Fixing device, fixing equipment and cutting equipment

Abstract

The invention provides a fixing device, fixing equipment and cutting equipment, and relates to the field of drawing forming of glass tubes, and the fixing device comprises a fixing frame and a clamping assembly; the clamping assembly is installed on the fixing frame and provided with a plurality of clamping ends provided with rolling bodies, the multiple clamping ends can be close to one another, the projection, towards the fixing frame, of each clamping end is located in an inner frame of the fixing frame so as to clamp a pipe, and the multiple clamping ends can be far away from one another so as to relieve clamping of the pipe. When the fixing device provided by the invention is used for cutting and sampling the pipe, the pipe is rotated, so that the flatness of a cutting port can be ensured, the cylindricity of the pipe can be ensured, and the influence of cutting and sampling on a subsequent detailed detection process is effectively reduced.

Description

Technical Field

[0001] This disclosure relates to the field of glass tube drawing and forming, and more particularly to a fixing device, fixing equipment, and cutting equipment. Background Technology

[0002] Glass tube drawing refers to the continuous stretching of a glass rod softened at high temperature into a slender tubular structure with uniform wall thickness. This process requires precise control of temperature, stretching speed, and cooling process to ensure accurate inner diameter and defect-free quality. It is widely used in medicine, scientific research, electronics, and other fields, demonstrating advanced glass processing technology.

[0003] For drawn glass tubes, quality inspectors need to check and observe them to prevent quality problems. Glass tubes with defects found after inspection need to be marked, cut, and sampled for more detailed testing. Currently, this is done manually using diaphragms or metal tools to cut and sample the glass tubes.

[0004] During manual cutting and sampling, the operator holds the glass tube with their hand while cutting it on a membrane or metal knife. If the operator does not rotate the glass tube, the cut end will be uneven, making it difficult to perform detailed testing later. If the operator rotates the glass tube by hand, the cylindricity of the glass tube after cutting cannot be guaranteed, which may cause the glass tube to crack, which will also affect the subsequent detailed testing process. Summary of the Invention

[0005] One of the technical problems this disclosure aims to solve is: how to sample defect points in glass tubes without affecting detailed inspection.

[0006] To solve the above-mentioned technical problems, the first aspect of this disclosure provides a fixing device, which includes: a fixing frame;

[0007] The clamping assembly is mounted on a fixed frame and has multiple clamping ends equipped with rolling elements. The multiple clamping ends can approach each other, and the projection of each clamping end onto the fixed frame is located within its inner frame to achieve clamping of the pipe. The multiple clamping ends can also move away from each other to release the clamping of the pipe.

[0008] In some embodiments, the clamping component includes:

[0009] The mounting frame is rotatably connected to one side of the fixed frame, and the projection of the inner frame of the mounting frame toward the fixed frame is located within the inner frame of the fixed frame.

[0010] Multiple clamping claws are evenly distributed on the side of the mounting frame away from the fixed frame. Each clamping claw has a rolling element at its end to form a clamping end. The projection of each rolling element toward the mounting frame is located in the inner frame of the mounting frame. When the mounting frame is rotated, the multiple clamping ends move closer to or further away from each other.

[0011] In some embodiments, the gripper claw includes:

[0012] Multiple straight rods, one end of each straight rod is rotatably connected to a fixed frame, the other end of each straight rod is provided with a rolling element, and the rod body of each straight rod is slidably rotatably connected to the mounting frame, with the sliding direction being the length direction of the straight rod.

[0013] In some embodiments, the gripper claw further includes:

[0014] Multiple connecting sleeves are evenly distributed on the mounting frame and rotatably connected to it. Each connecting sleeve corresponds to a straight rod, and each connecting sleeve is fitted onto its corresponding straight rod, allowing it to slide back and forth along the length of the corresponding straight rod.

[0015] In some embodiments, the mounting frame is annular;

[0016] The fixing device further includes: a first driving component, which is disposed on one side of the fixing frame and has its driving end connected to the periphery of the mounting frame. The first driving component is used to drive the mounting frame to rotate.

