CN216422588U

CN216422588U - Clamping jaw mechanism

Info

Publication number: CN216422588U
Application number: CN202123140392.6U
Authority: CN
Inventors: 赵宗礼; 赵哲; 熊萍; 赵凤侠; 赵宗旗; 雷井红; 张桥; 仝海亮
Original assignee: Benlong Automatic Technology Co ltd
Current assignee: Benlong Automatic Technology Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-03
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a clamping jaw mechanism relates to clamping jaw technical field, solves that clamping jaw mechanism design is complicated, do not have rotation function scheduling problem at present stage. The clamping jaw mechanism comprises a shell, a plurality of clamping jaws and a movable driving piece, wherein the clamping jaws are uniformly distributed and rotatably arranged in the circumferential direction of the shell, and the outer side ends of the clamping jaws form clamping openings; a clamping pull shaft is movably penetrated through the shell, one end of the clamping pull shaft extends into the inner side end of the clamping jaw far away from the clamping opening and forms an inclined plane with the inner side end of the clamping jaw to be matched with the clamping opening so as to shrink the clamping opening, and the other end of the clamping pull shaft is connected to the movable driving piece; the outer peripheries of the inner side ends of the clamping jaws are also provided with tension spring coils which have the tendency of contracting towards the inner diameter direction and are sleeved on the inner side ends of the clamping jaws in a hooping manner so as to unfold the clamping openings. The clamping jaw is matched with the inclined plane of the clamping pull shaft and elastically contracts through the pull spring coil to realize contraction and expansion of the clamping opening, so that the clamping jaw can be clamped and released.

Description

Clamping jaw mechanism

Technical Field

The utility model belongs to the technical field of the clamping jaw structure technique and specifically relates to a clamping jaw mechanism.

Background

In the automation equipment, the application of the clamping jaw mechanism is mature, and the clamping jaw mechanism is mainly used for grabbing and moving workpieces. The existing clamping jaw mechanism is complex in design, generally does not have the function of rotating around the clamping jaw mechanism, and is poor in universality and small in application range.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a clamping jaw mechanism solves that the clamping jaw mechanism design is complicated at present stage, does not have rotation function scheduling problem.

The technical scheme of the utility model: the clamping device comprises a shell, a plurality of clamping jaws and a movable driving piece, wherein the clamping jaws are uniformly distributed and rotatably arranged in the circumferential direction of the shell, and the outer side ends of the clamping jaws form clamping openings; a clamping pull shaft is movably penetrated through the shell, one end of the clamping pull shaft extends into the inner side ends of the clamping jaws far away from the clamping opening and is matched with the inclined surfaces formed at the inner side ends of the clamping jaws to shrink the clamping opening, and the other end of the clamping pull shaft is connected to the movable driving piece; the periphery of the inner side ends of the clamping jaws is also provided with a tension spring coil, and the tension spring coil has the tendency of contracting towards the inner diameter direction and is sleeved on the inner side ends of the clamping jaws in a hooping mode to expand the clamping openings.

By adopting the technical scheme, the clamping jaw is matched with the inclined plane of the clamping pull shaft and elastically contracts the pull spring coil to realize the contraction and expansion of the clamping opening, so that the clamping jaw can be clamped and released, and the clamping jaw has the advantages of ingenious design, simple, compact and reasonable structure and stable and reliable clamping.

The utility model discloses a further setting: the rotary shaft sleeve is movably sleeved on the periphery of the clamping pull shaft, and the rotary shaft sleeve is connected to the output end of the rotary driving piece.

By adopting the above further arrangement, the rotary driving piece can directly drive the shell and the clamping jaws to rotate by driving the rotary shaft sleeve, so that the clamping jaws have rotational freedom degree around the rotary shaft sleeve, the function of rotating the clamped workpiece is realized, and the clamping angle of the clamping jaws can be adjusted.

