TWI545072B - Adsorption device and the adsorption of soft objects of the vacuum adsorption equipment - Google Patents

Description

Adsorption device and vacuum adsorption device capable of adsorbing soft objects

The invention relates to a vacuum adsorption device, in particular to a vacuum adsorption device which can be used for adsorbing soft objects.

The technology related to vacuum chucks can be mainly divided into two types, one is a contact vacuum chuck and the other is a non-contact vacuum chuck.

In general, the more common and widely used contact vacuum chuck technology is based on the negative pressure generated by the flow of gas from the inlet to the outlet for direct application to the object to be adsorbed. The purpose of adsorbing objects. Since the negative pressure system is directly applied to the object, when the object is adsorbed on the suction cup, a vacuum-like environment can be formed in the air chamber, so that the object is tightly coupled to the suction cup. Therefore, the contact suction cup can be loaded with a heavy load. Things. However, when the contact vacuum chuck sucks the object, the suction cup will directly contact the surface of the object. If it is applied to a high-precision object, the surface of the object may be scratched, thereby reducing the yield of the production. Therefore, the contact suction cup is not Suitable for use in high precision processes.

In order to solve the above problems, the current transfer operation for high-precision objects is usually a non-contact suction cup technology, the principle of which is through the high-speed airflow released from the surface of the object through the suction cup, through the principle of Bernoulli phenomenon, at high speed A vacuum-like region of low pressure is created in the gas stream to adsorb the web. Wherein, the positive force generated by the absorbing material sheet is offset by the weight of the object and the opposing force of the airflow applied to the object, so that the object and the suction cup maintain a fixed distance to achieve the non-contact purpose. For example, the Patent No. I331981 of the Republic of China discloses a non-contact conveying device comprising a casing, an inner member is disposed inside the casing, and air is introduced into the annular passage via the inner member, and the annular passage is vortexed. The vortex is conveyed to an annular groove and blown outward to form a vacuum region for adsorbing the object to be tested, thereby adsorbing an object to be tested in an adjacent but non-contact manner, and a non-contact type is disclosed in the Patent No. M344217 of the Republic of China. Vacuum suction cup, providing a no The suction cup body of the vent hole design uses gas to be ejected from each of the adsorption bottom surface and the object to form a gas film, and the object is in a floating state to achieve a non-contact adsorption effect, which are all applied by the same principle.

However, the aforementioned contact type suction cups and non-contact type suction cups still have many defects in use. For example, when a contact type suction cup is used for adsorbing an object, the suction cup must be attached to the surface of the object to achieve an airtight effect. If it is used for adsorbing the porous material, the position of the suction cup must be adjusted to achieve adsorption. The purpose is that even if a plurality of pores or grooves are densely packed on the web, the effect of adsorption cannot be achieved. The non-contact suction cup of the view can achieve the purpose of adsorbing the porous material. However, when the material and the object are fixed, the material and the object float in the air and cannot be stably held, even if it is processed today. The method uses the frame to limit the side edges of the web and the object. However, the frame still needs to be adjusted with the size of the material, which is inconvenient in operation, and when applied to the turning machine, it may also be caused by the acceleration generated when the surface is turned over. The piece or object collides with the suction cup, so that the piece or object is damaged. Such a loss will make the non-contact suction cup too restrictive in use.

In order to avoid the problem of collision, the patent No. I338084 of the Republic of China discloses a non-collision non-contact vacuum chuck which is driven by a repulsion generating portion to generate a forward airflow against the web during adsorption to avoid the web. Collision sucker. In addition, in the Patent No. 201240009 of the Republic of China, a non-contact vacuum chuck is disclosed, which has at least one crash pad on the adsorption surface, but the non-contact vacuum chuck listed above still has to use the frame to limit its position. It can achieve the purpose of transferring the material, and in the state of use, the material may still cause collision with the suction pad on the suction cup or the suction pad due to the oscillation generated during the transfer or turning, and the surface of the material is caused. Repeated collision of the crash pad caused damage to the surface of the web. Furthermore, all of the vacuum adsorption devices described above may cause the soft plate to sag due to uneven force, so that the soft plate may be warped or wrinkled during transfer. The situation may cause inconvenience in detection and even damage to the soft board during transfer.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vacuum adsorption apparatus for adsorbing a porous article and avoiding the article from sagging downward when adsorbed.

