CN117125404A - Negative pressure device and conveying mechanism - Google Patents
Negative pressure device and conveying mechanism Download PDFInfo
- Publication number
- CN117125404A CN117125404A CN202311379924.2A CN202311379924A CN117125404A CN 117125404 A CN117125404 A CN 117125404A CN 202311379924 A CN202311379924 A CN 202311379924A CN 117125404 A CN117125404 A CN 117125404A
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- negative pressure
- unit
- units
- air bag
- conveyer belt
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- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 230000009975 flexible effect Effects 0.000 claims abstract description 40
- 230000008093 supporting effect Effects 0.000 claims abstract description 16
- 238000007790 scraping Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/58—Belts or like endless load-carriers with means for holding or retaining the loads in fixed position, e.g. magnetic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0214—Articles of special size, shape or weigh
- B65G2201/022—Flat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Belt Conveyors (AREA)
Abstract
The application discloses a negative pressure device and a conveying mechanism, and belongs to the technical field of PCB conveying devices. The negative pressure device comprises a supporting plate, an air bag unit fixed on the supporting plate and a negative pressure box connected to the air bag unit. Through setting up the negative pressure case into a plurality of negative pressure units to in a plurality of gasbag units that follow first direction interval set up in with the gasbag subassembly, at least two gasbag units are located the negative pressure unit below and support the negative pressure unit, make negative pressure device use with among the conveying mechanism, when the conveyer belt is lax, loose conveyer belt has down force to the negative pressure unit, this down force can transmit to the gasbag unit and make the gasbag unit compressed, thereby reduce the conveyer belt to the down force of negative pressure unit, reduce the conveyer belt vibration that leads to because of scraping between conveyer belt and the negative pressure unit, thereby make the negative pressure unit can provide sufficient negative pressure suction for the flexible sheet on the conveyer belt.
Description
Technical Field
The application belongs to the technical field of PCB conveying devices, and particularly relates to a negative pressure device and a conveying mechanism.
Background
For in PCB manufacturing procedure, carry flexible sheet such as PP board, copper foil board or CCL board adopts the conveyer belt generally to set up the negative pressure case in the conveyer belt below and provide negative pressure suction for the conveyer belt, with the flexible sheet on the conveyer belt absorption on the conveyer belt, so that flexible sheet tiling on the conveyer belt, thereby can cooperate surface defect detection device to detect the discernment to the surface of flexible sheet in the transportation process.
In the related art, the negative pressure device is fixed on the support of the conveying mechanism, and the negative pressure device is parallel to and attached to the belt surface of the conveying belt so as to provide sufficient negative pressure suction force for the conveying belt through the negative pressure device. After the conveyer belt is used for a long time, the conveyer belt can relax, the phenomenon of scraping can appear in the conveyer belt after the relaxation with the edge of negative pressure device, leads to the conveyer belt to appear vibrating and shake in the conveying process to make the flexible sheet that the conveyer belt was transported receive vibration and shake, lead to the flexible sheet to appear displacement and rotation for the conveyer belt from this, thereby cause the rate of accuracy of surface defect inspection device to drop.
Disclosure of Invention
The application aims to at least solve the technical problem that the existing conveyer belt is scratched between the conveyer belt and a negative pressure device after loosening to a certain extent. To this end, the application provides a negative pressure device and a conveying mechanism.
The negative pressure device provided by the embodiment of the application comprises: the negative pressure box comprises a plurality of negative pressure units, the negative pressure units are arranged along the first direction, two adjacent negative pressure units are connected with flexible pieces, the upper part of the negative pressure box is used for supporting the conveying belt, and the first direction is the conveying direction of the conveying belt; an air bag assembly is fixed on the supporting plate and comprises a plurality of air bag units, the air bag units are sequentially arranged at intervals along a first direction, and the air bag units support the negative pressure box; wherein, each negative pressure unit is provided with at least two air bag units positioned in the same air bag assembly below.
