TW201637730A - Joining structure for viscous liquid material discharging apparatus and viscous liquid material discharging apparatus using the same - Google Patents

Abstract

Provided are: a joining structure which is used in a viscous-liquid discharge device, is capable of improving sealing-attachment-structure following properties of a joining part for joining a liquid feed pipe means and a long flow path member, and is capable of completely inhibiting air infiltration into a joined section; and a viscous-liquid discharge device using said joining structure. The joining structure is used in a viscous-liquid discharge device in which only a plastic container can be exchanged after a discharge operation of the viscous liquid. In the joining structure, a sealing attachment means is provided with a flexible cylindrical insertion part. The flexible cylindrical insertion part is inserted into an inner through hole of the long flow path member from the upper end, and as a result the flexible cylindrical insertion part engages with the long flow path member.

Description

Joint structure for viscous liquid discharge device and viscous liquid discharge device using the same

The present invention relates to a joint structure for a discharge device having a sputum-type plastic container, which is a viscous liquid, particularly a hardenable composition having a moisture-curing type or an adhesive having an oxygen-curing type. The curable composition is contained in a flexible bag or container, and can be effectively used when the bag or the container is deformed and contracted by external pressure to discharge the internal viscous liquid to the outside.

Conventionally, in a device in which a viscous liquid such as a moisture-curing adhesive or an oxygen-curable adhesive is discharged for coating or the like, since the adhesive hardens when it comes into contact with air, if the adhesive scatters, it will scatter in it. The portion is directly hardened, and the occurrence of contamination or the like is lost, so the adhesive must be applied in a state where it is not exposed to the air.

For the apparatus which discharges and coats such a liquid which is in contact with the air, there are, for example, the apparatuses disclosed in Patent Documents 1 to 3.

This viscous liquid discharge device, as shown in Figure 6, is A device in which a viscous liquid such as an adhesive is ejected from the ejecting nozzle through the liquid supply tube means 104 by the elongate flow path member 102 provided in the plastic container 100 by pressurization. The plastic container 100 is disposed in the pressurizing tank 106, and the pressurized air is supplied into the pressurizing tank 106 through the air supply pipe 108.

The elongated flow path member 102 has an upper end mounting portion 114 for mounting to the opening portion 112 of the plastic container body 110. The lower end of the elongated flow path member 102 is formed with an open end portion 116, and a plurality of flow path holes 118 are formed on the side surface thereof. The viscous liquid 124 passing through the open end portion 116 or the flow path hole 118 passes through the elongated flow path portion 122 formed inside the elongated cylindrical pipe body 120 of the elongated flow path member 102, and is discharged from the liquid supply pipe means 104. The mouth is pressurized and spit out.

Further, the discharge device is provided with a so-called 匣 type plastic container in which only the plastic container 100 provided with the elongated flow path member 102 can be replaced after the viscous liquid is discharged. The plastic container 100 is usually shipped in a state of being loaded into a corrugated box. The form in which the plastic container 100 is placed in the corrugated box state is called a so-called bag in box.

Further, the base end portion of the liquid supply pipe means and the upper end attachment portion of the elongated flow path member provided in the plastic container are formed in a sealed state by the sealing and mounting means 126 as shown, for example, in FIGS. 7 and 8. .

The joint structure conventionally used for the viscous liquid discharge device is disclosed in Figs. 7 and 8. In FIGS. 7 and 8, the conventional joint structure 101 is a structure in which the joint mounting means 126 is joined in a sealed state. The sealing device 126 has a fixing member 128. The fixing member 128 has a cylindrical base 132 having a through opening 130 at a central portion thereof, and an annular flange portion 134 formed on the outer surface of the lower portion of the cylindrical base 132, and the cylindrical base 132 and the annular projection The lower surface of the edge portion 134 is formed to have a shape corresponding to the upper shape of the upper end mounting portion 114 of the elongated flow path member 102, and a seating step portion 136 is formed on the upper surface of the annular flange portion 134, and A male screw portion 138 is formed on the outer surface of the upper portion of the cylindrical base body 132.

