CN109941923B - Selecting structure - Google Patents

Abstract

The invention discloses a selecting structure, which comprises a clamping mechanism, a lifting table and a clamping control mechanism, wherein the clamping control mechanism respectively controls the corresponding clamping mechanisms to change between a clamping state and a releasing state; the clamping mechanisms are connected with the corresponding clamping control mechanisms in the clamping state and are separated from the corresponding clamping control mechanisms in the releasing state. If the height position of the workpiece clamped by the clamping mechanism needs to be adjusted, only the corresponding clamping control mechanism is needed to control the corresponding clamping mechanism to change from the release state to the clamping state, and the workpiece needing to be adjusted is clamped; then, under the drive of the lifting mechanism, the lifting table, the clamping control mechanism and the clamping mechanism in the clamping state do lifting motion together, and the position of the clamping mechanism which is not in the clamping state is not changed, so that the height position of a workpiece clamped by part of the clamping mechanisms is selectively adjusted according to requirements.

Description

Selecting structure

Technical Field

The invention belongs to the technical field of conveying, and particularly relates to a selection structure.

Background

In many industries, it is often necessary to perform the respective required processes on a workpiece or object in a solution medium, and after the respective processes of the workpiece are completed, the workpiece needs to be lifted from the solution medium.

For example, chinese patent CN205673246U discloses a selection structure, which includes two vertical rails, a transverse rail, a cylinder, and a manipulator. The two vertical guide rails are vertically fixed on the frame, two ends of the transverse guide rail are respectively and slidably arranged on one vertical guide rail, the telescopic shaft of the air cylinder vertically extends, and the bottom of the telescopic shaft is fixedly connected with the transverse guide rail; the manipulator is slidably disposed on the transverse guide rail. When the selecting structure is required to select a workpiece or an object, the air cylinder descends to drive the transverse guide rail to slide downwards on the vertical guide rail; and the manipulator slides left and right on the transverse guide rail, so that the position of the manipulator is adjusted to grasp a workpiece, and then the cylinder drives the transverse guide rail, the manipulator and the workpiece clamped on the manipulator to do lifting motion, thereby realizing the function of selecting the workpiece.

However, the above selecting structure can only select and lift one workpiece at a time, even if a plurality of manipulators are arranged on the transverse guide rail, the manipulators can only synchronously lift to clamp the workpiece, and in some processing procedures of the workpiece, in order to meet special requirements, for example, some procedures need to form a functional layer with a required thickness on the surface of the workpiece, the workpiece needs to be soaked in a medium solution, the reaction speed of the chemical reaction of the medium solution in the air is faster, and then the workpiece is lifted from the solution into the air to promote the chemical reaction of the medium solution attached to the surface of the workpiece, so that a functional layer with a thinner thickness is formed on the surface of the workpiece; then, the workpiece is soaked in the medium solution, the medium solution is attached to the functional layer of the workpiece, the workpiece is lifted from the medium solution to the air, and the chemical reaction of the medium solution on the surface of the functional layer is promoted, so that the thickness of the functional layer is increased, the workpiece is required to be soaked in the medium solution and lifted to the air intermittently, and other parts keep the initial position. Therefore, the above selection structure cannot selectively select one, two or a partial number of robots from the plurality of robots according to the requirement to synchronously perform intermittent lifting actions on the workpiece.

Disclosure of Invention

Therefore, the invention aims to solve the technical problem that the existing selection structure can not selectively adjust the height position of part of the workpiece according to the requirement.

To this end, the invention provides a selection structure,

The clamping mechanisms are respectively arranged on the rack in a vertically sliding manner, and are suitable for respectively clamping workpieces to be transferred;

The lifting mechanism is arranged on the frame;

the lifting platform is driven by the lifting mechanism to do lifting motion;

The clamping control mechanisms are arranged on the lifting table and respectively control the corresponding clamping mechanisms to change between a clamping state and a releasing state; the clamping mechanisms are connected with the corresponding clamping control mechanisms in the clamping state and are separated from the corresponding clamping control mechanisms in the releasing state.

Optionally, in the above selecting structure, the clamping control mechanism has a protruding end that reciprocates; the clamping mechanism is provided with a matching part which is matched with the extending end; the extending end triggers the matching part, and the matching part drives the clamping part of the clamping mechanism to achieve a clamping state.

Optionally, in the above selecting structure, each of the clamping control mechanisms has a telescopic member provided on the lifting platform and having the extending end, and a telescopic driving device for driving the telescopic member to move in a telescopic manner; the telescopic member is provided in correspondence with the clamping mechanism.

Optionally, in the above selecting structure, the lifting platform is a circular plate, and all the clamping control mechanisms are arranged at intervals in the circumferential direction of the lifting platform.

Optionally, in the above selecting structure, a slide way for the extending end to reciprocate is provided on the lifting platform.

Optionally, the above selecting structure, the clamping mechanism includes

The mounting seat is slidably arranged on the frame;

The clamping part comprises a first clamping jaw and a second clamping jaw which are opposite and rotatably arranged on the mounting seat;

the mounting seat is provided with the matching part at one side end opposite to the clamping part;

a driving plate is arranged between the clamping part and the matching part, and the driving plate, the first clamping jaw and the second clamping jaw are distributed on two side walls of the mounting seat;

The driving plate is movably connected with the first clamping jaw and the second clamping jaw through the fixing assembly, the extending end triggers the state of the matching part, and the matching part drives the driving plate to drive the first clamping jaw and the second clamping jaw to be close to each other; in a state that the extending end is separated from the matching part, under the driving action of the restoring biasing force, the driving plate drives the first clamping jaw and the second clamping jaw to be far away from each other.