[0017] In some embodiments, the first driving component includes: a screw, an adjusting component, and a fixing component;

[0018] The fixed component is rotatably connected to one side of the fixed frame. The screw passes through the fixed component and is rotatably connected to the fixed component. The adjusting component has a threaded hole and cooperates with the screw. The adjusting component is rotatably connected to the mounting frame.

[0019] The rotating screw and the adjusting component move along the length of the screw to make the mounting frame rotate.

[0020] In some embodiments, the fixing device further includes:

[0021] The locking cylinder is fixedly connected to the mounting frame and passes through the inner frame of the fixed frame, extending to the other side of the fixed frame. The outer side of the locking cylinder is provided with threads.

[0022] The locking nut is located on the other side of the mounting frame and cooperates with the locking sleeve. Tightening or loosening the locking nut allows it to abut against the fixed frame to lock or release the mounting frame.

[0023] In some embodiments, the rolling element is a roller, and the axis of the roller is perpendicular to the inner frame region of the mounting frame;

[0024] The fixing device also includes a second driving component, which is connected to the roller and is used to drive the roller to rotate.

[0025] A second aspect of this disclosure provides a fixing device, which includes: a support base;

[0026] At least two fixing devices provided in the first aspect of this disclosure are arranged side by side at intervals on a support base, and the inner frames of the multiple fixing device mounting frames correspond to each other.

[0027] The second aspect of this disclosure provides a fixing device that can directly use the fixing device provided in the first aspect. For the specific implementation structure, please refer to the relevant content described in the first aspect above, which will not be repeated here.

[0028] A third aspect of this disclosure provides a cutting apparatus, which includes: the fixing device provided in the second aspect of this application;

[0029] The cutting tool is connected to the support base of the fixed equipment via a moving device.

[0030] The cutting equipment provided in the third aspect of this disclosure can directly use the fixing equipment provided in the second aspect above. For the specific implementation structure, please refer to the relevant content described in the second aspect above, which will not be repeated here.

[0031] Compared to existing technologies, the fixing device provided in this disclosure clamps the pipe by placing a clamping assembly on a fixed frame. The clamping assembly has multiple clamping ends equipped with rolling elements, which are positioned close together to clamp the pipe. The projection of each clamping end onto the fixed frame is located within its frame. During operation, the pipe is first inserted into the inner frame of the fixed frame, bringing the multiple clamping ends closer together. The rolling elements on these clamping ends abut against the pipe, allowing it to be fixed to the fixing device while simultaneously rotating relative to it. When cutting and sampling the pipe, rotating it ensures both a flat cut and the pipe's cylindricity, effectively reducing the impact of cutting and sampling on subsequent detailed testing processes. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a first-view structural schematic diagram of the fixing device disclosed in the embodiments of this disclosure;

[0034] Figure 2 This is a structural schematic diagram of the fixing device disclosed in the embodiments of this disclosure from a second perspective;

[0035] Figure 3 This is a schematic diagram of the structure of the fixed equipment disclosed in this embodiment.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Fixing device; 11. Fixing frame;

[0038] 12. Clamping assembly; 121. Mounting frame; 122. Clamping claw; 1221. Straight rod; 1222. Connecting sleeve; 1223. Rolling element;

[0039] 13. First driving component; 131. Screw; 132. Adjusting component; 133. Fixing component;

[0040] 14. Locking cylinder; 15. Locking nut;

[0041] 2. Support base; 3. Pipes. Detailed Implementation

[0042] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0043] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0044] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0046] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0047] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0048] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0049] Example 1

[0050] like Figure 1 As shown, a first aspect of this disclosure provides a fixing device 1, which includes a fixing frame 11 and a clamping assembly 12. The clamping assembly 12 is mounted on the fixing frame 11 and has a plurality of clamping ends provided with rolling elements 1223. The plurality of clamping ends can approach each other, and the projection of each clamping end onto the fixing frame 11 is located in its inner frame to achieve clamping of the pipe 3. The plurality of clamping ends can move away from each other to release the clamping of the pipe 3.

