TWI494507B - Cam type fluid discharge device - Google Patents

Description

Cam type fluid discharge device

The present invention relates to a discharge device, and more particularly to a rotation and reciprocating movement of a piston (Plunger) by a single cam mechanism including a single drive portion and two cam portions, so that a quantitative fluid can be discharged without leakage. A cam-type fluid discharge device that simply adjusts the discharge amount.

Recently, in the electronic component industry, devices for discharging a fluid such as a functional illuminator such as an LED, a cream solder, and an adhesive in a predetermined amount have been developed and used.

Fig. 1 shows the general structure of a piston type fluid discharge device as one of such fluid discharge devices.

The piston type fluid discharge device includes: a casing 1; a cylinder 2 disposed inside the casing 1; a piston 4 that reciprocates up and down and rotates inside the cylinder 2; and a nozzle mechanism 5 installed at a lower end of the cylinder 2.

The piston 4 rises from the bottom dead center according to a driving unit (not shown), and the suction port 2-1 of the flow path formed on the cylinder 2 side at this time corresponds to the notch portion 4-1 formed in the piston 4. The fluid flows into the suction port 2-1.

Until the piston 4 reaches the top dead center, the piston 4 rotates so that its notch portion 4-1 no longer corresponds to the suction port 2-1 of the cylinder 2, whereby the fluid does not flow into the inside of the flow path of the cylinder 2. At this time, the discharge port 2-2 of the flow path of the cylinder 2 also does not correspond to the notch portion 4-1 of the piston 4 (that is, the inflow of the fluid is completed).

Thereafter, according to the rotation of the piston 4, the notch portion 4-1 of the piston 4 corresponds to the discharge port 2-2 of the flow path of the cylinder 2 (the state of Fig. 1), and as the piston 4 descends, the inside of the cylinder 2 is in the flow path. The fluid is pressed by the piston 4 and discharged through the discharge port 2-2 via the nozzle assembly 5 mounted at the lower end of the cylinder 2. The fluid is continuously discharged until the piston 4 reaches the bottom dead center. At this time, the notch portion 4-1 of the piston 4 does not correspond to the suction port 2-1 of the cylinder 2.

When the piston reaches the bottom dead center, the discharge of the fluid is ended, and the notch portion 4-1 of the piston 4 does not correspond to the discharge port 2-2 of the cylinder 2. Thereafter, the ascending and rotating of the piston 4 is performed, whereby the inflow and discharge of the fluid as described above are repeatedly performed.

A feature of this type of piston fluid discharge device is that it does not include a valve for controlling fluid flow by constituent elements. Since there is no valve, it is possible to eliminate the variation factor caused by the valve, and it is possible to transfer and discharge the fluid in an ideal state.

Further, the piston type fluid discharge device having the structure shown in Fig. 1 has an advantage in that it is not necessary to provide a pump which may deteriorate various fluids.

However, in the piston type fluid discharge device, since the piston performs continuous rotation, it is necessary to complete the end of suction and discharge in an instant. In this state, fluid located inside the cylinder flow path may leak through the suction port and the discharge port. In particular, when the fluid is discharged at a high pressure in order to increase the discharge amount, such a fluid leakage amount cannot be ignored.

In order to solve the above problem, a structure in which two driving portions are used to rotate and reciprocate a piston is used. However, since such a structure utilizes two driving portions, it is difficult to spatially arrange components in the interior of the device. Set, but also increased manufacturing costs.

The present invention has been made in view of the above problems in the prior art, and an object thereof is to provide a single cam mechanism including a single driving portion and two cam portions to accurately realize rotation and reciprocating movement of a piston, thereby enabling leakage-free operation. A cam-type fluid discharge device that discharges a predetermined amount of fluid.

Further, an object of the present invention is to provide a cam type discharge device which is configured to adjust the amount of vertical movement of a piston so that the discharge amount of the fluid can be easily adjusted.

In order to achieve the above object, a cam type fluid discharge device according to an embodiment of the present invention includes: a cam mechanism including a rotation shaft rotatably provided to the cabinet and a first cam portion and a second cam portion rotatable together with the rotation shaft The up-and-down reciprocating drive unit is disposed on one side of the cam mechanism, and is vertically rotatable in conjunction with the first cam unit; the piston portion is vertically movable according to the rotation of the vertical reciprocating drive unit, and the second cam portion is configured according to the cam mechanism. Further, the nozzle unit is disposed at a lower portion of the piston portion, and the fluid flows in and out according to the vertical movement of the piston portion, and the fluid inlet and the discharge port are opened and closed according to the rotational movement of the piston portion.

The first cam portion for constituting the cam mechanism may include a cylindrical body disposed on the rotating shaft; a single groove formed on the outer peripheral surface of the body. The groove includes: a top dead center and a bottom dead center, respectively formed on a region corresponding to the two ends of the diameter passing through the center of the end surface of the body; and two curved portions for respectively connecting the top dead center and the bottom dead center . Up and down reciprocating drive The roller accommodated in the groove is included, so that the up-and-down reciprocating driving portion repeatedly performs the downward rotation and the upward rotation according to the rotation of the first cam portion.

The upper and lower reciprocating driving portion may include: a link member rotatably mounted on the casing around the central axis, and a roller housed in the groove of the first cam portion; the flat plate, the first end portion rotatably Mounted in the casing, the second terminal portion is rotatably mounted to the link member. According to this configuration, according to the rotation of the first cam portion of the cam mechanism, the link member is rotated about the central axis, and the flat plate is rotated about the second end portion in accordance with the rotation of the link member to move the piston portion up and down.

The link member may include: a first joint portion and a second joint portion respectively rotatably disposed on the casing according to a central shaft mounted on the side; a connecting member for connecting the first joint portion and the second joint portion; and extending The piece extends from the front end of the connector and has a roller mounted on the side.