In order to solve the above problems, the present invention provides a vacuum suction capable of adsorbing soft objects. The attached device includes a moving device, a flat suction plate, and a suction device. The mobile device includes at least one connecting arm, and a driving device coupled to the connecting arm to operate the connecting arm to move. The flat suction plate is connected to the connecting arm, and the flat suction plate comprises an adsorption surface for the soft object to be placed, and a plurality of vacuum air holes disposed on the adsorption surface and providing a negative pressure to adsorb the soft object. The adsorption device comprises a suction cup body mounted on the flat suction plate, a suction bottom surface disposed on the bottom side of the suction cup body and corresponding to the adsorption surface, and a friction piece disposed on the adsorption bottom surface. The suction cup body is provided with an air inlet, the adsorption bottom surface includes an outer ring portion and an inner ring portion, and the outer ring portion and the inner ring portion comprise an aperture formed by the adsorption bottom surface toward the air inlet channel. The tapered annular flow path forms a vacuum region when the gas is blown through the inlet passage to the annular flow passage, and the friction piece is disposed on the inner ring portion. When the soft object is adsorbed by the vacuum region, it depends on the friction piece and is attached to the adsorption surface on the circumferential side of the adsorption bottom surface.

Further, the suction force of the vacuum region and the repulsive force of the gas are balanced to form an equilibrium gap between the object and the bottom side of the outer ring portion, and the distance between the bottom side of the friction piece and the bottom side of the outer ring portion is equal to Or slightly larger than the balance gap.

Further, the mobile device can be a transfer device, a flip device, or a rotating device.

Further, the friction piece is selected from the group consisting of Polyurethane and Chloroprene Rubber.

Further, the inner ring portion can be adjusted up and down with respect to the outer ring portion.

Another object of the present invention is to provide an adsorption device for adsorbing at least one object, the adsorption device comprising a suction cup body, an adsorption bottom surface disposed on a bottom side of the suction cup body, and at least one disposed on the adsorption bottom surface The friction piece. The suction cup body is provided with an air inlet. The adsorption bottom surface includes an outer ring portion and an inner ring portion, and the outer ring portion and the inner ring portion comprise an annular flow path which is tapered by the adsorption bottom surface toward the inlet passage, and the gas passes through the A vacuum region is formed when the air inlet is blown out to the annular flow passage. The friction piece is disposed on the inner ring portion, and the object is stably supported by the frictional force between the object and the friction piece when being adsorbed by the vacuum region.

Therefore, the present invention has the following beneficial effects over the prior art:

1. In the present invention, the soft object can be adsorbed by the flat suction plate disposed on the circumferential side of the adsorption device, so as to avoid the problem that the object may sag downward when the object is transferred.

2. The invention can solve the problem that the conventional contact vacuum suction cup needs to additionally adjust the nozzle position when adsorbing the porous material sheet, and the conventional non-contact vacuum suction cup is used for adsorbing the object, and the outer fixing device is still needed. The fixed side edge begins with the problem of the transfer procedure.

3. The friction pad of the present invention is disposed on the inner ring portion to prevent the airflow from being weakened by the friction pad or causing a disturbance of the airflow due to being disposed on the outer ring portion, thereby reducing the vacuum suction force.

4. The outer ring portion and the inner ring portion of the present invention can be adjusted relative to each other to finely adjust the distance between the web and the bottom side of the nozzle.

