Timed rebound system for charging buckle of single crystal furnace

Abstract

The invention provides a single crystal furnace charging buckle timed rebound system, which comprises a charging buckle mechanism, which comprises two connecting plates capable of relatively rotating; the gear assembly comprises a timing group and an alarm control group; one end of the transmission rod assembly is connected with the feeding buckle mechanism, and the other end of the transmission rod assembly is linked with the gear assembly; when the feeding buckle mechanism is unfolded, the transmission rod assembly triggers the timing set to start timing; and when timing is finished, the alarm control group triggers the alarm to prompt, and meanwhile, the gear assembly drives the charging buckle mechanism to be automatically retracted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of single crystal furnace, in particular to a single crystal furnace feeding buckle timing rebound system. BACKGROUND

[0002] At present, the CZ method (direct pulling method) as the mainstream technology for the production of semiconductor silicon single crystal and photovoltaic grade single crystal silicon has entered the mature application stage. With the rapid increase of demand for large-size crystals in the downstream chip and photovoltaic industries, the diameter of the crystals produced by the single crystal furnace has broken through from the traditional 8 inches and 12 inches to 18 inches and 21 inches, and the length of the crystals has been increased synchronously, resulting in the extension of the single crystal growth cycle from the original 3-5 days to 7-10 days, and the requirement for the continuity and stability of the production process has been significantly improved. However, unlike the technical upgrade of the crystal size and the growth cycle, the operation mode of the feeding buckle, which is the core safety protection link of the single crystal furnace, still remains in the original stage of "manual control", and the safety foolproof measures have not been iterated synchronously, forming an obvious technical short board.

[0003] The existing single crystal furnace feeding buckle is installed above the lower edge of the sub-chamber, and its function is to fix the feeding device during the feeding stage to enable the silicon material to be smoothly added to the crucible. However, the entire operation process completely relies on manual operation: before each feeding of the machine, the operator needs to manually deploy the buckle; after the feeding is completed, the operator needs to manually fold the buckle again. This mode has multiple risks: on the one hand, the single crystal furnace production line usually adopts multi-machine rotation operation, and the operator needs to handle multiple tasks such as feeding, seed crystal stabilization, parameter monitoring, etc., which is easy to "forget to fold the buckle" due to busy work and distraction; on the other hand, during the subsequent processes such as seed crystal installation and stabilization, the operator may unintentionally put down the buckle again due to limb misoperation or operation inertia.

[0004] More importantly, if the buckle is not folded, the crystal rod will interfere with the buckle during the crystal growth process, which may cause the seed crystal to break and the crystal to be scrapped, or the tungsten wire rope to break and cause the sub-chamber to shift and the high-temperature silicon melt in the furnace to leak, resulting in direct economic losses of tens of thousands to hundreds of thousands of yuan per furnace, and even triggering safety production accidents such as fire and high-temperature burns, which seriously threatens the personal safety of the operators and the production order of the workshop. In addition, the existing buckle is not equipped with any early warning or automatic reset mechanism, and once an operation error occurs, it can only be discovered after the device abnormally alarms or fails, lacking the ability to prevent in advance. SUMMARY

[0005] In view of the problems existing in the feeding buckle of the prior art, the present application provides a single crystal furnace feeding buckle timing rebound system, which has the functions of timing automatic reset and early warning, and avoids human errors.

[0006] To achieve the above object and other related objects, the present application provides a single crystal furnace feeding buckle timing rebound system, which comprises: a feeding buckle mechanism comprising two connecting plates that can rotate relative to each other; a gear assembly comprising a timing group, a buzzer control group and a rebound mechanism; a transmission rod assembly, one end of which is connected with the feeding buckle mechanism and the other end of which is linked with the gear assembly; wherein, when the feeding buckle mechanism is unfolded, the transmission rod assembly triggers the timing group to start timing; when the timing ends, the buzzer control group triggers an alarm prompt, and at the same time, the gear assembly drives the feeding buckle mechanism to automatically fold up.

[0007] Optionally, the timing group comprises: a main gear; an intermediate gear coaxially arranged with the main gear and synchronously rotating; a transmission gear engaged with the intermediate gear; an escapement comprising a hairspring, an escapement fork and an escapement wheel; the escapement wheel is engaged with the transmission gear.

