CN214724296U - Clamping device - Google Patents

Abstract

The embodiment of the utility model discloses clamping device relates to precision component operating tool technical field, and this clamping device includes: the first clamping structure is provided with a channel penetrating through the first clamping structure; the sleeve is connected with the first side of the first clamping structure and communicated with the channel; the operating rod comprises a big head end, a straight rod section and a fixed section which are connected in sequence, wherein the big head end is stopped outside one end of the sleeve far away from the first clamping structure, the straight rod section is arranged in the sleeve, and the fixed section is matched with the channel and penetrates through the channel; the second clamping structure is connected with the fixed section and is arranged on the second side of the first clamping structure; the operating rod reciprocates within a set length range along the axial direction of the sleeve to control the distance between the first clamping structure and the second clamping structure. The embodiment of the utility model provides a can effectively improve the precision component and take the structural damage that the in-process instrument caused to the component, avoid the sensitive part of component, enlarge application scope.

Description

Clamping device

Technical Field

The utility model relates to a precision component operation instrument technical field particularly, relates to a clamping device.

Background

In the 3C electronics industry, such as electronics, microelectronics, mobile phones, computers, watches, etc., the activities of production, installation, transfer, etc. of the micro-sensitive elements all need to have certain flexibility. In the related art, the requirements of the installation process of the micro-sensitive element on the conditions of precision, antistatic interference and the like are strict, and the installation process is limited by an operation space, so that an operator usually uses tools such as antistatic tweezers, suction pens and the like to operate the micro-sensitive element.

The anti-static tweezers are used for taking and placing from one side of the inner side, and the micro-sensitive element is inclined in the taking and placing process. In some cases, the micro-sensitive element is placed in a narrow space, so that the moving space of the anti-static tweezers is limited, and the anti-static tweezers cannot be used for clamping. The surface of the micro-sensitive element is required to be smooth by using a suction pen, and the micro-sensitive element which does not reach the smoothness requirement cannot be operated by using the suction pen.

During the operation process of using the anti-static tweezers or the suction pen, the micro-sensitive element may be damaged due to slipping, or due to too large clamping force, too large adsorption force and the like, so that the performance of the final product is affected.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to solve the above problems in the prior art, and to provide a clamping device, which avoids the sensitive portion during the clamping of the component, thereby improving the clamping quality and efficiency of the component.

An embodiment of the utility model provides a clamping device, include: the first clamping structure is provided with a channel penetrating through the first clamping structure; the sleeve is connected with the first side of the first clamping structure and communicated with the channel; the operating rod comprises a big head end, a straight rod section and a fixed section which are connected in sequence, wherein the big head end is stopped outside one end of the sleeve far away from the first clamping structure, the straight rod section is arranged in the sleeve, and the fixed section is matched with the channel and penetrates through the channel; the second clamping structure is connected with the fixed section and is arranged on the second side of the first clamping structure; the operating rod reciprocates within a set length range along the axial direction of the sleeve to control the distance between the first clamping structure and the second clamping structure.

In any of the above schemes, preferably, a shoulder is formed at the joint of the fixed section and the straight rod section, and the shoulder is positioned at the first side of the first clamping structure; an elastic piece is sleeved on the fixing section between the blocking shoulder and the first clamping structure, one end of the elastic piece is abutted against the blocking shoulder, and the other end of the elastic piece is connected with the first clamping structure.

In any of the above aspects, preferably, the first clamping structure is detachably connected to the casing; the first side of the first clamping structure is connected with an assembling block, the assembling block is provided with a positioning groove, and the bottom of the positioning groove is communicated with the channel; the sleeve pipe is close to the one end of first clamping structure, pegs graft and is fixed a position in the constant head tank.

Preferred is among any above-mentioned scheme, and the sleeve pipe is provided with the external screw thread with the one end that the constant head tank is connected, and the constant head tank is provided with the internal thread, and sleeve pipe and constant head tank screw-thread fit are connected.

In any of the above aspects, preferably, the fixed segment is detachably connected to the second clamping structure.