Alternatively, in order to better realize the present application, a plurality of the airbag units within the airbag module communicate with each other through the connection passage.
Alternatively, in order to better implement the present application, the middle part of the air bag unit is embedded on the support plate.
Alternatively, in order to better implement the application, the top surface of the negative pressure unit is provided with a guiding surface on the side facing the first direction.
Alternatively, in order to better implement the present application, the plurality of air bag modules are arranged at intervals along a second direction, the second direction is perpendicular to the first direction on a horizontal plane, and each air bag module is provided with at least two air bag units below each negative pressure unit.
Alternatively, in order to better implement the present application, the airbag units are staggered in two adjacent airbag modules.
Alternatively, in order to better implement the present application, the distance between two adjacent air bag units is smaller than or equal to the diameter of the air bag units.
Alternatively, in order to better implement the present application, a connection member is connected between the flexible member and the support plate.
Alternatively, in order to better implement the present application, the flexible member is a rubber belt.
The embodiment of the application also provides a conveying mechanism which comprises a conveying belt and the negative pressure device, wherein the negative pressure device is arranged below the conveying belt, and the upper surface of the negative pressure box is attached to the conveying belt.
Compared with the prior art, the application has the following beneficial effects:
according to the negative pressure device provided by the application, the negative pressure box is arranged into the plurality of negative pressure units which are arranged along the conveying direction of the conveying belt, the supporting plate is arranged below the negative pressure box, and the air bag assembly is arranged on the supporting plate to support the negative pressure units, so that the negative pressure box can be arranged above the air bag assembly. After being applied to the conveyer belt with negative pressure device, then can carry out spacingly to the negative pressure case through the gasbag subassembly in conveyer belt and the backup pad, after the conveyer belt is lax, the conveyer belt of lax has down force to the negative pressure case, the lower pressure that the conveyer belt of different positions produced is different, and is respectively on different negative pressure unit, carry out the dispersion support to the conveyer belt by the negative pressure unit, at least two gasbag units under every negative pressure unit can make conveyer unit and conveyer belt laminating, guarantee that the negative pressure unit can be stable to the conveyer belt and the flexible sheet that carries on the conveyer belt provides the adsorption affinity. Meanwhile, the air bag unit can also play a role in damping the negative pressure unit, and vibration of a conveying belt above the negative pressure unit is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic installation of a negative pressure device with a conveyor belt;
FIG. 2 shows a schematic structural view of the negative pressure device in FIG. 1;
FIG. 3 shows a schematic view of the support plate and bladder assembly of FIG. 2;
FIG. 4 shows a partial enlarged view at A in FIG. 2;
fig. 5 shows a schematic view of the connection of the rubber band to the support plate.
Reference numerals:
100-conveying belt; 200-negative pressure device; 210-a support plate; 220-an airbag module; 221-an airbag unit; 222-connection channel; 230-a negative pressure tank; 231-a negative pressure unit; 232-suction port; 233-air outlet; 234-guide surfaces; 240-a flexible member; 250-connection piece.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:
the embodiment of the application provides a negative pressure device 200, as shown in fig. 1, the negative pressure device 200 can be installed below a conveyer belt 100 of a conveying mechanism, and the problem that a scraping phenomenon occurs between the conveyer belt 100 and the negative pressure device 200 due to the looseness of the conveyer belt 100 and a vibration phenomenon of the conveyer belt 100 due to the scraping phenomenon are solved. In this embodiment, the upper side of the conveying belt 100 refers to the direction in which the conveying surface of the conveying belt for conveying the PCB board is located, and the lower side of the conveying belt 100 is opposite to the upper side of the conveying belt, which is the direction in which the other side of the conveying belt 100 opposite to the conveying surface is located.