[0008] Optionally, it further comprises: a profile gear engaged with the main gear; a second ratchet coaxially arranged with the profile gear and synchronously rotating; a first ratchet engaged with the second ratchet; a clockwork mechanism; wherein, when the feeding buckle mechanism is unfolded, the transmission rod assembly exerts pressure on the first ratchet to make it rotate in one direction, and then the second ratchet and the profile gear drive the main gear to rotate and tighten the clockwork mechanism.

[0009] Optionally, the rebound mechanism comprises: a connecting rod assembly composed of a first connecting rod and a second connecting rod, one end of each of the first connecting rod and the second connecting rod is hingedly connected to the connecting plate of the feeding buckle, and the other end of each of the first connecting rod and the second connecting rod is movably connected; a disc coaxially arranged with the second ratchet, the disc edge is provided with at least one notch; a cam rod, one end of which is fixed to the bottom of the second ratchet and the other end of which is in contact with the connecting rod assembly; wherein, when the timing ends, the disc rotates to the notch aligning with the cam rod, the cam rod sinks into the notch, the cam rod hits the connecting rod assembly, and the feeding buckle mechanism folds up.

[0010] Optionally, the connecting rod assembly further comprises a first elastic device, both ends of the first elastic device are fixedly connected to the first connecting rod and the second connecting rod, respectively.

[0011] Optionally, the buzzer control group comprises: a knocking gear set engaged with the second ratchet; a knocking wheel, the edge of which is provided with at least one groove; a knocking hammer, one end of which is engaged with the knocking gear set and the other end of which corresponds to the groove of the knocking wheel; wherein, when the timing ends, the knocking wheel rotates to the groove aligning with the knocking hammer, and the knocking hammer knocks and makes a sound under the potential energy released by the clockwork mechanism.

[0012] Optionally, the striking gear set includes: a striking gear that meshes with the striking hammer; a third transmission gear that meshes with the second ratchet; and the striking gear and the third transmission gear rotating coaxially.

[0013] Optionally, it also includes a reset assembly; a reset button; and a reset connecting rod connected to the reset button, with both ends of the reset connecting rod connected to the main gear and the shaped gear, respectively. When the reset button is pressed, the reset connecting rod disengages the transmission connection between the striking wheel, the shaped gear, and the second ratchet, instantly releasing the potential energy stored in the spring mechanism. The striking wheel and the shaped gear then idle, and the feeding latch mechanism retracts.

[0014] Optionally, it further includes: a stop pin, located above the shaped gear and connected to the reset connecting rod; and a blocking member, located above the shaped gear, passing through the shaped gear and fixedly connected to the striking wheel below.

[0015] Optionally, the feeding latch mechanism, gear assembly, and transmission rod assembly are made of nickel-based alloy.

[0016] As described above, the single crystal furnace feeding buckle timed rebound system provided by the present invention has at least the following beneficial technical effects: The single crystal furnace feeding buckle timed rebound system includes a timing group, a rebound mechanism, and an alarm control group, enabling the feeding buckle to automatically retract after a preset time. The double connecting rod assembly and elastic device in the rebound mechanism ensure that the buckle's connecting plate can be completely closed. The alarm control group uses gear transmission and knocking sound to issue a warning simultaneously when the buckle rebounds, avoiding accidental operation by personnel.

[0017] The single crystal furnace feeding buckle timed rebound system also includes a manual reset mechanism, which takes into account both automatic operation and manual intervention, reduces equipment maintenance costs, and adapts to the production needs of frequent process adjustments in single crystal furnaces. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of the single crystal furnace feeding buckle timed rebound system provided by the present invention.

[0019] Figure 2 Displayed as Figure 1 The diagram shows the structure of the feeding clip.

[0020] Figure 3 The image shows Figure 1 Side view of the structure shown.

[0021] Figure 4 Displayed as Figure 1 A structural diagram from another angle.

[0022] Figure 5 Displayed as Figure 1 Another structural diagram from a different angle.

