TWI540089B - Working machine and a vacuum adsorption carrier means thereof - Google Patents

Description

Working machine and vacuum adsorption bearing device therefor

The invention relates to an adsorption mechanism for sucking a workpiece such as a printed circuit board, a glass plate or a liquid crystal panel, and more particularly to a vacuum adsorption type bearing device having a plurality of independent adsorption regions.

In the manufacturing industries such as printed circuit boards and liquid crystal panels, it is often necessary to use various types of vacuum adsorption type carrying devices to carry and suck work materials such as printed circuit boards, glass plates or liquid crystal panels, so as to perform such work. Scheduled work, such as shipping operations, inspection operations, labeling operations, inkjet operations, electrical testing operations. . . and many more. Such a vacuum adsorption carrier is typically configured on a work machine to perform the aforementioned operations. The vacuum adsorption type bearing device is generally composed of an adsorption platform and an air extraction system. The adsorption platform is usually disposed on the machine table of the working machine, and the suction platform has a plurality of suction holes on the table surface. The ventilation system is generally disposed in an internal space below the machine platform, and is connected to the adsorption platform to evacuate the internal space of the adsorption platform, so that the suction holes generate suction to be sucked and placed on the surface. Workplace.

In the case where the area of the work object is smaller than that of the adsorption platform, some of the suction holes are not sucked into the work object, and in addition, when the work object has holes or notches, the holes or the gaps are The suction hole is also not sucked into the work. Thus, the overall suction caused by the ventilation system is wasted by these suction holes that do not attract the work, thereby causing a problem of reduced suction. In the case where the work item is a flexible printed circuit board, the adsorption platform may not be able to suck the soft printed circuit board flatly due to the aforementioned problems, or even cannot be sucked, especially on the flexible printed circuit board. Very soft and / or very small. Therefore, existing The vacuum adsorption carrier has the need to improve this problem. At present, the related technologies include at least Taiwan Patent Nos. 483644, I233853, I230110 and M347991.

The invention provides a vacuum adsorption type bearing device and a working machine equipped with the vacuum adsorption type bearing device, and the vacuum adsorption type bearing device has a plurality of independent adsorption regions, and under appropriate control, the independent adsorption regions can be utilized for adsorption Different sizes of work, especially flexible printed circuit boards of different sizes.

More specifically, the vacuum adsorption type carrying device of the present invention comprises an adsorption platform, an air extraction system connecting the air chambers, and a plurality of switching valves. The adsorption platform is internally divided into a plurality of independent non-intersecting air chambers, and the outside has a surface for carrying the work object and a plurality of suction holes distributed on the surface, the suction holes respectively communicating with the interior of the corresponding air chamber Space, such that each of the plenums and the suction holes therein form a separate adsorption zone. Wherein, each of the on-off valves is used to block or conduct the communication relationship between the corresponding air chamber and the ventilation system, and the on-off valves can be controlled by a control system of the working machine. Under proper control, the ventilation system can be ventilated only for the air chamber corresponding to the suction hole covered by the working object, so that the suction force caused by the ventilation system is concentrated on the working object to avoid waste.

The exhaust system preferably includes a bellows and a drafting device connected to the bellows. The bellows has a plurality of ports respectively connected to the air chambers in a one-to-one manner. Each of the on-off valves preferably includes a cylinder disposed on the bellows and a sealing gasket disposed on the telescopic shaft of the cylinder, the gaskets respectively facing the ports one-to-one and capable of following The expansion and contraction of the telescopic shaft belongs to seal or release the opposite port. Preferably, the ventilation device comprises a blower, a switching cylinder and a three-way pipe, wherein the three connecting ends of the three-way pipe are respectively connected to the blower, the switching cylinder and the bellows, and the switching cylinder has one end connected to the outside space. More preferably, the present invention also includes a plurality of connecting tubes, each connecting tube connecting each of the ports and their corresponding air chambers. In addition, the above-mentioned air chambers of the present invention are arranged in a plurality of rows arranged side by side in order of magnitude, and the air chambers in the same row have the same size and the same number of suction holes and the same distribution. With such a configuration, the arrangement can be made The adsorption platform can be applied to a variety of different sizes and shapes of work.