Further alternatively, in the selecting structure, the mounting seat is provided with a first abdicating hole and a second abdicating hole which extend vertically and are arranged side by side;

the fixing assembly comprises a first fixing piece and a second fixing piece which respectively penetrate through the first abdication hole and the second abdication hole; one end of the first fixing piece is hinged to the first clamping jaw, and the other end of the first fixing piece is fixed to the driving plate; one end of the second fixing piece is hinged to the second clamping jaw, and the other end of the second fixing piece is fixed to the driving plate; and

And the two ends of each elastic component are respectively fixed on the corresponding fixing piece and the mounting seat and apply the return biasing force, and the first fixing piece and the second fixing piece are driven to be respectively positioned at the bottom of the hole wall of the yielding hole where each elastic component is positioned under the biasing force of the elastic component.

Optionally, in the above selecting structure, a side wall surface of the mounting seat facing away from the first clamping jaw and the second clamping jaw is provided with at least one rolling element protruding inwards; the rolling member serves as the engaging portion.

Optionally, in the selecting structure, connecting columns which are in one-to-one correspondence with the clamping mechanisms and vertically extend are arranged on the rack;

the clamping mechanisms are vertically and slidably arranged on the corresponding connecting columns.

Optionally, in the above selecting structure, all the connecting posts are distributed on the periphery of all the lifting mechanisms and the clamping control mechanisms.

Optionally, in the above selecting structure, the mounting base is sleeved on each corresponding connecting post.

Optionally, in the above selecting structure, the connecting column is a square column; the inner cavity of the mounting seat is a square frame which is suitable for being sleeved on the connecting column, a first guide wheel is rotatably arranged on the side wall of each side of the square frame, and the first guide wheel is abutted to the side wall of the corresponding connecting column.

Optionally, in the above selecting structure, the lifting mechanism is provided with a lifting component and a lifting driving device for driving the lifting component to move up and down;

The lifting component comprises

The winding roller is driven by the lifting driving device and is rotatably arranged on the frame;

the starting end of the conveying belt is fixed on the winding roller, is wound on the winding roller, and extends downwards vertically from the withdrawing end withdrawn from the winding roller; the lifting platform is arranged on the extraction end.

Optionally, the selecting structure further comprises at least one vertical guide member fixedly arranged relative to the frame and extending vertically, and the lifting platform is sleeved outside the vertical guide member.

The technical scheme of the invention has the following advantages:

1. The invention provides a selecting structure which comprises at least two clamping mechanisms, a lifting mechanism, a lifting table and a clamping control mechanism, wherein the clamping mechanisms are respectively arranged on a rack in a vertically sliding manner, and each clamping mechanism is suitable for respectively clamping a workpiece to be transferred; the lifting mechanism is arranged on the frame; the lifting platform is driven by the lifting mechanism to do lifting motion; the clamping control mechanisms are arranged on the lifting table and respectively control the corresponding clamping mechanisms to change between a clamping state and a releasing state; the clamping mechanisms are connected with the corresponding clamping control mechanisms in the clamping state and are separated from the corresponding clamping control mechanisms in the releasing state.

According to the selecting structure, if the height position of a workpiece clamped by part of clamping mechanisms needs to be adjusted, only the corresponding clamping control mechanism is required to control the corresponding clamping mechanism to change from a release state to a clamping state, and the workpiece needing to be adjusted is clamped; then under the drive of the lifting mechanism, the lifting table, the clamping control mechanism and the clamping mechanism in the clamping state do lifting motion together, and the position of the workpiece clamped by the clamping mechanism which is not in the clamping state is not changed, so that the height position of the workpiece clamped by part of the clamping mechanism is selectively adjusted according to requirements, and part of the clamping mechanism is lifted independently of other clamping mechanisms in an intermittent mode.

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 perspective view of the selected structure provided in embodiment 1 of the present invention (with the support frame removed);

FIG. 2 is a schematic view of a part of the selected structure of FIG. 1 with the upper base, clamping mechanism and support frame removed;

FIG. 3 is a schematic view of the structure of the selected structure of FIG. 1 (with the conveyor removed) after the upper base and lifting mechanism are engaged;

FIG. 4 is a partial schematic view of the selected structure of FIG. 1 after the vertical guide is mated with the lift table, conveyor belt;

FIG. 5 is a schematic view of the structure of the clamping mechanism of the selected structure of FIG. 1 after being mated with a connecting column and a clamping control mechanism;

FIG. 6 is a schematic view of the clamping mechanism of FIG. 5 (in a direction from the outside to the inside);

FIG. 7 is a schematic view (from inside to outside) of the clamping mechanism of FIG. 5;

FIG. 8 is a schematic view of an exploded view of the clamping mechanism of FIG. 5;

FIG. 9 is a schematic view of the connection post of the alternative structure of FIG. 1 mated with the lower base;

FIG. 10 is a schematic view of the selected structure of FIG. 1 with portions of the frame removed;

FIG. 11 is a schematic structural diagram of a selected structure provided in embodiment 1 of the present invention;

Reference numerals illustrate:

1-a frame; 11-upper base; 111-a third relief hole; 12-a lower base; 13-supporting frames; 14-a fixed disk; 15-a fixing plate;