The up-and-down reciprocating drive portion may further include a length adjustment unit for adjusting a position of the flat plate relative to the link member. The length adjusting unit comprises: a flat plate driving portion mounted on the casing; and a casing, one end of which is inserted into the driving shaft provided with the flat plate driving portion and the other end of which is connected to the flat plate. The housing is moved toward the link member or the flat plate driving portion in accordance with the driving of the drive shaft based on the interaction of the threaded portion formed on the outer peripheral surface of the drive shaft and the inner peripheral surface of the housing. The two end portions of the hinge shaft provided on the first end portion of the flat plate are movably located in the guide grooves formed in the casing, respectively. The two end portions of the hinge shaft provided at the second end portion are movably located in guide grooves formed in the first joint portion and the second joint portion of the link member, respectively. According to the movement of the housing of the adjustment unit, the link member is guided along the guide groove of the casing and the first joint portion and the second joint portion The guide groove moves.

The piston portion may include: a rotating shaft that is vertically and rotatably disposed in the outer casing; a coupler coupled to the lower end of the rotating shaft; and a separating member fixed to the lower end of the coupler for separating the space of the outer casing; the piston, Fixed at a lower end portion of the coupler, penetrates the separating member to realize fluid inflow and discharge in the nozzle unit, and is used for opening and closing the inflow port and the discharge port; and a spring disposed around the piston at a lower portion of the separating member and used for Restore the piston that moves down.

A planar spherical bearing can be mounted on the upper end of the rotating shaft. The flat surface portion of the planar spherical bearing is in contact with the lower surface of the flat plate of the upper and lower reciprocating driving portions, and the spherical surface of the planar spherical bearing is supported by a hemispherical concave surface formed on the upper end surface of the rotating shaft of the piston portion.

The lower end portion of the piston is formed with a notch portion which cuts the side surface by a predetermined depth, width and length (height), whereby the inflow and discharge of the fluid and the convection inlet and the discharge port can be performed in the nozzle unit through the notch portion. Opening and closing.

The nozzle unit for performing fluid discharge may include: a block disposed at a lower end of the outer casing of the piston portion; and a nozzle coupled to a lower end of the block. The block has an inner space for accommodating the piston of the piston portion inside, and an inflow port and a discharge port respectively communicating with the inner space are formed on both sides of the inner space, and the inflow port is connected to the external fluid storage portion, and the discharge port Connected to the nozzle.

The cam-type fluid discharge device may further include a power transmission portion disposed between the cam mechanism and the piston portion, and selectively transmitting a rotational force of the second cam portion of the cam mechanism to the piston of the piston portion.

The power transmission portion may include a rotary shaft rotatably mounted to the casing, and a power transmission member mounted to the rotary shaft of the power transmission portion and coupled to the second cam portion of the cam mechanism. The power transmission member includes a disk-shaped flat plate through which a rotary shaft of the power transmission portion is inserted at a central portion, and a plurality of rollers rotatably provided on the disk-shaped flat plate, the plurality of rollers having the same angular interval from each other. The second cam portion includes a disk-shaped panel that is attached to a rotating shaft provided to the casing, and the outer peripheral surface corresponds to an outer peripheral surface of the plurality of rollers of the power transmission portion. The disc-shaped panel includes a convex portion having a curved hemispherical shape and protrudes from the outer peripheral surface of the disc-shaped panel to enter the space between the plurality of rollers of the power transmission member. When the roller of the upper and lower reciprocating driving portion is located at the top dead center and the bottom dead center of the groove of the first cam portion, the outer circumferential surface of the disk-shaped panel of the second cam portion corresponds to the outer circumferential surface of the plurality of rollers of the power transmission member, Thereby, the rotational force of the second cam portion is not transmitted to the piston portion.

The power transmission portion may include a rotary shaft rotatably mounted to the casing, and a power transmission member mounted to the rotary shaft of the power transmission portion and coupled to the second cam portion of the cam mechanism. The power transmission member includes: a disk-shaped flat plate through which a rotary shaft of the power transmission portion is penetrated at a central portion; a plurality of first rollers and a plurality of second rollers respectively rotatably disposed on the disk-shaped flat plate, and a plurality of first rollers The same angular spacing from each other, the plurality of second rollers have the same angular spacing from each other. The second cam portion of the cam mechanism that is interlocked with the power transmission member includes a first disc-shaped panel and a second disc-shaped panel that are attached to the rotating shaft provided to the casing at predetermined intervals. The outer peripheral surface of the first disc-shaped panel corresponds to the outer peripheral surface of the first roller of the power transmitting member, and the outer peripheral surface of the second disc-shaped panel and the second roller of the power transmitting member The outer peripheral surface corresponds. The first disc-shaped panel includes: a convex portion having a curved hemispherical shape protruding from an outer peripheral surface of the first disc-shaped panel to enter a space between the plurality of first rollers of the power transmitting member; The disc-shaped panel includes a convex portion having a curved hemispherical shape and protrudes from the outer peripheral surface of the second disc-shaped panel to enter a space between the plurality of second rollers of the power transmission member. When the roller of the upper and lower reciprocating driving portion is located at the top dead center and the bottom dead center of the groove of the first cam portion, the outer peripheral surface of the first disc-shaped panel of the second cam portion and the outer peripheral surface of the first roller of the power transmitting member Correspondingly, the outer peripheral surface of the second disk-shaped panel of the second cam portion corresponds to the outer peripheral surface of the second roller of the power transmission member, so that the rotational force of the second cam portion is not transmitted to the piston portion.

The disc-shaped flat plate for constituting the power transmission member in the power transmission portion is formed with a first gear portion on the outer peripheral surface, and a disc-shaped flat plate formed on the power transmission member is formed on the outer peripheral surface of the rotation shaft of the piston portion. a second gear portion that the upper first gear portion meshes with.

According to the fluid discharge device of the present invention, the rotation and reciprocation of the piston can be accurately realized by a single cam mechanism including a single drive portion and two cam portions, so that a certain amount of fluid can be discharged without leakage.

Further, since the structure has a structure in which the length of the flat plate with respect to the link member can be easily adjusted, the effect of easily adjusting the discharge amount of the fluid according to the object can be achieved.

Hereinafter, the fluid discharge device of the embodiment of the present invention will be described in detail with reference to the accompanying drawings. Set.

2 is a front cross-sectional view of a fluid discharge device in accordance with an embodiment of the present invention. Figure 3 is a plan view of Figure 2. Fig. 4 is a cross-sectional view taken along line A-A of Fig. 2;

Each component of the fluid discharge device according to the embodiment of the present invention is disposed in a casing in which the driving portion is mounted.