Specifically, the negative pressure device 200, as shown in fig. 2, 3 and 4, includes a support plate 210, an airbag module 220 and a negative pressure tank 230. The support plate 210 provides a support and mounting base for the airbag module 220 and the negative pressure tank 230. The support plate 210 is a plate body, the air bag module 220 is disposed on the support plate 210, the air bag module 220 is fixed and supported by the support plate 210, the negative pressure tank 230 is disposed on the top of the air bag module 220, and the air bag module 220 supports the negative pressure tank 230. When the negative pressure device 200 is used, the negative pressure device 200 is integrally positioned below the conveyor belt 100, the negative pressure tank 230 is fixed between the conveyor belt 100 and the air bag assembly 220 under the combined action of the air bag assembly 220 and the conveyor belt 100, and the air bag assembly 220 can provide elastic supporting force for the negative pressure tank 230 so as to play a role in damping the negative pressure tank 230. The conveyance direction of the conveyance belt 100 is set to be a first direction, and a direction perpendicular to the first direction on a horizontal plane is set to be a second direction.
In the negative pressure tank 230, the negative pressure tank 230 includes a plurality of negative pressure units 231, the plurality of negative pressure units 231 are arranged along the first direction, and the flexible members 240 are connected between two adjacent negative pressure units 231, so that the two adjacent negative pressure units 231 can relatively move through the flexible members 240, and meanwhile, the two adjacent negative pressure units 231 can move within the flexible range of the flexible members 240, so that the plurality of negative pressure units 231 are connected into a whole, and the phenomenon that the negative pressure units 231 fall singly can be avoided. The top of the negative pressure unit 231 is capable of generating negative pressure suction to cooperate with the conveyor belt 100 to effect the suction of the flexible sheet conveyed on the conveyor belt 100 onto the laminating and conveyor belt 100.
In this embodiment, each negative pressure unit 231 is an independent sealed box structure, a cavity is formed in the negative pressure unit 231, a plurality of air inlets 232 communicated with the cavity are formed in the top of the negative pressure unit 231, and an air outlet 233 for connecting a negative pressure pump is formed in the side wall of the negative pressure unit 231. By the arrangement, the magnitude of the negative pressure suction force generated by each negative pressure unit 231 can be more uniform, and even if the negative pressure suction force at the top of the negative pressure unit 231 is insufficient due to the fact that the sealing is not tight, the negative pressure suction force of the top of the negative pressure unit 231 is not influenced by the other negative pressure units 231. After the negative pressure unit 231 is connected with the negative pressure pump through the flexible pipeline and the negative pressure pump is started, negative pressure suction generated by the negative pressure pump acts in the cavity of the negative pressure unit 231, the cavity of the negative pressure unit 231 acts on the conveying belt 100 through the air suction port 232, and the air holes on the conveying belt 100 act on the conveying surface of the conveying belt 100 and above the conveying surface to adsorb and fix the PCB conveyed on the conveying surface of the conveying belt 100 so as to finish subsequent CCD detection and identification on the upper surface of the PCB.
In the airbag module 220 described above, the airbag module 220 includes a plurality of airbag units 221 therein, and the plurality of airbag units 221 within the airbag module 220 are arranged at intervals along the first direction. Each of the air cells 221 may be made of rubber, and filled with air or inert gas therein to provide the air cells 221 with elasticity and vibration damping function.
In the plurality of air bag units 221 in the same air bag assembly 220, at least two air bag units 221 are respectively arranged below each negative pressure unit 231, and the at least two air bag units 221 support different positions of the negative pressure units 231, so that more stable supporting force can be provided for the negative pressure units 231, and the air bag assembly 220 can independently support all the negative pressure units 231. The air bag unit 221 can provide supporting force for the negative pressure unit 231, and the air bag unit 221 can be elastically deformed after being subjected to the extrusion force of the negative pressure box 230, so that different air bag units 221 respectively play a role in damping vibration of different negative pressure units 231.
