Dispenser

Abstract

To provide a dispenser capable of facilitating attaching / detaching of a nozzle block and saving space when a plurality of dispensers are arranged in parallel.SOLUTION: This dispenser comprises: a dispenser body 1; and a nozzle block 3 detachably fitted to the dispenser body 1. The nozzle block 3 is provided with first and second slopes 35 and 36 that respectively abut on first and second connection pins 17 and 18 to slide a pair of sliders 16 toward an other side S2 in a sliding direction S when the nozzle block is moved upward from directly below the pair of sliders 16 to be fitted between the sliders 16, and first and second engagement recesses 37 and 38 respectively engaged with the first and second connection pins 17 and 18 passed through the first and second slopes 35 and 36.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a dispenser that dispenses a liquid material. [Background technology]

[0002] Dispensers that dispense liquid materials such as water, oil, and resin are used in various fields, including semiconductor processing and the medical field. In semiconductor processing in particular, dispensers are often used in the underfill process, and also for filling the inside of semiconductor element packages with resin. In the manufacturing process of LED elements, dispensers are used in the process of applying fluorescent liquid, which is a mixture of fluorescent material and resin, to LED chips.

[0003] Known dispensers for discharging liquid material in this manner include those that discharge the liquid material from a nozzle by the reciprocating motion of a tappet, and Patent Document 1 discloses a dosing system (dispenser) that can detachably connect a fluid unit (nozzle block) including a tappet and a nozzle to an actuator unit (dispenser body) including an actuator for reciprocating the tappet. Making the fluid unit (nozzle block) detachable has the advantage of facilitating maintenance work such as cleaning the tappet and nozzle included in the fluid unit (nozzle block).

[0004] However, in the dosing system (dispenser) of Patent Document 1, when attaching or detaching the fluid unit (nozzle block) to or from the actuator unit (dispenser body), the fluid unit (nozzle block) needs to be rotated. This makes it time-consuming to attach or detach the fluid unit (nozzle block), and when multiple dosing systems (dispensers) are arranged in parallel, they need to be arranged in parallel with at least a gap large enough to allow the fluid units (nozzle blocks) to rotate, which requires a large installation space. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special Publication No. 2020-534145 Summary of the Invention [Problem to be solved by the invention]

[0006] The problem to be solved by the present invention is to provide a dispenser in which the nozzle block can be easily attached and detached, and in which space can be saved when a plurality of dispensers are arranged in parallel. [Means for solving the problem]

[0007] According to one aspect of the present invention, there is provided a dispenser comprising: A dispenser comprising a dispenser body and a nozzle block detachably attached to the dispenser body, The nozzle block comprises: a nozzle for discharging a liquid material; a supply flow path for supplying a liquid material to the nozzle; a tappet whose tip reciprocates in the up and down direction within the supply flow path, The dispenser body includes: a displacement magnifying mechanism that applies a displacement to the tappet; an actuator that applies a displacement to the displacement magnifying mechanism; a pair of sliders arranged opposite to each other with the nozzle block in between, and slidable in a horizontal direction; a first connecting pin that is provided along a direction perpendicular to the sliding direction of the pair of sliders and connects the pair of sliders to each other on one side in the sliding direction; a second connecting pin that is provided along a direction perpendicular to the sliding direction of the pair of sliders and connects the pair of sliders to each other on the other side of the sliding direction; a first biasing member that elastically biases the pair of sliders toward one side in the sliding direction, Furthermore, the nozzle block a first inclined portion and a second inclined portion that come into contact with the first connecting pin and the second connecting pin, respectively, to slide the pair of sliders toward the other side in the sliding direction when the sliders are moved upward from directly below the pair of sliders to be attached between the pair of sliders; a first engaging recess and a second engaging recess that are respectively provided below the first inclined portion and the second inclined portion and that engage with the first connecting pin and the second connecting pin that have passed through the first inclined portion and the second inclined portion, Dispenser. [Effects of the Invention]