[0023] Reference numerals: 10, connecting plate; 20, transmission rod assembly; 201, first transmission rod; 202, second transmission rod; 203, first universal joint shaft; 204, second universal joint shaft; 31, main gear; 32, intermediate gear; 33, transmission gear; 331, first transmission gear; 331a, first main transmission gear; 331b, first auxiliary transmission gear; 332, second transmission gear; 332a, second main transmission gear; 332b, second auxiliary transmission gear; 34, escapement mechanism; 341, hairspring; 342, escape fork; 343, escape wheel; 35, non-standard gear. 36. First ratchet; 37. Second ratchet; 38. Mainspring mechanism; 381. First mainspring; 382. Second mainspring; 39. Connecting rod assembly; 391. First connecting rod; 392. Second connecting rod; 393. First elastic device; 40. Disc; 41. Notch; 42. Cam rod; 421. Positioning block; 422. Second elastic device; 43. Striking gear set; 431. Striking gear; 432. Third transmission gear; 44. Striking wheel; 441. Groove; 45. Striking hammer; 46. Reset button; 47. Reset connecting rod; 48. Stop pin; 49. Blocking element. Detailed Implementation

[0024] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0025] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Although the illustrations only show components related to the present invention and are not drawn according to the actual number, shape and size of the components, the shape, quantity, positional relationship and proportion of each component can be arbitrarily changed under the premise of realizing the technical solution of this invention, and the layout of the components may also be more complex.

[0026] This embodiment provides a timed springback system for a single crystal furnace feeding clip, such as... Figure 1As shown, the single crystal furnace charging latch timing and rebound system of this embodiment includes: a charging latch mechanism, including two relatively rotatable connecting plates 10; a gear assembly, including a timing group, an alarm control group, and a rebound mechanism; and a transmission rod assembly 20, one end of which is connected to the charging latch mechanism, and the other end of which is linked to the gear assembly; wherein, when the charging latch mechanism unfolds, the connecting rod assembly triggers the timing group to start timing; when the timing ends, the alarm control group triggers an alarm prompt, and at the same time, the rebound mechanism automatically closes the charging latch mechanism.

[0027] like Figure 1 As shown, the timing assembly includes a main gear 31, an intermediate gear 32, a drive gear 33, and an escapement mechanism 34. The intermediate gear 32 is coaxially arranged with the main gear 31 and rotates synchronously. The drive gear 33 meshes with the intermediate gear 32. The escapement mechanism 34 includes a hairspring 341, an escape fork 342, and an escape wheel 343, with the escape wheel 343 meshing with the drive gear 33. Specifically, when the escape wheel 343 rotates, the exit and inlet plates of the escape fork 342 engage, causing the escape fork 342 to swing back and forth. The other end of the escape fork 342 is connected to the hairspring 341. The escapement mechanism 34 ensures that the gear assembly rotates at a constant speed driven by the mainspring.

[0028] Specifically, the transmission gear 33 includes a first transmission gear 331 and a second transmission gear 332, with the first transmission gear 331 meshing with the intermediate gear 32. For example... Figure 5 As shown, it is displayed as Figure 1 The diagram shows a bottom view of the single crystal furnace charging latch timing springback system. The first transmission gear 331 includes a first main transmission gear 331a and a first auxiliary transmission gear 331b, which are coaxially arranged and form an inseparable integral structure, constituting a double gear. Similarly, the second transmission gear 332 includes a second main transmission gear 332a and a second auxiliary transmission gear 332b, which are coaxially arranged and form an inseparable integral structure. The meshing relationship is as follows: the first auxiliary transmission gear 331b of the first transmission gear 331 meshes with the intermediate gear 32; the first main transmission gear 331a meshes with the second auxiliary transmission gear 332b of the second transmission gear 332, and the second main transmission gear 332a of the second transmission gear 332 drives the escapement wheel 343.

[0029] Specifically, the intermediate gear 32 is larger than the first transmission gear 331b. Therefore, by integrating the two gears onto a single shaft, if the larger intermediate gear 32 drives the smaller first transmission gear 331b, the smaller gear will rotate at a higher speed than the larger gear, resulting in the first transmission gear 331 rotating at a lower speed than the intermediate gear 32. In short, by designing the tooth combination of the gear assembly, the overall transmission ratio of the entire system can be controlled, thereby precisely controlling the timing duration. Furthermore, the double gear assembly significantly reduces the space occupied by the transmission chain in both the axial and radial directions.

