CN210879352U

CN210879352U - Multifunctional clamp

Info

Publication number: CN210879352U
Application number: CN201921780293.4U
Authority: CN
Inventors: 农胜隆; 韦献铁; 谢子洋; 李邦宇; 陈志颖; 高尚晗
Original assignee: Guangxi University of Science and Technology; Lushan College of Guangxi University of Science and Technology
Current assignee: Guangxi University of Science and Technology; Lushan College of Guangxi University of Science and Technology
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-30
Anticipated expiration: 2029-10-22

Abstract

A multifunctional clamp relates to a clamp, which comprises a mounting seat, a clamping block, a screw rod nut, a pushing polished rod and a guide rod, wherein the mounting seat is provided with a central block at the center of the interior, polished rod guide grooves are formed in two ends of the mounting seat, the polished rod guide grooves are in sliding fit with two ends of the pushing polished rod, the mounting seat is also connected with two ends of the screw rod, and threads at two ends of the screw rod are screwed in different directions; the mounting seats are respectively provided with centrosymmetric clamping block guide grooves; the middle part of the push polish rod is fixedly connected with the feed screw nut; promote the polished rod and cup jointed clamp splice support piece respectively in screw-nut both sides, clamp splice support piece's middle part and clamp splice guide way sliding fit, clamp splice support piece's upper portion and clamp splice fixed connection, clamp splice support piece still cup joints on the guide bar, and the one end of guide bar is connected on four angles of mount pad, and the other end is connected on the center block. The utility model has the characteristics of the structure is reliable reasonable, can realize that the function is diversified, the tight precision of positioning clamp is high, the clamp is tight efficient, easily uses widely.

Description

Multifunctional clamp

Technical Field

The utility model relates to a fixture, especially a multifunctional fixture.

Background

In the field of machining, a clamp is generally required to position and clamp a workpiece. Utility model patent with grant publication number CN207223853U discloses a square sample from centering anchor clamps, this anchor clamps can realize from centering anchor clamps to square sample work piece, but has following shortcoming: 1. the centering can be only carried out on the square workpiece, and the function is single; 2. the structure is not reasonable enough, and in the removal process, when the connecting rod was parallel with the threaded rod this position was exactly "dead point position", and when this dead point position, can't be through opening of handle control anchor clamps, must tear open anchor clamps and shift out dead point position and just can do work again. 3. The rotation of the hinge mechanism of the connecting mechanism is converted into the sliding of the adjusting block to realize the positioning and clamping, the precision can be lowered in the process of converting the rotation into the sliding, and the centering is difficult to ensure after long working time. 3. Only single-axis centering can be realized, and the centering precision is not high.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the multifunctional clamp is provided to solve the defects of single function, unreasonable structure and low positioning and clamping precision in the prior art.

The technical scheme for solving the technical problems is as follows: a multifunctional clamp comprises a mounting seat, a clamping block, a lead screw and a lead screw nut, wherein the clamping block is positioned on the upper surface of the mounting seat and used for clamping a workpiece, the lead screw and the lead screw nut are positioned in the mounting seat, the multifunctional clamp also comprises two push polished rods and four guide rods, the two push polished rods and the four guide rods are positioned in the mounting seat, the mounting seat is of a square split structure with a cavity inside, a central block is arranged at the center inside the mounting seat, polished rod guide grooves are respectively formed in the front end surface and the rear end surface of the mounting seat, the polished rod guide grooves are in sliding fit with the two ends of the two push polished; the left end surface and the right end surface of the mounting seat are respectively connected with two ends of a screw rod, and the screw threads at the two ends of the screw rod are different in rotating direction; the upper surface of the mounting seat is respectively provided with centrosymmetric clamping block guide grooves at connecting lines between four corners and the center of the mounting seat; the middle part of the push polished rod is fixedly connected with a screw rod nut, the screw rod nut is connected to a screw rod, and the screw rod is also connected with a power device; each pushing polished rod is respectively sleeved with a clamping block supporting piece on two sides of the screw rod nut, the middle part of each clamping block supporting piece is in sliding fit with a clamping block guide groove on the mounting seat, the upper part of each clamping block supporting piece penetrates through the upper surface of the mounting seat and is fixedly connected with the clamping block, the clamping block supporting pieces are also sleeved on the guide rods simultaneously, the guide rods are arranged along the bottoms of the clamping block guide grooves, one ends of the guide rods are connected to four corners of the mounting seat, and the other ends of the guide rods are connected to the central block; positioning plates with different shapes are respectively fixed on the four peripheral surfaces of the clamping blocks.

