CN218663831U - Feeding device - Google Patents

Abstract

The utility model provides a feeding device belongs to automatic feeding machine technical field. It has solved the current relatively poor problem of double-deck work or material rest during operation stability. This loading attachment includes the material loading platform, be provided with on the material loading platform and snatch mechanism and two supports, be provided with drive assembly on the material loading platform, all be equipped with connecting portion on two supports, the last mounting panel that is fixed with of drive assembly, be fixed with linear guide and driving piece on the mounting panel, it is provided with the slider to slide on the linear guide, be fixed with the connecting piece on the slider, be connected with gyro wheel two on the connecting piece, positioning groove has all been seted up on the connecting portion, gyro wheel two on the connecting piece can block into in the positioning groove, drive assembly passes through gyro wheel two and positioning groove's joint cooperation drives this support removal. The connecting piece of this application is fixed on linear guide's slider, and driving piece promotes the connecting piece and enables its guide movement along linear guide, and the design makes the connecting piece remove very smoothly, and stability is fabulous like this.

Description

Feeding device

Technical Field

The utility model belongs to the technical field of automatic feeding machine, a loading attachment is related to.

Background

The manipulator loading and unloading have the advantage of high stability, and are commonly used for production and assembly of workpieces, for example, the bulletin numbers are as follows: the CN215968724U patent discloses a truss manipulator, which is widely used, and a tray is often used in combination with the manipulator, and is mainly used for supplying a workpiece to be processed to the manipulator. Manipulator generally collocates in the prior art and goes up the work or material rest and use together, be as application number: 202221383039.2, the content of the double-layer material rack introduces that the material loading rack comprises two moving frames with different heights, each moving frame is provided with a disc of workpieces, a driving mechanism on the material loading rack can drive one of the material loading racks to move to the position below a manipulator to allow the manipulator to grab the workpieces on a material tray, an empty tray is moved out after the workpieces in the material tray are grabbed, the other disc of workpieces is driven to grab, a worker can fill the empty tray to wait for grabbing next time, and the material loading efficiency is improved by means of reciprocating replacement.

But the phenomenon of chuck or idle work can appear when the aforesaid double-deck work or material rest uses, and the main reason is that the last actuating mechanism on the work or material rest only has one, thereby needs set up coupling mechanism on actuating mechanism to be connected with an independent removal frame and drive the removal frame and remove. The connection mechanism is generally clamped, namely a movable plate which can move left and right through the driving of an air cylinder is arranged, the movable plate moves left and is inserted into one feeding frame, the movable plate moves right and is inserted into the other feeding frame, the movable plate is further installed in the installation seat to guarantee the moving accuracy and stability of the movable plate, a guide hole is formed in the installation seat, the movable plate is arranged in the guide hole in a sliding mode, and the moving accuracy is improved through guiding and moving along the inner wall of the guide hole. However, because the movable plate is in rigid contact with the mounting seat, when the movable plate drives the feeding frame to move, a large friction force is generated between the movable plate and the mounting seat, so that the cylinder is easily clamped when the movable plate is driven to move. The phenomenon of clamping can occur when the movable plate is clamped and cannot move, and the phenomenon of moving of an empty tray can occur when the movable plate is rigidly clamped with the mounting seat after the movable plate is disengaged from the feeding frame. If the phenomenon of foretell chuck and empty dish frequently appears at double-deck work or material rest material loading in-process for the machine operation is very unstable, then can lead to the material loading and not smooth and easy, needs the staff to monitor for a long time moreover, troubleshooting.

Disclosure of Invention

The utility model aims at solving the problems existing in the prior art and providing a feeding device. The double-layer rack solves the technical problem that an existing double-layer rack is poor in stability during working.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a loading attachment, includes the material loading platform, be provided with on the material loading platform and snatch mechanism and two supports, be provided with on the material loading platform and snatch mechanism direction reciprocating motion's drive assembly, all be equipped with connecting portion and two connecting portions on two supports and be located the opposition side, the last mounting panel that is fixed with of drive assembly, be fixed with linear guide one and driving piece on the mounting panel, the slip is provided with the slider on the linear guide one, be fixed with the connecting piece on the slider, the connecting piece all rotates on the both ends on the linear guide length direction of edge and is connected with gyro wheel two, positioning groove has all been seted up on the connecting portion, the driving piece can drive the connecting piece along the slip of linear guide one direction and make the two card of gyro wheel on the connecting piece slip direction go into positioning groove in, drive assembly passes through gyro wheel two and drives this support removal with positioning groove's joint cooperation.