The utility model discloses a further setting again: a clamping spring is sleeved outside the clamping pull shaft, a spring cover plate is fixedly arranged at the end part of the clamping pull shaft, and two ends of the clamping spring respectively abut against the spring cover plate and the rotating shaft sleeve; the movable driving part is an air cylinder, and an output shaft of the movable driving part is arranged along the axial direction of the clamping pull shaft and is pressed on the spring cover plate.

By adopting the above further arrangement, the clamping spring is used for replacing rigid connection between the movable driving piece and the clamping pull shaft, the clamping spring is used for driving the clamping pull shaft to extend out of the shell to enable the clamping opening to contract, the movable driving piece operates to enable the clamping pull shaft to extend into the shell to enable the clamping opening to be unfolded through the pull spring coil, and therefore the phenomenon that the clamped workpiece is damaged due to overlarge clamping force of the clamping jaw caused by rigid connection is avoided.

The utility model discloses a still further set up: the end part of the clamping pull shaft is provided with a circular table part, the diameter of the circular table part is gradually reduced from outside to inside, the inner side surface of the inner side end of the clamping jaw is provided with an inclined sliding surface which is inclined inwards, and the inclined sliding surface and the circular table part are in sliding staggering to form inclined surface matching.

By adopting the above further arrangement, the circular table part can be matched with the clamping jaws in an inclined plane manner, so that the clamping jaws can be clamped.

The utility model discloses a still further set up: the inner side ends of the clamping jaws are provided with semicircular grooves which are inwards sunken in the radial direction of the tension spring coil, and the tension spring coil is arranged in the semicircular groove of each clamping jaw.

By adopting the above further arrangement, the semicircular groove is used for limiting the tension spring coil, so that the tension spring coil is prevented from being separated.

The utility model discloses a still further set up: the shell is provided with a pin shaft in a penetrating way, and the claw body of the clamping jaw is rotationally connected to the pin shaft.

By adopting the further arrangement, the clamping jaw can rotate around the pin shaft on the shell so as to open and close the clamping opening.

The utility model discloses a still further set up: and a positioning pin is fixedly arranged on the outer side end of the clamping jaw in a penetrating manner along the radial direction of the clamping pull shaft, and the positioning pin can abut against a workpiece clamped by the clamping jaw.

By adopting the above still further arrangement, when the clamping jaw clamps, the workpiece is abutted against the positioning pin nail, and the clamping process has a determined clamping depth.

The utility model discloses a still further set up: the rotary driving piece is a motor, a gear synchronous belt is arranged at the output end of the rotary driving piece, and the output end of the rotary driving piece is in transmission connection with the rotary shaft sleeve through the gear synchronous belt.

Adopt above-mentioned still further setting again, the motor passes through the gear hold-in range and drives rotatory axle sleeve rotatory to it is rotatory to drive the clamping jaw, reasonable in design.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic view of a part of the structure of an embodiment of the present invention;

FIG. 4 is an exploded view of a portion of the structure of an embodiment of the present invention;

wherein, 1, a shell; 2. a clamping jaw; 3. moving the driving member; 21. clamping the opening; 4. clamping the pull shaft; 5. a tension spring coil; 6. a rotary drive member; 7. rotating the shaft sleeve; 8. a clamping spring; 41. a spring cover plate; 42. a circular table portion; 22. an inclined slide surface; 23. a semicircular groove; 11. a pin shaft; 24. positioning a pin; 61. and (4) a gear synchronous belt.

