JP2013141639A - Dispenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dispenser including valves capable of being efficiently changed over between a supply state and a discharge state without hardening a liquid resin.SOLUTION: This dispenser 1 includes: a cylinder 2 storing and discharging a solution; an expansion/contraction means 10 expanding/contracting the cylinder 2; a supply valve 20; and a discharge valve 30. The supply valve 20 and the discharge valve 30 are connected by a connection plate 7 to be connected to the bellows-structure cylinder 2 storing and discharging the solution, a supply hole 5 formed in a side wall 21b of a supply inside pipe 21 and a discharge hole 6 formed in a side wall 31b of a discharge inside pipe 31 are present in directions opposite to each other, a supply valve plate 23 and a discharge valve plate 33 are connected to an interlocking means 40 simultaneously interlocking them to be able to efficiently change over the supply valve 20 and the discharge valve 30 between the supply state and the discharge state, the solution is not hardened, and solution dripping is not generated.

Description

  The present invention relates to a dispenser including a valve in a path for receiving supply of liquid resin and a path for discharging liquid resin.

  In a dispenser capable of supplying a liquid resin, the liquid resin flows through the inside of a pipe serving as the flow path and is discharged from the nozzle toward the outside. Generally, a valve for opening and closing a flow path of liquid resin is disposed in the pipe.

  As a valve used in the dispenser, for example, there is a needle valve in which a valve body is formed in a needle shape so as to easily adjust the flow rate of the liquid resin. Also, as shown in Patent Document 1 below, there is a check valve that is disposed inside a cylinder and can prevent reverse inflow of liquid. Furthermore, as shown in Patent Document 2 below, there is a rotary valve that opens and closes a liquid flow path by driving a rotor.

JP 2004-0667237 A JP 2006-272335 A

  However, in any of the valve structures described above, there is a sliding portion where the liquid resin receives an impact. That is, in the cylinder in which the liquid resin flows and is stored, the liquid resin slides on the inner surface of the cylinder, so that the curable liquid resin may be cured by friction generated by the sliding. Therefore, the hardened liquid resin may be accumulated inside the cylinder. When the dispenser is operated from this state, there is a problem that the valve is damaged by the hardened liquid resin.

  The present invention has been made in view of the above circumstances, and there is a problem to be solved by a valve that can be efficiently switched between a supply state and a discharge state without curing the liquid resin.

  The present invention includes a cylinder for storing and discharging a solution, an expansion / contraction means for expanding and contracting the cylinder, a supply flow path for supplying the solution to the cylinder, a supply valve for opening and closing the supply flow path, and the cylinder. In a dispenser comprising a discharge flow path for discharging a solution and a discharge valve for opening and closing the discharge flow path, the supply valve includes a supply inner pipe and a supply outer pipe surrounding the supply inner pipe. The supply outer pipe is provided with a supply valve plate having a cylindrical cavity having an inner diameter larger than the outer diameter of the supply inner pipe, the upper end of the supply inner pipe being sealed, and the side wall near the upper end being A supply hole facing the inner wall of the cylindrical cavity of the supply valve plate is formed, and the width of the supply valve plate is formed wider than the width of the supply hole. An inner pipe and a discharge outer pipe surrounding the discharge inner pipe, and the discharge outer pipe is provided with a discharge valve plate having a cylindrical cavity having an inner diameter larger than the outer diameter of the discharge inner pipe, The discharge inner pipe is sealed at the upper end, and a discharge hole is formed in the side wall near the upper end to face the inner wall of the cylindrical cavity of the discharge valve plate. The discharge valve plate is wider than the discharge hole. The supply valve and the discharge valve are connected to the cylinder by being connected by a connecting plate, and are formed in the supply hole formed in the side wall of the supply inner pipe and the side wall of the discharge inner pipe. The discharge holes are in opposite directions, and the supply valve plate and the discharge valve plate are connected to the supply valve plate and the discharge valve plate at the same time. When the discharge hole is closed by separating and contacting the discharge valve plate with respect to the discharge hole and the supply valve plate with respect to the supply hole. The supply hole is opened, and when the discharge hole is opened, the supply hole is closed, the interlocking means is operated, the supply valve is opened and the discharge valve is closed, and then the expansion / contraction means is operated to supply the solution. After being accommodated in the cylinder and operating the interlocking means to close the supply valve and open the discharge valve, the expansion / contraction means is operated for a specified distance so that a fixed amount of solution can be discharged from the cylinder.

