Connecting assembly and single crystal preparation device

Abstract

The utility model provides a connecting assembly and a single crystal preparation device. The connecting assembly comprises a resetting part, a positioning component and an opposite clamping part; a clamping space is formed between the opposite clamping parts; the two ends of the reset part are connected to the opposite clamping parts respectively. The positioning component comprises a connecting part, a positioning part and a movable part; the positioning part is arranged at one end, close to the heavy punch chuck, of the connecting part; the movable part is movably connected to the connecting part. No matter in the material hanging stage or the material taking stage, additional auxiliary parts are not needed, material hanging and material taking can be achieved through the clamping part, the reset part and the positioning component, and compared with an existing structure needing additional plug pins for connection, the material hanging and taking device is easy to operate, and the working efficiency can be improved to a certain degree. In addition, a climbing ladder is not needed, an operator can directly drive the positioning component on the ground, and in this way, compared with a structure needing a climbing ladder in the prior art, the device is safer and easy to operate.

Description

Technical Field

[0001] This application relates to the technical field of crystal preparation, and particularly to a connecting component and a single crystal preparation device. Background Art

[0002] When manufacturing single crystals, the mainstream manufacturing method is the Czochralski method (RCZ), that is, inserting a seed crystal into a single crystal furnace, slowly lifting the seed crystal, and pulling the seed crystal into a single crystal rod. During the process of manufacturing single crystals, it is necessary to add materials into the single crystal furnace multiple times.

[0003] Before adding materials into the single crystal furnace, technicians first need to separate components such as the weight body connected to the weight chuck from the weight chuck; when adding materials, install a feeder on the weight chuck, and pull the feeder connected to the other end of the weight chuck into the single crystal furnace by lifting the weight pulling rope at one end of the weight chuck to complete the material addition. After completing the material addition, pull out the feeder from the single crystal furnace, remove the feeder from the weight chuck, reinstall components such as the weight body onto the weight chuck, and perform the next crystal pulling operation.

[0004] Specifically, as shown in Figure 1 and Figure 2 , the feeder 1' has a lifting rod 2' inside, and a hanging ring 3' is fixedly connected to the top end of the lifting rod 2'; a hanging member 4' is connected to the bottom end of the weight chuck. When adding materials, technicians need to manually connect the hanging ring 3' to the hanging member 4' with a pin 5', and then lift the weight chuck; after completing the material addition, technicians need to manually pull out the pin 5' and remove the hanging ring 3' from the hanging member.

[0005] However, when using the above-mentioned existing structure for material addition, it is necessary for workers to climb a ladder manually and perform the operation of hanging materials (hanging the hanging ring on the hanging member), and again need to rely on the ladder and manually remove the materials (separate the hanging ring from the hanging member) after adding materials; in this way, the operation is relatively cumbersome and the operation work efficiency is low.

[0006] Therefore, there is an urgent need for a connecting component and a single crystal preparation device to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0007] The purpose of this application is to provide a connecting component and a single crystal preparation device, which can simplify the operation steps and improve the work efficiency to a certain extent.

[0008] This application provides a connecting component for use in a single crystal preparation device, which can hang or separate the lifting rod in the feeder from the weight chuck; the connecting component includes a reset portion, a positioning member, and opposing clamping portions;

[0009] At least one first end of the opposed clamping portions is rotatably connected to the weight chuck, and a clamping space with a preset size is formed between the second ends of the opposed clamping portions away from the weight chuck;

[0010] Both ends of the reset portion are respectively connected to the opposed clamping portions. When the size of the clamping space is greater than the preset size, the reset portion can drive the clamping portions to reset, so that the size of the clamping space is reset to the preset size;

[0011] The positioning member is arranged on the lifting rod. The positioning member includes a connecting portion, a positioning portion and a movable portion; the positioning portion is arranged at one end of the connecting portion close to the weight chuck, and the positioning portion has an expanding structure from the direction of the weight chuck to the feeder; the movable portion is movably connected to the connecting portion, the movable portion has a shrinking structure from the direction of the weight chuck to the feeder, and the end face size of the movable portion close to the positioning portion is greater than or equal to the end face size of the positioning portion close to the movable portion;