[0030] Specifically, such as Figure 3 As shown, the connecting plate 10 is rotatably hinged. The transmission rod assembly 20 includes two transmission rods and two universal joint shafts, as shown... Figure 3 As shown, it specifically includes a first transmission rod 201 and a second transmission rod 202, a first universal joint shaft 203 and a second universal joint shaft 204. The first universal joint shaft 203 is located below the hinge of the two connecting plates 10 of the feeding latching mechanism and is fixedly connected to one end of the first transmission rod 201. The first transmission rod 201 connects the first universal joint shaft 203 and the second universal joint shaft 204. The second transmission rod 202 connects the second universal joint shaft 204 and the first ratchet 36. When the feeding latching mechanism is unfolded, its connecting plate 10 rotates around the hinge side, and a downward pressure is manually applied to the feeding latching mechanism. This downward pressure is transmitted from the first universal joint shaft 203, through the first transmission rod 201, the second universal joint shaft 204 and the second transmission rod 202, to the first ratchet 36, and is converted into a unidirectional driving force of the first ratchet 36.

[0031] The single crystal furnace charging latch timing spring-back system also includes a special-shaped gear 35, which meshes with the main gear 31; a second ratchet 37, which is coaxially arranged with the special-shaped gear 35 and rotates synchronously; a first ratchet 36, which meshes with the second ratchet 37; and a spring mechanism 38. The power transmission path of its timing group is as follows: when the charging latch mechanism unfolds, the transmission rod assembly 20 presses down, applying pressure to the first ratchet 36, causing it to rotate unidirectionally. The first ratchet 36 meshes with and drives the second ratchet 37, which coaxially drives the special-shaped gear 35. The special-shaped gear 35 meshes with and drives the main gear 31 to rotate. During this process, the spring mechanism 38 is wound. The main gear 31 drives the intermediate gear 32 to rotate coaxially, which meshes with and drives the first transmission gear 331. The first transmission gear 331 coaxially drives the second transmission gear 332, which meshes with the escape wheel 343, thus starting the timing.

[0032] Optionally, the mainspring mechanism 38 includes a first mainspring 381 and a second mainspring 382 connected together, with the first mainspring 381 located below the main gear 31 and the second mainspring 382 located below the shaped gear 35.

[0033] Specifically, clockwise direction is defined as the first direction, and counterclockwise direction as the second direction. Assuming the first ratchet 36 rotates first in the first direction, the second ratchet 37, meshing with the first ratchet 36, rotates in the second direction. The non-circular gear 35, coaxial with the second ratchet 37, rotates in the second direction. The main gear 31, meshing with the non-circular gear 35, rotates in the first direction. The intermediate gear 32, coaxial with the main gear 31, rotates in the first direction. The first transmission gear 331, meshing with the intermediate gear 32, rotates in the second direction. The second transmission gear 332, coaxial with the first transmission gear 331, rotates in the second direction. The escape wheel 343, meshing with the second transmission gear 332, rotates in the first direction, thus starting the timing.

[0034] The single crystal furnace charging latch timed springback system also includes a springback mechanism, such as... Figure 2 The diagram shows a schematic of the springback structure of the timed springback system for the feeding buckle of a single crystal furnace. The springback mechanism includes a connecting rod assembly 39, which consists of a first connecting rod 391 and a second connecting rod 392. One end of the first connecting rod 391 and the second connecting rod 392 are respectively hinged to the connecting plate 10 of the feeding buckle, and the other ends of the first connecting rod 391 and the second connecting rod 392 are movably connected. A disc 40 is coaxially arranged with a second ratchet 37, and a notch 41 is provided on the edge of the disc 40. One end of a cam rod 42 is fixed to the bottom of the second ratchet 37, and the other end is in contact with the connecting rod assembly 39. When the timing ends, the disc 40 rotates until the notch 41 aligns with the cam rod 42, the cam rod 42 is inserted into the notch 41, the cam rod 42 strikes the connecting rod assembly 39, and the feeding buckle mechanism retracts.

