Liquid material dispensing device

Abstract

[Problem] To provide a liquid material discharge device capable of compactly constituting a device size while allowing a liquid contact part to be attached to a body part without positional deviation. [Solution] This liquid material discharge device comprises: a body part 20 having an operation shaft 61 and a drive device 22 for driving the operation shaft 61; a liquid contact part 30 having a liquid chamber 62 and a liquid feed passage 34 for supplying a liquid material to the liquid chamber 62; and a liquid contact part connector 50 for detachably connecting the liquid contact part 30 to the body part 20. The liquid contact part 30 comprises an insertion part 323 in which a first screw groove 324 is formed on at least a part of a side surface. The liquid contact part connector 50 comprises: a rotary member 51 in which a second screw groove 511 to be screwed with the first screw groove 324 is formed; and a rotary member holder 52 for rotatably supporting the rotary member 51. The tip end of the insertion part 323 is inserted into the rotary member 51 to rotate the rotary member 51, whereby the liquid contact part 30 is raised and fixed to the body part 20.

Description

Technical Field

[0001] The present invention relates to a discharging device for discharging a liquid material, and more specifically, to a liquid material discharging device having a mechanism for separating or connecting a liquid contact portion and a main body portion. Note that the "discharging" in the present invention includes a discharging method in which the liquid material contacts the workpiece before separating from the discharge port, and a discharging method in which the liquid material contacts the workpiece after separating from the discharge port.

Background Art

[0002] As a conventional liquid material discharging device, a device having a structure including a main body portion provided with a liquid chamber communicating with a nozzle, an operating shaft driven in the liquid chamber, and a storage container provided on the side of the main body portion is known. Here, as the operating shaft, for example, a screw that rotates in the liquid chamber, a plunger rod having the same diameter as the liquid chamber that advances while sliding on the inner peripheral surface of the liquid chamber, and a rod having a smaller diameter than the liquid chamber that moves back and forth without sliding on the inner peripheral surface of the liquid chamber (for example, the valve rod 105 in Patent Document 1) are known.

[0003] When performing maintenance work such as replacement work of consumables such as liquid materials and nozzles and cleaning on the liquid material discharging device having the above structure, the liquid contact portion and various components are removed from the main body portion. However, at that time, accidents such as the liquid contact portion and various components falling had occurred. Therefore, the applicant proposed in Patent Document 2 to provide a holder to which a housing including a discharging member detachably connected to a driving portion is detachably attached, and a movable member that moves vertically along the housing while being attached to the housing, and by moving the movable member vertically, the discharging member and the driving portion can be made detachable to solve the problem of falling.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] In liquid material dispensing devices that have a structure in which the wetted parts can be attached to and detached from the main body, it is necessary to add a mechanism for attaching the wetted parts to the main body, which presents challenges such as an increase in the overall size of the device and an increase in the weight of the device. Furthermore, there is a problem in that misalignment of the wetted parts can occur when attaching them to the main body. In particular, in jet-type dispensing devices (jet dispensers) that eject droplets by moving a rod (operating shaft) with a smaller diameter than the liquid chamber back and forth, as described in Patent Document 1 above, misalignment of the mounting position greatly affects the dispensing accuracy.

[0006] The present invention aims to provide a liquid material dispensing device that allows the wetted parts to be attached to the main body without misalignment, while also enabling a compact device size. [Means for solving the problem]

