Clamping mechanism and microelectrode drawing instrument

Abstract

The invention provides a clamping mechanism and a microelectrode drawing instrument, the clamping mechanism comprises a base and two clamping parts, the base is provided with a positioning structure extending along a preset direction, and the two clamping parts are arranged on the base at intervals along the preset direction and respectively abut against the positioning structure, so that the two clamping parts are aligned along the preset direction. Through the mode, the clamping parts, clamping the two ends of the object to be drawn, of the clamping mechanism can be conveniently adjusted to be in an aligned state, and the two clamping parts can be reliably and stably maintained in the aligned state.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment, particularly to a clamping mechanism and a microelectrode puller. Background Art

[0002] A pulling device is a device that can pull a glass tube or other objects to be pulled, causing at least part of the object to be pulled to become thinner.

[0003] In a pulling device, the clamping mechanism for clamping the object to be pulled is an important component. In order to make the deformation of the object to be pulled as uniform as possible during the pulling process, the mechanisms for clamping both ends of the object to be pulled by the clamping mechanism need to be aligned as much as possible. However, in existing microelectrode pullers, it often takes a lot of time to adjust the mechanisms for clamping both ends of the object to be pulled into an aligned state. Summary of the Invention

[0004] The present application provides a clamping mechanism and a microelectrode puller, which can conveniently adjust the clamping parts for clamping both ends of the object to be pulled by the clamping mechanism to an aligned state, and can reliably and stably maintain the two clamping parts in an aligned state.

[0005] On the one hand, the present application provides a clamping mechanism, which includes a base and two clamping parts. The base has a positioning structure extending along a preset direction, and the two clamping parts are arranged on the base at intervals along the preset direction and respectively abut against the positioning structure so that the two clamping parts are aligned along the preset direction.

[0006] In the present application, a positioning structure is formed on the base, and the two clamping parts simultaneously abut against the positioning structure to be uniformly positioned by the positioning structure. Therefore, the two clamping parts can be aligned by using the positioning structure quickly and conveniently.

[0007] In some embodiments, the positioning structure includes a first positioning plane and a second positioning plane, the first positioning plane and the second positioning plane are not parallel, and the two clamping parts simultaneously abut against the first positioning plane and the second positioning plane.

[0008] In some embodiments, a positioning groove is formed on the base, one side wall of the positioning groove forms the first positioning plane, and the bottom wall of the positioning groove forms the second positioning plane; alternatively, a positioning step is formed on the base, the side wall of the positioning step forms the first positioning plane, and the wall surface connected to the side wall of the positioning step forms the second positioning plane.

[0009] In some embodiments, the two clamping parts respectively include a mounting seat, a clamping assembly and a slider assembly, the slider assembly includes a guide rail fixed to the mounting seat and a slider fixed to the clamping assembly, the slider can move along the guide rail so that the clamping assembly can move relative to the mounting seat, the mounting seat has a slider assembly positioning surface, the slider assembly is positioned by the slider assembly positioning surface, the slider assembly has a clamping assembly positioning surface, the clamping assembly is positioned by the clamping assembly positioning surface, and the extension direction of the slider assembly positioning surface and the clamping assembly positioning surface is the same as the preset direction.

[0010] In some embodiments, the clamping assembly includes a support plate, a pressure plate and a locking assembly. The pressure plate and the support plate are arranged relative to each other. The locking assembly is arranged on the support plate and can be switched between a locked state and a released state. The locking assembly drives the pressure plate to move toward the support plate during the process of switching from the released state to the locked state.

[0011] In some embodiments, the support plate is provided with a fixing groove, and the first mounting surface of the pressure plate facing the base is provided with an elastic pad opposite to the fixing groove, the pressure plate is provided with a mounting hole, the elastic pad includes a main body and a connecting part, the connecting part is inserted and fixed in the mounting hole, and the main body is provided on the first mounting surface.

[0012] In some embodiments, the connecting portion has an inverted structure, and the mounting hole includes a first hole segment and a second hole segment. The first hole segment is closer to the first mounting surface. A limited position surface is formed between the first hole segment and the second hole segment. The limited position surface faces the side away from the first mounting surface and is used to limit the inverted structure from entering the first hole segment after the inverted structure is set in the second hole segment.

[0013] In some embodiments, the first mounting surface of the pressure plate is further provided with an auxiliary elastic pad, and the auxiliary elastic pad is spaced apart from the elastic pad and staggered with the fixing groove.