[0035] Specifically, the hinge points of the first connecting rod 391 and the second connecting rod 392 with the connecting plate 10 are located on the bottom surface of the connecting plate 10, that is, on the side of the connecting plate 10 close to the connecting rod assembly 39, so that the connecting plate 10 of the feeding buckle can be fully closed when it is closed.

[0036] Specifically, the connecting rod assembly 39 further includes a first elastic device 393, the two ends of which are fixed to the first connecting rod 391 and the second connecting rod 392, respectively. Specifically, the first elastic device 393 includes a spring, and its two ends are fixed to the middle positions of the first connecting rod 391 and the second connecting rod 392, respectively. When the feeding latching mechanism is deployed, the included angle between the first connecting rod 391 and the second connecting rod 392 is 180°, meaning the first connecting rod 391 and the second connecting rod 392 are in a straight line state. The first elastic device 393 is stretched to its maximum deformation, storing elastic potential energy. When the cam rod 42 strikes the connecting rod assembly 39, the first connecting rod 391 and the second connecting rod 392 fold under the force, and the presence of the first elastic device 393 releases the elastic potential energy, assisting the first connecting rod 391 and the second connecting rod 392 to retract, thereby driving the connecting plate 10 of the feeding latching mechanism to close.

[0037] Specifically, the cam rod 42 is located on the connecting rod assembly 39 near the hinge of the connecting plate 10. This causes the hinge of the first connecting rod 391 and the second connecting rod 392 of the connecting rod assembly 39 to protrude in the direction of the opening of the feeding latch mechanism when the cam rod 42 strikes the connecting rod assembly 39.

[0038] Specifically, the disc 40 is made of alloy sheet with a thickness of 5-8 mm, and the diameter of the disc 40 is larger than the diameter of the second ratchet 37. Generally, the diameter of the disc 40 is 8-10 mm larger than the diameter of the second ratchet 37 to ensure that the cam rod 42 can be inserted into the notch 41 of the disc 40. Specifically, the size of the notch 41 is greater than or equal to the diameter of the cam rod 42.

[0039] Specifically, the initial position of notch 41 (in the untimed state) needs to be offset from the cam rod 42 by an angle to ensure that after the timing starts, the disk 40 needs to rotate by a corresponding angle to align notch 41 with the cam rod 42, so as to accurately match the set duration (e.g., 1 hour) of the timing set. Optionally, the initial position of notch 41 offset from the cam rod 42 by an angle between 20° and 120°.

[0040] When the timing mechanism enters the countdown phase, the disc 40 rotates at a stable angular velocity with the second ratchet 37, the angular velocity being controlled by the escapement mechanism 34. The outer surface of the disc 40 is always in contact with the cam rod 42. Under the pressure of the disc, the cam rod 42 continuously compresses the second elastic device 422, storing elastic potential energy. When the timing ends, the disc 40 rotates to the position where the notch 41 is directly opposite the cam rod 42. The cam rod 42 falls into the notch 41 of the disc 40, and the potential energy of the second elastic device 422 is released instantaneously, pushing the top of the cam rod 42 to strike the movable connection of the connecting rod assembly 39. At the same time, the remaining elastic force of the second elastic device 422 keeps the cam rod 42 in the notch 41 until the next time the latch unfolds. Then, the disc 40 rotates in the opposite direction (or resets with the second ratchet 37), and the disc 40 pushes the cam rod 42 out of the notch 41, completing one trigger cycle.

[0041] Optionally, multiple notches 41 can be provided on the outer periphery of the disc 40, and the distance between different notches 41 corresponds to different timing gears.

[0042] A positioning block 421 is provided below the second ratchet 37. A second elastic device 422 is also provided between the positioning block 421 and the cam rod 42. The end of the cam rod 42 is connected to the positioning block 421 through the second elastic device 422. Optionally, the positioning block 421 is fixed to the housing of the single crystal furnace feeding buckle timed rebound system, which is not shown in the figure.

[0043] The alarm control group of the single crystal furnace charging latch timer rebound system includes: a striking gear group 43 meshing with a second ratchet 37; a striking wheel 44 having at least one groove 441 on its edge; a striking hammer 45 having one end meshing with the striking gear group 43 and the other end corresponding to the groove 441 of the striking wheel 44; wherein, when the timing ends, the striking wheel 44 rotates until the groove 441 is aligned with the striking hammer 45, and the striking hammer 45 strikes and produces sound under the potential energy released by the spring mechanism 38.

