KR101662583B1 - Switching unit for pneumatic pump - Google Patents

Abstract

The present invention relates to an upper and lower stationary plate coupled to upper and lower ends of a cylindrical housing and formed with an injection hole communicating with the inside of the housing, a piston rod vertically reciprocatingly mounted on the inner diameter of the housing and inserted through the lower stationary plate, The present invention relates to a switching unit of a highly viscous pneumatic pump including a cylinder having a cylinder and a cylinder and a cylinder for cylinder expansion. More specifically, a power pneumatic passage connected to the side surface of the cylinder, Wherein the upper and lower pneumatic passages are connected to the injection holes of the upper and lower fixed disks from the other side and are formed so as to penetrate from the other side to the other side so that the pneumatic pressure is discharged to the outside, A member; A power inlet, an upper air outlet, and an upper air outlet and a lower air outlet so that the power pneumatic path, the upper and lower pneumatic pressure, and the ends of the upper and lower exhaust holes are respectively communicated with each other, And a channel opening / closing pin repeatedly formed with a large diameter which is in close contact with an inner diameter surface of the opening and closing hole and a small diameter smaller than the large diameter reciprocates both ends of the opening and closing hole, And one of the upper and lower air outlets is kept open while one of the upper and lower air outlets is kept open while the other small diameter section is maintained in either the lower and upper exhaust outlets, A master cylinder for stopping any one of the upper and lower air outlets so as to close any of the upper air outlets; The pipe opening and closing pins of the master cylinder are lowered or raised from the top dead center and the bottom dead point of the piston in the housing to open and close either one of the power inlet and the upper and lower air outlet, And a switching member which is respectively coupled with a structure symmetrical to the coupling hole formed through the fixing plate.

Description

[0001] Switching unit for pneumatic pump [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching unit of a high-viscosity pneumatic pump for supplying a high-viscosity adhesive used for attaching various attachments to a vehicle body during manufacture of a vehicle, In switching to the upper or lower part of the housing, the pipeline opening / closing pin inside the master cylinder is moved up and down while being switched by the piston in the top dead center stroke and the bottom dead center stroke, And a high-viscosity pneumatic pump that closes one of the upper and lower air outlets in the large-diameter section.

Generally, a high viscosity adhesive (sealant) is used for attaching automobile window, various rubber materials or plastic material molding to a car body in an automobile assembly line. Since a high viscosity adhesive is difficult to be pumped by a general pump due to its high viscosity, The developed high viscosity pneumatic pump is used.

As an example, refer to Korean Patent Laid-Open Publication No. 2003-0079025 "Pneumatic Pump" for a high viscosity pneumatic pump.

The conventional pneumatic pump includes a pump housing having a cylinder therein and having upper and lower pneumatic discharge outlets for supplying pneumatic pressure to upper and lower sides of the cylinder; A piston reciprocating upward and downward by a pneumatic pressure that selectively flows into the upper and lower pneumatic discharge outlets while vertically operating in the cylinder; An outer piston connected to the piston for pumping an adhesive contained in the adhesive tank when reciprocating the piston; A master cylinder for alternately supplying pneumatic pressure to the upper and lower pneumatic discharge ports while switching the pneumatic lines while supplying pneumatic pressure to the cylinder, and reciprocating the piston; And a pneumatic valve that is installed inside the cylinder to control the pneumatic circuit of the master cylinder to alternately supply the pneumatic pressure supplied to the master cylinder to the upper and lower sides of the cylinder corresponding to the stroke state of the piston.

In the conventional pneumatic pump as described above, when the pneumatic valve provided at the upper and lower sides of the cylinder presses the movable portion of the pneumatic valve at the reciprocating motion (top dead center and bottom dead point) of the piston to open the pneumatic line of the pneumatic valve, Pneumatic pressure is applied to move the pin for opening and closing the pipe.

The pneumatic pressure for operating the piston is supplied to one side of the piston while the outlet of the master cylinder is connected to the pneumatic line connected to the upper and lower sides of the cylinder by the movement of the pipeline opening and closing pin.

For example, when the pipeline opening / closing pin of the master cylinder rises by the pneumatic valve, the pneumatic line connected to the lower side of the cylinder is connected to the pneumatic line introduced into the master cylinder, and the pneumatic pressure is supplied to the lower side of the cylinder. When the pipeline opening / closing pin of the cylinder descends, the pneumatic line flowing into the master cylinder is connected to the pneumatic line connected to the upper side of the cylinder, and the pneumatic pressure is supplied to the upper side of the cylinder.

When the master cylinder and the pneumatic line connected to the piston cylinder are alternately switched as described above, the piston reciprocates.

However, due to the long use, there is a problem that the output of the piston is dropped from the time when the pneumatic pressure supplied to the pneumatic valve leaks, and the output of the piston is reduced. In addition, the pipeline opening pin of the master cylinder is completely raised or lowered However, there is a problem in that a complete up-down operation is not performed, thereby lowering the reliability of the product by lowering the output.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above problems, and it is an object of the present invention to provide a switching valve for switching a supply of air to a master cylinder, So that the pneumatic pressure is branched from the power pneumatic path to which the main pneumatic pressure is supplied and is supplied to the switching member so as to drive the switching member in a state in which no separate power source or power is required The piping operation of the master cylinder can be quickly and completely performed by the pneumatic pressure so that the upper and lower strokes of the piston can be completely made and the output is lowered, thereby improving the reliability of the product. Pump switching unit.

