CN116330326A

CN116330326A - Mechanical arm

Info

Publication number: CN116330326A
Application number: CN202310334862.7A
Authority: CN
Inventors: 高建刚
Original assignee: Suzhou Pageto Intelligent Manufacturing Co ltd
Current assignee: Suzhou Pageto Intelligent Manufacturing Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-06-27

Abstract

The invention discloses a mechanical arm, which relates to the technical field of mechanical arms and comprises a mounting seat, wherein two movable grooves are symmetrically formed in the mounting seat, two slide ways are symmetrically formed in two side walls of each movable groove, a connecting arm is connected in the movable groove in a penetrating manner, two guide rods are symmetrically and fixedly connected to the two side walls of each connecting arm, the guide rods are in sliding contact with the slide ways, a driving assembly is arranged at the top of the mounting seat, a drag hook matched with the driving assembly is fixedly connected to the top of each connecting arm, transverse plates are fixedly connected to the bottom of each connecting arm, and two clamping arms are symmetrically and fixedly connected to the bottom of each transverse plate in a penetrating manner.

Description

Mechanical arm

Technical Field

The invention relates to the technical field of mechanical arms, in particular to a mechanical arm.

Background

With the progress of society, the manufacturing industry is rapidly developed, and the requirements on automation and mechanization are higher and higher. In industrial production and manufacturing, the development of manipulators is particularly rapid.

The Chinese patent with publication number CN106426261B discloses a manipulator, which is characterized by comprising a base, a bottom cover, a manipulator claw arm, a pinion, a motor, a large gear, a roller and a roller screw; the motor drives the large gear to rotate and drives the plurality of pinion gears to rotate in a matched mode, so that the roller screw rod can move up and down and drive a row of rollers to move in the sliding groove, and therefore the mechanical gripper arm can rotate around the fixed rod and achieve grabbing action. The problem that the structure is complicated, snatch stationarity is lower among the ordinary prior art can be solved to this patent to improve the precision of snatching of manipulator, reduce the complexity of manipulator.

However, the following problems are also present in the above patents: the mechanical arm can not control the force when clamping the object, the force is consistent when clamping the hard object and the soft object, when the object to be clamped is a paper box, the deformation of the soft object such as the paper box can be caused by overlarge force, the damage of the object is caused, the application range is small, and the clamping form can not be adjusted according to the type of the object.

Disclosure of Invention

The present invention is directed to a mechanical arm, which solves the above-mentioned problems in the prior art.

The technical scheme of the invention is as follows: the utility model provides a mechanical arm, includes the mount pad, two movable grooves have been seted up to the symmetry on the mount pad, two slides have been seted up to the symmetry on the movable groove both sides wall, through-connection has the linking arm in the movable groove, two guide bars of symmetry fixedly connected with on the linking arm both sides wall, the guide bar slide conflict in the slide, the mount pad top is provided with drive assembly, linking arm top fixedly connected with drive assembly complex drag hook, linking arm bottom fixedly connected with diaphragm, every equal symmetry in diaphragm bottom runs through two clamping arms of fixedly connected with.

Preferably, the driving assembly comprises a bidirectional telescopic cylinder, an elastic sleeve is fixedly connected to the bottom of the bidirectional telescopic cylinder, a groove is formed in the top of the mounting seat, the bottom of the elastic sleeve is fixedly connected with the groove, cylinder push rods are connected to two sides of the bidirectional telescopic cylinder, a connecting frame is fixedly connected to one end of the bidirectional telescopic cylinder, which is far away from the cylinder push rods, a pull plate is fixedly connected to the connecting frame, and the pull plate is located in the drag hook.

Preferably, one side of the pull plate, which is close to the bidirectional telescopic cylinder, is a right-angle side, one end of the pull plate, which is far away from the bidirectional telescopic cylinder, is an arc side, and the top of the connecting arm is provided with an arc-shaped guide surface.