The fluid discharge device includes: a cam mechanism 100 including a rotating shaft 101 and a first cam portion 110 and a second cam portion 120 that rotate in connection with the rotating shaft 101; an upper and lower reciprocating driving portion 200, and a first cam portion 110 of the cam mechanism 100 The power transmission unit 300 is interlocked with the second cam portion 120 of the cam mechanism 100; the piston portion 400 is vertically reciprocated and rotated according to the vertical reciprocating drive unit 200 and the power transmission unit 300; the nozzle unit (Fig. 2 to Fig. 6) Not shown, 500) in FIGS. 7a to 7d are disposed at the lower end of the piston portion 400.

Hereinafter, description will be made by distinguishing the configuration and function of each component.

Cam mechanism 100

The cam mechanism 100 includes a rotating shaft 101, and a first cam portion 110 and a second cam portion 120 that are respectively mounted (or formed) on the outer peripheral surface of the rotating shaft 101.

The rotary shaft 101 is rotatably attached to the casing 10 via a bearing B or the like, and one end thereof is coupled to a drive shaft of the rotary shaft drive unit 20 mounted to the outside of the casing 10.

The first cam portion 110 is attached to the lower outer peripheral surface of the rotating shaft 101. The first cam portion 110 includes a cylindrical body 111 and is formed in the body A single groove 112 of the outer peripheral surface. The groove 112 includes: a top dead center T and a bottom dead center L respectively formed in a facing region of the main body 111 (ie, a region corresponding to two ends of the diameter passing through the center of the end surface); and a top dead center respectively connected Two curved parts with the bottom dead center.

The second cam portion 120 is mounted (formed) at a lower portion of the first cam portion 110. The second cam portion 120 is a cylindrical member. In FIG. 2, the second cam portion 120 is shown in a box shape for convenience, but its detailed structure is as shown in FIG.

The second cam portion 120 includes a first disc-shaped panel 121 and a second disc-shaped panel 122 that are mounted on the rotating shaft 101. The first and second disc-shaped panels 121 and 122 are vertically spaced apart by a predetermined distance, and two convex portions 121A, 121B and 122A and 122B which are convex in the radial direction are formed on the respective outer peripheral surfaces.

The two projections 121A, 121B and 122A, 122B of each of the disc-shaped panels 121, 122 are spaced apart from each other by a predetermined angle, and the outer peripheral surface thereof has a curved hemispherical shape.

Since the second cam portion 120 having the above configuration can be interlocked with the power transmission portion 300 to be described later, the rotational force of the rotary shaft drive unit 20 can be selectively transmitted to the piston 400.

Up and down reciprocating drive unit 200

The up-and-down reciprocating drive unit 200 is disposed on one side of the cam mechanism 100 and includes a link member 210 rotatably mounted to the cabinet 10 via a bearing or the like, and a roller 240 rotatably mounted to the link member 210. a plate 220 that is horizontally movably mounted to the link member 210; The driving part 230 is configured to horizontally move the flat plate 220.

The link member 210 includes a first joint portion 211 and a second joint portion 212 that are rotatably mounted to the casing 10 via central shafts 215, 216 mounted on the sides, and a joint 219 for connecting the first joint portion 211 And the second connecting portion 212. One end of the connecting member extends to form an extension member 213, and a roller 240 is rotatably mounted on the inner side surface of the extension member 213.

The roller 240 is located in a recess 112 formed in the first cam portion 110 of the cam mechanism 100. According to this, when the first cam portion 110 rotates based on the rotation shaft 101, the roller 240 reciprocates up and down in the groove 112 with the difference in height between the top dead center T and the bottom dead center L of the groove 112 of the first cam portion 110. As a result, the link member 210 is moved up and down in the opposite direction from the left side portion and the right side portion (referenced to FIG. 3) centering on the center axes 215, 216.

Linear guide grooves 211-1 and 212-1 extending in the longitudinal direction are formed on the inner surfaces of the first and second coupling portions 211 and 212 of the link member 210, respectively.

The flat plate 220 having a predetermined area is respectively fitted with a first hinge shaft 221 and a second hinge shaft 222 at both end portions. The two end portions of the second hinge shaft 222 attached to the second end portion are housed in the guide grooves 211-1, 212-1 formed on the inner faces of the first and second joint portions 211, 212 of the link member 210. Inside. The two end portions of the first hinge shaft 221 mounted on the first end portion of the flat plate 220 are respectively disposed in the guide grooves 11 formed on the inner side surfaces of the casing 10 and the flat plates 220, respectively.

Mounted on both end portions of the first and second hinge shafts 221, 222 of the two end portions of the flat plate 220, respectively, for example, a slide coma is mounted. 221-1, 221-2, 222-1, and 222-2 are used for linear movement and rotational movement in the guide grooves 211-1, 212-1, and 11 formed in the link member 210 and the casing 10. Thereby, the plate 220 can be rotated (hinge) relative to the link member 210 and the casing 10.

The first terminal portion of the plate 220 is coupled to the length adjustment unit. The length adjusting unit comprises: a flat plate driving part 230 mounted on the casing 10; a casing 231 inserted with the driving shaft 232 of the flat plate driving part 230 and one end connected to the flat plate 220 (as shown in FIG. 3, the hinged movement is connected to the dew On the first hinge shaft 221 outside the flat plate 220).

A threaded portion is formed on an outer circumferential surface of the drive shaft 232 and an inner circumferential surface of the housing 231 (a region in which the drive shaft is inserted), whereby the housing 231 can be oriented toward the chain by the screw portion according to the rotation of the drive shaft 232. The knot member 210 is moved toward the flat plate driving portion 230, and as a result, the flat plate 220 can be linearly moved along the guide grooves 211-1, 212-1, 11 formed in the link member 210 and the casing 10.

Power transmission unit 300

As shown in FIG. 2, the power transmission unit 300 is disposed at a side portion of the cam mechanism 100 and a lower portion of the vertical reciprocating drive unit 200.

