other fluids from entering the sealed cavity.

[0082] A chamber 8 and a flow channel 9 are provided between the inner peripheral wall of the end cover 70 and the outer peripheral wall of the main shaft. A blocking protrusion 80 is provided on the outer peripheral wall of the main shaft located in the chamber 8, and multiple bends are provided inside the flow channel 9. This not only further prevents external fluid from entering the sealed cavity, but also allows the fluid leaking from the sealed cavity to be discharged to the outside.

[0083] To make the flow resistance of the flow channel 9 to the fluid inside the shell 7 greater than the flow resistance of the flow channel 9 to the external fluid, this can be achieved by adjusting the height of the bend relative to the central axis of the main shaft and the width variation of the flow channel 9 at the bend. Since the flow channel 9 structure with greater flow resistance to the internal fluid than to the external fluid is existing technology, the specific setting position of each bend and the specific width variation of the flow channel 9 will not be described in detail here.

[0084] Specifically, the first side of the blocking protrusion 80 is inclined from the side located on the outer peripheral wall of the main shaft to the side away from the outer peripheral wall of the main shaft in a direction away from the outer casing 7, which can guide the fluid flowing outward in the sealed cavity, so that the fluid in the sealed cavity can be discharged to the outside in a timely manner.

[0085] Furthermore, since the bends inside the flow channel 9 make the flow resistance of the flow channel 9 to the fluid inside the outer shell 7 greater than the flow resistance of the flow channel 9 to the external fluid, the bends inside the flow channel 9 will not generate excessive resistance to the fluid inside the sealed cavity, and the fluid inside the sealed cavity can flow to the outside.

[0086] The second side of the blocking protrusion 80, whether it is a vertical plane perpendicular to the central axis of the main shaft or an inclined plane (the inclined plane slopes from the side located on the outer peripheral wall of the main shaft to the side away from the outer peripheral wall of the main shaft, moving away from the outer casing 7), can effectively block the fluid flowing from the outside into the sealed cavity. To further enhance the blocking effect of the blocking protrusion 80, there can be multiple blocking protrusions 80, and these multiple blocking protrusions 80 are distributed sequentially along the central axis of the end cover 70.

[0087] In addition, the bends inside the flow channel 9 make the flow resistance of the flow channel 9 to the fluid inside the outer shell 7 greater than the flow resistance of the flow channel 9 to the external fluid. Therefore, the bends inside the flow channel 9 can further block the external fluid and prevent the external fluid from flowing into the sealed cavity.

[0088] As can be seen, this embodiment can gradually weaken the fluid flowing from the outside to the sealed cavity by blocking the protrusion 80 and the bend inside the flow channel 9, thereby effectively preventing external liquids, gases and other fluids from entering the sealed cavity between the main shaft and the outer casing 7.

[0089] In this embodiment, to facilitate closed-loop speed control based on the spindle speed to achieve precise speed, an encoder for detecting the spindle speed can also be installed on the spindle.

[0090] like Figure 12As shown, this embodiment provides a roller device, which includes a roller 1, the aforementioned roller end fixing assembly, and the aforementioned drive shaft device. The diameter of the roller 1 is 70-120 mm, and both ends of the roller 1 are fixedly connected to the first connecting member of the roller end fixing assembly and the first connecting member of the drive shaft device, respectively. In the roller 1 device provided in this embodiment, the two ends of the roller 1 are fixedly connected to the roller end fixing assembly and the drive shaft device provided in this application, respectively. While effectively ensuring the coaxial centering effect of the two ends of the roller 1, the drive shaft device can provide power for the rotation of the roller 1, meeting the requirement of self-driven rotation of the roller 1. If both ends of the roller are fixedly connected by roller end fixing components, and the roller is used in conjunction with a large roller (diameter greater than 120 mm) to form a four-roller configuration (two rollers and two large rollers combined, i.e., the two main rollers and two auxiliary rollers scheme in the patent cited in the background art), the roller can only passively drive the wire mesh through the rotation of the large roller, and the wire mesh will carry it to rotate. In high-speed rotation scenarios, the cutting of the roller by the wire mesh will seriously affect the service life of the roller. Moreover, when the large roller stops rotating, the roller can only passively stop rotating slowly by inertia. During this process, the friction between the wire mesh and the roller increases, and the cutting of the roller by the wire mesh is more severe. However, the roller device provided in this application, while ensuring the coaxial centering effect of both ends of the roller, can also meet the requirements of high-speed rotation and rapid response to stop rotation in high-speed rotation scenarios.

