Vacuum suction components and sorting machines

Abstract

The present invention discloses a vacuum suction assembly and a sorting machine, wherein the vacuum suction assembly includes a rotating disk and a vent shaft, the vent shaft is arranged at one axial end of the rotating disk and is in clearance with the rotating disk; N first channels are provided in the rotating disk; N strip grooves are provided at one end of the vent shaft facing the rotating disk, and N second channels are provided on the vent shaft, the inlet end of each second channel extends to the bottom of each strip groove, and the outlet end of each second channel is used to communicate with a vacuum pump. The vacuum suction assembly proposed by the present invention has a simple structure. When the external driving member drives the rotating disk to rotate, the rotating disk will not contact the vent shaft, thereby reducing the wear of the rotating disk and increasing its service life. In addition, compared with the installation of an air ring, the assembly of the vacuum suction assembly is simpler.

Description

Technical Field

[0001] The present invention relates to the technical field of sorting machines, in particular to a vacuum material suction component and a sorting machine. Background Art

[0002] In the prior art, in order to improve the efficiency of picking up wafers, a plurality of spaced vacuum suction nozzles are generally installed in a circumferential array on the outer wall of the turntable for picking up wafers. A vacuum channel connected to each vacuum suction nozzle is opened inside the turntable, and then the vacuum channel is evacuated through an air slip ring. In this solution, when the vacuum channel is evacuated through the air slip ring, the structure is complex and the overall installation is difficult. Alternatively, in order to ensure the vacuum needle degree, the lower surface of the turntable is directly in contact with the vacuum device. In this way, when the motor drives the turntable to rotate and absorb the material, the friction between the turntable and the vacuum device is too large, causing the turntable to be easily damaged and having a short service life. Summary of the Invention

[0003] The main purpose of this invention is to propose a vacuum suction assembly and sorting machine, aiming to solve the problem that the turntable structure is complex and easy to damage in the prior art.

[0004] To achieve the above-mentioned purpose, the vacuum material suction assembly proposed by the present invention includes:

[0005] rotating disk,

[0006] A ventilation shaft is provided at one axial end of the rotating disk and is in clearance fit with the rotating disk;

[0007] N first channels are provided in the rotating disk, the outlet ends of the first channels are provided at one end of the rotating disk extending toward the ventilation shaft, and the inlet ends of the first channels are used to communicate with the vacuum nozzle;

[0008] N strip grooves are provided on one end of the ventilation shaft facing the rotating disk, and the N strip grooves are arranged along the motion trajectory of the outlet end of the first channel, and each strip groove is provided facing the outlet end of each first channel;

[0009] The ventilation shaft is provided with N second channels, the inlet end of each second channel extends to the bottom of each strip-shaped groove, and the outlet end of each second channel is used to communicate with the vacuum device;

[0010] The minimum distance between two adjacent strip-shaped grooves is smaller than the inner diameter of the first channel, and N is greater than or equal to 2.

[0011] Optionally, the gap between the ventilation shaft and the rotating disk is defined as a first gap, and the first gap is greater than 0 mm and not greater than 0.1 mm.

[0012] Optionally, the second channel is a straight channel.

[0013] Optionally, N is equal to 8, and the outlet ends of the 8 first channels are arranged in a circumferential array along the rotating disk.

[0014] Optionally, the cross section of the strip-shaped groove is elliptical.

[0015] Optionally, the inlet ends of the plurality of first channels are arranged on the circumferential side of the rotating disk, and each first channel is used to communicate with a vacuum nozzle; the inlet ends of the plurality of first channels are arranged in a circumferential array along the rotating axis.

[0016] Optionally, the first channel includes a first section and a second section connected to each other, and an end of the first section away from the second section is extended along the radial direction of the rotating disk to form an inlet end of the first channel;

[0017] One end of the second section away from the first section is extended along the axial direction of the rotating disk to form an outlet end of the first channel.

[0018] Optionally, the rotating disk includes a first rotating disk and a second rotating disk, the first rotating disk faces the ventilation shaft and is in clearance fit with the ventilation shaft, and the first channel is provided on the first rotating disk;

[0019] The second rotating disk is used to connect with the driving member, the first rotating disk is connected to the second rotating disk and can rotate along with the second rotating disk, and the second rotating disk is provided with a plurality of third channels corresponding to the second section of each first channel.