The existing negative pressure box 230 is an integral body, the top surface of the negative pressure box 230 is a plane with a larger area, when the negative pressure box 230 supports the conveyer belt, the shaking phenomenon is easily caused on a part of the belt body above the negative pressure box 230 on the conveyer belt 100, and the deviation of the position of the flexible sheet conveyed on the conveyer belt 100 occurs because of being positioned or rotated, so that the accuracy of the subsequent surface defects is affected. In the present application, the negative pressure tank 230 is configured by a plurality of negative pressure units 231, and the area of the top surface of each negative pressure unit 231 is necessarily much smaller than the area of the top surface of the negative pressure tank 230, and each negative pressure unit 231 individually supports a part of the belt body of the conveyor belt 100. Since at least two airbag units 221 are provided below each negative pressure unit 231 to be supported, each negative pressure unit 231 can be individually moved under the support of the corresponding negative pressure unit 231. And the top of each negative pressure unit 231 can individually generate negative pressure suction.
Further, since the conveyor belt 100 itself has a certain bending radius, when the conveyor belt 100 is subjected to bending vibration, the bending portion of the conveyor belt 100 can be supported by the plurality of negative pressure units 231 in combination. So that each negative pressure unit 231 can rotate correspondingly following the bending of the conveyor belt 100, and each negative pressure unit 231 can keep fit at different positions of the conveyor belt 100 all the time. In addition, since each negative pressure unit 231 can independently generate negative pressure suction to the conveyer belt 100, the negative pressure suction generated by the negative pressure unit 231 can always act on the upper surface of the conveyer belt 100 under the state that the negative pressure unit 231 is attached to the conveyer belt 100, so that sufficient negative pressure suction is provided for the flexible sheet transported by the conveyer belt 100 above the negative pressure box 230, the flexible sheet is always attached to the conveyer belt 100, the phenomenon that deviation occurs due to relative shaking between the flexible sheet and the conveyer belt 100 is reduced or even avoided, and the accuracy of surface defect inspection of the flexible sheet in the subsequent process is ensured.
When the negative pressure device 200 is applied to the conveying mechanism, it is necessary to dispose the entire negative pressure device 200 below the conveyor belt 100, and the fixing of the support plate 210 and the airbag module 220 and the negative pressure tank 230 on the support plate 210 can be achieved by mounting the support plate 210 on the bracket of the conveying mechanism. When the conveyer belt 100 loosens and the edges of the conveyer belt 100 and the negative pressure units 231 in the negative pressure box 230 scratch, the scraping pressure of the conveyer belt 100 to the corresponding negative pressure units 231 is transferred and acts on the air bag units 221 supporting the scratched negative pressure units 231, so that the air bag units 221 are compressed, the negative pressure units 231 always keep fit with different positions of the conveyer belt 100 under the elastic supporting action of the air bag units 221 according to the bending direction of the conveyer belt 100 caused by the looseness, the included angle between the bending part of the conveyer belt 100 and the top surface of the negative pressure units 231 is reduced, and the scraping pressure between the conveyer belt 100 and the negative pressure box 230 is reduced, so that the vibration amplitude of the conveyer belt 100 caused by the scratch is reduced. Meanwhile, the negative pressure box 230 can vibrate synchronously after the conveyer belt 100 vibrates, and the air bag unit 221 can effectively absorb the vibration of the corresponding negative pressure unit 231, so that the negative pressure unit 231 in the negative pressure box 230 can keep a fitting state with the conveyer belt 100, a sufficient negative pressure suction force is provided for flexible sheets on the conveyer belt 100, the defect that the negative pressure suction force above the conveyer belt 100 is unstable and cannot meet the minimum negative pressure requirement due to the separation of the conveyer belt 100 from the negative pressure box 230 after the vibration of the conveyer belt 100 is avoided, and meanwhile, the vibration amplitude of the conveyer belt 100 after the relaxation can be reduced.