[0091] Fourthly, this application provides a silicon rod slicing machine, which includes two first roller shaft devices and two second roller shaft devices. The diameter of the roller shaft of the first roller shaft device is larger than the diameter of the roller shaft of the second roller shaft device, and the second roller shaft device is the roller shaft device provided in this application. Two first roller shaft devices are arranged at intervals in the horizontal direction, and two second roller shaft devices are arranged at intervals in the horizontal direction and located between the two first roller shaft devices, and the roller shafts of the two second roller shaft devices are higher than the roller shafts of the two first roller shaft devices in the vertical direction.

[0092] The silicon rod slicing machine provided in this application, because its second roller shaft adopts the roller shaft device provided in this application, can effectively ensure the connection force and coaxiality between the roller shaft and the support, and can meet the ultra-high speed rotation of small diameter roller shafts.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A roller end fixing assembly, characterized in that, The roller end fixing assembly is used to fix the end of the roller on the silicon rod slicing machine to the support, and the diameter of the roller is 70-120 mm; The roller end fixing assembly includes a housing, a support, a first connector, a second connector, and a force-applying structure; The support member is rotatably mounted inside the housing via a bearing. The end of the support member that mates with the roller shaft is the first end of the support member, and the first end of the support member is taperedly fitted with the roller shaft. Both the first connector and the second connector are disposed inside the hollow support member, and the force-applying structure is mounted on the support member. Both the first connector and the second connector include a first end and a second end. The second end of the first connector is engaged with the first end of the second connector, and the second end of the second connector is connected to the force-applying structure. The first end of the first connector is used to be fixedly connected to one end of the roller shaft, and the force-applying structure is used to apply a tensile or pushing force to the second connector along the central axis of the support member, so as to lock or unlock the first connector and the second connector.

2. The roller end fixing assembly according to claim 1, characterized in that, The force-applying structure includes a pull rod and an elastic element. The pull rod is disposed inside the support member and coaxially with the support member. The pull rod includes a first end and a second end. The first end of the pull rod is fixedly connected to the second end of the second connector. The elastic element is connected between the inner wall of the support member and the pull rod. The elastic element is used to pull the pull rod along the central axis of the support member away from the roller shaft under its own elastic force.

3. The roller end fixing assembly according to claim 2, characterized in that, The elastic element includes multiple disc spring groups, each disc spring group includes multiple disc springs connected in parallel, and the multiple disc spring groups are connected in series.

4. The roller end fixing assembly according to claim 2, characterized in that, The force-applying structure further includes a guide sleeve, a guide sleeve nut, a pressure cap, and multiple washers. The guide sleeve, the guide sleeve nut, the pressure cap, and the multiple washers are all sleeved on the outside of the pull rod, and the pressure cap is located on the periphery of the second end of the pull rod. The guide sleeve nut abuts against the pressure cap and is fixedly connected to the pull rod. The guide sleeve abuts against the side of the guide sleeve nut away from the pressure cap. The multiple washers are distributed at intervals along the axial direction of the pull rod on the side of the guide sleeve away from the guide sleeve nut, and the washers close to the guide sleeve abut against the guide sleeve.

5. The roller end fixing assembly according to claim 2, characterized in that, The force-applying structure also includes a driving member, which is disposed on one side of the second end of the pull rod. The output end of the driving member is used to push the pull rod along the central axis of the support member toward the direction close to the roller shaft.

