Clamping device

Abstract

The present invention discloses a clamping device, comprising a clamping assembly, a rotating shaft and a locking assembly; the clamping assembly comprises a fixed seat and a clamping jaw, the clamping jaw is arranged on the fixed seat, and the clamping jaw comprises two clamping blocks; the rotating shaft is arranged between the two clamping blocks and is rotatably connected to the fixed seat, and the side wall of the rotating shaft is provided with a pushing portion for pushing the clamping block to open the clamping jaw; the locking assembly comprises a locking handle and a locking ring, the locking handle is sleeved on the rotating shaft and can move axially along the rotating shaft, the locking ring is sleeved on the rotating shaft and its lower end is elastically connected to the rotating shaft, and the locking handle is used to push the locking ring to move axially along the rotating shaft; a locking hole is provided on one of the locking ring and the fixed seat, and a first positioning pin corresponding to the locking hole is provided on the other, and in a locked state, the first positioning pin is inserted into the locking hole, and in an unlocked state, the first positioning pin leaves the locking hole.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a clamping device. Background Art

[0002] CNC machining refers to a process method for machining parts on CNC machine tools. The process procedures of CNC machine tool machining and traditional machine tool machining are generally consistent, but there have also been significant changes. It is a mechanical machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve problems such as a wide variety of parts, small batches, complex shapes, and high precision, and to achieve efficient and automated machining. Generally, CNC machining usually refers to computer digital control precision machining, CNC machining lathes, CNC machining milling machines, and CNC machining boring and milling machines.

[0003] A clamping device is a device used to clamp parts, objects and other workpieces to achieve the effect of fixing or limiting. Existing clamping devices require an external power source (compressed air or power supply) to switch between the clamping state and the loose state. At the same time, the existing clamping devices are large in size, which makes them unable to be stored in the CNC tool library.

[0004] The above contents are only used to assist in understanding the technical solution of the invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide a clamping device, aiming to solve at least one of the problems mentioned in the above background technology.

[0006] To achieve the above object, the clamping device proposed by the present invention comprises:

[0007] The clamping assembly comprises a fixing seat and a clamping jaw, wherein the clamping jaw is arranged on the fixing seat, and the clamping jaw comprises two clamping blocks which are arranged opposite to each other and movably connected;

[0008] A rotating shaft is disposed between the two clamping blocks and is rotatably connected to the fixing seat, and a push portion is convexly provided on the side wall of the rotating shaft for pushing the clamping blocks to open the clamping jaws;

[0009] A locking assembly, comprising a locking handle and a locking ring, wherein the locking handle is sleeved on the rotating shaft and can move between a first position and a second position along the axial direction of the rotating shaft, the locking ring is sleeved on the rotating shaft and its lower end is elastically connected to the rotating shaft, and the locking handle is located above the locking ring to push the locking ring to move axially along the rotating shaft;

[0010] A locking hole is provided on one of the locking ring and the fixing seat, and a first positioning pin corresponding to the locking hole is provided on the other. In a locked state, the locking handle is located at the first position, the locking handle is away from the fixing seat, and the first positioning pin is inserted into the locking hole. In an unlocked state, the locking handle is located at the second position, the locking handle is close to the fixing seat, the locking handle abuts against the locking ring, and the first positioning pin leaves the locking hole. The rotating shaft can carry the locking ring to rotate relative to the clamp.

[0011] In one embodiment, the locking hole includes a first locking hole and a second locking hole, and the rotating axis has a third position and a fourth position for opening and clamping the jaws respectively, and in the third position, the first locking hole corresponds to the first positioning pin, and in the fourth position, the second locking hole corresponds to the first positioning pin.

[0012] In one embodiment, the fixed seat is sleeved on the locking ring, the lower end of the locking ring is bent outward to form a first ring platform, the upper end of the fixed seat is bent inward to form a second ring platform, the second ring platform is located above the first ring platform, the locking hole is provided on one of the first ring platform and the second ring platform, and the first positioning pin is provided on the other one.