The above object is achieved by an upper and lower stationary plates 310 and 312 which are coupled to upper and lower ends of a cylindrical housing 202 and have injection holes 320 communicating with the inside of the housing 202, And a piston (206) installed at the upper end of a piston rod (204) which is vertically reciprocatingly mounted on the inner diameter and inserted into the lower fixed circular plate (312), the switching unit comprising: a housing And a power pneumatic passage 420 into which the main pneumatic pressure enters is extended from one side to the other side and the injection holes 320 of the upper and lower fixing plates 310 and 312 (422, 424) formed so as to pass through the upper and lower air discharge holes (426, 428) from the other side to the other side, ; A power pneumatic passage 420, an upper and a lower pneumatic passages 422 and 424, an upper and a lower discharge holes 426, and an upper and a lower discharge passages 426 and 427. The power pneumatic passage 420 is connected to the pneumatic distribution member 410, The upper and lower air outlets 514 and 516 and the upper and lower air outlets 520 and 522 are formed so that the ends of the opening and closing holes 524 and 528 are communicated with each other, The pipe line opening and closing pin 526 repeatedly formed with the large diameter 526a closely contacting the inner diameter surface and the small diameter 526b smaller than the large diameter 526a reciprocates both ends of the opening and closing hole 524, And the upper and lower air outlets 514 and 516 and the power inlet 512 may be stopped to be connected to any one of the upper and lower air outlets 514 and 516 and the power inlet 512, The other small aperture 526b is stopped at any one of the lower and upper air outlets 516 and 514 and the lower and upper air outlets 522 and 520, When one of the air outlets 516 and 514 and the lower and upper air outlets 522 and 520 is opened, the section of the large diameter 526a moves downward and stops at any one of the upper air outlets 516 and 514. [ A master cylinder 510 which is maintained and closes any one of the upper air outlets 516 and 514; The pipe line opening and closing pin 526 of the master cylinder 510 is lowered or raised at the top dead center and the bottom dead center of the piston 206 and the power inlet 512 and the upper and the lower air outlet ports 514 and 516 The upper and lower fixing openings 310 and 312 are formed so as to open and close any one of the upper and lower air outlets 516 and 514 and the lower and upper air outlets 522 and 520, And a switching member which is respectively coupled with a structure symmetrically connected to the pump member (322).

The switching member is coupled to the coupling holes 322 of the upper and lower fixing plates 310 and 312 and the first coupling groove 612 is formed toward the housing 202, An upper and lower first coupling portions 610 and 620 having a first through hole 614 penetrating the housing 202 with an inner diameter smaller than that of the coupling groove 612;

The seat cushion 730 is inserted into the first engagement groove 612 and the first through hole 614 and reciprocates closely and vertically so that the seat cushion 730 is protruded and formed at an outer diameter so as to be stopped at a predetermined distance upon entry of the housing 202, Upper and lower switch rods 710 and 720 interfering with the through holes 614;

A second engaging groove 832 is formed toward the housing 202 and is coupled to the upper and lower first engaging portions 610 and 620. The lower end of the housing 202 The exhaust groove 834 is formed with an inner diameter smaller than that of the second engagement groove 832 toward the first engagement groove 612 from the exhaust groove 834 toward the second engagement groove 832 toward the second engagement groove 832, And the upper and lower second engaging portions 810 and 810 are formed with the air injection holes 812 toward the upper and lower first engaging portions 610 and 620 in the inner surface of the second engaging groove 832. [ (810) 820; Upper and lower end portions 910 and 920 coupled to the upper and lower second coupling portions 810 and 820 to close the second coupling groove 832; The seat cushion 730 is elastically supported between the first engagement groove 612 of the upper and lower first engagement portions 610 and 620 and the upper and lower second engagement portions 810 and 820, Upper and lower first elastic members 930 and 940 adapted to urge the switch rods 710 and 720 into the housing 202; A plurality of flow grooves 952 inserted into the second engaging grooves 832 of the upper and lower second engaging portions 810 and 820 to open and close the exhaust grooves 834, Openings 950, 960; The upper and lower opening and closing portions 950 and 960 are elastically supported between the second engaging recess 832 of the upper and lower second engaging portions 810 and 820 and the upper and lower end portions 910 and 920 A lower second elastic member 970 (980); Upper and lower first pneumatic paths 330 and 340 branching from the power pneumatic path 420 and passing through the outer diameter side of the upper and lower fixed disks 310 and 312; The first induction furnace is formed so as to pass through the upper and lower first engaging portions 610 and 620 so as to correspond to the air injection holes 812 on the lower surface of the upper and lower second coupling portions 810 and 820, (616); The upper and lower second pneumatic passages 350 (350) formed in the upper and lower fixed discs 310 and 312, respectively, connected to the upper and lower first pneumatic paths 330 and 340 and the first induction passage 616, 360; An exhaust passage 838 penetrating through the inner circumference of the exhaust groove 834 of the upper and lower second coupling portions 810 and 820 toward the lower surface; A second induction furnace 618 passing through the upper and lower first engaging portions 610 and 620 so as to be connected to the exhaust path 838; Upper and lower third pneumatic passages 370 and 380 formed to pass through the upper and lower fixed discs 310 and 312 to be connected to the second induction passage 618 at an outer diameter; The upper and lower fourth pneumatic passages 430 and 432 formed in the pneumatic distribution member 410 and connected to the upper and lower third pneumatic passages 370 and 380 and penetrating toward the master cylinder 510, Wow; The pneumatic pressure supplied to the upper and lower fourth pneumatic passages 430 and 432 is communicated with the upper and lower fourth pneumatic passages 430 and 432 in the master cylinder 510 through the opening and closing hole 524 And upper and lower fifth pneumatic passages 530 and 532 for guiding and lowering the pipeline opening and closing pin 526. [