The utility model discloses a further technical scheme is: the mounting seat comprises an upper end cover and a base; the upper end cover is a cover body with a square cross section and a closed top surface, the central block is fixed at the central position of the bottom surface of the upper end cover through a fastener, and the central block is superposed with the central position of the upper end cover; the upper surface of the upper end cover is respectively provided with the centrosymmetric clamping block guide grooves at connecting lines between four corners of the upper end cover and the central block; the front end surface and the rear end surface of the upper end cover are respectively provided with the polish rod guide grooves; the base is a frame body with a square cross section and is matched and connected with the upper end cover through a fastener to form a square shell; four angles of the base are respectively and movably connected with the guide rod through a fixing pin and a nut.

The utility model discloses a further technical scheme is again: the upper end cover is also provided with a graduated scale which can read the size of the clamped workpiece from the position where the polished rod is pushed above the polished rod guide groove; the base is further provided with a fixing groove for fixedly connecting the base with the processing workbench through a fastener.

The utility model discloses a further technical scheme is: one end of the screw rod is a triangular left thread, the other end of the screw rod is a triangular right thread, the screw rod nut comprises a screw rod left nut and a screw rod right nut, and the screw rod left nut and the screw rod right nut are respectively matched with the left thread and the right thread of the screw rod.

The utility model discloses a further technical scheme is: the guide rod is of a long rectangular structure; the upper part of the clamping block supporting piece is a threaded column which penetrates through the clamping block and is fixedly connected with a clamping block nut above the clamping block; the middle part of the clamping block supporting piece is provided with a guide body which is in sliding fit with the clamping block guide groove; the bottom of the clamping block supporting piece is respectively provided with a round hole and a square hole, the round hole is in clearance fit with the pushing polished rod, and the square hole is in clearance fit with the guide rod.

The utility model discloses a further technical scheme is again: the middle part of the clamping block is provided with a guide key groove, a guide key is further arranged between the threaded column and the guide body of the clamping block supporting piece, and the guide key groove of the clamping block is matched and connected with the guide key on the clamping block supporting piece.

The utility model discloses a further technical scheme is: the positioning plate comprises a cambered surface positioning plate, a plane positioning plate and an inclined surface positioning plate.

The utility model discloses a further technical scheme is: the power device comprises a screw rod transmission gear, a motor transmission gear and a motor, wherein the motor is fixed in the mounting seat through a motor fixing seat, an output shaft of the motor is connected with the motor transmission gear, the motor transmission gear is meshed with the screw rod transmission gear, and the screw rod transmission gear is arranged on the screw rod.

The utility model discloses a further technical scheme is again: and the input end of the motor is also provided with a load regulator for regulating the clamping force of the clamp and protecting overload.

The utility model discloses a further technical scheme is: the power device also comprises a manual adjusting handle which is arranged on one end part of the screw rod.

Due to the adoption of the structure, compared with the prior art, the multifunctional fixture of the utility model has the following beneficial effects:

1. can realize multiple positioning and clamping functions

(1) Realize from centering locate function: when the workpiece is a symmetrical part, the workpiece can be specially called according to the appearance of the workpiece, the clamp can realize unilateral symmetrical positioning, bilateral symmetrical positioning or central symmetrical positioning, and can also realize surface contact positioning, line contact positioning and point contact positioning.

(2) The random positioning function is realized: when the workpiece is an asymmetric part, the fixture can automatically position and clamp the workpiece at a certain point (self-centering principle), or different positioning surfaces of the clamping blocks are adopted, or a clamping block supporting part without a positioning direction is detached.

(3) Realize the clamping function of multiple direction: the clamping device has the advantages that different working faces of the clamping blocks are adopted, so that clamping force (the inclined face of the clamping block is adopted) perpendicular to a horizontal plate can be applied to a plate workpiece, and clamping force (the cambered face or the plane of the clamping block is adopted) parallel to the horizontal plane can also be realized.

