CN111348424A

CN111348424A - Material sucking mechanism and material conveying device

Info

Publication number: CN111348424A
Application number: CN202010159484.XA
Authority: CN
Inventors: 李戴
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Oppo Chongqing Intelligent Technology Co Ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-06-30

Abstract

The invention provides a material conveying device which comprises a material suction mechanism and a manipulator or a motion module connected with the material suction mechanism, wherein the material suction mechanism comprises a mounting seat and a plurality of suction nozzle modules, each suction nozzle module is detachably connected with the mounting seat, each suction nozzle module comprises a plurality of suction nozzle pieces, the number and/or the position distribution of the suction nozzle pieces on each suction nozzle module are different, and the manipulator or the motion module drives the material suction mechanism to move. When the material suction mechanism needs to suck different products, the corresponding suction nozzle module can be quickly replaced, namely, the suction disc can be quickly replaced, so that the production line can be quickly converted to produce different products, and the production efficiency is improved. The invention also provides a material sucking mechanism.

Description

Material sucking mechanism and material conveying device

Technical Field

The invention relates to the field of material conveying, in particular to a material sucking mechanism for conveying a product to be added and a material conveying device with the material sucking mechanism.

Background

In the surface mount technology production process, various kinds of automation equipment are generally required, and when the process involving the transportation and assembly of the PCB is performed, the PCB is generally sucked up by a material conveying device with a suction cup and then is subjected to other actions. Generally, a production line may be used for producing a plurality of different types of products, and therefore, the suction cups of the material delivery device are required to be compatible with the corresponding products. To achieve this function, the suction cup is usually designed to be adjustable, that is, the position of each nozzle piece of the suction cup is adjusted to correspond to the adsorption surface on the PCB when different models of products are produced. However, it often takes a long time to debug the sucker, and the debugging effects may be different for different debugging personnel, which may cause the situation that the equipment stability is inconsistent when multiple production lines produce the same product; therefore, the scheme cannot meet the flexible production mode of small batch and multiple varieties required by the industry.

Disclosure of Invention

The invention provides a material sucking mechanism capable of quickly replacing a sucking disc and a material conveying device with the material sucking mechanism.

The invention provides a material suction mechanism which is characterized by comprising a mounting seat and a plurality of suction nozzle modules, wherein each suction nozzle module is detachably connected to the mounting seat and comprises a plurality of suction nozzle pieces, and the number and/or the position distribution of the suction nozzle pieces on each suction nozzle module are different.

The invention also provides a material conveying device, which comprises a material suction mechanism and a manipulator or a motion module connected with the material suction mechanism, wherein the material suction mechanism comprises a mounting seat and a plurality of suction nozzle modules, each suction nozzle module is detachably connected with the mounting seat, each suction nozzle module comprises a plurality of suction nozzle pieces, the number and/or the position distribution of the suction nozzle pieces on each suction nozzle module are different, and the manipulator or the motion module drives the material suction mechanism to move.

The material suction mechanism of the material conveying device comprises a plurality of suction nozzle modules and a mounting seat, wherein each suction nozzle module comprises a plurality of suction nozzle pieces, and the suction nozzle pieces are used for sucking products so as to facilitate the carrying or assembly of the products; the number and/or the position distribution of the suction nozzle pieces on different suction nozzle modules are different, so that the suction nozzle pieces on the suction nozzle modules can suck different products; and each suction nozzle module is detachably connected to the mounting seat, namely, different suction nozzle modules can be replaced by one mounting seat. When the material suction mechanism needs to suck different products, the corresponding suction nozzle module can be quickly replaced, namely, the suction disc can be quickly replaced, so that the production line can be quickly converted to produce different products, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a material suction mechanism in one embodiment of the present invention.

Fig. 2 is a schematic perspective view of the suction mechanism in fig. 1 from another perspective.

Fig. 3 is an exploded perspective view of the suction mechanism of fig. 1.

Fig. 4 is an exploded perspective view of the suction mechanism of fig. 2.

Fig. 5 to 7 are schematic views illustrating an installation process of the suction mechanism in fig. 1.