[0020] Optionally, the first rotating movable disk includes a cylindrical section and a connecting section, and the second rotating movable disk includes an annular plate, the annular plate is sleeved on the outer circumference of the cylindrical section, and the end of the cylindrical section facing away from the ventilation shaft is circumferentially protruded to form the connecting section, and the connecting section is mounted on the upper surface of the annular plate and fixed to the second rotating movable disk by fasteners.

[0021] The present invention also provides a sorting machine, comprising any of the above-mentioned film expanding mechanisms.

[0022] The present invention's technical solution creates a clearance between the rotating disk and the ventilation shaft. This creates a gap between them. When the external driver rotates the rotating disk, the rotating disk does not contact the ventilation shaft, eliminating rigid friction between them. This reduces wear on the rotating disk and increases its service life. Furthermore, compared to installing an air ring, this structure is much simpler to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 An exploded view of an embodiment of a vacuum suction assembly of the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 3 This is a schematic structural diagram of an embodiment of a vacuum suction assembly of the present invention;

[0027] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0028] Figure 5 for Figure 3 A top view of

[0029] Figure 6 for Figure 3 sectional view of .

[0030] Description of Figure Numbers:

[0031]

[0032] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention provides a vacuum suction component 100 for use in a sorting machine, which is used to rotate and gradually suck wafers, thereby improving the working efficiency of the sorting machine.

[0037] In one embodiment, if Figure 1 -to Figure 6 As shown, the vacuum suction assembly 100 includes a rotating disk 10 and a ventilation shaft 20. The ventilation shaft 20 is arranged at one axial end of the rotating disk 10 and is in clearance with the rotating disk 10. N first channels 11 are provided in the rotating disk 10. The outlet end 11b of the first channel is provided at one end extending from the rotating disk 10 toward the ventilation shaft 20. The inlet end 11a of the first channel is used to communicate with the vacuum suction nozzle. N strip grooves 22 are provided at one end of the ventilation shaft 20 facing the rotating disk 10. , N strip grooves 22 are arranged along the movement trajectory of the outlet end 11b of the first channel, and each strip groove 22 is arranged opposite to the outlet end 11b of each first channel; the ventilation shaft 20 is provided with N second channels 21, and the inlet end 21a of each second channel extends to the bottom of each strip groove 22, and the outlet end 21b of each second channel is used to communicate with the vacuum device; the minimum distance between two adjacent strip grooves 22 is less than the inner diameter of the first channel 11, and N is greater than or equal to 2.

[0038] Wherein N can be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or more, and its specific number is not limited here. It can be selected according to design requirements and the volume size between the rotating disk 10 and the ventilation shaft 20, and is not limited here.

[0039] Alternatively, as Figure 3-6As shown, the rotating disk 10 and the ventilation shaft 20 are placed up and down as an example for explanation. The rotating disk 10 is used to install and fix multiple vacuum suction nozzles, and each vacuum suction nozzle is connected to a first channel 11. The ventilation shaft 20 can be cylindrical, rectangular or other shapes, which are not limited here. For ease of processing, in this embodiment, the ventilation shaft 20 is cylindrical, which serves as a vacuum middle piece, and has a second channel 21 corresponding to each first channel 11. The ventilation shaft 20 is directly installed and fixed on the vacuum component device, and each second channel 21 can also be connected to the vacuum device through a vacuum pipe so that the vacuum device can vacuum each second channel 21. The specific installation method of the ventilation shaft 20 is not limited here.

[0040] The operating principle of the vacuum suction assembly 100 is as follows: the vacuuming device is activated to vacuum each second channel 21 of the vent shaft 20. At this time, due to the clearance fit between the rotating disk 10 and the vent shaft 20, the gap between them is relatively small, and the area of ​​gas leakage during the vacuuming process is relatively small. While ensuring a sufficient flow rate of the vacuuming element, the gas discharge within the corresponding first channel 11 will not be affected. In other words, the gas inside the vacuum nozzle is drawn out by the vacuuming device through the first channel inlet 11a, the first channel 11, the first channel outlet 11b, the strip groove 22, and the second channel 21, maintaining a negative pressure inside the vacuum nozzle to absorb the wafer.

