Clamping device

By designing a clamping device including a driving member and several pairs of clamping members, the problems of many parts, cumbersome assembly and high cost in the prior art are solved, and the clamping effect with simple structure and low cost is achieved.

CN222537442UActive Publication Date: 2025-02-28MAIDER MEDICAL IND EQUIP
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Patent Information

Application Number
CN202420547567.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-20
Publication Date
2025-02-28
Estimated Expiration
2034-03-20

AI Technical Summary

Technical Problem

The clamping device in the prior art has many parts, cumbersome assembly and high cost.

Method used

A clamping device is designed including a driving member and several pairs of clamping members. The driving member can drive any opposite two clamping members to be close to or away from each other. Each clamping member has a first clamping part and a second clamping part arranged at intervals. The clamping member is an integrated molded structure, with a compact structure and a reduced number of parts.

Benefits of technology

The clamping device has a simple structure, fewer parts and lower cost, while improving the structural stability and service life of the clamping parts.

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Abstract

The utility model provides a clamping device which comprises a driving part and a plurality of clamping parts arranged in pairs, the driving part can drive any two opposite clamping parts to be close to or far away from each other, each clamping part is provided with a first clamping part and a second clamping part which are arranged at intervals, the two first clamping parts of the same pair of clamping parts are oppositely arranged, and the second clamping parts of the same pair of clamping parts are oppositely arranged. The two second clamping parts of the same pair of clamping pieces are oppositely arranged, and the two first clamping parts and the two second clamping parts of the same pair of clamping pieces can clamp the two ends of materials correspondingly. By means of the scheme, the problems that in the prior art, a clamping device is large in part number and high in cost can be solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping device. Background Art

[0002] Medical devices are key equipment in the modern equipment manufacturing industry, and high speed, compounding, and intelligence are their main development directions. The assembly of medical catheters is also a common medical device that requires technological innovation and optimization.

[0003] In the process of using medical catheters, the catheter is usually clamped by a clamping device and assembled. The existing clamping device usually includes a clamping finger module, a first driving module and a second driving module. The clamping finger module includes two clamping finger assemblies arranged opposite to each other along a first direction, each clamping finger assembly includes two clamping fingers arranged opposite to each other, and the two clamping fingers are arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction. The first driving module is driven and connected to the two clamping fingers of one group of the clamping finger assemblies so that the two clamping fingers clamp one end of the catheter; the second driving module is driven and connected to the two clamping fingers of the other group of the clamping assemblies so that the two clamping fingers clamp the other end of the catheter.

[0004] However, the above solution has many parts, is complicated to assemble, and is costly. Utility Model Content

[0005] The utility model provides a clamping device to solve the problem that the clamping device in the prior art has many parts and components and is high in cost.

[0006] The utility model provides a clamping device, comprising a driving member and a plurality of clamping members arranged in pairs, wherein the driving member can drive any two opposite clamping members to move closer to or farther from each other, each clamping member is provided with a first clamping portion and a second clamping portion arranged at intervals, the two first clamping portions of the same pair of clamping members are arranged opposite to each other, the two second clamping portions of the same pair of clamping members are arranged opposite to each other, and the two first clamping portions and the two second clamping portions of the same pair of clamping members can clamp the two ends of a material respectively.

[0007] Furthermore, the clamping piece is an integrally formed structure, which can ensure the structural stability of the clamping piece, ensure the service life of the clamping piece, and improve the convenience of processing the clamping piece.

[0008] Furthermore, the clamping member further comprises a connecting portion, the first clamping portion and the second clamping portion are respectively located at two ends of the connecting portion, the first clamping portion and the second clamping portion are respectively located on the same side of the connecting portion, and the first clamping portion and the second clamping portion respectively have an angle with the connecting portion. Such an arrangement can facilitate the clamping of the material to be clamped by the first clamping portion and the second clamping portion, and improve the smoothness and stability of the clamping process.

[0009] Furthermore, the first clamping part and the second clamping part are respectively perpendicular to the connecting part. With such arrangement, the structural design is reasonable and the compactness of the structure of the clamping part can be ensured.

[0010] Furthermore, the same pair of clamping members includes a first clamping member and a second clamping member, and the driving member drives a plurality of first clamping members to move synchronously, and / or the driving member drives a plurality of second clamping members to move synchronously. Such an arrangement can improve the smoothness of the synchronous movement of a plurality of first clamping members, or can improve the smoothness of the synchronous movement of a plurality of second clamping members. Moreover, the above arrangement can reduce the number of parts of the clamping device as much as possible, and further reduce the cost of the clamping device.