  According to the present invention, the supply valve is disposed at the lower portion and the discharge valve is disposed at the upper portion, so that the supply passage, the cylinder, and the discharge passage can be easily vented.

  The cylinder has a bellows structure and is formed in a cylindrical shape, the upper surface of the cylinder is connected to the connecting plate to join the supply flow path and the discharge flow path, and the bottom surface of the cylinder is expanded and contracted. The expansion / contraction means can expand and contract the cylinder in a direction parallel to the central axis of the cylinder.

  In the present invention, the dispenser includes a cylinder for storing and discharging the solution, an expansion / contraction means for expanding and contracting the cylinder, a supply flow path for supplying the solution to the cylinder, and a supply valve for opening and closing the supply flow path. A discharge flow path for discharging the solution from the cylinder, and a discharge valve for opening and closing the discharge flow path. The supply valve includes a supply inner pipe and a supply outer pipe that wraps the supply inner pipe. The discharge valve includes a discharge inner pipe and a discharge outer pipe that wraps the discharge inner pipe. The supply outer pipe includes a supply valve plate having a cylindrical cavity having an inner diameter larger than the outer diameter of the supply inner pipe. The discharge outer pipe is provided with a discharge valve plate having a cylindrical cavity whose inner diameter is larger than the outer diameter of the discharge inner pipe. Supply holes are formed, is discharged holes formed in the side wall of the discharge inner pipe, the supply valve plate and the discharge valve plate interlock means is connected, the supply hole and discharge hole are in opposite directions. Therefore, in a state where the supply valve is opened and the discharge valve is closed by the interlocking unit, the solution can be accommodated in the cylinder by operating the expansion / contraction unit. On the other hand, when the supply valve is closed and the discharge valve is opened by the interlocking means, the expansion / contraction means can be operated for a specified distance to discharge a fixed amount of solution from the cylinder.

  In addition, the dispenser has a supply valve at the bottom and a discharge valve at the top, so even if air enters the supply flow path, cylinder, and discharge flow path, it can be easily removed from the discharge flow path to the outside. Can be extruded.

  Furthermore, since the cylinder has a bellows structure and is formed in a cylindrical shape, the inner surface of the cylinder and the solution do not slide, and friction does not occur and the solution does not harden. Further, since the interlocking means can alternately open and close the supply valve and the discharge valve to efficiently switch between the supply state and the discharge state, no dripping occurs.

It is sectional drawing which shows the structure of a dispenser. It is sectional drawing which shows the state which accommodates a solution in a cylinder. FIG. 3A is a cross-sectional view taken along the line b-b ′ of FIG. 2 showing the discharge valve with the discharge hole closed. FIG. 3B is a cross-sectional view taken along the line a-a ′ of FIG. 2 showing the supply valve with the supply hole opened. It is sectional drawing which shows the state which discharges a solution from a cylinder. FIG. 5A is a cross-sectional view taken along the line b-b ′ of FIG. 4 showing the discharge valve with the discharge hole opened. FIG. 5B is a cross-sectional view taken along the line a-a ′ of FIG. 4 showing the supply valve with the supply hole closed.

  A dispenser 1 shown in FIG. 1 is a dispenser that includes valves in a path for receiving supply of a solution and a path for discharging the solution.

  As shown in FIG. 1, the dispenser 1 opens a cylinder 2 that contains and discharges a solution, expansion and contraction means 10 that expands and contracts the cylinder 2, a supply channel 3 that supplies the solution to the cylinder 2, and a supply channel 3. And a supply valve 20 that shuts off, a discharge passage 4 that discharges the solution from the cylinder 2, and a discharge valve 30 that opens and closes the discharge passage 4.

  The dispenser 1 is provided with a connection plate 7 that connects the supply valve 20 and the discharge valve 30, and a flow path that communicates with the supply flow path 3 and the discharge flow path 4 inside one of the connection plates 7. 70 is formed.

  As shown in FIG. 1, a container 8 containing a solution to be supplied to the cylinder 2 is connected to the supply flow path 3. On the other hand, a discharge nozzle 9 that discharges the solution discharged from the cylinder 2 to the outside is connected to the discharge flow path 4.

