JP2012081418A - Mixing and discharging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mixing and discharging device capable of sufficiently mixing a reagent and continuously discharging the reagent with sufficiently high discharge precision.SOLUTION: The mixing and discharging device for mixing the reagent inside a cylinder 11 and discharging is provided with a piston 15 for a part of itself to be inserted into a base end part of a cylinder 11, to be rotated with a stirring rod 17 connected to the piston 15 itself to stir the reagent when rotation force is given and to be advanced and moved to discharge the reagent from a discharging port 133 at the tip of the cylinder 11 when pushing force is given, a rotation force giving mechanism 40 for giving the driving force of a motor M to the piston 15 as the rotation force, a pushing force giving mechanism 50 for giving the driving force of the motor M to the piston 15 as the pushing force and a switching mechanism 60 for transmitting the driving force of the motor M to one of the rotation force giving mechanism 40 and the pushing force giving mechanism 50.

Description

  The present invention relates to a mixed discharge device.

  Conventionally, the following devices are known as devices for mixing and discharging a plurality of reagents. That is, it is a mixing / discharging device that mixes the reagent delivered from each syringe body by one-hand operation by bringing the reagent into contact with each other and ejects the reagent from the ejection port (for example, see Patent Document 1).

  However, such a mixing and discharging device cannot be said to have sufficiently high discharging accuracy due to manual work, and since only the reagents are brought into contact with each other and mixed, at least one of the reagents is powder or high In the case of a viscous liquid, there is a possibility that it cannot be sufficiently mixed.

  On the other hand, in order to demonstrate high discharge accuracy, a round bar-shaped piston having a notch at the tip is moved up by a pulse motor to suck a predetermined amount of reagent, and this piston is rotated 180 ° to move down. There has been proposed a device that discharges the reagent inhaled in (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 56-152641 JP 2002-192044 A

  However, in the one proposed in Patent Document 2, since a predetermined amount of reagent is discharged by a series of vertical movements of the piston, only intermittent discharge in which the reagent is intermittently discharged by a predetermined amount can be performed. It was difficult to continuously discharge the reagent.

  In view of the above circumstances, an object of the present invention is to provide a mixing and discharging device that can sufficiently mix a reagent and can continuously discharge the reagent while having sufficiently high discharge accuracy.

  In order to achieve the above object, a mixed discharge device according to claim 1 of the present invention is a mixed discharge device that mixes and discharges a reagent inside a cylinder, and a part of itself is inserted into a base end portion of the cylinder. When a rotational force is applied, the reagent is rotated together with the stirring rod connected to itself to stir the reagent. On the other hand, when a pressing force is applied, the reagent moves forward to discharge the tip of the cylinder. A piston that discharges the reagent from the outlet, a rotational force applying mechanism that applies a driving force of the motor as a rotational force to the piston, a pressing force applying mechanism that applies the driving force of the motor as a pressing force to the piston, and the motor And a switching mechanism that transmits the driving force to either the rotational force applying mechanism or the pressing force applying mechanism.

  According to a second aspect of the present invention, there is provided the mixing and discharging apparatus according to the first aspect, wherein the stirring rod is held in a state where the base end portion is inserted through the insertion hole of the piston, and the amount of advance movement of the piston is The protrusion length from the piston is reduced in accordance with the increase of.

  According to the mixing and discharging apparatus of the present invention, the piston provided in a mode in which a part of itself is inserted into the proximal end portion of the cylinder receives the rotational force from the rotational force applying mechanism to which the driving force of the motor is transmitted by the switching mechanism. In the case of being applied, the reagent is rotated together with the stirring rod connected to itself to stir the reagent, so that the reagent inside the cylinder can be sufficiently mixed. On the other hand, when the pressing force is applied by the pressing force applying mechanism to which the driving force of the motor is transmitted by the switching mechanism, the piston moves forward and discharges the reagent from the discharge port at the tip of the cylinder. In addition to sufficiently high discharge accuracy, the reagent can be continuously discharged by adjusting the amount of advance movement. Therefore, the reagent can be sufficiently mixed, and the reagent can be continuously discharged while having sufficiently high discharge accuracy.

FIG. 1 is a side view showing a mixing and discharging apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view showing the syringe unit before being mounted in FIG. FIG. 3 is a perspective view showing a state in which the injection cap is moved forward from the state shown in FIG. FIG. 4 is a perspective view showing a state where a protective cap is attached to the syringe unit shown in FIG. FIG. 5 is a plan view of the mixing and discharging apparatus shown in FIG. 6 is a longitudinal sectional view of the mixing and discharging apparatus shown in FIG. FIG. 7 is a plan view of the mixing and discharging apparatus in a state where the pressing force is applied by the pressing force applying mechanism. FIG. 8 is a longitudinal sectional view of the mixing and discharging apparatus shown in FIG.