[0013] In one embodiment, a guide column is protruding from the side wall of the rotating shaft, and the guide column extends axially along the rotating shaft. A slot matching the guide column is provided on the locking handle and / or the locking ring, and the locking handle and / or the locking ring moves up and down along the extension direction of the guide column.

[0014] In one embodiment, the locking assembly further comprises a first spring, the locking handle is sleeved on the first spring, and the upper and lower ends of the first spring are respectively connected to the locking handle and the upper end of the rotating shaft; and / or,

[0015] The clamping device also includes a second spring, and the upper and lower ends of the second spring are respectively connected to the locking ring and the rotating shaft.

[0016] In one embodiment, the rotating shaft is rotatably connected to the fixing seat via a first bearing and a second bearing arranged vertically, and the thrust portion is located between the first bearing and the second bearing.

[0017] In one embodiment, the two clamping blocks are respectively a first clamping block and a second clamping block, the first clamping block can move in a first direction relative to the second clamping block to open or clamp the jaws, the clamping assembly also includes a third spring and a fourth spring, the third spring and the fourth spring both extend along the first direction, the first clamping block is connected to the fixed seat via the third spring, and the second clamping block is connected to the fixed seat via the fourth spring.

[0018] In one embodiment, a slide rail is provided on the fixing seat, the slide rail extends along the first direction, and a slider adapted to the slide rail is provided on the clamping block, and the slider carries the clamping block to slide along the slide rail.

[0019] In one embodiment, a stopper is convexly provided on the side wall of the upper end of the rotating shaft, and a receiving groove is concavely provided on the inner wall of the locking handle to receive the stopper, and the stopper is used to limit the movement of the locking handle between the first position and the second position.

[0020] In one embodiment, a second positioning pin is further included, which is disposed on the fixing seat and located between the two clamping blocks. The second positioning pin extends axially along the rotating shaft and is used for inserting the product to be clamped to fix the product to be clamped.

[0021] The technical solution of the present invention solves the problems that the existing clamping device needs an external power source and cannot be stored in the CNC system tool magazine by setting a clamping component, a rotating shaft and a locking component that cooperate with each other. Since the clamping device of the present invention is compactly assembled as a whole and has a small size, it can be stored in the CNC system tool magazine; in the technical solution of the present invention, the locking component controls whether the rotating shaft can rotate relative to the fixed seat, and the rotating shaft controls the opening or clamping of the clamping jaws. The locking component cooperates with the rotating shaft, so that the clamping device can automatically complete the clamping or loosening of the material; in addition, for materials of different sizes, the clamping device of the present invention can replace different clamping jaws, which has the characteristics of a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 is a schematic structural diagram of a clamping device of the present invention in a locked state in one embodiment;

[0024] Figure 2 yes Figure 1 The main view;

[0025] Figure 3 yes Figure 2 AA section view;

[0026] Figure 4 yes Figure 1 Left view of

[0027] Figure 5 yes Figure 4 BB section view;

[0028] Figure 6 is a schematic structural diagram of the clamping device of the present invention in an unlocked state in one embodiment;

[0029] Figure 7 yes Figure 6 CC section view;

[0030] Figure 8 yes Figure 6 A partial exploded view of the .

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 Clamping device 110 Rotation axis 111 Block 112 Pushing part 113 Guide column 114 First Spring 131 Lock handle 1311 Storage tank 132 Locking ring 1321 The first ring 1321a First positioning pin 133 Second spring 151 Fixed seat 1511 The second ring 1511a keyhole 152 Gripper 152a Clamp 1521 First clamp 1522 Second clamp 1531 Third spring 1532 Fourth Spring 1541 Slide rails 1542 slider 155 Second positioning pin 161 First bearing 162 Second bearing

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention provides a clamping device 100 .