Fig. 8 is a schematic structural diagram of a feeding device in one embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. Directional phrases used in this application, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the application and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the application.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of a material suction mechanism 100 according to an embodiment of the present invention; FIG. 2 is a schematic perspective view of the suction mechanism 100 of FIG. 1 from another perspective; FIG. 3 is an exploded perspective view of the suction mechanism 100 of FIG. 1; fig. 4 is an exploded perspective view of the suction mechanism 100 in fig. 2. The material suction mechanism 100 in one embodiment of the present invention is used for sucking a product, such as a PCB, the material suction mechanism 100 includes a mounting base 20 and a plurality of nozzle modules 40, each nozzle module 40 is detachably connected to the mounting base 20, each nozzle module 40 includes a plurality of nozzle pieces 42, and the nozzle pieces 42 of each nozzle module 40 are different in number and/or different in position distribution. Only one of the nozzle modules 40 is depicted, and the other nozzle modules have a structure similar to that of the nozzle module 40 in the drawing, except that the number and/or the position distribution of the plurality of nozzle pieces 42 on the nozzle module are different, i.e., the number and/or the position distribution of the nozzle pieces 42 of each nozzle module are designed according to different products, such as PCB products, so that each nozzle module can rapidly and stably suck the corresponding product.

On the automation equipment of each link of SMT production technology, inhale material mechanism 100 and set up the station that needs to carry out PCB product transportation, and make inhale material mechanism 100 and connect in vacuum generator and manipulator or motion module to realize inhale the absorption of material mechanism 100 to the PCB product, transport etc.. When SMT production is performed on different PCB products, the corresponding suction nozzle module needs to be selected, the original suction nozzle module on the mounting base 20 is taken down, and the corresponding suction nozzle module is replaced.

The material suction mechanism 100 of the present invention comprises a plurality of suction nozzle modules 40 and a mounting base 20, each suction nozzle module 40 comprises a plurality of suction nozzle pieces 42, and the plurality of suction nozzle pieces 42 are used for sucking products such as PCBs, so as to carry or assemble the products; the nozzle pieces 42 on different nozzle modules 40 are different in number and/or position distribution, and thus, the nozzle pieces 42 on the respective nozzle modules 40 can suck different products such as PCB products; and each suction nozzle module 40 is detachably coupled to the mount 20, i.e., one mount 20 can be exchanged for a different suction nozzle module 40. When the material sucking mechanism 100 needs to suck different products, the corresponding suction nozzle module 40 can be quickly replaced, which is equivalent to quickly replacing the suction disc, so that the SMT production line can quickly convert to produce different PCB products, and the production efficiency is improved. That is, when the production is switched to different products, compared with the prior art that the nozzle pieces 42 are required to be debugged, the suction mechanism 100 of the present invention can directly replace the nozzle modules 40, which can greatly shorten the debugging time, and is not influenced by the technical level of the debugging personnel, thereby improving the operation stability of the suction mechanism 100 and meeting the small-batch and multi-variety elastic production mode required by the industry.

The mounting base 20 comprises a mounting frame 22 and a plurality of air pipe connectors 24 arranged on the mounting frame 22, each suction nozzle module 40 further comprises a connecting piece 44, a plurality of suction nozzle pieces 42 are connected to the connecting piece 44, the connecting piece 44 is detachably connected to the mounting frame 22, and therefore the suction nozzle pieces 42 are communicated with the air pipe connectors 24 respectively.

The mounting frame 22 is provided with a receiving cavity 220, each air pipe joint 24 is communicated with the receiving cavity 220, and the connecting piece 44 is detachably received in the receiving cavity 220. When the connector 44 is received in the receiving cavity 220 of the mounting bracket 22, each air pipe connector 24 communicates with the corresponding suction nozzle 42.

The mounting frame 22 is provided with a locking groove 224 on an inner surface of the receiving cavity 220, the locking groove 224 extends along an insertion direction of the connecting member 44 into the mounting frame 22, and the connecting member 44 is provided with a locking strip 442 corresponding to the locking groove 224. In other embodiments, the mounting frame 22 is provided with a clamping strip on an inner surface of the accommodating cavity 220, the clamping strip extends along an insertion direction of the connecting member 44 into the mounting frame 22, and the connecting member 44 is provided with a clamping groove corresponding to the clamping strip.