  Exemplary embodiments of a mixing and discharging apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a side view showing a mixing and discharging apparatus according to an embodiment of the present invention. The mixing and discharging apparatus exemplified here includes a syringe unit 10 and a driving force transmission unit 30.

  The syringe unit 10 includes a cylinder 11 and a piston 15. FIG. 2 is a perspective view showing the syringe unit 10 before being mounted in FIG. The configuration of the syringe unit 10 will be described using FIG. 2 as appropriate.

  The cylinder 11 is formed of, for example, a resin material, and includes a cylinder body 12 and a discharge port forming portion 13. The cylinder body 12 is a substantially cylindrical portion that constitutes the body portion of the cylinder 11, and an insertion opening that allows the piston 15 to be inserted is formed at the base end thereof. The discharge port forming portion 13 constitutes a tip portion of the cylinder 11 and is a portion to which a protective cap 14 (see FIG. 1) is attached. The discharge port forming portion 13 is provided in a form of a cylindrical reduced diameter portion 131 (see FIG. 6) having a smaller diameter than the inner diameter of the cylinder main body 12 and a front protruding from the reduced diameter portion 131. It has a cylindrical small diameter portion 132 (see FIG. 6) having a smaller diameter than the portion 131, and the distal end opening of the small diameter portion 132 constitutes the discharge port 133. In the illustrated example, a bottomed cylindrical cap 24 is attached to the discharge port forming portion 13. As a result, the discharge port 133 is closed.

  The piston 15 is formed of, for example, a resin material, and has its own tip portion inserted into the cylinder body 12 through the insertion opening. A rubber ring 16 having an X-shaped cross section is attached to the tip of the piston 15.

  A plurality of (two in the illustrated example) stirring rods 17 are provided so as to protrude from the front end surface of the piston 15. More specifically, a part of the stirring rod 17 is provided through the insertion hole 18 of the piston 15. The tip portion of the stirring rod 17 is in contact with the inner end surface of the boundary portion between the cylinder body 12 and the discharge port forming portion 13. The depth of the insertion hole 18 of the piston 15 is approximately equal to the length of the stirring rod 17.

  A storage portion 19 is provided inside the piston 15. The storage portion 19 is a portion that is sealed when the spout 20 formed on the distal end surface of the piston 15 is closed by a rubber seal member 21 and the injection port 22 on the proximal end side is closed by an injection cap 23. is there. A reagent is sealed in the storage portion 19 as will be described later.

  The injection cap 23 is a rod-shaped member that is inserted from an insertion hole 151 that opens to the proximal end surface of the piston 15, and a distal end portion closes the injection port 22. Here, the distal end portion of the injection cap 23 has a size that is necessary and sufficient to close not only the injection port 22 but also the spout 20, and its periphery so that it can pass through the spout 20. There is a rubber ring.

  The injection cap 23 is formed with fin portions 231 that protrude in directions opposite to each other in a region from the center portion to the base end portion. The fin portion 231 is sized so as to be able to enter the locking groove 152 formed in the insertion hole 151 of the piston 15. The depth of the locking groove 152 is adjusted so that the tip of the injection cap 23 closes the spout 20 when the tip surface of the fin portion 231 comes into contact with the bottom surface of the locking groove 152. is there.

  Such mounting of the syringe unit 10 is performed as follows. As a premise, an arbitrary reagent (hereinafter also referred to as “A” for convenience of description) is sealed inside the cylinder 11, and an arbitrary reagent (hereinafter also referred to as “B” for convenience of description) is stored in the storage portion 19 of the piston 15. It shall be enclosed. Here, since the spout 20 is blocked by the seal member 22, the agent A and the agent B do not come into contact with each other, and the material can be prevented from being deteriorated and deteriorated due to the contact.

  As shown in FIG. 3, the injection cap 23 is rotated about 90 ° around the central axis so that the fin portion 231 can enter the locking groove 152, and the tip surface of the fin portion 231 is placed at the bottom of the locking groove 152. The base end is pressed until it comes into contact. As a result, the fin portion 231 enters the locking groove 152 and moves forward with respect to the piston 15. As a result of such a movement, the tip of the injection cap 23 passes through the closed inlet 22 and enters the storage portion 19, and the spout 20 is closed by the pressure of the storage portion 19. The seal member 21 enters the cylinder 11. Thereby, the inside of the cylinder 11 and the inside of the storage portion 19 communicate with each other through the spout 20, and the B agent in the storage portion 19 is mixed into the cylinder 11.

  Then, when the tip surface of the fin portion 231 of the pouring cap 23 that moves forward contacts the bottom of the locking groove 152, the tip portion of the pouring cap 23 reaches the spout 20 and closes the spout 20. As a result, all of the B agent initially sealed in the storage unit 19 is mixed into the cylinder 11.