4 clearly shows the relationship between the cam mechanism 100, the power transmission unit 300, and the piston 400 to be described later, and the detailed configuration of the power transmission unit 300 is also shown.

The power transmission portion 300 includes: a rotary shaft 310 rotatably mounted to the casing 10 through a bearing B; and a power that is mounted (or formed) on the rotary shaft 310 Transfer component 320. The power transmission member 320 is interlocked with the second cam portion 120 of the cam mechanism 100.

The power transmission member 320 includes: a disk-shaped flat plate having a rotary shaft 310 penetrating through the central portion; first rollers 321A, 321B, 321C and second rollers 322A, 322B rotatably disposed on the disk-shaped flat plate and having a predetermined height, 322C.

The three first rollers 321A, 321B, 321C and the three second rollers 322A, 322B, 322C are interlaced with each other, and the three first rollers 321A, 321B, 321C and the three second rollers 322A, 322B, 322C have respectively The same angular interval.

The height of the first rollers 321A, 321B, 321C is higher than the height of the second rollers 322A, 322B, 322C (for ease of understanding, the second roller 322A having a lower height is shown by a dotted line in FIG. 4 as a plan view. , 322B, 322C). In this configuration, the first rollers 321A, 321B, 321C correspond to the first disc-shaped panel 121 constituting the second cam portion 120 of the cam mechanism 100, and the second rollers 322A, 322B, 322C and the cam mechanism 100 are constructed. The second disc-shaped panel 122 of the middle second cam portion 120 corresponds.

The outer circumferential surfaces of the first rollers 321A, 321B, and 321C correspond to the outer circumferential surfaces of the first disk-shaped panel 121 of the second cam portion 120, and the outer circumferential surfaces of the second rollers 322A, 322B, and 322C and the second cam portion 120 The two disc-shaped panels 122 correspond.

The two convex portions 121A, 121B formed on the outer circumferential surface of the first disk-shaped panel 121 of the second cam portion 120 can enter the space between the first rollers 321A, 321B, 321C. Similarly, the second cam portion 120 is formed. The two projections 122A, 122B on the outer peripheral surface of the two disc-shaped panel 122 can enter into the space between the second rollers 322A, 322B, 322C.

Hereinafter, the power transmission process between the power transmission member 320 of the power transmission portion 300 having the above configuration and the second cam portion 120 of the cam mechanism 100 will be briefly described with reference to FIGS. 2 and 4.

When the rotating shaft 101 of the cam mechanism 100 is rotated in accordance with the rotating shaft driving portion 20, the first and second disk-shaped panels 121, 122 of the second cam portion 120 rotate accordingly. At this time, if the outer peripheral surfaces of the first and second disc-shaped panels 121 and 122 correspond to the outer peripheral surfaces of the first rollers 321A, 321B, and 321C and the second rollers 322A, 322B, and 322C of the power transmission member 320, respectively, the power is applied. The transmitting member 320 does not rotate.

If one of the two projections 121A, 121B (for example, 121A) formed in the first disc-shaped panel 121 (rotation state) of the second cam portion 120 constituting the cam mechanism 100 enters two firsts The space between the rollers (for example, 321A and 321B), the power transmitting member 320 rotates.

Thereafter, if one of the two convex portions 122A, 122B (for example, 122A) formed on the second disk-shaped panel 122 (rotation state) in the second cam portion 120 that is rotated is successively entered into two The space between the second rollers (for example, 322A and 322B), the power transmitting portion 320 continues to rotate.

As the rotation shaft 101 of the cam mechanism 100 rotates, the projection 121A formed on the first disc-shaped panel 121 (rotation state) of the second cam portion 120 is separated from the space between the two first rollers 321A and 321B. And the second disc-shaped panel 122 formed in the second cam portion 120 (rotation state) The upper projection 122A is separated from the space between the two second rollers 322A and 322B.

In this state, the outer circumferential surfaces of the first rollers 321A, 321B, and 321C correspond to the outer circumferential surfaces of the first disk-shaped panel 121 of the second cam portion 120, and the outer circumferential surfaces of the second rollers 322A, 322b, and 322C and the second cam The outer peripheral surface of the second disk-shaped panel 122 of the portion 120 corresponds to each other, and therefore, although the rotating shaft 101 of the cam mechanism 100 is still rotated, the power transmission member 320 does not rotate.

As the rotation shaft 101 of the cam mechanism 100 rotates, the other projection 121B formed on the first disc-shaped panel 121 (rotation state) of the second cam portion 120 enters a space between the two first rollers, Successively, the other projection 122B formed on the second disc-shaped panel 122 of the rotating second cam portion 120 enters the space between the second rollers, whereby the power transmitting member 320 rotates.

According to the process as described above, the power transmitting member 320 repeatedly performs rotation and stop.

The first gear portion 323 is formed on the outer peripheral surface of the disk-shaped panel of the power transmission member 320.

Piston portion 400

The piston portion 400 is disposed at a side portion of the power transmission portion 300 and a lower portion of the vertical reciprocating driving portion 200.

The piston portion 400 includes a rotating shaft 420 that is vertically and rotatably disposed in the outer casing 410, a second gear portion 430 that is mounted (formed) on the outer peripheral surface of the rotating shaft 420, and a coupler 470 that is coupled to rotate. The lower end of the shaft 420; a piston (Plunger) 440 is fixed to the lower end of the coupler 470.

The second gear portion 430 attached to the outer circumferential surface of the rotating shaft 420 meshes with the first gear portion 323 of the power transmission portion 300, and a nozzle unit 500 to be described later is provided at the lower end of the piston 440.

A separating member 460 for separating the space of the outer casing 410 is fixed to the lower end of the coupler 470, and the piston 440 penetrates the separating member 460. A spring 450 surrounding the piston 440 is disposed in a lower space of the separating member 460.

A planar spherical bearing 480 is provided at the upper end of the rotating shaft 420. The flat portion of the planar spherical bearing 480 is in contact with the lower surface of the flat plate 220 of the upper and lower reciprocating driving portion 200, and the spherical portion is supported by the hemispherical concave surface 421 formed on the upper end surface of the rotating shaft 420.