[0008] According to the present invention, the nozzle block can be attached to and detached from the dispenser body by moving the nozzle block in the vertical direction. Therefore, the nozzle block can be easily attached and detached, and space can be saved when multiple dispensers are arranged in parallel. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of a dispenser according to an embodiment of the present invention, viewed from one side; [Figure 2A] FIG. 2 is a side view of a main part of the dispenser of FIG. 1. [Figure 2B] FIG. 2 is a longitudinal cross-sectional view of a main part of the dispenser of FIG. 1. [Figure 2C] 2 is a perspective view of the main part of the dispenser of FIG. 1 as seen from the bottom side. FIG. [Figure 3] FIG. [Figure 4] 2C is a perspective view showing the main part of the dispenser body as viewed from the bottom side (a perspective view showing a state in which the nozzle block 3 has been removed from the state shown in FIG. 2C). [Figure 5] FIG. 2D is a perspective view in which one of the pair of sliders in FIG. 2C is omitted. [Figure 6] 10A to 10C are schematic vertical cross-sectional views conceptually showing a procedure for attaching and detaching the nozzle block to and from the dispenser body. DETAILED DESCRIPTION OF THE INVENTION

[0010] Fig. 1 shows a perspective view of a dispenser according to one embodiment of the present invention as seen from one side. Fig. 2A, Fig. 2B, and Fig. 2C show a side view, a vertical cross-sectional view, and a perspective view from below of the main parts of the dispenser shown in Fig. 1, respectively. Fig. 3 shows a perspective view of the nozzle block alone. The dispenser of this embodiment includes a dispenser body 1 and a nozzle block 3 that is detachably attached to the dispenser body 1.

[0011] The dispenser body 1 has a shape in which both sides of the main frame 11 are covered with covers 111, and various components described below are installed inside the covers 111. The top surface of the main frame 11 is provided with a power supply terminal 12 for supplying power to the various components installed inside the main frame 11, as well as an air inlet 13A and an air outlet 13B for introducing and discharging cooling air into and from the main frame 11.

[0012] The nozzle block 3 is detachably attached to the underside of the main frame 11. The nozzle block 3 includes a block body 31, a nozzle 32 that ejects the liquid material, a supply flow path 33 that supplies the liquid material to the nozzle 32, and a tappet 34 whose tip reciprocates up and down within the supply flow path 33. The nozzle 32 is attached to the nozzle attachment portion 311 on the lower surface side of the block body 31 by a nozzle nut 321 . The supply flow path 33 is formed in the block body 31 so as to communicate between the nozzle 32 and a liquid material inlet 312 provided on the upper surface of the block body 31. The liquid material is introduced into the liquid material inlet 312 from a tank (not shown) that stores the liquid material. The tappet 34 is held by a tappet holder 341, and the tappet holder 341 holding this tappet 34 is attached to a tappet attachment hole 112 (see FIG. 4) provided on the underside of the main frame 11 of the dispenser body 1, with the upper end of the tappet 34 held by the tappet holder 341 protruding into the main frame 11. Also, a biasing member 342 is incorporated in the tappet holder 341 to elastically bias the tappet 34 upward. The biasing member 342 can be, for example, a compression coil spring.

