TWM601295U - Leak-stop adsorption device - Google Patents

Abstract

The present model provides a leak-proof adsorption device, which includes a flexible film, an isolation plate, and a base. The film includes a first surface, a second surface opposite to the first surface, and vents penetrating the film. The isolation plate is arranged on the first surface of the film and includes an isolation hole penetrating the isolation plate. The base is arranged on a side of the isolation plate opposite to the film, and includes an air flow passage through the base. The vent holes of the film, the isolation holes of the isolation plate, and the air flow channel of the base communicate with each other. When the air pressure on the first surface is lower than the air pressure on the second surface, the air pressure difference between the first surface and the second surface drives the film to deflect and deform in the normal direction of the first surface, so that part of the film on the isolation hole Touch the base and close the air passage on the base.

Description

Leak-stop adsorption device

The new model relates to an adsorption device, in particular to an adsorption device that can automatically stop leakage.

In the prior art, when a processing machine transfers or processes a harder workpiece such as a circuit board, it needs to form a relatively stable positioning of the workpiece before it can be moved or processed. Therefore, suction devices such as vacuum chucks are often used to suck and fix the workpiece.

In the conventional suction device, there is usually an array of vacuum chuck groups for suction of workpieces. However, when the contour shape of the workpiece does not match the vacuum chuck group, or the surface of the workpiece is not completely flat, it will cause part of the vacuum chuck to fail to fit the workpiece and continue to absorb external air, resulting in air leakage and damage. As a result of the vacuum, the work efficiency of the adsorption device is finally reduced.

In order to solve the above problems, the conventional technology usually increases the flow rate of the fan of the vacuum system of the adsorption device to reduce the influence of air leakage and vacuum breaking of the vacuum suction cup group on the adsorption force of the workpiece. However, this is accompanied by greater energy consumption and uncertainty in the effect of workpiece adsorption. Therefore, it is necessary to develop a new type of adsorption device to solve the above-mentioned problems that may occur in the prior art.

In order to solve the above-mentioned problems of the conventional technology, the purpose of the present invention is to provide an adsorption device that can automatically stop leakage.

In order to achieve the above objective, the present invention provides a leak-proof adsorption device, which includes: a film, which is flexible, and includes a first surface, a second surface opposite to the first surface, and a vent hole penetrating the film ; An isolation plate disposed on the first surface of the film and including an isolation hole penetrating the isolation plate; and a base disposed on the side of the isolation plate opposite to the film, and including penetrating the base One air flow channel. The ventilation hole of the film, the isolation hole of the isolation plate, and the air flow channel of the base communicate with each other. When the air pressure on the first surface is less than the air pressure on the second surface, the air pressure difference between the first surface and the second surface drives the film to be deformed in the normal direction of the first surface, so that The part of the film on the isolation hole contacts the base and closes the air flow channel on the base.

In a preferred embodiment, the leak-proof adsorption device of the present invention further includes: an object holder, which is arranged on the second surface of the film, and includes a nozzle flow channel penetrating the object holder and A nozzle on the nozzle flow path. The suction nozzle flow channel of the object receiving seat and the suction nozzle, the air hole of the film, the isolation hole of the isolation plate, and the air flow channel of the base are connected to each other.

In a preferred embodiment, when the leak-proof adsorption device is in the working state, the air passage has a negative pressure, so that the suction nozzle can adsorb a workpiece. When the workpiece is attached to the suction nozzle, the air pressure on the first surface is equal to the air pressure on the second surface, and the air pressure difference between the first surface and the second surface is 0, the film No deviation and deformation, so that the air flow channel remains unobstructed. When the workpiece is not attached to the suction nozzle, the air pressure on the first surface is less than the air pressure on the second surface, and the air pressure difference between the first surface and the second surface drives the film toward The normal deviation of the first surface deforms, so that the part of the film on the isolation hole contacts the base and closes the air flow passage on the base.

In a preferred embodiment, when the air pressure on the first surface is greater than the air pressure on the second surface, the air pressure difference between the first surface and the second surface drives the film toward the second surface The normal deviation of the two surfaces deforms.