A tapered portion 140 that is inclined inward is formed at a lower end portion of the cylindrical base 132. The 142 has a through-hole cover member, and a through hole 146 that abuts against the socket step portion 136 is opened at a central portion of the circular plate 144, and A female screw portion 150 is formed on the inner surface side of the annular side wall 148 which is suspended from the peripheral edge portion of the circular plate 144, and the female screw portion 150 is screwed to the cylindrical side wall 112a formed in the opening portion 112 of the plastic container body 110. The male thread portion 112b on the outside. 152 is a locking member having a cylindrical member 156 through which a center hole 154 is bored at a center portion, and a locking female screw portion 158 is formed at a lower portion of the inner circumferential surface of the cylindrical member 156. As shown in Fig. 7, the upper portion of the center hole 154 of the locking member 152 is formed in a form in which the diameter is gradually reduced upward. The through hole cover member 142 and the locking member 152 are combined in a manner as shown in Fig. 8(a).

Further, as shown in FIG. 7, an elongated flow path portion 122 that penetrates the flow path 159 as the elongated flow path member 102 is provided at the center portion. Further, the upper end mounting portion 114 has an inner peripheral wall 162 in which a liquid discharge port 160 is formed, and an outer peripheral wall 166 which is provided at a position separated from the inner peripheral wall 162 by a predetermined interval by the support wall 164. The inner peripheral wall 162 has an inner diameter in which the upper portion has a larger diameter than the lower portion, and the upper end surface of the inner peripheral wall forms a tapered portion 168 which is inclined inward. An outer peripheral step portion 170 that is bent outward is formed at an upper end portion of the outer peripheral wall 166. By fitting the outer peripheral step portion 170 to the outer peripheral edge portion of the opening portion 112 of the plastic container body 110, the elongated flow path member 102 can be self-contained. The opening portion 112 is mounted by a group unloading method. These configurations are described in detail, for example, in Patent Document 1.

However, in the conventional joint configuration, if the oblique flow force is applied to the elongated flow path member 102, since the fixing member 128 for engaging the liquid supply means 104 and the elongated flow path member 102 does not have a compliance with the joint portion, As shown in Fig. 8(b), there is a concern that the gap G is generated in the joint portion, and air is entered.

Further, in the discharge device which discharges the viscous liquid in the plastic container by pressurization, since a slight gap is left in the joint portion or the like, the pressurized air in the pressure tank enters, so that a high gas is required. Confidentiality. Therefore, the airtightness required is different from that of, for example, a discharge device that decompresses a plastic container in which a viscous liquid is sealed, thereby sucking and discharging a viscous liquid from the plastic container.

In this manner, in the pressurized discharge device that discharges the viscous liquid by pressurization, in particular, the viscous liquid is a moisture-curable adhesive or an oxygen-curable adhesive, and the viscous liquid that is in contact with air is prohibited. In the case where only a small amount of air is introduced into the joint portion or the like, air is mixed into the viscous liquid, and the trouble described below cannot be avoided.

In the case where the spouting nozzle is used as a coating nozzle for the nozzle coating operation, the air entering the viscous liquid flow path forms a discontinuous state in which the viscous liquid is discontinuous, and the viscosity applied at the time of nozzle coating is applied. The area where the liquid is defective. Further, when the syringe is filled from the discharge nozzle, the air that has entered the viscous liquid flow path is mixed into the syringe in the form of bubbles.

On the other hand, after the viscous liquid is spit out, in order to be able to It is necessary to replace the plastic container with the long flow path member and the so-called plastic container.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-188167

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2012-192343

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2012-223715

The present invention has been made in view of the problems of the above-described conventional coating device and the like, and has an object of providing an interface for joining a liquid supply pipe means and an elongated flow path member to improve the compliance of the sealing and mounting structure, and The joint structure of the viscous liquid discharge device that can completely prevent air from intruding into the joint portion and the viscous liquid discharge device using the structure.