[0012] Driving the positioning member to move towards the clamping portion, the clamping portion can clamp the positioning portion in the clamping space, so that the lifting rod in the feeder is hooked on the weight chuck; continuing to drive the positioning member to move towards the clamping portion, the movable portion can move into the clamping space and engage with the positioning portion. When driving the positioning member to move away from the clamping portion, the positioning member and the clamping portion can be separated, so that the lifting rod in the feeder is separated from the weight chuck.

[0013] In the above technical solution, further, the clamping portion is a clamping arm. There are two clamping arms, and the two clamping arms are arranged oppositely along the radial direction of the lifting rod. The clamping arms arranged oppositely along the radial direction of the lifting rod are bent with hooks towards the opposite side at the second end away from the weight chuck;

[0014] A clamping space with the preset size is formed between the opposed hooks.

[0015] In the above technical solution, further, the reset portion includes a positioning pin and a reset spring;

[0016] The positioning pin passes through the clamping arm along the radial direction perpendicular to the lifting rod;

[0017] Both ends of the reset spring are respectively hooked on the positioning pins on the opposed clamping arms;

[0018] When the size of the clamping space is greater than the preset size, the reset spring can reset the size of the clamping space to the preset size.

[0019] In the above technical solution, further, the positioning member includes a connecting rod that can serve as the connecting portion, a positioning frustum that can serve as the positioning portion, and a movable frustum that can serve as the movable portion;

[0020] The connecting rod is fixedly arranged on the lifting rod, the positioning frustum is arranged at one end of the connecting rod close to the weight chuck, and the movable frustum is movably connected to the connecting rod.

[0021] In the above technical solution, further, a positioning groove is formed on the end face of the positioning frustum facing the movable frustum;

[0022] The positioning groove is circular, and the diameter of the positioning groove is equal to the distance between the relatively arranged hooks.

[0023] In the above technical solution, further, the positioning frustum and the movable frustum have the same size, so that the movable frustum and the positioning frustum are symmetrically arranged.

[0024] In the above technical solution, further, the clamping arm is connected to the weight chuck through a hanging member;

[0025] The hanging member includes a hanging part, lug ears, and a bolt;

[0026] There are two lug ears, and the two lug ears are arranged at intervals on one side of the hanging part close to the clamping arm;

[0027] The clamping arm is rotatably connected between the two lug ears through a bolt.

[0028] In the above technical solution, further, the connection assembly further includes a protective cover;

[0029] The opposed clamping arms together form a first end face and a second end face; the protective cover is respectively buckled on the first end face and the second end face;

[0030] The protective cover includes a straight tube portion and an expansion portion communicated with the straight tube portion; the expansion portion is close to the lifting rod and the expansion portion has a tapered structure from the lifting rod to the direction of the weight chuck.

[0031] In the above technical solution, further, the hanging part and the weight chuck are connected by threads.

[0032] This application also provides a single crystal preparation device, including the above connection assembly.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] The present application provides a connection component for a single crystal preparation device, which can hang or separate a lifting rod in a feeder from a weight chuck; the connection component includes a reset portion, a positioning member, and opposed clamping portions;

[0035] The first end of at least one of the opposed clamping portions is rotatably connected to the weight chuck, and a clamping space with a preset size is formed between the second ends of the opposed clamping portions away from the weight chuck;

[0036] Both ends of the reset portion are respectively connected to the opposed clamping portions. When the size of the clamping space is greater than the preset size, the reset portion can drive the clamping portions to reset, so that the size of the clamping space is reset to the preset size;

[0037] The positioning member is arranged on the lifting rod, and the positioning member includes a connecting portion, a positioning portion, and a movable portion; the positioning portion is arranged at one end of the connecting portion close to the weight chuck, and the positioning portion has a gradually expanding structure in the direction from the weight chuck to the feeder; the movable portion is movably connected to the connecting portion, the movable portion has a gradually shrinking structure in the direction from the weight chuck to the feeder, and the end face size of the movable portion close to the positioning portion is greater than or equal to the end face size of the positioning portion close to the movable portion;