2-a lifting mechanism; 21-a second driver; 22-winding roller; 23-a conveyor belt; 24-lifting platform; 241-first opening; 242-arc-shaped fixing strips; 25-pressing wheel; 26-limiting wheels; 27-connecting seats;

3-a clamping control mechanism; 31-a first driver; 32-telescoping members; 331-a first platen; 332-a second platen; 333-first linear chute; 334-a second linear chute;

4-connecting columns;

5-a clamping mechanism; 51-mounting seats; 511-side plates; 52-a first jaw; 53-a second jaw; 54-a first fixing member; 55-a second fixing member; 561-first connection plate; 562-a second connection plate; 57-drive plate; 571 rolling elements; 58-clamping plate; 581-first projection; 582-second protrusions; 583-a second spindle; 584-a third spindle; 585-first guide wheel; 586-fourth relief hole; 59-mounting plate; 591-a first relief hole; 592-second relief holes;

6-a support member;

71-vertical guides.

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. 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.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides a picking structure, as shown in fig. 1 to 11, comprising a lifting mechanism 2, a lifting table, a plurality of clamping mechanisms 5, and a plurality of clamping control mechanisms 3.

As shown in fig. 1 and 2, the frame 1 includes upper and lower bases 11 and 12 extending horizontally and vertically opposite to each other, and a plurality of supporting frames 13 fixedly connecting the upper and lower bases 11 and 12. The lifting mechanism 2 is mounted on the upper base 11.

As shown in fig. 2 and 3, the lifting mechanism 2 includes a lifting drive device 21, a winding roller 22, and a conveying belt 23. The upper base 11 is provided with a third abdication hole 111, the upper base 11 is provided with two opposite first supports, and the two first supports are rotatably provided with a first rotating shaft and span over the third abdication hole 111; the wind roller 22 is fixed to the first rotation shaft.

The lifting drive device 21 is optionally a first rotating motor, which is fixed on the upper base 11 and the output shaft of which is fixedly connected with the first shaft; the conveying belt 23 is wound on the winding roller 22, the initial end of the conveying belt 23 is fixed on the winding roller 22, the extraction end of the conveying belt 23 extracted from the winding roller 22 vertically extends downwards and passes through the third abdicating hole 111, and the lifting platform 24 is fixed on the bottom of the extraction end.

For example, as shown in fig. 4, a connecting seat 27 is disposed at the bottom of the extraction end, a first fixing shaft is fixed on the connecting seat 27, and the bottom of the extraction end is wound on the first fixing shaft and fixedly connected by two opposite clamping plates. The top of the lifting platform 24 is fixedly connected with the bottom of the connecting seat 27 through a second fixing shaft, so that the lifting platform 24 extends horizontally. The lift table 24 may be a circular plate.

The conveyor belt 23 may be a belt or chain, or other hanging member, and the initial end of the conveyor belt 23 may be secured to the winding roller 22 in a variety of ways. For example, as shown in fig. 3, a clip groove 28 extending in the axial direction is provided on the circumferential outer wall surface of the winding roller 22, and the start end of the conveying belt 23 is inserted into the clip groove 28, and the winding roller 22 is fixedly connected to the start end by a fastener. Such as a screw, a screw or a pin, or it is also possible to directly adhere or weld the starting end to the circumferential outer wall surface of the winding roller 22.

As shown in fig. 3, the upper base 11 is further provided with a second support, the second support is rotatably sleeved with a pressing wheel 25, the axis of the pressing wheel 25 is parallel to the axis of the winding roller 22, the peripheral wall surface of the pressing wheel 25 is close to the peripheral wall surface of the winding roller 22, a belt passing gap for the transmission belt 23 to pass through is formed between the pressing wheel 25 and the peripheral wall surface of the winding roller 22, and the arrangement of the pressing wheel 25 plays a guiding role on the vertical downward extension of the transmission belt 23. Optimally, the axis of pinch roller 25 is located below the axis of wrap roller 22.

As shown in fig. 3, the first rotating shaft is further sleeved with two limiting wheels 26, the two limiting wheels 26 are respectively abutted and fixed on two axial ends of the winding roller 22, the two limiting wheels 26 extend out of the outer circumferential end face of the winding roller 22 along the radial outer circumferential end face of the limiting wheels, so that a placement area is formed between the two limiting wheels 26 and the winding roller 22, the part of the transmission belt 23, which is wound on the winding roller 22, is limited in the placement area, and the transmission belt 23 is prevented from sliding axially on the winding roller 22.

As shown in fig. 2, the lifting mechanism 2 further includes a plurality of vertical guides 71 for guiding the conveyor belt 23 to slide in a straight line in the vertical direction, for example, four vertical guides 71 are provided; each vertical guide member 71 extends vertically and is fixed on the frame 1, and the lifting table 24 is sleeved on the plurality of vertical guide members 71, so that the conveying belt 23 drives the lifting table 24 to slide vertically only in a straight line under the driving of the lifting driving device 21, and the phenomenon that the conveying belt 23 swings in the horizontal direction in the lifting movement process is avoided.

For example, the top of each vertical guide 71 is fixed to the upper base 11 and the bottom is fixed to the fixing plate 15, and as shown in fig. 5, the fixing plate 15 is fixed to the frame. The vertical guide 71 may have a cylindrical or prismatic structure.

As shown in fig. 4, a plurality of clamping control mechanisms 3 are fixed on the lifting table 24, so that one lifting mechanism 2 is realized to drive all the clamping control mechanisms 3 to do lifting motion. For example, the four clamping control mechanisms 3 are arranged on the circumference of the lifting table at uniform intervals, and the included angle formed between two adjacent clamping control mechanisms is 90 degrees.

