CN104180058A - Rotary cam type vacuum switching module - Google Patents

Abstract

A rotary cam vacuum switching module comprising: a tube, a hollow cylinder, a plurality of mechanical valves and a vent pipe. The tube body is fixedly provided with a cam, and the hollow column body is sleeved outside the tube body and provided with a base. The plurality of mechanical valves are arranged on the base in a ring mode, and each mechanical valve is provided with an actuating portion which is mutually interfered with a protruding portion of the cam in the radial direction. The vent pipe is arranged in the pipe body and is communicated with an inlet of each mechanical valve and a vacuum pump. One of the tube or the hollow cylinder rotates, and the protrusion sequentially presses against the actuating portion of each mechanical valve, thereby opening or closing an outlet of each mechanical valve to achieve the purpose of vacuum switching. The cam mechanism controls the opening or closing of a plurality of mechanical valves, and can reduce the complexity of mechanism design and the programming and modification of electronic control design and software programs.

Description

Rotary Cam Vacuum Switching Module

technical field

The invention relates to a rotary cam type vacuum switching module, in particular to a rotary cam type vacuum switching module which uses a cam mechanism to switch vacuum suction sources.

Background technique

On a rotating disk, if a fixed station is required to maintain vacuum, the previous mechanism is configured to install a set of solenoid valves at each station, and then use program control to switch between vacuum suction and non-suction. Please refer to FIG. 7 , which is a schematic diagram of vacuum adsorption of a known turntable solenoid valve. As shown in the figure, there are four vacuum suction stations 91 on a turntable 9, and the angle between every two adjacent vacuum suction stations 91 is 90 degrees, wherein the rotation of the turntable 9 drives each vacuum suction station 91 to rotate to the position, and then By the control of the solenoid valve 92 installed on each vacuum suction station 91, it is determined whether each station will carry out vacuum suction.

The disadvantage of this method is that each station needs to install a set of solenoid valves 92, and the mechanism design is complicated, and it also increases the trouble of electronic control design and software program writing and modification, so there is a need for improvement.

Because of this, the applicant, based on the spirit of active invention, desperately thought of a rotary cam type vacuum switching module that can solve the above-mentioned problems, and finally completed the present invention after several researches and experiments.

Contents of the invention

The main purpose of the present invention is to provide a rotary cam type vacuum switching module, which only needs a group of solenoid valves to keep the vacuum normally open, and the cam mechanism controls the opening or closing of multiple mechanical valves to achieve the purpose of vacuum switching, so It can reduce the complexity of the mechanism, as well as the electronic control design and the writing and modification of software programs.

In order to achieve the above purpose, the rotary cam type vacuum switching module of the present invention includes:

A pipe body, a hollow cylinder, a plurality of mechanical valves and a vent pipe.

The pipe body is fixed with a cam, and the hollow cylinder is sleeved on the outside of the pipe body and has a base. A plurality of mechanical valve rings are arranged on the base, and each mechanical valve has an actuating part that interferes with a protruding part of the cam in the radial direction. The ventilation pipe is arranged in the pipe body and communicated with an inlet of each mechanical valve and a vacuum pump. Rotate one of the tube body or the hollow cylinder, press the protruding part against the actuating part of each mechanical valve in sequence, and then open or close an outlet of each mechanical valve, so as to achieve the purpose of vacuum switching.

The above invention may also include a diverter device arranged on the ventilation pipe, which can be used to divert the vacuum suction source, and can be connected to the inlet of each mechanical valve by a plurality of pipelines.

In addition, the present invention may further include a disc body with a plurality of bearing seats, which may be fixed on the base of the hollow cylinder, and the outlet of each mechanical valve may be connected to an inlet of each bearing seat through a plurality of pipelines.

Furthermore, the aforementioned plurality of bearing seats can be four or other numbers, and the included angle between every two adjacent bearing seats can be the same.

In addition, the number of the above-mentioned plurality of mechanical valves can be four or other numbers, and the arc diameter of the aforementioned protrusion can simultaneously interfere with the two actuating parts of the second of the plurality of mechanical valves, or can interfere with the action of one of the plurality of mechanical valves. Actuating parts, or other different numbers of actuating parts that interfere with multiple mechanical valves at the same time.