100‧‧‧Vacuum adsorption equipment

10‧‧‧Adsorption device

11‧‧‧Sucker body

111‧‧‧ Inlet

112‧‧‧air inlet

12‧‧‧Adsorption bottom

121‧‧‧Outer Rings

1211‧‧‧ bottom side of the outer ring

122‧‧‧ Inner Ring Department

123‧‧‧Circular runner

13‧‧‧Motor

20‧‧‧ flat suction plate

21‧‧‧Adsorption surface

22‧‧‧vacuum pores

23‧‧‧Vacuum generator

24‧‧‧Setting holes

30‧‧‧Mobile devices

31‧‧‧ drive

32‧‧‧Connecting arm

D1‧‧‧balance gap

D2‧‧‧ distance

Figure 1 is a schematic view showing the appearance of a vacuum adsorption apparatus of the present invention.

2 is a schematic view showing the appearance of a vacuum adsorption apparatus of the present invention.

Figure 3 is a cross-sectional view of the adsorption device of the present invention.

Figure 4 is a partially enlarged schematic view of the adsorption device of the present invention.

For the structural features and operation methods of this case, and with the illustrations, please refer to it later. In addition, the drawings are not intended to limit the scope of the present invention, and the proportions thereof are not intended to limit the scope of the present invention.

Please refer to the "FIG. 1" and "FIG. 2" of the present invention, which are schematic views of the appearance of the vacuum adsorption device of the present invention. As shown in the figure, the present invention provides a vacuum adsorption device 100 for adsorbing soft articles, which is used for adsorbing the web. Achieve the purpose of transfer, flip, and inspection. The main structure of the vacuum adsorption apparatus 100 includes a moving device 30, a planar suction plate 20 coupled to the moving device 30, and a suction device 10 disposed on the planar suction plate 20. The mobile device 30 is driven by the driving device 31 to achieve the purpose of moving, turning, or rotating the plane suction plate 20 and the adsorption device 10, specifically, a transfer device, a flip device, or Rotating device, etc. It belongs to the equal aspect of this case. In the embodiment, the flipping device is shown, which mainly drives the connecting arm 32 to rotate by the driving device 31, so that the soft plate adsorbed on the flat suction plate 20 is rotated by 180 degrees to achieve the flipping of the web. purpose.

Referring to Fig. 3, there is shown a cross-sectional view of the adsorption device of the present invention, as shown in the drawings: a planar suction plate 20 and an adsorption device 10 according to the present invention, the detailed structure of which is as follows.

The flat suction plate 20 described in the present invention is coupled to the connecting arm 32 to move and reverse with the connecting arm 32. The bottom side of the flat suction plate 20 includes an adsorption surface 21 on which the soft plate abuts, and a plurality of vacuum air holes 22 are densely disposed on the adsorption surface 21. The plurality of vacuum vents 22 are connected to a vacuum generator 23 through which the gas in the vacuum vents 22 is extracted to generate a negative pressure of the absorbing articles. In the embodiment, the middle of the plane suction plate 20 is provided with a setting hole 24, and the setting hole 24 is reserved for mounting the adsorption device 10.

The adsorption device 10 of the present invention mainly comprises a suction cup body 11 which is mounted on the set hole and passes through the plane suction plate 20 to be disposed on one side of the bottom side of the suction cup body 11. The adsorption bottom surface 12 corresponds to an intermediate position of the adsorption surface 21 of the planar suction plate 20. An inlet passage 111 is disposed in the suction cup body 11. The suction bottom surface 12 includes an outer ring portion 121 and an inner ring portion 122. The outer ring portion 121 and the inner ring portion 122 are included in the suction portion. The bottom surface 12 has an annular flow path 123 which is tapered in the direction of the air inlet 111, and a friction piece 13 for the web is disposed on the inner ring portion 122.

In order to avoid damage caused by the collision of the object with the friction piece 13 during adsorption, the friction piece 13 is preferably a group of polyurethane or chloroprene rubber. Polyurethane has great adjustability in mechanical properties, and it has excellent properties such as shock resistance and wear resistance. Neoprene has better resilience and wear resistance than general synthetic rubber. Therefore, the above materials can provide Good physical properties are used as the selection of the friction piece 13. However, the selection of the materials is not intended to be a limitation of the invention, and is hereby incorporated by reference.