  The cylinder 2 has a bellows structure and is formed in a cylindrical shape. Since the cylinder 2 has such a structure, when the solution flows inside the cylinder 2, there is no portion that slides with the inner surface of the cylinder 2, and no friction is generated. Therefore, hardening of the solution by friction can be prevented.

  The expansion / contraction means 10 has a rotatable ball screw 11, a pulse motor 12 connected to one end of the ball screw 11, a bearing portion 13 that rotatably supports the ball screw 11 at the other end, and a nut structure at the end. The ball screw 11 is screwed into the nut structure.

  The upper part 2 a of the cylinder 2 is connected to the connecting plate 7, and the inside thereof communicates with the flow path 70 of the connecting plate 7. The bottom 2 b of the cylinder 2 is connected to the moving base 14 of the expansion / contraction means 10. When the expansion / contraction means 10 is operated, the ball screw 11 is rotated by driving the pulse motor 12, thereby moving the moving base 14 in a direction parallel to the central axis of the cylinder 2 and moving the cylinder 2 in the directions of arrows A1 and A2. Can be expanded and contracted.

  The supply valve 20 includes a supply inner pipe 21 and a supply outer pipe 22 that surrounds the supply inner pipe 21 and has a bellows structure. The supply outer pipe 22 is provided with a supply valve plate 23 having a cylindrical cavity having an inner diameter larger than the outer diameter of the supply inner pipe 21.

  As shown in the partially enlarged view of FIG. 1, the supply inner pipe 21 is sealed with an upper end 21 a that is in the opposite direction to the side where the solution begins to flow in the supply flow path 3. Further, a supply hole 5 that faces the inner wall 23 a of the supply valve plate 23 is formed in the side wall 21 b in the vicinity of the upper end portion 21 a of the supply inner pipe 21.

  The width T1 of the supply valve plate 23 is formed wider than the width T2 of the supply hole 5. Thus, since the width T1 is formed wider than the width T2, when the supply inner pipe 21 comes into contact with the inner wall 23a of the supply valve plate 23, the supply hole 5 is hermetically sealed from the container 8. It is possible to prevent dripping of the supplied solution and to prevent air from entering.

  The discharge valve 30 includes a discharge inner pipe 31 and a discharge outer pipe 32 that surrounds the discharge inner pipe 31 and has a bellows structure. The discharge outer pipe 32 is provided with a discharge valve plate 33 having a cylindrical cavity having an inner diameter larger than the outer diameter of the discharge inner pipe 31.

  As shown in the partially enlarged view of FIG. 1, the discharge inner pipe 31 has its upper end portion 31 a on the side from which the solution is discharged in the discharge flow path 4 sealed. Further, a discharge hole 6 that faces the inner wall 33 a of the discharge valve plate 33 is formed in the side wall 31 b in the vicinity of the upper end portion 31 a of the discharge inner pipe 31.

  A width T3 of the discharge valve plate 33 is formed wider than a width T4 of the discharge hole 6. Thus, since the width T3 is formed wider than the width T4, when the discharge inner pipe 31 comes into contact with the inner wall 33a of the discharge valve plate 33, the discharge hole 6 is sealed and the solution liquid is removed. It is possible to prevent anyone and air from entering.

  As shown in FIG. 1, the supply valve plate 23 and the discharge valve plate 33 are connected to interlocking means 40 that simultaneously interlocks them. The interlocking means 40 includes an air cylinder 41, a piston 42, and a connecting portion 43 connected to the supply valve plate 23 and the discharge valve plate 33. When the interlocking means 40 is activated, the piston 42 slides in the direction of arrows B1 and B2 in the air cylinder 41, and the supply valve plate 23 and the discharge valve plate 33 connected to the connecting portion 43 are moved in the directions of arrows B1 and B2. Can be linked.

  As shown in FIG. 1, the supply hole 5 formed in the side wall 21 b of the supply inner pipe 21 and the discharge hole 6 formed in the side wall 31 b of the discharge inner pipe 31 are positioned in opposite directions. Specifically, the supply hole 5 is directed to the right in FIG. 1, the discharge hole 6 is directed to the left, and the two are turned to each other with reference to the axial direction of the supply flow path 3 and the discharge flow path 4. Open in the direction. Due to such a configuration, the interlocking means 40 blocks the discharge channel 4 when opening the supply channel 3, and blocks the supply channel 3 when opening the discharge channel 4. It becomes possible.