1‧‧‧Vacuum adsorption bearing device

10‧‧‧Adsorption platform

101‧‧‧ air chamber

103‧‧‧ countertop

104‧‧‧ suction hole

11‧‧‧Exhaust system

100‧‧‧Connecting tube

111‧‧‧ bellows

112‧‧‧Exhaust equipment

110‧‧‧ mouth

113‧‧‧Blowers

114‧‧‧Switching cylinder

115‧‧‧Three-way pipeline

12‧‧‧ switch valve

121‧‧‧ cylinder

122‧‧‧ Telescopic shaft

123‧‧‧Sealing gasket

2‧‧‧Working machine

20‧‧‧ machine

200‧‧‧Working surface

3‧‧‧Transfer device

30‧‧‧ Track

31‧‧‧Adsorption mechanism

4‧‧‧Works

41, 42, 43‧‧‧Soft printed circuit boards

5‧‧‧Detector

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is a schematic diagram of a system configuration of the preferred embodiment of the present invention.

The third figure is an exploded perspective view of the adsorption platform 1 of the preferred embodiment of the present invention.

The fourth figure is a plan view of the adsorption platform 1 of the preferred embodiment of the present invention.

Fig. 5 is a plan view showing a state in which a large-sized flexible printed circuit board 41 is placed on the adsorption stage 1 of the preferred embodiment of the present invention.

Figure 6 is a partial cross-sectional view of the preferred embodiment of the present invention for illustrating the operation of its switching valve 12.

Fig. 7 is a plan view showing a small-sized flexible printed circuit board 42 placed on the adsorption platform 1 of the preferred embodiment of the present invention.

Figure 8 is a partial cross-sectional view of the preferred embodiment of the present invention for illustrating the operation of its switching valve 12.

Fig. 9 is a plan view showing a state in which a medium-sized flexible printed circuit board 43 is placed on the adsorption stage 1 of the preferred embodiment of the present invention.

Figures 1 to 4 show a preferred embodiment of the vacuum adsorption type carrying device 1 of the present invention. As shown in the first figure, the vacuum adsorption type carrying device 1 is disposed on a work machine 2, such as an inspection work machine for checking the quality of the line. In this example, the working machine 2 is further provided with a transfer device 3 for moving the work, a work device (not shown), and a control system (not shown). The transfer device 3 includes a track 30 and a suction mechanism 31 movable along the track 30. The adsorption mechanism 31 is used to suck and discharge a work object 4. The working device is used to perform a predetermined operation, such as a shipping operation, an inspection operation, a labeling operation, an inkjet operation, and an electrical test operation. . . and many more. In this example, the work device is an image pickup device in an inspection mechanism for taking an image of the work object 4 placed on the vacuum adsorption type carrier device 1. The control system is a programmable control system for controlling the operation of the aforementioned devices.

As shown in the first and second figures, the vacuum adsorption type carrying device 1 includes an adsorption platform 10, an exhaust system 11, and a plurality of switching valves 12. The adsorption platform 10 is fixed to a work surface 200 of the machine table 20 of the working machine 2. The exhaust system 11 is disposed in the machine 20 The portion is located below the work surface 200.

As shown in the third and fourth figures, the interior of the adsorption platform 10 is divided into a plurality of independently non-communicating air chambers 101 having a surface 103 for carrying the work and a plurality of distributions on the table 103. The suction holes 104 are the same size and are respectively connected to the inner space of the corresponding air chamber 101. Preferably, the number of the air chambers 101 is six in total, and three rows are arranged side by side in order of size. The two gas chambers 101 in the same row are the same size, and the number of the suction holes 104 on the same row is the same and the distribution is the same. With such a configuration, the adsorption platform 10 can be applied to a plurality of workpieces of different sizes and shapes.

As shown in the second and third figures, the exhaust system 11 is disposed below the adsorption platform 10 and connected to the air chambers 101 for exhausting the air chambers 101. Preferably, the air extracting system 11 connects the air cells 101 one-to-one by a plurality of flexible connecting pipes 100. If the height positions of the air chambers 101 are very low and are close to the work surface 200, the connection between the air chambers 101 and the air distribution system 11 can be directly connected. In this case, the foregoing connection tubes 100 need not be disposed. .