[0051] Specifically, the fixed frame 11 can be a rectangular frame or a circular frame, without limitation on its specific shape. The specific connection method between the clamping component 12 and the mounting frame 121 can be welding or bolting, and the specific connection method is determined according to the actual selection of the clamping component 12. The clamping component 12 can be a combination of multiple actuating rods or a chuck structure to achieve mutual proximity of the clamping ends. The rolling element 1223 provided on the clamping end of the clamping component 12 can be a spherical rolling element or a roller, without specific limitation. During the clamping process of the pipe 3, the pipe 3 passes through the inner frame of the fixed frame 11. In order for the clamping component 12 to clamp the pipe 3, it is necessary to ensure that the projection of each clamping end onto the fixed frame 11 is located in its inner frame. It can be understood that the clamping and contact clamping process of multiple clamping ends on the pipe 3 is all in the space with the inner frame as the length direction section.

[0052] Compared to existing technologies, the fixing device 1 provided in this disclosure clamps the pipe 3 by placing a clamping assembly 12 on a fixing frame 11. The clamping assembly 12 has multiple clamping ends equipped with rolling elements 1223. These clamping ends are positioned close to each other to clamp the pipe 3, and the projection of each clamping end onto the fixing frame 11 is located within its frame. During operation, the pipe 3 is first inserted into the inner frame of the fixing frame 11, bringing the multiple clamping ends close to each other. The rolling elements 1223 on the multiple clamping ends abut against the pipe 3, allowing the pipe 3 to be fixed on the fixing device 1 while simultaneously rotating relative to it. When cutting and sampling the pipe 3, rotating the pipe 3 ensures both the flatness of the cut end and the cylindricity of the pipe 3, effectively reducing the impact of cutting and sampling on subsequent detailed testing processes.

[0053] like Figure 1 As shown, in some embodiments, the clamping assembly 12 includes: a mounting frame 121 and a plurality of clamping claws 122; the mounting frame 121 is rotatably connected to one side of the fixed frame 11, and the projection of the inner frame of the mounting frame 121 toward the fixed frame 11 is located in the inner frame of the fixed frame 11; the plurality of clamping claws 122 are evenly distributed on the side of the mounting frame 121 away from the fixed frame 11, and each clamping claw 122 has a rolling element 1223 at its end to form a clamping end, and the projection of each rolling element 1223 toward the mounting frame 121 is located in the inner frame of the mounting frame 121. When the mounting frame 121 is rotated, the plurality of clamping ends move closer to or further away from each other.

[0054] The mounting frame can be rectangular or circular; its specific shape is not limited. To facilitate the rotation of the mounting frame 121, in this embodiment, both the mounting frame 121 and the fixing frame 11 are circular frames. The clamping claw 122 can be a straight rod with a rolling element 1223 at one end, or a claw with a connecting base and a rolling element 1223; its specific structure is not limited. The mounting frame 121 and multiple clamping claws 122 are positioned on one side of the fixing frame 11, allowing the multiple clamping claws 122 greater operating space, enabling the fixing device 1 to fix larger pipes 3.

[0055] The rotating mounting frame 121, allowing multiple clamping ends to move closer or further apart, can be achieved by creating threads on the surface of the mounting frame and corresponding threaded seats on the clamping claws 122. The clamping claws 122 are then mounted on the threaded side of the mounting frame to form a chuck structure. Alternatively, the rotating frame can be used to drive a straight rod; the specific implementation structure is not limited. Using the rotation of the mounting frame 121 to move the multiple clamping claws 122 closer or further apart simplifies the operation and structure, improving the efficiency of the fixing device 1 in clamping the pipe 3.

[0056] like Figure 1 As shown, in some embodiments, the gripper 122 includes: a plurality of straight rods 1221, one end of each straight rod 1221 being rotatably connected to the fixed frame 11, the other end of each straight rod 1221 being provided with a rolling element 1223, and the rod body of each straight rod 1221 being slidably rotatably connected to the mounting frame 121, with the sliding direction being the length direction of the straight rod 1221.

[0057] Specifically, one end of each straight rod 1221 can be rotatably connected to the fixed frame 11 via a shaft and bearing, or via gear transmission, without limiting the specific connection method. The other end of the straight rod 1221 can be connected to the rolling element 1223 via a rotating shaft or via a mounting base, without limiting the specific connection method.