In a preferred embodiment, a second central axis of the isolation hole is coaxial with a third central axis of the air passage and a fourth central axis of the nozzle flow channel, and a first The central axis is not coaxial with the second central axis of the isolation hole, the third central axis of the air flow channel, and the fourth central axis of the nozzle flow channel.

In a preferred embodiment, the cross-sectional area of the vent hole is smaller than the cross-sectional area of the isolation hole, the cross-sectional area of the air flow channel, and the cross-sectional area of the nozzle flow channel.

According to the above, when the leak-proof suction device is in working condition, once the workpiece is not covered and attached to the suction nozzle, the film provided between the base and the object seat will be affected by the first The air pressure difference between the one surface and the second surface drives the deviation and deformation, thereby closing the air flow passage on the base, so as to achieve the automatic leakage prevention effect of the air flow passage.

In order to make the above and other objectives, features, and advantages of the present invention more obvious and understandable, the following will specifically cite the preferred embodiments of the present invention, together with the drawings, and describe in detail as follows.

Please refer to FIG. 1, which is a schematic cross-sectional view of a leak-proof adsorption device 100 provided by the present invention. The leak-proof adsorption device 100 includes a film 110, an isolation plate 120, a base 130, and an object holder 140. 1 is only a schematic diagram of the structure of the leak-proof adsorption device 100 of the present invention, which is not drawn according to the actual size. At the same time, the structure size of the leak-proof adsorption device 100 can also be adjusted according to actual needs, and its relative size is not based on this. limit.

With reference to the schematic top view of the film 110 in FIG. 2, the film 110 includes a first surface 111, a second surface 112 opposite to the first surface 111, and a vent 113 penetrating the film 110. The embodiment of the present invention is illustrated by the arrangement of nine of the ventilation holes 113 in an array, and the number and method of the arrangement are adjusted according to actual needs, and the details are not limited thereto. The film 110 is flexible and can deform or self-reset along the normal direction of the first surface 111 or the second surface 112, and is preferably a soft stretchable film material.

With reference to the top view of the isolation plate 120 of FIG. 3, the isolation plate 120 is disposed on the first surface 111 of the film 110 and includes an isolation hole 121 penetrating the isolation plate 120. The embodiment of the present invention is described with the arrangement of nine of the isolation holes 121 in an array, and the number and method of the isolation holes are adjusted according to actual needs, and the details are not limited thereto.

With reference to the schematic top view of the base 130 in FIG. 4, the base 130 is disposed on a side of the isolation plate 120 opposite to the film 110, and includes an air passage 131 penetrating the base 130. The embodiment of the present invention is described with the arrangement of nine of the air flow channels 131 in an array, and the number and method of the setting are adjusted according to actual needs, and the details are not limited thereto.

With reference to the top schematic view of the object holder 140 in FIG. 5, the object holder 140 is disposed on the second surface 112 of the film 110, and includes a nozzle flow channel 141 passing through the object holder 140 and A suction nozzle 142 on the nozzle flow channel 141. The embodiment of the present invention is illustrated by the array arrangement of nine such suction nozzle runners 141 and suction nozzles 142, and the number and method of the setting are adjusted according to actual needs, and the details are not limited thereto.

Arrangement of the suction nozzle flow channel 141 and the suction nozzle 142, the ventilation hole 113 of the film 110, the isolation hole 121 of the isolation plate 120, and the ventilation channel 131 of the base 130 The numbers correspond to each other, and they are connected end to end, so that the gas between them can communicate with each other.

6, which is a schematic cross-sectional view of AA in FIG. 1, in the top view, the orthographic projection of each isolation hole 121 of the isolation plate 120 covers the orthographic projection of each ventilation hole 113 of the film 110 And the orthographic projection of each air flow channel 131 of the base 130. At the same time, the orthographic projection of each air passage 131 of the base 130 and the orthographic projection of each vent 113 of the film 110 do not overlap with each other.

In the present invention, a second central axis 122 of the isolation hole 121 is coaxial with a third central axis 132 of the air flow channel 131 and a fourth central axis 143 of the nozzle flow channel 141; and the ventilation hole A first central axis 114 of the 113 and the second central axis 122 of the isolation hole 121, the third central axis 132 of the air flow passage 131, and the fourth central axis 143 of the nozzle flow passage 141 are different axis. At the same time, the present invention also sets the cross-sectional area of the vent hole 113 to be smaller than the cross-sectional area of the isolation hole 121, the cross-sectional area of the air flow passage 131, and the cross-sectional area of the nozzle flow passage 141.