6. The roller end fixing assembly according to claim 1, characterized in that, The roller end fixing assembly further includes a third connector, which is disposed between the second connector and the force-applying structure, and is engaged with the second connector and connected to the force-applying structure.

7. The roller end fixing assembly according to any one of claims 1-6, characterized in that, One of the first connector and the second connector is provided with an annular groove extending circumferentially therein, and the other is provided with a snap-fit ​​protrusion, the snap-fit ​​protrusion snapping into the annular groove.

8. The roller end fixing assembly according to claim 7, characterized in that, The first connector is a pull stud, and the second connector is a pull claw; The pull stud is provided with the annular groove, and the pull claw includes multiple claw flaps that can open or close, each claw flap being provided with the snap-fit ​​protrusion; The multiple claw segments of the pull claw are used to close under the tensile force applied by the force-applying structure to clamp the pull stud, and the snap-fit ​​protrusion is used to snap into the annular slot when the multiple claw segments are closed.

9. The roller end fixing assembly according to claim 7, characterized in that, The first end of the support extends outside the housing and can be inserted into the end slot of the roller shaft. Both the outer peripheral wall of the first end of the support and the inner peripheral wall of the slot are conical surfaces, so that the support and the roller shaft have a tapered fit; or... The first end of the support member is located inside the outer shell. The first end of the support member is provided with a mating groove. The end of the roller shaft can extend into the mating groove. The inner peripheral wall of the mating groove and the outer peripheral wall of the roller shaft are both conical surfaces so that the support member and the roller shaft are taper-fitted.

10. A drive shaft device, characterized in that, The drive shaft device includes a drive shaft assembly and a roller end fixing assembly as described in any one of claims 1-9; The drive shaft assembly includes a main shaft, a mover, and a stator. The main shaft is rotatably mounted in the housing via bearings. The mover is sleeved on the outer periphery of the main shaft and fixedly connected to the main shaft. The stator is sleeved on the outer periphery of the mover and coaxially arranged with the mover. There is a gap between the stator and the mover. The main shaft is the support member, and the first connector and the second connector in the roller end fixing assembly are both disposed inside the main shaft.

11. The drive shaft device according to claim 10, characterized in that, The drive shaft assembly also includes an annular end cap, which is sleeved on the outside of the main shaft and fixed to the end of the housing. An annular chamber and an annular flow channel are formed between the inner peripheral wall of the end cap and the outer peripheral wall of the main shaft, and the chamber is located on the side of the annular flow channel away from the outer shell. The main shaft has a plurality of blocking protrusions arranged sequentially along its axial direction on the outer peripheral wall located inside the cavity. The first side of the blocking protrusion near the outer shell is a first side surface, which is inclined and slopes away from the outer peripheral wall of the main shaft towards the direction away from the outer shell. The side of the blocking protrusion away from the outer shell is a second side surface, which is a vertical surface perpendicular to the central axis of the main shaft, or the second side surface is an inclined surface and slopes away from the outer peripheral wall of the main shaft towards the direction away from the outer shell. The flow channel has multiple bends inside to make the flow resistance of the flow channel to the fluid inside the shell greater than the flow resistance of the flow channel to the external fluid.

12. A roller assembly, characterized in that, The roller assembly includes a roller, a roller end fixing assembly as described in any one of claims 1-9, and a drive shaft assembly as described in any one of claims 10-11; The diameter of the roller is 70-120 mm, and the two ends of the roller are fixedly connected to the first connector of the roller end fixing assembly and the first connector of the drive shaft device, respectively.

13. A silicon rod slicing machine, characterized in that, The silicon rod slicing machine includes two first roller shaft devices and two second roller shaft devices. The diameter of the roller shaft of the first roller shaft device is larger than the diameter of the roller shaft of the second roller shaft device. The second roller shaft device is the roller shaft device as described in claim 12. Two first roller assemblies are arranged horizontally at intervals, and two second roller assemblies are arranged horizontally at intervals and located between the two first roller assemblies, with the rollers of the two second roller assemblies being higher than the rollers of the two first roller assemblies in the vertical direction.

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