The upper and lower switch rods 710 and 720 are formed so as to penetrate through the upper and lower switch rods 710 and 720 which are in contact with the bottom surface or the upper surface of the upper and lower opening and closing portions 950 and 960, 720) outer perforations (740); A second air hole 750 formed through the outer diameter of the upper and lower first coupling portions 610 and 620 in the inner diameter surface of the first coupling groove 612 of the upper and lower first coupling portions 610 and 620, ). ≪ / RTI >

The switching of the path of the pneumatic pressure supplied to the master cylinder by the switching rod by the pushing of the piston in the top dead center stroke and the downward stroke of the piston makes it possible to quickly switch the pneumatic pressure supplied to the housing of the pneumatic pump, The opening and closing of the pipeline can be smoothly performed. As a result, the reliability of the product can be improved by quickly and accurately switching the pneumatic pressure.

1 shows the overall structure of a pneumatic pump according to the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pneumatic pump.
3 is a cross-sectional view showing an operating state of operating a pipe line open / close plate of a master cylinder in a state where a piston of a pneumatic pump according to the present invention is positioned at a bottom dead center.
4 is a view showing an arrangement structure of second and third pneumatic paths, first and second guide paths, an air injection hole, and an exhaust path according to the present invention.
5 is a view showing an opening / closing part according to the present invention.
FIG. 6 is an enlarged view of FIG. 3; FIG.
FIG. 7 is an enlarged view of FIG. 3B. FIG.
8 is a sectional view showing a path through which the main air pressure is supplied in a state where the piston of the pneumatic pump according to the present invention is located at the top dead center.
9 is a sectional view showing an operating state of operating a pipe line open / close plate of a master cylinder in a state where the piston of the pneumatic pump according to the present invention is located at the top dead center.
Fig. 10 is an enlarged view of Fig. 9C. Fig.
Fig. 11 is an enlarged view of Fig. 9D. Fig.

Hereinafter, the highly viscous pneumatic pump 200 will be schematically described with reference to FIG. 1, and then the configuration and operation of the switching unit of the high viscosity pneumatic pump 200 according to the present invention will be described with reference to FIGS. 2 to 5 do.

A pneumatic pump 200 is installed in the upper frame 110 and an up-down pneumatic cylinder 120 for vertically moving the upper frame 110 up and down is attached to the upper frame 110, The pneumatic pump 200 installed and fixed to the upper frame 110 can be raised and lowered vertically.

An adhesive agent container 132 containing the adhesive agent 130 is placed below the pneumatic pump 200 and a sealing member 140 inserted into the inner diameter of the adhesive agent container 132 to keep the inside of the container in an airtight state Lt; / RTI >

A sealing band 142 made of an elastic rubber material is attached to the circumferential surface of the sealing member 140 so as to be in contact with the inner diameter of the adhesive container 132. In the center of the sealing member 140, The piston rod 206 reciprocating by the piston 200 is engaged and interlocked with the adhesive 130 held in the adhesive container 132 to be sucked into the sealant outlet 150

2, the upper and lower fixing plates 310 and 312 are coupled to the upper and lower ends of the hollow cylindrical housing 202 and the upper and lower fixing plates 310 and 312 are coupled to each other. The injection holes 320 are formed in the upper and lower fixing plates 312 and 312 so that the injection holes 320 are formed in a straight line from an outer diameter surface of the upper and lower fixing plates 310 and 312 to a certain inner depth, The injection hole 320 is formed so as to be bent downward or upward toward the inside of the injection hole 202.

A piston 206 is installed on the inner side of the housing 202 so as to move upward and downward in a state of being closely contacted to an inner diameter of the piston 202. The piston 206 has a piston rod 204 inserted through the lower fixed plate 312 It is built on top.

A pneumatic distribution member 410 is coupled to a side surface of the housing 202. A main pneumatic pressure force is applied to the inside of the pneumatic pressure distribution member 410 to move the piston 206 inside the housing 202 up and down. An incoming power pneumatic path 420 is formed and the power pneumatic path 420 is formed in a direction in which it enters from the front surface to the ground as shown in Fig. 2, and then the other side, that is, the master cylinder 510).

The upper and lower pneumatic passageways 422 and 423 are connected to the injection holes 320 of the upper and lower fixed disks 310 and 312 from the other side of the pneumatic distribution member 410, ) 424 are respectively formed and connected to the injection hole 320 so that the main pneumatic pressure introduced into the power pneumatic path 420 is dialed through the master cylinder 510 so that the upper and lower pneumatic paths 422, The piston 206 is supplied to the inside of the housing 202 through the injection hole 320 of the upper and lower fixing plates 310 and 312 to lower or raise the piston 206.