The air flow channel 131 is connected to an end of the object receiving seat 140 with a fan capable of creating a negative pressure environment. Therefore, when the leak-proof adsorption device 100 is in the working state, the air flow passage 131 has a negative pressure and will continue to inhale gas. The isolation hole 121, the ventilation hole 113, the suction nozzle flow passage 141, and the suction nozzle 142 communicating with the air flow passage 131 will also have a negative pressure, so that the suction nozzle 142 can absorb a workpiece 200.

Please refer to FIG. 7, which is a schematic diagram of the first working state of the new leak-proof adsorption device. When the workpiece 200 is attached to all the suction nozzles 142 and the air flow passage 131 has a negative pressure, the leak-proof adsorption device 100 continuously sucks the internal gas 300, thereby creating a pressure close to a vacuum, so that the workpiece 200 is adsorbed于all the suction nozzles 142. At this time, the external air 400 does not enter the air flow channel 131, and the air pressure on the first surface 111 will be equal to the air pressure on the second surface 112. Therefore, the air pressure difference between the first surface 111 and the second surface 112 is zero, and the thin film 110 does not deviate and deform, so that the air flow passage remains unobstructed.

Please refer to FIG. 8, which is a schematic diagram of the second working state of the new leak-proof adsorption device. When the workpiece 200 is not attached to all the suction nozzles 142 and the air flow passage 131 has a negative pressure, the leak-proof adsorption device 100 continuously sucks the internal air 300 and the external air 400, and part of the air flow The passage 131 has an air pressure close to a vacuum, and the workpiece 200 can be adsorbed to a part of the suction nozzle 142.

However, part of the air flow channel 131 is not attached to the workpiece 200, so that the internal air 300 communicates with the external air 400. When the external air 400 continues to enter the leak-proof adsorption device 100, because the cross-sectional area of the vent 113 is smaller than the cross-sectional area of the isolation hole 121, the cross-sectional area of the air flow channel 131, and the nozzle flow channel The cross-sectional area of 141, therefore, in a unit time, the gas flow rate of the vent hole 113 is smaller than the gas flow rate of the isolation hole 121, the gas flow rate of the flow channel 131, and the gas flow rate of the nozzle flow channel 141. When the gas flow rate of the ventilation hole 113 is less than the gas flow rate of the ventilation channel 131, the gas pressure of the ventilation channel 131 will be less than the gas pressure of the ventilation hole 113, so that the gas pressure on the first surface 111 is less than The air pressure of the second surface 112. The air pressure difference between the external air 400 and the internal air 300 drives the film 110 to deflect and deform in the normal direction of the first surface 111, so that the flexible film 110 on the isolation hole 120 is affected by the air pressure While contacting the base 130 and sealing the air flow channel 131 on the base 130, the internal air 300 and the external air 400 are not communicated with each other, and the anti-leak adsorption device 100 can no longer inhale the external air 400, In order to achieve the automatic leakage stop effect of the leakage stop adsorption device 100.

In addition, when the air pressure on the first surface 111 is greater than the air pressure on the second surface 112, the air pressure difference between the first surface 111 and the second surface 112 drives the film toward the second surface 112. Deformation toward the offset; and this offset deformation does not affect the normal operation of the leak-proof adsorption device 100.

Due to the flexibility of the film 110, the deviation and deformation response is rapid when encountering the air pressure difference, and the automatic leakage prevention effect of the air flow passage 131 can be quickly achieved; and the film 110 can also quickly restore the original after the air pressure difference is eliminated The flat shape can effectively improve the sensitivity and response speed of automatic leak stop. In addition, the leak-proof adsorption device 100 of the present invention can reduce the risk of air leakage and vacuum breaking, and there is no need to equip the device with a large flow fan, thus reducing energy consumption and improving production efficiency.

The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the present invention. protected range.