[0014] In some embodiments, the locking assembly further includes a step screw passing through the support plate and the pressure plate and an elastic reset member, and the elastic reset member is disposed between the pressure plate and the support plate.

[0015] In some embodiments, the mounting seat is provided with a limiting spring sheet, a limiting groove is provided on one side of the clamping assembly facing the mounting seat, and the limiting spring sheet is configured to be embedded in the limiting groove to limit the movement of the clamping assembly when the clamping assembly moves to a preset position.

[0016] In some embodiments, the clamping portion further includes a spring reset assembly disposed on the clamping portion, and the spring reset assembly is used to drive the limiting spring embedded in the limiting groove to leave the limiting groove.

[0017] In some embodiments, the shrapnel reset assembly includes a button and an elastic member. The clamping assembly is provided with a through hole. The button is movably inserted into the through hole. The button has a touch end and an abutting end. The abutting end is used to extend out of the through hole and abut against the limiting shrapnel when the touch end is pressed, so as to drive the limiting shrapnel away from the limiting groove. The elastic member is arranged between the touch end and the clamping assembly and is used to push the button to reset after the pressing action on the touch end is withdrawn. Wherein, the outer diameter of the touch end is larger than that of the abutting end. At least part of the end face of the touch end facing the abutting end is recessed away from the abutting end to form an elastic member receiving groove. One end of the elastic member abuts against the clamping assembly, and the other end abuts against the bottom wall of the elastic member receiving groove.

[0018] On the other hand, the present application provides a microelectrode puller, which includes: a clamping mechanism, a heating assembly and a processor. The clamping mechanism is used to clamp both ends of the object to be pulled. The heating assembly is arranged between the two clamping parts of the clamping mechanism and is used to heat a part of the object to be pulled. The processor is coupled to the clamping mechanism and the heating assembly to control the heating assembly to heat the object to be pulled and control the two clamping mechanisms to pull the object to be pulled during the process of the heating assembly heating the object to be pulled. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a microelectrode puller according to one or more embodiments; Figure 2 is an exploded structural diagram of a clamping part according to one or more embodiments; Figure 3 is a cross-sectional schematic diagram of a clamping part according to one or more embodiments; Figure 4 is an exploded structural diagram of a locking assembly and a pressing plate assembly according to one or more embodiments; Figure 5 is a schematic diagram of a locking assembly in a released state according to one or more embodiments; Figure 6 is a schematic diagram of a locking assembly in a locked state according to one or more embodiments; Figure 7 is a cross-sectional schematic diagram of a fixed groove according to one or more embodiments; Figure 8 is a cross-sectional structural diagram of an elastic cushion block and a pressing plate according to one or more embodiments; Figure 9 is an assembly schematic diagram of an elastic cushion block and a pressing plate according to one or more embodiments; Figure 10 is an exploded structural diagram of a shrapnel reset assembly according to one or more embodiments; Figure 11is a schematic diagram of the structure of a limit groove according to one or more embodiments; Figure 12 The figure is a schematic diagram of the working principle of the limiting spring piece and the spring piece reset assembly according to one or more embodiments.

[0020] Description of reference numerals: Microelectrode pulling apparatus 1; clamping mechanism 10; heating component 20; Clamping portion 11; mounting seat 12; slider assembly positioning surface 121; limiting spring piece 122; anti-collision block 123; clamping assembly 13; Support plate 131; fixing groove 1310; operating groove 1311; limiting groove 1312; through hole 1313; stepped hole 1314; The pressing plate 132; the first mounting surface 1320; the elastic pad 1321; the main body 1322; the connecting portion 1323; the undercut structure 1323a; the neck 1323b; the auxiliary elastic pad 1324; the mounting hole 1325; the first hole section 1325a; the second hole section 1325b; the guide hole section 1325c; Locking assembly 133; screw 1331; locking knob 1332; step screw 1333; elastic reset member 1334; Shrapnel reset assembly 134; button 1341; touch end 1341a; abutment end 1341b; end surface 1341c; elastic member limiting groove 1341d; elastic member 1342; locking member 1343; Slider assembly 14; guide rail 141; slider 142; clamping assembly positioning surface 143; Base 15; positioning structure 150; first positioning plane 1501; second positioning plane 1502; positioning groove 151. Implementation

[0021] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0023] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0024] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0026] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0027] A drawing device is a device that can draw objects to be drawn, such as glass tubes, and make at least part of the object to be drawn stretched and thinned. Therefore, a microelectrode puller usually has two clamping parts arranged at intervals to clamp both ends of the object to be drawn respectively. During the drawing process, the two clamping parts need to move away from each other relatively. Whether the two clamping parts are aligned has a great impact on the drawing quality. If the two clamping parts deviate too much, the object to be drawn cannot deform uniformly during the drawing process. A microelectrode puller is a precision drawing device that can draw glass tubes to produce glass microelectrodes for biological experiments. Therefore, even a small degree of misalignment of the two clamping parts of the microelectrode puller may cause the microelectrode not to be formed.