[0038] See also Figure 1 , Figure 2 , Figure 3 and Figure 7 In the embodiment of the present invention, the clamping device 100 includes a clamping assembly, a rotating shaft 110 and a locking assembly; the clamping assembly includes a fixed seat 151 and a clamping jaw 152, the clamping jaw 152 is arranged on the fixed seat 151, and the clamping jaw 152 includes two clamping blocks 152a that are arranged opposite to each other and movably connected; the rotating shaft 110 is arranged between the two clamping blocks 152a and is rotatably connected to the fixed seat 151, and the side wall of the rotating shaft 110 is convexly provided with a pushing portion 112 for pushing the clamping block 152a to open the clamping jaw 152; the locking assembly includes a locking handle 131 and a locking ring 132, the locking handle 131 is sleeved on the rotating shaft 110, and can move between a first position and a second position along the axial direction of the rotating shaft 110, and the locking ring 132 is sleeved on the rotating shaft 110 and its lower end is elastically connected to the rotating shaft 110 Then, the locking handle 131 is located above the locking ring 132, and is used to push the locking ring 132 to move axially along the rotating shaft 110; a locking hole 1511a is provided on one of the locking ring 132 and the fixing seat 151, and a first positioning pin 1321a corresponding to the locking hole 1511a is provided on the other. In the locked state, the locking handle 131 is located at the first position, the locking handle 131 is away from the fixing seat 151, and the first positioning pin 1321a is inserted into the locking hole 1511a. In the unlocked state, the locking handle 131 is located at the second position, the locking handle 131 is close to the fixing seat 151, the locking handle 131 is in contact with the locking ring 132, and the first positioning pin 1321a leaves the locking hole 1511a, and the rotating shaft 110 can carry the locking ring 132 to rotate relative to the clamping jaw 152.

[0039] In the embodiment of the present invention, one or more push parts 112 are convexly formed on the side wall of the rotating shaft 110. When there is only one push part 112, the push part 112 pushes one of the two clamping blocks 152a to open the clamping jaws 152. When there are multiple push parts 112, the clamping jaws 152 can be opened by pushing the two clamping blocks 152a to move backwards at the same time. Figure 3 In a preferred embodiment, the side wall of the rotating shaft 110 is provided with two pushing portions 112, and the two pushing portions 112 are respectively arranged on opposite sides of the rotating shaft 110 to simultaneously push the two clamping blocks 152a to move backwards to open the clamping jaws 152.

[0040] The clamping device 100 of the present invention can be stored as a whole in the tool magazine of the CNC system, and the locking handle 131 matches the tool magazine interface of the CNC system. When it is necessary to take the material, the clamping device 100 is enabled through the automatic tool changing function of the CNC system. The clamping device 100 is first aligned and positioned with the material, and then the locking handle 131 is pressed downward, so that the locking handle 131 moves downward from the first position to the second position relative to the rotating shaft 110. In this process, the locking handle 131 pushes the locking ring 132 downward, thereby pushing the first positioning pin 1321a out of the locking hole 1511a; then the locking handle 131 is rotated by a preset angle The pushing portion 112 is rotated from the position abutting against the clamping block 152a to the position spaced apart from the clamping block 152a. In this process, without the pushing of the pushing portion 112, the two clamping blocks 152a will move toward each other, so that the clamping jaws 152 clamp the material, and then the locking handle 131 is lifted up, and the locking handle 131 moves from the second position to the first position, and the locking ring 132 moves upward accordingly until the first positioning pin 1321a is inserted into the locking position in the locking hole 1511a, so that the fixing seat 151 is locked with the rotating shaft 110, that is, the rotating shaft 110 cannot rotate relative to the clamping jaws 152. When it is necessary to discharge the material, the locking handle 131 is first pressed downward so that the locking handle 131 moves downward from the first position to the second position relative to the rotating shaft 110, and then the locking handle 131 is rotated by a preset angle so that the pushing portion 112 rotates to a position facing the clamping block 152a, and the pushing portion 112 pushes the clamping block 152a, and the two clamping blocks 152a move in opposite directions, and the clamping jaws 152 open to realize material discharge, and then the locking handle 131 is lifted from the second position to the first position, and the rotating shaft 110 and the fixing seat 151 are locked.