As shown in FIG. 7a to FIG. 7d, a notch portion 411 having a side surface cut at a predetermined depth, width, and length (height) is formed at a lower end portion of the piston 440 (the function of the notch portion will be described later). ).

Nozzle unit 500

5 and 6 are schematic views showing an operation state of the up-and-down reciprocating driving portion in the fluid discharge device according to an embodiment of the present invention, and a part of the casing is not shown in FIGS. 5 and 6 for the sake of easy understanding.

A nozzle unit 500 is disposed at a lower portion of the piston portion 400 illustrated in FIGS. 5 and 6 . Here, the nozzle unit is not shown in FIGS. 5 and 6, but the nozzle unit is shown in FIGS. 7a to 7d.

The nozzle unit 500 includes: is fixed under the outer casing 410 of the piston portion 400 a block 510 at the end; a nozzle 530 coupled to the lower end of the block 510. The block 510 includes an inner space 520 (refer to FIG. 7) that accommodates the piston 440 of the piston portion 400 internally (together with the fluid); and an inflow port 521 that is formed on both sides of the inner space 520 and communicates with the inner space 520, respectively. And the discharge port 522.

The inflow port 521 is connected to an external fluid storage portion, and the discharge port 522 is connected to a nozzle 530 coupled to the lower end of the block body 510.

Hereinafter, the overall operation of the fluid discharge apparatus according to an embodiment of the present invention having the above configuration and the functions of the respective components will be described with reference to the respective drawings.

Fig. 5 is a schematic view showing the ascending state of the piston shown in Fig. 2, and Fig. 6 is a view showing the state in which the piston shown in Fig. 2 is lowered. 7a to 7d are schematic views showing the relationship between a piston and a nozzle in an operational sequence of a fluid discharge device according to an embodiment of the present invention.

Terms relating to directions such as "left side", "right side", "upper side", "lower side" and the like used in the following description are given for convenience of understanding based on the respective drawings.

In the state shown in FIG. 6, that is, the roller 240 provided on the link member 210 of the upper and lower reciprocating driving portion 200 is located in the state of the top dead center T in the groove 112 of the first cam portion 110 of the cam mechanism 100, the piston The lower end of the piston 440 of the portion 400 is close to the bottom surface of the inner space 520 of the block 510 of the nozzle unit 500, and the notch portion 411 of the piston 440 does not correspond to the inflow port 521 and the discharge port 522 formed in the block (Fig. 7d state).

Fluid inflow process

Based on the rotation of the rotary shaft 101 of the cam mechanism 100, the first cam portion 110 rotates accordingly, whereby the roller 240 mounted on the link member 210 of the upper and lower reciprocating drive portion 200 reaches the first cam portion 110 of the cam mechanism 100. When the bottom dead center L in the groove 112, the right side portion (referenced to FIG. 2) of the link member 210 is moved downward (rotated) to correspond to the heights of the top dead center T and the bottom dead center L of the first cam portion 110. Poorly, conversely, centered on the central axes 215, 216, the left side portion (connected to the plate 220) is moved upward (rotated).

At the same time, the flat plate 220 connected to the link member 210 is moved upward (rotationally) about the second hinge shaft 222. Thus, when the flat plate 220 is moved upward, the spring 450 compressed by the flat plate 220 in the outer casing 410 of the piston portion 400 is restored, and accordingly, the rotating shaft 420 and the piston 440 of the piston portion 400 are moved upward based on the restoring force of the spring 450.

Further, during the execution of the above steps, the second cam portion 120 of the cam mechanism 100 rotates together with the first cam portion 110. Here, the second gear portion 430 of the piston portion 400 that is in meshing state with the first gear portion 323 of the power transmission member 320 of the power transmission portion 300 selectively receives the rotational force of the second cam portion 120.

That is, in the configuration and operation of the power transmission unit 300, the power transmission member 320 repeatedly performs rotation and stop based on the configuration of the second cam portion 120 of the cam mechanism 100 and the power transmission member 320 of the power transmission portion 300. .

Here, when the rotation shaft 420 of the piston portion 400 moves upward, the power transmission member 320 is preferably in a stopped state, that is, the rotation shaft 420 of the piston portion 400 does not rotate.

As described above, as the rotation shaft 420 of the piston portion 400 rises, the notch portion 411 formed at the lower end of the piston 440 corresponds to the inflow port 521 formed in the block body 510 of the nozzle unit 500, with the fluid flowing into the piston 440 is moved in the internal space 520 of the block 510 that is pulled upward (the state of FIGS. 5 and 7a).

Thereafter, even if the first cam portion 110 of the cam mechanism 100 continues to rotate, the roller 240 mounted on the link member 210 of the upper and lower reciprocating driving portion 200 is located at the top dead center and the bottom dead center of the first cam portion 110 of the connecting cam mechanism 100. The groove 112 is so that the height of the link member 210 and the plate 220 does not change significantly.

However, as the power transmission member 320 of the power transmission portion 300 rotates, the rotation shaft 420 of the piston portion 400 that receives the rotational force of the second cam portion (continuous rotation) 120 of the cam mechanism 100 rotates, thereby being formed in the piston portion. The notch portion 411 on the piston 440 of 400 is rotated toward the discharge port 522 formed on the block 510 of the nozzle unit 500 (state of Fig. 7b).

Fluid discharge process

As the first cam portion 110 of the cam mechanism 100 continues to rotate, the roller 240 on the link member 210 of the upper and lower reciprocating drive portion 200 reaches the top dead center T of the first cam portion 110 of the cam mechanism 100, at this time, the link member 210 The right side portion (referenced to FIG. 2) is moved upward (rotated) corresponding to the height difference between the top dead center T and the bottom dead center L of the first cam portion 110, and conversely, the center axis 215, 216 is centered, and the left side portion Move down (turn).

The plate 220 connected to the link member 210, that is, the second hinge shaft 222 Moves downward (rotate) for the center. According to the downward movement of the flat plate 220, the rotating shaft 420 of the piston portion 400 that is in contact with the flat plate 220 is lowered while the spring 450 is compressed in the outer casing 410.