Aforesaid cam and pipe body can be integral structure. Furthermore, the hollow cylinder and the pipe body can be arranged coaxially.

Another purpose of the present invention is to increase the efficiency of machine modification. If you want to increase or decrease the suction position, you only need to change the shape of the cam and increase or decrease the number of mechanical valves to achieve the control of the switch of the pipeline at each position.

Description of drawings

Fig. 1 is a perspective view of the first preferred embodiment of the rotary cam type vacuum switching module of the present invention.

Fig. 2 is an exploded view of the first preferred embodiment of the rotary cam type vacuum switching module of the present invention.

Fig. 3 is a partial enlarged perspective view of the first preferred embodiment of the rotary cam type vacuum switching module of the present invention.

Fig. 4 is a top view of the first preferred embodiment of the rotary cam type vacuum switching module of the present invention.

Fig. 5 is a partial enlarged perspective view of the second preferred embodiment of the rotary cam type vacuum switching module of the present invention.

Fig. 6 is a partial enlarged perspective view of the third preferred embodiment of the rotary cam type vacuum switching module of the present invention.

Fig. 7 is a schematic diagram of vacuum adsorption of a known turntable solenoid valve.

Explanation of symbols in the attached drawings:

1 pipe body, 11 cam, 111 protruding part, 2 hollow cylinder, 21 base, 211 protruding part, 3 mechanical valve, 31 actuating part, 32 inlet, 33 outlet, 4 air pipe, 41 pipeline, 5 disk Body, 51 bearing seat, 52 pipeline, 53 inlet, 6 diversion device, 61 outlet, 7 vacuum pump, 71 solenoid valve, 8 pipe body, 81 cam, 811 protruding part, 9 turntable, 91 vacuum suction station, 92 solenoid valve .

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, they are the perspective view, exploded view, partially enlarged view and top view of the first preferred embodiment of the rotary cam type vacuum switching module of the present invention.

As shown in the figure, the rotary cam type vacuum switching module of this embodiment includes: a pipe body 1, a hollow cylinder body 2, a plurality of mechanical valves 3, a ventilation pipe 4, a flow diversion device 6, a disc body 5 and a plurality of Bearing seat 51.

The pipe body 1 of this embodiment has a cam 11, which is integrally structured with the pipe body 1, and the hollow cylinder 2 is sleeved on the outside of the pipe body 1, coaxially arranged with the pipe body 1, and the hollow cylinder 2 It has a base 21 . The plurality of mechanical valves 3 are four in number, and are arranged on the base 21 , and each mechanical valve 3 has an actuating portion 31 that interferes with a protruding portion 111 of the cam 11 in the radial direction. The ventilation pipe 4 is arranged in the pipe body 1 and is respectively connected with a vacuum pump 7 and the distribution device 6 , and then a plurality of outlets 61 of the distribution device 6 and an inlet 32 of the plurality of mechanical valves 3 are connected by a plurality of pipelines 41 .

The vacuum pump 7 is kept in a vacuum normally open state by a group of solenoid valves 71 . Furthermore, the arc diameter of the protruding portion 111 of the cam 11 in this embodiment interferes with the two actuating portions 31 of two of the four mechanical valves 3 at the same time, so the splitter device 6 on the air pipe 4 and the hollow cylinder 2 are pivoted simultaneously. Turn, so that the protruding part 111 of the cam 11 interferes with the second actuating part 31 of the four mechanical valves 3 in sequence, so the outlets 33 of the two mechanical valves 3 can be opened or closed at the same time to achieve the purpose of vacuum switching.

The disc body 5 of this embodiment has a plurality of bearing seats 51, which are fixed on the four convex parts 211 of the hollow cylinder 2, and the outlet 33 of each mechanical valve 3 is connected to each of the bearing seats 51 by a plurality of pipelines 52. One entrance 53 . Furthermore, the number of the plurality of bearing seats 51 in this embodiment is four, and the angle between every two adjacent bearing seats 51 is 90 degrees.

This embodiment mainly explains that only one set of solenoid valves 71 is required to keep the vacuum pump 7 normally open, and then the rotation of the hollow cylinder 2 and the protruding part 111 of the cam 11 interfere with the second operation of the four mechanical valves 3 in sequence. Therefore, the outlets 33 of the two mechanical valves 3 can be opened or closed at the same time, and then the outlets 33 of the four mechanical valves 3 and the inlets 53 of the four bearing seats 51 on the disc body 5 can be connected by a plurality of pipelines 52 to achieve four bearings. The purpose of vacuum switching between seat 51. Therefore, this embodiment can reduce the design of complex mechanisms, electronic control design, and writing and modification of software programs.