As shown in the second figure, the on-off valves 12 are respectively disposed one-to-one at the junction of the air chambers 101 and the air extraction system 11. More specifically, the exhaust system 11 includes a bellows 111 and a drafting device 112 that connects the bellows 111. The bellows 111 has a plurality of ports 110 respectively connected to the gas chambers 101 one-to-one. In this example, they are connected together by a connecting pipe 100 as described in the preceding paragraph, wherein the connections are connected. The tube 100 is disposed between the adsorption platform 10 and the bellows 111 of the air extraction system 11, and one end of each connection tube 100 is connected downward to a corresponding port, and the other end is connected to the corresponding air chamber 101 upward. The air extraction device 112 includes a blower 113, a switching cylinder 114, and a three-way conduit 115. The three connecting ends of the three-way pipe 115 are respectively connected to the blower 113, the switching cylinder 114 and the bellows 111. One end of the switching cylinder 114 is connected to the three-way pipe 115, and the other end is connected to the external space. Referring to the sixth figure, each of the on-off valves 12 includes a cylinder 121 and a gasket 123 disposed on the bellows 111. The cylinder 121 has a telescopic shaft 122 extending into the bellows 111. The gasket 123 is disposed inside the bellows 111 and is located on the telescopic shaft 122 of the cylinder 121. The gaskets 123 can be made of superior glue. Further, the sealing gaskets 123 are directly opposite to the plurality of through-ports 110, and the sealing gasket 123 of each of the switching valves 12 can be sealed or released relative to the expansion and contraction of the telescopic shaft 123. Port 110.

Referring to the second, fifth and sixth figures, under the control of the control system, the transfer device 3 first moves a work object onto the table 103 of the adsorption platform 10, as shown in the fifth figure (omitted from the figure) The suction hole 104) is a large-sized flexible printed circuit board 41 whose area can cover all of the air cells 101. Next, a detector 5 (shown only schematically) located at a corner of the mesa 103 detects that the work object is already on the mesa 103 and thus sends a signal to the control system. After receiving the signal, the control system causes the ventilation system 11 to operate to cause the adsorption platform 10 to suck the work. Specifically, at this time, the blower 113 of the air extracting device 112 is in the air blowing operation, the switching cylinder 114 is in a closed state, and the sealing gaskets 123 of all the switching valves 12 are in the home position, As shown in the sixth figure (the flexible printed circuit board 41 is omitted in the figure), all the air chambers 101 in the adsorption platform 10 can be evacuated by the air blowing operation of the air blower 113 (the exhaust path is The path a→b) causes all the suction holes 104 of the table 103 to generate suction to hold the work and keep it flat so that the work device performs the predetermined work on the work.

When the predetermined operation is completed and the work object needs to be taken out from the adsorption platform 10, the control system will drive the switching cylinder 114 to switch to an open state. At this time, the blower 113 will perform ventilation through the switching cylinder 114. The evacuation path is the path c→b. Thus, the vacuum state originally caused by the blower 113 is destroyed, so that the suction holes 104 lose suction, so that the work is taken out.

If the work object is a small-sized flexible printed circuit board 42, the area can only cover one of the air chambers 101, as shown in the seventh figure. At this time, under the control of the control system, the blower 113 is in the exhaust. In operation, the switching cylinder 114 is in the closed state, and only the gasket 123 corresponding to the switching valve 12 of one of the air chambers 101 is held in place, and the gasket 123 of the other switching valve 12 is extended and contracted therewith. The shaft 122 is extended to seal its corresponding port 110 as shown in the eighth drawing (the flexible printed circuit board 42 is omitted in the drawing). This means that the connection relationship between the other air chamber 101 and the air extraction system 11 is blocked except that the connection relationship between the air chamber 101 and the air extraction system 11 is still turned on, and as a result, All the suction generated by the air blow operation of the blower 113 is concentrated on the suction holes 104 corresponding to one of the air chambers 101 without being wasted.

Moreover, if the work object is a medium-sized flexible printed circuit board 43, as shown in the ninth figure, the control system only needs to control the density of the on-off valves 12 corresponding to the four gas chambers 101. The gasket 12 is held in place, and the gasket 12 of the remaining switching valve 12 rises as it extends from the telescopic shaft 122 to seal its corresponding port 110. Thus, all the suction generated by the air blow operation of the air blower 113 is concentrated on the suction holes 104 corresponding to the four air chambers 101 without being wasted.