This application makes linkage between drive assembly and the support through connecting piece and connecting portion grafting cooperation, the connecting piece of this application is fixed on linear guide's slider, driving piece promotion connecting piece enables it along a linear guide direction removal, the design makes the connecting piece remove and becomes very smooth and easy like this, the phenomenon that the card pauses can not appear, keep smooth and easy running state always, and the fine holding power of connecting piece also can be given to the slider on the linear guide, make it remove also very smooth and easy when providing better holding power, let loading attachment can not appear pausing when the operation, the condition of removing the obstacles, by a wide margin improvement this loading attachment stability at the during operation.

The utility model provides a positioning groove has been seted up on the connecting portion, be provided with gyro wheel two on the connecting piece, go into the linkage that realizes between connecting piece and the connecting portion in the positioning groove through two cards of gyro wheel, the design of gyro wheel two can let the cooperation between connecting piece and the connecting portion more smooth and easy, even gyro wheel two is aimed at with positioning groove is incomplete, along with the release of cylinder one, the gyro wheel can support to lean on in the positioning groove notch or roll into positioning groove along with the cylinder one promotes along the cell wall of positioning groove, the design further improves this loading attachment stability at the during operation like this.

In foretell loading attachment, the driving piece is cylinder one, be fixed with linear guide two on the mounting panel, the sliding is provided with the ejector pad one that can link with the connecting piece on linear guide two, the push rod of cylinder one is connected on ejector pad one and can promote ejector pad one along two guide movements of linear guide.

This application driving piece is cylinder one, promote ejector pad one through cylinder one and remove, ejector pad one removes to drive the connecting piece simultaneously and removes to cooperate with the connecting portion on the support, ejector pad one of this application sets up on linear guide two, can let ejector pad one's removal can not appear blocking through linear guide two, and is more smooth and easy, and can let ejector pad one remove also more accurately under linear guide two's direction, it is more accurate when letting to peg graft between connecting piece and the support and cooperate, further improve stability.

In foretell loading attachment, the orientation of linear guide two is mutually perpendicular with the orientation of linear guide one, set up the stroke groove one that the orientation slope of relative linear guide two set up on the connecting piece, it is provided with the gyro wheel one of card income stroke inslot to rotate on the ejector pad one, gyro wheel one can drive the connecting piece through moving along stroke groove one and along linear guide one guide movement.

The first connecting piece and the first pushing block are linked through the cooperation of the first stroke groove and the first roller, the moving direction of the first pushing block and the moving direction of the first connecting piece are perpendicular to each other, the arrangement direction of the first stroke groove is inclined, the first roller can convert the moving direction of the first pushing block into the moving direction of the first connecting piece through the moving of the first roller along the first stroke groove when the first pushing block moves, the roller can overcome certain friction force through rolling when the first roller is guided to move along the groove wall of the first stroke groove, the roller is prevented from being blocked in rigid contact with the inner wall of the first stroke groove, the linkage between the first connecting piece and the first pushing block is quite smooth, and the stability is further improved.

In the feeding device, the positioning groove is semicircular and the size of the positioning groove is matched with that of the second roller.

In the feeding device, four parallel linear guide rails III are distributed on the feeding platform, two ends of one support are respectively arranged on the two innermost linear guide rails III in a sliding manner, two ends of the other support are respectively arranged on the two outermost linear guide rails III in a sliding manner, and the driving assembly is located between the two innermost linear guide rails and can move along the length direction of the linear guide rails III.

Two supports of this application all connect on linear guide, and every leg joint has two linear guide, and the design can guarantee two supports and stably remove like this, and including a support moreover, a support is outside, and both do not mutually disturb, and the function is stable.

In the above feeding device, a limiting mechanism capable of limiting the movement of any one of the supports is fixed between the end portions of the two innermost linear guide rails three on the feeding platform.

This application has still arranged stop gear in the one end of material loading platform, and stop gear can fix it when one of them support needs to pack, prevents to produce to remove at the in-process support of material loading and influences the filler, and the design has further improved stability like this.