Of course, in the negative pressure device 200 provided in this embodiment, in the process of assembling the negative pressure device 200 with the conveying mechanism, due to the existence of the air bag assembly 220, the installation angle and the installation height of the negative pressure unit 231 can be adaptively changed, so that in the installation process, the negative pressure unit 231 and the conveying belt 100 can be more easily attached, and thus, whether the plane of the conveying belt 100 and the plane of the negative pressure box 230 are parallel does not need to be determined intentionally, and the assembly difficulty of the negative pressure device 200 and the conveying mechanism is reduced.
In addition, it is also required to propose that the shape of the air bag unit 221 is a spherical shape in the present embodiment, and the negative pressure unit 231 can be placed on the air bag unit 221 after which part of the surface of the air bag unit 221 can be flattened to support the negative pressure unit 231. Of course, in some alternative embodiments, the airbag unit 221 may also be a waist-shaped structure or a strip-shaped structure.
Further, in the negative pressure unit 231 described above, the top surface of the negative pressure unit 231 is provided with the guide surface 234 on the side facing the first direction. It should be noted that the top surface of the negative pressure unit 231 has a first side end and a second side end opposite to each other, the direction from the first side end to the second side end is the first direction, the direction from the second side end to the first side end is the direction facing the first direction, and the top surface of the negative pressure unit 231 is the first side end of the negative pressure unit 231 on the side facing the first direction. The guide surface 234 is an inclined plane, and the guide surface 234 is lower than the plane in which the top surface of the negative pressure unit 231 is located. The guide surface 234 is inclined downward from the second side end of the top surface of the negative pressure unit 231 toward the first side end. The provision of the guide surface 234 can reduce the scratch between the edge of the negative pressure unit 231 and the conveyor belt 100 when the conveyor belt 100 is conveyed in the first direction, thereby reducing the phenomenon of shaking of the conveyor belt 100 to some extent.
Further, in the present embodiment, the plurality of air bag units 221 in the same air bag module 220 described above are communicated through the connecting passage 222. The connection passage 222 may be a passage provided inside the support plate 210 or a passage formed of a pipe. By providing the connection passage 222, the air bag units 221 can be communicated with each other, and the air bag units 221 can be interlocked with each other. So that after one of the balloon units 221 is deformed by extrusion, part of the gas in the balloon can enter the adjacent balloon units 221 by extrusion, so that the volume of the adjacent two balloon units 221 is increased after the adjacent two balloon units 221 receive the part of the gas until the air pressure in the connected balloon units 221 is self-adaptive. In this way, when the conveyor belt 100 is bent by the shake, since the shake is continuously generated, it is inevitable that a part of the belt body of the conveyor belt 100 is bent toward the negative pressure unit 231 and a part of the belt body of the conveyor belt 100 is bent away from the negative pressure unit 231. The portion of the belt body of the conveyor belt 100 bent toward the negative pressure unit 231 may cause a greater pressing force to the negative pressure unit 231 such that the portion of the airbag unit 221 is subjected to the greater pressing force, and the portion of the airbag unit 221 may transmit gas into the other portion of the airbag unit 221 through the connection passage 222 such that the volume of the portion of the airbag unit 221 is reduced; the bending portion of the conveyor belt 100 away from the negative pressure unit 231 will reduce the acting force on the negative pressure unit 231, and the negative pressure unit 231 corresponding to the belt body of the conveyor belt 100 and the partial air bag unit 221 corresponding to the negative pressure unit 231 are at least a part of the other partial air bag unit 221, so that the volume of the partial air bag unit 221 is increased, and the corresponding negative pressure unit 231 can be better adhered to the conveyor belt 100. Particularly, when the loosening degree of the conveyor belt 100 is large, the air in the air bag unit 221 is transferred, so that the air bag unit 221 has a larger deformation range, and meanwhile, when the deformation amount of the air bag is larger, the required pressure is not increased significantly, so that the pressure of the conveyor belt 100 to the negative pressure unit 231 can be ensured to change adaptively to the air bag unit 221.