[0013] As shown in FIG. 2B, the dispenser body 1 further includes, in the main frame 11, a displacement magnifying mechanism 14 that applies a displacement to the tappet 34, and an actuator 15 that applies a displacement to the displacement magnifying mechanism 14. The displacement magnifying mechanism 14 includes a fulcrum portion 141 and a lever 142. The fulcrum portion 141 is cylindrical and fixed to the main frame 11. The lever 142 is rotatably installed around the fulcrum portion 141, with the lower surface of one end contacting the upper end of the tappet 34 and the upper surface of a portion between this end and the fulcrum portion 141 and close to the fulcrum portion 141 contacting the lower end of the actuator 15. The upper surface of the other end of the lever 142 is in contact with the lower end of a biasing member 143 that elastically biases the other end of the lever 142 downward. The biasing member 142 can be, for example, a compression coil spring. In this way, the displacement magnification mechanism 14 is a "lever mechanism" with the center of rotation of the lever 142 around the fulcrum portion 141 as the fulcrum, the contact surface between the lever 142 and the lower end of the actuator 15 as the force point, and the point at which the lever 142 presses the tappet 34 as the point of action, and has the function of magnifying the amount of vertical displacement of the tappet 34 more than the amount of vertical displacement of the actuator 15. The actuator 15 applies a vertical displacement to the displacement magnification mechanism 14, and as a result, is used as a drive source for reciprocating the tappet 34 in the vertical direction, and may be a motor, air, a piezoelectric element, or the like. In this embodiment, a piezoelectric element is used.

[0014] As shown in Figure 1 and Figures 2A to 2C, the dispenser body 1 is further provided with a pair of sliders 16 that are arranged opposite each other so as to sandwich the block body 31 of the nozzle block 3 and are slidable in the horizontal direction, a first connecting pin 17 that is provided along a direction perpendicular to the sliding direction S of the pair of sliders 16 and connects the pair of sliders 16 to each other on one side S1 of the sliding direction S, a second connecting pin 18 that is provided along a direction perpendicular to the sliding direction S of the pair of sliders 16 and connects the pair of sliders 16 to each other on the other side S2 of the sliding direction S, and a first biasing member 19 that elastically biases the pair of sliders 16 towards one side S1 of the sliding direction S. A pair of elongated holes 161 extending along the sliding direction S are provided on one side S1 of the pair of sliders 16 in the sliding direction S, and guide pins 20 provided on the main frame 11 of the dispenser body 1 are inserted into the pair of elongated holes 161. A slider block 162 is provided on the other side S2 of the pair of sliders 16 in the sliding direction S, and this slider block 162 is slidably placed on the upper surface of a guide plate 21 provided on the main frame 11 of the dispenser body 1. The first biasing member 19 elastically biases the pair of sliders 16 toward the one side S1 of the sliding direction S via the slider block 162. Therefore, the pair of sliders 16 are normally positioned so that the ends of the pair of elongated holes 161 on the other side S2 of the sliding direction S abut against the guide pins 20. The first biasing member 19 may be, for example, a compression coil spring.

[0015] Fig. 4 shows a perspective view of the main part of the dispenser body 1 as seen from the bottom side. Fig. 4 corresponds to the state in Fig. 2C where the nozzle block 3 has been removed. Fig. 5 shows the state in Fig. 2C where one of the pair of sliders 16 has been omitted. The nozzle block 3, as will be described in detail later, further comprises a first inclined portion 35 and a second inclined portion 36 that abut against the first connecting pin 17 and the second connecting pin 18, respectively, to slide the pair of sliders 16 toward the other side S2 of the sliding direction S when moved upward from directly below the pair of sliders 16 to be attached between the pair of sliders 16, and a first engaging recess 37 and a second engaging recess 38 that are provided below the first inclined portion 35 and the second inclined portion 36, respectively, and that engage with the first connecting pin 17 and the second connecting pin 18 that have passed through the first inclined portion 35 and the second inclined portion 36, respectively. The dispenser body 1 further includes guide pins 22 which engage with vertical guide grooves 313 provided on both side surfaces of the block body 31 of the nozzle block 3, respectively, to guide the vertical movement of the nozzle block 3.

[0016] Furthermore, the dispenser body 1 is equipped with a plate member 23 that is movable in the vertical direction, and a second biasing member 24 that elastically biases the plate member 23 downward. As shown in Fig. 2B, when the nozzle block 3 is attached to the dispenser body 1, the lower surface of the plate member 23 elastically abuts against the upper surface of the block body 31 of the nozzle block 3. Note that the second biasing member 24 can be, for example, a compression coil spring. The dispenser body 1 further includes a heater member 25 attached to the plate member 23 .