In foretell loading attachment, stop gear includes linear guide four and cylinder two, linear guide four the orientation with linear guide three the orientation is mutually perpendicular, the slip is provided with the movable plate on the linear guide four, cylinder two can drive the movable plate along the four direction removal of linear guide, linear guide four both sides are rotated respectively and are provided with gyro wheel three, all set up on two supports can with the three joint cooperation spacing recesses of gyro wheel, and two spacing recesses are located opposite side, the movable plate can be through removing with one of them spacing recess joint.

This stop gear adopts the movable plate to fix a position the support in the four removal insert spacing recesses on the support along linear guide, lets the movable plate keep with spacing recess complex trend through the cylinder, can let the support remain stable like this when the material loading.

In foretell loading attachment, one side of cylinder two is provided with and moves with four vertically linear guide five of linear guide, it is provided with ejector pad two to slide on the linear guide five, the push rod of cylinder two is connected on ejector pad two and can drive ejector pad two along five guide movements of linear guide, it is provided with gyro wheel four to rotate on the ejector pad two, set up the stroke groove two that sets up for the slope of five orientation of linear guide on the movable plate, gyro wheel four blocks are established in stroke groove two and can be driven the movable plate through moving along two guide movements of stroke groove and move along linear guide four.

The moving plate of this design can cooperate with the spacing recess on two supports respectively along four both ends movements of linear guide, the moving direction of moving plate and the moving direction of ejector pad two are mutually perpendicular, so the direction of arranging of stroke groove two is the slope setting, the moving direction that can convert ejector pad two into the moving direction of moving plate along the two movements of stroke groove of gyro wheel four when ejector pad two remove, the design of gyro wheel four can let it overcome certain frictional force through rolling when the cell wall direction of stroke groove two removes, prevent that the card from appearing in gyro wheel four and the rigid contact of two inner walls of stroke groove, make the linkage between moving plate and the ejector pad two become very smooth and easy, further improvement stability.

In the feeding device, the driving assembly comprises a motor and a sliding plate, a third stroke groove is formed between two innermost linear guide rails on the feeding platform, six linear guide rails are arranged on the bottom surface of the feeding platform and located on two sides of the third stroke groove, two ends of the sliding plate are connected to the six linear guide rails respectively and can slide along the six linear guide rails in a guiding manner, a rack is fixed on the bottom surface of the feeding platform and located between the six linear guide rails, the motor is fixed on the sliding plate, an output shaft of the motor is connected with a gear matched with the rack, and a linkage part fixed with the mounting plate and penetrating through the third stroke groove is protruded on the sliding plate.

Compared with the prior art, the product has the advantages that:

1. the connecting piece of this application is fixed on linear guide's slider, driving piece promotes the connecting piece and enables it along a linear guide direction removal, the design makes the connecting piece remove and becomes very smooth and easy like this, the phenomenon that the card pauses can not appear, let loading attachment keep the state of smooth and easy operation always, the fine holding power of connecting piece also can be given to the slider on linear guide in addition, it also very smooth and easy to make its removal when providing better holding power, design improvement by a wide margin like this and at the stability of during operation.

2. The utility model provides a connecting portion are positioning groove, be provided with gyro wheel two on the connecting piece, go into the linkage that realizes between connecting piece and the connecting portion in the positioning groove through two cards of gyro wheel, the design of gyro wheel two can let the cooperation between connecting piece and the connecting portion more smooth and easy, even the condition that deviation appears in two and the misalignment of positioning groove of gyro wheel, along with the release of cylinder one, the gyro wheel can support to roll into the positioning groove notch along with a promotion of cylinder in, design like this and further improve this loading attachment stability at the during operation.

Drawings

FIG. 1 is an overall assembly view of the present invention;

FIG. 2 is an assembled view of the present invention with the clamping arms removed;

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

fig. 4 is a structural view of the drive assembly of the present invention;

FIG. 5 is a partial structural view of the drive assembly of the present invention;

FIG. 6 is a structural view of the drive assembly of the present invention with the connector removed;

fig. 7 is a structural view of the limiting mechanism of the present invention;

fig. 8 is a partial structural view of the limiting mechanism of the present invention;

fig. 9 is a schematic view of the rack and motor of the present invention;

fig. 10 is a schematic view of another angular fit of the rack and motor of the present invention;

fig. 11 is a schematic view of the matching relationship between the sliding plate and the mounting plate of the present invention.