Preferably, the inside transmission chamber that has seted up of centre gripping arm, centre gripping arm outer wall one side fixedly connected with colloid piece, have the arcwall face on the colloid piece, rotate in proper order from top to bottom on the transmission chamber inner wall and be connected with first pivot and second pivot, first pivot and second pivot are last respectively fixedly connected with first drive gear and the second drive gear, all fixedly connected with sprocket on first pivot and the second pivot periphery wall, two link to each other between the sprocket has the drive chain, mount pad bottom fixedly connected with a plurality of connecting plates, a plurality of connecting plates and a plurality of centre gripping arm one-to-one, connecting plate bottom fixedly connected with drive assembly, drive assembly is used for controlling first drive gear is rotatory, the sliding chamber has been seted up to centre gripping arm bottom, the sliding chamber top with the transmission chamber intercommunication, sliding connection has the picture peg in the sliding chamber, picture peg top fixedly connected with a plurality of first drive teeth, first drive teeth with second drive gear meshing is connected.

Preferably, a plug is fixedly connected to one end of the plugboard.

Preferably, the elastic sleeve comprises an outer sleeve and an inner sleeve, a spring is fixedly connected in the inner sleeve, the outer sleeve is embedded in the inner sleeve, the bottom of the outer sleeve is fixedly connected with the spring, the bottom of the inner sleeve is fixedly connected with the groove, and the top of the outer sleeve is fixedly connected with the bidirectional telescopic cylinder.

Preferably, the slide way is composed of a straight line section and an inclined section.

Preferably, the transmission assembly comprises a straight plate and an inclined plate, wherein the bottoms of the straight plate and the inclined plate are fixedly connected with a plurality of third transmission teeth, the top of the straight plate is fixedly connected with the connecting plate, the straight plate is far away from one end of the inclined plate, an adaptation groove is formed in the end, in the adaptation groove, of the inclined plate, the adaptation plate is elastically connected with the end, and the bottom of the adaptation plate is fixedly connected with a plurality of second transmission teeth.

Preferably, a plurality of openings for inserting the inclined plates are formed in the bottom of the mounting seat.

Preferably, the embedding groove has been seted up at the mount pad top, the embedding is connected with the apron in the embedding groove, apron periphery wall fixedly connected with fixed plate, the fixed plate with link to each other through the screw between the mount pad top face, fixedly connected with connecting seat on the mount pad lateral wall.

The invention provides a mechanical arm through improvement, and compared with the prior art, the mechanical arm has the following improvement and advantages:

the method comprises the following steps: according to the invention, when a hard object is clamped, the two cylinder push rods are controlled by the bidirectional telescopic cylinder to synchronously carry out back-to-back linear movement, so that the cylinder push rods drive the pull plates to synchronously move through the connecting frame, the pull plates push the top wall of the connecting arm, the guide rod is positioned at the leftmost side of the slideway at the moment, so that the connecting arm overturns along the circle center of the guide rod, the bottom of the connecting arm overturns towards the middle of the mounting seat, and the connecting arm drives the transverse plate and the clamping arms to synchronously overturn at the moment, so that a plurality of clamping arms can clamp the hard object in the middle of the mounting seat.

And two,: according to the invention, when soft objects are clamped, the clamping arms are abutted against the side walls of the paper box, the abutting pressure is not required to be too large, the deformation of the paper box is avoided, then the inserting plates are inserted from the bottom of the paper box and used for lifting the paper box, at the moment, the clamping arms play a limiting role on the paper box, and the inserting plates play a lifting role, so that a stable clamping effect can be provided for the paper box under the action of the clamping arms and the inserting plates, the deformation of the paper box is avoided, different clamping forms can be selected according to the characteristics of different objects, and the application range is wide.

And thirdly,: when the drag hook is pulled to horizontally move, the right-angle edge of the drag hook is abutted against the right-angle wall at the inner periphery of the drag hook, so that the drag hook and the connecting arm are effectively prevented from rotating, the connecting arm is always in a vertical state, when the drag hook pushes the connecting arm, the arc edge in the drag hook is abutted against the arc-shaped guide surface at the top of the connecting arm, and the connecting arm is enabled to be smoother when being overturned.