[0007] The liquid material dispensing device of the present invention is comprised of the following technical means. [1] A liquid material dispensing device that dispenses a liquid material by the action of an operating shaft driven in a liquid chamber, comprising: a main body having the operating shaft and a drive device for driving the operating shaft; a wetted part having the liquid chamber and a liquid supply passage for supplying liquid material to the liquid chamber; and a wetted part connector for detachably connecting the wetted part to the main body, wherein the wetted part has an insertion portion having a first screw groove formed on at least a part of its side surface, and the wetted part connector comprises a rotating member having a second screw groove that engages with the first screw groove, and a rotating member holder that rotatably supports the rotating member, wherein the wetted part rises and is fixed to the main body by inserting the tip of the insertion portion into the rotating member and rotating the rotating member. [2] The liquid material dispensing device according to [1], wherein the insertion portion is provided with a straight groove extending vertically on the side surface, and the rotating member holder is provided with a guide that fits into the straight groove. [3] The liquid material dispensing device according to [2], wherein the wetted part is positioned horizontally with respect to the main body by fitting the guide and the straight groove. [4] The liquid material dispensing device according to [2], wherein the diameter of the rotating member is longer than the length of the short side of the main body, and the rotating member holder comprises a pair of rotating member holders provided along the longitudinal direction of the main body, and the pair of rotating member holders clamp the rotating member such that the side surface of the rotating member in a direction perpendicular to the longitudinal direction is exposed. [5] The liquid material dispensing device according to [4], wherein the pair of rotating member holders each have an arc-shaped inner surface and the guide is formed on the inner surface. [6] The liquid material dispensing device according to [2], wherein the linear groove includes a plurality of linear grooves provided opposite to each other, and the guide includes a plurality of guides that fit into the plurality of linear grooves. [7] The liquid material dispensing device according to [2], wherein the linear grooves include a plurality of linear grooves, and the number of linear grooves is greater than the number of guides. [8] The liquid material dispensing device according to [2], wherein the straight grooves include a first straight groove and a second straight groove arranged to form an acute, right, or obtuse angle, and the horizontal angle of the wetted part with respect to the main body can be adjusted by fitting one of the first and second straight grooves with the guide. [9] The liquid material dispensing device according to [2], wherein the straight grooves include first to third straight grooves provided at equal intervals on half of the side surface of the insertion portion, and the horizontal angle of the wetted portion with respect to the main body can be adjusted by fitting one of the first to third straight grooves with the guide.

[10] The insertion portion comprises an arc-shaped first side surface on which the first screw groove is formed and a second side surface consisting of a plane extending in the vertical direction, and the rotating member holder comprises a plane that makes surface contact with the second side surface when fixing the wetted portion to the main body. [1] Liquid material dispensing device.

[11] The liquid material dispensing device according to any one of [1] to

[10] , wherein the insertion portion has a flat upper end surface, and the wetted portion connector is fixed in a state in which the upper end surface and the bottom surface of the main body are in surface contact.

[12] A liquid material dispensing device according to

[11] , wherein a first guide portion is formed on the upper end surface of the insertion portion, and a second guide portion that engages with the first guide portion is formed on the bottom surface of the main body portion.

[13] The liquid material dispensing device according to any one of [1] to

[12] , wherein the wetted part comprises a connector for connecting a storage container and a liquid transport member having the liquid transport passage formed therein.

[14] The liquid material dispensing device according to

[13] , wherein the main body portion comprises a storage container holder for holding the storage container connected to the connector, and when the screwing of the first screw groove and the second screw groove is released, the wetted part is held by the storage container holder via the storage container.

[15] A liquid material dispensing device according to

[13] or

[14] , wherein, when the main body and the wetted part are fixed together, a gap of 20 mm or less is formed between the wetted part connector and the liquid transport member.

[16] A liquid material dispensing device according to any one of [1] to

[15] , which is a jet dispenser, screw dispenser, plunger dispenser or valve dispenser. [Effects of the Invention]

[0008] According to the present invention, it is possible to mount the wetted parts to the main body without misalignment while making the device compact in size. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of the liquid material dispensing device of the embodiment. [Figure 2] This is a perspective view showing the liquid material dispensing device of the embodiment with the wetted parts removed. [Figure 3] This is a perspective view of the rotating member of the embodiment. [Figure 4]It is a bottom view of the housing of the embodiment. [Figure 5] It is a side cross-sectional view of the main part of a liquid material ejection device including a cross-sectional view of the liquid contact part connector of the embodiment. [Figure 6] It is a side view of the main part of a liquid material ejection device including cross-sectional views of the liquid contact part connector, the liquid feed member, the nozzle attachment member, and the connector of the embodiment. [Figure 7] It is a diagram for explaining the insertion part of the nozzle attachment member of the embodiment, (a) is a plan view, (b) is a front view, and (c) is a side cross-sectional view of the main part. [Figure 8] It is a side view for explaining the operation (1) when removing the liquid contact part from the main body part. [Figure 9] It is a side view for explaining the operation (2) when removing the liquid contact part from the main body part. [Figure 10] It is a side view for explaining the operation (3) when removing the liquid contact part from the main body part. [Figure 11] It is a side view for explaining the operation (1) when attaching the liquid contact part to the main body part. [Figure 12] It is a side view for explaining the operation (2) when attaching the liquid contact part to the main body part. [Figure 13] It is a side cross-sectional view of the main part of FIG. 12. [Figure 14] It is a side view for explaining the operation (3) when attaching the liquid contact part to the main body part. [Figure 15] (a) A plan view of the insertion part of the nozzle attachment member according to the first modification example, (b) a plan view of the insertion part of the nozzle attachment member according to the second modification example. [Figure 16] It is a perspective view of the liquid contact part connector according to the third modification example. [Figure 17] (a) A bottom view of the rotating member holder according to the fourth modification example, (b) a side cross-sectional view of the rotating member holder, (c) a plan view of the insertion part. [Figure 18] (a) A bottom view of the rotating member holder according to the fifth modification example (b) a side cross-sectional view of the rotating member holder, (c) a plan view of the insertion part.