In the present embodiment, two adjacent air bag units 221 are connected to each other through a connecting passage 222. Specifically, the connection channel 222 is also made of elastic rubber, and the connection channel 222 is integrally formed with the airbag unit 221 to which it is connected during manufacturing.
In addition, the support plate 210 in this embodiment is provided with a mounting hole penetrating through the plate body, the air bag unit 221 is inserted into the mounting hole, and the top and bottom ends of the air bag unit 221 protrude out of the support plate 210, and the middle part of the air bag unit 221 is fixedly connected with the support plate 210, so that the middle part of the air bag unit 221 is embedded in the support plate 210. Both end surfaces of the support plate 210 have protruding air cell units 221 for supporting the negative pressure unit 231, so that there is no need to deliberately observe the orientation problem of the support plate 210. The fixing manner of the air bag unit 221 and the support plate 210 may be adhesive fixing, fixing by a connecting piece, or integrally molding the air bag unit 221 and the support plate 210. Preferably, the airbag unit in this embodiment is integrally formed with the support plate 210. If necessary, a skeleton may be provided in the support plate 210 to enhance the bending resistance of the support plate 210.
Of course, in some alternative embodiments, the mounting hole may be changed to a mounting groove, and the shape of the mounting groove may be adapted to the shape of the bottom of the air bag unit 221 so that the bottom of the air bag unit 221 can be inserted into the mounting groove, and the air bag unit 221 is fixed to the support plate 210. The top of the air bag unit 221 protrudes out of the support plate 210 to support the negative pressure unit 231, so that the air bag unit 221 protrudes out of only one side of the support plate 210.
In the present embodiment, in order to have a better support for the negative pressure unit 231, the airbag module 220 on the support plate 210 is provided in plurality, and the plurality of airbag modules 220 are disposed at intervals in the second direction. The second direction is perpendicular to the first direction in a horizontal plane, and when the negative pressure device 200 is applied to the conveying mechanism, the second direction is consistent with the broadband direction of the conveying belt 100. And, at least two airbags are positioned below the negative pressure unit 231 in each airbag module 220. Providing the plurality of airbag modules 220 can enable the airbag unit 221 in the plurality of airbag modules 220 to have multiple supports in both the first direction and the second direction for the negative pressure tank 230, thereby improving stability of the support for the negative pressure tank 230.
Further, after the plurality of airbag modules 220 are provided, the airbag units 221 in any adjacent two of the airbag modules 220 are staggered in the first direction. By this arrangement, the air bag units 221 in the adjacent air bag modules 220 can be arranged in a plum blossom shape, and support can be provided for different positions of the negative pressure unit 231, so that the stability of support for the negative pressure unit 231 can be further improved.
Preferably, in the present embodiment, the interval between adjacent two airbag units 221 is less than or equal to the diameter of the airbag unit 221. With this arrangement, on the one hand, the projection of the airbag units 221 in the plurality of airbag modules 220 in the first direction can be made seamless, thereby having the effect of continuously supporting the negative pressure tank 230 in the first direction.
Of course, the spacing between the plurality of air bag units 221 in the same air bag module 220 may also be set to be smaller than or equal to the diameter of the air bag unit 221 so that the air bag unit 221 has an effect of continuously supporting the negative pressure tank 230 in the second direction.
Optionally, the length of the flexible member 240 is adapted to the length of the negative pressure unit 231 connected with the flexible member 240, so that the flexible member 240 has a larger connection length with the negative pressure unit 231, thereby improving the connection stability of the flexible member 240 and the negative pressure unit 231.
Preferably, the flexible member 240 between two adjacent negative pressure units 231 is rubber, and the rubber has a flexible property and a certain elasticity, so that the adjacent negative pressure units 231 can be flexibly connected, and meanwhile, the rubber can play a certain role in vibration reduction. Of course, in some alternative embodiments, the flexible member 240 between two adjacent negative pressure units 231 may also be made of a material having only a flexible structure, such as a spring.