Detailed Description

As shown in fig. 1-4, the clamping jaw mechanism includes a housing 1, a plurality of clamping jaws 2 and a movable driving member 3, wherein the plurality of clamping jaws 2 are uniformly distributed and rotatably installed on the circumferential direction of the housing 1, clamping openings 21 are formed at the outer side ends of the plurality of clamping jaws 2, and the number of the clamping jaws 2 is more than two. Still the activity runs through on casing 1 and presss from both sides tight axle 4, presss from both sides tight one end of axle 4 and stretches into a plurality of clamping jaw 2 and keep away from the inboard end of pressing from both sides mouth 21 and form the inclined plane cooperation with the inboard end of clamping jaw 2 and press from both sides mouth 21 with the shrink, presss from both sides the other end of drawing the axle 4 and connects on removing driving piece 3, makes removing driving piece 3 drive and presss from both sides tight axle 4 and remove. The periphery of the inner side ends of the clamping jaws 2 is also provided with a tension spring coil 5, and the tension spring coil 5 has the tendency of contracting towards the inner diameter direction and is sleeved on the inner side ends of the clamping jaws 2 in a hooping mode to expand the clamping openings 21. The clamping pull shaft 4 is moved on the movable driving piece 3, so that the clamping pull shaft 4 is matched with the inclined plane at the inner side end of the clamping jaw 2, and the clamping jaw 2 rotates to contract the clamping opening 21 to clamp a workpiece; the movable driving piece 3 moves the clamping pull shaft 4 in the opposite direction, under the contraction action of the pull spring coil 5, the clamping pull shaft 4 and the contact inclined plane at the inner side end of the clamping jaw 2 reset, and the clamping jaw 2 reversely rotates to unfold the clamping opening 21 to loosen the workpiece.

Still including rotary driving piece 6, an organic whole is connected with rotatory axle sleeve 7 on the casing 1, and rotatory axle sleeve 7 activity overcoat is in the week side of pressing from both sides tight axle 4 axle bodies of drawing, and rotatory axle sleeve 7 is connected in rotary driving piece 6's output. So, the rotatory driving piece 6 can drive the rotation of casing 1 through the rotatory axle sleeve 7 of drive, and casing 1 drives clamping jaw 2 rotatory, and clamping jaw 2 can arbitrary angle of adjustment.

Because the movable driving part 3 is rigidly connected with the clamping pull shaft 4, the clamping force of the clamping jaws 2 is determined by the output force of the movable driving part 3, and the clamped workpiece is easily damaged due to the overlarge clamping force of the clamping jaws 2 caused by unstable control or overlarge output force. In order to avoid the above situation, the clamping pull shaft 4 is sleeved with the clamping spring 8, the end part of the clamping pull shaft 4 is fixedly provided with the spring cover plate 41, and two ends of the clamping spring 8 respectively abut against the spring cover plate 41 and the rotating shaft sleeve 7; the movable driving part 3 is a cylinder, and an output shaft of the movable driving part 3 is arranged along the axial direction of the clamping pull shaft 4 and is pressed against the spring cover plate 41. The clamping pull shaft 4 is driven to move by the clamping spring 8, so that the clamping spring 8 with a proper specification can be selected to control the clamping force of the required clamping jaw 2; the clamping pull shaft 4 is pressed and pressed by an output shaft of the movable driving piece 3, the clamping spring 8 is compressed under the stress, and the clamping pull shaft 4 is reset and the clamping jaw 2 is released.

The clamping pull shaft 4 is provided with a circular table part 42 at the end part in the shell 1, the diameter of the circular table part 42 is gradually reduced from outside to inside, the inner side surface of the inner side end of the clamping jaw 2 is provided with an inward inclined slide surface 22, and the inclined slide surface 22 and the circular table part 42 are in sliding staggered inclined surface fit. When the clamping pull shaft 4 is inserted, the circular table part 42 is staggered with the inclined sliding surface 22 in a sliding manner, even the circular table part 42 is separated from contacting the inclined sliding surface 22, the pull spring coil 5 tightens the inner end of the clamping jaw 2 to enable the inner end of the clamping jaw 2 to retract, and the outer end of the clamping jaw 2 is clamped by the clamping opening 21 to loosen a workpiece; when the clamping pull shaft 4 retracts, the circular table part 42 and the inclined slide surface 22 slide and shift from opposite directions, the inner side end of the clamping jaw 2 expands, and the clamping opening 21 at the outer side end of the clamping jaw 2 retracts to clamp the workpiece.

The inside end of the clamping jaw 2 is provided with a semicircular groove 23, the semicircular groove 23 is inwards sunken in the radial direction of the tension spring coil 5, and the tension spring coil 5 is arranged in the semicircular groove 23 of each clamping jaw 2 so that the tension spring coil 5 is limited in the semicircular groove 23.