[0058] The slidable rotatable connection position between the rod body of each straight rod 1221 and the mounting frame 121 is relatively close to the position where one end of the straight rod 1221 is rotatably connected to the fixed frame 11. Specifically, this can be achieved by providing a long, narrow groove extending along the length of the straight rod 1221 on the rod body, and a connecting shaft passing through the long, narrow groove on the mounting frame 121. This allows the straight rod 1221 to slide and rotate relative to the mounting frame 121 along its length. Alternatively, a sleeve can be used to achieve the slidable rotatable connection. The specific implementation method is not limited and can be selected according to actual needs. One end of the straight rod 1221 with the rolling element 1223 is set as a clamping end.

[0059] During operation, the rotating mounting frame 121 causes the straight rod 1221 to rotate around the connection point between one end of the straight rod 1221 and the fixed bracket, so that the rolling elements 1223 set at the other end of the multiple straight rods 1221 move away from or closer to each other. At the same time, the connection point between the mounting frame 121 and the rod body of the straight rod 1221 can slide along the length direction of the straight rod 1221, thereby avoiding interference problems that occur when the mounting frame 121 drives the straight rod 1221 to rotate.

[0060] like Figure 1 As shown, in some embodiments, the clamping claw 122 further includes: a plurality of connecting sleeves 1222, which are evenly distributed on the mounting frame 121 and rotatably connected thereto. Each connecting sleeve 1222 corresponds to each straight rod 1221, and each connecting sleeve 1222 is sleeved on its corresponding straight rod 1221, so that it can slide back and forth along the length direction of the corresponding straight rod 1221.

[0061] Specifically, the cross-sections of the multiple connecting sleeves 1222 along their length are the same as the cross-sections of the straight rod 1221 along their length, to facilitate the fitting of the connecting sleeves 1222. In this embodiment, the mounting frame 121 can be a stacked two-layer frame structure, with the two side frames connected by connecting blocks. The multiple connecting sleeves 1222 can be evenly distributed between the two layers and rotatably connected by a pivot. Each connecting sleeve 1222 is positioned relatively close to one end of its corresponding straight rod 1221 and connected to the fixed frame 11. The connecting sleeve 1222 can slide along the length of the straight rod 1221 while rotating relative to the mounting frame 121, thereby achieving a slidable rotational connection between the mounting frame 121 and the straight rod 1221.

[0062] like Figure 1As shown, in some embodiments, the mounting frame 121 is annular; the fixing device 1 further includes a first driving component 13, which is disposed on one side of the fixing frame 11, and the driving end is connected to the periphery of the mounting frame 121. The first driving component 13 is used to drive the mounting frame 121 to rotate.

[0063] Specifically, the annular mounting frame facilitates its rotation. The first driving component 13 can be a combination of a rotating motor and a gear set, and its specific form is not limited. It only needs to be able to drive the mounting frame 121 to rotate. The connection method between the first driving component 13 and the fixed frame 11 and the mounting frame 121 is not specifically limited, but can be determined according to the selection of the first driving component 13. The first driving component 13 enables the rotation of the mounting component, allowing the fixing device 1 to clamp the pipe 3.

[0064] like Figure 1 As shown, in some embodiments, the first driving component 13 includes: a screw 131, an adjusting component 132, and a fixing component 133; the fixing component 133 is rotatably connected to one side of the fixing frame 11, the screw 131 passes through the fixing component 133 and is rotatably connected to the fixing component 133, the adjusting component 132 has a threaded hole and cooperates with the screw 131, and the adjusting component 132 is rotatably connected to the mounting frame 121; wherein, rotating the screw 131 causes the adjusting component 132 to move along the length direction of the screw 131, thereby causing the mounting frame 121 to rotate.

[0065] Specifically, the fixing component 133 can be a fixing block with a through hole, or it can be any other workpiece through which the screw 131 can pass. The connection between the fixing component 133 and the fixing frame 11 can be achieved through a rotating shaft and a bearing. The connection between the screw 131 and the fixing component 133 can be achieved through a bearing, or a threadless area can be provided on the screw 131, which is clearance-fitted with the through hole on the fixing component 133, so that the thread on the screw 131 does not affect the rotation of either component. The adjusting component 132 and the mounting frame 121 can be rotatably connected through a rotating shaft, with the threaded hole of the adjusting component 132 screwed into the screw 131. A rotating handle can also be provided at the end of the fixing component 133 away from the adjusting component 132 to facilitate rotation of the screw 131 by the operator.