As can be seen from the above description, each of the gas chambers 101 and the suction holes 104 thereon constitute an independent adsorption region, and the action (absorption) or non-action (non-suction) of each adsorption region can be regulated by the control system. Furthermore, for different sizes of work, the control system can selectively open one or more air chambers covered by the work object through the control of the on-off valves 12, and The covered air chamber is closed to ensure that all suction generated by the air blower operation of the blower 113 acts on the work object to avoid waste.

1‧‧‧Vacuum adsorption bearing device

10‧‧‧Adsorption platform

100‧‧‧Connecting tube

2‧‧‧Working machine

20‧‧‧ machine

200‧‧‧Working surface

3‧‧‧Transfer device

30‧‧‧ Track

31‧‧‧Adsorption mechanism

4‧‧‧Works

Claims (7)

A vacuum adsorption type carrying device comprises: an adsorption platform, the interior of which is divided into a plurality of independent and non-communicating air chambers, the outside of which has a surface for carrying the work object and a plurality of suction holes distributed on the surface, The suction holes respectively communicate with the inner space of the corresponding air chamber; an air extraction system is disposed under the adsorption platform and is connected to the air chambers for exhausting the air chambers, the air extraction system includes a wind box and the connection a ventilation device of the wind box, the bellows having a plurality of ports respectively corresponding to the air chambers; and a plurality of switching valves respectively disposed at one-to-one connection between the air chambers and the ventilation system, and each The on-off valve includes a cylinder and a sealing gasket disposed on the bellows of the ventilation system, the cylinder having a telescopic shaft extending into the interior of the bellows, the gasket being disposed inside the bellows and located at the The telescopic shafts of the cylinders; the gaskets respectively face the ports one-to-one and can seal or release the corresponding ports according to the telescopic movement of the telescopic shaft to which they belong. The vacuum adsorption type bearing device of claim 1, wherein the ventilation device further comprises a blower, a switching cylinder and a three-way pipe, wherein the three connecting ends of the three-way pipe are respectively connected to the blower, and the switching The cylinder and the bellows, and the switching cylinder has one end connected to the external space. The vacuum adsorption type bearing device of claim 1, further comprising a plurality of connecting pipes, wherein the connecting pipes are disposed between the adsorption platform and the wind box of the air extracting system, and one end of each connecting pipe The lower end is connected to the corresponding port, and the other end is connected upward to the corresponding air chamber. The vacuum adsorption type bearing device according to claim 1, wherein the air chambers are arranged in a row in a row according to the size order, and the air chambers in the same row have the same size and the same number of suction holes on the same. The distribution is the same. A working machine comprising a machine platform and a vacuum adsorption type load bearing device according to any one of claims 1 to 4, wherein the adsorption platform is fixed on a work surface of the machine table, the ventilation system and The switching valves are disposed inside the machine and below the work surface. A working machine comprises: an adsorption platform, the interior of which is divided into a plurality of independent and non-intersecting air chambers, the outside of which has a surface for carrying a work object and a plurality of suction holes distributed on the surface, the suction The air holes are respectively connected to the inner space of the corresponding air chamber; an air blowing system is disposed under the adsorption platform and is connected to the air chambers for exhausting the air chambers, the air blowing system includes a wind box and the bellows is connected a ventilation device, the bellows having a plurality of ports respectively corresponding to the air chambers; a plurality of switching valves respectively disposed at one-to-one connection between the air chambers and the ventilation system, and each of the switching valves includes a cylinder and a sealing gasket disposed on the bellows of the ventilation system, the cylinder having a telescopic shaft extending into the interior of the bellows, the gasket being disposed inside the bellows and located at a telescopic shaft of the cylinder The sealing gaskets respectively face the ports one-to-one and can seal or release the corresponding ports according to the telescopic movement of the telescopic shaft to which they belong; and a control system controls the ventilation system And the operation of the on-off valve to The exhaust system only communicates gas chambers for suction hole is covered by the corresponding work was carried out to ventilation. The working machine of claim 5 or 6, further comprising: a transfer device for moving the work object to the adsorption platform; and performing a predetermined reservation on the work object on the adsorption platform A working device for the job.