[0041] Furthermore, it is defined that the vacuum suction nozzle installed on the rotating disk 10 moves to the material picking station. When picking up the material, the inlet end 11a of each first channel overlaps with the central axis of the corresponding strip groove 22. The position where the vacuum suction nozzle picks up the material is the first station. After picking up the material, the external driving member such as an electric motor drives the rotating disk 10 to rotate to drive the vacuum suction nozzle to move to the next station (the second station). At this time, since the minimum spacing between the two adjacent strip grooves 22 is smaller than the inner diameter of the first channel 11, when the rotating disk 10 rotates from the first station to the second station, the portion of the outlet end 11b of the first channel connected to the vacuum suction nozzle is placed directly above the adjacent strip groove 22. At this time, the two adjacent channels simultaneously vacuum the vacuum suction nozzle. In this way, when the external driving member drives the rotating disk 10 to rotate relative to the ventilation shaft 20, it can be ensured that the vacuum suction nozzle is always kept in a negative pressure state to prevent the material (such as a wafer) it absorbs from falling off. In this way, the vacuum suction nozzle installed on the rotating disk 10 can be kept in a negative pressure state during rotation without using an air slip ring, and the structure of the entire vacuum suction assembly 100 is simpler and more reliable.

[0042] The present invention's technical solution creates a clearance between the rotating disk 10 and the ventilation shaft 20. This creates a certain gap between them. When the external driver drives the rotating disk 10 to rotate, the rotating disk 10 does not contact the ventilation shaft 20, eliminating rigid friction between them. This reduces wear on the rotating disk 10 and increases its service life. Furthermore, compared to installing an air ring, this structure is simpler.

[0043] In one embodiment, if Figure 3 and Figure 4 As shown, the gap between the ventilation shaft 20 and the rotating disk 10 is defined as a first gap D, and the first gap D is greater than 0mm and not greater than 0.1mm. Optionally, the surfaces facing the rotating disk 10 and the ventilation shaft 20 are designed to be parallel, so that the consistency of the vacuum degree in each first channel 11 is guaranteed to be higher. The first gap D can be 0.0001mm, 0.001mm, 0.002mm, 0.01mm, 0.1mm, or any value therebetween, which is not limited here. After repeated verification by the inventor, when the gap between the rotating disk 10 and the ventilation shaft 20 is within this range, the rotating disk 10 will not generate rigid friction with the ventilation shaft 20 when rotating, causing damage to the rotating disk 10. At the same time, the vacuum leakage area caused by the first gap D is small, and will not affect the vacuum degree in each first channel 11, that is, the vacuum degree in the vacuum nozzle installed on the turntable and corresponding to the inlet end 11a of the first channel can be guaranteed.

[0044] In one embodiment, the second channel 21 is a straight channel. Compared to curved channels or other irregularly shaped channels, the second channel 21 is easier to manufacture, and thus the vent shaft 20 is easier to manufacture. The second channel 21 vertically passes through the upper and lower ends of the vent shaft 20, simplifying the manufacture of the vent shaft 20 and facilitating its connection to a vacuum pump.

[0045] In one embodiment, N is equal to 8, and the outlet ends 11 b of the eight first channels are arranged in an array along the circumference of the rotating disk 10 .

[0046] In this embodiment, if Figure 1 and Figure 2 As shown, eight outlet ports 11b of the first channel are arranged in an array along the circumference of the rotating disk 10. Correspondingly, eight strip grooves 22 are arranged in an array along the circumference of the ventilation axis 20. The center point of the strip grooves 22 is the center point of the rotating disk 10 along its axial projection, and the length direction of the strip grooves 22 is the axial direction of the ventilation axis 20. In this way, when the rotating disk 10 rotates 45°, a workstation can be switched. The angle switching between each workstation is consistent, which facilitates control and makes it easier for the vacuum tube installed on the rotating disk 10 to pick up and place materials.

[0047] In one embodiment, the cross section of the strip-shaped groove 22 is elliptical.