[0028] Therefore, before the drawing work is carried out, generally, the two clamping parts need to be adjusted to be aligned. However, at present, the two clamping parts of most microelectrode pullers need to be adjusted separately, which greatly increases the difficulty of adjustment. To solve the above problems, the present application provides a microelectrode puller that is convenient for debugging and assembly.

[0029] See Figure 1 , according to one or more embodiments of the present application, the microelectrode puller 1 may include: a clamping mechanism 10, a heating component 20, and a processor. The clamping mechanism 10 includes two clamping parts 11 for clamping both ends of the object to be drawn. The heating component 20 is disposed between the two clamping parts 11 of the clamping mechanism 10 and is used to heat a part of the object to be drawn. The processor is coupled to the clamping mechanism 10 and the heating component 20 to control the heating component 20 to heat the object to be drawn and control the two clamping mechanisms 10 to draw the object to be drawn during the process of the heating component 20 heating the object to be drawn.

[0030] Taking the production of glass microelectrodes as an example, the microelectrode puller 1 needs to heat at least a part of the glass blank tube to soften it through the heating component 20, and then pull the glass blank tube by the two clamping parts 11 to make it elongated and thinned, and cure the softened glass blank tube when it is stretched to a certain extent to complete one drawing. Glass microelectrodes can be obtained through one drawing or multiple drawings.

[0031] Regarding the specific structure of the above-mentioned microelectrode puller 1, reference can be made to the relevant descriptions in the following text. In addition, it should be noted that the clamping mechanism 10 described in the present application can not only be used for the above-mentioned microelectrode puller 1, but also for other types of drawing devices and achieve equivalent technical effects.

[0032] See Figure 1, according to one or more embodiments of the present application, the clamping mechanism 10 may include a base 15 and two clamping portions 11. The base 15 may have a positioning structure 150 extending along a preset direction. The two clamping portions 11 are spaced apart from each other along the preset direction and are respectively abutted against the positioning structure 150, so that the two clamping portions 11 are aligned along the preset direction.

[0033] See Figure 2 and Figure 3 , in the present application, the positioning structure 150 is formed on the base 15, and the two clamping portions 11 are simultaneously abutted against the positioning structure 150 to be uniformly positioned by the positioning structure 150. Therefore, the two clamping portions 11 can be aligned by using the positioning structure 150 conveniently and quickly.

[0034] In addition, the two clamping portions 11 may be exactly the same, may not be exactly the same, or may be in a mirror image relationship with each other, as long as they can play a role in clamping the object to be drawn. For example, the two clamping portions 11 may be symmetrically arranged and spaced apart from each other.

[0035] See Figure 3 , according to one or more embodiments of the present application, the positioning structure 150 includes a first positioning plane 1501 and a second positioning plane 1502. The first positioning plane 1501 and the second positioning plane 1502 are not parallel. The two clamping portions 11 are simultaneously abutted against the first positioning plane 1501 and the second positioning plane 1502.

[0036] In addition, the first positioning plane 1501 / second positioning plane 1502 may be a continuous plane or a discontinuous plane. In other words, the first positioning plane 1501 / second positioning plane 1502 may be a single plane or may include two coplanar planes.

[0037] When the two clamping portions 11 are abutted against one of the first positioning plane 1501 or the second positioning plane 1502, the orientations of the two clamping portions 11 can be made parallel to each other. When the two clamping portions 11 are simultaneously abutted against both the first positioning plane 1501 and the second positioning plane 1502, the first positioning plane 1501 and the second positioning plane 1502 can constrain the positions and orientations of the two clamping portions 11, so that the two clamping portions 11 can be aligned.

[0038] In addition, the planar structure is relatively easy to process during production and is easy to obtain high precision during production. Therefore, the above-mentioned positioning structure 150 also has the advantages of low production cost and convenient assembly. Of course, in some other embodiments, the positioning structure 150 may include a positioning curved surface (such as a cylindrical surface). When the two clamping portions 11 are simultaneously abutted against the positioning curved surface, the positioning curved surface can also constrain the positions and orientations of the two clamping portions 11.