2. Reliable and reasonable structure

The utility model comprises a mounting seat, a clamping block, a screw rod, a screw nut, two pushing polished rods and four guide rods, wherein the screw rod, the screw nut, the two pushing polished rods and the four guide rods are positioned in the mounting seat; the upper surface of the mounting seat is respectively provided with centrosymmetric clamping block guide grooves at connecting lines between four corners and the center of the mounting seat; the middle part of the push polished rod is fixedly connected with a screw rod nut, and the screw rod nut is connected to a screw rod; every promotion polished rod has cup jointed clamp splice support piece respectively in screw-nut's both sides, clamp splice guide way sliding fit on clamp splice support piece's middle part and the mount pad, the upper surface and the clamp splice fixed connection of mount pad are passed on clamp splice support piece's upper portion, clamp splice support piece still cup joints simultaneously on the guide bar, this guide bar is arranged along the bottom of clamp splice guide way, and the one end of guide bar is connected on four angles of mount pad, the other end of guide bar is connected on the centre block. Therefore, the utility model discloses an adopt diagonal angle centering to press from both sides tightly, promote the polished rod and can not appear "dead point position" in any position at the in-process that promotes clamp splice support piece and remove along the guide bar, its structure is reliable reasonable.

3. The clamp blocks are convenient to disassemble and assemble, and the positioning surfaces are diversified.

The clamping block of the utility model adopts spline type installation and matching, so the assembly and disassembly are convenient, and the clamping block can be rotatably installed in 360 degrees in multiple directions; the locating surface is diversified, can realize the location of multiple shape, direction and press from both sides tightly, when the work piece that will fix a position is the dysmorphism piece, also can change with the locating plate that corresponds dysmorphism shape assorted, only need fix it on the clamp splice can.

4. High positioning precision

The transmission mechanism of the clamp adopts screw rod transmission and sliding guide rail type transmission, so the transmission positioning precision is high, and the clamp adopts diagonal centering clamping, so a plurality of degrees of freedom can be limited simultaneously, and the processing precision during milling is ensured.

5. Can realize manual/automatic loosening simultaneously, and is tight reliable, efficient.

When the utility model is used for clamping batch workpieces, the automatic loosening and clamping function can be realized by adopting the motor, and the processing efficiency can be greatly improved; when the clamped workpiece is easy to deform, the manual loosening function can be adopted, and the reliable machining of the workpiece is guaranteed.

6. The clamping force is adjustable, and the overload protection function is achieved.

The clamping force of the clamp can be manually set according to the material of the workpiece, the overload protection function is realized, and when the clamping force reaches the set clamping force, the clamp can automatically stop clamping.

7. Long service life and low maintenance cost.

The utility model discloses an upper end cover adopts closed structure, can prevent that cutting bits or coolant liquid from entering into transmission system, and greatly reduced fault rate and cost of maintenance improve anchor clamps's life.

The technical features of the multi-function clamp of the present invention will be further described with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1: the structure of the multi-functional clamp of the present invention is schematically shown,

FIG. 2: a top view with the upper end cap removed in one embodiment,

FIG. 3: in the first embodiment, the three-dimensional structure is shown without the upper end cover,

FIG. 4: in the first embodiment, the three-dimensional structure of the clamping block is schematically shown as a first,

FIG. 5: in the first embodiment, the perspective structure of the clamping block is schematically shown in the second embodiment (seen from the other direction),

FIG. 6: a schematic perspective view of a clamp block support in an embodiment.

In the above drawings, the respective reference numerals are explained as follows:

1-installation seat, 101-upper end cover, 102-base, 1021-fixing groove, 103-center block, 104-polish rod guide groove,

105-clamp block guide slot, 106-scale,

2-the clamping blocks are arranged in a clamping way,

201-a guide key groove, 202-a positioning plate, 2021-a cambered surface positioning plate, 2022-a plane positioning plate, 2023-an inclined surface positioning plate,

3-lead screw, 301-left thread, 302-right thread,

4-feed screw nut, 401-feed screw left nut, 402-feed screw right nut,

5-pushing the polished rod, 6-guiding rod,

7-a clamp block support, 701-a threaded column, 702-a guide body, 703-a round hole, 704-a square hole, 705-a guide key,

8-a power device, wherein the power device is arranged,

801-screw rod transmission gear, 802-motor transmission gear, 803-motor, 804-motor fixing seat, 805-coupler,

806-load adjusting nut, 807-load adjuster, 808-manual adjusting handle,

9-clamp block nut, 10-bearing end cover.