[0011] Furthermore, the clamping device further comprises: a first transmission part, on which a plurality of first clamping members are respectively arranged; a second transmission part, on which a plurality of second clamping members are respectively arranged; wherein the driving member is drivingly connected to one of the first transmission part and the second transmission part, so as to make the plurality of first clamping members move synchronously, and / or make the plurality of second clamping members move synchronously. The setting of the first transmission part can ensure the synchronous movement of the plurality of first clamping members; the setting of the plurality of second transmission parts can ensure the synchronous movement of the plurality of second clamping members.

[0012] Furthermore, the driving member includes a first driving end and a second driving end, the clamping device includes a first transmission part and a second transmission part, a plurality of first clamping members are arranged on the first transmission part, the first driving end is drivingly connected to the first transmission part so that the plurality of first clamping members move synchronously, and the second driving end is drivingly connected to the second transmission part so that the plurality of second clamping members move synchronously. Such an arrangement can ensure that the plurality of first clamping members move synchronously, and at the same time, the plurality of second clamping members move synchronously. It is ensured that the plurality of groups of clamping members can perform clamping operations synchronously, thereby improving the clamping efficiency of the clamped members.

[0013] Furthermore, the first transmission part includes a first transmission rod, and a plurality of first clamping members are arranged on the first transmission rod at intervals along the length direction of the first transmission rod; the second transmission part includes a second transmission rod, the second transmission rod and the first transmission rod are parallel to each other, and a plurality of second clamping members are arranged on the second transmission rod at intervals along the length direction of the second transmission rod, the first clamping member and the second clamping member are alternately distributed along the length direction of the first transmission rod, and the first driving ends are close to or away from each other, so that the first transmission rod and the second transmission rod move in opposite directions. With such a configuration, the structural design is reasonable, and it can ensure that multiple groups of clamping members are spaced and distributed along the same direction, thereby improving the convenience of clamping multiple members to be clamped.

[0014] Furthermore, the clamping device further comprises: a positioning part, which is arranged on at least one clamping member, and the positioning part cooperates with a plurality of pairs of clamping members to form a plurality of clamping spaces, and the positioning part cooperates with a plurality of pairs of clamping members to limit the position of the material in the corresponding clamping space. The arrangement of the positioning part can improve the stability of the member to be clamped during the clamping process, and the above arrangement can limit the position of the member to be clamped in the clamping space, and improve the position accuracy of the member to be clamped when the material is dropped.

[0015] Further, the positioning part includes: a first positioning part, located on a side of the first clamping part of the plurality of pairs of clamping members away from the second clamping part; and / or, a second positioning part, located on a side of the second clamping part of the plurality of pairs of clamping members away from the first clamping part; and / or, a third positioning part, which is inserted into the plurality of pairs of clamping members and located between the first clamping part and the second clamping part of the plurality of pairs of clamping members. Such a configuration has a simple structure and can ensure the compactness of the structure of the clamping device.

[0016] According to the technical solution of the utility model, each pair of clamping members includes two clamping members arranged opposite to each other. When the catheter needs to be clamped, the catheter to be clamped is placed between the two clamping members of the same pair. The driving member drives the two clamping members of the same pair to approach each other. The two first clamping parts and the two second clamping parts of the two clamping members of the same pair clamp the two ends of the catheter respectively to complete the clamping of the catheter. In the traditional technical solution, the clamping device usually includes a clamping finger module, a first driving module and a second driving module. The clamping finger module includes two clamping finger assemblies arranged opposite to each other along a first direction, each clamping finger assembly includes two clamping fingers arranged opposite to each other, and the two clamping fingers are arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction. The first driving module is connected to the two clamping fingers of one group of the clamping finger assemblies so that the two clamping fingers clamp one end of the catheter; the second driving module is connected to the two clamping fingers of the other group of the clamping assemblies so that the two clamping fingers clamp the other end of the catheter. Compared with the traditional technical solution, the setting of this solution has a simple structure, fewer parts and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the clamping device provided by an embodiment of the utility model is shown;

[0019] Figure 2 A schematic structural diagram of a first clamping member provided in an embodiment of the utility model is shown;

[0020] Figure 3 A schematic diagram of the structure of the second clamping member provided in an embodiment of the utility model is shown;

[0021] Figure 4 A top view of a clamping device provided by an embodiment of the utility model is shown;

[0022] Figure 5 A front view of a clamping device provided by an embodiment of the utility model is shown;