[0039] See Figure 3 , according to one or more embodiments of the present application, positioning grooves 151 may be provided on the base 15. A side wall of the positioning groove 151 forms a first positioning plane 1501, and a bottom wall of the positioning groove 151 forms a second positioning plane 1502. Additionally, positioning steps may also be provided on the base 15. A side wall of the positioning step forms a first positioning plane 1501, and a wall surface connected to the side wall of the positioning step forms a second positioning plane 1502.

[0040] As described above, the first positioning plane 1501 / second positioning plane 1502 may be a continuous plane or a discontinuous plane. This means that the positioning groove 151 or the positioning step may be an integral structure or may be partitioned into at least two parts. The two clamping portions 11 may be respectively disposed on two spaced-apart parts of the positioning groove 151 or the positioning step.

[0041] Furthermore, the first positioning plane 1501 and the second positioning plane 1502 may be perpendicular to each other. For example, the positioning groove 151 is a rectangular groove, the bottom wall is horizontally arranged, and the side wall is vertically arranged. In this case, the positioning groove 151 or the positioning step is relatively easy to machine. Of course, the first positioning plane 1501 and the second positioning plane 1502 may also be arranged crosswise and obliquely. For example, the positioning groove 151 may be a dovetail groove or a trapezoidal groove.

[0042] See Figure 2 and Figure 3 , according to one or more embodiments of the present application, the two clamping portions 11 respectively include a mounting seat 12, a clamping assembly 13, and a slider assembly 14. The mounting seat 12 of the clamping portion 11 may be disposed on the base 15. The slider assembly 14 is disposed on the mounting seat 12. The clamping assembly 13 is disposed on the slider assembly 14. The slider assembly 14 may include a guide rail 141 and a slider 142 slidable along the guide rail 141. One of the guide rail 141 and the slider 142 is disposed on the mounting seat 12, and the other is disposed on the clamping assembly 13.

[0043] Wherein, the guide rail 12 may be a chute or a slide rail. The clamping mechanism 10 may further include a driving mechanism. The driving motor may be power-connected to the clamping assembly 13 to drive the clamping assembly 13 to move. The driving mechanism may include power components such as a driving motor, a driving magnet, or a traction wire.

[0044] See Figure 2 and Figure 3, according to one or more embodiments of the present application, the slider assembly 14 includes a guide rail 141 fixed to the mounting base 12 and a slider 142 fixed to the clamping assembly 13. The slider 142 can move along the guide rail 141 so that the clamping assembly 13 can move relative to the mounting base 12. The mounting base 12 has a slider assembly positioning surface 121, and the slider assembly 14 is positioned by the slider assembly positioning surface 121. The slider assembly 14 has a clamping assembly positioning surface 143, and the clamping assembly 13 is positioned by the clamping assembly positioning surface 143. The extending directions of the slider assembly positioning surface 121 and the clamping assembly positioning surface 143 may be the same as a preset direction.

[0045] Among them, the slider assembly positioning surface 121 may also include at least one of a positioning plane and a positioning curved surface. For example, the slider assembly positioning surface 121 may include two positioning planes, or one positioning curved surface, or one positioning plane and one positioning curved surface. Taking the slider assembly positioning surface 121 including two positioning planes as an example, the mounting base 12 may be provided with a step or a groove so that the side wall forms a positioning plane, and the bottom wall connected to the side wall forms another positioning plane. Similarly, the clamping assembly positioning surface 143 may include at least one of a positioning plane and a positioning curved surface. The formation manner and working principle of its structure may refer to the relevant description in the above slider assembly positioning surface 121, and will not be elaborated here again.

[0046] In this case, when the mounting base 12 abuts against the positioning surface, the mounting base 12 is positioned on the base 15; when the guide rail 141 of the slider assembly 14 abuts against the slider assembly positioning surface 121, the slider assembly 14 is positioned on the mounting base 12, and when the clamping assembly 13 abuts against the clamping assembly positioning surface 143, the clamping assembly 13 is positioned on the slider assembly 14. In this way, the two clamping assemblies 13 can be aligned.