As shown in FIG. 5 , it is a partially enlarged perspective view of the second preferred embodiment of the rotary cam type vacuum switching module of the present invention. The structure of this embodiment is roughly the same as that of the first preferred embodiment, except that the first preferred embodiment is that the tube body 1 is fixed, and the hollow cylinder 2 drives the disc body 5 to rotate, while in this embodiment, the tube body 1 rotates , the hollow cylinder 2 is fixed with the disc body 5, and the protruding part 111 of the cam 11 interferes with the two actuating parts 31 of the second of the four mechanical valves 3 in sequence, so the outlets 33 of the two mechanical valves 3 can be opened or closed at the same time.

This embodiment mainly explains that the tube body 1 is rotated, and the protruding part 111 of the cam 11 presses against the two actuating parts 31 of the second of the four mechanical valves 3 in order to achieve the purpose of vacuum switching. Therefore, this embodiment can also reduce the design of complex mechanisms, electronic control design, and writing and modification of software programs.

As shown in FIG. 6 , it is a partially enlarged view of the third preferred embodiment of the rotary cam type vacuum switching module of the present invention. The structure of this embodiment is substantially the same as that of the first preferred embodiment, the only difference being that the arc diameter of the protruding portion 111 of the cam 11 of the first preferred embodiment interferes with the two actuating parts of the second of the four mechanical valves 3 at the same time 31, and the arc diameter of the protruding portion 811 of the cam 81 of the pipe body 8 in this embodiment interferes with the actuating portion 31 of one of the four mechanical valves 3 .

This embodiment mainly explains that the rotation of the hollow cylinder 2 and the protruding portion 811 of the cam 81 control the actuating portion 31 of a mechanical valve 3 to actuate at a time. Therefore, the present invention only needs to change the shape of the cam 81 and cooperate with the mechanical valve 3 with normally open or normally closed function to control the opening or closing of the outlet 33 of each mechanical valve 3 .

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of claims in the application, rather than limited to the above-mentioned embodiments.

Claims (8)

1. a rotating cam formula vacuum handover module, includes:

One body, is installed with a cam;

One hollow cylinder, is sheathed on the outside of this body, has a pedestal;

Plural number mechanical valve, is located on this pedestal, and this each mechanical valve has an actuating part of upwards mutually interfering in footpath with a bump of this cam; And

One breathing pipe, is arranged in this body, and is connected with an entrance and a vacuum pump of this each mechanical valve;

Wherein, by the one of this body or this hollow cylinder, rotated, by this bump, sequentially compressed this actuating part of this each mechanical valve, and then open or close an outlet of this each mechanical valve, and reach the object that vacuum is switched.

2. rotating cam formula vacuum handover module according to claim 1, wherein, comprises that a part flow arrangement is arranged on this breathing pipe, in order to minute flow vacuum, inhales source, and by plural pipeline, is linked to respectively this entrance of this each mechanical valve.

3. rotating cam formula vacuum handover module according to claim 1, wherein, comprise that one has the disk body of plural load bearing seat, be fixedly arranged on this pedestal of this hollow cylinder, and this outlet of this each mechanical valve is linked to respectively an entrance of this each load bearing seat by plural pipeline.

4. rotating cam formula vacuum handover module according to claim 3, wherein, this plural number load bearing seat quantity is four, the angle between every two adjacent these load bearing seats is identical.

5. rotating cam formula vacuum handover module according to claim 1, wherein, the quantity of this plural number mechanical valve is four, the arc footpath of this bump is its this two actuating part of two of simultaneously interfering this four mechanical valve.

6. rotating cam formula vacuum handover module according to claim 1, wherein, this plural number mechanical valve quantity is four, the arc footpath of this bump is this actuating part of interfering the one of this four mechanical valve.

7. rotating cam formula vacuum handover module according to claim 1, wherein, this cam and this body are integral type structure.

8. rotating cam formula vacuum handover module according to claim 1, wherein, this hollow cylinder is coaxial setting with this body.