Detailed Description

The first embodiment is as follows:

the utility model provides a multifunctional clamp, includes mount pad 1, is located 1 upper surfaces of mount pad and is used for pressing from both sides the clamp splice 2 of tight work piece, is located lead screw 3, screw-nut 4, two promotion polished rods 5, four guide bars 6 of mount pad 1, wherein:

the mounting base 1 is a square split structure with a cavity inside, and the mounting base 1 comprises an upper end cover 101 and a base 102; the upper end cover 101 is a cover body with a square cross section and a closed top surface, and the upper end cover 101 is made into a closed type, so that cutting fluid and cutting scraps can be prevented from falling into the base 102 to damage a transmission part; a center block 103 is mounted at the center of the bottom surface of the upper end cover 101 through a fastener, and the center block 103 is overlapped with the center of the upper end cover 101; the front end surface and the rear end surface of the upper end cover 101 are respectively provided with a polished rod guide groove 104; the upper surface of the upper end cover 101 is provided with centrosymmetric clamping block guide grooves 105 at connecting lines between four corners of the upper end cover and the central block, and the upper end cover 101 is further provided with a graduated scale 106 above the polish rod guide groove 104, which can read the size of a clamped workpiece from the position where the polish rod is pushed. The base 102 is a frame body with a square cross section, and is connected with the upper end cover 101 through a fastener to form a square shell, and fixing grooves 1021 for fixedly connecting with the processing workbench through the fastener are further formed at the front end and the rear end of the base 102.

The clamping block 2 is mainly used for clamping a machined workpiece, a guide key groove 201 is formed in the middle of the clamping block, positioning plates 202 in different shapes are respectively fixed on the four peripheral surfaces of the clamping block 2, each positioning plate 202 comprises an arc surface positioning plate 2021, a plane positioning plate 2022, an inclined surface positioning plate 2023 and the like, and when the arc surface workpiece needs to be clamped, the clamping block 2 only needs to be rotated by 90 degrees, so that the arc surface positioning plate 2021 faces the arc surface workpiece; similarly, the plane positioning plate 2022 and the inclined positioning plate 2023 are also the same.

The two ends of the screw rod 3 are fixed at the left end and the right end of the base 102 through bearings, the left end of the screw rod 3 is a left thread 301, the right end of the screw rod 3 is a right thread 302, the left thread and the right thread are triangular threads with a self-locking function, a left screw rod nut 401 is matched on the left thread 301, a right screw rod nut 402 is matched on the right thread, and when the screw rod 3 rotates, the left screw rod nut 401 and the right screw rod nut 402 can move outwards or inwards simultaneously.

The two pushing polish rods 5 are respectively arranged on the left and right and are respectively positioned on two sides of the central block 103, two ends of each pushing polish rod 5 are respectively in sliding fit with the polish rod guide groove 104 of the upper end cover 101, the middle parts of the two pushing polish rods 5 are respectively fixed on the left screw rod nut 401 and the right screw rod nut 402, the clamping block supporting pieces 7 are respectively sleeved on two sides of the left screw rod nut 401 or the right screw rod nut 402 of each pushing polish rod 5, and when the left screw rod nut 401 and the right screw rod nut 402 simultaneously move inwards or outwards, the pushing polish rods 5 drive the four clamping block supporting pieces 7 to simultaneously move towards four corners or a central point of the base 102.

The guide rods 6 are of a long rectangular structure, and are four in total, each guide rod 6 is arranged along the bottom of the clamping block guide groove 105, one end of each guide rod 6 is movably connected to four corners of the base 102 through a fixing pin and a nut, and the other end of each guide rod 6 is connected to the center block 103.

The upper part of the clamping block supporting piece 7 is a threaded column 701, the middle part is a guide body 702, the bottom part is provided with a round hole 703 and a square hole 704 respectively, and a guide key 705 is also arranged between the threaded column 701 and the guide body 702; the threaded column 701 penetrates through the guide key groove 201 of the clamping block 2 and is tightly connected with the clamping block nut 9 above the clamping block 2, so that the clamping block 2 is fixedly screwed, and the clamping block 2 is prevented from moving up and down; the guide key 705 is matched and connected with the guide key groove 201 of the clamping block 2; the guide body 702 is in sliding fit with the clamping block guide groove 105 of the upper end cover 101; the round hole 703 at the bottom of the clamping block supporting piece 7 is in clearance fit with the push polish rod 5; the square hole 704 at the bottom of the clamping block supporting piece 7 is in clearance fit with the guide rod 6 and used for limiting five degrees of freedom of the clamping block supporting piece 7, so that the clamping block supporting piece 7 can be reliably moved and positioned.

