Vacuum generator and carrying mechanism

Abstract

The utility model provides a vacuum generator and a carrying mechanism, the vacuum generator comprises an air inlet flat nozzle and an air outlet flat nozzle which are arranged along a first direction, the air inlet flat nozzle is provided with an air inlet flat mouth with a through-flow area gradually reduced along the first direction, and the air outlet flat mouth is provided with a through-flow area gradually reduced along the first direction. The air outlet flat nozzle is provided with an air outlet flat opening with the through-flow area gradually enlarged in the first direction, and an air outlet of the air inlet flat opening and an air inlet of the air outlet flat opening are opposite and arranged in a spaced mode so that a negative pressure generation area can be formed between the end face of the air outlet of the air inlet flat opening and the end face of the air inlet of the air outlet flat opening. Compared with the prior art, the multi-point adsorption mechanism has the advantages that large-length adsorption can be realized on a carried object with a certain length by only adopting one vacuum generator, a plurality of vacuum generators in the prior art do not need to be configured to realize multi-point adsorption on the carried object with the large length, and the multi-point adsorption mechanism is simple in structural design and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component processing, in particular to a vacuum generator and a conveying mechanism. Background Art

[0002] In the machinery industry, the transportation of small objects is usually achieved by negative pressure adsorption, and negative pressure can be achieved in two main ways: one is to generate negative pressure by extracting air through a vacuum pump, and the other is to use the Bernoulli principle to generate negative pressure around high-speed airflow. The first method requires a high pump setting cost and is not conducive to setting up small and complex pipelines for use. The second method uses an air compressor to discharge high-speed airflow. Although negative pressure can be generated, the corresponding vacuum negative pressure adsorption head in the prior art is a circular structure, and its negative pressure adsorption range is relatively limited to a relatively small range adjacent to the circular adsorption port. As disclosed in the patent with application number CN201820586922.9, if negative pressure is to be generated over a large range, it is necessary to use multiple small vacuum generators in combination to achieve this, which will undoubtedly increase the manufacturing and maintenance costs of the device. Utility Model Content

[0003] The vacuum generator and the transport mechanism designed in the utility model can at least partially solve the above problems.

[0004] The utility model aims to provide a vacuum generator, comprising an air inlet flat nozzle and an air outlet flat nozzle arranged along a first direction, the air inlet flat nozzle having an air inlet flat port with a flow area gradually shrinking along the first direction, the air outlet flat nozzle having an air outlet flat port with a flow area gradually expanding along the first direction, the air outlet of the air inlet flat port being opposite to the air inlet of the air outlet flat port and being arranged at intervals to form a negative pressure generating area between the air outlet end face of the air inlet flat port and the air inlet end face of the air outlet flat port.

[0005] In some embodiments, the vacuum generator also includes a flat nozzle mounting seat, the flat nozzle mounting seat forms a flat nozzle mounting hole that passes through its first side and second side along the first direction, the air inlet flat nozzle is assembled on the upstream side of the flat nozzle mounting hole, and the air outlet flat nozzle is assembled on the downstream side of the flat nozzle mounting hole, the flat nozzle mounting seat also includes a third side between the first side and the second side, and a negative pressure port connected to the flat nozzle mounting hole is formed on the third side, and the position of the negative pressure port corresponds to the position of the negative pressure generating area.

[0006] In some embodiments, the air inlet flat nozzle is entirely inserted into the flat nozzle mounting hole, and the air inlet portion of the air outlet flat nozzle is inserted into the flat nozzle mounting hole; and / or a fixed connection structure is formed on the flat nozzle mounting seat.

[0007] In some embodiments, a first sealing ring is disposed around the negative pressure port, and a second sealing ring is disposed around the air inlet of the air inlet flat nozzle.

[0008] The utility model also provides a transport mechanism, comprising a vacuum generator, wherein the vacuum generator is the above-mentioned vacuum generator.

[0009] In some embodiments, the transport mechanism also includes an assembly plate and a feeding plate, which are stacked up and down and define a negative pressure cavity therebetween; an assembly groove for assembling the vacuum generator is formed on the end surface of the assembly plate facing away from the feeding plate, and a negative pressure hole is formed on the bottom wall of the assembly groove; the position of the negative pressure generating area of ​​the vacuum generator is adapted to the position of the negative pressure hole.