The clamping control mechanisms 3 are in one-to-one correspondence with the clamping mechanisms 5, each clamping control mechanism 3 is arranged on the lifting table and respectively controls the corresponding clamping mechanism to change between a clamping state and a releasing state, when the clamping mechanism is in the clamping state, the clamping mechanism is connected with the corresponding clamping control mechanism, and when the clamping mechanism is in the releasing state, the clamping mechanism is separated from the corresponding clamping control mechanism.

As shown in fig. 4, each clamping control mechanism 3 includes a telescopic member 32 and a telescopic driving device 31, where the telescopic member has an extending end 321, a fixed end of the telescopic member 32 opposite to the extending end 321 is fixed on the telescopic driving device, and the telescopic member is driven by the telescopic driving device to perform telescopic movement. For example, the telescopic member 32 is a plate, and the telescopic driving device 31 is a telescopic cylinder. The telescopic member 32 is horizontally moved in a telescopic manner by the telescopic cylinder. The clamping mechanism is provided with a matching part 571, and the extending end 321 triggers the matching part 571 (mentioned below), and the matching part 571 drives the clamping part of the clamping mechanism to achieve a clamping state.

For example, when the extending end 321 is at the extending position, the extending end 321 just abuts against and is supported on the matching portion 571, so that the matching portion 571 is driven to move upwards by the lifting platform, and the clamping portion clamps the workpiece; meanwhile, through the supporting effect of the extending end on the matching part 571, the clamping mechanism integrally moves upwards along with the extending end 321 after being clamped, so that the extending end 321 triggers the matching part 571. In contrast, when the extending end 321 is retracted, the extending end 321 is separated from the engaging portion 571, and the extending end 321 does not drive the clamping mechanism to perform an ascending motion.

As shown in fig. 4, the lifting platform 24 is provided with a sliding way for the extending end 321 to reciprocate, and an arc fixing strip 242 is arranged between two adjacent sliding ways at the edge of the circular lifting platform 24, for example, when the number of the clamping control mechanisms 3 is four, the number of the sliding ways is four.

For the structure of each slideway, as shown in fig. 4, a first pressing plate 331 and a second pressing plate 332 are respectively arranged at a position between two adjacent arc fixing bars 242 on the lifting platform 24; the first and second pressing plates are spaced apart, the bottoms of the first and second pressing plates 331 and 332 have first steps recessed upward, and the top of the second pressing plate 332 has second steps recessed upward, so that a slide is formed between the two pressing plates and the lifting table.

As shown in fig. 4, a first opening 241 is formed on the lifting platform at the sliding way between the first pressing plate and the second pressing plate, so that the matching portion 571 vertically passes through the lifting platform to avoid the lifting motion of the lifting platform, the first pressing plate and the second pressing plate are just located at two ends of the first opening, so that a first linear chute 333 is formed between the first pressing plate and the lifting platform, a second linear chute 334 is formed between the second pressing plate and the lifting platform, correspondingly, two ends of the telescopic component 32 are also stepped, and are respectively embedded into the first linear chute 333 and the second linear chute 334, and the two linear chutes play a guiding role on the radial telescopic motion of the telescopic component along the lifting platform.

As shown in fig. 1 and fig. 5, each clamping mechanism 5 is slidably disposed on the frame in a vertical direction and is correspondingly disposed with the respective clamping control mechanism, so that when the clamping control mechanism 3 controls the respective corresponding clamping mechanism to be in a clamping state, the lifting mechanism 2 drives the lifting table to further enable the clamping control mechanism 3 to drive the corresponding clamping mechanism 5 to vertically move in a lifting manner on the frame, thereby changing the vertical position of the clamping mechanism and realizing the position of lifting the workpiece clamped by the clamping mechanism upwards.

That is, the lifting motion of each clamping mechanism is controlled by an independent clamping control mechanism, so that the workpiece can be clamped by other clamping mechanisms independently to perform lifting motion, and the local workpiece can be selectively lifted to meet the process requirement of the workpiece.

The frame is provided with connecting columns corresponding to the clamping mechanisms one by one, the tops of the connecting columns are fixed on the fixed disc 14, the bottoms of the connecting columns are fixed on the lower base, the fixed disc 14 is fixed on the upper base, or the tops of the connecting columns are directly fixed on the upper base. The clamping mechanisms 5 are sleeved on the connecting columns in a one-to-one correspondence manner, all the connecting columns are arranged on the peripheries of the clamping control mechanism and the lifting mechanism, and each clamping mechanism 5 is vertically and slidably arranged on the frame.

As shown in fig. 6, 7 and 8, each clamping mechanism 5 includes a mounting base 51, a clamping portion and a drive plate 57. Wherein the mounting seat 51 is sleeved on the connecting column 4; the clamping part comprises a first clamping jaw and a second clamping jaw which are oppositely and rotatably arranged on the mounting seat, the matching part 571 is arranged at one side end of the mounting seat back to the clamping part, a driving plate is arranged between the clamping part and the matching part 571, and the driving plate and the clamping part are distributed on two side walls of the mounting seat. For example, in fig. 7, the drive plate 57 is located on the left side of the mount 51, and the first and second jaws 52, 53 are located on the right side of the mount 51.