[0044] Specifically, the striking gear assembly 43 includes a striking gear 431 and a third transmission gear 432. The striking gear 431 meshes with the striking hammer 45, and the third transmission gear 432 meshes with the second ratchet 37. The striking gear 431 and the third transmission gear 432 rotate coaxially.

[0045] Clockwise direction is defined as the first direction, and counterclockwise direction as the second direction. Assuming the first ratchet 36 rotates in the first direction, the second ratchet 37, meshing with the first ratchet 36, rotates in the second direction. The striking wheel 44, coaxial with the second ratchet 37, also rotates in the second direction. The third transmission gear 432, meshing with the second ratchet 37, rotates in the first direction, driving the striking gear 431 to rotate in the first direction. The striking hammer 45 rotates in the opposite direction to the striking wheel 44. After the timing ends, the groove 441 of the striking wheel 44 aligns with the striking hammer 45. The potential energy of the spring mechanism 38 drives the striking hammer 45 to swing and produce sound. The single crystal furnace feeding latch timed rebound system provides an audible warning, reminding on-site personnel that the feeding latch mechanism is automatically retracting.

[0046] Simultaneously, the second ratchet 37 drives the coaxial disc 40 to rotate. When the disc notch 41 rotates to the position of the cam rod 42, the second elastic device 422 pushes the cam rod 42 to spring up. The cam rod 42 strikes the connecting rod assembly 39, disrupting its balance. With the assistance of the first elastic device 393, the connecting rod assembly 39 quickly folds, driving the feeding latch mechanism to retract.

[0047] The single crystal furnace charging latch timed springback system also includes a springback mechanism and a reset assembly, such as... Figure 1 As shown, the reset assembly includes a reset button 46 and a reset connecting rod 47. The reset connecting rod 47 is connected to the reset button 46, and the two ends of the reset connecting rod 47 are respectively connected to the main gear 31 and the special gear 35. When the reset button 46 is manually pressed, the reset connecting rod 47 disengages the transmission connection between the striking wheel 44, the special gear 35, and the second ratchet 37. The potential energy stored in the spring mechanism 38 is released instantly, the striking wheel 44 and the special gear 35 spin freely, the cam rod 42 falls into the notch 41 of the disc 40, and the feeding buckle mechanism retracts.

[0048] Optionally, the single crystal furnace feeding buckle timing rebound system also includes a stop pin 48 and a blocking member 49. The stop pin 48 is located above the shaped gear 35 and is connected to the reset connecting rod 47. The blocking member 49 is located above the shaped gear 35, passes through the shaped gear 35 and is fixedly connected to the striking wheel 44 below.

[0049] When the operator applies force to the reset button 46, the reset connecting rod 47 undergoes axial displacement, causing the stop pin 48, which is fixedly connected to the reset connecting rod 47, to move downwards. The protrusion of the stop pin 48 applies axial pressure to the blocking member on the shaped gear 35, disengaging it from the linkage with the second ratchet 37. This disconnects the power transmission path from the mainspring mechanism 38 to the escapement mechanism 34. The upper end of the blocking member 49 remains relatively stationary with the stop pin 48, while its lower end is fixedly connected to the striking wheel 44, ensuring a rigid connection between the shaped gear 35 and the striking wheel 44, achieving synchronous rotation.

[0050] The shaped gear 35 disengages from the second ratchet 37, releasing the elastic potential energy stored in the spring mechanism 38. The second ratchet 37 drives the disc 40, the striking gear set 43, and the striking hammer 45 to rotate at high speed as a single unit, releasing the potential energy. On one hand, the interaction between the striking wheel 44 and the striking hammer 45 may trigger a warning bell; on the other hand, the second ratchet 37 drives the coaxial disc 40 to rotate rapidly, retracting the feeding latch mechanism and resetting it to a safe state.