Mode for Carrying Out the Invention

[0010] The following describes examples of embodiments for carrying out the present invention. <Structure> The discharge device 10 according to this embodiment, as shown in Figures 1 and 2, mainly consists of a main body 20 and a wetted part 30, and relates to a jet-type discharge device (jet-type dispenser) that ejects liquid material as droplets from a discharge port 43. Within the housing that constitutes the main body 20, an operating shaft drive device 22 is located at the position shown by the dotted line, and moves the operating shaft 61, which will be described later, forward and backward. The operating shaft drive device 22, which is not shown, is composed of, for example, two actuators arranged side by side in the longitudinal direction of the arm connected to the operating shaft 61 (see Figure 1 of Patent Document 1).

[0011] A storage container holder 23 is provided on the top surface of the housing 21. The storage container holder 23 has a roughly C-shaped claw portion 23a at one end of a plate-shaped member, and the claw portion 23a holds the side surface of the storage container 71. In addition, a connector 24 for connecting cables and the like is provided on the top of the housing 21.

[0012] A wetted parts connector 50 is detachably mounted on the bottom surface 211 of the housing 21 on the storage container 71 side by screws or the like. The wetted parts connector 50 consists of a rotating member 51 and a rotating member holder 52. As shown in Figure 3, the rotating member 51 is an annular member with a helical screw groove 511 formed on its inner circumferential surface. This groove 511 is formed to screw into a helical screw groove 324 formed on the outer circumferential surface of the insertion portion 323 of the nozzle mounting member 32. Multiple side through holes 512 are formed on the side surface of the rotating member 51. These side through holes 512 are used, for example, to insert a rod-shaped tool when tightening or loosening the rotating member 51.

[0013] Figure 4 is a bottom view of the housing 21 of the embodiment. As shown in Figure 4, the rotating member 51 is rotatably held by a rotating member holder 52. The rotating member holder 52 has a pair of hook-shaped support parts 521 extending toward the center of the rotating member 51, and the rotating member 51 is positioned so that its side surface is exposed between the support parts 521 and the housing bottom surface 211. The pair of support parts 521, arranged along the longitudinal direction of the housing 21, clamp the rotating member 51 to prevent it from falling. The outer diameter of the rotating member 51 is set to be longer than the short side of the housing 21 to facilitate rotational operation during attachment and detachment. The inner circumferential surface 522 of the support part 521 is arc-shaped and is formed to a size that can receive the insertion part 323 of the nozzle mounting member 32. A convex guide 523 is formed on the inner circumferential surface 522 of the support part 521. The guide 523 is formed in a position to fit into a straight groove 325 formed on the outer circumferential surface of the insertion part 323, which will be described later. The guide 523 is cylindrical in shape and extends horizontally, and its lower side surface allows for smooth engagement with the straight groove 325. In this embodiment, the guide 523 is provided at the center in the vertical and horizontal directions of the support portion 521 located further away from the storage container 71, but the guide may also be provided on the support portion 521 located closer to the storage container 71. Since the guide 523 is provided in the path of the insertion portion 323, the positioning mechanism for the wetted portion 30 is realized without increasing the size of the device.