[0066] During operation, rotating the screw 131 causes the adjusting component 132 to move along the length of the screw 131. Simultaneously, the adjusting component 132 rotates the mounting frame 121, causing the multiple clamping ends on the clamping assembly 12 to move closer or further apart. Since the fixing component 133 and the adjusting component 132 are rotatably connected to the fixing frame 11 and the mounting frame 121 respectively, interference problems caused by the adjusting component 132 rotating the mounting frame 121 are avoided. This design is simple, easy to operate, and facilitates the rapid fixing of the pipe 3 by the fixing device 1.

[0067] like Figure 2 As shown, in some embodiments, the fixing device 1 further includes: a locking cylinder 14 and a locking nut 15; the locking cylinder 14 is fixedly connected to the mounting frame 121 and passes through the inner frame of the fixing frame 11, extending to the other side of the fixing frame 11, and the outer side of the locking cylinder 14 is provided with threads; the locking nut 15 is located on the other side of the mounting frame 121 and cooperates with the locking cylinder 14, tightening or loosening the locking nut 15, and the locking nut 15 can abut against the fixing frame 11 to lock or release the mounting frame 121.

[0068] Specifically, the connection between the locking cylinder 14 and the mounting frame 121 can be welding or integral molding; the specific connection method is not limited. The outer surface of the locking cylinder 14 is threaded. To prevent the threads from affecting the rotation of the mounting frame 121, the threads can be provided only on the portion of the outer surface of the locking cylinder 14 extending to the other side of the fixed frame 11. The locking nut 15 is sleeve-shaped and is fitted onto the portion of the locking cylinder 14 extending to the other side of the fixed frame 11. When the clamping assembly 12 has finished clamping the pipe 3, the locking nut 15 can be tightened to abut against the fixed frame 11, thereby locking the mounting frame 121; or the locking nut 15 can be loosened to release its abutment against the fixed frame 11, thereby releasing the mounting frame 121 from locking.

[0069] like Figure 1 As shown, in some embodiments, the rolling element 1223 is a roller, and the axis of the roller is perpendicular to the inner frame region of the mounting frame 121; the fixing device 1 further includes: a second driving component, which is connected to the roller and is used to drive the roller to rotate.

[0070] Specifically, the second driving component can be a rotary motor, which drives the rotation of the rolling elements 1223 to achieve automated rotation of the pipe 3 fixed by the fixing device 1, eliminating the need for manual rotation of the pipe 3. It should be noted that when the second driving component drives the rolling elements 1223 to rotate, it is necessary to ensure that the rotation direction and speed of all rolling elements 1223 remain consistent.

[0071] Example 2

[0072] like Figure 3 As shown, the second aspect of this disclosure provides a fixing device, which includes: a support base 2 and at least two fixing devices 1 provided in the first aspect of this disclosure. The at least two fixing devices 1 are arranged side by side on the support base 2 at intervals, and the inner frames of the mounting frame 121 of the multiple fixing devices 1 correspond to each other.

[0073] Specifically, the support base 2 can be a workbench or a support base 2 assembled from multiple rods; its specific structure is not limited. The connection between the fixing device 1 and the support base 2 can be welding or bolting; the specific connection method is not limited. Two or more fixing devices 1 can provide a stable fixation for the longer tube 3, thereby enabling sampling of glass tube defects without affecting detailed inspection.

[0074] The fixing device 1 described in this embodiment 2 can be directly used as the fixing device 1 provided in the above embodiment 1. For the specific implementation structure, please refer to the relevant content described in the above embodiment 1, which will not be repeated here.

[0075] Example 3

[0076] The third aspect of this disclosure provides a cutting device, which includes a fixing device and a cutting tool provided in the second aspect of this disclosure; the cutting tool is connected to the support base 2 of the fixing device through a moving device.

[0077] Specifically, the fixing device described in this embodiment three can directly use the fixing device provided in embodiment two above. The specific implementation structure can be found in the relevant content described in embodiment two above, and will not be repeated here. The moving device can be a cutting tool mounting frame composed of vertical and horizontal guide rails, or a placement platform capable of moving in multiple directions; its specific structure is not limited. The tube 3 is fixed using the fixing device, and a cutting tool is used to sample the tube 3, so as to sample the defect points of the glass tube without affecting detailed inspection.