[0051] Specifically, the core structural components of the feeding latch mechanism, linkage rod assembly, and timing execution mechanism are made of high-temperature alloys. Preferably, the high-temperature alloy is a nickel-based high-temperature alloy, selected from one or a combination of GH4169, GH4141, GH3030, and GH2132. More preferably, the nickel-based high-temperature alloy is GH4169. Optionally, for components with relatively low operating temperature requirements, 316 or 316L series high-performance stainless steel can also be used.

[0052] Optionally, assuming the escape wheel has 20 teeth, the escape mechanism 34 needs to complete 20 cycles to rotate once. Through multi-stage gear reduction: main gear 31 - intermediate gear 32 - first transmission gear 331 - second transmission gear 332 - escape wheel 343, the escape wheel 343 is slowly stepped, significantly reducing its speed before being transmitted to the main gear 31. If the oscillation period of the hairspring is designed to be 0.5 seconds / cycle, and the escape wheel 343 has 30 teeth, then it takes 0.5 seconds / cycle × 30 teeth = 15 seconds for the escape wheel 343 to rotate once. Further gear reduction ratios ensure that the main gear 31 takes 1 hour to rotate once. Thus, when the mainspring energy is released and the main gear has completed one rotation, the 1-hour timer ends, triggering the return mechanism.

[0053] The entire workflow of the single crystal furnace charging latch timed rebound system consists of three stages, as detailed below:

[0054] Phase 1: The feeding latch mechanism unfolds, and the alarm control group stores energy and stands ready.

[0055] When the feeding buckle is manually unfolded, the transmission rod assembly 20 presses down the first ratchet 36 (rotating in the first direction), driving the meshing second ratchet 37 (rotating in the second direction); the second ratchet 37 meshes and drives the third transmission gear 432 (rotating in the first direction), and the striking gear 431 rotates synchronously with the third transmission gear 432, thereby driving the striking hammer 45 (in the first direction) to approach the striking wheel 44; at this time, the striking wheel 44 rotates in the second direction with the second ratchet 37, and its outer surface abuts against the top of the striking hammer 45, preventing the striking hammer from continuing to swing, and the striking gear 431 continues to be under force, which drives the spring mechanism 38 to be further tightened through the transmission chain, specifically the second spring 382 is tightened, storing elastic potential energy, and the alarm control group enters the standby state.

[0056] Phase Two: When the timer ends, the alarm control group will sound.

[0057] When the timing set is completed (e.g., 1 hour), the escapement mechanism 34 (including the hairspring 341 and the escape fork 342) stops limiting the rotation speed of the second ratchet 37. The second ratchet 37 drives the striking wheel 44 to rotate rapidly until the groove 441 aligns with the top of the striking hammer 45. The mainspring mechanism 38, specifically the second mainspring 382, ​​releases elastic potential energy, which, through the transmission chain of the second ratchet 37, the third transmission gear 432, and the striking gear 431, drives the striking hammer 45 to swing rapidly in the second direction, forming a mechanical impact and triggering the alarm.

[0058] Phase 3: The feeding latch retracts, including manual reset and alarm control group reset standby.

[0059] Automatic rebound of the feeding buckle at a set time: After the buckle is retracted, the first ratchet 36 stops rotating, the second ratchet 37 gradually decreases in speed, the striking wheel 44 rotates with the second ratchet 37 to the groove 441 and disengages from the striking hammer 45, the striking hammer 45 is reset under the reverse drive of the striking gear 431, and the spring mechanism 38 returns to its initial state.

[0060] If the feeding buckle is manually reset: Press the reset button 46, the reset connecting rod 47 disconnects the transmission between the main gear 31 and the special gear 35, the potential energy of the spring mechanism 38 is released instantly, the second ratchet 37 spins rapidly, the striking wheel 44 rotates rapidly to disengage the groove 441 from the striking hammer 45, the striking hammer is reset, and the alarm stops ringing.