In the above scheme, it is further preferable that the first clamping structure includes a first clamping block, a first linear sliding groove is disposed in the first clamping block, and the first clamping structure is slidably connected to the upper clamping block through two ends of the first linear sliding groove respectively; the second clamping structure comprises a second clamping block, a second linear sliding groove is arranged in the second clamping block, and the second clamping block is connected with a lower clamping block 8 through two ends of the second linear rail linear sliding groove in a sliding mode; the first linear sliding groove and the second linear sliding groove are arranged in parallel.

In any one of the above aspects, preferably, the upper clamping block includes a first sliding portion, a first connecting portion, and a first clamping portion, which are connected in sequence; the lower clamping block comprises a second sliding part and a second clamping part protruding out of the second sliding part; the first clamping part and the second clamping part are arranged in parallel; the distance between the first sliding part and the second clamping part is greater than the distance between the first clamping part and the second clamping part.

In any of the above schemes, preferably, limiting holes are respectively formed through the first clamping block and the second clamping block; the limiting hole is communicated with the outer side of the first clamping block and the first linear sliding groove, or communicated with the outer side of the second clamping block and the second linear sliding groove; and a fastener is arranged in match with the limiting hole.

Based on the foregoing the utility model provides a clamping device presss from both sides and takes the mesopore quick component in-process a little, through the interval between first clamping structure and the second clamping structure that the adjustment is parallel to each other, can realize pressing from both sides the component of different thickness and get to the requirement of component surface smoothness has been reduced. Through setting up action bars and sleeve pipe into the first clamping structure of perpendicular to and second clamping structure, can avoid the structural damage that drops and arouse that causes the component slope in pressing from both sides the component in-process, reduce the component and damage the possibility, improve the component and press from both sides and get efficiency.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of an embodiment of the clamping device of the present invention;

FIG. 2 is a schematic structural view of section A-A;

FIG. 3 is an exploded view of another embodiment of the clamping device of the present invention;

FIG. 4 is a schematic structural view of an embodiment of a first clamping structure;

FIG. 5 is a schematic structural view of another embodiment of the first clamping structure;

FIG. 6 is a schematic structural view of an embodiment of a second clamping structure;

FIG. 7 is a schematic structural view of another embodiment of a second clamping structure;

FIG. 8 is a schematic structural diagram of an embodiment of a device.

Reference numerals: 1-a first clamping structure; 11-a channel; 12-a first clamp block; 121-a first linear runner; 122-a limiting hole; 2-a sleeve; 3-operating the lever; 31-big head end; 32-straight pole section; 321-a shoulder; 33-a fixed segment; 4-a second clamping structure; 41-a second clamping block; 411-a second linear runner; 5-an elastic member; 6-assembling blocks; 61-a positioning groove; 7-mounting a clamping block; 71-a first sliding part; 72-a first connection; 73-a first clamping section; 8-lower clamping block; 81-a second sliding part; 82-a second clamping portion; 9-fastening piece.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the related art, in the 3C electronics industry such as electronics, microelectronics, mobile phones, computers, watches, and the like, the production, installation, transfer, and movement of the micro-sensitive element all require certain flexibility. The device shown in fig. 8 is required to be taken and placed while avoiding the frame with the electronic devices at the periphery, so that the device needs to be taken and placed from the middle of the device as much as possible. The component needing to be inclined is clamped by using tweezers, and the suction pen has higher requirements on the flatness of the surface of the component.

The embodiment of the utility model provides a aim at solving the technical problem who exists among the above-mentioned correlation technique, provide a clamping device, stretch into and press from both sides the component from the middle vacancy of component, reduce the requirement to the component roughness, avoid pressing from both sides the in-process component slope and lead to dropping the structural damage who forms.

Fig. 1 is a schematic structural view of an embodiment of the clamping device of the present invention; FIG. 2 is a schematic structural view of section A-A; fig. 3 is an exploded schematic view of another embodiment of the clamping device of the present invention. As shown in fig. 1 to 3, a clamping device according to an embodiment of the present invention may include a first clamping structure 1, a sleeve 2, an operating rod 3, and a second clamping structure 4. Wherein, the first clamping structure 1 can be provided with a channel 11 through the first clamping structure 1; the sleeve 2 may be connected to a first side of the first clamping structure 1 and is in communication with the channel 11. The operating rod 3 may include a large end 31, a straight rod section 32, and a fixing section 33 connected in sequence, wherein the large end 31 is stopped outside an end of the sleeve 2 away from the first clamping structure 1, the straight rod section 32 is disposed in the sleeve 2, and the fixing section 33 is matched with the channel 11 and penetrates through the channel 11. The second clamping structure 4 can be connected with the fixed section 33 and placed on the second side of the first clamping structure 1; the operating rod 3 reciprocates along the axial direction of the casing 2 within a set length range to control the distance between the first clamping structure 1 and the second clamping structure 4.