For example, the connecting post 4 is a square post, the inner cavity of the mounting seat 51 is a square frame suitable for being sleeved on the connecting post 4, as shown in fig. 7 and 8, alternatively, the mounting seat 51 comprises a square frame surrounded by four side plates 511, wherein one end of two opposite side plates 511 extends outwards to form an extension end; a mounting plate 59 secured to the extension end, the first jaw 52 and the second jaw 53 being rotatably mounted to the mounting block by a securing assembly. The engaging portion 571 is triggered by the extending end 321, the engaging portion 571 drives the driving plate to drive the first clamping jaw and the second clamping jaw to approach each other, the extending end 321 is separated from the engaging portion 571, and the driving plate drives the first clamping jaw and the second clamping jaw to depart from each other under the driving action of the restoring biasing force.

The mounting plate 59 is provided with a first abdicating hole 591 and a second abdicating hole 592 along a vertical extension side by side, as shown in fig. 7 and 8, and the fixing assembly includes a first fixing element 54, a first connecting plate 561, a second connecting plate 562, a second fixing element 55, and two elastic components (not shown in the drawings).

The first fixing piece 54 and the second fixing piece 55 respectively penetrate through the first yielding hole 591 and the second yielding hole 592; one end of the first fixing member 54 is fixed to the driving plate 57, and both ends of the first connection plate 561 are hinged to the other end of the first fixing member 54 and the first clamping jaw 52, respectively; one end of the second fixing member 55 is fixed to the driving plate 57, and both ends of the second connecting plate 562 are hinged to the other end of the second fixing member 55 and the second jaw 53, respectively.

The elastic component can be a spring, one end of one elastic component is fixed on the first fixing piece, and the other end of the other elastic component is fixed on the mounting seat, for example, the other end of the elastic component is fixed on the mounting plate; the two ends of the other elastic component are respectively fixed on the second fixing component and the mounting plate, the two elastic components apply downward biasing force to the respective fixing components, and when the extending end 321 of the clamping control mechanism does not trigger the matching part 571, the first fixing component and the second fixing component drive the first fixing component 54 and the second fixing component 55 to respectively abut against the bottom of the hole wall of the yielding hole where the two elastic components are located under the biasing force of the two elastic components. The mating portion 571 is a rolling element such as a bearing.

That is, when the extending end 321 of the clamping control mechanism extends to abut against the corresponding matching portion 571 of the clamping mechanism, the extending end 321 drives the matching portion 571 to move up along with the lifting platform, the matching portion 571 drives the driving plate to further drive the first fixing piece and the second fixing piece to move up in the yielding hole where the first fixing piece and the second fixing piece are located, at this time, the mounting seat cannot move up along with the matching portion 571, the first fixing piece and the second fixing piece 55 respectively drive the first clamping jaw 52 and the second clamping jaw 53 to approach each other through the first connecting plate 561 and the second connecting plate 562 so as to clamp a workpiece located between the first clamping jaw and the second clamping jaw, and when the first fixing piece and the second fixing piece move to the top of the wall of the yielding hole where the first clamping piece and the second fixing piece are located, the first clamping jaw and the second clamping jaw just clamp the workpiece, so that the clamping mechanism is controlled by the clamping control mechanism to change from the releasing state to the clamping state; after that, when the engaging portion 571 continues to move upward along with the extending end 321, the mounting seat is driven to move upward on the connecting post.

Conversely, after the extending end 321 is retracted, the extending end 321 is separated from the matching part 571, at this time, under the action of the biasing forces of the two elastic components, the first fixing piece and the second fixing piece move downwards in the respective yielding holes, so as to drive the first clamping jaw and the second clamping jaw to be mutually far away, so that the two clamping jaws recover to an initial release state, and when the first fixing piece and the second fixing piece move downwards to the bottom of the hole wall of the respective yielding hole, the two clamping jaws are in a complete release state; meanwhile, when the lifting platform descends, the mounting seat downwards moves on the connecting column under the self gravity of the clamping mechanism and falls to the initial position of the clamping mechanism.

In order to reduce the friction force exerted by the sliding of the mounting seat 51 on the connecting column, as shown in fig. 7 and 8, a first guide wheel 585 is rotatably provided on each side wall of the mounting seat 51, and the first guide wheel 585 abuts against the side wall on which the corresponding connecting column 4 is located. When the clamping mechanism 5 moves up and down on the connecting column 4, the first guide wheel 585 rolls on the connecting column 4 to reduce the friction force applied when the mounting seat 51 slides on the connecting column 4.

Specifically, as shown in fig. 7 and 8, each side plate 511 of the mounting seat 51 is provided with two vertically extending clamping plates 58, each clamping plate 58 faces the inner side wall of the side plate 511 to form an inward concave through groove, the through grooves of the clamping plates 58 are just clamped on the top and the bottom of the side plate, and correspondingly, the top and the bottom of the clamping plates 58 respectively form a first protruding part 581 and a second protruding part 582; the inner side end of the first protruding part 581 is provided with a second opening, and the inner side end of the second protruding part 582 is provided with a third opening; a second rotating shaft 583 is fixed in two second openings at the top of the same side plate 511, and a first guide wheel 585 is sleeved on the second rotating shaft 583; the opening of the second notch is close to the outer wall surface of the connecting column 4.

Similarly, a third rotating shaft 584 is fixed at two third openings at the bottom of the same side plate 511, and a first guiding wheel 585 is sleeved on the third rotating shaft 584, so that two first guiding wheels 585 are arranged on each side plate 511, and the whole clamping mechanism 5 rolls on the connecting column 4, so that the friction force between the mounting seat 51 and the connecting column 4 is further reduced. As shown in fig. 9, fourth relief holes 586 are provided in the corresponding clip boards 58 on the paths through which the first fixing member 54 and the second fixing member 55 pass.