[0061] The single crystal furnace feeding latch timed return system provided by this system fundamentally solves the safety hazard caused by the feeding latch failing to retract due to human error or oversight during single crystal furnace production. After feeding is completed, the system automatically retracts the feeding latch to a safe position at the preset time without human intervention, avoiding the possibility of human error. Simultaneously with the return action, a warning signal is emitted via a mechanical alarm component, forming a double protection: whether the automatic timer ends or a manual reset is performed, the system ensures that the single crystal furnace feeding latch is in a retracted, safe state, preventing collisions between the latch and the growing crystal or other components.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A timed rebound system for a single crystal furnace charging latch, characterized in that, include: The feeding latching mechanism includes two connecting plates that can rotate relative to each other; The gear assembly includes a timing group, an alarm control group, and a spring mechanism; A transmission rod assembly, one end of which is connected to the feeding buckle mechanism, and the other end of which is linked to the gear assembly; When the feeding latch mechanism unfolds, the transmission rod assembly triggers the timing group to start timing; when the timing ends, the alarm control group triggers an alarm prompt, and at the same time, the rebound mechanism drives the feeding latch mechanism to automatically retract.

2. The single crystal furnace feeding buckle timed rebound system according to claim 1, characterized in that, The timing group includes: Main gear; The intermediate gear is coaxially arranged with the main gear and rotates synchronously; The transmission gear meshes with the intermediate gear; The escapement mechanism includes a hairspring, an escape fork, and an escape wheel; the escape wheel meshes with the transmission gear.

3. The single crystal furnace feeding buckle timed rebound system according to claim 2, characterized in that, Also includes: A non-standard gear meshes with the main gear; The second ratchet is coaxially arranged with the irregular gear and rotates synchronously. The first ratchet meshes with the second ratchet; Clockwork mechanism; When the feeding buckle mechanism is deployed, the transmission rod assembly applies pressure to the first ratchet to make it rotate in one direction, and then the second ratchet and the special gear drive the main gear to rotate and tighten the spring mechanism.

4. The single crystal furnace feeding buckle timed rebound system according to claim 3, characterized in that, The springback mechanism includes: The connecting rod assembly consists of a first connecting rod and a second connecting rod. One end of the first connecting rod and the second connecting rod are respectively hinged to the connecting plate of the feeding buckle, and the other ends of the first connecting rod and the second connecting rod are movably connected. A disc, coaxially arranged with the second ratchet, has at least one notch on its edge; The cam lever has one end fixed to the bottom of the second ratchet and the other end in contact with the connecting rod assembly; When the timing ends, the disc rotates until the notch aligns with the cam rod, the cam rod sinks into the notch, the cam rod strikes the connecting rod assembly, and the feeding buckle mechanism retracts.

5. The single crystal furnace feeding buckle timed rebound system according to claim 4, characterized in that, The connecting rod assembly further includes a first elastic device, the two ends of which are fixedly connected to the first connecting rod and the second connecting rod, respectively.

6. The single crystal furnace feeding buckle timed rebound system according to claim 3, characterized in that, The alarm control group includes: The gear set is struck, engaging with the second ratchet; The striking wheel should have at least one groove along its edge. The hammer has one end meshing with the striking gear set, and the other end corresponding to the groove of the striking wheel; When the timing ends, the striking wheel rotates until the groove aligns with the striking hammer, and the striking hammer strikes and produces sound under the potential energy released by the spring mechanism.

7. The single crystal furnace feeding buckle timed rebound system according to claim 6, characterized in that, The striking gear set includes: A striking gear, which meshes with the striking hammer; A third transmission gear, which meshes with the second ratchet; The striking gear rotates coaxially with the third transmission gear.

8. The single crystal furnace feeding buckle timed rebound system according to claim 7, characterized in that, It also includes the reset group; Reset button; A reset connecting rod is connected to the reset button, and the two ends of the reset connecting rod are respectively connected to the main gear and the special gear; When the reset button is pressed, the reset connecting rod disengages the transmission connection between the striking wheel, the shaped gear, and the second ratchet, releases the potential energy stored in the spring mechanism, causes the striking wheel and the shaped gear to idle, and retracts the feeding latch mechanism.

9. The single crystal furnace feeding buckle timed rebound system according to claim 8, characterized in that, Also includes: A stop pin is located above the irregular gear and is connected to the reset connecting rod; A blocking element is located above the shaped gear, passes through the shaped gear, and is fixedly connected to the striking wheel below.

10. The single crystal furnace feeding buckle timed rebound system according to claim 1, characterized in that, The feeding buckle mechanism, the gear assembly, and the transmission rod assembly are made of nickel-based alloy.

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