Clamping mechanism and clamping device

Abstract

The clamping mechanism comprises a mounting seat, a clamping component and a driving piece, the clamping component comprises an elastic clamping head and a clamping sleeve, the elastic clamping head is arranged on the mounting seat, the clamping sleeve is sleeved on the elastic clamping head, the clamping sleeve can slide along the axis direction of the elastic clamping head, and the driving piece is arranged on the clamping sleeve. The elastic chuck is extruded to be closed or loosened to be opened; the driving part is arranged on the mounting base and located on the peripheral side of the elastic chuck, and the power output end of the driving part is connected with the clamping sleeve and used for driving the clamping sleeve to slide. According to the clamping mechanism, the driving piece is arranged to be connected with the clamping sleeve, the clamping sleeve is driven to slide through the driving piece, compared with the prior art, the clamping mechanism achieves driving of the clamping sleeve, the requirement for high sealing performance does not exist, and the manufacturing difficulty is reduced.

Description

Technical Field

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

[0002] At present, a Chinese patent with application number 202211447527.X discloses a pneumatic rotary chuck, including a cylinder body, a movable sleeve and an elastic chuck. The movable sleeve is sleeved on the elastic chuck and is passed through the cylinder body together with the elastic chuck. A piston part that tightly fits with the inner wall of the cylinder body is formed at one end of the movable sleeve. The pneumatic rotary chuck controls the change of air pressure in the cylinder body to drive the piston part to move, thereby causing the movable sleeve to move along the elastic chuck. The elastic chuck is squeezed to close or released to open during the movement of the movable sleeve.

[0003] During the pneumatic process, the chamber in the cylinder needs to be filled with compressed air, and the movable sleeve is connected to the inner wall of the cylinder through its piston. Only when the chamber is sufficiently sealed can the air pressure in the chamber drive the movable sleeve to move back and forth. However, the sealing accuracy is difficult to grasp, and the pneumatic rotary chuck is difficult to manufacture. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamping mechanism, aiming to solve the problems in the prior art that the pneumatic chuck has high requirements on sealing performance and the clamping mechanism is difficult to manufacture.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a clamping mechanism, comprising:

[0006] Mounting seat;

[0007] A clamping member, the clamping member comprising an elastic collet and a collet sleeve, the elastic collet is arranged on the mounting seat, the collet sleeve is sleeved on the elastic collet, and the collet sleeve can slide along the axial direction of the elastic collet to squeeze the elastic collet to close it or release the elastic collet to open it;

[0008] The driving member is arranged on the mounting seat and is located on the peripheral side of the elastic clamp. The power output end of the driving member is connected with the clamping sleeve to drive the clamping sleeve to slide.

[0009] In some embodiments, the driving member is provided in plurality, and the plurality of driving members are arranged at intervals along the circumference of the elastic clamp.

[0010] In some embodiments, the distances between any two adjacent driving members are equal.

[0011] In some embodiments, the driving member is a driving cylinder, one of a cylinder body and a piston rod of the driving cylinder is connected to the mounting seat, and the other is connected to the jacket.

[0012] In some embodiments, the jacket comprises a first jacket and a second jacket, the second jacket is sleeved with the elastic clamp, the first jacket is sleeved on the second jacket and forms a rotational fit with the second jacket, and the output end of the driving member is connected to the first jacket.

[0013] In some embodiments, a bearing is provided between the first jacket and the second jacket, the bearing is sleeved in the second jacket, the outer wall of the second jacket is connected to the inner ring of the bearing, and the inner wall of the first jacket is connected to the outer ring of the bearing.

[0014] In some embodiments, it also includes:

[0015] A sleeve is sleeved on the clamping member and fixedly connected to the mounting seat, and at least a portion of the sleeve and the driving member are located in the sleeve.

[0016] The utility model also provides a clamping device, which comprises a driving mechanism and the clamping mechanism described above.

[0017] In some embodiments, the driving mechanism includes a moving seat and a driving assembly, the mounting seat is connected to the moving seat, and the driving assembly drives the mounting seat to move by driving the moving seat.

[0018] In some embodiments, the mounting seat is provided with a through hole, a feeding tube is provided in the through hole, one end of the feeding tube is a feeding end, and one end of the feeding tube is a discharging end and is connected to the elastic chuck by docking.

[0019] In the clamping mechanism of the present application, a driving member is provided to be connected with the jacket, and the jacket is driven to slide by the driving member. Compared with the prior art, the clamping mechanism of the present application realizes driving of the jacket without high sealing requirements and reduces the manufacturing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a clamping device in one embodiment of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure of the clamping device in the embodiment. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) 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.

[0024] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. 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 utility model.

[0026] The present invention provides a clamping mechanism 100, referring to Figure 1 and Figure 2 , the clamping mechanism comprises:

[0027] Mounting seat 110;

[0028] The clamping member 120 includes an elastic clamp 121 and a jacket 122. The elastic clamp 121 is disposed on the mounting seat 110. The jacket 122 is sleeved on the elastic clamp 121. The jacket 122 can slide along the axis direction of the elastic clamp 121 to squeeze the elastic clamp 121 to close it or release the elastic clamp 121 to open it.