Fourth, it is: when the flexible object is clamped, the guide rod drives the connecting arm to synchronously incline upwards when entering the inclined section, meanwhile, the elastic sleeve is used for adapting to the change of the height of the bidirectional telescopic cylinder, the clamping arm and the inserting plate synchronously move upwards until the top of the carton is abutted against the bottom surface of the mounting seat to stop, at the moment, the two sides of the carton are abutted against the clamping arm, the top of the carton is abutted against the mounting seat, and the bottom of the carton is abutted against the inserting plate to support, so that a limiting space is formed, and the moving stability of the lifted carton is further improved.

Fifth, it is: the third transmission gear and the second transmission gear are in an alternate meshing state with the first transmission gear, so that the first transmission gear rotates in a meshing state when the first transmission gear moves horizontally, linear movement of the inserting plate is realized, and the first transmission gear and the second transmission gear are always in a tooth limiting state when the sliding cavity is not used due to the fact that the meshing state is in a continuous state, and therefore the inserting plate can be stably positioned in the sliding cavity, and falling of the inserting plate is avoided.

Sixth, it: when the hard object is clamped, the clamping arm is overturned, the first transmission gear can extrude the adapting plate, the adapting plate overturns towards the inside of the adapting groove, so that the overturning action of the clamping arm is adapted, the second transmission gear at the bottom of the adapting plate and the first transmission gear are in a meshed limiting state, and the plugboard is in a stable state.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first perspective of an overall structure according to the present invention;

FIG. 2 is a schematic view of a second perspective of the overall structure of the present invention;

FIG. 3 is a schematic cross-sectional view of a mounting block according to the present invention;

FIG. 4 is a schematic cross-sectional view of a clamp arm of the present invention;

FIG. 5 is a schematic perspective view of a clamping arm according to the present invention;

FIG. 6 is a schematic view of the invention with the gripper arms flipped;

fig. 7 is an enlarged view at a in fig. 4;

FIG. 8 is a schematic view of a clamping arm clamping a soft object according to the present invention;

fig. 9 is an enlarged view at B in fig. 8;

FIG. 10 is a schematic cross-sectional view of an elastic sleeve according to the present invention.

In the figure: 1. a mounting base; 101. a movable groove; 102. a groove; 2. a connecting arm; 201. a guide rod; 202. a drag hook; 203. a cross plate; 204. a clamping arm; 205. a transmission cavity; 206. a gel block; 207. a first rotating shaft; 208. a second rotating shaft; 209. a first transmission gear; 210. a second transmission gear; 211. a sprocket; 212. a drive chain; 213. a connecting plate; 214. a sliding chamber; 215. inserting plate; 216. a first drive tooth; 217. a plug; 218. a jacket; 219. an inner sleeve; 220. a spring; 3. a bidirectional telescopic cylinder; 301. a cylinder push rod; 302. a connecting frame; 303. pulling a plate; 304. right-angle sides; 305. arc edges; 306. an arc-shaped guide surface; 4. a straight line segment; 401. an inclined section; 5. a straight plate; 501. an inclined plate; 502. a third drive tooth; 503. an adaptation groove; 504. an adapter plate; 505. a second drive tooth; 506. an opening; 6. an embedding groove; 601. a cover plate; 602. a fixing plate; 603. and a connecting seat.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.

The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-10, the embodiment of the invention provides a mechanical arm, which comprises a mounting seat 1, two movable grooves 101 are symmetrically arranged on the mounting seat 1, two slide ways are symmetrically arranged on two side walls of the movable grooves 101, a connecting arm 2 is connected in a penetrating manner in the movable grooves 101, two guide rods 201 are symmetrically and fixedly connected on two side walls of the connecting arm 2, the guide rods 201 slide and abut against the slide ways, a driving component is arranged at the top of the mounting seat 1, a drag hook 202 matched with the driving component is fixedly connected at the top of the connecting arm 2, a transverse plate 203 is fixedly connected at the bottom of the connecting arm 2, two clamping arms 204 are symmetrically and fixedly connected at the bottom of each transverse plate 203, and the driving component is used for pulling the drag hook 202 or pushing the connecting arm 2, so that the connecting arm 2 can horizontally move or overturn along the circle center of the guide rods 201, and thus two clamping actions are respectively applicable to soft objects and hard objects.