[0048] It is understandable that in order to facilitate processing and achieve a relatively good airflow conduction effect when the occupied volume is small, the first channel 11 and the second channel 21 are both circular holes with circular cross-sections. Preferably, the inner diameters of the first channel 11 and the second channel 21 are equal, so that the vacuum flow rate of each second channel 21 is consistent with the vacuum device, which is easy to control. Since the cross-section of the strip grooves 22 is elliptical, when the outlet end 11b of one of the first channels rotates to a position between the two strip grooves 22, the overlapping area of ​​the outlet end 11b of the first channel and the two strip grooves 22 along the axial direction of the rotating disk 10 is the largest. When the vacuum flow rate of the second channel 21 is constant, the vacuum effect on the first channel 11 is the best. This further ensures the suction effect of the vacuum nozzle connected to the first channel 11.

[0049] Of course, in other embodiments, the strip groove 22 may also be in the form of a square or other shapes, which is not limited here.

[0050] In one embodiment, the inlet ends 11 a of the plurality of first channels are arranged on the circumferential side of the rotating disk 10 for communicating with the vacuum nozzles, and the inlet ends 11 a of the plurality of first channels are arranged in an array along the circumference of the rotating disk 10 .

[0051] It should be noted that the vacuum suction nozzle is generally used to be installed on the peripheral side of the rotating disk 10. Therefore, in order to facilitate the installation of the vacuum suction nozzle on the rotating disk 10, the inlet end 11a of the first channel extends to the peripheral side of the rotating disk 10. In this way, after the vacuum suction nozzle is installed on the peripheral side of the rotating disk 10, it is directly connected to the inlet end 11a of the first channel, thereby eliminating the need for an additional channel connecting pipe to connect the first channel 11 and the vacuum suction nozzle, reducing the difficulty of assembly.

[0052] Furthermore, the inlet ends 11a of the multiple first channels are arranged in an array on the circumferential side of the rotating disk 10, and the outlet ends 11b of the multiple first channels are arranged in a circumferential array centered on the rotating axis on the lower surface of the rotating disk 10. This design ensures that when the turntable rotates a certain angle, each first channel 11 is in a negative pressure state.

[0053] In one embodiment, the first channel 11 includes a first segment and a second segment 112 that are interconnected. The end of the first segment 111, distal to the second segment 112, extends radially (horizontally) from the rotating disk 10, forming the first channel's inlet end 11a. The end of the second segment 112, distal to the first segment 111, extends axially (vertically) from the rotating disk 10, forming the first channel's outlet end 11b. This design simplifies and facilitates the processing of the first channel 11, making the production and processing of the rotating disk 10 simpler and more reliable.

[0054] In one embodiment, the rotating disk 10 includes a first rotating disk 12 and a second rotating disk 13, the first rotating disk 12 is opposite to the ventilation shaft 20 and is loosely fitted with the ventilation shaft 20, and the first channel 11 is arranged on the first rotating disk 12; the second rotating disk 13 is used to connect with the driving member, the first rotating disk 12 is connected to the second rotating disk 13 and can rotate with the second rotating disk 13, and the second rotating disk 13 is provided with a plurality of third channels 131 corresponding to the second section 112 of each first channel 11.

[0055] It is understandable that the larger the radial dimension of the rotating disk 10, the more vacuum nozzles can be installed when the distance between two adjacent nozzles installed on the rotating disk 10 is constant. When the radial dimension of the rotating disk 10 is large, since the first channel 11 is L-shaped as a whole, the processing difficulty of the first section 111 of the first channel 11 is large. Based on this, in this embodiment, the rotating disk 10 is divided into two interconnected components, a first rotating disk 12 and a second rotating disk 13. The first rotating disk 12 is arranged directly above the ventilation shaft 20, and its size design can be smaller to facilitate the opening of the first channel 11. At the same time, the multiple third channels 131 opened in the second rotating disk 13 are equivalent to the extension of the first section 111 of the first channel 11 along its length direction, thereby reducing the processing difficulty of the entire rotating disk 10.

[0056] In one embodiment, if Figure 1 、 Figure 2 as well as Figure 6 As shown, the first rotating movable disk 12 includes a cylindrical section 121 and a connecting section 122, and the second rotating movable disk 13 includes an annular plate 13a, which is sleeved on the outer circumference of the cylindrical section 121, and the end of the cylindrical section 121 that is away from the ventilation shaft 20 is circumferentially protruded to form the connecting section 122, and the connecting section 122 is mounted on the upper surface of the annular plate 13a and is fixed to the second rotating movable disk 13 by fasteners.