[0029] The driving member 130 is disposed on the mounting seat 110 and is located around the elastic clamp 121 . The power output end of the driving member 130 is connected to the clamping sleeve 122 to drive the clamping sleeve 122 to slide.

[0030] The clamping member 120 is used to clamp the long strip metal rod, and includes an elastic clamp 121 and a clamping sleeve 122. After the feeding mechanism conveys the metal rod to the clamping member 120, the elastic clamp 121 is used to clamp or release the metal rod.

[0031] Specifically, when the metal rod extends out of the elastic clamp 121 by a certain length, the driving member 130 pushes the sleeve 122 to slide forward, so that the sleeve 122 squeezes the elastic clamp 121 to clamp the metal rod, thereby fixing the metal rod, and then the metal rod is cut by the cutting tool. After the cutting is completed, the driving member 130 pulls the sleeve 122 to slide backward, so that the sleeve 122 releases the elastic clamp 121. When cutting is required, the metal rod is extended out of the elastic clamp 121 by a certain length again, and the above steps are repeated for the next cutting.

[0032] The power output end of the driving member 130 is connected to the jacket 122 to drive the jacket 122 to slide. Optionally, the driving member 130 can be a simple and inexpensive power element such as a cylinder, a solenoid valve or a common stepping motor. Of course, the driving member 130 can also be a servo motor that is easy to control, which does not hinder the utility model from achieving the purpose of stably driving the jacket 122 to slide.

[0033] In the clamping mechanism 100 of the present application, a driving member 130 is provided to be connected with the jacket 122, and the jacket 122 is driven to slide by the driving member 130. Compared with the prior art, the clamping mechanism 100 of the present application realizes the driving of the jacket 122 without high sealing requirements and reduces the manufacturing difficulty.

[0034] In some embodiments, a plurality of driving members 130 are provided, and the plurality of driving members 130 are arranged at intervals along the circumference of the elastic collet 121. It can be understood that when the plurality of driving members 130 are driven together, the collet 122 can be driven more easily, so that the collet 122 can clamp or release the elastic collet 121.

[0035] In some embodiments, the spacing between any two adjacent driving members 130 is equal. In this case, the jacket 122 is in a balanced state with the force of the driving member 130, and there is no jamming when driving the jacket 122, and the driving process is smoother.

[0036] In some embodiments, the driving member 130 is a driving cylinder, one of a cylinder body and a piston rod of the driving cylinder is connected to the mounting seat 110 , and the other is connected to the jacket 122 .

[0037] Optionally, the cylinder body of the driving cylinder is connected to the mounting seat 110, the piston rod of the driving cylinder is connected to the sleeve 122, the cylinder body is connected to a first air inlet pipe and a second air inlet pipe, air is ventilated to the first air inlet pipe, the air pressure in the cylinder body drives the piston to push the sleeve 122 to move forward, so that the sleeve 122 clamps the elastic clamp 121, and air is ventilated to the second air inlet pipe, so that the air pressure in the cylinder body drives the piston to pull the sleeve 122 backward, so that the sleeve 122 loosens the elastic clamp 121; or, the piston rod of the driving cylinder is connected to the mounting seat 110, and the cylinder body of the driving cylinder is connected to the sleeve 122.

[0038] In some embodiments, the jacket 122 includes a first jacket 122a and a second jacket 122b. The first jacket 122a is sleeved on the second jacket 122b and forms a rotational fit with the second jacket 122b. The output end of the driving member 130 is connected to the first jacket 122a.

[0039] Specifically, when the clamping member 120 is in a clamped state, the elastic clamp 121 abuts against the second sleeve 122b, and the rotation of the elastic clamp 121 drives the second sleeve 122b to rotate. It can be understood that the rotational cooperation between the first sleeve 122a and the second sleeve 122b reduces the friction coefficient between the second sleeve 122b and the elastic clamp 121, reduces the friction loss between the second sleeve 122b and the elastic clamp 121, and extends the service life of the elastic clamp 121.

[0040] In some embodiments, a bearing 123 is disposed between the first jacket 122a and the second jacket 122b. The bearing 123 is sleeved in the second jacket 122b. The outer wall of the second jacket 122b is connected to the inner ring of the bearing 123. The inner wall of the first jacket 122a is connected to the outer ring of the bearing.

[0041] Specifically, the first sleeve 122a is provided with a groove, which is annularly arranged and has an open end arranged at one end of the connecting driving member 130. The bearing 123 is placed in the groove, and the open end is clamped by a bearing retaining spring. When the elastic clamp 121 rotates to drive the second sleeve 122b to rotate, it can prevent the bearing from loosening and falling out.

[0042] In some embodiments, a sleeve 140 is further included, which is sleeved on the clamping member 120 and fixedly connected to the mounting seat 110 . At least a portion of the sleeve 122 and the driving member 130 are located in the sleeve 140 .