The driving assembly comprises a bidirectional telescopic cylinder 3, an elastic sleeve is fixedly connected to the bottom of the bidirectional telescopic cylinder 3, a groove 102 is formed in the top of the mounting seat 1, the bottom of the elastic sleeve is fixedly connected with the groove 102, cylinder push rods 301 are connected to two sides of the bidirectional telescopic cylinder 3, a connecting frame 302 is fixedly connected to one end, away from the bidirectional telescopic cylinder 3, of the cylinder push rods 301, a pulling plate 303 is fixedly connected to the connecting frame 302, and the pulling plate 303 is located in the drag hook 202.

The side of arm-tie 303, which is close to two-way flexible cylinder 3, is right angle limit 304, and the one end of arm-tie 303, which is far away from two-way flexible cylinder 3, is arc limit 305, and arc guide surface 306 is provided at the top of connecting arm 2, and when draw hook 202 is pulled by arm-tie 303 to move horizontally, right angle limit 304 of arm-tie 303 is in conflict with the right angle wall of the inner periphery of draw hook 202, thereby effectively avoiding draw hook 202 and connecting arm 2 from rotating, thereby ensuring that connecting arm 2 is always in a vertical state, and when arm-tie 303 pushes connecting arm 2, arc limit 305 in arm-tie 303 is in conflict with arc guide surface 306 at the top of connecting arm 2, so that connecting arm 2 is smoother when overturning occurs.

The inside transmission chamber 205 that has seted up of arm 204, arm 204 outer wall one side fixedly connected with colloid piece 206, have the arcwall face on the colloid piece 206, the arcwall face in the colloid piece 206 can strengthen the centre gripping stability to the stereoplasm article, first pivot 207 and second pivot 208 are connected with in proper order from top to bottom on the transmission chamber 205 inner wall, first pivot 207 and second pivot 208 are last respectively fixedly connected with first drive gear 209 and the second drive gear 210, all fixedly connected with sprocket 211 on first pivot 207 and the second pivot 208 periphery wall, be connected with drive chain 212 between two sprockets 211, mount pad 1 bottom fixedly connected with a plurality of connecting plates 213, a plurality of connecting plates 213 and a plurality of arm 204 one-to-one, connecting plate 213 bottom fixedly connected with drive assembly, drive assembly is used for controlling first drive gear 209 rotation, slide chamber 214 has been seted up to arm 204 bottom, slide chamber 214 top and transmission chamber 205 intercommunication, slide chamber 214 is middle slide connection has picture peg 215, picture peg 215 top fixedly connected with a plurality of first drive teeth 216, first drive teeth 216 and second drive gear 210 are connected with meshing.

A plug 217 is fixedly connected to one end of the insert plate 215, and the plug 217 facilitates insertion of the insert plate 215 into the bottom of the carton.

Specific: when clamping a hard object, the bidirectional telescopic cylinder 3 controls the two cylinder push rods 301 to synchronously perform backward linear movement, so that the cylinder push rods 301 drive the pull plates 303 to synchronously move through the connecting frame 302, the pull plates 303 push the top wall of the connecting arm 2, the guide rods 201 are positioned at the leftmost side of the slideway, the connecting arm 2 is enabled to overturn along the circle center of the guide rods 201, the bottom of the connecting arm 2 is enabled to overturn towards the middle of the mounting seat 1, the connecting arm 2 drives the transverse plate 203 and the clamping arms 204 to synchronously overturn, and therefore the plurality of clamping arms 204 can clamp the hard object in the middle of the mounting seat 1;