  In the dispenser 1 shown in the embodiment, the supply valve 20 is arranged at the lower part and the discharge valve 30 is arranged at the upper part. In a conventional dispenser in which a supply valve is arranged at the upper part and a discharge valve is arranged at the lower part, when a solution is supplied from the upper part to the cylinder, bubbles may be mixed into the valve together with the solution. Since the air contained in the bubbles has a property of rising due to a temperature rise due to compression, the conventional dispenser may not be able to discharge a certain amount of solution under the influence of bubbles mixed in the valve. Therefore, the dispenser 1 according to the embodiment has the supply valve 20 at the lower part and the discharge valve 30 at the upper part, so that even if bubbles of the solution are mixed in the valve, the dispenser 1 can be easily discharged to the outside.

  Hereinafter, an operation example of the dispenser 1 configured as described above will be described with reference to FIGS. 2 to 5. Although not illustrated, the solution may be a liquid resin having a curable property, and is not particularly limited.

  In order to store the solution in the cylinder 2, the interlocking means 40 shown in FIG. 2 is operated to slide the piston 42 in the direction of the arrow B1. Accordingly, the supply valve plate 23 and the discharge valve plate 33 connected to the connecting portion 43 are moved in the arrow B1 direction in conjunction with each other.

  As shown in FIG. 3A, when the inner wall 33a of the discharge valve plate 33 having a cylindrical cavity contacts the discharge hole 6, the discharge hole 6 is closed and the discharge flow path 4 communicating with the discharge nozzle 9 is blocked. . On the other hand, as shown in FIG. 3B, when the inner wall 23a of the supply valve plate 23 having a cylindrical cavity contacts the side wall 21b of the supply inner pipe 21 by the above-described interlocking, the supply hole 5 is opened and the supply flow path 3 is opened.

  As shown in FIG. 2, the expansion / contraction means 10 is operated, the ball screw 11 is rotated by driving the pulse motor 12, and the moving base 14 is moved, whereby the cylinder 2 is extended in the direction of the arrow A1. Then, a suction force is generated inside the stretched cylinder 2. At the same time, when the solution is supplied from the container 8 to the supply flow path 3, the solution flows into the flow path 70 through the supply hole 5 and is stored in the cylinder 2 by suction force.

  At this time, since the solution flowing into the cylinder 2 does not slide with the inner surface of the cylinder 2 having the bellows structure, friction does not occur and the solution does not harden. Further, since the discharge hole 6 is closed, the solution does not flow toward the discharge nozzle 9 and no dripping occurs.

  In order to discharge the solution stored in the cylinder 2 to the outside from the discharge nozzle 9, the interlocking means 40 shown in FIG. 4 is operated, and the piston 42 is slid in the direction of arrow B2. Accordingly, the supply valve plate 23 and the discharge valve plate 33 connected to the connecting portion 43 are moved in the arrow B2 direction in conjunction with each other.

  As shown in FIG. 5A, when the inner wall 33a of the discharge valve plate 33 having a cylindrical cavity comes into contact with the side wall 31b of the discharge inner pipe 31, the discharge hole 6 is opened, and the discharge nozzle 9 shown in FIG. The communicating discharge flow path 4 is opened. On the other hand, when the inner wall 23a of the supply valve plate 23 having a cylindrical cavity comes into contact with the supply hole 5, as shown in FIG. 5 (b), the supply hole 5 is closed, as shown in FIG. Supply channel 3 is blocked.

  As shown in FIG. 4, the expansion / contraction means 10 is operated, the ball screw 11 is rotated by driving the pulse motor 12, and the moving base 14 is moved, so that the cylinder 2 is contracted by a specified distance in the arrow A2 direction. . Then, the solution stored inside the cylinder 2 is pushed out into the flow path 70, and the pushed solution flows into the discharge flow path 4, passes through the discharge holes 6, and is discharged from the discharge nozzle 9 to the outside.