[0010] In some embodiments, a plurality of silencer grilles are provided on the bottom wall of the assembly groove, and a plurality of groups of the silencer grilles are provided in the air outlet area of ​​the air outlet flat nozzle; and / or, two assembly grooves are provided on the end surface of the assembly plate on one side away from the material picking plate; and / or, an air inlet cavity is also formed in the assembly plate, and the outlet of the air inlet cavity is connected to the air inlet of the air inlet flat nozzle, and the inlet of the air inlet cavity is connected to the air inlet nozzle.

[0011] In some embodiments, an air outlet grille is assembled on the area of ​​the assembly groove corresponding to the position of the sound-absorbing grille.

[0012] In some embodiments, a thin sheet connecting plate is assembled on the side of the assembly plate facing away from the material picking plate, the four corner areas of the thin sheet connecting plate are fixedly connected to the assembly plate via support columns, and a connecting head is provided in the central area of ​​the thin sheet connecting plate.

[0013] In some embodiments, a first limit pin and a second limit pin are further provided between the connecting head and the assembling plate to limit the maximum deformation of the thin-sheet connecting plate.

[0014] The vacuum generator and handling mechanism of the utility model:

[0015] Compared with the vacuum generator with a circular suction port in the prior art, since the air inlet flat nozzle and the air outlet flat nozzle are both flat structures, the negative pressure generating area formed can be a rectangular area, so that only one vacuum generator of the utility model can be used to achieve a longer suction of a transport object with a certain length (such as tape and / or welding tape), and there is no need to configure multiple vacuum generators in the prior art to achieve multi-point suction of a longer transport object. The structural design is simple and the manufacturing cost of the mechanism is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a vacuum generator according to an embodiment of the utility model.

[0017] Figure 2 yes Figure 1 Cross-sectional view of the vacuum generator.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the transport mechanism of the utility model (including the material receiving plate).

[0019] Figure 4 yes Figure 3 A schematic diagram of a three-dimensional structure in which some components are omitted.

[0020] Figure 5 yes Figure 3 Front view of the transport mechanism in FIG.

[0021] Figure 6 yes Figure 5 Cross-section view of AA.

[0022] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle.

[0023] In the figure:

[0024] 1. Vacuum generator; 11. Air inlet flat nozzle; 111. Air inlet flat port; 12. Air outlet flat nozzle; 121. Air outlet flat port; 13. Flat nozzle mounting seat; 132. Negative pressure port; 141. First sealing ring; 142. Second sealing ring; 2. Assembly plate; 21. Negative pressure hole; 22. Silence grille; 23. Air outlet grille; 24. Air inlet cavity; 25. Air inlet nozzle; 3. Material picking plate; 31. Adsorption air nozzle; 4. Thin sheet connecting plate; 41. Support column; 42. Connecting head; 431. First limit pin; 432. Second limit pin; 100. Negative pressure generating area; 200. Negative pressure cavity; 300. Material receiving plate; 400. Adhesive tape or welding tape. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. In the drawings, the thickness of regions and layers are exaggerated for clarity. The same reference numerals in the drawings represent the same or similar structures, and thus their detailed description will be omitted.

[0026] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be used. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present invention.

[0027] The following example describes the vacuum generator and the transport mechanism of the utility model. This example is only a part of the embodiments of the utility model, but the protection scope of the utility model is not limited to this. All other embodiments obtained by ordinary technicians in this field without creative work should be included in the protection scope of the utility model.