In addition, upper and lower exhaust holes 426 and 428 are formed from the other side of the pneumatic member, that is, from the side to which the master cylinder 510 is coupled to the other side. As the piston 206 is lowered The air remaining in the lower portion of the piston 206 flows into the master cylinder 510 via the injection hole 320 and the lower pneumatic path 424 of the lower fixing plate 312 and then flows into the upper discharge hole 426 It is exhausted.

In contrast, when the piston 206 is moved up and down, air remaining on the piston 206 flows into the master cylinder 510 via the injection hole 320 and the upper pneumatic path 422 of the upper fixed disk 310 And is exhausted to the lower lower discharge hole 428. [

2, the master cylinder 510 coupled to one side of the pneumatic distribution member 410 has a vertically long opening / closing hole 524 formed therein. The opening / closing hole 524 The power inlet 512 is provided in the side surface in correspondence with the power pneumatic path 420 of the pneumatic distribution member 410 and the upper and lower pneumatic paths 422 and 424 and the upper and lower exhaust holes 426 and 428, Upper and lower air outlets 514 and 516, and upper and lower air outlets 520 and 522, respectively, so as to communicate with each other.

The pipe opening / closing pin 526 repeatedly formed with the large diameter 526a and the small diameter 526b is inserted into the inside of the opening and closing hole 524 to be raised and lowered. At this time, The pneumatic pressure supplied to the power inlet 512 may be supplied to any one of the upper and the lower air outlets 514 and 516 when the inlet 512 and the upper and the lower air outlets 514 and 516 are stopped, It is supplied as one.

The other small aperture 526b is stopped and held in any one of the lower and upper air outlets 516 and 514 and the lower and upper air outlets 522 and 520, The upper and lower pneumatic passages 422 and 424 and the upper and lower pneumatic passages 422 and 424 and the upper and lower pneumatic passages 422 and 424 as described above, The air inside the housing 202 exhausted to the outlets 514 and 516 can be discharged to the lower and upper discharge holes 426 through the lower and upper exhaust ports 522 and 520. [

The pipeline opening and closing pins 526 of the master cylinder 510 are lowered or lifted at the top dead center and the bottom dead center of the piston 206 so that the power inlet 512 and the upper and lower air outlets 514, The upper and lower fixing plates 310 and 312 are formed so as to open and close any one of the upper and lower air outlets 516 and 514 and the lower and upper air outlets 522 and 520, The switching member, which is respectively coupled to the coupling hole 322 in a symmetrical structure, will be described with reference to FIGS. 2 to 7 attached hereto.

The switching member has the same structure symmetrically provided on the upper and lower fixing plates 310 and 312 and interlocked with each other.

That is, the upper and lower first coupling portions 610 and 620 are coupled to the coupling holes 322 formed in the upper and lower fixing plates 310 and 312, respectively, and the upper and lower first coupling portions The first engaging groove 612 is formed with a first through hole 612 having an inner diameter smaller than that of the first engaging groove 612, 614 are formed through.

6, upper and lower second engaging portions 810 and 820 are coupled to the upper and lower first engaging portions 610 and 620. The upper and lower second engaging portions 810 and 820 are also coupled to the upper and lower first engaging portions 610 and 620, An exhaust groove 834 is formed in the bottom surface of the second engagement groove 832 toward the housing 202 with an inner diameter smaller than that of the second engagement groove 832 A second through groove 836 having an inner diameter smaller than that of the exhaust groove 834 is formed in the exhaust groove 834 toward the first engagement groove 612. In the inner surface of the second engagement groove 832, The air injection holes 812 are formed toward the lower first coupling portions 610 and 620, respectively.

The upper and lower second engaging portions 810 and 820 are coupled to the upper and lower end portions 910 and 920 such that the second engaging groove 832 is closed.

The upper and lower switch rods 710 and 720 are inserted into the first coupling groove 612 and the first through hole 614 of the upper and lower first coupling portions 610 and 620 to closely In order to allow the lower switch rods 710 and 720 to be stopped at a certain distance when the lower switch rods 710 and 720 enter the housing 202 when the upper switch rods 710 and 720 reciprocate, The seating jaw 730 is protruded and formed on the outer diameter of the upper and lower switch rods 710 and 720.

The upper and lower first elastic members 930 are provided between the first engagement grooves 612 of the upper and lower first engagement portions 610 and 620 and the upper and lower second engagement portions 810 and 820, The upper and lower first elastic members 930 and 940 move the upper and lower switch rods 710 and 720 to the inner side of the housing 202 .

A plurality of flow grooves 952 are vertically formed in the outer circumferential surface of the second engaging groove 832 of the upper and lower second engaging portions 810 and 820 so as to allow air to flow therethrough, The upper and lower opening and closing portions 950 and 960 are opened to open and close the upper and lower second engaging portions 810 and 820 and the upper and lower closing portions 910 and 910 of the upper and lower second engaging portions 810 and 820, The upper and lower elastic members 970 and 980 are inserted into the upper and lower elastic members 970 and 920 so that the upper and lower elastic members 970 and 980 can elastically support the upper and lower opening and closing parts 950 and 960, .

As shown in FIG. 3, the upper and lower first pneumatic passages 330 and 340 (see FIG. 3) are disposed in the power pneumatic passage 420 formed in the pneumatic distribution member 410, So that the main duct is branched and the main air pressure supplied to the power pneumatic passage 420 is branched.