In the figure, 1, a feeding platform; 11. a third linear guide rail; 12. a stroke groove III; 2. a drive assembly; 21. mounting a plate; 22. a first linear guide rail; 23. a slider; 24. a connecting member; 241. a first stroke groove; 242. a second roller; 25. a drive member; 251. a first cylinder; 26. a second linear guide rail; 27. pushing a first block; 271. a first roller; 28. a rack; 29. a motor; 291. a gear; 3. a support; 31. a flat plate; 32. a slider; 33. a limiting groove; 34. a connecting portion; 341. a positioning groove; 4. a limiting mechanism; 41. a linear guide rail IV; 42. a second air cylinder; 43. moving the plate; 431. a third roller; 432. a second stroke groove; 44. a linear guide rail V; 45. a second push block; 5. a linear guide rail six; 6. a sliding plate; 7. a gripping mechanism; 8. a linkage member.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-11, the feeding device includes a feeding platform 1, a clamping mechanism 7, a driving assembly 2, and two supports 3, the clamping mechanism 7 may be a mechanical truss clamping arm, each support 3 is composed of a flat plate 31 and sliding blocks 32, and two sliding blocks 32 are fixed on two sides of the bottom surface of the flat plate 31. Four parallel linear guide rails three 11 are distributed on the feeding platform 1, the width between two sliding blocks 32 on one support 3 is small so as to be respectively arranged on the two linear guide rails three 11 at the innermost side in a sliding manner, the width of two sliding blocks 32 on the other support 3 is large so as to be respectively arranged on the two linear guide rails three 11 at the outermost side in a sliding manner, the heights of the flat plates 31 on the two supports 3 are different, the height of the flat plate 31 on the support 3 connected with the linear guide rails three 11 at the inner side is lower than that on the other support 3, and thus the flat plate 31 on the lower support 3 can move to the lower side of the flat plate 31 on the higher support 3 so as to be in linkage switching with the driving mechanism 2. The end parts of the sliding blocks 32 on the two brackets 3 are respectively provided with a connecting part 34, and the driving assembly 2 is positioned between the two innermost linear guide rails 11 and can move along the length direction of the linear guide rails 11. Two supports 3 of this application all connect on three 11 of linear guide, and every support 3 is connected with three 11 of two linear guide, and the design can guarantee that two supports 3 stably remove like this, and including a support 3 in addition, a support 3 is outside, and both do not mutually disturb, and the function is stable. The driving assembly 2 is fixed with a mounting plate 21, a first linear guide 22 is fixed on the mounting plate 21, a sliding block 23 is arranged on the first linear guide 22 in a sliding manner, a connecting piece 24 is fixed on the sliding block 23, a driving piece 25 is further fixed on the mounting plate 21, the driving piece 25 can drive the connecting piece 24 to be in plugging fit with any one of the connecting parts 34, and the driving assembly 2 drives the support 3 to move through the plugging fit of the connecting piece 24 and the connecting part 34. This application makes drive assembly 2 and support 3 within a definite time linkage through connecting piece 24 and the cooperation of pegging graft of connecting portion 34, connecting piece 24 of this application is fixed on linear guide 22's slider 23, driving piece 25 promotes connecting piece 24 and enables it along linear guide 22 guide movement, the design makes connecting piece 24 remove very smoothly like this, the phenomenon that the card is dun can not appear, and slider 23 on linear guide 22 also can give the fine holding power of connecting piece 24, it is also very smooth and easy to make its removal when providing better holding power, design improvement by a wide margin this loading attachment stability at the during operation like this.