[0038] Driving the positioning member to move towards the clamping portion, the clamping portion can clamp the positioning portion in the clamping space, so that the lifting rod in the feeder is hung on the weight chuck; continuously driving the positioning member to move towards the clamping portion, the movable portion can move into the clamping space and engage with the positioning portion. When driving the positioning member to move away from the clamping portion, the positioning member and the clamping portion can be separated, so that the lifting rod in the feeder is separated from the weight chuck.

[0039] In summary, in the present application, whether in the material hanging or material taking stage, no additional auxiliary parts are required. The material hanging and material taking can be realized by using the clamping portion, the reset portion, and the positioning member. Compared with the existing structure that requires additional pins for connection, the operation of the present application is simple and can improve the work efficiency to a certain extent. In addition, the present application does not need to rely on a climbing ladder. The operator can directly drive the positioning member standing on the ground. In this regard, compared with the structure that requires a climbing ladder in the prior art, the present application is safer and the operation is simple.

[0040] The present application also provides a single crystal preparation device, including the above-mentioned connection component. Therefore, it has all the beneficial effects of the above-mentioned connection component, and no specific description will be made here. Description of the Drawings

[0041] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a schematic structural diagram of a feeder and a connection component in the prior art;

[0043] Figure 2 It is Figure 1 an enlarged view of part A in

[0044] Figure 3 It is a schematic structural diagram of the feeder and the connection component (hiding the reset part) in the present application;

[0045] Figure 4 It is Figure 3 a schematic structural diagram of hiding part of the protective cover in

[0046] Figure 5 It is Figure 4 an enlarged view of part B in

[0047] Figure 6 It is a schematic structural diagram of the connection component in the present application;

[0048] Figure 7 It is a schematic structural diagram of the connection component in the present application, hiding the reset part and part of the protective cover and viewed from the first perspective;

[0049] Figure 8 It is a schematic structural diagram of the connection component in the present application, hiding the reset part and part of the protective cover and viewed from the second perspective;

[0050] Figure 9 It is a schematic structural diagram of the connection component in the present application, hiding the reset part and part of the protective cover and viewed from the third perspective;

[0051] Figure 10 It is a schematic structural diagram of the connection component in the present application, hiding the reset part and part of the protective cover and viewed from the fourth perspective.

[0052] Reference Signs: 1'-feeder; 2'-lifting rod; 3'-lifting ring; 4'-hanging member; 5'-pin; 1-feeder; 2-lifting rod; 4-positioning member; 5-clamping part; 6-clamping space; 7-connecting part; 8-positioning part; 9-movable part; 10-first clamping arm; 11-second clamping arm; 12-hook; 14-reset spring; 15-connecting rod; 16-positioning frustum; 17-movable frustum; 18-positioning groove; 19-hanging member; 20-lug; 21-bolt; 22-protective cover; 23-straight cylinder part; 24-expansion part; 25-connection assembly; 26-hanging member. Detailed Implementation Manner

[0053] The following detailed implementation manners are provided to help readers obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of this application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be obvious. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein. Rather, changes that will be obvious after understanding the disclosure of this application can be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

[0054] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be obvious after understanding the disclosure of this application.

[0055] Throughout the specification, when an element (such as a layer, region, or substrate) is described as "on" another element, "connected to" another element, "bonded to" another element, "above" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "above" another element, or "covering" another element, or there may be one or more other elements therebetween. In contrast, when an element is described as "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly above" another element, or "directly covering" another element, there may be no other elements therebetween.

[0056] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0057] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or sections, these components, elements, regions, layers, or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or section from another. Thus, the first component, element, region, layer, or section as referred to in the examples described herein may also be referred to as the second component, element, region, layer, or section without departing from the teachings of the examples.