Specifically, as shown in fig. 3 and 4, the mounting frame 22 includes a rectangular top plate 221 and connecting walls 223 disposed at two opposite sides of the top plate 221, and the top plate 221 and the two connecting walls 223 enclose the accommodating cavity 220. The side surface of each connecting wall 223 facing the accommodating cavity 220 is provided with the locking groove 224, and two opposite ends of the locking groove 224 respectively penetrate through two opposite end surfaces of the connecting wall 223. A support piece 225 extends outwards from the middle of one end of the top plate 221, and the support piece 225 is provided with a plurality of through holes 2251. The mounting frame 22 is provided with at least one through hole 226, and in this embodiment, two spaced through holes 226 are provided at an end of the top plate 221 away from the supporting piece 225.

The top plate 221 is provided with at least one lightening hole 227 so as to lighten the weight of the mounting frame 22; in this embodiment, the top plate 221 is provided with four lightening holes 227, and each lightening hole 227 penetrates through the top surface and the bottom surface of the top plate 221. The top plate 221 is provided with a plurality of connecting holes 228, and the connecting holes 228 are used for connecting the material suction mechanism to a manipulator or a motion module; in this embodiment, two connecting holes 228 are formed in the middle of the top surface of the top plate 221.

In other embodiments, the top plate 221 may be provided with two, three or more than four lightening holes, and the lightening holes may also be recesses provided on the top plate 221.

As shown in fig. 3 and 4, the mounting base 20 further includes a sealing member 26, and the sealing member 26 is used for connecting the air pipe connectors 24 to the mounting frame 22. The sealing element 26 is a cuboid, and the sealing element 26 comprises a top surface 261 and a bottom surface which are opposite, two side surfaces 262 which are opposite and two end surfaces which are opposite; the sealing member 26 is provided with a plurality of spaced vent holes 264, the plurality of vent holes 264 are arranged along the length direction of the sealing member 26, and each vent hole 264 penetrates through two opposite side surfaces 262 of the sealing member 26. One end of each vent hole 26 is inserted with an insertion pipe 265, and the insertion pipe 265 is communicated with the corresponding vent hole 26; each of the plug tubes 265 is fitted with a sealing ring 267. In this embodiment, the sealing member 26 has four vent holes 264.

A plurality of fixing holes 268 are formed in the top surface of the sealing element 26, and each fixing hole 268 penetrates through the top surface and the bottom surface of the sealing element 26; in this embodiment, the opposite ends of the top surface of the sealing member 26 are respectively provided with fixing holes 268, and each fixing hole 268 is not communicated with the vent hole 264 on the sealing member 26.

As shown in fig. 3 and 4, the connecting member 44 is a rectangular body, which includes two opposite side surfaces 441, a top surface 443, a bottom surface 444, and two opposite end surfaces 445; each side 441 is provided with a corresponding strip 442 of the slot 224, and the strips 442 extend along the length of the connecting member 44. A plurality of flow passages 447 are arranged in the connecting piece 44, first ends of the flow passages 447 penetrate through the bottom surface 444 of the connecting piece 44 to form a plurality of nozzle holes 4472, and each nozzle hole 4472 is used for communicating with a corresponding nozzle piece 42; second ends of the plurality of flow passages 447 are formed through an end surface 445 of the connecting member 44 to form a plurality of connecting holes 4474, and the plurality of air pipe connectors 24 are respectively connected to the plurality of connecting holes 4474. The number and the positions of the plurality of nozzle holes 4472 are designed according to the characteristics of the product to be produced, for example, the number and the positions of the nozzle holes 4472 of the connecting piece 44 are designed according to different PCB products, and after each nozzle hole 4472 is connected with the nozzle piece 42, the nozzle module 40 can conveniently and stably suck the corresponding PCB; for example, when the surface of the product is uneven, the corresponding connecting hole 4474 may be processed into a counter bore according to the height difference, and specifically, the bottom surface of the connecting member 44 is provided with a recessed portion 4475 around at least one nozzle hole 4472.