In the embodiment, the distance between the first clamping structure 1 and the second clamping structure 4 can be adjusted by matching the operating rod 3 with the sleeve 2. The two opposite surfaces of the first clamping mechanism 1 and the second clamping mechanism 4 respectively contact the two opposite surfaces of the element, and the element is forced to clamp in the direction vertical to the element. After the first clamping structure 1 and the second clamping structure 4 cooperate to clamp the component, the component can be moved in position or the like by holding the sleeve 2.

The purpose of the through hole 11 provided in the first clamping structure 1 is that the operating rod 3 can pass through the first clamping structure 1 from the first side of the first clamping structure 1 through the through hole 11, and then the fixing section 33 of the operating rod 3 can be connected to the second clamping structure 4 from the second side of the first clamping structure 1. The fixing section 33 can reciprocate axially along the operating rod 3 in the through hole 11, and then drives the second clamping structure 4 to reciprocate axially along the operating rod 3.

As can be understood by referring to fig. 1-3 and 8, the clamping device of the present embodiment can adjust the distance between the first clamping structure 1 and the second clamping structure 4 by adjusting the operating rod 3, and is further suitable for clamping components with different thicknesses as shown in fig. 8. If the component is thicker, the large head end 31 of the operating rod 3 can be pressed a longer distance towards the first clamping structure 1 and the second clamping structure 4 before the clamping device of the embodiment is inserted into the component hole, so that the fixing section 33 of the operating rod 3 can drive the second clamping structure 4 to be away from the first clamping structure 1 for a longer distance, and the distance is greater than the component thickness.

After the distance between the first clamping structure 1 and the second clamping structure 4 is adjusted, the second clamping structure 4 is inserted into the element middle hole, and when the element is arranged in the space between the first clamping structure 1 and the second clamping structure 4, the whole clamping device of the embodiment is rotated along the circumferential direction of the operating rod 3; the operating rod 3 moves towards the direction far away from the first clamping structure 1 and the second clamping structure 4, and the first clamping structure 1 and the second clamping structure 4 can be matched with each other along the axial direction of the operating rod 3 to clamp elements.

With reference to fig. 1-3 and 8, the clamping device of this embodiment can clamp two positions of a hole in a component, and during clamping the component by using the clamping device of this embodiment, the component can be clamped smoothly, so as to avoid the component from falling off from the clamping device due to the component inclination, and improve the structural safety of the component. In addition, in order to prevent the sensitive portion on the device from contacting the first clamping structure 1 and/or the second clamping structure 4 of the present embodiment, an isolation measure such as an insulating tape may be provided between the first clamping structure 1 and/or the second clamping structure 4 and the device, so as to further reduce the structural damage of the device caused by the clamping device of the present embodiment.

In this embodiment, the sleeve 2 may be detachably connected to the first clamping structure 1 or integrally formed, the inner cavity of the sleeve 2 is communicated with the channel 11, and the operating rod conveniently disposed in the inner cavity of the sleeve 2 may pass through the channel 11 to be connected to the second clamping structure 4. In the present embodiment, the sleeve 2 is disposed on the first clamping structure 1, so that on one hand, an operator can conveniently hold the clamping device of the present embodiment, and on the other hand, the moving direction of the operating rod 3 can be limited. In one example, the casing 2 may be a straight pipe, and the central axis of the casing 2 may be perpendicular to the first and second clamping structures 1 and 4, so that the distance between the first and second clamping structures 1 and 4 can be adjusted to a set value at the shortest distance of movement of the operating rod 3.

The size of stub end 31 can be greater than sleeve pipe 2's external diameter size, makes things convenient for operating personnel to operate action bars 3, and can effectively avoid action bars 3 to break away from first clamping structure 1 along 2 axial follow through-holes 11 of sleeve pipe, has reduced operating personnel's the operation degree of difficulty to this embodiment clamping device, and the one hand both can realize the adjustment to interval between first clamping structure 1 and the second clamping structure 4.