[0014] Figure 5 is a side view of the main part of the liquid material dispensing device 10, including a cross-sectional view of the wetted part connector 50 of the embodiment. As shown in Figure 5, when the wetted part 30 is attached to the main body 20, the storage container 71 is positioned upright to the side of the housing 21. The annular upper end surface 323a of the insertion part is fixed in surface contact with the bottom surface 211 of the housing. A gap G is provided between the bottom surface of the rotating member holder 52 and the nozzle mounting member 32 and the second liquid transport member 312 so as to be always non-contact. This gap G ensures contact between the upper end surface 323a of the insertion part and the bottom surface 211 of the housing. Since the wetted part 30 is positioned with the flat upper end surface 323a of the insertion part and the flat bottom surface 211 of the housing in surface contact, it is possible to attach the wetted part 30 without misalignment. In order to make the device size compact, it is preferable to set the gap G to 20 mm or less, for example, in the range of 1 to 10 mm or 0.5 to 5 mm.

[0015] Figure 6 is a side view of the main parts of a liquid material dispensing device 10, including cross-sectional views of the wetted part connector 50, liquid transport member 31, nozzle mounting member 32, and connector 33 of an embodiment. As shown in Figure 6, the nozzle mounting member 32 comprises a mounting portion 321 extending downward, a body portion 322 located in the center in the vertical direction, and a cylindrical insertion portion 323 extending upward. A through hole extending in the vertical direction is formed inside the nozzle mounting member 32, and is divided into a liquid chamber 62 and an upper space 64 by an annular seal 63. The liquid material filling the liquid chamber 62 is blocked by the seal 63 and does not reach the upper space 64. An operating shaft 61, which is driven within the liquid chamber 62, is inserted through the seal 63. The operating shaft 61 is a rod-shaped member (rod) with a smaller diameter than the liquid chamber 62, and since there is no sliding resistance with the liquid chamber 62, it can reciprocate at high speed by the operating shaft drive device 22.

[0016] A nozzle member 41 having a nozzle 42 is detachably attached to the mounting portion 321 of the nozzle mounting member 32. A valve seat 44 with a through hole in the center is disposed between the lower end of the mounting portion 321 and the inner bottom surface of the nozzle member 41. The valve seat 44 can be easily replaced by removing the nozzle member 41 from the mounting portion 321 of the nozzle mounting member 32.

[0017] A liquid delivery member 31 having a liquid delivery passage 34 is detachably connected to the side of the body portion 322 of the nozzle mounting member 32. One end of the liquid delivery passage 34 is provided on the side of the liquid chamber 62, and the liquid delivery passage 34 is connected to the storage container 71. The liquid transport member 31 comprises a first liquid transport member 311 with a liquid transport passage 34a formed therein, and a second liquid transport member 312 with a liquid transport passage 34b formed therein. The first liquid transport member 311 and the second liquid transport member 312 are detachably connected and can be disassembled for maintenance of the liquid transport passage 34. The first liquid transport member 311 has a connector holder portion 311a extending upward, and a connector 33 is rotatably held in the connector holder portion 311a. A storage container 71 is detachably connected to the connector 33.

[0018] Figure 7 is a drawing showing only the insertion portion 323 of the nozzle mounting member 32, where (a) is a plan view, (b) is a front view, and (c) is a side cross-sectional view of the main part. As shown in Figures 7(a) and (b), the upper surface of the insertion portion 323 is composed of an annular plane. As shown in Figure 7(b), the upper part 323b of the insertion portion 323 has a smaller diameter than the lower part 323c in order to facilitate insertion into the rotating member 51 and the rotating member holder 52. As shown in Figures 7(b) and (c), at least a portion of the outer circumferential surface (side circumferential surface) of the insertion portion 323 has a helical screw groove 324 and a straight groove 325 that extends vertically, traversing the helical screw groove 324. As shown in Figure 7(c), the upper end of the straight groove 325 is open, but a groove bottom surface 325a is formed at the lower end. Note that the lower end of the straight groove 325 may be open without a groove bottom surface 325a. By fitting the straight groove 325 with the guide 523 provided by the rotating member holder 52, the position of the wetted part 30 in the direction of rotation (horizontal direction) when it is installed is determined, and the wetted part 30 is prevented from rotating unnecessarily when it is raised.