[0017] Next, the operation of the dispenser X will be described. When the tip of the tappet 34 moves upward through the supply flow path 33, which is filled with the liquid material introduced through the liquid material introduction section 312, the liquid material is supplied to the vicinity of the nozzle 32. At this time, an appropriate back pressure is applied to the liquid material introduced into the liquid material introduction section 312 depending on the properties of the liquid material, such as its viscosity. In this embodiment, the dispenser body 1 includes a heater member 25 attached to a plate member 23 that elastically contacts the upper surface of the block body 31 of the nozzle block 3. The heater member 25 heats the liquid material in the supply flow path 33 and maintains it at a predetermined temperature. The predetermined temperature is set appropriately depending on the properties of the liquid material, such as its viscosity, and can be, for example, a temperature selected from a temperature range of approximately 30 to 80°C. In other words, the heater member 25 has a temperature adjustment function in addition to a heating function.

[0018] When the tip of the tappet 34 moves in the supply flow path 33 in a direction approaching the nozzle 32, that is, in a downward direction, the pressure of the liquid material in the vicinity of the nozzle 32 increases, causing the liquid material to be discharged. Thereafter, when the tip of the tappet 34 moves upward within the supply flow path 33, the liquid material is again supplied near the nozzle 32, and when the tip of the tappet 34 moves further downward within the supply flow path 33, the liquid material is ejected from the nozzle 32. In this way, the tip of the tappet 34 moves back and forth up and down within the supply flow path 33, causing the liquid material to be ejected intermittently from the nozzle 32.

[0019] Next, a procedure for attaching and detaching the nozzle block 3 to and from the dispenser body 1 will be described mainly with reference to Fig. 6. Fig. 6 conceptually shows, in a schematic vertical cross-sectional view, the procedure for attaching and detaching the nozzle block 3 to and from the dispenser body 1. That is, Fig. 6 is basically a vertical cross-sectional view, but some of the internal structure of the block body 31 of the nozzle block 3 and the internal structure of the tappet holder 341 are omitted or simplified. When the nozzle block 3 is attached to the dispenser body 1, as shown in Fig. 6(a), the nozzle block 3 is positioned directly below the pair of sliders 16 and then moved upward from that position. Specifically, although not shown in Fig. 6, the nozzle block 3 is moved upward so that the vertical guide grooves 313 provided on both side surfaces of the block body 31 of the nozzle block 3 are engaged with the guide pins 22 provided on the main frame 11 of the dispenser body 1. As a result, the first inclined portion 35 and the second inclined portion 36 of the nozzle block 3 come into contact with the first connecting pin 17 and the second connecting pin 18, respectively, which connect the pair of sliders 16 together, and by moving the nozzle block 3 upward, the pair of sliders 16 slide toward the other side S2 in the sliding direction S (see Figure 6(b)). Thereafter, when the nozzle block 3 is further moved upward, the first connecting pin 17 and the second connecting pin 18 pass through the first inclined portion 35 and the second inclined portion 36 and engage with the first engagement recess 37 and the second engagement recess 38 provided below the first inclined portion 35 and the second inclined portion 36, respectively (FIGS. 6(c) to 6(d)). That is, when the first connecting pin 17 and the second connecting pin 18 pass through the first inclined portion 35 and the second inclined portion 36, immediately thereafter, the pair of sliders 16 slide toward one side S1 in the sliding direction S due to the biasing force of the first biasing member 19, whereby the first connecting pin 17 and the second connecting pin 18 engage with the first engagement recess 37 and the second engagement recess 38, respectively, and the nozzle block 3 is attached between the pair of sliders 16, as shown in FIG. 6(d). At this time, the tappet holder 341 is fitted into the tappet mounting hole 112 formed on the underside of the main frame 11 of the dispenser body 1, and the upper end of the tappet 34 held by the tappet holder 341 protrudes into the main frame 11.