In order to solve the above problems, the joint structure of the present invention for a viscous liquid discharge device is such that a plastic container is provided in the pressure tank, and the plastic container is installed to extend into the interior of the plastic container body and has a direction toward the long side. The long flow path member of the inner through hole is configured to discharge the viscous liquid in the plastic container from the elongated flow path member by pressurization, and to feed the liquid through the elongated flow path member and the sealing and mounting means. The pipe means is discharged from the spouting means, and after the discharging operation of the viscous liquid, only the plastic container can be replaced, and the sealing means has a genus The flexible cylindrical insertion portion is inserted into the internal through hole from the upper end portion of the elongated flow path member through the flexible cylindrical insertion portion, and the flexible cylindrical insertion portion is inserted into the flexible cylindrical insertion portion. It is locked to the aforementioned elongated flow path member.

Preferably, the engaging structure is provided with a locking portion in the flexible cylindrical insertion portion, and the elongated flow path member is provided with a locked portion that engages with the locking portion, and transmits the The flexible cylindrical insertion portion is inserted into the internal through hole from the upper end portion of the elongated flow path member, and the flexible cylindrical insertion portion is locked to the elongated flow path member.

In the above-described joint structure, the locking portion provided in the flexible cylindrical insertion portion is preferably a large-diameter portion formed on the insertion portion side of the flexible cylindrical insertion portion, and is provided in the elongated flow path. The locked portion of the upper end portion of the member is a small-diameter portion to be inserted into the inner through-hole of the elongated flow path member corresponding to the large-diameter portion of the insertion portion side.

In the joint structure, it is preferable that the thickness of the flexible cylindrical insertion portion is thinner than the thickness of the elongated flow path member, and the flexible cylindrical insertion portion has flexibility.

Preferably, the sealing structure includes a fixing member for fixing the elongated flow path member and the liquid supply tube means in an engaged state, and the flexible cylindrical insertion portion is formed to be locked. a lower end portion of the flexible cylindrical member fixed to the fixing member, the flexible cylindrical member having: a flexible cylindrical member; and a locking fixing portion for fixing the flexibility The cylindrical member body is locked and fixed to the fixing member and formed on the outer circumferential surface of the flexible cylindrical member body.

Preferably, the length of the flexible cylindrical insertion portion is such that the distal end portion of the flexible cylindrical insertion portion reaches the locked portion provided in the internal through hole of the elongated flow path member. length.

Preferably, the joint structure is such that the flexible cylindrical insertion portion and the liquid supply tube means are made of different materials and are formed separately.

Preferably, the joining structure is such that the inner diameter of the liquid feeding pipe means is larger than the outer diameter of the flexible cylindrical member body, and the inner peripheral surface of the lower end portion of the liquid feeding pipe means abuts against the flexible cylinder The outer peripheral surface of the body of the member.

Preferably, the joint structure is such that the outer diameter of the liquid supply pipe means is smaller than the inner diameter of the flexible cylindrical member body, and the outer peripheral surface of the lower end portion of the liquid supply pipe means abuts against the flexible cylinder The inner peripheral surface of the body of the member.

The elongate flow path member of the present invention is an elongated flow path member joined by the above-described joint structure.

Preferably, the elongated flow path member is a tubular body having one or more flow path holes formed in a side surface thereof.

The plastic container of the present invention is a plastic container in which the elongated flow path member is attached to a plastic container body.

The viscous liquid is preferably a curable composition having a moisture-curing adhesive property or a curable composition having an oxygen curable adhesive property.

The viscous liquid discharge device of the present invention has: a pressurized tank; a compressed air supply means for supplying compressed air into the pressurizing tank; The plastic container is disposed in the pressure tank; the liquid supply means has one end connected to the opening of the plastic container, and the discharge nozzle means is connected to the other end of the liquid supply means.

According to the present invention, it is possible to provide a viscous liquid for improving the compliance of the joint portion of the liquid supply pipe means and the elongated flow path member to the seal installation structure, and completely preventing air from intruding into the joint portion. The joint structure of the discharge device and the viscous liquid discharge device using the same can achieve a remarkable effect.