The upper and lower first engaging portions 610 and 620 are provided with upper and lower first engaging portions 610 and 620 so as to correspond to the air injection holes 812 on the lower surface of the upper and lower second engaging portions 810 and 820, The upper and lower first pneumatic passages 330 and 340 of the air pressure distribution member 410 and the first induction passage 616 form the upper and lower first pneumatic passages 330, Upper and lower second air passages 350 and 360 are respectively formed in the upper and lower stationary plates 310 and 312 so that the first and second guide paths 340 and 616 are connected to each other.

6, an exhaust passage 838 is formed to pass through the inner surface of the exhaust groove 834 of the upper and lower second coupling portions 810 and 820 toward the lower surface. In FIG. 6, The exhaust path 838 is shown by a hatch line, and since the portion overlapping the air injection hole 812 by the view of the sectional view, the figure of the refracted portion is not represented.

Here, a second induction passage 618 is formed through the upper and lower first engaging portions 610 and 620 so as to be connected to the exhaust passage 838. As shown in the drawing, The first guide passage 618 is also shown as a line, and the second guide passage 618 is disposed in the vicinity of the first guide passage 616, Respectively.

The upper and lower third pneumatic passages 370 and 380 are formed so as to be connected to the second induction passage 618 at the outer diameter of the upper and lower stationary disks 310 and 312, 3 pneumatic passages 370 and 380 are also shown to overlap with the upper and lower second pneumatic passages 350 and 360 like the exhaust passages 838 and the second induction passages 618, So that the upper and lower third pneumatic passages 370 and 380 can be shown by silver lines on the upper part of the upper and lower second pneumatic passages 350 and 360.

Therefore, the exhaust passage 838, the second induction passage 618, the upper and lower third pneumatic passages 370 and 380 shown in Figs. 3, 6, 7 and 9 are connected to the air injection hole 812, The first induction furnace 616, and the upper and lower second pneumatic passages 350 and 360. Therefore, the present invention is not limited to the right of the present invention.

In addition, the constitutional relationship between them is more clearly understood with reference to FIG. 4, and a detailed description thereof will be omitted.

One of the pneumatic distribution members 410 is connected to the upper and lower third pneumatic passages 370 and 380 while the other is connected to the upper and lower third pneumatic passages 370 and 380, Thereby forming the fourth pneumatic passage 430, 432.

The upper and lower fourth pneumatic passages 530 and 532 are formed in the master cylinder 510 so as to communicate with the upper and lower fourth pneumatic passages 430 and 432 so that the upper and lower fourth pneumatic passages 430 ) 432 is guided to the opening / closing hole 524 so that the pipe line opening / closing pin 526 can be moved up and down.

The upper and lower switch rods 710 and 720 which are in contact with the bottom surface or the top surface of the upper and lower opening and closing portions 950 and 960, The first lancet hole 740 is formed so as to penetrate through the outer circumferential surface 720 of the upper and lower first engaging portions 610 and 620 and the upper and lower first engaging portions 610 and 620 are formed on the inner circumferential surface of the first engaging groove 612 of the upper and lower first engaging portions 610 and 620, When the air injected into the air injection hole 812 is formed through the second air hole 750 toward the outer diameter of the first and second air ports 610 and 620 and is not completely blocked by the opening and closing part, 740 and the second air hole 750 to be exhausted.

The upper and lower opening and closing portions 950 and 960 may be provided on the bottom or top surface with packing portions 982 to close and close the exhaust groove 834 as shown in FIG. The upper and lower ends of the exhaust groove 834 are formed with convexly protruding portions 984 so that the packing portion and the protruding portion of the upper and lower opening and closing portions 950 and 960 are brought into tight contact with each other to maintain a close closed state desirable.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 2 to 11. FIG.

First, as shown in FIG. 2, when the main air pressure is supplied through the power pneumatic path 420, the air pressure is branched from the main air pressure through the upper and lower first air pressure paths 330 and 340.

2 shows a state in which the pipe line opening and closing pin 526 of the master cylinder 510 is initially raised and lowered so that a small diameter 526b located at the center of the pipe line opening and closing pin 526 is inserted into the power inlet 512 and the upper air outlet 514 to connect the power inlet 512 to the upper air outlet 514, the upper pneumatic passage 422, the injection hole 320 of the upper fixing plate 310, The initial state of the pipe line opening / closing pin 526 of the master cylinder 510 according to the present invention may be an elevated state as shown in FIG. 2, The present invention is not intended to be limited by the following description, assuming that the state in which the piping opening / closing pin 526 is raised and lowered is an initial state for the purpose of explaining the operation of the present invention.

That is, when pneumatic pressure is supplied to the upper portion of the housing 202 to lower the piston 206 as described above, the pneumatic pressure branched from the power pneumatic path 420 is supplied to the upper and lower first pneumatic paths 330 The upper and lower second pneumatic paths 350 and 360 of the upper and lower fixing plates 310 and 312 and the first induction passage 616 of the upper and lower first engaging portions 610 and 620 The air is supplied from the air injection hole 812 of the upper and lower second coupling portions 810 and 820 to the second coupling groove 832 of the upper and lower second coupling portions 810 and 820 via the coupling holes 810 and 820.