[0047] See Figure 4 , according to one or more embodiments of the present application, the clamping assembly 13 may include a support plate 131, a pressing plate 132, and a locking assembly 133. The pressing plate 132 and the support plate 131 are arranged opposite to each other. See Figure 5 and Figure 6 , the locking assembly 133 is arranged on the support plate 131 and can be switched between a locked state and a released state. During the process of the locking assembly 133 switching from the released state to the locked state, the locking assembly 133 drives the pressing plate 132 to move towards the support plate 131. In the above manner, the locking assembly 133 can press and fix objects to be drawn with different diameters between the pressing plate 132 and the support plate 131.

[0048] Among them, the locking assembly 133 may include a screw 1331 disposed on the support plate 131 and a locking knob 1332 threadedly connected to the screw 1331. The locking knob 1332 can be close to or away from the support plate 131 when rotated. The pressing plate 132 may be disposed between the locking knob 1332 and the support plate 131, and is driven to move toward the support plate 131 until it is pressed against the support plate 131 when the locking knob 1332 approaches the support plate 131.

[0049] According to one or more embodiments of the present application, the locking assembly 133 further includes a stepped screw 1333 passing through the support plate 131 and the pressing plate 132, and an elastic reset member 1334 disposed between the pressing plate 132 and the support plate 131. Specifically, at least one of the support plate 131 and the pressing plate 132 may be provided with a receiving groove for receiving the elastic reset member 1334. The elastic reset member 1334 may be disposed in the receiving groove.

[0050] Among them, the elastic reset member 1334 may be a spring, and during the process of the locking assembly 133 switching from the locked state to the released state, it pushes the pressing plate 132 to move in a direction away from the support plate 131. The stepped screw 1333 can play a limiting role, reducing the possibility of the pressing plate 132 falling off due to the elastic reset member 1334 or the user over-twisting the locking assembly 133.

[0051] According to one or more embodiments of the present application, a fixing groove 1310 may be formed on the support plate 131. The fixing groove 1310 can be used to fix the object to be drawn, reducing the possibility of the object to be drawn sliding during the drawing process. The fixing groove 1310 may be in a "V" shape (see Figure 7 ), and thus can adapt to objects to be drawn with different diameters. Of course, the fixing groove 1310 may also be in a "C" shape or a "U" shape.

[0052] According to one or more embodiments of the present application, an operation groove 1311 may be formed on the support plate 131 (see Figure 2 or Figure 4 ), so as to partition the fixing groove 1310 into two discontinuous parts. Of course, in this case, the object to be drawn can still be stably supported in the fixing groove 1310. The operation groove 1311 can provide an operation space for other devices or users to facilitate the user or other devices to remove the object to be drawn.

[0053] See Figure 5 and Figure 6, according to one or more embodiments of the present application, an elastic cushion block 1321 opposite to the fixed groove 1310 is provided on the first mounting surface 1320 of the pressing plate 132 facing the base. The elastic cushion block 1321 can press the object to be drawn in the fixed groove 1310. By providing the elastic cushion block 1321, the possibility that the object to be drawn is deformed or broken by the extrusion of the pressing plate 132 and the support plate 131 can be reduced.

[0054] See Figure 8 and Figure 9 , according to one or more embodiments of the present application, the pressing plate 132 may be provided with a mounting hole 1325. The elastic cushion block 1321 includes a main body portion 1322 and a connecting portion 1323. The connecting portion 1323 is inserted and fixed in the mounting hole 1325. The main body portion 1322 is disposed on the first mounting surface 1320. In this case, the reliability of the installation of the elastic cushion block 1321 can be increased.

[0055] See Figure 8 and Figure 9 , according to one or more embodiments of the present application, the connecting portion 1323 has an inverted buckle structure 1323a. The mounting hole 1325 includes a first hole section 1325a and a second hole section 1325b. The first hole section 1325a is closer to the first mounting surface 1320. A limiting surface is formed between the first hole section 1325a and the second hole section 1325b. The limiting surface faces away from the first mounting surface 1320 and is used to limit the inverted buckle structure 1323a from entering the first hole section 1325a after the inverted buckle structure 1323a is disposed in the second hole section 1325b.

[0056] That is to say, during the process of the connecting portion 1323 being inserted into the mounting hole 1325, the inverted buckle structure 1323a can enter the second hole section 1325b after passing through the first hole section 1325a. After the inverted buckle structure 1323a enters the second hole section 1325b, it is not easy to enter the first hole section 1325a due to the action of the limiting surface, thereby further improving the installation stability of the elastic cushion block 1321 and reducing the possibility of separation between the elastic cushion block 1321 and the pressing plate 132.