The driving part 25 is a first air cylinder 251, a second linear guide rail 26 is fixed on the mounting plate 21, a first pushing block 27 capable of being linked with the connecting part 24 is arranged on the second linear guide rail 26 in a sliding mode, and a pushing rod of the first air cylinder 251 is connected to the first pushing block 27 and capable of pushing the first pushing block 27 to move along the second linear guide rail 26 in a guiding mode. The direction of the linear guide rail I22 is perpendicular to the direction of the linear guide rail II 26, a stroke groove I241 which is obliquely arranged relative to the direction of the linear guide rail I26 is formed in the connecting piece 24, a roller I271 clamped into the stroke groove I241 is rotatably arranged on the push block I27, and the roller I271 can drive the connecting piece 24 to move along the linear guide rail I22 in a guiding mode through moving along the stroke groove I241. The utility model provides a pusher 27 sets up on two 26 of linear guide, can let pusher 27's removal can not appear blocking through two 26 of linear guide, and is more smooth and easy, can let pusher 27 remove also more accurately under two 26 of linear guide's guide, and is more accurate when letting the grafting cooperation between connecting piece 24 and the support 3, further improves stability. The connecting piece 24 and the first pushing block 27 are linked through the matching of the first stroke groove 241 and the first roller 271, the moving direction of the first pushing block 27 is perpendicular to the moving direction of the connecting piece 24, the arrangement direction of the first stroke groove 241 is obliquely arranged, when the first pushing block 27 moves, the moving direction of the first pushing block 27 can be converted into the moving direction of the connecting piece 24 through the movement of the first roller 271 along the first stroke groove 241, the first roller 271 can overcome a certain friction force through rolling when the first roller is guided to move along the groove wall of the first stroke groove 241, the roller is prevented from being clamped with the inner wall of the first stroke groove 241 in rigid contact, the linkage between the connecting piece 24 and the first pushing block 27 is quite smooth, and the stability is further improved.

The arrangement direction of the first linear guide 22 is perpendicular to the moving direction of the driving assembly 2, the two connecting portions 34 are provided with the two positioning grooves 341, the two positioning grooves 341 are located on two opposite sides, the two sides of the connecting piece 24 are provided with the second rollers 242 in a rotating mode, and the connecting piece 24 can enable one of the second rollers 242 to be clamped into one of the positioning grooves 341 through movement along the first linear guide 22. The second roller 242 is arranged on the connecting piece 24, the second roller 242 is clamped into the positioning groove 341 to realize linkage between the connecting piece 24 and the connecting part 34, the second roller 242 is designed to enable the connecting piece 24 and the connecting part 34 to be matched more smoothly, even if the second roller 242 and the positioning groove 341 are not aligned to be deviated, the roller can abut against the notch of the positioning groove 341 and roll into the positioning groove 341 along with pushing of the first cylinder 251, and the design further improves the stability of the feeding device in working.

And a limiting mechanism 4 capable of limiting the movement of any one bracket 3 is fixed between the end parts of the two innermost linear guide rails 11. This application has still arranged stop gear 4 in the one end of material loading platform 1, and stop gear 4 can fix it when one of them support 3 needs to pack, prevents to produce to remove at the in-process support 3 of material loading and influences the filler, and the design has further improved stability like this. The limiting mechanism 4 comprises a linear guide rail four 41 and a cylinder two 42, a moving plate 43 is arranged on the linear guide rail four 41 in a sliding mode, the cylinder two 42 can drive the moving plate 43 to move along the linear guide rail four 41 in a guiding mode, the two sides of the linear guide rail four 41 are respectively provided with a roller three 431 in a rotating mode, the two supports 3 are respectively provided with a limiting groove 33 which can be matched with the roller three 431 in a clamping mode, the two limiting grooves 33 are located on opposite sides, and the moving plate 43 can be clamped with one limiting groove 33 in a single moving mode. This stop gear 4 adopts movable plate 43 to fix a position support 3 in the four 41 removal insert spacing recesses 33 on the support 3 of linear guide, lets movable plate 43 keep with spacing recess 33 complex trend through the cylinder, can let support 3 remain stable like this when the material loading. One side of the second cylinder 42 is provided with a fifth linear guide rail 44 perpendicular to the fourth linear guide rail 41, the fifth linear guide rail 44 is provided with a second pushing block 45 in a sliding manner, a push rod of the second cylinder 42 is connected to the second pushing block 45 and can drive the second pushing block 45 to move along the fifth linear guide rail 44 in a guiding manner, the second pushing block 45 is provided with a fourth roller 451 in a rotating manner, the moving plate 43 is provided with a second stroke groove 432 which is obliquely arranged relative to the direction of the fifth linear guide rail 44, and the fourth roller 451 is clamped in the second stroke groove 432 and can drive the moving plate 43 to move along the fourth linear guide rail 41 by moving along the second stroke groove 432 in a guiding manner. The moving plate 43 of the design can move along the two ends of the linear guide rail four 41 to be respectively matched with the limiting grooves 33 on the two supports 3, the moving direction of the moving plate 43 is perpendicular to the moving direction of the pushing block two 45, so the arrangement direction of the stroke groove two 432 is obliquely arranged, when the pushing block two 45 moves, the moving direction of the pushing block two 45 can be converted into the moving direction of the moving plate 43 by the moving of the roller four 451 along the stroke groove two 432, a certain friction force can be overcome by rolling when the roller four 451 moves along the groove wall of the stroke groove two 432 in a guiding mode, the roller four 451 is prevented from being blocked by the rigid contact with the inner wall of the stroke groove two 432, the linkage between the moving plate 43 and the pushing block two 45 is quite smooth, and the stability is further improved.