The plurality of connecting holes 4474 are arranged at intervals on the end surface 445, and the plurality of connecting holes 4474 correspond to the plurality of vent holes 264, i.e. the plurality of insertion tubes 265 of the sealing member 26 can be inserted into the plurality of connecting holes 4474 of the connecting member 44, respectively. In this embodiment, the connecting member 44 is provided with four flow passages 447 spaced from each other, each flow passage 447 extends along the length direction of the connecting member 44, and the connecting holes 4474 of the four flow passages 447 penetrate through the end surface 445 of the connecting member 44 and are arranged along the length direction of the end surface 445.

The end surface 445 of the connecting member 44 is provided with an annular positioning groove 4475 around each connecting hole 4474, and the positioning groove 4475 is used for accommodating the sealing ring 267. Two opposite side surfaces 441 of the connecting piece 44 are provided with machining holes 4412 communicated with the corresponding flow passages 447, and the machining holes 4412 are used for assisting in machining the flow passages 447 of the connecting piece 44. Specifically, one side of the connecting piece 44 is provided with a processing hole 4412 communicated with the corresponding flow passage 447, and the other side is provided with a processing hole 4412 communicated with the other flow passage 447.

The connecting member 44 is provided with at least one pin hole 4431 corresponding to the at least one through hole 226 of the mounting bracket 22; specifically, one end of the top surface 443 of the connecting member 44, which is far away from the connecting hole 4474, is provided with two spaced pin holes 4431, and when the connecting member 44 is accommodated in the accommodating cavity 220 of the mounting bracket 22, the two pin holes 4431 respectively face the two through holes 226.

The connecting member 44 is provided with at least one lightening hole 4433 to lighten the weight of the connecting member 44. In this embodiment, the connecting member 44 is provided with five lightening holes 4433, and the shapes and sizes of the lightening holes 4433 may be different or the same; each lightening hole 4433 penetrates the top 443 and the bottom 444 of the connector 44. In other embodiments, the connecting member 44 may be provided with less than five or more than five lightening holes, which may also be recesses provided on the top 443 and/or bottom 444 of the connecting member 44.

As shown in fig. 2 to 4, each nozzle piece 42 includes a connecting pipe 422 and a nozzle 423 disposed at an end of the connecting pipe 422 away from the connecting piece 44, and an end of the connecting pipe 442 away from the nozzle 423 is inserted into the nozzle hole 4472 of the corresponding flow channel 447; if the suction nozzle hole 4472 has a recess 4475 around it, an end of the connection pipe 442 remote from the suction nozzle 423 is received in the recess 4475. An inserting pipe 425 is axially and convexly arranged at one end of each suction nozzle piece 42 far away from the suction nozzle 423, and the inserting pipe 425 is used for being fixedly inserted into the suction nozzle hole 4472, so that the flow channel 447 is communicated with the suction nozzle 423 through the inserting pipe 425.

When the material suction mechanism 100 is assembled, the air pipe joints 24 are respectively inserted into the air holes 264 of the sealing element 26; the sealing member 26 is accommodated in the accommodating cavity 220 of the mounting bracket 22, the top surface 261 of the sealing member 26 is attached to the support plate 225, the two fixing holes 268 are respectively aligned with the two through holes 2251, and the two screws are respectively inserted into the two through holes 2251 and then locked to the corresponding fixing holes 268. At this time, the plurality of air tube connectors 24 are fixed to the supporting pieces 225 of the mounting bracket 22 by the sealing members 26, and the plurality of air tube connectors 24 face the accommodating cavities 220 of the mounting bracket 22. The plurality of nozzle pieces 42 are respectively inserted into the nozzle holes 4472 of the connecting member 44, and specifically, the insertion tube 425 of each nozzle piece 42 is inserted into the corresponding nozzle hole 4472, so that the nozzles 423 of the nozzle pieces 42 communicate with the corresponding flow channels 447.