The second opening and the third opening are arranged, so that the fastener can be conveniently inserted into the second opening or the third opening to be along the direction perpendicular to the connecting column (such as the front-back direction in fig. 9), and the positions of the second rotating shaft or the third rotating shaft in the openings are adjusted, so that the plurality of first guide wheels can roll on the connecting column.

As shown in fig. 2,5 and 10, the selecting structure further includes a plurality of supporting members 6 disposed on the frame 1, the plurality of supporting members 6 are located outside the connecting columns 4, and the supporting members 6 are in one-to-one correspondence with the clamping mechanisms 5, so as to support the respective corresponding clamping mechanisms 5 when the clamping portions are in a released state. For example, the supporting member 6 is an inverted U-shaped tube, and the top of the inverted U-shaped tube is adapted to support the mounting seat 51 of the clamping mechanism 5, such as an outer side plate of the mounting seat 51 and a clamping plate on the side plate; or support the mounting plate 59.

The use process of the selection structure of this embodiment is:

If the four clamping control mechanisms 3 are the first clamping control mechanism 3, the second clamping control mechanism 3, the third clamping control mechanism 3 and the fourth clamping control mechanism 3 respectively, the four clamping mechanisms 5 are the first clamping mechanism 5, the second clamping mechanism 5, the third clamping mechanism 5 and the fourth clamping mechanism 5 respectively correspondingly; the four connecting columns 4 are respectively a first connecting column 4, a second connecting column 4, a third connecting column 4 and a fourth connecting column 4 correspondingly; assuming that the workpieces to be transferred corresponding to the four clamping mechanisms 5 are a first barrel body, a second barrel body, a third barrel body and a fourth barrel body, parts to be processed are filled in each barrel body, as shown in fig. 10 and 11, each barrel body is correspondingly placed in a process groove 82, a sliding plate 83 is further arranged on the frame, and the sliding plate 83 is used for sliding the workpieces into the barrel body 81. In the initial state, the four clamping mechanisms 5 are all placed on the respective supporting parts 6 and are all in the release state, and the first clamping jaw 52 and the second clamping jaw 53 of the clamping mechanism 5 are respectively positioned on the periphery of the respective corresponding barrel body; the four clamping control mechanisms 3 are all in a retracted state.

It is assumed that intermittent lifting movement of the first tub is required, and the other three tub are only required to be continuously immersed in the solution in the process tank.

Firstly, the lifting platform 24 of the lifting mechanism 2 moves upwards, the telescopic component 32 of the first clamping control mechanism 3 stretches out, and when the lifting platform 24 moves to a certain height, the stretching end 321 of the first clamping control mechanism 3 just abuts against the matching part 571 of the first clamping mechanism 5; since the extending ends 321 of the other three clamping control mechanisms 3 do not extend, when the lifting platform 24 moves upwards, the matching parts 571 of the other three clamping mechanisms 5 respectively pass through the corresponding first openings 241 on the lifting platform 24 correspondingly, so as to avoid the lifting movement of the lifting platform 24, as shown in fig. 4;

Along with the upward movement of the lifting platform 24, the extending end 321 of the first clamping control mechanism 3 drives the matching part 571 to further drive the driving plate 57 to enable the first clamping jaw 52 and the second clamping jaw 53 of the first clamping mechanism 5 to be close to each other so as to clamp the first barrel body, and in the process, the mounting seat 51 still abuts against the supporting part 6 and does not do upward movement; when the first fixing member 54 and the second fixing member 55 move to the top of the hole wall in the respective yielding holes, the first clamping mechanism 5 completes the process of clamping the first barrel body;

afterwards, the lifting table 24 continues to move upwards, and then the mounting seat 51 of the whole first clamping mechanism 5 moves upwards on the first connecting column 4, so that the vertical height of the first barrel body is changed, parts in the first barrel body are lifted upwards from the treatment liquid, intermittent lifting of the first barrel body is completed, and the positions of other barrel bodies are all at initial positions;

Furthermore, the lifting table 24 moves downwards, under the gravity of the first clamping mechanism 5 and the first barrel body, the matching part 571 of the first clamping mechanism 5 still is lapped on the extending end 321 to move downwards along with the lifting table 24, and when the first barrel body descends to the initial position, the first clamping mechanism 5 still clamps the first barrel body, and correspondingly, the clamping mechanism is abutted on the supporting part;

Then, the lifting mechanism stops moving, at this time, the extending end 321 of the first clamping mechanism 5 of the lifting platform 24 makes a retracting movement, so that the extending end 321 is separated from the matching part 571 of the first clamping mechanism 5, at this time, under the action of downward biasing forces of the two elastic components, the first fixing piece 54 and the second fixing piece 55 are driven to move downwards in the yielding holes where the two elastic components are located, so that the first clamping jaw 52 and the second clamping jaw 53 of the first clamping mechanism 5 move away from each other, and the first clamping mechanism 5 is changed from a clamping state to a releasing state, so that one intermittent lifting movement of the first barrel body is completed, and the height positions of other barrel bodies are not changed; the above-described process may be repeated to continuously perform intermittent lifting movement of the first tub, thereby being able to selectively perform lifting movement of the workpiece.

Of course, one barrel body, two barrel bodies, three barrel bodies or four barrel bodies can be selected selectively according to requirements to synchronously clamp respective workpieces for lifting movement.