The driving assembly 2 comprises a motor 29 and a sliding plate 6, two parallel linear guide rails six 5 are arranged on the bottom surface of the feeding platform 1, the sliding plate 6 is connected to the linear guide rails six 5 in a sliding mode, the motor 29 is fixed on the sliding plate 6, an output shaft of the motor 6 penetrates through the sliding plate 6 and extends towards the direction of the stroke groove three 12, a gear 291 is further fixed on the output shaft, a rack 28 parallel to the linear guide rails six 5 is further fixed on the bottom surface of the feeding platform 1 close to the stroke groove three 12, the gear 291 is meshed with the rack 28, a linkage 8 is further fixed on the sliding plate 6, one end of the linkage 8 penetrates through the stroke groove three 12 and is fixed with the mounting plate 21, and therefore the sliding plate 6 can drive the mounting plate 21 to move synchronously. The motor 29 rotates the gear 291 to roll along the rack 28, thereby moving the entire driving assembly 2.

The application discloses loading attachment's specific working process as follows:

firstly, material trays are placed on two supports 3, workpieces are orderly stacked in the material trays, the two supports 3 are located on one side of a limiting mechanism 4 at first, the two supports 3 are stacked up and down, connecting parts 34 on the two supports 3 are symmetrically arranged, positioning grooves 341 on the two supports 3 are also symmetrically arranged, therefore, a connecting piece 24 on a driving assembly 2 is pushed by a cylinder I251 to move left and right along a linear guide rail I22 to be clamped into one of the positioning grooves 341, after the clamping is finished, a motor 29 rotates to move along a rack 28 to drive the clamped support 3 to move towards a clamping mechanism 7, when the connecting piece moves below the clamping mechanism 7, the connecting piece 24 stops and is clamped by the clamping mechanism 7 one by one, after the clamping of the workpieces on the material trays is finished, the motor 29 rotates reversely to drive the support 3 to reset towards the limiting mechanism 4, when the positioning grooves 341 on the two supports 3 are over against, the connecting piece 24 is driven by the cylinder I251 to move reversely to be clamped onto the other support 3 and drive the clamping mechanism 3 to move towards the clamping mechanism 7 to repeat loading, and then the moving plate 43 on the two supports 3 is driven by a roller II 42 to keep the clamping roller wheel 33 facing the clamping mechanism 451, and when the clamping mechanism 3 is in a state, and the four-to be capable of keeping the clamping groove 451, and the clamping mechanism 3 to be positioned, and the moving plate is in a state that the material discharging movement of the four-to be positioned again. After the empty material tray is fully discharged, the driving component 2 drives the empty material tray to move towards the clamping mechanism 7 for feeding, and the returned support 3 with the empty material tray discharges again, so that the loading is carried out repeatedly, and the efficiency is extremely high.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (9)

1. A feeding device comprises a feeding platform (1), a grabbing mechanism (7) and two supports (3) are arranged on the feeding platform (1), the feeding platform (1) is provided with a driving component (2) which can move towards the direction of the grabbing mechanism (7) in a reciprocating way, the two brackets (3) are respectively provided with a connecting part (34), the two connecting parts (34) are positioned on opposite sides, a mounting plate (21) is fixed on the driving component (2), it is characterized in that a linear guide rail I (22) and a driving piece (25) are fixed on the mounting plate (21), a sliding block (23) is arranged on the linear guide rail I (22) in a sliding way, a connecting piece (24) is fixed on the sliding block (23), two ends of the connecting piece (24) along the length direction of the linear guide rail I (22) are respectively and rotatably connected with a roller II (242), the connecting parts (34) are all provided with positioning grooves (341), the driving piece (25) can drive the connecting piece (24) to slide along the linear guide rail I (22) in a guiding way and enable the roller II (242) in the sliding direction of the connecting piece (24) to be clamped into the positioning groove (341), the driving assembly (2) drives the bracket (3) to move through the clamping matching of the second roller (242) and the positioning groove (341).