  Thus, in the dispenser 1, since the cylinder 2 has a bellows structure and is formed in a cylindrical shape, the inner surface of the cylinder 2 and the solution do not slide, so that friction does not occur and the solution is cured. There is no. Further, since the supply valve 20 and the discharge valve 30 can be alternately opened and closed by the interlocking means 40 and efficiently switched between the supply state and the discharge state, no dripping occurs.

  Note that the inside of the cylinder 2 is formed of a material having a small friction coefficient, for example, a fluororesin such as Teflon (registered trademark). Therefore, friction can be prevented from occurring between the cylinder 2 and the resin can be discharged efficiently.

  Further, the dispenser 1 may be configured to be turned upside down, the supply valve may be disposed at the top, the discharge valve may be disposed at the bottom, and the solution supplied from above may be discharged downward.

DESCRIPTION OF SYMBOLS 1: Dispenser 2: Cylinder 2a: Upper part 2b: Bottom part 3: Supply flow path 4: Discharge flow path 5: Supply hole 6: Discharge hole 7: Connection plate 70: Flow path 8: Container 9: Discharge nozzle 10: Extending means 11 Ball screw 12: Pulse motor 13: Bearing
14: Moving substrate 20: Supply valve 21: Supply inner pipe 21a: Upper end 21b: Side wall 22: Supply outer pipe 23: Supply valve plate 23a: Inner wall 30: Discharge valve 31: Discharge inner pipe 31a: Upper end 31b: Side wall 32 : Discharge outer pipe 33: Discharge valve plate 33a: Inner wall 40: Interlocking means 41: Air cylinder 42: Piston 43: Connection part

Claims (3)

Cylinder for storing and discharging the solution, expansion / contraction means for expanding and contracting the cylinder, supply channel for supplying the solution to the cylinder, supply valve for opening and closing the supply channel, and discharging the solution from the cylinder In a dispenser comprising a discharge flow path and a discharge valve for opening and closing the discharge flow path,
The supply valve comprises a supply inner pipe and a supply outer pipe surrounding the supply inner pipe,
The supply outer pipe is provided with a supply valve plate having a cylindrical cavity with an inner diameter larger than the outer diameter of the supply inner pipe,
The supply inner pipe is sealed at the upper end, and a supply hole facing the inner wall of the cylindrical cavity of the supply valve plate is formed in the side wall near the upper end, and the width of the supply valve plate is formed wider than the width of the supply hole Has been
The discharge valve includes a discharge inner pipe, and a discharge outer pipe surrounding the discharge inner pipe.
The discharge outer pipe is provided with a discharge valve plate having a cylindrical cavity with an inner diameter larger than the outer diameter of the discharge inner pipe,
The discharge inner pipe is sealed at the upper end, and a discharge hole is formed in the side wall near the upper end so as to face the inner wall of the cylindrical cavity of the discharge valve plate. The discharge valve plate is wider than the discharge hole. Has been
The supply valve and the discharge valve are connected to the cylinder by being connected by a connecting plate,
The supply hole formed in the side wall of the supply inner pipe and the discharge hole formed in the side wall of the discharge inner pipe are in opposite directions;
The supply valve plate and the discharge valve plate are connected to interlocking means for simultaneously interlocking the supply valve plate and the discharge valve plate,
When the discharge hole is closed by separating and contacting the discharge valve plate with respect to the discharge hole and the supply valve plate with respect to the supply hole by the interlocking means, the supply hole is opened. When the discharge hole is opened, the supply hole is closed,
After operating the interlocking means and opening the supply valve and closing the discharge valve, operating the expansion and contraction means to store the solution in the cylinder, operating the interlocking means and closing the supply valve and opening the discharge valve, A dispenser that allows a predetermined amount of solution to be discharged from the cylinder by operating the expansion / contraction means for a specified distance.   The dispenser according to claim 1, wherein the supply valve is disposed at a lower portion and the discharge valve is disposed at an upper portion to facilitate air bleeding of the supply passage, the cylinder, and the discharge passage. The cylinder has a bellows structure and is formed in a cylindrical shape. The upper surface of the cylinder is connected to the connecting plate to join the supply flow path and the discharge flow path, and the bottom surface of the cylinder is used as the expansion and contraction means. Connect
2. The dispenser according to claim 1, wherein the expansion / contraction means can expand and contract the cylinder in a direction parallel to the central axis of the cylinder.

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