The shell 1 is provided with a pin shaft 11 in a penetrating way, the claw body of the clamping jaw 2 is connected to the pin shaft 11 in a rotating way, and the clamping jaw 2 can rotate around the pin shaft 11 on the shell 1 so as to open and close the clamping opening 21.

The outer end of the clamping jaw 2 is fixedly provided with a positioning pin 24 in a penetrating manner along the radial direction of the clamping pull shaft 4, when the clamping jaw 2 clamps, the positioning pin 24 can be abutted against a workpiece clamped by the clamping jaw 2, so that the workpiece can only reach the position of the positioning pin 24, and the clamping depth of the clamping jaw 2 is determined.

The rotary driving member 6 is a motor, a gear synchronous belt 61 is arranged at the output end of the rotary driving member 6, and the output end of the rotary driving member 6 is in transmission connection with the rotary shaft sleeve 7 through the gear synchronous belt 61. The motor drives the rotary shaft sleeve 7 to rotate through the gear synchronous belt 61, so that the clamping jaw 2 is driven to rotate.

Claims

1. A gripper mechanism, characterized by: the clamping device comprises a shell, a plurality of clamping jaws and a movable driving piece, wherein the clamping jaws are uniformly distributed and rotatably arranged in the circumferential direction of the shell, and the outer side ends of the clamping jaws form clamping openings; a clamping pull shaft is movably penetrated through the shell, one end of the clamping pull shaft extends into the inner side ends of the clamping jaws far away from the clamping openings and is matched with the inclined surfaces formed on the inner side ends of the clamping jaws to shrink the clamping openings, and the other end of the clamping pull shaft is connected to the movable driving piece; the outer periphery of the inner side ends of the clamping jaws is also provided with a tension spring coil, and the tension spring coil has the tendency of contracting towards the inner diameter direction and is sleeved on the inner side ends of the clamping jaws in a hooping mode to expand the clamping openings.

2. The jaw mechanism of claim 1, wherein: the rotary shaft sleeve is movably sleeved on the periphery of the clamping pull shaft, and the rotary shaft sleeve is connected to the output end of the rotary driving piece.

3. The jaw mechanism of claim 2, wherein: a clamping spring is sleeved outside the clamping pull shaft, a spring cover plate is fixedly installed at the end part of the clamping pull shaft, and two ends of the clamping spring are respectively abutted against the spring cover plate and the rotating shaft sleeve; the movable driving part is an air cylinder, and an output shaft of the movable driving part is axially arranged along the clamping pull shaft and is pressed on the spring cover plate in a propping mode.

4. Gripper mechanism according to claim 1 or 3, characterized in that: the clamping pull shaft is characterized in that the end part of the clamping pull shaft is provided with a circular table part, the diameter of the circular table part is gradually reduced from outside to inside, the inner side surface of the inner side end of the clamping jaw is provided with an inclined sliding surface which is inclined inwards, and the inclined sliding surface and the circular table part are staggered in a sliding mode to form inclined surface matching.

5. Gripper mechanism according to claim 1 or 3, characterized in that: the clamping device is characterized in that the inner side ends of the clamping jaws are provided with semicircular grooves, the semicircular grooves are inwards sunken in the radial direction of the tension spring coil, and the tension spring coil is arranged in the semicircular grooves of each clamping jaw.

6. Gripper mechanism according to claim 1 or 3, characterized in that: the shell is provided with a pin shaft in a penetrating mode, and the claw body of the clamping jaw is rotatably connected to the pin shaft.

7. Gripper mechanism according to claim 1 or 3, characterized in that: and a positioning pin is fixedly arranged on the outer side end of the clamping jaw in a penetrating manner along the radial direction of the clamping pull shaft, and the positioning pin can abut against a workpiece clamped by the clamping jaw.

8. Gripper mechanism according to claim 2, characterized in that: the rotary driving piece is a motor, a gear synchronous belt is arranged at the output end of the rotary driving piece, and the output end of the rotary driving piece is in transmission connection with the rotary shaft sleeve through the gear synchronous belt.