[0028] Please refer to Figures 1 to 7 According to an embodiment of the present utility model, a vacuum generator is provided, comprising: Figure 2 An air inlet flat nozzle 11 and an air outlet flat nozzle 12 are arranged (from right to left in the orientation shown), the air inlet flat nozzle 11 has an air inlet flat port 111 with a flow area gradually shrinking along the first direction, and the air outlet flat nozzle 12 has an air outlet flat port 121 with a flow area gradually expanding along the first direction, the air outlet of the air inlet flat port 111 is opposite to the air inlet of the air outlet flat port 121 and is arranged at intervals to form a negative pressure generating area 100 between the air outlet end face of the air inlet flat port 111 and the air inlet end face of the air outlet flat port 121. It can be understood that the flow cross-sections of the aforementioned air inlet flat nozzle 11 and the air outlet flat nozzle 12 are both rectangular, and the length and width of the rectangle are reasonably selected according to the corresponding application conditions. Of course, when selecting the length and width of the rectangle, the negative pressure effect formed by the vacuum generator in the negative pressure generating area 100 should also be taken into account, and the specific size of the aforementioned rectangle can be reasonably designed in combination with experiments.

[0029] In this technical solution, compared with the vacuum generator with a circular suction port in the prior art, since the air inlet flat nozzle 11 and the air outlet flat nozzle 12 are both flat structures, the negative pressure generating area 100 formed can be a rectangular area, so that only one vacuum generator of the utility model can be used to achieve a longer suction of a transport object with a certain length (such as tape and / or welding tape), and there is no need to configure multiple vacuum generators in the prior art to achieve multi-point suction of a longer transport object. The structural design is simple and the manufacturing cost of the mechanism is low.

[0030] In a preferred embodiment, the vacuum generator further includes a flat nozzle mounting seat 13, the flat nozzle mounting seat 13 forms a flat nozzle mounting hole (not marked in the figure) penetrating the first side and the second side thereof along the first direction, the air inlet flat nozzle 11 is assembled on the upstream side of the flat nozzle mounting hole, the air outlet flat nozzle 12 is assembled on the downstream side of the flat nozzle mounting hole, the flat nozzle mounting seat 13 further includes a third side between the first side and the second side, the third side is formed with a negative pressure port 132 connected to the flat nozzle mounting hole, the position of the negative pressure port 132 corresponds to the position of the negative pressure generating area 100. In this technical solution, the flat nozzle mounting seat 13 serves as a mounting carrier for the air inlet flat nozzle 11 and the air outlet flat nozzle 12, and can lock the relative positional relationship between the two. At the same time, a corresponding fixed connection structure is also formed on the flat nozzle mounting seat 13, such as a threaded connection structure or a snap connection structure, so that the vacuum generator can be easily assembled. In some embodiments, the air inlet flat nozzle 11 is entirely inserted into the flat nozzle mounting hole, and the air inlet portion of the air outlet flat nozzle 12 is inserted into the flat nozzle mounting hole.

[0031] In order to ensure the sealing of the mating connection position, a first sealing ring 141 is arranged around the negative pressure port 132, and a second sealing ring 142 is arranged around the air inlet of the air inlet flat nozzle 11. The first sealing ring 141 and the second sealing ring 142 can specifically be rubber gaskets.

[0032] According to the embodiments of the present invention, see Figure 3 As shown, a transport mechanism is also provided, comprising a vacuum generator 1, and the vacuum generator 1 is the vacuum generator mentioned above.

[0033] Specifically, the conveying mechanism also includes an assembly plate 2 and a feeding plate 3. The bottom side end face of the feeding plate 3 is provided with a plurality of adsorption air nozzles 31 arranged in a horizontal and vertical array. The assembly plate 2 and the feeding plate 3 are stacked up and down and define a negative pressure chamber 200 therebetween. An assembly groove (not marked in the figure) for assembling the vacuum generator 1 is formed on the end face of the assembly plate 2 facing away from the feeding plate 3. A negative pressure hole 21 is formed on the bottom wall of the assembly groove. The position of the negative pressure generating area 100 of the vacuum generator 1 is adapted to the position of the negative pressure hole 21. In this way, the negative pressure generating area 100 formed by the vacuum generator 1 is finally connected to the negative pressure chamber 200, and then the adsorption air nozzles 31 are used to realize reliable adsorption and conveying of the conveying objects on its adsorption surface, such as tapes and / or welding tapes, and even composite parts formed by tapes and welding tapes.