[0058] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientation of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0059] The terms used herein are only for describing various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" list the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0060] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the figures may occur. Thus, the examples described herein are not limited to the specific shapes shown in the figures, but include changes in shape that occur during manufacturing.

[0061] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0062] Example 1

[0063] The following is combined with Figures 3 - 10 to describe in detail a connection component 25 provided by the present application.

[0064] The present application provides a connection component 25, which is used in a single crystal preparation device. Specifically, it is used in the multi-feeding process during the crystal pulling process of the single crystal preparation device. By using this connection component 25, the lifting rod 2 in the feeder 1 can be hooked to the weight chuck, thereby realizing the traction of the feeder 1 to the auxiliary chamber to complete the feeding. In addition, this connection component 25 can also separate the feeder 1 from the weight chuck to realize the evacuation of the feeder 1 after the feeding is completed. The whole process is simple to operate and improves the work efficiency to a certain extent. Next, a connection component 25 provided by the present application will be specifically described.

[0065] Combined with Figures 2 - 5 As shown, the connection component 25 includes a reset portion, a positioning member 4, and opposing clamping portions 5.

[0066] Specifically, there are two clamping portions 5, and the two clamping portions 5 are symmetrically arranged along the radial direction of the lifting rod 2. At least one first end of the two clamping portions 5 is rotatably connected to the weight chuck, that is, at least one first end of the two clamping portions 5 is movably connected to the weight chuck. Preferably, the first ends of the two clamping portions 5 are both rotatably connected to the weight chuck. A clamping space 6 with a preset size is formed between the second ends of the two opposing clamping portions 5 away from the weight chuck.

[0067] Specifically, combined with Figure 6 As shown, both ends of the reset portion are respectively connected to the opposing clamping portions 5. When the size of the clamping space 6 is greater than the preset size, the reset portion can drive the first end of the clamping portion 5 to rotate, so that the clamping portion 5 is reset, thereby making the size of the clamping space 6 reset to the preset size.

[0068] Specifically, combined with Figure 5 As shown, the positioning member 4 is arranged on the lifting rod 2. The positioning member 4 includes a connecting portion 7, a positioning portion 8, and a movable portion 9. The positioning portion 8 is arranged at one end of the connecting portion 7 close to the weight chuck. Combined with Figure 5 As shown, the positioning portion 8 is arranged at the top end of the connecting portion 7. In addition, combined with Figure 5 As shown, the positioning portion 8 has an increasingly expanding structure in the direction from the weight chuck to the feeder 1 (that is, along the vertically downward direction). Combined with Figure 5 As shown, the movable portion 9 is movably connected to the connecting portion 7, that is, the movable portion 9 can move along the axis direction of the connecting portion 7 on the connecting portion 7. In addition, combined with Figure 5As shown, the movable part 9 has a tapered structure in the direction from the weight chuck to the feeder 1 (i.e., along the vertically upward direction), and the end face size of the movable part 9 close to the positioning part 8 is greater than or equal to the end face size of the positioning part 8 close to the movable part 9; it should be noted that: when the end face size of the movable part 9 close to the positioning part 8 is equal to the end face size of the positioning part 8 close to the movable part 9, when the movable part 9 is moved on the connecting part 7, the positioning part 8 and the movable part 9 can be seamlessly butted. When the end face size of the movable part 9 close to the positioning part 8 is greater than the end face size of the positioning part 8 close to the movable part 9, when the movable part 9 is moved on the connecting part 7, the positioning part 8 and the movable part 9 can be directly butted, and in this kind of butt joint, the movable part 9 protrudes from the positioning part 8.