Referring to fig. 5 to 7 together, fig. 5 to 7 are schematic views illustrating an installation process of the suction mechanism 100, in which a sealing screw is used to seal the machining hole 4412 of the connecting member 44 to prevent vacuum leakage; specifically, the sealing screw needs to be wound with a sealing tape and then screwed into the processing hole 4412 of the connecting piece 44; facing the end surface 445 of the suction nozzle module 40 with the connecting hole 4474 to the end of the accommodating cavity 220 of the mounting base 20 far away from the sealing element 26, and making the two clamping strips 442 of the connecting piece 44 respectively face the two clamping grooves 224 of the mounting base 20; the connecting member 44 is inserted into the receiving cavity 220 of the mounting base 20, so that the two clamping strips 442 of the connecting member 44 respectively slide in the two clamping grooves 224 until the plurality of inserting pipes 265 are respectively inserted into the plurality of connecting holes 4474 of the connecting member 44, the sealing ring 267 on each inserting pipe 265 is accommodated in the corresponding positioning groove 4475, each sealing ring 267 is clamped between the connecting member 44 and the sealing member 26, so that each connecting hole 4474 is hermetically connected with the corresponding inserting pipe 265, and vacuum leakage is prevented when the mounting base 20 and the nozzle module 40 are mounted together. The two pins 70 are inserted into the two through holes 226 of the mounting bracket 22 and the two pin holes 4431 of the connecting member 44, respectively, so that the mounting bracket 22 and the connecting member 44 are fixed relative to each other. At this time, each suction nozzle 423 is connected to the corresponding air pipe connector 24 through the corresponding connection pipe 422, the flow passage 447 and the insertion pipe 265.

As shown in fig. 8, the present invention further provides a material conveying device, which includes a material suction mechanism 100 and a manipulator 500 connected to the material suction mechanism 100, wherein the material suction mechanism 100 includes a mounting base 20 and a plurality of nozzle modules 40, each nozzle module 40 is detachably connected to the mounting base 20, each nozzle module 40 includes a plurality of nozzle pieces 42, and the nozzle pieces 42 on each nozzle module 40 are different in number and/or different in position distribution; the manipulator 500 drives the material suction mechanism 100 to move. Specifically, the robot 500 is connected to the suction mechanism 100 through the connection hole 228; the air tube connectors 24 are respectively connected to one ends of the air tubes 800, and the other ends of the air tubes 800 are connected to a vacuum generator which enables the suction nozzle 423 to have a vacuum so as to stably suck the PCB.

Before production, corresponding nozzle modules 40 are designed in advance according to the characteristics of different PCB products, namely the number and the positions of the nozzle pieces 42 on each nozzle module 40 are designed according to the characteristics of the corresponding PCB products; when SMT production is carried out on different PCB products, only the corresponding suction nozzle module 40 needs to be replaced, and the suction nozzle piece 42 does not need to be debugged. When the suction nozzle module 40 needs to be replaced, the pin 70 is pulled out, the suction nozzle module 40 is quickly withdrawn, and then the corresponding suction nozzle module 40 is inserted into the accommodating cavity 220 of the mounting base 20. Compared with the prior art, the debugging of the sucker can greatly shorten the debugging time, and is not influenced by the technical level of debugging personnel, so that the running stability of the material conveying device is improved; therefore, the production transferring efficiency of the material conveying device is greatly improved, the consistency is ensured, and the stability reduction of the material conveying device caused by different levels of debugging personnel is avoided.

In other embodiments, the material sucking mechanism 100 may also be connected to a motion module, and the motion module drives the material sucking mechanism 100 to move.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims

1. The utility model provides a material suction mechanism which characterized in that, includes mount pad and a plurality of suction nozzle module, each suction nozzle module detachably connect in the mount pad, each suction nozzle module includes a plurality of suction nozzle spare, and the quantity of the suction nozzle spare on each suction nozzle module is different and/or the position distribution is different.

2. The suction mechanism as claimed in claim 1, wherein the mounting base includes a mounting frame and a plurality of air pipe joints disposed on the mounting frame, each suction nozzle module further includes a connecting member, a plurality of the suction nozzle pieces are connected to the connecting member, and the connecting member is detachably connected to the mounting frame, so that the plurality of the suction nozzle pieces are respectively communicated with the plurality of air pipe joints.

3. The suction mechanism as claimed in claim 2, wherein the mounting frame is provided with a receiving cavity, each air pipe joint is communicated with the receiving cavity, and the connecting piece is detachably received in the receiving cavity.