Please refer to FIG. 4 together, which is a partial enlarged schematic view of the adsorption device of the present invention, as shown in the figure: In the use state, the gas supply device supplies a high-speed airflow to the intake passage 111 of the suction cup body 11 via the pipeline, and the high-speed airflow is sent to the annular flow passage 123 via the intake passage 111 and is blown outward. When the high-speed air stream is blown out in the annular flow path 123, according to Bernoulli's law, the flow of the high-speed air stream causes the air pressure of the adsorption bottom surface 12 to be lower than that of the normal outer side, thereby forming a vacuum region of the adsorbed object. At this time, when the object is moved upward by the vacuum suction, the object is simultaneously affected by the repulsion of the gas (assuming that the gravity of the object is not counted). When the object is attracted by the vacuum suction force and is closer to the adsorption bottom surface 12, the repulsive force of the received gas is larger. When the suction force of the vacuum region and the repulsive force of the gas are balanced with each other, the object and the outer ring are caused. The bottom side 1211 is attributed to an equilibrium gap d1. In order to rely on the friction piece 13, the distance d2 between the bottom side of the friction piece 13 and the bottom side 1211 of the outer ring portion is at least equal to or slightly larger than the balance gap d1. At this time, part of the vacuum attraction force of the object is offset by the reaction force on the object to which the friction piece 13 is applied. The gravitational force of the object is converted into the friction between the object and the friction piece 13, so that the object is firmly coupled to the friction piece 13. When the gas is blown outward from the annular flow path 123 of the adsorption device 10 and attracts the soft plate, the vacuum generator 23 is simultaneously activated and generates a corresponding negative pressure in the vacuum pore 22, and the whole block is made by dense pores. The soft board is flatly attached to the adsorption surface 21. When the soft plate is attached to the adsorption surface 21, the gas system blown out from the annular flow path 123 flows out through the vacuum pores 22 provided around the adsorption bottom surface 12, so that the inflowing gas can have an outward outflow outlet. Increase the flow rate of the gas.

In the present invention, the distance d2 between the bottom side of the friction piece 13 and the bottom side 1211 of the outer ring portion is at least equal to or slightly larger than the balance gap d1, which means that the object can be adsorbed upward to the friction against gravity. In the case of the sheet 13, since the vacuum suction force exerted on the object by the vacuum chuck is exponentially decreased due to the distance d2 between the bottom side 1211 of the outer ring portion and the object (the outer side of the ring portion 1211 has a considerable distance from the object). Therefore, the slightly larger than the balance gap d1 in the present invention means that the object can receive the vacuum suction force and can overcome the distance between the gravity of the object itself, and more specifically, when the distance is reached. The object can be attached to the friction pad against gravity.

Since the balance gap d1 is varied by a large number of changes (flow rate of the gas, design of the annular flow path 123, weight of the object, etc.), the inner ring portion 122 of the present invention can be finely adjusted up and down as needed. Specifically, when the friction piece 13 is disposed on the inner ring portion 122, the inner ring portion can adjust the height of the inner ring portion 122 by an adjustment mechanism for the user to accurately adjust the The distance between the friction piece 13 and the bottom side 1211 of the outer ring portion is appropriately spaced.

In summary, the present invention can absorb soft objects by means of a flat suction plate disposed on the circumferential side of the adsorption device, so as to avoid the problem that the object may sag downward when the object is transferred. In addition, the present invention can solve the problem that the conventional contact vacuum suction cup needs to additionally adjust the nozzle position when adsorbing the porous material sheet, and the conventional non-contact vacuum suction cup is used for adsorbing the object, and the outer fixing device is still needed. The fixed side edge begins with the problem of the transfer procedure. Moreover, the friction pad of the present invention is disposed on the inner ring portion to prevent the airflow from being weakened by the friction pad or causing a disturbance of the airflow due to being blocked by the friction pad, thereby reducing the vacuum suction force. Furthermore, the outer ring portion and the inner ring portion of the present invention are relatively movable and adjustable for the device administrator to more precisely adjust the distance between the object and the bottom side of the outer ring portion.