  Thereafter, the cap 24 for closing the discharge port 133 is removed, the protective cap 14 is attached as shown in FIG. 4, and the syringe unit 10 in a state where the A agent and the B agent are mixed inside the cylinder 11, A part of the cylinder 11 (cylinder body 12) is attached to the device frame 1, and a part of the piston 15 (base end part of the injection cap 23) is connected to the coupler 44, whereby the syringe unit 10 is mounted (FIG. 1). reference).

  5 is a plan view of the mixing and discharging apparatus shown in FIG. 1, and FIG. 6 is a longitudinal sectional view of the mixing and discharging apparatus shown in FIG. The driving force transmission unit 30 includes a rotational force applying mechanism 40, a pressing force applying mechanism 50, and a switching mechanism 60.

  The rotational force imparting mechanism 40 imparts the driving force of the motor M to the piston 15 of the syringe unit 10 as rotational force, and includes a stirring shaft 41 and a coupler 44.

  The stirring shaft 41 is disposed in the device frame 1 via a bearing (not shown) in a manner that allows the stirring shaft 41 to rotate about its own axis, and is provided with a stirring shaft gear 42 at the base end. A first agitation gear 43 is provided.

  The coupler 44 holds a part of the piston 15 of the syringe unit 10 (the base end portion of the injection cap 23) as described above, and is a bearing (not shown) in such a manner that it can rotate around its own axis. It is attached to the device frame 1 via A second stirring gear 45 is provided at the base end of the coupler 44. The second stirring gear 45 meshes with the first stirring gear 43.

  The pressing force applying mechanism 50 applies the driving force of the motor M to the piston 15 of the syringe unit 10 as a pressing force, and includes a slide screw 51, a nut 52, and a plunger 53.

  The slide screw 51 is disposed on the device frame 1 via a bearing 54 in a manner that allows the slide screw 51 to rotate about its own axis, and a slide screw gear 55 is provided at the base end. The tip of the slide screw 51 passes through the through hole 46 of the coupler 44, and the tip protrudes slightly from the holding portion forming surface 441 of the coupler 44.

  The nut 52 is screwed with the slide screw 51, and a support rod 56 disposed in parallel with the slide screw 51 is provided in such a manner as to pass through its own support hole (not shown). As a result, the nut 52 can move linearly along the tip of the slide screw 51 when the slide screw 51 rotates about its own axis.

  Plunger 53 has a proximal end portion coupled to nut 52 and is provided in a manner to cover the distal end portion of slide screw 51. The distal end portion of the plunger 53 passes through the through hole 46 of the coupler 44, and the distal end slightly protrudes from the holding portion forming surface 441 of the coupler 44. Between the plunger 53 and the coupler 44, a bearing (not shown) that allows the linear movement of the plunger 53 while allowing the coupler 44 to rotate is interposed.

  The switching mechanism 60 includes a switching gear 61 and a switch 62. The switching gear 61 is provided so as to penetrate through the stirring shaft 41, and always meshes with the pinion 63 of the motor M. The changeover switch 62 engages the changeover gear 61 with either the stirring shaft gear 42 or the sliding screw gear 55 in accordance with an operation input given to itself.

  In the mixing and discharging apparatus according to the embodiment of the present invention having the above-described configuration, the reagents (A agent and B agent) are mixed and discharged as follows.

  First, mixing of the reagent will be described. As shown in FIGS. 5 and 6, when the changeover switch 62 is operated, the changeover gear 61 is engaged with the pinion 63 and the agitation shaft gear 42. Thereby, the rotation of the pinion 63 due to the drive of the motor M is transmitted to the stirring shaft gear 42 via the switching gear 61, and the stirring shaft 41 is also rotated by the rotation of the stirring shaft gear 42. The first agitation gear 43 is also rotated by the rotation of the agitation shaft 41, and the second agitation gear 45 that meshes with the first agitation gear 43 is rotated. The coupler 44 is rotated by the rotation of the second stirring gear 45, and thereby a rotational force is applied to the injection cap 23 held by the coupler 44. That is, the driving force of the motor M is transmitted to the syringe unit 10 as a rotational force.

  As described above, since the fin portion 231 of the injection cap 23 enters the locking groove 152 of the piston 15, the rotational force transmitted to the injection cap 23 is applied to the piston 15, and the piston 15 has its own central axis. Rotate around. At this time, the piston 15 slides inside the cylinder body 12, but since the rubber ring 16 is attached to the tip of the piston 15, the airtightness inside the cylinder 11 can be secured.

  Then, by the rotation of the piston 15, the stirring rod 17 provided in a manner of being inserted into the insertion hole 18 of the piston 15 rotates integrally with the piston 15, and thereby the reagents (A agent and B agent) inside the cylinder 11. ) Can be stirred and the reagent can be mixed well.