During the progress of the above steps, the second cam portion 120 of the cam mechanism 100 rotates together with the first cam portion 110, but when the rotating shaft 420 of the piston portion 400 moves downward, the power transmitting member 320 is preferably in a stopped state. That is, the rotation shaft 420 of the piston portion 400 does not rotate.

As described above, as the rotation shaft 420 of the piston portion 400 moves downward, the notch portion 411 formed at the lower end portion of the piston 440 corresponds to the discharge port 522 formed on the block 510 of the nozzle unit 500. At the same time, the fluid located in the inner space 520 of the block 510 is pressurized by the downwardly moving piston 440 and flows through the discharge port 522 to the nozzle 530, and then discharged to the outside (states of FIGS. 6 and 7c).

According to the continuous driving of the rotary shaft driving portion 20, the cam mechanism 100 performs the operation, and thereby the fluid inflow step and the fluid discharge step as described above are repeatedly performed, so that the fluid is continuously discharged onto the object.

In order to prevent the piston 440 from rotating when the piston 440 of the piston portion 400 moves up and down, the roller 240 attached to the link member 210 of the upper and lower reciprocating driving portion 200 should enter the first cam portion 110 of the cam mechanism 100. At the top dead center and the bottom dead center, the first and second disc-shaped panels 121, 122 of the second cam portion 120 of the cam mechanism 100 and the first and second rollers 321A, 321B, 321C, 322A, 322B, 322C are caused. The outer peripheral surfaces are correspondingly arranged with the projections 121A, 121B, 122A, 122B formed on the first and second disc-shaped panels 121, 122.

Hereinafter, the detailed function of the fluid discharge device according to an embodiment of the present invention which operates in accordance with the above steps will be described with reference to the accompanying drawings.

According to the fluid discharge device of the embodiment of the present invention, as shown in FIG. 2, a plane spherical bearing 480 is attached to the upper end of the rotating shaft 420 of the piston portion 400 corresponding to the bottom surface of the flat plate 220 of the vertical reciprocating driving portion 200.

The flat portion of the planar spherical bearing 480 is in contact with the lower surface of the flat plate 220 of the upper and lower reciprocating driving portion 200, and the spherical portion is supported on the hemispherical concave surface 421 formed on the upper end surface of the rotating shaft 420.

As described above, the flat plate 220 connected to the link member 210 of the upper and lower reciprocating driving portion 200 is rotated upward and downward about the second hinge shaft 222, and the flat plate 220 is kept inclined in the process. Conversely, the rotating shaft 420 of the piston portion 400 that is in contact with the flat plate 220 performs a vertical linear movement.

According to the plane spherical bearing 480, the rotating shaft 420 of the piston portion 400 that performs the vertical linear movement and the flat plate 220 that performs the hinge movement can always maintain the surface contact state, so that the rotational force (the downward moving force) of the flat plate 220 can be accurately transmitted to The rotation shaft 420 of the piston portion 400.

In the present invention, the amount of fluid flowing into the internal space 520 of the block 510 of the nozzle unit 500 is proportional to the upward and downward movement distance of the piston 440 of the piston portion 400. That is, the larger the amount of up and down movement of the piston 440, the greater the amount of fluid flowing into the internal space 520 of the block 510 of the nozzle unit 500.

The distance between the central axes 215, 216 of the link member 210 and the center of the rotational axis 420 of the piston portion 400 (D of FIG. 3) is always constant, and Under the condition that the left side portion (the portion corresponding to the flat plate 220) of the link member 210 is always rotated up and down at the same angle, the amount of up and down movement of the piston 440 is proportional to the inclination angle of the flat plate 220 at the time of rotation. That is, the large inclination angle of the flat plate 220 means that the vertical movement amount of the vertical direction of the rotation shaft 420 of the piston portion 400 which is in contact with the bottom surface of the flat plate 220 is large.

Under the condition that the left side portion of the link member 210 is always rotated up and down at the same angle, the longer the distance between the second hinge shaft 222 of the flat plate 220 and the central axes 215, 216 of the link member 210, based on the link member 210 The angle of inclination of the rotating plate 220 is greater.

Thus, in order to increase the amount of fluid flowing into the interior space 520 of the block 510 of the nozzle unit 500, the distance between the second hinge axis 222 of the plate 220 and the central axes 215, 216 of the link member 210 should preferably be lengthen. Thus, when the distance between the second hinge shaft 222 of the flat plate 220 and the central axes 215, 216 of the link member 210 is increased, the amount of fluid flowing into the inner space 520 of the block 510 of the nozzle unit 500 will increase.

According to the discharged matter of the fluid, it is necessary to adjust the one-time discharge amount of the fluid. For this reason, the length adjusting unit capable of adjusting the position of the flat plate 220 with respect to the link member 210 of the upper and lower reciprocating driving portion 200 is employed in the present invention.

When the drive shaft 232 is rotated in the first direction by driving the flat plate driving portion 230 constituting the length adjusting unit, the plate 220 is formed according to the interaction between the outer peripheral surface of the drive shaft 232 and the threaded portion on the inner peripheral surface of the housing 231. The guide members 211-1, 212-1, 11 formed on the link member 210 and the casing 10 are moved toward the link member 210. Thus, the distance between the second hinge shaft 222 of the plate 220 and the central axes 215, 216 of the link member 210 becomes The upward movement distance of the piston 440 is small (i.e., the inflow of fluid is reduced).

Conversely, if the drive shaft 232 of the plate driving portion 230 is rotated in the second direction, the plate 220 is driven toward the plate along the guide grooves 211-1, 212-1, 11 formed on the link member 210 and the casing 10. The part 230 moves. As a result, the distance between the second hinge shaft 222 of the flat plate 220 and the central axes 215, 216 of the link member 210 becomes long and the upward moving distance of the piston 440 increases, so that the inflow amount of the fluid increases.

Thus, the present invention can easily adjust the amount of discharged fluid by the length adjusting unit.

Further, in the piston portion 400, a coupler 470 is attached to the lower end of the rotating shaft 420, and a piston 440 is fixed to the coupler 470. As described above, the fluid is supplied to the nozzle 530 through the notch portion 411 formed on the piston 440, so that it is necessary to replace or wash the nozzle 530 and the piston 440 in which the fluid passage is formed for long-term use.