[0023] Figure 6 A bottom view of the clamping device provided by an embodiment of the utility model is shown;

[0024] Figure 7 A side view of the clamping device provided by an embodiment of the utility model is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Driving parts;

[0027] 101, first driving end; 102, second driving end;

[0028] 201, first clamping portion; 202, second clamping portion; 203, connecting portion;

[0029] 21. A first clamping member;

[0030] 22. A second clamping member;

[0031] 31. First transmission unit;

[0032] 32. Second transmission unit;

[0033] 41. a first positioning portion;

[0034] 42. a second positioning portion;

[0035] 43. A third positioning portion. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figures 1 to 3As shown, an embodiment of the utility model provides a clamping device, including a driving member 10 and a plurality of clamping members arranged in pairs, the driving member 10 can drive any two opposite clamping members to move closer to or away from each other, each clamping member has a first clamping portion 201 and a second clamping portion 202 arranged at intervals, the two first clamping portions 201 of the same pair of clamping members are arranged opposite to each other, the two second clamping portions 202 of the same pair of clamping members are arranged opposite to each other, and the two first clamping portions 201 and the two second clamping portions 202 of the same pair of clamping members can respectively clamp the two ends of the material.

[0038] According to the technical solution of the utility model, each pair of clamping members includes two clamping members arranged opposite to each other. When the catheter needs to be clamped, the catheter to be clamped is placed between the two clamping members of the same pair. The driving member 10 drives the two clamping members of the same pair to approach each other. The two first clamping parts 201 and the two second clamping parts 202 of the two clamping members of the same pair clamp the two ends of the catheter respectively to complete the clamping of the catheter. In the traditional technical solution, the clamping device usually includes a clamping finger module, a first driving module and a second driving module. The clamping finger module includes two clamping finger assemblies arranged opposite to each other along a first direction, each clamping finger assembly includes two clamping fingers arranged opposite to each other, and the two clamping fingers are arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction. The first driving module is connected to the two clamping fingers of one group of the clamping finger assemblies so that the two clamping fingers clamp one end of the catheter; the second driving module is connected to the two clamping fingers of the other group of the clamping assembly so that the two clamping fingers clamp the other end of the catheter. Compared with the traditional technical solution, the setting of this solution has a simple structure, fewer parts and lower cost.

[0039] In the embodiment of this solution, the clamping member is an integrally formed structure, which is convenient for processing the clamping member, and can ensure the structural strength of the clamping member and increase the service life of the clamping member.

[0040] Furthermore, the clamping member also includes a connecting portion 203, the first clamping portion 201 and the second clamping portion 202 are respectively located at two ends of the connecting portion 203, the first clamping portion 201 and the second clamping portion 202 are located on the same side of the connecting portion 203, and the first clamping portion 201 and the second clamping portion 202 have an angle with the connecting portion 203 respectively.

[0041] In this embodiment, the connecting portion 203, the first clamping portion 201 and the second clamping portion 202 are rod-shaped structures, and the cross-sections of the first clamping portion 201 and the second clamping portion 202 are rectangular structures. This arrangement can further improve the convenience of processing the clamping member and improve the firmness of clamping the catheter. The first clamping portion 201 and the second clamping portion 202 have an angle with the connecting portion 203, respectively. This arrangement facilitates the clamping of the end of the catheter.

[0042] In this embodiment, the first clamping portion 201 and the second clamping portion 202 have the same structure, and the first clamping portion 201 and the second clamping portion 202 are symmetrically arranged on both sides of the connecting portion 203 with respect to the length direction of the connecting portion 203. In this way, when assembling the clamping device, it is not necessary to consider the front and back of the clamping piece, which facilitates the assembly of the clamping device.

[0043] This solution does not limit the angle between the first clamping portion 201 and the connecting portion 203 . In this embodiment, the first clamping portion 201 and the second clamping portion 202 are perpendicular to the connecting portion 203 .

[0044] Specifically, the same pair of clamping members includes a first clamping member 21 and a second clamping member 22 , and the driving member 10 drives a plurality of first clamping members 21 to move synchronously, and / or the driving member 10 drives a plurality of second clamping members 22 to move synchronously.

[0045] In some embodiments of the present solution, the driving member 10 drives each pair of clamping members to work independently of each other.

[0046] In other embodiments of the present solution, at least two pairs of clamping members of the driving member 10 work synchronously.