100: Stop-leak adsorption device 110: Film 111: first surface 112: second surface 113: Vent hole 114: first central axis 120: isolation board 121: isolation hole 122: second central axis 130: Pedestal 131: Ventilation channel 132: Third central axis 140: Access seat 141: Nozzle runner 142: Nozzle 143: The fourth central axis 200: Workpiece 300: internal gas 400: Outside air

[Figure 1] is a cross-sectional schematic diagram of the new type of leak-proof adsorption device. [Figure 2] is a schematic top view of the film of the new leak-proof adsorption device. [Figure 3] is a schematic top view of the isolating plate of the new leak-proof adsorption device. [Figure 4] is a schematic top view of the base of the new leak-proof adsorption device. [Figure 5] is a schematic top view of the object holder of the new leak-proof adsorption device. [Figure 6] is a schematic diagram of the A-A section in [Figure 1]. [Figure 7] is a schematic diagram of the first working state of the new leak-proof adsorption device. [Figure 8] is a schematic diagram of the second working state of the new leak-proof adsorption device.

100: Stop-leak adsorption device

110: Film

111: first surface

112: second surface

113: Vent hole

120: isolation board

121: isolation hole

130: Pedestal

131: Ventilation channel

140: Access seat

141: Nozzle runner

142: Nozzle

200: Workpiece

300: internal gas

400: Outside air

Claims (8)

A leak-proof adsorption device, comprising: A film having flexibility, and comprising a first surface, a second surface opposite to the first surface, and a vent through the film; An isolation plate disposed on the first surface of the film and including an isolation hole penetrating the isolation plate; and A base, which is arranged on a side of the isolation plate opposite to the film, and includes an air flow passage through the base; Wherein, the vent hole of the film, the isolation hole of the isolation plate, and the air flow channel of the base communicate with each other; and When the air pressure on the first surface is less than the air pressure on the second surface, the air pressure difference between the first surface and the second surface drives the film to be deformed in the normal direction of the first surface, so that The part of the film on the isolation hole contacts the base and closes the air flow channel on the base. For example, the non-leak adsorption device of item 1 in the scope of patent application further includes: An object holder, which is arranged on the second surface of the film, and includes a nozzle flow passage through the object holder and a suction nozzle arranged on the nozzle flow passage, the suction nozzle of the object holder The flow channel and the suction nozzle, the air hole of the film, the isolation hole of the isolation plate, and the air flow channel of the base communicate with each other. For example, the non-leak adsorption device of item 2 of the scope of patent application, wherein, when the non-leak adsorption device is in working condition, the air passage has a negative pressure, so that the suction nozzle can adsorb a workpiece; When the workpiece is attached to the suction nozzle, the air pressure on the first surface is equal to the air pressure on the second surface, and the air pressure difference between the first surface and the second surface is 0, the film Do not deviate and deform, so that the air flow channel remains unobstructed; and When the workpiece is not attached to the suction nozzle, the air pressure on the first surface is less than the air pressure on the second surface, and the air pressure difference between the first surface and the second surface drives the film toward The normal deviation of the first surface deforms, so that the part of the film on the isolation hole contacts the base and closes the air flow passage on the base. For example, the anti-leak adsorption device of item 1 of the scope of patent application, wherein when the air pressure on the first surface is greater than the air pressure on the second surface, the air pressure between the first surface and the second surface The difference drives the film to deflect and deform in the normal direction of the second surface. For example, the anti-leak adsorption device of item 1 of the scope of patent application, wherein a second central axis of the isolation hole is coaxial with a third central axis of the air passage, and a first central axis of the vent hole is coaxial with the isolation The second central axis of the hole and the third central axis of the air passage are not coaxial. For example, the non-leak adsorption device of item 2 of the scope of patent application, wherein a second central axis of the isolation hole is coaxial with a third central axis of the air passage and a fourth central axis of the nozzle flow channel, A first central axis of the vent hole is not coaxial with the second central axis of the isolation hole, the third central axis of the air flow passage, and the fourth central axis of the nozzle flow passage. For example, the anti-leak adsorption device of item 1 of the scope of patent application, wherein the cross-sectional area of the vent hole is smaller than the cross-sectional area of the isolation hole and the cross-sectional area of the air flow passage. For example, the anti-leak adsorption device of the second item of the scope of patent application, wherein the cross-sectional area of the vent hole is smaller than the cross-sectional area of the isolation hole, the cross-sectional area of the air flow channel, and the cross-sectional area of the nozzle flow channel.

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