when a soft object is clamped, such as a paper box, the two cylinder push rods 301 are controlled by the bidirectional telescopic air cylinder 3 to synchronously perform opposite linear movement, so that the air cylinder push rods 301 drive the pull plates 303 to synchronously move, the pull plates 303 pull the connecting arms 2 to horizontally move towards the middle part of the mounting seat 1 through the draw hooks 202, the connecting arms 2 are always kept in a vertical state, and therefore the clamping arms 204 at the bottoms of the connecting arms 2 are also kept in a vertical state, and the side walls of the connecting arms 2 can be attached to the outer walls of the paper box;

the connecting arm 2 moves horizontally and simultaneously, the first transmission gear 209 rotates under the action of the transmission assembly, so that the first transmission gear 209 drives the second transmission gear 210 to rotate under the action of the two chain wheels 211 and one transmission chain 212, and the second transmission gear 210 rotates and drives the inserting plate 215 to slide horizontally in the sliding cavity 214, so that the inserting plate 215 can be inserted from the bottom of the carton, the bottom of the carton is supported, and the stability of clamping the carton is improved;

it can be understood that when the soft object is clamped, the plurality of clamping arms 204 are abutted against the side wall of the carton, the abutting pressure is not required to be too large, the deformation of the carton is avoided, then the plurality of inserting plates 215 are inserted from the bottom of the carton and used for lifting the carton, at the moment, the plurality of clamping arms 204 play a limiting role on the carton, and the plurality of inserting plates 215 play a lifting role, so that a stable clamping effect can be provided for the carton under the actions of the plurality of clamping arms 204 and the plurality of inserting plates 215, and the deformation of the carton is avoided;

after the clamping of the carton is completed, the inserting plate 215 resets along with the resetting action of the cylinder push rod 301, so that the exposed inserting plate 215 is prevented from interfering the overturning and clamping of the hard object by the clamping arm 204.

The elastic sleeve comprises an outer sleeve 218 and an inner sleeve 219, a spring 220 is fixedly connected in the inner sleeve 219, the outer sleeve 218 is embedded in the inner sleeve 219, the bottom of the outer sleeve 218 is fixedly connected with the spring 220, the bottom of the inner sleeve 219 is fixedly connected with the groove 102, and the top of the outer sleeve 218 is fixedly connected with the bidirectional telescopic cylinder 3.

The slide consists of straight sections 4 and inclined sections 401.

Specific: when the soft object is clamped, when the guide rod 201 enters the inclined section 401, the guide rod 201 drives the connecting arm 2 to synchronously incline upwards, and meanwhile, the elastic sleeve is used for adapting to the change of the height of the bidirectional telescopic cylinder 3;

the connecting arm 2 moves upwards, the clamping arm 204 and the plugboard 215 move upwards synchronously until the top of the carton collides with the bottom surface of the mounting seat 1, at the moment, the two sides of the carton are collided by the clamping arm 204, the top of the carton is collided by the mounting seat 1, and the bottom of the carton is collided and supported by the plugboard 215, so that a limiting space is formed, and the stability of lifting the carton is further improved.

The transmission assembly comprises a straight plate 5 and an inclined plate 501, wherein the bottoms of the straight plate 5 and the inclined plate 501 are fixedly connected with a plurality of third transmission teeth 502, the top of the straight plate 5 is fixedly connected with a connecting plate 213, an adapting groove 503 is formed in one end, far away from the inclined plate 501, of the straight plate 5, an adapting plate 504 is elastically rotated and connected in the adapting groove 503, the elastic rotation is connected with the adapting plate 504, the connection is used for the inversion and the eversion reset actions of the adapting plate 504, the bottom of the adapting plate 504 is fixedly connected with a plurality of second transmission teeth 505, and a plurality of openings 506 for the insertion of the inclined plate 501 are formed in the bottom of the mounting seat 1.