[0047] In the embodiment of this solution, a plurality of pairs of clamping members move synchronously, that is, the driving member 10 drives a plurality of first clamping members 21 to move synchronously, and the driving member 10 drives a plurality of second clamping members 22 to move synchronously.

[0048] like Figure 1 and Figure 4 As shown, further, the clamping device also includes a first transmission part 31 and a second transmission part 32, the first transmission part 31 includes a first transmission rod, the second transmission part 32 includes a second transmission rod, and the first transmission rod and the second transmission rod are parallel to each other. A plurality of first clamping members 21 are arranged on the first transmission rod at intervals along the length direction of the first transmission rod, a plurality of second clamping members 22 are arranged on the second transmission rod at intervals along the length direction of the second transmission rod, the first clamping members 21 and the second clamping members 22 are alternately distributed along the same straight line direction, the first clamping parts 201 of the plurality of first clamping members 21 and the first clamping parts 201 of the plurality of second clamping members 22 are located on the same straight line, and the second clamping parts 202 of the plurality of second clamping members 22 and the second clamping parts 202 of the plurality of second clamping members 22 are located on the same straight line.

[0049] Among them, the driving member 10 includes a first driving end 101 and a second driving end 102, the first driving end 101 and the second driving end 102 move synchronously in opposite directions, the first driving end 101 is drivingly connected to the first transmission rod to enable multiple first clamping members 21 to move synchronously, and the second driving end 102 is drivingly connected to the second transmission rod to enable multiple second clamping members 22 to move synchronously.

[0050] Furthermore, the clamping device further includes a positioning portion, which is arranged on at least one clamping member, and the positioning portion cooperates with a plurality of pairs of clamping members to form a plurality of clamping spaces, and the positioning portion cooperates with a plurality of pairs of clamping members to limit the position of the material in the corresponding clamping space. When the clamping device clamps the hose, the hose is prone to curling. The arrangement of the positioning portion in this solution can play a certain role in limiting the deformation of the hose, reduce the warping of the hose, and improve the stability of the clamping device in clamping the catheter.

[0051] like Figures 5 to 7 As shown, in the embodiment of the present scheme, the positioning portion includes a first positioning portion 41, and the first positioning portion 41 is located on the side of the first clamping portion 201 of the plurality of pairs of clamping members away from the second clamping portion 202. The first positioning portion 41 includes a first positioning plate, and the first positioning plate is fixedly arranged on the side of the first clamping portion 201 of at least one first clamping member 21 away from the second clamping portion 202. The length direction of the first positioning plate is the same as the distribution direction of the first clamping member 21 to the second clamping member 22, and the two ends of the first positioning plate extend to the positions of the two clamping members at the end, respectively. With such a configuration, the first positioning plate can position the catheters clamped by all the clamping members.

[0052] In the embodiment of the present scheme, the positioning part also includes a second positioning part 42, and the second positioning part 42 is located on the side of the second clamping part 202 of the plurality of pairs of clamping members away from the first clamping part 201. The second positioning part 42 includes a second positioning plate, and the second positioning plate is fixedly arranged on the side of the second clamping part 202 of at least one clamping member away from the first clamping part 201. The length direction of the second positioning plate is the same as the distribution direction of the first clamping member 21 to the second clamping member 22. The two ends of the second positioning plate extend to the positions of the two clamping members at the end, respectively. The second positioning plate is parallel to the first positioning plate, and the height of the second positioning plate is the same as the height of the first positioning plate. With such a configuration, the second positioning plate can position the catheters clamped by all the clamping members.

[0053] Furthermore, the positioning portion also includes a third positioning portion 43, which is inserted into the plurality of pairs of clamping members and is located between the first clamping portion 201 and the second clamping portion 202 of the plurality of pairs of clamping members. The third positioning portion 43 is parallel to the first positioning plate, and both ends of the third positioning portion 43 extend to the positions of the two clamping members at the end portions, respectively. The length direction of the third positioning portion is the same as the length direction of the first positioning plate, and the longitudinal section of the third positioning portion is a door-shaped frame. The third positioning portion includes two parallel side plates and a connecting plate, and the connecting plate of the third positioning portion is connected to the connecting portion 203 of at least one clamping member, and the two side plates of the third positioning portion 43 are respectively perpendicular to the connecting portion 203.

[0054] The height of the third positioning portion is the same as that of the first positioning plate. With such arrangement, the third positioning portion can position all the conduits clamped by the clamping members.