[0034] In this technical solution, by providing an assembly groove on one side end face of the assembly plate 2, the vacuum generator 1 can be reliably installed, and due to the groove structure, the overall structural design is relatively compact.

[0035] See Figure 4 As shown, a plurality of silencer grilles 22 are provided on the bottom wall of the assembly groove, and a plurality of groups of the silencer grilles 22 are provided in the air outlet area of ​​the air outlet flat nozzle 12. The silencer grilles 22 are staggered with each other to form a deflection and noise reduction for the air outlet airflow of the air outlet flat nozzle 12, thereby reducing the exhaust noise of the conveying mechanism during operation.

[0036] like Figure 2 As shown, in a specific embodiment, two assembly grooves are provided on the end surface of the assembly plate 2 facing away from the material-collecting plate 3, and one of the aforementioned vacuum generators 1 is respectively arranged in each assembly groove. At the same time, a corresponding structure of a set of the aforementioned sound-absorbing grille 22 is respectively configured, so that the adsorption capacity of the conveying mechanism can be improved.

[0037] See Figure 6 As shown, an air inlet cavity 24 is also formed in the assembly plate 2, and the outlet of the air inlet cavity 24 is connected to the air inlet of the air inlet flat nozzle 11, and the inlet of the air inlet cavity 24 is connected to the air inlet nozzle 25. The specific shape of the air inlet nozzle 25 is, for example, a traditional circle, so as to form a pipeline connection with the outlet pipe of the pressure air flow source (such as a compressor), and the air inlet cavity 24 can be designed to match the flat nozzle length of the air inlet flat nozzle 11 of the vacuum generator 1, and there is no need to separately configure an adapter for converting from a circle to a square, thereby reducing the design cost. In some embodiments, an air outlet grille 23 is assembled on the area corresponding to the position of the assembly groove and the muffler grille 22. It can be understood that the air outlet grille 23 is provided with a plurality of air outlets, which can further reduce the exhaust noise of the vacuum generator 1.

[0038] Continue to see Figure 3 As shown, in some embodiments, a thin sheet connecting plate 4 is further assembled on the side of the assembly plate 2 away from the material receiving plate 3, and the four corner areas of the thin sheet connecting plate 4 are fixedly connected to the assembly plate 2 through support columns 41, and a connecting head 42 is provided in the central area of ​​the thin sheet connecting plate 4, and the connecting head 42 can be fixedly connected with the thin sheet connecting plate 4 by a threaded connection. The specific thickness of the thin sheet connecting plate 4 can be reasonably selected according to its material and load, so as to meet the deformation amount of the thin sheet connecting plate 4 to prevent excessive rigid collision between the material receiving plate 3 and the material receiving plate 300 and the smooth movement of the conveying mechanism by the robot arm, which can be clarified through experiments.

[0039] In the process of taking the corresponding tape (adhesive tape and / or welding tape) from the receiving plate, when the adsorption surface of the receiving plate 3 contacts the bearing surface of the receiving plate 300, the thin connecting plate 4 can adaptively adapt to the bearing surface to deform to a corresponding degree (its own elastic deformation), thereby avoiding collision and collapse caused by the conflict between the upper and lower rigid plates, and facilitating the reliable and stable adsorption of the adsorption object by the receiving plate 3.

[0040] In some embodiments, a first limiting pin 431 and a second limiting pin 432 are further provided between the connector 42 and the assembly plate 2 to limit the maximum deformation of the thin-sheet connecting plate 4 and prevent the thin-sheet connecting plate 4 from being damaged due to excessive distortion. Figure 6 As shown, the first end (bottom end) of the first limit pin 431 is fixedly connected to the assembly plate 2 (for example, threaded connection), and the second end (top end) of the first limit pin 431 passes through the connecting head 42 and is located on the side of the connecting head 42 away from the assembly plate 2 (that is, the top side) to form a limit for the deformation of the thin-film connecting plate 4 away from the assembly plate 2. In a specific embodiment, the second end of the first limit pin 431 forms an outer flange, the first end (bottom end) of the second limit pin 432 is fixedly connected to the assembly plate 2, and the second end (top end) of the second limit pin 432 is located on the side of the connecting head 42 close to the assembly plate 2 to form a limit for the deformation of the thin-film connecting plate 4 close to the assembly plate 2.