[0019] <Removal procedure> Referring to Figures 8 to 10, the procedure for removing the wetted part 30 from the main body 20 will be explained. When the rotating member 51 is rotated in the loosening direction, the wetted part 30 moves downward due to the action of the helical grooves 324 and 511 (see Figure 8). When the rotating member 51 is rotated further in the loosening direction, the wetted part 30 moves further downward, and the engagement of the helical grooves 324 and 511 is released (see Figure 9). Once the engagement of the helical grooves 324 and 511 is released, the wetted part 30 can be removed from the main body 20 by moving the storage container 71 downward along the storage container holder 23, as shown in Figure 10. From another perspective, even if the engagement of the helical grooves 324 and 511 is released, the claw portion 23a of the storage container holder 23 holds the storage container 71, so even if the hand holding the wetted part 30 slips, the wetted part 30 can be prevented from falling. Thus, removing the wetted part 30 from the main body 20 only requires rotating the rotating member 51 in the tightening direction, and there is no need to prepare any special tools.

[0020] <Installation Procedure> Referring to Figures 11 to 14, the procedure for attaching the wetted part 30 to the main body 20 will be explained. With the operating shaft 61 inserted into the seal 63, the insertion portion 323 is inserted into the inner circumferential surface of the rotating member 51 so that the guide 523 fits into the straight groove 325 (see Figure 11). When the rotating member 51 is rotated in the tightening direction in this state, the wetted part 30 moves upward due to the action of the helical grooves 324 and 511 (see Figure 12). Figure 13 is a side cross-sectional view of the main part of Figure 12. As shown in Figure 13, when the wetted part 30 is installed, the guide 523 is fitted into the straight groove 325, so the rotation of the wetted part 30 is prevented. When the rotating member 51 is rotated further in the tightening direction, the wetted part 30 moves further upward, and the annular upper end surface 323a of the insertion portion 323 and the bottom surface 211 of the housing come into surface contact and are positioned (see Figure 14). Thus, attaching the wetted part 30 to the main body 20 only requires rotating the rotating member 51 in the tightening direction, and there is no need to prepare any special tools.

[0021] As described above, the wetted part connector 50 of this embodiment makes it possible to realize a connector mechanism that does not increase the size of the device by using a nut-shaped rotating member 51 and a rotating member holder 52 that supports it. Furthermore, when the wetted part 30 is installed, the annular upper end surface 323a of the insertion part 323 and the bottom surface 211 of the housing are in contact with each other to position it, resulting in excellent fixation and no misalignment. Furthermore, by fitting the straight groove 325 and the guide 523 together, it is possible to attach the wetted part 30 to the main body 20 while precisely defining the position in the direction of rotation. Furthermore, since the wetted parts 30 can be removed and installed simply by rotating the rotating member 51, the burden of disassembly and assembly work for maintenance can be reduced.

[0022] <First variation> Figure 15(a) is a plan view of the insertion portion 1323 according to the first modified example. The insertion portion 1323 shown in Figure 15(a) is similar to the insertion portion 323 shown in Figure 7 in that it has an annular planar upper end surface 1323a and a helical screw groove 424 formed on the side surface of the insertion portion 1323. Also the same as the insertion portion 323 shown in Figure 7 in that the through hole provided in the insertion portion 1323 is separated into a liquid chamber 62 and an upper space 64 by a seal 63. The insertion portion 1323 according to the first modified example differs from the insertion portion 323 in that it has a pair of opposing straight grooves 1325a and 1325b. In the first modified example, the rotating member holder 52 also has a pair of guides (not shown) at positions corresponding to the straight grooves 1325a and 1325b. According to the first modified example, by fitting together multiple guides and straight grooves 1325a and 1325b, it is possible to appropriately determine the rotational position of the wetted part 30 when it is installed and to prevent the wetted part 30 from rotating when it is raised.