The present invention has been described in more detail with reference to the preferred embodiments described above, but the present invention is not limited to the embodiments described above, and various changes and modifications may be made to the structures within the scope of the technical idea disclosed herein. Such changes and modifications are still within the scope of the invention.

10‧‧‧Adsorption device

11‧‧‧Sucker body

111‧‧‧ Inlet

112‧‧‧air inlet

12‧‧‧Adsorption bottom

121‧‧‧Outer Rings

1211‧‧‧ bottom side of the outer ring

122‧‧‧ Inner Ring Department

123‧‧‧Circular runner

13‧‧‧Motor

20‧‧‧ flat suction plate

21‧‧‧Adsorption surface

22‧‧‧vacuum pores

23‧‧‧Vacuum generator

24‧‧‧Setting holes

Claims (9)

A vacuum adsorption device capable of adsorbing a soft object, comprising: a mobile device comprising at least one connecting arm, and a driving device connected to the connecting arm to operate the connecting arm to move; a plane suction plate is connected to The connecting arm, the flat suction plate comprises an adsorption surface for the soft object to be placed, and a plurality of vacuum pores disposed on the adsorption surface and providing a negative pressure to adsorb the soft object; and an adsorption device comprising a suction cup body mounted on the flat suction plate, a suction bottom surface disposed on the bottom side of the suction cup body and corresponding to the adsorption surface, and a friction piece disposed on the adsorption bottom surface, the suction cup body is provided with a body The intake bottom surface includes an outer ring portion and an inner ring portion, and the outer ring portion and the inner ring portion comprise an annular flow path which is tapered by the suction bottom surface toward the inlet passage. When the gas is blown to the annular flow passage through the air inlet, a vacuum region is formed, and the friction piece is disposed on the inner ring portion, and the soft object is supported by the vacuum region. Tab and affixed to the bottom surface of the circumferential surface of the suction side of the adsorption. The vacuum adsorption device for adsorbing a soft object according to claim 1, wherein the suction force of the vacuum region and the repulsive force of the gas are balanced to form a balance gap between the object and the bottom side of the outer ring portion, The distance between the bottom side of the friction piece and the bottom side of the outer ring portion is equal to or slightly larger than the balance gap. The vacuum adsorption device for adsorbing a soft object according to claim 2, wherein the mobile device is a transfer device, a turning device, or a rotating device. The vacuum adsorption device capable of adsorbing a soft article according to the second aspect of the invention, wherein the friction piece is selected from the group consisting of polyurethane and chloroprene rubber. The vacuum adsorption device for adsorbing a soft object according to claim 2, wherein the inner ring portion is adjustable up and down with respect to the outer ring portion. An adsorption device for adsorbing at least one object, the adsorption device comprising: a suction cup body, the suction cup body is provided with an air inlet; an adsorption bottom surface is disposed on a bottom side of the suction cup body, the adsorption The bottom surface includes an outer ring portion and an inner ring portion, and the outer ring portion and the inner ring portion include an annular flow path which is tapered by the suction bottom surface toward the inlet passage, through which the gas passes a vacuum region is formed when the channel is blown to the annular flow passage; and at least one friction piece is disposed on the inner ring portion, and the object is adsorbed by the vacuum region by the object and the friction piece The friction is firmly dependent on the friction piece. The adsorption device of claim 6, wherein the suction force of the vacuum region and the repulsive force of the gas are balanced to form an equilibrium gap between the object and the bottom side of the outer ring portion, and the bottom side of the friction piece The distance from the bottom side of the outer ring portion is equal to or slightly larger than the balance gap. The adsorption device according to claim 7, wherein the friction piece is selected from the group consisting of polyurethane and chloroprene rubber. The adsorption device of claim 7, wherein the inner ring portion is adjustable up and down with respect to the outer ring portion.