  Moreover, although not explicitly shown in the drawing, the rubber seal member 21 that initially closed the spout 20 is inside the cylinder 11 and coupled with the stirring of the stirring rod 17 itself. The stirring effect of the reagent can be further improved by rolling inside.

  Next, the ejection of the reagent will be described. As shown in FIGS. 7 and 8, when the changeover switch 62 is operated, the changeover gear 61 is engaged with the pinion 63 and the slide screw gear 55. Thereby, the rotation of the pinion 63 by driving the motor M is transmitted to the sliding screw gear 55 via the switching gear 61, and the sliding screw 51 is also rotated by the rotation of the sliding screw gear 55. As the slide screw 51 rotates, the nut 52 that is screwed with the nut 52 moves linearly toward the tip of the slide screw 51, so that the plunger 53 that is coupled to the nut 52 also moves linearly in the direction protruding from the coupler 44. A pressing force is applied to the cap 23. That is, the driving force of the motor M is transmitted to the syringe unit 10 as a pressing force.

  As described above, since the tip surface of the fin portion 231 of the injection cap 23 is in contact with the bottom of the locking groove 152 of the piston 15, the pressing force transmitted to the injection cap 23 is applied to the piston 15. , Move forward with respect to the cylinder 11. At this time, the piston 15 slides inside the cylinder body 12, but since the rubber ring 16 is attached to the tip of the piston 15, the airtightness inside the cylinder 11 can be secured.

  Although the stirring rod 17 is provided inside the cylinder 11, as described above, the depth of the insertion hole 18 of the piston 15 is substantially equal to the length of the stirring rod 17, so that the movement of the advance movement of the piston 15 is increased. The insertion amount of the stirring rod 17 into the insertion hole 18 can be increased according to the amount. Thereby, the protrusion length from the piston 15 of the stirring rod 17 can be made small according to the increase in the advancing movement amount of the piston 15.

  The reagent inside the cylinder 11 can be discharged from the discharge port 133 by the advance movement of the piston 15, and the discharge amount is determined according to the advance movement amount of the piston 15. Therefore, the reagent can be continuously discharged with sufficiently high discharge accuracy.

  Therefore, according to the mixing and discharging apparatus according to the embodiment of the present application, the reagent can be sufficiently mixed, and the reagent can be continuously discharged while having sufficiently high discharge accuracy.

  In the mixing and discharging apparatus, since the mixing and discharging of the reagent are performed inside the cylinder 11, it is not necessary to perform the mixing and mixing and discharging in separate steps, and the operational convenience can be improved. And since discharge can be performed continuously, the highly reactive reagent with a short pot life can be used.

  Furthermore, since stirring and mixing and discharge can be performed with the same drive source (motor M), the number of parts can be reduced and the cost can be reduced.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made.

  In the above-described embodiment, the syringe cap 10 is mounted after the injection cap 23 is pressed and moved forward, and two types of reagents are mixed into the cylinder 11, but in the present invention, two types of reagents are used. The syringe unit 10 is mounted in a state before mixing, and by applying a pressing force by the pressing force applying mechanism 50, the injection cap 23 is pressed and moved forward, and two types of reagents are mixed inside the cylinder 11. You may let them.

  As described above, the mixed discharge device according to the present invention is useful for mixing and discharging the reagent inside the cylinder.

DESCRIPTION OF SYMBOLS 10 Syringe unit 11 Cylinder 133 Discharge port 14 Protection cap 15 Piston 17 Stirring rod 18 Insertion hole 19 Storage part 20 Outlet 21 Sealing member 22 Inlet 23 Injection cap 30 Driving force transmission unit 40 Rotation force provision mechanism 41 Stirring shaft 42 Stirring shaft Gear 43 First stirring gear 44 Coupler 45 Second stirring gear 50 Pressurizing mechanism 51 Sliding screw 52 Nut 53 Plunger 55 Sliding screw gear 56 Support rod 60 Switching mechanism 61 Switching gear 62 Switching switch M Motor

Claims (2)

In the mixing and discharging device that mixes and discharges the reagent inside the cylinder,
It is provided in such a manner that a part of itself is inserted into the base end portion of the cylinder, and when a rotational force is applied, it is rotated with a stirring rod connected to the cylinder to stir the reagent while a pressing force is applied. A piston that moves forward and discharges the reagent from the discharge port at the tip of the cylinder,
A rotational force imparting mechanism that imparts a driving force of a motor to the piston as a rotational force;
A pressing force applying mechanism that applies a driving force of the motor as a pressing force to the piston;
A mixing and discharging apparatus comprising: a switching mechanism that transmits a driving force of the motor to either the rotational force applying mechanism or the pressing force applying mechanism.   The stirring rod is held in a state in which a base end portion is inserted through an insertion hole of the piston, and a protruding length from the piston is reduced according to an increase in an advance movement amount of the piston. 2. The mixed discharge device according to 1.

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