4. A suction mechanism as claimed in claim 3, wherein the connecting member is inserted into the receiving cavity of the mounting bracket, and each air pipe connector communicates with a corresponding suction nozzle member.

5. The suction mechanism as claimed in claim 4, wherein said mounting frame is provided with at least one through hole, said connecting member is provided with a pin hole corresponding to at least one of said through holes, and a pin is inserted into said pin hole through said through hole, so that said connecting member and said mounting frame are relatively fixed.

6. The suction mechanism as claimed in claim 4, wherein the mounting frame is provided with a locking groove on an inner surface of the accommodating cavity, the locking groove extends along an insertion direction of the connecting piece, and the connecting piece is provided with a locking strip corresponding to the locking groove; or the mounting frame is provided with a clamping strip on the inner surface of the accommodating cavity, the clamping strip extends along the insertion direction of the connecting piece, and the connecting piece is provided with a clamping groove corresponding to the clamping strip.

7. The material suction mechanism as claimed in claim 6, wherein the mounting bracket includes a top plate and two connecting walls disposed at two opposite sides of the top plate, the top plate and the two connecting walls define the accommodating cavity, a side of each connecting wall facing the accommodating cavity is provided with the engaging slot or the engaging strip, the connecting member includes two opposite sides, and each side is provided with the engaging strip corresponding to the engaging slot or the engaging slot corresponding to the engaging strip.

8. The suction mechanism as claimed in claim 7, wherein said top plate is provided with at least one lightening hole to lighten the weight of said mounting frame.

9. A suction mechanism according to claim 7, characterized in that the top plate is provided with a number of connection holes for connecting the suction mechanism to a robot arm or a motion module.

10. A suction mechanism as claimed in claim 3, wherein the connecting member has a plurality of flow passages therein, first ends of the flow passages penetrating the bottom surface of the connecting member to form a plurality of nozzle holes, each nozzle hole communicating with a corresponding nozzle member; the second ends of the plurality of runners penetrate through one end face of the connecting piece to form a plurality of connecting holes, and the plurality of air pipe joints are respectively communicated with the plurality of connecting holes.

11. The material suction mechanism as claimed in claim 10, wherein the connecting holes of the plurality of flow passages are arranged at intervals on the end surface of the connecting member, the plurality of air pipe joints are connected to the mounting frame through sealing members, and the plurality of air pipe joints are respectively inserted into the connecting holes of the plurality of flow passages.

12. The suction mechanism as claimed in claim 11, wherein said sealing member is provided with a plurality of spaced ventilation holes, each ventilation hole penetrating through opposite sides of said sealing member, said plurality of ventilation holes corresponding to said plurality of connection holes of said connection member, respectively; one end of each vent hole is inserted with an insertion pipe, the insertion pipe is used for being inserted into the corresponding connecting hole, and the other end of each vent hole is inserted with an air pipe joint.

13. A suction device according to claim 12, characterized in that a sealing ring is fitted on each of the insertion tubes, said sealing ring being clamped between said sealing element and said connecting element.

14. The flow channel as claimed in claim 10, wherein each nozzle member comprises a connecting tube and a nozzle disposed at one end of the connecting tube, and one end of the connecting tube away from the nozzle is inserted into the nozzle hole of the corresponding flow channel.

15. The suction mechanism as claimed in claim 14, wherein the bottom surface of the connecting member is provided with a recess around the at least one nozzle hole, and an end of the connecting pipe remote from the nozzle is received in the recess.

16. The suction mechanism as claimed in claim 10, wherein said connecting member is provided with lightening holes to lighten the weight of said connecting member.

17. The material conveying device is characterized by comprising a material sucking mechanism and a manipulator or a motion module connected with the material sucking mechanism, wherein the material sucking mechanism comprises a mounting seat and a plurality of suction nozzle modules, each suction nozzle module is detachably connected with the mounting seat and comprises a plurality of suction nozzle pieces, the number and/or the position distribution of the suction nozzle pieces on each suction nozzle module are different, and the manipulator or the motion module drives the material sucking mechanism to move.