2, the piston 206 and the upper and lower switch rods 710 and 720 are separated from each other when the piston 206 is lowered at the top dead center, so that the upper and lower first elastic members The upper and lower switch rods 710 and 720 are protruded toward the inside of the housing 202 by the upper and lower second engaging portions 810 and 820. At this time, The upper and lower opening and closing portions 950 and 960 inserted into the upper and lower second engaging portions 810 and 820 are elastically supported by the upper and lower second elastic members 970 and 980, Even if the pneumatic pressure supplied to the air injection hole 812 flows along the flow grooves 952 of the upper and lower opening and closing portions 950 and 960 as well as the exhaust grooves 834 The pneumatic pressure branched at the power pneumatic path 420 does not act to raise or lower the pipeline opening and closing pin 526 of the master cylinder 510 The.

The pneumatic pressure supplied to the power pneumatic path 420 is continuously supplied to the upper fixing disk 310 as described above because the power inlet 512 of the master cylinder 510 is connected to the upper air inlet 514, The air pressure is supplied from the upper portion of the piston 206 through the injection hole 320 of the piston 206.

At this time, when the piston 206 is lowered, the air inside the housing 202 remaining at the lower portion of the piston 206 passes through the injection hole 320 and the lower pneumatic path 424 of the lower fixed disk 312 The small diameter 526b located at the lower portion of the pipe line opening and closing pin 526 connects the lower air outlet 516 and the lower exhaust hole 516 of the master cylinder 510 The air exhausted to the lower air outlet port 516 is exhausted to the outside through the lower exhaust hole 428 of the air pressure distribution member 410 via the lower exhaust hole.

3, when the piston 206 is completely lowered from the inside of the housing 202 to be positioned at the bottom dead center, as shown in FIG. 7, the lower switch rod 720 is rotated by the piston 206 The lower end of the lower switch rod 720 presses the upper surface of the lower opening and closing part 960 so that the lower second elastic member 980 compresses the lower first elastic member 940 The lower opening / closing portion 960 can be spaced apart from the exhaust groove 834.

As a result, when the piston 206 is lowered and the lower switch rod 720 is lowered, the exhaust groove 834 is opened. At this time, the pneumatic pressure continuously supplied to the air injection hole 812, Flows into the exhaust groove (834) along the flow groove (952) formed on the outer surface of the lower opening / closing part (960).

Since the inner diameter of the exhaust groove 834 is larger than the inner diameter of the second through hole 836, the outer diameter of the lower switch rod 720 reciprocating in the second through hole 836 and the inner diameter of the exhaust groove 834 The air introduced into the exhaust passage 838 is supplied to the exhaust passage 838 formed in the inner circumferential surface of the exhaust groove 834 and the second induction passage 618 of the lower first engaging portion 620 connected to the exhaust passage 838 The lower third pneumatic passage 380 of the lower fixing plate 312, the lower fourth pneumatic passage 432 of the air pressure distribution member 410 and the lower fifth pneumatic passage 532 of the master cylinder 510 .

As shown in FIGS. 2 and 3, the upper and lower fifth pneumatic passages 530 and 532 are connected to the upper and lower pneumatic passages 530 through the open / close holes 524 And the lower fifth pneumatic passage 532 is connected to the upper end of the opening / closing hole 524 in order to lower the pipe passage opening / closing pin 526. The lower / And a balloon is supplied from the upper part of the opening / closing hole 524.

The present invention is not limited to the structure in which the upper and lower fifth pneumatic passages 530 and 532 communicate with each other from the upper portion to the lower portion and from the lower portion to the upper portion, 530) 532 can move up and down the channel opening / closing pin 526, the present invention is not limited to this structure, and various channels may be provided.

Accordingly, the pneumatic pressure supplied to the lower fourth pneumatic passage 432 and the lower fifth pneumatic passage 532 is supplied to the upper end of the opening / closing hole 524 as shown in Fig. 2, As shown in FIG.

As shown in FIG. 3, when the pipe opening / closing pin 526 descends, the small diameter 526b located at the center of the pipe opening / closing pin 526 connects the power inlet 512 and the lower air outlet 516, It is possible to switch the pipeline so that pneumatic pressure can be supplied to the lower portion of the piston 206 through the pneumatic passage 420, the power inlet 512, the lower outlet, the lower pneumatic pressure, and the injection hole 320 of the lower stationary plate 312 .

At this time, the upper small hole 526b of the duct opening / closing pin 526 is stopped by the upper air outlet 514 and the upper air outlet 520 to connect the upper air outlet 514 and the upper air outlet 520 The air remaining on the upper portion of the piston 206 while the piston 206 ascends and descends passes through the injection hole 320 of the upper fixing plate 310 and the upper pneumatic passage 422 through the upper outlet 520 and the upper outlet 520 So that it can be exhausted to the outside.

When the piston 206 is moved up and away from the lower switch rod 720 by the air pressure supplied to the injection hole 320 of the lower fixed plate 312, The lower opening and closing part 960 is lifted and lowered by the lower second elastic member 980 while being lifted by the lower elastic member 940 so that the exhaust groove 834 is closed and thus branched at the power pneumatic path 420 as shown in FIG. The air pressure is no longer able to exert any action on the switching member.

Therefore, when the piston 206 is raised and lowered by the pneumatic pressure supplied to the power pneumatic path 420 and then the piston 206 is lifted up to the top dead center as shown in FIG. 8, The upper switch rod 710 is moved up and down while the upper switch rod 710 is lifted and lowered while the upper switch lever 710 is lifted and lowered while the upper first elastic member 930 is lifted and lowered as shown in FIG. The member 970 is compressed.