It should be noted that, as shown in fig. 5, in order to further limit the position of the negative pressure unit 231 in the negative pressure tank 230, the flexible member 240 may be connected to the support plate 210 by using the connecting member 250 in this embodiment, so that the connecting member 250 has a limiting effect on the flexible member 240 and limits the movement range of the negative pressure unit 231 in the first direction and the second direction, and at the same time, the swinging of the two negative pressure units 231 connected by the flexible member 240 is not affected.
Preferably, the connection member 250 is a bolt, and the threaded end of the bolt is connected to the support plate 210 after passing through the flexible member 240 from top to bottom. It should be noted that after the bolts are disposed, the nuts of the bolts should be positioned at a level lower than the height of the top surface of the suction box 230 (i.e., the upper surface of the suction box) so as to avoid direct contact between the bolts and the conveyor belt 100, and preferably, the nuts of the bolts may be embedded in the flexible member 240.
Based on the above-mentioned negative pressure device 200, the embodiment of the application further provides a conveying mechanism, and the conveying mechanism has a structure as shown in fig. 1, and includes a conveying belt 100 and the above-mentioned negative pressure device 200, the conveying belt 100 is driven by a driving wheel to realize the circulation movement of the conveying belt 100, the negative pressure device 200 is disposed below the conveying belt 100, and the negative pressure unit 231 in the negative pressure device 200 is attached to the conveying belt 100.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
Claims (10)
1. A negative pressure device, comprising:
the negative pressure box (230), the negative pressure box (230) comprises a plurality of negative pressure units (231), the negative pressure units (231) are arranged along a first direction, two adjacent negative pressure units (231) are connected with flexible pieces (240), the upper part of the negative pressure box (230) is used for supporting the conveying belt (100), and the first direction is the conveying direction of the conveying belt (100);
a support plate (210); an air bag assembly (220) is fixed on the supporting plate (210), the air bag assembly (220) comprises a plurality of air bag units (221), the air bag units (221) are sequentially arranged at intervals along a first direction, and the air bag units (221) support the negative pressure box (230);
wherein each negative pressure unit (231) has at least two of the airbag units (221) located in the same airbag module (220) below.
2. The negative pressure device according to claim 1, characterized in that a plurality of the airbag units (221) in the airbag module (220) communicate with each other through a connecting channel (222).
3. Negative pressure device according to claim 1, characterized in that the middle part of the airbag unit (221) is embedded on the support plate (210).
4. Negative pressure device according to claim 1, characterized in that the top surface of the negative pressure unit (231) is provided with a guiding surface (234) on the side facing the first direction.
5. The negative pressure device according to claim 1, wherein the plurality of air bag modules (220) are provided, the plurality of air bag modules (220) being arranged at intervals along a second direction, the second direction being perpendicular to the first direction in a horizontal plane, each air bag module (220) being provided with at least two air bag units (221) under each negative pressure unit (231).
6. The negative pressure device according to claim 5, characterized in that in two adjacent airbag modules (220), the airbag units (221) are staggered.
7. The negative pressure device according to claim 6, characterized in that the distance between two adjacent airbag units (221) is smaller than or equal to the diameter of the airbag unit (221).
8. The negative pressure device according to claim 1, characterized in that the flexible member (240) is a rubber band.
9. The negative pressure device according to claim 1, characterized in that a connection (250) is connected between the flexible element (240) and the support plate (210).
10. A conveying mechanism, characterized by comprising a conveying belt (100) and the negative pressure device according to any one of claims 1-9, wherein the negative pressure device is arranged below the conveying belt (100), and the upper surface of the negative pressure box (230) is attached to the conveying belt (100).
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| CN202311379924.2A CN117125404B (en) | 2023-10-24 | 2023-10-24 | Negative pressure device and conveying mechanism |
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