[0041] It should be particularly noted that the clamping device 100 of the present invention is not limited to being stored in a tool magazine of a CNC system, but can also be used in conjunction with other devices, without any particular limitation.

[0042] The technical solution of the present invention solves the problems that the existing clamping device 100 needs an external power source and cannot be stored in the CNC system tool magazine by setting a clamping component, a rotating shaft 110 and a locking component that cooperate with each other. Since the clamping device 100 of the present invention is compactly assembled as a whole and has a small size, it can be stored in the CNC system tool magazine; in the technical solution of the present invention, the rotation of the rotating shaft 110 relative to the fixed seat 151 is controlled by the locking component, and the opening or clamping of the clamping jaw 152 is controlled by the rotating shaft 110. The locking component cooperates with the rotating shaft 110, so that the clamping device 100 can automatically complete the clamping or loosening of the material; in addition, for materials of different sizes, the clamping device 100 of the present invention can replace different clamping jaws 152, which has the characteristics of a wide range of applications.

[0043] See also Figure 1 In the above embodiment, specifically, the clamping device 100 further includes a second positioning pin 155, which is disposed at the bottom of the fixing seat 151 and between the two clamping blocks 152a. The second positioning pin 155 extends axially along the rotating shaft 110, and is used to insert the product to be clamped to fix the product to be clamped. When it is necessary to take the material, the clamping device 100 is enabled through the automatic tool changing function of the CNC system, and the clamping device 100 is first moved as a whole, so that the second positioning pin 155 is inserted into the positioning hole of the material for positioning, and then the locking handle 131 is pressed down, the rotating shaft 110 is rotated, and the locking handle 131 is lifted up in sequence.

[0044] See also Figure 7 and Figure 8 More specifically, the locking hole 1511a includes a first locking hole and a second locking hole, and the rotating shaft 110 has a third position and a fourth position for opening and clamping the clamping jaws 152, respectively. In the third position, the pushing portion 112 pushes the clamping block 152a, and the first locking hole corresponds to the first positioning pin 1321a. In the fourth position, the second locking hole corresponds to the first positioning pin 1321a. During the material picking process, at the initial stage, the first positioning pin 1321a is inserted into the first locking hole, and the locking handle 131 is pressed down to make the first positioning pin 1321a leave the first locking hole. After rotating the rotating shaft 110 by a preset angle, the locking handle 131 is lifted up to make the first positioning pin 1321a inserted into the second locking hole, so as to achieve locking of the rotating shaft 110 with the fixing seat 151.

[0045] The number of the first positioning pins 1321a can be one or more. When the number of the first positioning pins 1321a is multiple, in the above-mentioned material picking process, when a part of the first positioning pins 1321a is inserted into the first lock hole (or the second lock hole), the other part is inserted into the second lock hole (or the first lock hole).

[0046] The number of the first lock holes is one or more, and the number of the second lock holes is one or more. In a specific embodiment, the first lock holes and the second lock holes are both arranged on the fixed seat 151, and the first positioning pin 1321a is arranged on the locking ring 132. The number of the first lock holes and the second lock holes are both two. The two first lock holes and the two second lock holes are arranged at equal intervals along the axial direction of the fixed seat 151, and the arrangement order is: first lock hole, second lock hole, first lock hole, second lock hole; correspondingly, the number of the first positioning pins 1321a is four, and the four first positioning pins 1321a are arranged at equal intervals along the circumference of the locking ring 132. In the process of taking materials, after the rotating shaft 110 is rotated 90°, the rotating shaft 110 can be switched from the third position to the fourth position, so that the clamping jaws 152 are clamped, and the rotating shaft 110 is further rotated 90° in the original direction or 90° in the opposite direction, and the rotating shaft 110 can be switched from the fourth position back to the third position to realize the opening of the clamping jaws 152.