The power device 8 comprises a screw rod transmission gear 801, a motor transmission gear 802, a motor 803 and a manual adjusting handle 808; the motor 803 is fixed in the mounting base 1 through a motor fixing base 804, an output shaft of the motor 803 is connected with a motor transmission gear 802 through a coupler 805, the motor transmission gear 802 is meshed with a screw rod transmission gear 801, and the screw rod transmission gear 801 is mounted on a screw rod 3. The input end of the motor 803 is also provided with a load adjuster 807, the load adjuster 807 is mainly used for adjusting the clamping force of the clamp and the overload protection function, before a certain workpiece is clamped, the clamping force is set according to the material of the workpiece and the required clamping force, then the clamping force is set through a load adjusting nut 806, and when the load output by the motor 803 reaches the value set by the load adjuster 807, the load adjuster 807 automatically disconnects the power supply of the motor 803, so as to achieve the overload adjustment and protection functions. The manual adjusting handle 808 is arranged at one end of the screw rod 3, and when the motor 803 does not work, the manual adjusting handle 808 can be used for manual clamping.

As a variation of the first embodiment, the positioning plates 202 on the four peripheral surfaces of the clamping block 2 may have other shapes matching the shape of the workpiece.

As a further variation of the first embodiment, the manual adjustment handle 808 may not be installed.

As another variation of this embodiment, when the centering function is not applied to a certain direction, the push polish rod in that direction can be removed.

The working process of the utility model is as follows:

1) and (3) automatic clamping process: the load adjusting nut 806 on the load adjuster 807 is adjusted to set the amount of clamping force in anticipation of the amount of clamping force required. And then according to the size of the clamped workpiece, electrifying to enable the motor 803 to rotate reversely, pushing the polished rod 5 to move to the size value indicated by the graduated scale 106 to be larger than the size of the workpiece, stopping the motor 803, placing the workpiece in the middle of the upper end cover 101, then electrifying to enable the motor 803 to rotate forwards, driving the motor transmission gear 802 by the motor 803 through the coupling 805 on the rotating shaft, engaging the motor transmission gear 802 with the lead screw transmission gear 801 on the lead screw 3 to drive the lead screw 3 to rotate, and moving the left lead screw nut 401 and the right lead screw nut 402 on the lead screw 3 to the central position under the transmission of the lead screw 3 because the left side and the right side on the lead screw 3 are respectively provided. Meanwhile, a push polished rod 5 is fixed on the left screw rod nut 401 and the right screw rod nut 402, respectively, and the clamping block support 7 sleeved on the push polished rod 5 moves towards the clamping direction under the action of pushing the polished rod 5. Because the base 102 is square, the four guide rods 6 are all centered at the center of the base 102, and the length of each guide rod 6 is a radius, the four clamping blocks 2 realize the centering and clamping effects in the moving process of the four clamping block supporting pieces 7. The clamping block 2 continuously increases the load output by the motor 803 along with the increase of the clamping force in the process of clamping the workpiece, when the output load of the motor 803 reaches the set value of the load adjusting regulator 807, the load adjusting regulator 807 automatically cuts off the power supply of the motor 803, and the screw rod 3 is a triangular thread, so that the self-locking function is realized during clamping.

2) And (3) automatic loosening process: the process of automatic release is the reverse of the process of automatic clamping. When the workpiece needs to be loosened, the motor is powered on to rotate reversely, the clamping block 2 moves in the opposite direction, and the workpiece is loosened.

3) Manual clamping and loosening processes: when the clamped workpiece material is easy to deform and the required clamping force cannot be judged or the automatic function is damaged, the screw rod 3 can be twisted by the manual adjusting handle 808, so that clamping or loosening is realized.

Claims

1. The utility model provides a multifunctional clamp, includes mount pad (1), be located clamp splice (2) that are used for pressing from both sides tight work piece on mount pad (1) upper surface, be located lead screw (3) of mount pad (1), screw-nut (4), its characterized in that: the polishing device is characterized by further comprising two pushing polished rods (5) and four guide rods (6) which are located in the mounting seat, wherein the mounting seat (1) is of a square split structure, a cavity is formed in the mounting seat, a center block (103) is installed in the center of the mounting seat (1), polished rod guide grooves (104) are formed in the front end face and the rear end face of the mounting seat (1), the polished rod guide grooves (104) are in sliding fit with the two ends of the two pushing polished rods (5), and the two pushing polished rods (5) are located on the two sides of the center block (103) respectively; the left end surface and the right end surface of the mounting seat (1) are respectively connected with two ends of a screw rod (3), and the screw threads at the two ends of the screw rod (3) have different rotating directions; the upper surface of the mounting seat (1) is respectively provided with centrosymmetric clamping block guide grooves (105) at connecting lines between four corners and the center of the mounting seat; the middle part of the push polish rod (5) is fixedly connected with the feed screw nut (4), the feed screw nut (4) is connected to the feed screw (3), and the feed screw (3) is also connected with the power device (8); each push polish rod (5) is respectively sleeved with a clamping block supporting piece (7) on two sides of the lead screw nut (4), the middle part of each clamping block supporting piece (7) is in sliding fit with a clamping block guide groove (105) on the mounting seat (1), the upper part of each clamping block supporting piece (7) penetrates through the upper surface of the mounting seat (1) and is fixedly connected with the clamping block (2), the clamping block supporting pieces (7) are also sleeved on the guide rods (6), the guide rods (6) are arranged along the bottoms of the clamping block guide grooves (105), one ends of the guide rods (6) are connected to four corners of the mounting seat (1), and the other ends of the guide rods (6) are connected to the central block (103); positioning plates (202) with different shapes are respectively fixed on the four peripheral surfaces of the clamping blocks (2).