In this embodiment, the fixing section 33 may be a rod-shaped structure including at least one plane, and the plane of the fixing section 33 is matched with the channel 11, so that the operation rod 3 can be prevented from rotating along the circumferential direction of the operation rod 3. Through the design, the relative position deflection of the first clamping structure 1 and the second clamping structure 4 can be avoided, and the stability of the element clamped by the first clamping structure 1 and the second clamping structure 4 in a matching manner is improved.

Further, in some embodiments, the fixed segment 33 may be detachably connected with the second clamp structure 4. With the gripping device of the present embodiment, the operating rod 3 of the respective length fixing section 33 can be replaced before the gripping operation is performed for the elements of different thicknesses. For example, if the thickness of the component is small, the component can be clamped by using the operating rod 3 of the fixing section 33 with a small length; if the thickness of the element is larger, the operation rod 3 with the longer length of the fixed section 33 can be replaced to carry out the clamping operation on the element. When the clamping operation is performed on the elements with different thicknesses, the operation rod 3 is replaced, so that the corresponding elements can be clamped, and the production cost is reduced.

In some embodiments, the connection between the fixed segment 33 and the straight rod segment 32 forms a shoulder 321, and the shoulder 321 is located on the first side of the first clamping structure 1; the fixing section 33 between the shoulder 321 and the first clamping structure 1 is sleeved with an elastic element 5, one end of the elastic element 5 abuts against the shoulder 321, and the other end of the elastic element 5 is connected with the first clamping structure 1.

The elastic element 5 of the present embodiment is bound in the sleeve 2 through the shoulder 321 and the first clamping structure 1, and the operating rod 3 is limited by the big head end 31 to slide out of the through hole 11 along the sleeve 2; by connecting the second clamping mechanism 4 to the fixed section 33, the operating rod 3 is restricted from sliding out of the end of the casing 2 remote from the first clamping mechanism 1. Through the above design, the elastic member 5 can be stably placed between the stopping shoulder 321 and the first clamping structure 1. In the process of pressing the big head end 31, the elastic piece 5 generates shrinkage deformation, the elastic potential energy is increased, and the distance between the first clamping structure 1 and the second clamping structure 4 is gradually increased in the process; after the position of the clamping element is determined, the large head end 31 is loosened, the elastic piece 5 releases elastic potential energy, deformation is generated, the blocking shoulder 321 moves towards the direction far away from the first clamping structure 1, and the distance between the first clamping structure 1 and the second clamping structure 4 is gradually reduced to the value same as the thickness of the element in the process. In one example, the elastic member 5 may be one of a compression spring or an elastic rubber sleeve.

Elastic component 5 is established through the cover on fixed segment 33 to this embodiment, can avoid operating personnel manual operation to stir big head end 31 and drive the first fixture 1 clamping element of second fixture 4 cooperation, and the simplified operation process has improved work efficiency.

In some embodiments, the first clamp structure 1 is removably connected to the casing 2; the first side of the first clamping structure 1 is connected with an assembling block 6, the assembling block 6 is provided with a positioning groove 61, and the bottom of the positioning groove 61 is communicated with the channel 11; the end of the sleeve 2 close to the first clamping structure 1 is inserted and positioned in the positioning groove 61.

In this embodiment, the assembling block 6 may be fixedly connected to the first clamping structure 1, or detachably connected to the first clamping structure 1, for example, by bonding, clamping, or screwing. The sleeve 2 is connected to the first clamping arrangement 1 by means of the set of blocks 6. The assembling block 6 can be provided with a positioning groove 61 with the bottom communicated with the through hole 11. The bottom opening of the positioning groove 61 may have the same size as the through hole 11 or larger than the through hole 11.