[0069] In the actual use process, the process of hanging the material (hanging the feeder 1 on the weight joint) is as follows: First, move the movable part 9 on the connecting part 7 so that the movable part 9 and the positioning part 8 are arranged at intervals, that is, a gap is formed between the movable part 9 and the positioning part 8; then drive the positioning member 4 to move towards the clamping part 5, that is, drive the positioning member 4 to move in the vertically upward direction. At this time, the positioning part 8 first reaches the clamping space 6, and then continue to drive the positioning member 4 to move in the vertically upward direction. At this time, the positioning part 8 will slowly push open the clamping part 5 (at this time, one end of the clamping part 5 close to the weight chuck rotates, so that the clamping part 5 moves in the opposite direction). When the positioning part 8 completely passes through the clamping space 6, the reset part will drive the clamping part 5 to reset. Under the action of the reset part, the clamping part 5 will be clamped at the bottom of the positioning part 8, thereby realizing hanging the lifting rod 2 on the weight chuck, that is, completing the material hanging operation at this time.

[0070] The process of taking the material (removing the feeder 1 from the weight joint) is as follows: When the feeding is completed, it is necessary to remove the feeder 1 from the weight chuck. At this time, continue to drive the positioning member 4 to move towards the clamping part 5, that is, make the movable part 9 pass through the clamping space 6; then pull the connecting part 7 vertically downward. At this time, under the action of gravity and the limit of the clamping part 5, the movable part 9 can make the interactive part and the positioning part 8 snap together; finally, quickly and with a large force pull the connecting part 7 vertically downward. Since the movable part 9 is tapered in the direction from the weight chuck to the feeder 1, the connecting part 7, the movable part 9 and the positioning part 8 will be separated from the clamping part 5 at the same time.

[0071] It should be noted that: the bottom surface size of the positioning part 8 is greater than the size of the clamping space 6. Specifically, the bottom surface of the positioning part 8 is circular, then the bottom surface size refers to the diameter, and the size of the clamping space 6 refers to the distance between the opposing clamping parts 5, that is, when the positioning part 8 completely passes through the clamping space 6, the clamping part 5 resets the clamping space 6 under the action of the reset part, thereby making the clamping part 5 clamp at the bottom of the positioning part 8.

[0072] In summary, whether in the stage of hanging materials or taking materials, this application does not require additional auxiliary parts. The hanging and taking of materials can be achieved by using the clamping part 5, the reset part, and the positioning member 4. Compared with the existing structure that requires additional pins for connection, the operation of this application is simple and can improve work efficiency to a certain extent. In addition, this application does not need to rely on a climbing ladder. The operator can directly drive the positioning member 4 while standing on the ground. In this regard, compared with the structure that requires a climbing ladder in the prior art, this application is safer and has a simple operation.

[0073] In this embodiment, further, in combination with Figure 5 As shown, the clamping part 5 is a clamping arm, and there are two clamping arms, namely the first clamping arm 10 and the second clamping arm 11 respectively; the first clamping arm 10 and the second clamping arm 11 are arranged oppositely along the radial direction of the lifting rod 2, and the first clamping arm 10 and the second clamping arm 11 are bent towards the opposite side at the second end away from the weight chuck to form hooks 12; a clamping space 6 with a preset size is formed between the opposite hooks 12.

[0074] Further, one end of the first clamping arm 10 and the second clamping arm 11 close to the weight chuck is rotatable. When the positioning part 8 passes through the clamping space 6, since the bottom surface size of the positioning part 8 is larger than the size of the clamping space 6, the clamping space 6 will change accordingly.

[0075] In this embodiment, further, in combination with Figure 6 As shown, the reset part includes a positioning pin and a reset spring 14.

[0076] Specifically, the positioning pin passes through the first clamping arm 10 and the second clamping arm 11 respectively along the radial direction perpendicular to the lifting rod 2.

[0077] Specifically, the first end of the reset spring 14 is hooked to the positioning pin of the first clamping arm 10, and the other end is hooked to the positioning pin of the second clamping arm 11.

[0078] In the actual use process, when the positioning part 8 passes through the clamping space 6, since the bottom surface size is larger than the size of the clamping space 6, the size of the clamping space 6 will be larger than the preset size; when the positioning part 8 completely passes through the clamping space 6, the reset spring 14 resets and can pull the first clamping arm 10 and the second clamping arm 11 to move towards the opposite side, so that the size of the clamping space 6 is reset to the preset size. At this time, the positioning part 8 can be clamped by the hooks 12.