2. A feeding device according to claim 1, characterized in that the driving member (25) is a first air cylinder (251), a second linear guide (26) is fixed on the mounting plate (21), a first pushing block (27) is slidably disposed on the second linear guide (26), a pushing rod of the first air cylinder (251) is connected to the first pushing block (27) and can push the first pushing block (27) to move along the second linear guide (26), and the first pushing block (27) can drive the connecting member (24) to slide along the first linear guide (22) when the first pushing block (27) moves along the second linear guide (26).

3. The feeding device according to claim 2, characterized in that the orientation of the second linear guide rail (26) is perpendicular to the orientation of the first linear guide rail (22), the connecting piece (24) is provided with a first stroke groove (241) which is obliquely arranged relative to the orientation of the second linear guide rail (26), the first push block (27) is rotatably provided with a first roller (271) which is clamped into the first stroke groove (241), and the first roller (271) can drive the connecting piece (24) to move along the first linear guide rail (22) in a guiding manner by moving along the first stroke groove (241).

4. A feeding device according to claim 3, wherein the positioning groove (341) is semicircular and sized to fit the second roller (242).

5. The feeding device according to claim 4, characterized in that four parallel linear guide rails three (11) are arranged on the feeding platform (1), two ends of one bracket (3) are respectively slidably arranged on the innermost two linear guide rails three (11), two ends of the other bracket (3) are respectively slidably arranged on the outermost two linear guide rails three (11), and the driving assembly (2) is located between the innermost two linear guide rails three (11) and can move along the length direction of the linear guide rails three (11).

6. A feeding device according to claim 5, characterized in that a limiting mechanism (4) capable of limiting the movement of any one bracket (3) is fixed between the ends of the innermost two linear guide rails (11) on the feeding platform (1).

7. The feeding device according to claim 6, characterized in that the limiting mechanism (4) comprises a linear guide rail IV (41) and a cylinder II (42), the orientation of the linear guide rail IV (41) is perpendicular to the orientation of the linear guide rail III (11), a moving plate (43) is arranged on the linear guide rail IV (41) in a sliding manner, the cylinder II (42) can drive the moving plate (43) to move along the linear guide rail IV (41), the two sides of the linear guide rail IV (41) are respectively provided with a roller III (431) in a rotating manner, the two supports (3) are respectively provided with a limiting groove (33) which can be clamped with the roller III (431) in a matching manner, the two limiting grooves (33) are located on opposite sides, and the moving plate (43) can be clamped with one of the limiting grooves (33) through movement.

8. The feeding device according to claim 7, characterized in that one side of the second cylinder (42) is provided with a fifth linear guide rail (44) perpendicular to the fourth linear guide rail (41), the fifth linear guide rail (44) is provided with a second pushing block (45) in a sliding manner, a pushing rod of the second cylinder (42) is connected to the second pushing block (45) and can drive the second pushing block (45) to move along the fifth linear guide rail (44), the second pushing block (45) is provided with a fourth roller (451) in a rotating manner, the moving plate (43) is provided with a second stroke groove (432) which is obliquely arranged relative to the direction of the fifth linear guide rail (44), and the fourth roller (451) is clamped in the second stroke groove (432) and can drive the moving plate (43) to move along the fourth linear guide rail (41) by moving along the second stroke groove (432) in a guiding manner.

9. The feeding device according to any one of claims 5 to 8, wherein the driving assembly (2) comprises a motor (29) and a sliding plate (6), a third stroke groove (12) is formed between two innermost linear guide rails (four 41) on the feeding platform (1), six linear guide rails (5) are arranged on two sides of the third stroke groove (12) on the bottom surface of the feeding platform (1), two ends of the sliding plate (6) are respectively connected to the six linear guide rails (5), the sliding plate (6) can slide along the six linear guide rails (5) in a guiding manner, a rack (28) is fixed between the six linear guide rails (5) on the bottom surface of the feeding platform (1), the motor (29) is fixed on the sliding plate (6), a gear (291) matched with the rack (28) is connected to an output shaft of the motor (29), and a linkage piece (8) which penetrates through the third stroke groove (12) and is fixed with the mounting plate (21) protrudes from the sliding plate (6).

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