[0078] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0079] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A fixing device, characterized in that, include: Fixed frame (11); A clamping assembly (12) is mounted on the fixed frame (11). The clamping assembly (12) has a plurality of clamping ends provided with rolling elements (1223). The plurality of clamping ends can approach each other, and the projection of each clamping end onto the fixed frame (11) is located in its inner frame to achieve clamping of the pipe (3). The plurality of clamping ends can move away from each other to release the clamping of the pipe (3).

2. The fixing device according to claim 1, characterized in that, The clamping assembly (12) includes: Mounting frame (121) is rotatably connected to one side of fixed frame (11), and the projection of the inner frame of mounting frame (121) toward fixed frame (11) is located in the inner frame of fixed frame (11). Multiple clamping claws (122) are evenly distributed on the side of the mounting frame (121) away from the fixed frame (11). Each clamping claw (122) has a rolling element (1223) at its end to form the clamping end. The projection of each rolling element (1223) toward the mounting frame (121) is located in the inner frame of the mounting frame (121). When the mounting frame (121) is rotated, the multiple clamping ends move closer to or further away from each other.

3. The fixing device according to claim 2, characterized in that, The clamping claw (122) includes: Multiple straight rods (1221) are provided, one end of each straight rod (1221) is rotatably connected to the fixed frame (11), the other end of each straight rod (1221) is provided with the rolling element (1223), and the rod body of each straight rod (1221) is slidably rotatably connected to the mounting frame (121), with the sliding direction being the length direction of the straight rod (1221).

4. The fixing device according to claim 3, characterized in that, The clamping claw (122) also includes: Multiple connecting sleeves (1222) are evenly distributed on the mounting frame (121) and rotatably connected to it. Each connecting sleeve (1222) corresponds to each straight rod (1221). Each connecting sleeve (1222) is sleeved on its corresponding straight rod (1221) so that it can slide back and forth along the length direction of the corresponding straight rod (1221).

5. The fixing device according to any one of claims 2-4, characterized in that, The mounting frame (121) is in the shape of a ring; The fixing device (1) further includes a first driving component (13), which is disposed on one side of the fixing frame (11), and the driving end is connected to the periphery of the mounting frame (121). The first driving component (13) is used to drive the mounting frame (121) to rotate.

6. The fixing device according to claim 5, characterized in that, The first driving component (13) includes: a screw (131), an adjusting component (132), and a fixing component (133); The fixing component (133) is rotatably connected to one side of the fixing frame (11), the screw (131) passes through the fixing component (133) and is rotatably connected to the fixing component (133), the adjusting component (132) is provided with a threaded hole and cooperates with the screw (131), and the adjusting component (132) is rotatably connected to the mounting frame (121); When the screw (131) is rotated, the adjusting component (132) moves along the length of the screw (131) to make the mounting frame (121) rotate.

7. The fixing device according to claim 5, characterized in that, Also includes: Locking cylinder (14) is fixedly connected to the mounting frame (121) and passes through the inner frame of the fixed frame (11) to extend to the other side of the fixed frame (11). The outer side of the locking cylinder (14) is provided with threads. A locking nut (15) is located on the other side of the mounting frame (121) and cooperates with the locking cylinder (14). The locking nut (15) is tightened or loosened. The locking nut (15) can abut against the fixing frame (11) to lock or release the mounting frame (121).

8. The fixing device according to claim 1, characterized in that, The rolling element (1223) is a roller, and the axis of the roller is perpendicular to the inner frame area of ​​the mounting frame (121); The fixing device (1) further includes a second driving component, which is connected to the roller and is used to drive the roller to rotate.

9. A fixed device, characterized in that, include: Support base (2); At least two fixing devices (1) as described in claims 1-8, wherein at least two fixing devices (1) are arranged side by side at intervals on the support base (2), and the inner frames of the mounting frames (121) of the plurality of fixing devices (1) correspond to each other.

10. A cutting device, characterized in that, include: The fixed device as described in claim 9; The cutting tool is connected to the support base (2) of the fixed device via a moving device.

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