[0055] In this solution, the first positioning portion 41, the second positioning portion 42 and the third positioning portion 43 are detachably connected to the clamping member, respectively. This arrangement makes it easy to replace the first positioning portion 41, the second positioning portion 42 and the third positioning portion 43, and to adjust the height of the first positioning portion 41, the second positioning portion 42 and the third positioning portion 43, and to adjust the height size of the clamping space, so as to facilitate clamping of catheters with different diameters.

[0056] In this embodiment, the first positioning portion 41, the second positioning portion 42 and the third positioning portion 43 are connected to the clamping member through fasteners, respectively. This arrangement has a simple structure and is easy to assemble.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0062] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A clamping device, comprising a driving member (10) and a plurality of clamping members arranged in pairs, wherein the driving member (10) can drive any two opposite clamping members to move closer to or farther from each other, and wherein: Each of the clamping members has a first clamping portion (201) and a second clamping portion (202) which are arranged at intervals; the two first clamping portions (201) of the same pair of clamping members are arranged opposite to each other; the two second clamping portions (202) of the same pair of clamping members are arranged opposite to each other; the two first clamping portions (201) and the two second clamping portions (202) of the same pair of clamping members can respectively clamp two ends of a material.

2. The clamping device according to claim 1, characterized in that: The clamping piece is an integrally formed structure.

3. The clamping device according to claim 1, characterized in that: The clamping member further comprises a connecting portion (203), the first clamping portion (201) and the second clamping portion (202) being respectively located at two ends of the connecting portion (203), the first clamping portion (201) and the second clamping portion (202) being located on the same side of the connecting portion (203), and the first clamping portion (201) and the second clamping portion (202) respectively having an included angle with the connecting portion (203).

4. The clamping device according to claim 3, characterized in that: The first clamping portion (201) and the second clamping portion (202) are respectively perpendicular to the connecting portion (203).

5. The clamping device according to claim 4, characterized in that: The same pair of clamping members comprises a first clamping member (21) and a second clamping member (22); the driving member (10) drives a plurality of first clamping members (21) to move synchronously, and / or the driving member (10) drives a plurality of second clamping members (22) to move synchronously.

6. The clamping device according to claim 5, characterized in that: The clamping device also includes: A first transmission part (31), wherein a plurality of the first clamping members (21) are respectively arranged on the first transmission part (31); A second transmission part (32), wherein a plurality of the second clamping members (22) are respectively arranged on the second transmission part (32); Wherein, the driving member (10) is drivingly connected to one of the first transmission part (31) and the second transmission part (32) so as to enable a plurality of the first clamping members (21) to move synchronously and / or to enable a plurality of the second clamping members (22) to move synchronously.

7. The clamping device according to claim 6, characterized in that: The driving member (10) comprises a first driving end (101) and a second driving end (102); the clamping device comprises the first transmission part (31) and the second transmission part (32); a plurality of the first clamping members (21) are arranged on the first transmission part (31); the first driving end (101) is drivingly connected to the first transmission part (31) so that the plurality of the first clamping members (21) move synchronously; the second driving end (102) is drivingly connected to the second transmission part (32) so that the plurality of the second clamping members (22) move synchronously.

8. The clamping device according to claim 7, characterized in that: The first transmission part (31) comprises a first transmission rod, and a plurality of first clamping members (21) are arranged on the first transmission rod at intervals along the length direction of the first transmission rod; The second transmission part (32) comprises a second transmission rod, the second transmission rod and the first transmission rod are parallel to each other, a plurality of second clamping members (22) are arranged on the second transmission rod at intervals along the length direction of the second transmission rod, the first clamping member (21) and the second clamping member (22) are alternately distributed along the length direction of the first transmission rod, and the first driving ends (101) are moved closer to or farther from each other so that the first transmission rod and the second transmission rod move in opposite directions.

9. The clamping device according to claim 1, characterized in that: The clamping device also includes: The positioning part is arranged on at least one of the clamping members, and the positioning part cooperates with several pairs of the clamping members to form several clamping spaces, and the positioning part cooperates with several pairs of the clamping members to limit the position of the material in the corresponding clamping space.

10. The clamping device according to claim 9, characterized in that: The positioning portion comprises: The first positioning portion (41) is located on a side of the first clamping portion (201) of the plurality of pairs of clamping members away from the second clamping portion (202); and / or, The second positioning portion (42) is located on a side of the second clamping portions (202) of the plurality of pairs of clamping members away from the first clamping portions (201); and / or, The third positioning portion (43) is inserted into the plurality of pairs of clamping members and is located between the first clamping portion (201) and the second clamping portion (202) of the plurality of pairs of clamping members.