Accordingly, the pneumatic pressure supplied to the lower first pneumatic passage 340 among the pneumatic pressures branched from the power pneumatic path 420 to the upper and lower first pneumatic paths 330 and 340 passes through the lower switch rod The pneumatic pressure branched to the upper first pneumatic passage 330 is maintained in the state where the supply of the air is stopped because the lower opening and closing portion 960 is in a state in which the exhaust groove 834 is closed, 9, the upper second pneumatic passage 350 of the upper fixing plate 310, the first induction passage 616 of the upper first coupling portion 610, the air injection holes 812 of the upper second coupling portion 810 The second induction passage 618 of the upper first coupling portion 610 through the second coupling groove 832 of the upper second coupling portion 810, the exhaust groove 834 and the exhaust passage 838, Is supplied to the upper fifth pneumatic passage 530 of the master cylinder 510 via the upper third pneumatic passage 370 of the upper fixed disk 310 and the upper fourth pneumatic passage 430 of the air pressure branch member, Is supplied to the lower end of the opening / closing hole (524) , Which will thereby lifting the duct opening and closing member.

When the duct opening / closing member ascends and descends, the small diameter 526b at the center connects the power inlet 512 and the upper air outlet 514, so that the pneumatic pressure supplied to the power inlet 512 is returned to the upper air pressure To the injection hole 320 of the upper fixing plate 310 so that the air pressure is supplied from the upper portion of the piston 206 to lower the piston 206 again.

As described above, according to the present invention, not only the reciprocating operation of moving the piston 206 up and down with the main air pressure but also the switching member is operated by using the air pressure branched from the main air pressure, , The supply path of the main air pressure can be switched.

6, when the packing portion of the upper and lower opening and closing portions 950 and 960 is worn or damaged, the pneumatic pressure supplied to the air injection hole 812 is leaked to the exhaust groove 834, The air leaking into the exhaust groove 834 is guided by the first leakage holes 740 of the upper and lower hoisting and lowering bars and the first and second holes 740 formed in the first engagement grooves 612 of the upper and lower first engagement portions 610, 2 air leaks into the outside through the air holes 750 so that the air leaks are supplied to the master cylinder 510 through the exhaust path 838 to move the pipeline opening and closing pin 526 in a slightly raised and lowered state, , The sizes of the lower air outlets 514 and 516 are reduced, thereby preventing the supply pressure from being reduced in advance.

Accordingly, the problem that the reciprocating motion of the channel opening / closing pin 526 is not smooth due to the release of the pneumatic pressure supplied to the switching member is eliminated, and the switching operation of the pneumatic pressure is performed quickly and accurately, thereby improving the reliability of the product It has the effect of being able to.

110: upper frame 120: pneumatic cylinder
130: Adhesive 132: Adhesive container
140: sealing member 142: sealing band
150: sealant discharge hole 200: pneumatic pump
202: housing 204, 206: piston, piston rod
310, 312: upper and lower fixing plates 320: injection hole
322: coupling hole 330, 340: upper and lower first pneumatic
350, 360: upper and lower second pneumatic lines 370, 380: upper and lower third pneumatic lines
410: Pneumatic dispensing member 420: Power pneumatic
422, 424: upper and lower pneumatic lines 426, 428: upper and lower exhaust holes
430, 432: upper and lower fourth pneumatic rods
510: master cylinder 512: power inlet
514, 516: upper and lower air outlets 520, 522: upper and lower exhaust ports
524: opening / closing ball 526: pipe opening / closing pin
530, 532: upper and lower fifth pneumatic
610, 620: upper and lower first engaging portions 612: first engaging groove
614: first through hole 616: first induction furnace
618: second induction furnace
710, 720: upper and lower switch rods 730:
740: first lug pore 750: second lug pore
810, 820: upper and lower second coupling parts 812: air injection holes
832: second coupling groove
834: exhaust groove 836: second through groove
838: by way of exhaust
910, 920: upper and lower end portions 930, 940: upper and lower first elastic members
950, 960: upper and lower opening and closing parts 952:
970, 980: upper and lower second elastic members
982: Packing part 984:

Claims (3)