Specifically, the third transmission gear 502 and the second transmission gear 505 are in an alternately meshed state with the first transmission gear 209, so that when the first transmission gear 209 moves horizontally, the first transmission gear 209 rotates in the meshed state, thereby realizing the linear movement of the insert plate 215, and because the meshed state is in a continuous state, when the invention is not used, the first transmission gear 209 and the second transmission gear 210 are always in a tooth limiting state, thereby the insert plate 215 can be stably positioned in the sliding cavity 214, and the drop of the insert plate 215 is avoided;

when the hard object is clamped, referring to fig. 7, after the clamping arm 204 is turned over, the first transmission gear 209 presses the adapting plate 504, the adapting plate 504 turns over towards the adapting groove 503, so as to adapt to the turning action of the clamping arm 204, and the second transmission gear 505 at the bottom of the adapting plate 504 is in a state of engaging with the first transmission gear 209, so that the insert plate 215 is in a stable state.

The embedded groove 6 has been seted up at mount pad 1 top, and the embedding is connected with apron 601 in the embedded groove 6, and apron 601 periphery wall fixedly connected with fixed plate 602 links to each other through the screw between fixed plate 602 and the mount pad 1 top face, fixedly connected with connecting seat 603 on a mount pad 1 lateral wall, and apron 601 is used for sealing the top of mount pad 1, blocks external debris, and connecting seat 603 is used for the installation work of mount pad 1.

Working principle: when clamping a hard object, the bidirectional telescopic cylinder 3 controls the two cylinder push rods 301 to synchronously perform backward linear movement, so that the cylinder push rods 301 drive the pull plates 303 to synchronously move through the connecting frame 302, the pull plates 303 push the top wall of the connecting arm 2, the guide rods 201 are positioned at the leftmost side of the slideway, the connecting arm 2 is enabled to overturn along the circle center of the guide rods 201, the bottom of the connecting arm 2 is enabled to overturn towards the middle of the mounting seat 1, the connecting arm 2 drives the transverse plate 203 and the clamping arms 204 to synchronously overturn, and therefore the plurality of clamping arms 204 can clamp the hard object in the middle of the mounting seat 1;

when a soft object is clamped, for example, a paper box, at the moment, the two cylinder push rods 301 are controlled by the bidirectional telescopic air cylinder 3 to synchronously perform opposite linear movements, so that the cylinder push rods 301 drive the pull plates 303 to synchronously move, the pull plates 303 pull the connecting arms 2 to horizontally move towards the middle of the mounting seat 1 through the draw hooks 202, the connecting arms 2 are always kept in a vertical state, so that the clamping arms 204 at the bottoms of the connecting arms 2 are kept in a vertical state, the side walls of the connecting arms 2 can be attached to the outer walls of the paper box, the first transmission gear 209 rotates under the action of the transmission assembly while the connecting arms 2 horizontally move, and the second transmission gear 210 is driven to rotate under the action of the two chain wheels 211 and one transmission chain 212, and the second transmission gear 210 rotates to drive the plugboard 215 to horizontally slide in the sliding cavity 214, so that the plugboard 215 can be inserted from the bottom of the paper box, and the bottom of the paper box is supported, and the stability of clamping the paper box is improved;

along with the translation action of guide bar 201 in the slip, when guide bar 201 enters into inclined section 401, guide bar 201 drives linking arm 2 synchronous slope upward movement, linking arm 2 upward movement, clamping arm 204 and picture peg 215 can move upward in step this moment, until the carton top is inconsistent with mount pad 1 bottom face and stops, the carton both sides are inconsistent by clamping arm 204 this moment, the carton top is contradicted by mount pad 1, the carton bottom is contradicted by picture peg 215 and is supported to form a spacing space, further improve the stability of lifting the carton and remove.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a mechanical arm, includes mount pad (1), its characterized in that: two movable grooves (101) are symmetrically formed in the mounting seat (1), two sliding ways are symmetrically formed in two side walls of the movable grooves (101), connecting arms (2) are connected to the movable grooves (101) in a penetrating mode, two guide rods (201) are symmetrically and fixedly connected to the two side walls of the connecting arms (2), the guide rods (201) slide and abut against the sliding ways, a driving assembly is arranged at the top of the mounting seat (1), the top of the connecting arms (2) is fixedly connected with a draw hook (202) matched with the driving assembly, a transverse plate (203) is fixedly connected to the bottom of the connecting arms (2), and two clamping arms (204) are symmetrically and fixedly connected to the bottom of the transverse plate (203).