10A, 10B‧‧‧ joint structure

12, 110‧‧‧ plastic container body

13, 112‧‧‧ openings

14A, 14B‧‧‧Internal through holes

16A, 16B, 102‧‧‧ long flow path components

18, 100‧‧‧ plastic containers

20A, 20B, 126‧‧‧ Sealing and installation means

22A, 22B, 104‧‧‧ liquid delivery pipe means

24A, 24B, 24C‧‧‧Flexible cylindrical insert

26A, 26B, 26C‧‧‧ Carding

28A, 28B‧‧‧The locked part

30‧‧‧Insert side large diameter

31‧‧‧ inserted side small diameter section

32A, 32B, 32C‧‧‧insert body

34‧‧‧ inserted into the side of the large diameter

36A, 36B, 128‧‧‧ fixed components

38A, 38B, 38C‧‧‧Flexible cylindrical members

39‧‧‧through holes

40A, 40B, 40C‧‧‧Flexible cylindrical member body

42A, 42B, 42C‧‧‧Card fixing parts

44, 62‧‧‧ inner circumference

46, 60‧‧‧ outer perimeter

48, 142‧‧‧ with through hole cover member

50, 58, 138‧‧ ‧ male thread

52, 56, 150, 158‧‧ ‧ female thread

54, 152‧‧‧Locking members

55‧‧‧ center hole

64‧‧‧ annular protrusion

66, 130‧‧‧through the mouth

68, 132‧‧‧Cylinder base

70‧‧‧Aperture flange

72‧‧‧The fixed part of the card

74, 114‧‧‧Upper installation

75, 118‧‧‧ flow path holes

76‧‧‧Liquid spit

78, 162‧‧‧ inner wall

80, 164‧‧‧ support wall

82, 166‧‧‧ peripheral wall

84‧‧‧Great Path Section

86‧‧‧ annular protrusion

88‧‧‧ recess

101‧‧‧Traditional joint construction

106‧‧‧pressure tank

108‧‧‧Air supply pipe

112a‧‧‧Cylinder side wall

112b‧‧‧ Male thread department

116‧‧‧Open end

120‧‧‧Long cylindrical body

122‧‧‧Long flow section

124‧‧‧viscous liquid

134‧‧‧Aperture flange

136‧‧‧ Seat steps

140, 168‧‧‧ Tapered

144‧‧‧round plate

146‧‧‧through holes

148‧‧‧Ring side wall

154‧‧‧ center hole

156‧‧‧Cylinder components

158‧‧‧Locking female thread

159‧‧‧through flow path

160‧‧‧Liquid spit

170‧‧‧Outer Steps

D1, D4‧‧‧ OD

D2, D3, D5, D6‧‧‧ inner diameter

G‧‧‧ gap

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing an embodiment of a joint structure for a viscous liquid discharge device of the present invention.

Fig. 2 is a side elevational view of a portion of a flexible cylindrical member and an elongated flow path member of the joint structure shown in Fig. 1;

Fig. 3 is a schematic view showing a state in which a member is assembled in an exploded sectional view of Fig. 1, wherein (a) is a schematic cross-sectional view and (b) is a schematic plan view.

Fig. 4 is a schematic view showing another embodiment of a joint structure for a viscous liquid discharge device according to the present invention, wherein (a) is a schematic cross-sectional view and (b) is a schematic plan view.

Fig. 5 is a view showing still another embodiment of the joint structure for the viscous liquid discharge device of the present invention, wherein (a) is a side view of a main portion of the flexible cylindrical member and the elongated flow path member, (b) ) is a cross-sectional view of (a).

Fig. 6 is a schematic view showing a conventional viscous liquid discharge device.

Figure 7 is a schematic exploded cross-sectional view showing an embodiment of a conventional joint structure. Figure.

8 is a schematic view showing a conventional joint structure, in which (a) is a plan view showing a state in which a through-hole cover member and a lock member are combined, and (b) is a schematic cross-sectional view showing a state in which a joint portion of the joint structure is in a gap state.

[Formation of the Invention]

In the following, the embodiments of the present invention are described with reference to the drawings, but are merely illustrative, and various modifications may be made without departing from the spirit and scope of the invention. In addition, the same components are denoted by the same symbols.