[0057] In some specific embodiments, the connecting portion 1323 may have a neck portion 1323b and a reverse buckle structure 1323a. The outer diameter of the neck portion 1323b may be smaller than the inner diameter of the reverse buckle structure 1323a. The inner diameter of the first hole section 1325a may be smaller than the inner diameter of the second hole section 1325b, so that a step between the first hole section 1325a and the second hole section 1325b forms the above-mentioned limiting surface. The outer diameter of the reverse buckle structure 1323a may be larger than the inner diameter of the first hole section 1325a, so that the reverse buckle structure 1323a is not easily inserted into the first hole section 1325a. When the connecting portion 1323 of the elastic cushion block 1321 is assembled into the mounting hole 1325, the reverse buckle structure 1323a may first enter the first hole section 1325a. Since the inner diameter of the first hole section 1325a is smaller than the outer diameter of the reverse buckle structure 1323a, the reverse buckle structure 1323a is elastically deformed under extrusion. When the reverse buckle structure 1323a passes through the first hole section 1325a and enters the second hole section 1325b, the reverse buckle structure 1323a elastically recovers, so that the reverse buckle structure 1323a is not easily reversely inserted into the first hole section 1325a without external force, thereby playing a limiting role to a certain extent.

[0058] In addition, the inner diameter of the first hole section 1325a may be approximately equal to the outer diameter of the neck portion 1323b. For example, it may be equal to or slightly smaller than the outer diameter of the neck portion 1323b. The first hole section 1325a can enable the neck portion 1323b to be inserted therein.

[0059] As described above, since the outer diameter of the reverse buckle structure 1323a is larger than that of the first hole section 1325a, during the installation process, the reverse buckle structure 1323a is also not easily inserted into the mounting hole 1325 through the first hole section 1325a. Therefore, the mounting hole 1325 may further include a guiding hole section 1325c. The guiding hole section 1325c may be in a flared shape, and the inner diameter on the side close to the first mounting surface 1320 is larger than the outer diameter of the reverse buckle structure 1323a, so as to play a guiding role when the reverse buckle structure 1323a is inserted into the mounting hole 1325.

[0060] Generally, in order to reduce the volume, the elastic cushion block 1321 is generally not arranged at the center of the pressing plate 132, but is arranged close to the edge of the pressing plate 132. However, in this case, the pressing plate 132 may be inclined under the action of the locking assembly 133, and then squeeze the object to be drawn, causing it to shift.

[0061] See Figure 4 、 Figure 8 and Figure 9, according to one or more embodiments of the present application, an auxiliary elastic cushion block 1324 is further provided on the first mounting surface 1320 of the pressing plate 132. The auxiliary elastic cushion block 1324 and the elastic cushion block 1321 are arranged at intervals and are staggered from the fixing groove 1310. The auxiliary elastic cushion block 1324 and the elastic cushion block 1321 can be silicone rubber cushion blocks. In this case, the auxiliary elastic cushion block 1324 and the elastic cushion block 1321 can be arranged at uniform intervals, reducing the possibility of the pressing plate 132 tilting during the locking process, and further reducing the possibility of squeezing the object to be drawn and causing it to shift.

[0062] See Figure 10 , Figure 11 and Figure 12 , according to one or more embodiments of the present application, the mounting seat 12 is provided with a limiting elastic piece 122. A limiting groove 1312 is provided on one side of the clamping assembly 13 facing the mounting seat 12, and the limiting elastic piece 122 is configured to be embedded in the limiting groove 1312 to limit the movement of the clamping assembly 13 when the clamping assembly 13 moves to a preset position. Specifically, the limiting groove 1312 can be opened on the support plate 131.

[0063] According to one or more embodiments of the present application, the clamping assembly 13 can move away from another clamping assembly 13 opposite thereto under the traction of the traction wire. In this case, after the drawing is completed and the object to be drawn is broken to obtain the target product, for example, after the glass blank tube is broken to form a glass microelectrode, the clamping assembly 13 may continue to move under the action of inertia after the traction wire stops moving.

[0064] The clamping portion 11 can further include a collision prevention block 123 provided on the mounting seat 12 to limit the movement range of the clamping assembly 13. For example, when the clamping assembly 13 continues to move due to inertia, it can stop moving by colliding with the collision prevention block 123.

[0065] However, after the clamping assembly 13 collides with the collision prevention block 123, it may move in the direction close to another clamping assembly 13, and may even cause the drawn target product (such as a glass microelectrode) to collide and be damaged.