Sleeve pipe 2 can be in constant head tank 61 department can dismantle the above-mentioned piece 6 of connecting of assembling, and specific can be, the one end that sleeve pipe 2 and constant head tank 61 are connected is provided with the external screw thread, and constant head tank 61 is provided with the internal thread, and sleeve pipe 2 and constant head tank 61 screw-thread fit are connected. In another example, a clamping groove can be further formed around the outer side of the sleeve 2, a buckle is installed on the outer side of the positioning groove 61, and the assembling block 6 is detachably connected with the sleeve 2 through the matching of the clamping groove and the buckle. The connection can also be made in other ways that occur to those skilled in the art, and the embodiments are not listed here. The present embodiment can be adjusted and used in cooperation with the operation rod 3 to determine the maximum distance between the first clamping structure 1 and the second clamping structure 4 by detachably connecting the sleeve 2 and the assembling block 6.

FIG. 4 is a schematic structural view of an embodiment of a first clamping structure; FIG. 5 is a schematic structural view of another embodiment of the first clamping structure; FIG. 6 is a schematic structural view of an embodiment of a second clamping structure;

FIG. 7 is a schematic structural diagram of another embodiment of the second clamping structure. As shown in fig. 1, 4 to 7, in some embodiments, the first clamping structure 1 may include a first clamping block 12, a first linear sliding slot 121 is disposed in the first clamping block 12, and the first clamping structure 1 is slidably connected to the upper clamping block 7 through two ends of the first linear sliding slot 121; the second clamping structure 4 comprises a second clamping block 41, a second linear sliding groove 411 is arranged in the second clamping block 41, and the second clamping block 41 is connected with a lower clamping block 8 through two ends of the second linear rail linear sliding groove 411 in a sliding manner; the first linear sliding slot 121 and the second linear sliding slot 411 are disposed in parallel.

In this embodiment, the first clamping mechanism 1 and the second clamping mechanism 4 movably extend in a direction perpendicular to the operating rod 3. The two upper clamping blocks 7 can lengthen the first clamping mechanism 1 in opposite directions along the first linear sliding groove 121. The two lower clamping blocks 8 can lengthen the second clamping mechanism 8 along the second linear sliding slot 411 towards the opposite direction. In this embodiment, the through hole 11 penetrates through the first clamping block 12, and a fixing groove for fixing the fixing section 33 penetrating through the through hole 11 is disposed on one side of the second clamping block 41 close to the first clamping block 12.

Further, with continued reference to fig. 4-7, in some embodiments, the upper clamping block 7 may include a first sliding portion 71, a first connecting portion 72, and a first clamping portion 73 connected in sequence; the lower clamp block 8 includes a second sliding portion 81 and a second clamp portion 82 protruding the second sliding portion 81; the first clamping portion 73 is arranged in parallel with the second clamping portion 82; the distance between the first sliding portion 71 and the second clamping portion 82 is greater than the distance between the first clamping portion 73 and the second clamping portion 82.

The first sliding portion 71, the first connecting portion 72 and the first clamping portion 73 in this embodiment may be different portions of the upper clamping block 7 that are integrally formed; the second clamping portion 82 of the second sliding portion 81 may be a different part of the lower clamping block 8 that is integrally formed. Here, the first sliding portion 71 may be disposed in parallel with the second sliding portion 81, and the first clamping portion 73 may be disposed in parallel with the second clamping portion 82. The second sliding portion 81 may extend from the bottom surface to form a second clamping portion 82 perpendicular to the operating rod 3, and the lower clamping block 8 may have an L-shaped structure as a whole. The first connecting portion 72 can be parallel to the side of the second sliding portion 81 and perpendicular to the first clamping portion 73 and the second clamping portion 82 for connecting the first sliding portion 71 and the first clamping portion 73. Through the design of the mode, under the state that the upper clamping block 7 is close to the lower clamping block 8, the distance between the first clamping part 73 and the second clamping part 82 is 0, so that the first clamping part 73 and the second clamping part 82 can clamp elements in the using process, and the clamping stability is improved.