[0041] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vacuum generator, characterized in that: The invention comprises an air inlet flat nozzle (11) and an air outlet flat nozzle (12) arranged along a first direction, the air inlet flat nozzle (11) having an air inlet flat opening (111) with a flow area gradually contracting along the first direction, the air outlet flat nozzle (12) having an air outlet flat opening (121) with a flow area gradually expanding along the first direction, the air outlet of the air inlet flat opening (111) and the air inlet of the air outlet flat opening (121) being opposite to each other and arranged at intervals so as to form a negative pressure generating area (100) between the air outlet end face of the air inlet flat opening (111) and the air inlet end face of the air outlet flat opening (121).

2. The vacuum generator according to claim 1, characterized in that: It also includes a flat mouth mounting seat (13), the flat mouth mounting seat (13) forms a flat mouth mounting hole that passes through its first side and second side along the first direction, the air inlet flat mouth (11) is assembled on the upstream side of the flat mouth mounting hole, and the air outlet flat mouth (12) is assembled on the downstream side of the flat mouth mounting hole, and the flat mouth mounting seat (13) also includes a third side between the first side and the second side, and a negative pressure port (132) connected to the flat mouth mounting hole is formed on the third side, and the position of the negative pressure port (132) corresponds to the position of the negative pressure generating area (100).

3. The vacuum generator according to claim 2, characterized in that: The air inlet flat nozzle (11) is inserted in its entirety into the flat nozzle mounting hole, and the air inlet portion of the air outlet flat nozzle (12) is inserted into the flat nozzle mounting hole; and / or a fixed connection structure is formed on the flat nozzle mounting seat (13).

4. The vacuum generator according to claim 2, characterized in that: A first sealing ring (141) is arranged around the negative pressure port (132), and a second sealing ring (142) is arranged around the air inlet of the air inlet flat nozzle (11).

5. A transport mechanism, comprising a vacuum generator (1), characterized in that: The vacuum generator (1) is the vacuum generator according to any one of claims 1 to 4.

6. The transport mechanism according to claim 5, characterized in that: It also includes an assembly plate (2) and a feeding plate (3), wherein the assembly plate (2) and the feeding plate (3) are stacked up and down and define a negative pressure chamber (200) therebetween; an assembly groove for assembling the vacuum generator (1) is formed on the end surface of the assembly plate (2) facing away from the feeding plate (3); a negative pressure hole (21) is formed on the bottom wall of the assembly groove; and the position of the negative pressure generating area (100) of the vacuum generator (1) is adapted to the position of the negative pressure hole (21).

7. The transport mechanism according to claim 6, characterized in that: A plurality of sound-absorbing grilles (22) are also provided on the bottom wall of the assembly groove, and a plurality of groups of the sound-absorbing grilles (22) are arranged in the air outlet area of ​​the air outlet flat nozzle (12); and / or, two of the assembly grooves are provided on the end surface of the assembly plate (2) on the side facing away from the material-collecting plate (3); and / or, an air intake cavity (24) is also formed in the assembly plate (2), and the outlet of the air intake cavity (24) is connected to the air inlet of the air intake flat nozzle (11), and the inlet of the air intake cavity (24) is connected to the air intake nozzle (25).

8. The transport mechanism according to claim 7, characterized in that: An air outlet grille (23) is assembled on the area where the assembly groove corresponds to the position of the sound-absorbing grille (22).

9. The transport mechanism according to claim 6, characterized in that: A thin sheet connecting plate (4) is also assembled on the side of the assembly plate (2) facing away from the material taking plate (3); the four corner areas of the thin sheet connecting plate (4) are fixedly connected to the assembly plate (2) via support columns (41); and a connecting head (42) is provided in the central area of ​​the thin sheet connecting plate (4).

10. The transport mechanism according to claim 9, characterized in that: A first limiting pin (431) and a second limiting pin (432) are also provided between the connecting head (42) and the assembly plate (2) to limit the maximum deformation of the thin-sheet connecting plate (4).

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