[0023] <Second variation> Figure 15(b) is a plan view of the insertion portion 2323 according to the second modified example. The insertion section 2323 shown in Figure 15(b) differs from the insertion section 323 shown in Figure 7 in that it has five straight grooves 2325a to 2325e provided at equal intervals on the left half, but is otherwise identical. The insertion section 2323 of the second modified example is used in combination with one guide 523 shown in Figures 2 and 4. When the storage container 71 is placed on the long axis of the housing 21 as shown in Figure 1, the straight groove 2325c and the guide 523 can be fitted together. Alternatively, by fitting the straight groove 2325b or 2325d with the guide 523, the storage container 71 can be positioned at a 45-degree angle from the long axis of the housing 21. Similarly, by fitting the straight groove 2325a or 2325e with the guide 523, the storage container 71 can be positioned at a 90-degree angle from the long axis of the housing 21. According to the second modified insertion section 2323, when there are constraints on the space for arranging the liquid material dispensing device 10, the position of the storage container 71 can be easily adjusted by combining a straight groove selected from the straight grooves 2325a, 2325b, 2325d, and 2325e with the guide 523.

[0024] In the second modified example, an insertion section having five straight grooves is illustrated, but the number of straight grooves is not limited to five, and any number of straight grooves (for example, 2, 3, 4, 7, 8, 9, or 10) can be provided. In other words, if the insertion section includes first and second straight grooves arranged to form acute, right, or obtuse angles, it is possible to adjust the horizontal angle of the wetted part relative to the main body. Furthermore, if the insertion section includes first to third straight grooves provided at equal intervals on half of the side surface, it is possible to adjust the horizontal angle of the wetted part relative to the main body in three stages. In the second modified example as well, multiple guides 523 (for example, two) may be provided, and multiple straight grooves may be fitted together with multiple guides 523 for use.

[0025] <Third variation> Figure 16 is a perspective view of the wetted part connector 650 according to the third modified example. The wetted part connector 650 according to the third modified example comprises a rotating member 651 and a rotating member holder 652. The rotating member 651 is identical to the rotating member 51 shown in Figure 3. The rotating member 651 is rotatably held by the rotating member holder 652. The rotating member holder 652 differs from the rotating member holder 52 shown in Figure 3 only in the shape of the guide 623. A convex guide 623 is formed on the inner circumferential surface 622 of the support portion 6521 of the rotating member holder 652. The guide 623 is formed in a position to fit into a straight groove 325 formed on the outer circumferential surface of the insertion portion 323. The guide 523 is an elliptical column extending horizontally, and is positioned so that its major axis coincides with the vertical direction, allowing for smooth fitting with the straight groove 325 by its lower side circumferential surface. In this embodiment, the guide 623 is provided at the center in the left-right direction of the support portion 6521, which is located further away from the storage container 71. Since the guide 623 is provided in the path of the insertion portion 323, the size of the rotating member holder 652 is the same as the rotating member holder 52 shown in Figure 3. In the third variation example, an embodiment with one guide 623 is disclosed, but an embodiment with multiple guides is also possible, as in the first and second modifications.

[0026] <Fourth variation> Figure 17(a) is a bottom view of the rotating member holder 752 according to the fourth modified example, (b) is a side cross-sectional view, and (c) is a plan view of the insertion part. Elements with the same configuration as in the embodiment are denoted by the same reference numerals and their descriptions are omitted. As shown in Figures 17(a) and (b), the rotating member holder 752 according to the fourth modified example is equipped with hook-shaped support portions 721a and 721b that clamp the rotating member 51. The support portion 721a has an arc-shaped inner circumferential surface 722a, similar to the support portion 621 shown in Figure 4. On the other hand, the support portion 721b, which is provided opposite the support portion 721a, has a flat support portion guide surface 722b.

[0027] As shown in Figure 17(c), the insertion part 723, which is inserted into the space formed by the support parts 721a and 721b, has an arc-shaped first side surface 724 with a screw groove and a second side surface (insertion part guide surface) 725 consisting of a plane extending in the vertical direction. The insertion part guide surface 725 is provided at a position where it is in surface contact with the support part guide surface 722. By attaching the wetted part with the insertion part guide surface 725 and the support part guide surface 722b of the support part in surface contact, it is possible to properly position the wetted part and prevent the wetted part from rotating when the wetted part is raised.