delete Upper and lower fixing plates 310 and 312 which are coupled to upper and lower ends of the cylindrical housing 202 and formed with injection holes 320 so as to communicate with the inside of the housing 202, A piston 206 axially reciprocatingly mounted on an upper end of a piston rod 204 penetratingly inserted into a lower stationary plate 312, a piston 206 coupled to a side surface of the housing 202, The upper and lower pneumatic passageways 422 and 424 penetrate from the other side to the injection holes 320 of the upper and lower fixed disks 310 and 312, respectively, A pneumatic distribution member 410 formed with upper and lower exhaust holes 426 and 428 so as to pass from the other side to the other side; The power pneumatic passage 420, the upper and lower pneumatic pressures ( The upper and lower air outlets 514 and 516 and the upper and lower air outlets 520 and 422 are connected to each other so that the ends of the upper and lower air outlets 422 and 424, A pipe line opening and closing pin 526 repeatedly formed with a large diameter 526a that is in close contact with the inner diameter surface of the opening and closing hole 524 and a small diameter hole 526b that is smaller than the large diameter 526a is formed in the opening and closing hole 524, One of the upper and lower air outlets 514 and 516 is connected to one of the upper and lower air outlets 514 and 516 so as to be connected to one of the upper and lower air outlets 514 and 516, 516 and the power inlet 512 are communicated with each other and the other small aperture 526b section is connected to one of the lower and upper air outlets 516 and 514 and the lower and upper air outlets 522 and 520 The upper and lower air outlets 516 and 514 and the lower and upper air outlets 522 and 520 are opened so that the range of the large diameter 526a is lower than that of the upper air outlets 516) 514 among And a master cylinder (510) which is held at one of the upper and lower air outlets (516) and (514) and closes any one of the upper air outlets (516) and (514), the switching unit of the high viscosity pneumatic pump (200)
The pipe line opening and closing pin 526 of the master cylinder 510 is lowered or raised at the top dead center and the bottom dead center of the piston 206 and the power inlet 512 and the upper and the lower air outlet ports 514 and 516 The upper and lower fixing openings 310 and 312 are formed so as to open and close any one of the upper and lower air outlets 516 and 514 and the lower and upper air outlets 522 and 520, And a switching member respectively coupled to a structure symmetrically formed on the base member (322);
Wherein the switching member comprises:
The first engaging groove 612 is coupled to the engaging hole 322 of the upper and lower fixing plates 310 and 312 and is directed toward the housing 202. The first engaging groove 612 is smaller than the first engaging groove 612 An upper and lower first coupling portions 610 and 620 having a first through hole 614 penetrating through the housing 202 with an inner diameter;
The seat cushion 730 is inserted into the first engagement groove 612 and the first through hole 614 and reciprocates closely and vertically so that the seat cushion 730 is protruded and formed at an outer diameter so as to be stopped at a predetermined distance upon entry of the housing 202, Upper and lower switch rods interfering with the through holes 614;
A second engaging groove 832 is formed toward the housing 202 and is coupled to the upper and lower first engaging portions 610 and 620. The lower end of the housing 202 The exhaust groove 834 is formed with an inner diameter smaller than that of the second engagement groove 832 toward the first engagement groove 612 from the exhaust groove 834 toward the second engagement groove 832 toward the second engagement groove 832, And the upper and lower second engaging portions 810 and 810 are formed with the air injection holes 812 toward the upper and lower first engaging portions 610 and 620 in the inner surface of the second engaging groove 832. [ (810) 820;
Upper and lower end portions 910 and 920 coupled to the upper and lower second coupling portions 810 and 820 to close the second coupling groove 832;
The seat cushion 730 is elastically supported between the first engagement groove 612 of the upper and lower first engagement portions 610 and 620 and the upper and lower second engagement portions 810 and 820, Upper and lower first elastic members 930 and 940 adapted to urge the switch rods 710 and 720 into the housing 202;
A plurality of flow grooves 952 inserted into the second engaging grooves 832 of the upper and lower second engaging portions 810 and 820 to open and close the exhaust grooves 834, Openings 950, 960;
The upper and lower opening and closing portions 950 and 960 are elastically supported between the second engaging recess 832 of the upper and lower second engaging portions 810 and 820 and the upper and lower end portions 910 and 920 A lower second elastic member 970 (980);
Upper and lower first pneumatic paths 330 and 340 branching from the power pneumatic path 420 and passing through the outer diameter side of the upper and lower fixed disks 310 and 312;
The first induction furnace is formed so as to pass through the upper and lower first engaging portions 610 and 620 so as to correspond to the air injection holes 812 on the lower surface of the upper and lower second coupling portions 810 and 820, (616);
The upper and lower second pneumatic passages 350 (350) formed in the upper and lower fixed discs 310 and 312, respectively, connected to the upper and lower first pneumatic paths 330 and 340 and the first induction passage 616, 360;
An exhaust passage 838 penetrating through the inner circumference of the exhaust groove 834 of the upper and lower second coupling portions 810 and 820 toward the lower surface;
A second induction furnace 618 passing through the upper and lower first engaging portions 610 and 620 so as to be connected to the exhaust path 838;
Upper and lower third pneumatic passages 370 and 380 formed to pass through the upper and lower fixed discs 310 and 312 to be connected to the second induction passage 618 at an outer diameter;
The upper and lower fourth pneumatic passages 430 and 432 formed in the pneumatic distribution member 410 and connected to the upper and lower third pneumatic passages 370 and 380 and penetrating toward the master cylinder 510, Wow;
The pneumatic pressure supplied to the upper and lower fourth pneumatic passages 430 and 432 is communicated with the upper and lower fourth pneumatic passages 430 and 432 in the master cylinder 510 through the opening and closing hole 524 And upper and lower fifth pneumatic passages (530) and (532) having a channel for guiding and lowering the pipeline opening and closing pin (526). 3. The method of claim 2,
The upper and lower switch rods 710 and 720 are formed so as to penetrate through the upper and lower switch rods 710 and 720 which are in contact with the bottom surface or the upper surface of the upper and lower opening and closing portions 950 and 960, A first lancet hole 740 formed to pass through an outer diameter;
A second air hole 750 formed through the outer diameter of the upper and lower first coupling portions 610 and 620 in the inner diameter surface of the first coupling groove 612 of the upper and lower first coupling portions 610 and 620, Further comprising a pump (200) connected to the high-viscosity pump (200).

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