As a first alternative embodiment of the present embodiment 1, both ends of the vertical guide 71 of the elevating mechanism 2 may be directly fixed to the frame 1 without providing the fixing plate 15. The number of the vertical guides 71 may be one, two, three, etc., and the specific number may be determined according to actual needs. As a modified embodiment, the lifting mechanism 2 may be directly connected to the lifting table 24 at the bottom of the conveyor belt without providing a pressing wheel or a connecting seat. The first rotating shaft may not be provided with the limiting wheel 26, and only the winding roller may be provided.

As a second alternative embodiment of example 1, the first guide wheel 585 on the mounting seat 51 of the clamping mechanism 5 may be fixed to the mounting seat 51 in other manners, such as directly providing a mounting hole on a side plate, in which the first guide wheel 585 is mounted, and the first guide wheel 585 can roll on the connecting column 4 when moving upward along with the mounting seat 51. Alternatively, the first guide wheel 585 may not be provided, and the mounting seat 51 may be directly sleeved on the connecting column 4, or may be connected to the connecting column 4 in other slidable manners; for example, the connecting column 4 is provided with a vertically extending linear guide rail, and the mounting seat is slidingly arranged on the linear guide rail. The connecting column 4 may be a cylindrical column or another connecting column.

As a modified embodiment, the mounting seat 51 of the clamping mechanism 5 may have other shapes, such as a ring shape or a plate shape, and the first clamping jaw 52, the second clamping jaw 53, the driving plate 57 and the elastic member may be provided on the mounting seat 51.

As a third alternative embodiment, the rolling elements on the drive plate 57 may be replaced with rollers; the lifting platform 24 may not be provided with the first pressing plate 331 and the second pressing plate 332, and the telescopic component 32 is lapped on the first notch 241 and is embedded between two adjacent arc fixing strips. Or the arc-shaped fixing strip is not required to be arranged, the first opening is directly used as a slideway, and the telescopic part is directly fixed in the slideway. Or a slide way is not required to be arranged, and the telescopic component directly extends out of the lifting table to be matched with the matching part.

As a fourth alternative embodiment of example 1, the fixing assembly may be provided without the first connecting plate and the second connecting plate, and the other end of the first fixing member is directly hinged to the first clamping jaw, and the other end of the second fixing member is directly hinged to the second clamping jaw. As a further variation, the securing assembly may also be replaced with other structures.

As the deformation of fixture, fixture still can be the fixture among the prior art, only need including relative activity first clamping jaw and the second clamping jaw that sets up, two clamping jaws can be close to each other or keep away from under the drive of cooperation portion 571 can.

As a deformation implementation manner, besides the above abutting manner, the protruding end and the matching portion may also use a magnetic adsorption manner, for example, the protruding end is a first permanent magnet, the matching portion is a second permanent magnet, and polarities of the two opposite ends of the two permanent magnets are opposite, so that the protruding end protrudes and then adsorbs the second permanent magnet to drive the matching portion to do lifting motion. After the extending end is retracted, the extending end is separated from the matching part.

Or the side of the matching part facing the extending end is provided with a mounting groove, and the extending end acts on the matching part by being embedded in the mounting groove of the matching part; in contrast, the protruding end is withdrawn from the mounting groove and separated from the mating portion after the protruding end is retracted, and the connecting post described above may not be provided in this embodiment.

In addition, the number of the clamping control mechanisms and the clamping mechanisms is one-to-one, and is at least two, such as two, three, four, five, six and the like, and the specific setting number is determined according to actual requirements.

Example 2

The present embodiment provides a selection structure, which is different from the selection structure provided in embodiment 1in that: the lifting mechanism 2 is different, and other structures are the same, and are not described in detail here.

The lifting mechanism 2 in this embodiment may be replaced by another lifting mechanism, for example, a cylinder is directly adopted, the telescopic shaft of the cylinder extends vertically, and the bottom of the lifting table 24 is fixed on the bottom of the telescopic shaft of the cylinder; or the lifting mechanism 2 can be replaced by a gear and a rack, the gear is driven to rotate by a rotating motor, the gear is meshed with the rack, and the rack vertically moves up and down, or other lifting mechanisms 2 can only drive the lifting table 24 to move up and down, and then drive the whole clamping control mechanism 3 to move up and down.

Example 3

The present embodiment provides a selection structure, which is different from the selection structure provided in embodiment 1 or embodiment 2 or embodiment 3 in that: the structure of the grip control mechanism is different, and other structures are described with reference to any one of embodiments 1 to 3.

The clamping control mechanism in this embodiment may be a telescopic cylinder directly, a telescopic shaft of which is used as the telescopic member in embodiment 1, or may be a hydraulic cylinder, or a gear engaged with a rack, the rack being used as the telescopic member. In addition, when the clamping mechanism can be replaced by a manipulator, the corresponding clamping control mechanism can be a structure for controlling the action of the manipulator in the prior art.

The structure of the frame 1 is not limited to the above-described structure, and the frame 1 may be any structure as long as it supports and mounts the frame.