When the piston 440 is replaced/washed, it is not necessary to replace the entire rotating shaft 420 combined/connected with other components, and it is only necessary to separate the coupler 470 and then replace/wash the piston 440, whereby the replacement/washing step can be easily performed. .

The invention has been described above with reference to the preferred embodiments thereof, but these are only exemplary, as those of ordinary skill in the art in

For example, although in the embodiment as illustrated and described above, the power transmitting member 320 is alternately provided with three first rollers 321A, 321B, 321C and three second rollers 322A, 322B, 322C, and the cam mechanism 100 of The second cam portion 120 includes two first and second disc-shaped panels 121 and 122, but the power transmitting member 320 may be provided with only three first rollers 321A, 321B, and 321C under the same conditions, and the cam mechanism 100 The two cam portions 120 may be constituted by, for example, a single disk-shaped panel 121.

10‧‧‧Chassis

20‧‧‧Rotary shaft drive

100‧‧‧Cam mechanism

101‧‧‧Rotary axis

110‧‧‧First cam section

111‧‧‧ Subject

112‧‧‧ Groove

120‧‧‧Second cam department

121‧‧‧First disc panel

122‧‧‧Second disc panel

121A, 121B and 122A, 122B‧‧‧ projections

200‧‧‧Up and down reciprocating drive

210‧‧‧Link components

240‧‧‧ Roller

220‧‧‧ tablet

230‧‧‧ Flat Drive Department

215, 216‧‧‧ central axis

219‧‧‧Connecting parts

211‧‧‧ First Link

212‧‧‧Second Link

211-1, 212-1‧‧‧ guiding slot

221‧‧‧First hinge shaft

213‧‧‧Extensions

222‧‧‧Second hinge shaft

221-1, 221-2, 222-1, 222-2‧‧‧ sliding blocks

231‧‧‧Shell

232‧‧‧Drive shaft

300‧‧‧Power Transmission Department

321A, 321B, 321C‧‧‧ first roll

322A, 322B, 322C‧‧‧ second roller

400‧‧‧Piston Department

410‧‧‧ Shell

420‧‧‧Rotary axis

421‧‧‧hemispherical concave surface

430‧‧‧Second gear department

440‧‧‧Piston

450‧‧‧Spring

460‧‧‧Separate parts

470‧‧‧ Coupler

480‧‧‧Spherical spherical bearings

500‧‧‧Nozzle unit

510‧‧‧ Block

520‧‧‧Internal space

521‧‧‧flow entrance

522‧‧‧Export

530‧‧‧Nozzles

T‧‧‧top dead point

L‧‧‧Bottom dead point

1 is a schematic configuration view of a general piston type fluid discharge device; FIG. 2 is a front cross-sectional view of the fluid discharge device according to an embodiment of the present invention; FIG. 3 is a plan view of FIG. 5 is a schematic view showing a state in which the piston of FIG. 2 is raised; FIG. 6 is a view showing a state in which the piston of FIG. 2 is lowered; and FIGS. 7a to 7d are diagrams showing an outline of the operation of the fluid discharge device according to an embodiment of the present invention. Schematic diagram of the relationship between the piston and the nozzle.

10‧‧‧Chassis

20‧‧‧Rotary shaft drive

100‧‧‧Cam mechanism

101‧‧‧Rotary axis

110‧‧‧First cam section

111‧‧‧ Subject

112‧‧‧ Groove

120‧‧‧Second cam department

200‧‧‧Up and down reciprocating drive

212‧‧‧Second Link

216‧‧‧ center axis

220‧‧‧ tablet

221‧‧‧First hinge shaft

222‧‧‧Second hinge shaft

230‧‧‧ Flat Drive Department

231‧‧‧Shell

232‧‧‧Drive shaft

240‧‧‧ Roller

300‧‧‧Power Transmission Department

310‧‧‧Rotary axis

320‧‧‧Power transmission components

400‧‧‧Piston Department

410‧‧‧ Shell

420‧‧‧Rotary axis

421‧‧‧hemispherical concave surface

430‧‧‧Second gear department

440‧‧‧Piston

450‧‧‧Spring

460‧‧‧Separate parts

470‧‧‧ Coupler

480‧‧‧Spherical spherical bearings

T‧‧‧top dead point

L‧‧‧Bottom dead point

Claims (11)