[0047] See also Figure 4 and Figure 5 In one embodiment, the fixing seat 151 is sleeved on the locking ring 132, the lower end of the locking ring 132 is bent outward to form a first ring platform 1321, the upper end of the fixing seat 151 is bent inward to form a second ring platform 1511, the second ring platform 1511 is located above the first ring platform 1321, the locking hole 1511a is provided on one of the first ring platform 1321 and the second ring platform 1511, and the first positioning pin 1321a is provided on the other one. In a specific embodiment, the fixed seat 151 includes a base and a locking cover, both of which are sleeved on the rotating shaft 110, the clamping claw 152 is arranged on the base, the rotating shaft 110 is rotatably connected to the base, the locking cover is arranged above the base and its lower end is fixedly connected to the base, the upper end of the locking cover is bent inward to form the second ring platform 1511, the locking hole 1511a is arranged on the second ring platform 1511, the locking hole 1511a penetrates the lower surface of the second ring platform 1511, the first positioning pin 1321a is arranged on the upper surface of the first ring platform 1321, the first positioning pin 1321a extends in the vertical direction, and when the first positioning pin 1321a is inserted into the locking hole 1511a and locked, the locking cover is connected to the locking ring 132.

[0048] Please continue reading Figure 5 In the above embodiment, the rotating shaft 110 is rotatably connected to the fixed seat 151 through the first bearing 161 and the second bearing 162 arranged up and down, and the push portion 112 is located between the first bearing 161 and the second bearing 162. Specifically, the base is connected to the rotating shaft 110 through the first bearing 161 and the second bearing 162, the first bearing 161 and the second bearing 162 are sleeved on the rotating shaft 110, the inner rings of the first bearing 161 and the second bearing 162 are fixedly connected to the rotating shaft 110, and the outer rings of the first bearing 161 and the second bearing 162 are fixedly connected to the base. The first bearing 161 and the second bearing 162 are arranged together at the upper and lower ends of the push portion 112, which can further improve the overall stability of the clamping device 100.

[0049] See also Figure 4 , Figure 5 , Figure 6 and Figure 7 In one embodiment, a stopper 111 is convexly provided on the side wall of the upper end of the rotating shaft 110, and a receiving groove 1311 is concavely provided on the inner wall of the locking handle 131 to receive the stopper 111. The stopper 111 is used to limit the movement of the locking handle 131 between the first position and the second position along the axial direction of the rotating shaft 110. Specifically, the stopper 111 is sleeved on the rotating shaft 110 and fixedly connected to the rotating shaft 110. The shape of the stopper 111 is not particularly limited. In a preferred embodiment, the stopper 111 is in the shape of a ring to match the shape of the receiving groove 1311.

[0050] It is understandable that a receiving groove may be recessed on the upper side wall of the rotating shaft 110 , and correspondingly, a stopper may be protruded on the inner side wall of the locking handle 131 to limit the locking handle 131 from moving axially along the rotating shaft 110 between the first position and the second position.

[0051] See 3 and Figure 8Further, a guide column 113 is convexly provided on the side wall of the rotating shaft 110, and the guide column 113 extends axially along the rotating shaft 110. The locking handle 131 and / or the locking ring 132 are provided with a slot adapted to the guide column 113, and the locking handle 131 and / or the locking ring 132 move up and down along the extending direction of the guide column 113. In a specific embodiment, the guide column 113 extends downward from the upper end of the rotating shaft 110, and the guide column 113 passes through the stopper 111 and extends to the position corresponding to the locking ring 132. The inner side wall of the locking handle 131 and the inner side wall of the locking ring 132 are both provided with a slot adapted to the guide column 113. The guide column 113, on the one hand, guides the movement of the locking handle 131 relative to the rotating shaft 110, and on the other hand, cooperates with the slot to limit the rotation of the locking handle 131 relative to the rotating shaft 110.