2. A robotic arm as claimed in claim 1, wherein: the driving assembly comprises a bidirectional telescopic cylinder (3), an elastic sleeve is fixedly connected to the bottom of the bidirectional telescopic cylinder (3), a groove (102) is formed in the top of the mounting seat (1), the bottom of the elastic sleeve is fixedly connected with the groove (102), cylinder push rods (301) are connected to two sides of the bidirectional telescopic cylinder (3), a connecting frame (302) is fixedly connected to one end of the bidirectional telescopic cylinder (3) in a separating mode, a pulling plate (303) is fixedly connected to the connecting frame (302), and the pulling plate (303) is located in the drag hook (202).

3. A robotic arm as claimed in claim 2, wherein: one side of the pulling plate (303) close to the bidirectional telescopic cylinder (3) is a right-angle side (304), one end of the pulling plate (303) far away from the bidirectional telescopic cylinder (3) is an arc side (305), and the top of the connecting arm (2) is provided with an arc-shaped guide surface (306).

4. A robotic arm as claimed in claim 1, wherein: the inside transmission chamber (205) of seting up of centre gripping arm (204), centre gripping arm (204) outer wall one side fixedly connected with colloid piece (206), have the arcwall on colloid piece (206), rotate in proper order from top to bottom on the inner wall of transmission chamber (205) and be connected with first pivot (207) and second pivot (208), first transmission gear (209) and second transmission gear (210) are connected with respectively in first pivot (207) and second pivot (208), all be connected with sprocket (211) on first pivot (207) and second pivot (208) periphery wall, two link to each other between sprocket (211) drive chain (212), mount pad (1) bottom fixedly connected with a plurality of connecting plates (213), a plurality of connecting plates (213) and a plurality of centre gripping arm (204) one-to-one, connecting plate (213) bottom fixedly connected with drive assembly, drive assembly is used for controlling first transmission gear (209) are rotatory, sprocket (214) are seted up in centre gripping arm (204) bottom, slide cavity (214) are connected with sprocket (215), slide insert plate (215) are connected with in slide cavity (214) top (215), the first transmission gear (216) is in meshed connection with the second transmission gear (210).

5. A robotic arm as claimed in claim 4, wherein: and a plug (217) is fixedly connected to one side end of the plugboard (215).

6. A robotic arm as claimed in claim 2, wherein: the elastic sleeve comprises an outer sleeve (218) and an inner sleeve (219), a spring (220) is fixedly connected in the inner sleeve (219), the outer sleeve (218) is embedded in the inner sleeve (219), the bottom of the outer sleeve (218) is fixedly connected with the spring (220), the bottom of the inner sleeve (219) is fixedly connected with the groove (102), and the top of the outer sleeve (218) is fixedly connected with the bidirectional telescopic cylinder (3).

7. A robotic arm as claimed in claim 1, wherein: the slideway consists of a straight line section (4) and an inclined section (401).

8. A robotic arm as claimed in claim 4, wherein: the transmission assembly comprises a straight plate (5) and an inclined plate (501), wherein a plurality of third transmission teeth (502) are fixedly connected to the bottoms of the straight plate (5) and the inclined plate (501), the top of the straight plate (5) is fixedly connected with a connecting plate (213), an adaptation groove (503) is formed in the end, away from the inclined plate (501), of the straight plate (5), an adaptation plate (504) is elastically connected in the adaptation groove (503), and a plurality of second transmission teeth (505) are fixedly connected to the bottom of the adaptation plate (504).

9. A robotic arm as claimed in claim 8, wherein: a plurality of openings (506) for inserting the inclined plates (501) are formed in the bottom of the mounting seat (1).

10. A robotic arm as claimed in claim 1, wherein: the embedded groove (6) has been seted up at mount pad (1) top, embedding is connected with apron (601) in embedded groove (6), apron (601) periphery wall fixedly connected with fixed plate (602), fixed plate (602) with link to each other through the screw between mount pad (1) top face, fixedly connected with connecting seat (603) on a lateral wall of mount pad (1).