[0043] Among them, optionally, the sleeve 140 is plugged into the mounting seat 110, and a plurality of insert strips are circumferentially arranged at one end of the sleeve 140, and a plurality of insert holes are arranged on the mounting seat 110 to match the plurality of insert strips, and the plurality of insert strips are interference-fitted in the plurality of insert holes to realize the connection between the sleeve 140 and the mounting seat 110; or, the sleeve 140 is threadedly connected to the mounting seat 110. It can be understood that when the material extends out of the elastic chuck 121, the tool processes the material, and debris will be generated at this time. The setting of the sleeve 140 can prevent the debris from being stuck between the driving member 130 and the jacket 122, making the driving member 130 unable to drive, thereby ensuring the normal operation of the clamping mechanism 100.

[0044] The embodiment of the utility model also proposes a clamping device, which uses a clamping mechanism 100 to clamp the material during the material feeding process. Specifically, the clamping device includes a driving mechanism 150 and the clamping mechanism 100 described above. The output end of the driving mechanism 150 is connected to the clamping mechanism 100 to drive the clamping mechanism 100 to move. When the material needs to be placed in the clamping mechanism 100, the driving mechanism 150 drives the clamping mechanism 100 to the position corresponding to the material so that the material can be placed in the clamping mechanism 100.

[0045] In some embodiments, reference Figure 1 and Figure 2 The driving mechanism 150 includes a moving seat 151 and a driving assembly 152. The mounting seat 110 is connected to the moving seat 151. The driving assembly 152 drives the moving seat 151 to move, thereby driving the mounting seat 110 to move.

[0046] Among them, the driving component 152 includes a driving motor and a screw, a screw nut is mounted on the screw, and the driving motor drives the screw to rotate, so that the screw nut moves along the screw axis, thereby driving the clamping mechanism to move; optionally, the driving component 152 can also be replaced by a gear assembly or a pulley assembly.

[0047] In some embodiments, the mounting seat 110 is provided with a through hole, in which a feeding tube 111 is provided. One end of the feeding tube 111 is a feeding end, and the other end of the feeding tube 111 is a discharging end and is connected to the elastic clamp 121 .

[0048] Specifically, the loading mechanism transports the metal rod to be cut to the clamping device, and the end of the metal rod to be cut passes through the feed end and the discharge end in turn and reaches the elastic clamp 121. When the metal rod extends out of the elastic clamp 121 and reaches the length to be cut, the driving cylinder in the clamping mechanism 100 drives the sleeve 122 to move forward so that the elastic clamp 121 is retracted and clamps the metal rod.

[0049] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A clamping mechanism, characterized in that: include: Mounting seat; A clamping member, the clamping member comprising an elastic collet and a collet sleeve, the elastic collet is arranged on the mounting seat, the collet sleeve is sleeved on the elastic collet, and the collet sleeve can slide along the axial direction of the elastic collet to squeeze the elastic collet to close it or release the elastic collet to open it; The driving member is arranged on the mounting seat and is located on the peripheral side of the elastic clamp. The power output end of the driving member is connected with the clamping sleeve to drive the clamping sleeve to slide.

2. The clamping mechanism according to claim 1, characterized in that: A plurality of the driving members are provided, and the plurality of the driving members are arranged at intervals along the circumference of the elastic clamp.

3. The clamping mechanism according to claim 2, characterized in that: The distance between any two adjacent driving members is equal.

4. The clamping mechanism according to any one of claims 1 to 3, characterized in that: The driving member is a driving cylinder, one of a cylinder body and a piston rod of the driving cylinder is connected to the mounting seat, and the other is connected to the jacket.

5. The clamping mechanism according to claim 1, characterized in that: The jacket comprises a first jacket and a second jacket, the second jacket is sleeved with the elastic chuck, the first jacket is sleeved on the second jacket and forms a rotational fit with the second jacket, and the output end of the driving member is connected to the first jacket.

6. The clamping mechanism according to claim 5, characterized in that: A bearing is provided between the first jacket and the second jacket. The bearing is sleeved in the second jacket. The outer wall of the second jacket is connected to the inner ring of the bearing. The inner wall of the first jacket is connected to the outer ring of the bearing.

7. The clamping mechanism according to claim 1, characterized in that: Also includes: A sleeve is sleeved on the clamping member and fixedly connected to the mounting seat, and at least a portion of the sleeve and the driving member are located in the sleeve.

8. A clamping device, characterized in that: It comprises a driving mechanism and a clamping mechanism as described in any one of claims 1 to 7, wherein an output end of the driving mechanism is connected to the clamping mechanism to drive the clamping mechanism to move.

9. The clamping device according to claim 8, characterized in that: The driving mechanism comprises a moving seat and a driving assembly. The mounting seat is connected to the moving seat. The driving assembly drives the moving seat to move so as to drive the mounting seat to move.

10. The clamping device according to claim 9, characterized in that: The mounting seat is provided with a through hole, a feeding pipe is provided in the through hole, one end of the feeding pipe is a feeding end, and one end of the feeding pipe is a discharging end and is butt-connected with the elastic chuck.

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