[0057] Optionally, the diameter of the cylindrical segment 121 matches the inner diameter of the annular plate 13a. During assembly, the cylindrical segment 121 is inserted into the inner hole of the annular plate 13a, with the outer circumferential wall of the cylindrical segment 121 abutting against the inner circumferential wall of the annular plate 13a. The connecting segment 122 is arranged in a circular plate shape on the upper surface of the annular plate 13a. The relative positions of the cylindrical segment 121 and the annular plate 13a are adjusted by rotation so that the third channel 131 on the annular plate 13a is connected and coaxial with the first segment 111 of the first channel 11 on the cylindrical segment 121. At this point, the connecting segment 122 is screwed to the annular plate 13a, completing the assembly of the first rotating disk 12. One end of the third through hole extends to the outer circumference of the annular plate 13a for communication with a vacuum nozzle mounted on the outer circumference of the annular plate 13a. The annular plate 13a is connected to a driving member, such as the annular plate 13a is fixed on an electric motor, and the electric motor drives the annular plate 13a to rotate, so that the vacuum suction nozzle installed on the annular plate 13a can be switched between different stations to realize multi-station material removal.

[0058] The present invention also proposes a sorting machine, which includes a film expanding mechanism. The specific structure of the film expanding mechanism refers to the above-mentioned embodiment. Since this sorting machine adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vacuum suction component for a sorting machine, characterized in that: include: rotating disk; A ventilation shaft is provided at one axial end of the rotating disk and is in clearance fit with the rotating disk; N first channels are provided in the rotating disk, the outlet ends of the first channels are provided at one end of the rotating disk extending toward the ventilation shaft, and the inlet ends of the first channels are used to communicate with the vacuum nozzle; N strip grooves are provided on one end of the ventilation shaft facing the rotating disk, and the N strip grooves are arranged along the motion trajectory of the outlet end of the first channel, and each strip groove is provided facing the outlet end of each first channel; The ventilation shaft is provided with N second channels, the inlet end of each second channel extends to the bottom of each strip-shaped groove, and the outlet end of each second channel is used to communicate with the vacuum device; The minimum distance between two adjacent strip-shaped grooves is smaller than the inner diameter of the first channel, and N is greater than or equal to 2; The gap between the ventilation shaft and the rotating disk is defined as a first gap, and the first gap is greater than 0 mm and not greater than 0.1 mm; The second channel is a straight channel.

2. The vacuum suction assembly according to claim 1, wherein: N is equal to 8, and the outlet ends of the 8 first channels are arranged in a circumferential array along the rotating disk.

3. The vacuum suction assembly according to claim 1, wherein: The cross section of the strip-shaped groove is elliptical.

4. The vacuum suction assembly according to any one of claims 1 to 3, characterized in that: The inlet ends of the plurality of first channels are arranged on the circumferential side of the rotating disk, and each first channel is used to communicate with a vacuum nozzle; the inlet ends of the plurality of first channels are arranged in an array along the circumference of the rotating disk.

5. The vacuum suction assembly according to claim 4, characterized in that: The first channel includes a first section and a second section connected to each other, and one end of the first section away from the second section is extended along the radial direction of the rotating disk to form an inlet end of the first channel; One end of the second section away from the first section is extended along the axial direction of the rotating disk to form an outlet end of the first channel.

6. The vacuum suction assembly according to claim 5, wherein: The rotating disk includes a first rotating disk and a second rotating disk, the first rotating disk is directly opposite to the ventilation shaft and has a clearance fit with the ventilation shaft, and the first channel is provided on the first rotating disk; The second rotating disk is used to connect with the driving member, the first rotating disk is connected to the second rotating disk and can rotate along with the second rotating disk, and the second rotating disk is provided with a plurality of third channels corresponding to the second section of each first channel.

7. The vacuum suction assembly according to claim 6, wherein: The first rotating movable disk includes a cylindrical section and a connecting section, and the second rotating movable disk includes an annular plate. The annular plate is sleeved on the outer circumference of the cylindrical section, and the end of the cylindrical section facing away from the ventilation shaft is circumferentially protruded to form the connecting section. The connecting section is mounted on the upper surface of the annular plate and is fixed to the second rotating movable disk by fasteners.

8. A sorting machine, characterized in that: The invention comprises the vacuum material suction component according to any one of claims 1 to 7.

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