[0079] In this embodiment, further, in combination with Figure 7 As shown, the positioning member 4 includes a connecting rod 15 that can serve as the connecting part 7, a positioning frustum 16 that can serve as the positioning part 8, and a movable frustum 17 that can serve as the movable part 9.

[0080] Specifically, the connecting rod 15 is fixedly arranged on the lifting rod 2. Preferably, the connecting rod 15 is welded to the lifting rod 2. The positioning frustum 16 is arranged at one end of the connecting rod 15 close to the weight chuck, and the movable frustum 17 is movably connected to the connecting rod 15.

[0081] Further, as shown in Figure 7 the positioning frustum 16 and the movable frustum 17 have the same size, so that the movable frustum 17 and the positioning frustum 16 are symmetrically arranged. That is to say, when the movable part 9 passes through the clamping space 6, the movable part 9 and the positioning part 8 will be completely butted together.

[0082] In this embodiment, further, as shown in Figure 8 a positioning groove 18 is formed on the end face of the positioning frustum 16 facing the movable frustum 17; the positioning groove 18 is circular, and the diameter of the positioning groove 18 is equal to the distance between the relatively arranged hooks 12. That is, after the positioning part 8 passes through the clamping space 6, the hooks 12 can be directly clamped in the positioning groove 18, which can realize the stable clamping of the positioning part 8 and can prevent the clamping failure caused by shaking to a certain extent.

[0083] In this embodiment, further, as shown in Figure 5 and Figure 9 as well as Figure 10 the clamping arm is connected to the weight chuck through a hanging member 26.

[0084] Specifically, the hanging member 26 includes a hanging part 19, lug ears 20 and a bolt 21; there are two lug ears 20, and the two lug ears 20 are arranged at intervals on the side of the hanging part 19 close to the clamping arm.

[0085] Specifically, the clamping arm is rotatably connected between the two lug ears 20 through the bolt 21.

[0086] Preferably, the hanging part 19 and the weight chuck are connected by threads.

[0087] In this embodiment, further, as shown in Figure 6 the connecting assembly 25 further includes a protective cover 22.

[0088] Specifically, the opposing clamping arms together form a first end face and a second end face; the protective cover 22 is respectively buckled on the first end face and the second end face.

[0089] Further, the protective cover 22 includes a straight cylinder part 23 and an expansion part 24 communicated with the straight cylinder part 23; the expansion part 24 is close to the lifting rod 2 and the expansion part 24 is in a tapered structure from the lifting rod 2 to the direction of the weight chuck. The tapered expansion part 24 facilitates the operator to observe the movement of the positioning member 4.

[0090] Further, one end of the straight tube portion 23 facing away from the expansion portion 24 is connected to the bottom wall of the hanging member 19.

[0091] Combined Figure 6 As shown, the straight tube portion 23 is in a semi-cylindrical shape. The two straight tube portions 23 are respectively buckled on the first end face and the second end face, that is, the two straight tube portions 23 can be butted into a quasi-cylindrical shape. Note that the two straight tube portions 23 are not directly sealed and butted because a rotating space needs to be reserved for the rotation of the clamping arm.

[0092] In summary, the protective cover 22 can prevent dust or some metal impurities from contacting the positioning member 4 to a certain extent. Once contacting the positioning member 4, during the process of feeding or taking materials through the positioning member 4, dust will enter the feeder 1 due to operations such as vibration and pulling, thereby affecting the quality of the materials.

[0093] Embodiment 2

[0094] In this embodiment, a single crystal preparation device is further provided, including the above-mentioned connection assembly, so it has all the beneficial effects of the above-mentioned connection assembly, and will not be specifically described here.