[0052] Please continue reading Figure 3 and Figure 8 In one embodiment, the locking assembly further includes a first spring 114, the locking handle 131 is sleeved on the first spring 114, the first spring 114 extends in the vertical direction, and the upper and lower ends of the first spring 114 are respectively connected to the inner top wall of the locking handle 131 and the upper end of the rotating shaft 110. When the locking handle 131 is located at the first position, the first spring 114 is in a compressed state or just in a natural extension state. When the locking handle 131 moves from the first position to the second position, the locking handle 131 will further compress the first spring 114. By arranging the first spring 114 between the locking handle 131 and the rotating shaft 110, the clamping device 100 of the present invention always maintains a very compact state, further improving the stability of the overall structure.

[0053] In addition, the clamping device 100 further includes a second spring 133, and the upper and lower ends of the second spring 133 are respectively connected to the lock ring 132 and the rotating shaft 110. Specifically, the second spring 133 is sleeved on the rotating shaft 110, and when the lock handle 131 moves from the first position to the second position, the lock handle 131 pushes the second spring 133 downward through the lock ring 132 to further compress the second spring 133, and when the lock handle 131 moves from the second position to the first position, the second spring 133 stretches upward to reset, and the second spring 133 pushes the lock ring 132 upward until the first positioning pin 1321a is inserted into the locking position in the lock hole 1511a.

[0054] See also Figure 3 , Figure 5 and Figure 8In one embodiment, the two clamping blocks 152a are respectively a first clamping block 1521 and a second clamping block 1522, the first clamping block 1521 can move in a first direction relative to the second clamping block 1522 to open or clamp the clamping jaws 152, the clamping assembly also includes a third spring 1531 and a fourth spring 1532, the third spring 1531 and the fourth spring 1532 both extend along the first direction, the first clamping block 1521 is connected to the fixed seat 151 through the third spring 1531, and the second clamping block 1522 is connected to the fixed seat 151 through the fourth spring 1532. Specifically, the first clamping block 1521 is connected to the base through the third spring 1531, and the second clamping block 1522 is connected to the base through the fourth spring 1532.

[0055] The number of the third spring 1531 and the fourth spring 1532 is one or more, and preferably, the number of the third spring 1531 and the fourth spring 1532 are both multiple. In a specific embodiment, the number of the third spring 1531 and the fourth spring 1532 are both two, the first clamping block 1521 and the second clamping block 1522 are arranged on the left and right sides of the rotating shaft 110, and a spring group consisting of a third spring 1531 and a fourth spring 1532 is respectively arranged on the front and rear sides of the rotating shaft 110. When the rotating shaft 110 is located at the third position, the pushing portion 112 pushes the first clamping block 1521 and the second clamping block 1522, so that the third spring 1531 and the fourth spring 1532 are compressed and the clamping jaw 152 is opened; when the rotating shaft 110 rotates from the third position to the fourth position, the third spring 1531 and the fourth spring 1532 will extend, thereby driving the first clamping block 1521 and the second clamping block 1522 to move toward each other, thereby clamping the clamping jaw 152. By providing a group of springs composed of the third spring 1531 and the fourth spring 1532 on both the front and rear sides of the rotating shaft 110, the forces on the front and rear sides of the first clamping block 1521 and the second clamping block 1522 can be balanced.

[0056] See also Figure 8 In the above embodiment, further, the fixing seat 151 is provided with a slide rail 1541. Specifically, the slide rail 1541 is provided on the base, and the slide rail 1541 extends along the first direction (i.e., the left-right direction). The clamping block 152a is provided with a slider 1542 adapted to the slide rail 1541, and the slider 1542 carries the clamping block 152a to slide along the slide rail 1541. The slide rail 1541 cooperates with the slider 1542 to guide the movement of the clamping block 152a.

[0057] The foregoing examples are merely illustrative and are used to explain some features of the method of the present invention. The appended claims are intended to claim the widest possible range that can be conceived, and the embodiments presented herein are only illustrations of selected implementations according to the combination of all possible embodiments. Therefore, it is the applicant's intention that the appended claims are not limited by the selection of examples that illustrate the features of the present invention. Some numerical ranges used in the claims also include sub-ranges within them, and changes in these ranges should also be interpreted as being covered by the appended claims where possible.