[0066] In this case, the limiting elastic piece 122 can be configured to be embedded in the limiting groove 1312 when the clamping assembly 13 moves to a preset position to limit the one-way movement of the clamping assembly 13. For example, it limits the movement of the clamping assembly 13 in the direction of approaching another clamping assembly 13. One end of the limiting elastic piece 122 can be fixed to the mounting base 12, and the other end warps away from the mounting base 12. The other end of the limiting elastic piece 122 can extend away from the other clamping part 11. In this case, when the clamping assembly 13 moves in the direction of approaching another clamping assembly 13 and reaches the preset position, the limiting elastic piece 122 is embedded in the limiting groove 1312. At this time, if the clamping assembly 13 continues to move, it will press the limiting elastic piece 122, and the limiting elastic piece 122 can exert a reaction force on the clamping assembly 13 to stop its movement. Through the above method, the possibility of damage to the target product caused by the rebound of the clamping assembly 13 after hitting the anti-collision block 123 can be reduced.

[0067] In addition, when the clamping assembly 13 moves in the direction away from another clamping assembly 13 and reaches the preset position, even if the limiting elastic piece 122 is placed in the limiting groove 1312, it is difficult for the limiting elastic piece 122 to exert a reaction force on the clamping assembly 13. On the contrary, the clamping assembly 13 will continue to move after pushing aside the limiting elastic piece 122.

[0068] See Figure 10 、 Figure 11 and Figure 12 , according to one or more embodiments of the present application, the clamping part 11 further includes a elastic piece reset assembly 134 disposed on the clamping part 11. The elastic piece reset assembly 134 is used to drive the limiting elastic piece 122 embedded in the limiting groove 1312 out of the limiting groove 1312.

[0069] According to one or more embodiments of the present application, the elastic piece reset assembly 134 can include a key 1341. The clamping assembly 13 can be provided with a through hole 1313. The key can be movably inserted into the through hole 1313. The key 1341 can have a touch end 1341a and an abutting end 1341b. The abutting end 1341b is used to extend out of the through hole 1313 and abut against the limiting elastic piece 122 when the touch end 1341a is pressed, so as to drive the limiting elastic piece 122 out of the limiting groove 1312.

[0070] Specifically, the elastic sheet reset assembly 134 can be arranged on the support plate 131. The support plate 131 can be provided with through holes 1313 that are adjacent to and spaced from the limiting groove 1312. The touch end 1341a of the button 1341 is arranged on the side opposite to the side where the limiting groove 1312 is located, so that when pressed, the abutting end 1341b at the other end of the button 1341 can extend out through the through hole 1313 and abut against the limiting elastic sheet 122, and drive the limiting elastic sheet 122 to leave the limiting groove 1312. In other words, when the user presses the touch end 1341a of the button 1341, the other end of the button 1341 extends out through the through hole 1313 and abuts against and drives the limiting elastic sheet 122 to move away from the support plate 131, and then leave the limiting groove 1312.

[0071] In addition, the elastic sheet reset assembly 134 can further include an elastic member 1342. The elastic member 1342 can be arranged between the touch end 1341a and the clamping assembly 13, and is used to push the button 1341 to reset after the pressing action acting on the touch end 1341a is cancelled. Further, a stepped hole 1314 is provided on the pressing plate 132, and the stepped hole 1314 communicates with the through hole 1313. The elastic member 1342 can be arranged in the stepped hole 1314, with one end abutting against the stepped table surface formed by the stepped hole 1314 and the through hole 1313, and the other end abutting against the touch end 1341a of the button 1341.

[0072] Considering that during the repeated pressing of the button 1341, the end of the elastic member 1342 away from the stepped table surface is relatively free, may shake, or even move out of the stepped hole 1314, and then be damaged by being squeezed by the button 1341.

[0073] According to one or more embodiments of the present application, the outer diameter of the touch end 1341a can be greater than the outer diameter of the abutting end 1341b, and the end surface 1341c of the touch end 1341a facing the abutting end 1341b is at least partially recessed away from the abutting end 1341b to form an elastic member receiving groove 1341d. One end of the elastic member 1342 abuts against the clamping assembly, and the other end abuts against the bottom wall of the elastic member receiving groove 1341d.

[0074] Further, one end of the elastic member 1342 abuts against the stepped table surface formed by the stepped hole 1314 and the through hole 1313, and the other end abuts against the bottom wall of the elastic member receiving groove 1341d. The elastic member 1342 can include a spring sleeved on the button 1341. In this case, the end of the elastic member 1342 away from the stepped table surface can be limited in the elastic member receiving groove 1341d, reducing the possibility of it being damaged by free shaking and being squeezed, and improving the reliability and stability of the elastic sheet reset assembly 134.