[0020] 2B, in a state in which the nozzle block 3 is mounted between the pair of sliders 16, the lower surface of the plate member 23, which is provided on the dispenser body 1 so as to be able to move in the up and down direction, elastically abuts against the upper surface of the block body 31 of the nozzle block 3 due to the biasing force of the second biasing member 24. This stably holds the position of the nozzle block 3 and suppresses vibration of the nozzle block 3.

[0021] On the other hand, when removing the nozzle block 3 from the dispenser body 1, the pair of sliders 16 are slid from the state shown in Figure 6(d) toward the other side S2 in the sliding direction S to disengage the first connecting pin 17 and the second connecting pin 18 from the first engaging recess 37 and the second engaging recess 38, and then the nozzle block 3 is moved downward.

[0022] In this manner, in this embodiment, by moving the nozzle block 3 in the vertical direction, it can be attached to and detached from the dispenser body 1. Therefore, the nozzle block 3 can be easily attached and detached, and space can be saved when multiple dispensers are arranged in parallel. [Explanation of symbols]

[0023] X Dispenser 1 Dispenser body 11 Mainframe 111 Cover 112 Tappet mounting hole 12 Power terminal 13A Air intake 13B Air exhaust section 14 Displacement magnification mechanism 141 Fulcrum 142 Lever 143 biasing member 15 Actuators 16 Sliders 161 long hole 162 Slider Block 17 First connecting pin 18 Second connecting pin 19 First biasing member 20 guide pin 21 Guide plate 22 Guide pin 23 Plate member 24 second biasing member 25 Heater element 3 Nozzle Block 31 Block body 311 Nozzle mounting part 312 Liquid material introduction section 313 Guide groove 32 nozzles 321 Nozzle nut 33 Supply channel 34 Tappet 341 Tappet holder 342 biasing member 35 1st slope part 36 2nd slope part 37 First engagement recess 38 Second engagement recess

Claims

1. A dispenser comprising a dispenser body and a nozzle block detachably attached to the dispenser body, The nozzle block comprises: a nozzle for discharging a liquid material; a supply flow path for supplying a liquid material to the nozzle; a tappet whose tip reciprocates in the up and down direction within the supply flow path, The dispenser body includes: a displacement magnifying mechanism that applies a displacement to the tappet; an actuator that applies a displacement to the displacement magnifying mechanism; a pair of sliders arranged opposite to each other with the nozzle block in between, and slidable in a horizontal direction; a first connecting pin that is provided along a direction perpendicular to the sliding direction of the pair of sliders and connects the pair of sliders to each other on one side in the sliding direction; a second connecting pin that is provided along a direction perpendicular to the sliding direction of the pair of sliders and connects the pair of sliders to each other on the other side in the sliding direction; a first biasing member that elastically biases the pair of sliders toward one side in the sliding direction, Furthermore, the nozzle block a first inclined portion and a second inclined portion that come into contact with the first connecting pin and the second connecting pin, respectively, to slide the pair of sliders toward the other side in the sliding direction when the sliders are moved upward from directly below the pair of sliders to be attached between the pair of sliders; a first engaging recess and a second engaging recess that are respectively provided below the first inclined portion and the second inclined portion and that engage with the first connecting pin and the second connecting pin that have passed through the first inclined portion and the second inclined portion, Dispenser.

2. The dispenser according to claim 1 , wherein the dispenser body further includes guide pins that engage with vertical guide grooves provided on both side surfaces of the nozzle block to guide vertical movement of the nozzle block.

3. The dispenser body further includes a plate member that is movable in the up and down direction, and a second biasing member that elastically biases the plate member downward, 3. The dispenser according to claim 1, wherein a lower surface of the plate member elastically abuts on an upper surface of the nozzle block when the nozzle block is attached to the dispenser body.

4. The dispenser of claim 3 , wherein the dispenser body further includes a heater element attached to the plate element.

Images