2. The multi-function clip of claim 1, wherein: the mounting seat (1) comprises an upper end cover (101) and a base (102); the upper end cover (101) is a cover body with a square cross section and a closed top surface, the central block (103) is fixed at the central position of the bottom surface of the upper end cover (101) through a fastener, and the central block (103) is overlapped with the central position of the upper end cover (101); the upper surface of the upper end cover (101) is respectively provided with the centrosymmetric clamping block guide grooves (105) at the connecting line positions between the four corners of the upper end cover and the central block; the front end surface and the rear end surface of the upper end cover (101) are respectively provided with the polish rod guide groove (104); the base (102) is a frame body with a square cross section, and is matched and connected with the upper end cover (101) through a fastener to form a square shell; four corners of the base (102) are respectively and movably connected with the guide rod (6) through fixing pins and nuts.

3. The multi-function clip of claim 2, wherein: the upper end cover (101) is also provided with a graduated scale (106) above the polished rod guide groove (104), and the graduated scale can read the size of a clamped workpiece from the position where the polished rod is pushed; the base (102) is also provided with a fixing groove (1021) which is used for being fixedly connected with the processing workbench through a fastener.

4. The multi-function clip of claim 1, wherein: one end of the screw rod (3) is a triangular left thread (301), the other end of the screw rod is a triangular right thread (302), the screw rod nut (4) comprises a screw rod left nut (401) and a screw rod right nut (402), and the screw rod left nut (401) and the screw rod right nut (402) are respectively matched with the left thread (301) and the right thread (302) of the screw rod (3).

5. The multi-function clip of claim 1, wherein: the guide rod (6) is of a long rectangular structure; the upper part of the clamping block supporting piece (7) is provided with a threaded column (701), and the threaded column (701) penetrates through the clamping block (2) and is fixedly connected with a clamping block nut (9) above the clamping block (2); the middle part of the clamping block supporting piece (7) is provided with a guide body (702), and the guide body (702) is in sliding fit with the clamping block guide groove (105); the bottom of the clamping block supporting piece (7) is respectively provided with a round hole (703) and a square hole (704), the round hole (703) is in clearance fit with the push polish rod (5), and the square hole (704) is in clearance fit with the guide rod (6).

6. The multi-function clip of claim 5, wherein: the middle part of the clamping block (2) is provided with a guide key groove (201), a guide key (705) is further arranged between the threaded column (701) and the guide body (702) of the clamping block supporting piece (7), and the guide key groove (201) of the clamping block (2) is matched and connected with the guide key (705) on the clamping block supporting piece (7).

7. The multi-function clip of claim 1, wherein: the positioning plate (202) comprises an arc surface positioning plate (2021), a plane positioning plate (2022) and an inclined surface positioning plate (2023).

8. The multi-function clip of claim 1, wherein: the power device (8) comprises a screw rod transmission gear (801), a motor transmission gear (802) and a motor (803), the motor (803) is fixed in the mounting seat (1) through a motor fixing seat (804), an output shaft of the motor (803) is connected with the motor transmission gear (802), the motor transmission gear (802) is meshed with the screw rod transmission gear (801), and the screw rod transmission gear (801) is installed on the screw rod (3).

9. The multi-function clip of claim 8, wherein: the input end of the motor (803) is also provided with a load regulator (807) for regulating the clamping force of the clamp and protecting overload.

10. The multi-function clip of claim 8, wherein: the power device (8) further comprises a manual adjusting handle (808), and the manual adjusting handle (808) is installed on one end part of the screw rod (3).