[0075] Optionally, the abutting end 1341b of the button 1341 may be provided with a locking member 1343. The locking member 1343 may be used to abut against the support plate after the button 1341 is reset, and restrict the separation of the button 1341 from the support plate 1341 under the action of the elastic member.

[0076] 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 them; 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 described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be covered by the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A clamping mechanism, characterized in that, include: The base has a positioning structure extending along a preset direction, Two clamping parts are arranged on the base at intervals along a preset direction and respectively abut against the positioning structure so that the two clamping parts are aligned along the preset direction; The positioning structure comprises a first positioning plane and a second positioning plane, the first positioning plane and the second positioning plane are not parallel, and the two clamping portions abut against the first positioning plane and the second positioning plane at the same time; or The positioning structure comprises a positioning curved surface, and the two clamping parts abut against the positioning curved surface at the same time.

2. The clamping mechanism according to claim 1, characterized in that: A positioning groove is provided on the base, a side wall of the positioning groove forms the first positioning plane, and a bottom wall of the positioning groove forms the second positioning plane; Alternatively, a positioning step is provided on the base, a side wall of the positioning step forms the first positioning plane, and a wall surface connected to the side wall of the positioning step forms the second positioning plane.

3. The clamping mechanism according to claim 1, characterized in that: The two clamping parts respectively include a mounting seat, a clamping assembly and a slider assembly, wherein the slider assembly includes a guide rail fixed to the mounting seat and a slider fixed to the clamping assembly, and the slider can move along the guide rail so that the clamping assembly can move relative to the mounting seat. The mounting seat has a slider assembly positioning surface, the slider assembly is positioned by the slider assembly positioning surface, the slider assembly has a clamping assembly positioning surface, the clamping assembly is positioned by the clamping assembly positioning surface, and the extension direction of the slider assembly positioning surface and the clamping assembly positioning surface is the same as the preset direction.

4. The clamping mechanism according to claim 3, characterized in that: The clamping assembly includes a support plate, a pressure plate and a locking assembly. The pressure plate and the support plate are arranged relative to each other. The locking assembly is arranged on the support plate and can be switched between a locked state and a released state. The locking assembly drives the pressure plate to move toward the support plate during the process of switching from the released state to the locked state.

5. The clamping mechanism according to claim 4, characterized in that: The support plate is provided with a fixing groove, and the first mounting surface of the pressure plate facing the base is provided with an elastic pad opposite to the fixing groove. The pressing plate is provided with a mounting hole, the elastic pad comprises a main body and the connecting part, the connecting part is inserted and fixed in the mounting hole, and the main body is arranged on the first mounting surface.

6. The clamping mechanism according to claim 5, characterized in that: The connecting portion has an undercut structure, and the mounting hole includes a first hole segment and a second hole segment. The first hole segment is closer to the first mounting surface, and a limited position surface is formed between the first hole segment and the second hole segment. The limited position surface faces the side away from the first mounting surface and is used to limit the undercut structure from entering the first hole segment after the undercut structure is set in the second hole segment.

7. The clamping mechanism according to claim 5, characterized in that: An auxiliary elastic cushion block is further arranged on the first mounting surface of the pressing plate. The auxiliary elastic cushion block and the elastic cushion block are arranged at intervals and are staggered with the fixed groove.

8. The clamping mechanism according to claim 4, wherein the locking assembly further includes a stepped screw passing through the support plate and the pressing plate, and an elastic resetting member, and the elastic resetting member is arranged between the pressing plate and the support plate.

9. The clamping mechanism according to claim 3, wherein a limiting elastic piece is arranged on the mounting seat, a limiting groove is arranged on one side of the clamping assembly facing the mounting seat, and the limiting elastic piece is configured to be embedded in the limiting groove when the clamping assembly moves to a preset position to limit the movement of the clamping assembly.

10. A microelectrode puller, characterized in that, including: the clamping mechanism according to any one of claims 1-9, for clamping both ends of an object to be drawn; a heating assembly, arranged between two clamping parts of the clamping mechanism, for heating a part of the object to be drawn; a processor, coupled to the clamping mechanism and the heating assembly, to control the heating assembly to heat the object to be drawn, and control the two clamping mechanisms to draw the object to be drawn during the heating of the object to be drawn by the heating assembly.

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