Claims

1. A clamping device, characterized in that: include: The clamping assembly comprises a fixing seat and a clamping jaw, wherein the clamping jaw is arranged on the fixing seat, and the clamping jaw comprises two clamping blocks which are arranged opposite to each other and movably connected; A rotating shaft is disposed between the two clamping blocks and is rotatably connected to the fixing seat, and a push portion is convexly provided on the side wall of the rotating shaft for pushing the clamping blocks to open the clamping jaws; A locking assembly, comprising a locking handle and a locking ring, wherein the locking handle is sleeved on the rotating shaft and can move between a first position and a second position along the axial direction of the rotating shaft, the locking ring is sleeved on the rotating shaft and its lower end is elastically connected to the rotating shaft, and the locking handle is located above the locking ring to push the locking ring to move axially along the rotating shaft; A locking hole is provided on one of the locking ring and the fixing seat, and a first positioning pin corresponding to the locking hole is provided on the other. In a locked state, the locking handle is located at the first position, the locking handle is away from the fixing seat, and the first positioning pin is inserted into the locking hole. In an unlocked state, the locking handle is located at the second position, the locking handle is close to the fixing seat, the locking handle abuts against the locking ring, and the first positioning pin leaves the locking hole. The rotating shaft can carry the locking ring to rotate relative to the clamping jaw. The two clamping blocks are respectively a first clamping block and a second clamping block, the first clamping block can move relative to the second clamping block in a first direction to open or clamp the clamping jaws, the clamping assembly further comprises a third spring and a fourth spring, the third spring and the fourth spring both extend along the first direction, the first clamping block is connected to the fixing seat via the third spring, and the second clamping block is connected to the fixing seat via the fourth spring; The locking hole comprises a first locking hole and a second locking hole, the rotating shaft has a third position and a fourth position for opening and clamping the clamping jaws respectively, in the third position, the first locking hole corresponds to the first positioning pin, and in the fourth position, the second locking hole corresponds to the first positioning pin; The fixing seat is sleeved on the locking ring, the lower end of the locking ring is bent outward to form a first ring platform, the upper end of the fixing seat is bent inward to form a second ring platform, the second ring platform is located above the first ring platform, the locking hole is provided on one of the first ring platform and the second ring platform, and the first positioning pin is provided on the other one.

2. The clamping device according to claim 1, characterized in that: A guide column is protruding from the side wall of the rotating shaft, and the guide column extends axially along the rotating shaft. A slot adapted to the guide column is provided on the locking handle and / or the locking ring, and the locking handle and / or the locking ring moves up and down along the extension direction of the guide column.

3. The clamping device according to claim 1, characterized in that: The locking assembly further comprises a first spring, the locking handle is sleeved on the first spring, and the upper and lower ends of the first spring are respectively connected to the locking handle and the upper end of the rotating shaft; and / or, The clamping device also includes a second spring, and the upper and lower ends of the second spring are respectively connected to the locking ring and the rotating shaft.

4. The clamping device according to claim 1, characterized in that: The rotating shaft is rotatably connected to the fixing seat via a first bearing and a second bearing arranged vertically, and the push portion is located between the first bearing and the second bearing.

5. The clamping device according to claim 1, characterized in that: The fixing seat is provided with a slide rail, and the slide rail extends along the first direction. The clamping block is provided with a sliding block adapted to the slide rail, and the sliding block carries the clamping block to slide along the slide rail.

6. The clamping device according to claim 1, characterized in that: A stopper is convexly provided on the side wall of the upper end of the rotating shaft, and a receiving groove is concavely provided on the inner wall of the locking handle to receive the stopper, and the stopper is used to limit the movement of the locking handle between the first position and the second position.

7. The clamping device according to any one of claims 1 to 6, characterized in that: It also includes a second positioning pin, which is arranged on the fixing seat and located between the two clamping blocks. The second positioning pin extends axially along the rotating shaft and is used for inserting the product to be clamped to fix the product to be clamped.

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