[0028] <Fifth variation> Figure 18 shows (a) a bottom view of the housing bottom surface 711 according to the fifth modified example, (b) a side cross-sectional view, and (c) a plan view of the insertion part. Elements with the same configuration as in the embodiment are denoted by the same reference numerals and their descriptions are omitted. As shown in Figures 18(a) and (b), similar to the housing 21 of the embodiment, the housing 710 has an operating shaft 61 extending downward from the center position of the rotating member holder 52 on the housing bottom surface 711. On the side of the operating shaft 61 facing the center of the housing, there is a first guide portion 761 which is a protrusion extending downward from the housing bottom surface 711. The outer circumference of the illustrated first guide portion 761 is circular when viewed from the bottom, but it may have other shapes, for example, a polygonal or elliptical outer circumference. The tip of the first guide portion 761 may be made rounded to facilitate fitting with the second guide portion, which will be described later.

[0029] As shown in Figure 18(c), the upper end surface 823a of the insertion portion 823 that abuts against the bottom surface 711 of the housing is provided with a second guide portion 824, which is a recess corresponding to the first guide portion 761. When the rotating member 51 is rotated and the annular upper end surface 823a of the insertion portion 823 and the bottom surface 711 of the housing come into surface contact, the first guide portion 761 is fitted into the second guide portion 824 of the insertion portion. Positioning by fitting the first guide portion 761 and the second guide portion 824 makes it possible to properly position the wetted part when installing it and to more effectively prevent the wetted part from rotating when raising it. In the illustrated example, a configuration is disclosed in which a straight groove 825 and a guide (not shown), which is a protrusion provided on the inner circumferential surface of the support portion 521, are fitted into the insertion portion 823, but the straight groove 825 and the guide on the inner circumferential surface of the support portion 521 do not necessarily have to be provided.

[0030] The configuration of the fifth modified example can also be applied by combining the first to third modified examples. Here, if the storage container 71 is positioned at a predetermined angle rotated from the long axis of the housing 21, as in the second modified example, it is necessary to provide a plurality of second guide portions on the upper end surface of the insertion portion, corresponding to the rotational configuration in which it is implemented. Alternatively, a first guide portion, which is a recess, may be provided on the bottom surface 711 of the housing, and a second guide portion, which is a protrusion that engages with the first guide portion, may be provided on the upper end surface of the insertion portion 823.

[0031] Although preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the embodiments described above. Various modifications and improvements can be made to the above embodiments, and such modified or improved forms are also included in the technical scope of the present invention.

[0032] For example, the operating shaft may be the screw of a screw-type dispenser that rotates within the liquid chamber, the plunger rod of a plunger-type dispenser that slides along the inner circumferential surface of the liquid chamber (metering hole) as it extends, or the valve rod of a valve-type dispenser that opens and closes a communication port on the bottom of the liquid chamber that communicates with the nozzle.

[0033] Furthermore, the outer circumference of the rotating member (51, 651) may be knurled for anti-slip purposes, or may be marked with letters, figures, symbols, etc., to visualize the number of rotations. Also, the outer circumference of the rotating member (51, 651) may have a shape other than circular. For example, the outer circumference of the rotating member may be made polygonal to visualize the number of rotations and improve operability. [Explanation of Symbols]

[0034] 10: Liquid material dispensing device, 20: Main body, 21: Housing, 22: Actuator shaft drive device, 23: Storage container holder, 24: Connector, 30: Wetted parts, 31: Liquid delivery member, 32: Nozzle mounting member, 33: Connector, 34: Liquid delivery path, 41: Nozzle member, 42: Nozzle, 43: Discharge port, 50: Wetted parts connector, 51: Rotating member, 52: Rotating member holder, 61: Actuator shaft (rod), 62: Liquid chamber, 63: Seal, 64: Upper space, 71: Storage container (syringe), 72: Adapter, 211: Housing bottom, 311: First liquid delivery member, 312: Second liquid delivery section Material, 321: Mounting part, 322: Body part, 323: Insertion part, 324: Screw groove (insertion part), 325: Straight groove, 511: Screw groove (rotating member), 512: Side through hole, 521: Support part, 522: Inner surface of support part, 523: Guide, 651: Rotating member, 652: Rotating member holder, 710: Housing, 711: Housing bottom surface, 721: Support part, 722: Support part guide surface, 724: First side surface, 725: Second side surface (insertion part guide surface), 752: Rotating member holder, 761: First guide part, 823: Insertion part, 824: Second guide part, 825: Straight groove