A cam type fluid discharge device includes: a cam mechanism including a rotating shaft rotatably disposed on the casing; and a first cam portion and a second cam portion rotatable together with the rotating shaft; and a vertical reciprocating driving portion disposed at One side of the cam mechanism is vertically rotatable in conjunction with the first cam portion; the piston portion is vertically movable according to the rotation of the vertical reciprocating driving portion, and is rotatable according to the second cam portion of the cam mechanism a nozzle unit disposed at a lower portion of the piston portion to complete an inflow and discharge of a fluid according to a vertical movement of the piston portion, and an opening and a discharge port for opening and closing the fluid according to a rotational movement of the piston portion; wherein the first cam The portion includes: a cylindrical body disposed on the rotating shaft; a single groove formed on an outer circumferential surface of the body; the groove includes: a top dead center and a bottom dead center, respectively formed and passed through the body The end of the center of the diameter of the two ends corresponding to the area; two curved portions, respectively for connecting the above top dead center and the above The upper and lower reciprocating driving portion includes: a roller housed in the groove, so that the vertical reciprocating driving portion repeatedly performs downward rotation and upward rotation according to the rotation of the first cam portion; the link member is centered The shaft is rotatably mounted on the casing, and is mounted with a roller housed in the groove of the first cam portion; a flat plate, the first end portion is rotatably mounted on the casing, and the second terminal portion Rotatablely mounted to the above-mentioned link member; The link member rotates about the central axis according to the rotation of the first cam portion, and the flat plate rotates around the second end portion in accordance with the rotation of the link member to move the piston portion up and down. The cam-type fluid discharge device according to claim 1, wherein the link member includes: a first joint portion and a second joint portion, respectively rotatably disposed on the machine according to the central shaft mounted on a side surface a casing; a connecting member for connecting the first connecting portion and the second connecting portion; and an extending member extending from a front end of the connecting member and having the roller attached to a side surface thereof. The cam-type fluid discharge device according to claim 2, wherein the upper and lower reciprocating driving portion further includes a length adjusting unit for adjusting a position of the flat plate relative to the link member, wherein the length adjusting unit comprises: a flat plate a driving portion mounted on the casing; the casing having one end inserted into a driving shaft provided with the flat plate driving portion and the other end connected to the flat plate, based on an outer circumferential surface formed on the driving shaft and an inner circumferential surface of the casing The interaction of the threaded portion moves the housing to the link member or the flat plate drive unit according to the drive of the drive shaft, and the two end portions of the hinge shaft provided on the first end portion of the flat plate are respectively movably Located in a guide groove formed in the casing, the two end portions of the hinge shaft provided at the second end portion are movably located at the first joint portion and the first portion formed on the link member In the guide groove of the two joint portion, the link member moves along the guide groove of the casing and the guide groove of the first joint portion and the second joint portion in accordance with movement of the casing of the adjusting unit. The cam-type fluid discharge device according to claim 1, wherein the piston portion includes: a rotating shaft that is vertically and rotatably disposed in the outer casing; and a coupler coupled to a lower end of the rotating shaft; a lower end of the coupler for separating the space of the outer casing; a piston fixed to the lower end of the coupler, penetrating the separating member to realize fluid inflow and discharge in the nozzle unit, and for opening and closing The inflow port and the discharge port; and a spring are provided around the piston at a lower portion of the separating member for restoring the piston that moves downward. The cam-type fluid discharge device according to claim 4, wherein the rotating shaft of the piston portion is provided with a planar spherical bearing at an upper end thereof, and a planar portion of the planar spherical bearing contacts a lower portion of a flat plate of the vertical reciprocating driving portion The spherical surface of the planar spherical bearing is supported by a hemispherical concave surface formed on an upper end surface of the rotating shaft of the piston portion. The cam-type fluid discharge device according to claim 4, wherein the lower end portion of the piston is formed to have a side surface at a predetermined depth and width. The notch portion cut into the length and the length, and the inflow and discharge of the fluid in the nozzle unit and the opening and closing of the inflow port and the discharge port are performed by the notch portion. The cam-type fluid discharge device according to claim 5, wherein the nozzle unit includes: a block body disposed at a lower end of the outer casing of the piston portion; and a nozzle coupled to a lower end of the block; the block body is An internal space of the piston for accommodating the piston portion is provided therein, and the inflow port and the discharge port respectively communicating with the internal space are formed on both sides of the internal space, and the fluid inlet portion of the inflow port and the outside is formed Connected, the discharge port is connected to the nozzle. The cam-type fluid discharge device according to claim 1, further comprising: a power transmission portion disposed between the cam mechanism and the piston portion, and a rotational force of the second cam portion of the cam mechanism The piston is selectively transmitted to the piston portion. The cam-type fluid discharge device according to claim 8, wherein the power transmission portion includes a rotary shaft rotatably attached to the casing, and a power transmission member attached to the rotary shaft of the power transmission portion. And the second cam portion of the cam mechanism is coupled to the second cam portion; the power transmission member includes: a disk-shaped flat plate that passes through the rotating shaft of the power transmission portion at a central portion; and is rotatably provided on the disc-shaped flat plate a plurality of rollers having the same angular interval from each other; The second cam portion includes a disk-shaped panel attached to the rotating shaft provided on the casing, and an outer peripheral surface corresponding to an outer circumferential surface of the plurality of rollers of the power transmission portion. The disk-shaped panel includes: a curved hemispherical projection protruding from an outer peripheral surface of the disc-shaped panel to enter a space between the plurality of rollers of the power transmission member; and the roller of the vertical reciprocating drive portion is located at the When the top dead center and the bottom dead center of the groove of the cam portion, the outer circumferential surface of the disk-shaped panel of the second cam portion corresponds to the outer circumferential surface of the plurality of rollers of the power transmission member, thereby The rotational force of the second cam portion is not transmitted to the above-described piston portion. The cam-type fluid discharge device according to claim 8, wherein the power transmission portion includes a rotary shaft rotatably attached to the casing, and a power transmission member attached to the rotary shaft of the power transmission portion. And the second power-transmitting member is coupled to the second cam portion of the cam mechanism; the power transmission member includes a disk-shaped flat plate through which the rotary shaft of the power transmission portion passes through the center portion; and the disk-shaped flat plate is rotatably provided a plurality of first rollers and a plurality of second rollers, the plurality of first rollers having the same angular interval from each other, the plurality of second rollers having the same angular interval from each other; the second cam portion comprising: the first disc The second panel and the second disc-shaped panel are mounted on the rotating shaft provided on the casing at a predetermined interval; the outer peripheral surface of the first disc-shaped panel and the power transmission member The outer peripheral surface of the first roller corresponds to an outer peripheral surface of the second disk-shaped panel and the outer peripheral surface of the second roller of the power transmission member, and the first disk-shaped panel includes a convex hemispherical shape An exit portion protruding from an outer peripheral surface of the first disc-shaped panel to enter a space between the plurality of first rollers of the power transmission member; the second disc-shaped panel comprising: a curved hemispherical shape The protruding portion protrudes from the outer peripheral surface of the second disk-shaped panel and can enter the space between the plurality of second rollers of the power transmission member; and the roller of the vertical reciprocating driving portion is located at the When the top dead center and the bottom dead center of the groove of the cam portion, the outer peripheral surface of the first disk-shaped panel of the second cam portion corresponds to the outer peripheral surface of the first roller of the power transmission member, And an outer circumferential surface of the second disk-shaped panel of the second cam portion corresponds to an outer circumferential surface of the second roller of the power transmission member, so that the second cam Rotational force is not transmitted to said piston unit. The cam-type fluid discharge device according to claim 9 or 10, wherein the disc-shaped flat plate for constituting the power transmission member of the power transmission portion has a first gear portion formed on an outer peripheral surface thereof, A second gear portion that meshes with the first gear portion formed on the disc-shaped flat plate of the power transmission member is formed on an outer peripheral surface of the rotating shaft of the piston portion.