[0095] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connecting assembly, used in a single crystal preparation device, capable of hooking or separating a lifting rod in a feeder to or from a heavy hammer chuck; characterized in that: The connecting assembly includes a resetting portion, a positioning member and an opposing clamping portion; A first end of at least one of the opposing clamping parts is rotatably connected to the weight chuck, and a clamping space with a preset size is formed between second ends of the opposing clamping parts away from the weight chuck; The two ends of the reset portion are respectively connected to the opposite clamping portions, and when the size of the clamping space is larger than the preset size, the reset portion can drive the clamping portion to reset so that the size of the clamping space is reset to the preset size; The positioning member is arranged on the lifting rod, and the positioning member includes a connecting portion, a positioning portion and a movable portion; the positioning portion is arranged at one end of the connecting portion close to the weight chuck, and the positioning portion is in a gradually expanding structure from the weight chuck to the feeder; the movable portion is movably connected to the connecting portion, and the movable portion is in a gradually contracting structure from the weight chuck to the feeder, and the end face size of the movable portion close to the positioning portion is greater than or equal to the end face size of the positioning portion close to the movable portion; Driving the positioning member to move toward the clamping portion, the clamping portion can clamp the positioning portion in the clamping space, so that the lifting rod in the feeder is hooked to the weight chuck; Continue to drive the positioning member to move toward the clamping portion, the movable portion can move to the clamping space and engage with the positioning portion, and when the positioning member is driven to move away from the clamping portion, the positioning member and the clamping portion can be separated to separate the lifting rod in the feeder from the heavy hammer chuck.

2. The connection assembly according to claim 1, characterized in that: The clamping part is a clamping arm, and two clamping arms are provided. The two clamping arms are arranged opposite to each other along the radial direction of the lifting rod, and the clamping arms opposite to each other along the radial direction of the lifting rod are bent with hooks at the second ends away from the weight chuck toward the opposite side; The clamping space with the preset size is formed between the opposite hooks.

3. The connection assembly according to claim 2, characterized in that: The reset part includes a positioning pin and a reset spring; The positioning pin passes through the clamping arm along a radial direction perpendicular to the lifting rod; The two ends of the return spring are respectively connected to the positioning pins on the opposite clamping arms; When the size of the clamping space is larger than the preset size, the return spring can return the size of the clamping space to the preset size.

4. The connection assembly according to claim 2, characterized in that: The positioning member includes a connecting rod that can serve as the connecting portion, a positioning truncated table that can serve as the positioning portion, and a movable truncated table that can serve as the movable portion; The connecting rod is fixedly arranged on the lifting rod, the positioning truncated table is arranged on one end of the connecting rod close to the weight chuck, and the movable truncated table is movably connected to the connecting rod.

5. The connection assembly according to claim 4, characterized in that: The end surface of the positioning truncated table facing the movable truncated table is provided with a positioning groove; The positioning groove is circular, and the diameter of the positioning groove is equal to the distance between the oppositely arranged hooks.

6. The connection assembly according to claim 4, characterized in that: The positioning truncated table has the same size as the movable truncated table, so that the movable truncated table and the positioning truncated table are symmetrically arranged.

7. The connection assembly according to claim 2, characterized in that: The clamping arm is connected to the weight chuck through a hanging member; The hanging component includes a hanging piece, a lug and a bolt; The lugs are provided with two, and the two lugs are spaced apart and arranged on a side of the hanger close to the clamping arm; The clamping arm is rotatably connected between the two lugs through a bolt.

8. The connection assembly according to claim 7, characterized in that: The connection assembly also includes a protective cover; The opposing clamping arms jointly form a first end surface and a second end surface; the protective cover is buckled on the first end surface and the second end surface respectively; The protective cover comprises a straight tube portion and an expansion portion communicated with the straight tube portion; the expansion portion is close to the lifting rod and the expansion portion is a gradually contracting structure in a direction from the lifting rod to the heavy hammer chuck.

9. The connection assembly according to claim 7, characterized in that: The hanging piece and the heavy hammer chuck are connected by threads.

10. A single crystal preparation device, characterized in that: The invention comprises the connection assembly as described in any one of claims 1 to 9.

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