Claims

1. A liquid material dispensing device that dispenses a liquid material by the action of an operating shaft driven within a liquid chamber, A main body having the aforementioned operating shaft and a drive device for driving the operating shaft, A wetted part having the liquid chamber and a liquid supply passage for supplying liquid material to the liquid chamber, The main body is provided with a wetted part connector that detachably connects the wetted part to the main body, The wetted part includes an insertion portion in which a first screw groove is formed on at least a part of the side surface. The wetted part connector comprises a rotating member having a second screw groove that engages with the first screw groove, and a rotating member holder that rotatably supports the rotating member. A liquid material dispensing device in which the tip of the insertion part is inserted into the rotating member and the rotating member is rotated, causing the wetted part to rise and be fixed to the main body.

2. The insertion portion is provided with a straight groove extending vertically on its side surface. The liquid material dispensing device according to claim 1, wherein the rotating member holder is provided with a guide that fits into the straight groove.

3. The liquid material dispensing device according to claim 2, wherein the insertion portion is inserted upward into the inner circumference of the rotating member while the wetted portion is positioned horizontally relative to the main body portion by fitting the guide and the straight groove together.

4. The diameter of the rotating member is longer than the length of the shorter side of the main body. The rotating member holder comprises a pair of support parts provided along the longitudinal direction of the main body, The liquid material dispensing device according to claim 2, wherein the pair of support portions clamp the rotating member such that the side surfaces of the rotating member are exposed in a direction perpendicular to the longitudinal direction of the rotating member.

5. The liquid material dispensing device according to claim 4, wherein the pair of support portions each have an arc-shaped inner surface, and the guide is formed on at least one of the inner surfaces.

6. The aforementioned straight groove includes a plurality of straight grooves arranged opposite each other, The liquid material dispensing device according to claim 2, wherein the guide includes a plurality of guides that fit into the plurality of straight grooves.

7. The aforementioned straight groove includes a plurality of straight grooves, The liquid material dispensing device according to claim 2, wherein the number of straight grooves is greater than the number of guides.

8. The straight groove includes a first straight groove and a second straight groove arranged to form an acute, right, or obtuse angle, The liquid material dispensing device according to claim 2, wherein the horizontal angle of the wetted part with respect to the main body can be adjusted by fitting one of the first and second straight grooves with the guide.

9. The aforementioned straight grooves include first to third straight grooves provided at equal intervals on half of the side surface of the insertion portion, The liquid material dispensing device according to claim 2, wherein the horizontal angle of the wetted part with respect to the main body can be adjusted by fitting one of the first to third straight grooves with the guide.

10. The insertion portion comprises a first arc-shaped side surface on which the first screw groove is formed, and a second side surface consisting of a plane extending in the vertical direction. The liquid material dispensing device according to claim 1, wherein the rotating member holder has a plane that makes surface contact with the second side surface when fixing the wetted part to the main body.

11. The insertion portion has a flat upper end surface, The liquid material dispensing device according to claim 1, wherein the wetted part connector is fixed in a state where the upper end surface and the bottom surface of the main body are in surface contact.

12. A first guide portion is formed on the upper end surface of the insertion portion. The liquid material dispensing device according to claim 11, wherein a second guide portion that engages with a first guide portion is formed on the bottom surface of the main body portion.

13. The liquid material dispensing device according to claim 1, wherein the wetted part comprises a connector for connecting a storage container and a liquid transport member in which the liquid transport passage is formed.

14. The main body includes a storage container holder that holds the storage container connected to the connector, The liquid material dispensing device according to claim 13, wherein when the screwing of the first screw groove and the second screw groove is released, the wetted part is held by the storage container holder via the storage container.

15. The liquid material dispensing device according to claim 13, wherein, when the main body and the wetted part are fixed together, a gap of 20 mm or less is formed between the wetted part connector and the liquid transport member.

16. The liquid material dispensing device according to claim 1, wherein, when the wetted part is removed from the main body, the operating shaft extends downward from the center position of the rotating member holder.

17. A liquid material dispensing device according to any one of claims 1 to 16, wherein the dispenser is a jet-type dispenser, a screw-type dispenser, a plunger-type dispenser, or a valve-type dispenser.

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