The upper clamping block 7 can be fixed at a set position of the first clamping block 12, and the lower clamping block 8 can be fixed at a preset position of the second clamping block 41, in some embodiments, a limiting hole 122 can be respectively formed through the first clamping block 12 and the second clamping block 41; the limiting hole 122 communicates the outer side of the first clamping block 12 with the first linear sliding groove 121, or communicates the outer side of the second clamping block 41 with the second linear sliding groove 411; a fastening piece 9 is arranged in a matching manner with the limiting hole 122, and the fastening piece 9 is matched with the limiting hole 122 to fix the first sliding part 71 at the set position of the first linear sliding chute 121; the fastening member 9 is engaged with the limiting hole 122 to fix the second sliding portion 81 at the predetermined position of the second linear sliding slot 411. In this embodiment, the distance between the two upper clamping blocks 7 at the two ends of the first linear sliding groove 121 and the distance between the two lower clamping blocks 8 at the two ends of the second linear sliding groove 411 are adjusted by the cooperation of the fastening member 9 and the limiting hole 122, so as to be suitable for the components shown in fig. 8 with different central hole sizes, and expand the application range of the clamping device in this embodiment.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. A clamping device, comprising:

a first clamping structure (1) having a channel (11) extending through the first clamping structure (1);

the sleeve (2) is connected with the first side of the first clamping structure (1) and communicated with the channel (11);

the operating rod (3) comprises a big head end (31), a straight rod section (32) and a fixed section (33) which are sequentially connected, wherein the big head end (31) stops at one end of the sleeve (2) far away from the first clamping structure (1), the straight rod section (32) is arranged in the sleeve (2), and the fixed section (33) is matched with the channel (11) and penetrates through the channel (11);

the second clamping structure (4) is connected with the fixed section (33) and is arranged on the second side of the first clamping structure (1);

the operating rod (3) moves in a reciprocating mode within a set length range along the axial direction of the sleeve (2) to control the distance between the first clamping structure (1) and the second clamping structure (4).

2. Clamping device according to claim 1,

a retaining shoulder (321) is formed at the joint of the fixed section (33) and the straight rod section (32), and the retaining shoulder (321) is positioned on the first side of the first clamping structure (1);

keep off shoulder (321) with between first clamping structure (1) fixed section (33) goes up the cover and is equipped with elastic component (5), elastic component (5) one end butt in keep off shoulder (321), the other end of elastic component (5) is connected first clamping structure (1).

3. Clamping device according to claim 2,

the first clamping structure (1) is detachably connected with the sleeve (2);

the first side of the first clamping structure (1) is connected with an assembling block (6), the assembling block (6) is provided with a positioning groove (61), and the bottom of the positioning groove (61) is communicated with the channel (11);

one end, close to the first clamping structure (1), of the sleeve (2) is inserted and positioned in the positioning groove (61).

4. A holding device according to claim 3, characterized in that the end of the sleeve (2) connected to the positioning slot (61) is provided with an external thread, the positioning slot (61) is provided with an internal thread, and the sleeve (2) is in screw-fit connection with the positioning slot (61).

5. Clamping device according to claim 1, characterized in that the fixing section (33) is detachably connected with the second clamping structure (4).

6. The clamping device according to any one of claims 2 to 5, characterized in that the first clamping structure (1) comprises a first clamping block (12), a first linear sliding groove (121) is arranged in the first clamping block (12), and the first clamping structure (1) is respectively connected with an upper clamping block (7) in a sliding manner through two ends of the first linear sliding groove (121);

the second clamping structure (4) comprises a second clamping block (41), a second linear sliding groove (411) is arranged in the second clamping block (41), and the second clamping block (41) is connected with a lower clamping block (8) through two ends of the second linear sliding groove (411) in a sliding mode;

the first linear sliding groove (121) and the second linear sliding groove (411) are arranged in parallel.

7. Clamping device according to claim 6,

the upper clamping block (7) comprises a first sliding part (71), a first connecting part (72) and a first clamping part (73) which are connected in sequence; the lower clamping block (8) comprises a second sliding part (81) and a second clamping part (82) protruding out of the second sliding part (81);

the first clamping part (73) and the second clamping part (82) are arranged in parallel;

the distance between the first sliding part (71) and the second clamping part (82) is greater than the distance between the first clamping part (73) and the second clamping part (82).

8. Clamping device according to claim 7,

limiting holes (122) are respectively formed through the first clamping block (12) and the second clamping block (41);

the limiting hole (122) is communicated with the outer side of the first clamping block (12) and the first linear sliding groove (121), or communicated with the outer side of the second clamping block (41) and the second linear sliding groove (411);

the limiting hole (122) is provided with a fastening piece (9) in a matching way.

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