In summary, the device comprises at least two clamping mechanisms 5, a lifting mechanism, a lifting table and at least two clamping control mechanisms, wherein the clamping mechanisms are respectively and vertically slidably arranged on the frame, and each clamping mechanism is suitable for respectively clamping a workpiece to be transferred; the lifting mechanism is arranged on the frame; the lifting platform is driven by the lifting mechanism to do lifting motion; the clamping control mechanisms are arranged on the lifting table and respectively control the corresponding clamping mechanisms to change between a clamping state and a releasing state; the clamping mechanisms are connected with the corresponding clamping control mechanisms in the clamping state and separated from the corresponding clamping control mechanisms in the releasing state, so that local workpieces can be selectively lifted and lowered according to requirements, and the adjusting function is realized.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (11)

1. A selection structure, characterized by comprising

At least two clamping mechanisms (5) are respectively arranged on the frame in a vertically sliding manner, and each clamping mechanism is suitable for respectively clamping a workpiece to be transferred;

The lifting mechanism (2) is arranged on the frame (1);

the lifting platform is driven by the lifting mechanism to do lifting motion;

The clamping control mechanisms (3) are arranged on the lifting table and respectively control the corresponding clamping mechanisms to change between a clamping state and a releasing state; the clamping mechanisms are connected with the corresponding clamping control mechanisms respectively in the clamping state and are separated from the corresponding clamping control mechanisms respectively in the releasing state;

The clamping control mechanism (3) is provided with a protruding end which moves reciprocally; the clamping mechanism (5) is provided with a matching part (571) which is matched with the extending end; the extending end triggers the matching part (571), and the matching part (571) drives the clamping part of the clamping mechanism (5) to achieve a clamping state;

each clamping control mechanism (3) is provided with a telescopic component which is arranged on the lifting table (24) and provided with the extending end, and a telescopic driving device (31) for driving the telescopic component to move in a telescopic way; the telescopic component is arranged corresponding to the clamping mechanism (5);

The lifting platform is a round plate, and all the clamping control mechanisms are arranged at intervals on the circumferential direction of the lifting platform.

2. The selection structure according to claim 1, characterized in that the lifting platform (24) is provided with a slide for the reciprocal movement of the projecting end.

3. The selection structure according to claim 1, characterized in that the clamping mechanism (5) comprises

A mounting seat (51) slidably provided on the frame;

The clamping part comprises a first clamping jaw (52) and a second clamping jaw (53) which are opposite and rotatably arranged on the mounting seat (51);

the mounting seat (51) is provided with the matching part (571) at one side end opposite to the clamping part;

A driving plate (57) is arranged between the clamping part and the matching part (571), and the driving plate (57), the first clamping jaw (52) and the second clamping jaw (53) are distributed on two side walls of the mounting seat (51);

the driving plate (57) is movably connected with the first clamping jaw (52) and the second clamping jaw (53) through a fixing assembly, the matching part (571) is triggered at the extending end, and the matching part (571) drives the driving plate (57) to drive the first clamping jaw (52) and the second clamping jaw (53) to be close to each other; in a state that the extending end is separated from the matching part (571), the driving plate (57) drives the first clamping jaw (52) and the second clamping jaw (53) to be far away from each other under the driving action of the restoring biasing force.

4. A selection structure according to claim 3, characterized in that the mounting seat (51) is provided with a first relief hole (591) and a second relief hole (592) extending vertically and side by side;

The fixing assembly comprises a first fixing piece (54) and a second fixing piece (55) which respectively penetrate through a first abdication hole (591) and a second abdication hole (592); one end of the first fixing piece (54) is hinged to the first clamping jaw (52), and the other end of the first fixing piece is fixed to the driving plate (57); one end of the second fixing piece (55) is hinged to the second clamping jaw (53), and the other end of the second fixing piece is fixed to the driving plate (57); and

And the two ends of each elastic component are respectively fixed on the corresponding fixing piece and the mounting seat and apply the return biasing force, and the first fixing piece (54) and the second fixing piece (55) are driven to be respectively positioned at the bottom of the hole wall of the yielding hole where each elastic component is positioned under the biasing force of the elastic component.

5. The selection structure according to claim 4, characterized in that a side wall surface of the mounting seat (51) facing away from the first clamping jaw (52) and the second clamping jaw (53) is provided with at least one rolling element protruding inwards; the rolling member serves as the engagement portion (571).

6. The selection structure according to any one of claims 3 to 5, characterized in that the frame is provided with connecting columns (4) which are in one-to-one correspondence with the clamping mechanisms and extend vertically;

the clamping mechanisms (5) are vertically and slidably arranged on the corresponding connecting columns (4).

7. The selection structure according to claim 6, characterized in that all the connection posts (4) are distributed over the periphery of all lifting mechanisms (2) and the clamping control mechanism (3).

8. The selection structure according to claim 6, characterized in that the mounting seats (51) are fitted over the respective connecting posts (4).

9. The selection structure according to claim 8, characterized in that the connecting posts (4) are square posts;

The inner cavity of the mounting seat (51) is a square frame which is suitable for being sleeved on the connecting column (4), a first guide wheel (585) is rotatably arranged on the side wall of each side of the square frame, and the first guide wheel (585) is abutted to the side wall of the connecting column (4) corresponding to the first guide wheel.

10. The selection structure according to claim 1, characterized in that the lifting mechanism (2) has a lifting member and a lifting drive device for driving the lifting member to move up and down;

The lifting component comprises

A winding roller (22) rotatably provided on the frame (1) driven by a lifting drive device (21);

A conveying belt (23) with a start end fixed on the winding roller (22) and wound on the winding roller (22), and a withdrawing end withdrawn from the winding roller (22) extends downwards in the vertical direction;

the lifting platform is arranged on the extraction end.

11. The selection structure according to claim 1, further comprising

At least one vertical guide (71) which is fixedly arranged relative to the frame (1) and extends vertically, and the lifting table (24) is sleeved outside the vertical guide (71).