In Fig. 1 and Fig. 3, reference numeral 10A shows an example of a joint structure for a viscous liquid discharge device according to the present embodiment. As shown in FIGS. 1 to 3, the joint structure 10A according to the present embodiment is a plastic which is attached to the inside of the plastic container body 12 and includes an elongated flow path member 16A having an internal through hole 14A in the longitudinal direction. The container 18 is provided in a pressurizing tank as shown in Fig. 6, and the viscous liquid in the plastic container 18 is discharged from the elongated flow path member 16A by pressurization, by the elongated flow path member 16A and the seal. The liquid supply tube means 22A to which the attachment means 20A is joined is discharged from the discharge nozzle means (not shown), and constitutes a joint structure for the viscous liquid discharge apparatus which can replace only the plastic container 18 after the discharge operation of the viscous liquid.

The plastic container body 12 is formed of a soft plastic material which can be crushed, such as polyethylene or polypropylene. However, it is particularly suitable for soft polyethylene in terms of flexibility, economy, and ease of molding. An opening 13 is formed in an upper portion of the plastic container body 12. Plastic container body The inside of the 12 can be filled with a viscous liquid. In the case where the inside of the plastic container body 12 is filled with a viscous liquid, if pressure is applied from the outside of the plastic container body 12, the plastic container body 12 is deformed and contracted by pressurization, and is finally crushed to make the internal viscous. The liquid is discharged from the opening 13 by the liquid supply means 22A. The liquid supply means 22A is preferably a tube or a pipe. The material of the liquid supply pipe means 22A is preferably Teflon (registered trademark).

Viscous liquids can be used with a viscosity of 5 to 500 Pa. s / 23 ° C, preferably 10 to 100 Pa. s / 23 ° C, more preferably 15 to 60 Pa. Viscous liquid at s/23 °C. The viscous liquid is suitable for a curable composition which is particularly adhesive. Examples of the curable composition having an adhesive property include an adhesive, a sealing material, a potting material, and the like. The Tact Free Time (TFT) of the viscous liquid is preferably in the range of 0 to 60 minutes, preferably 0 to 10 minutes, more preferably 0 to 3 minutes. In the present embodiment, when a viscous liquid having a viscosity and a non-sticking time in the above range is used, a much more difficult effect can be achieved than in a conventional product. The curable composition having an adhesive property is preferably a moisture-curing type, or an oxygen-curable type, a room-temperature hardening type curable composition which can be hardened by contact with air at a normal temperature, in particular, a modified fluorenone, a urethane, an anthrone. Moisture-curing adhesives such as a class are more suitable.

In the joint structure 10A according to the present embodiment, the seal mounting means 20A is provided with a flexible flexible cylindrical insertion portion 24A, and is configured to transmit the flexible cylindrical insertion portion 24A from the elongated shape. The upper end portion of the flow path member 16A is inserted into the inner through hole 14A, and the flexible cylindrical insertion portion 24A is locked to the elongated flow path member 16A.

More specifically, as shown in Figures 1 to 3, in a flexible circle The cylindrical insertion portion 24A is provided with the locking portion 26A, and the upper end portion of the elongated flow path member 16A is provided with the engaged portion 28A that is engaged with the locking portion 26A, and is inserted into the flexible cylindrical shape. The portion 24A is inserted into the inner through hole 14A from the upper end portion of the elongated flow path member 16A, and the flexible cylindrical insertion portion 24A can be locked to the elongated flow path member 16A. In the example of FIGS. 1 to 3, the locking portion 26A is constituted by the flexible cylindrical insertion portion 24A itself. In other words, the flexible cylindrical insertion portion 24A is press-fitted into the inner through hole 14A from the upper end portion of the elongated flow path member 16A, and is preferably configured to be a flexible cylindrical insertion deformed by an external force. The portion 24A returns to the inner through hole 14A of the elongated flow path member 16A by returning the original force. In other words, the flexible cylindrical insertion portion 24A also has elasticity.

In addition, as shown in FIG. 1 to FIG. 3, the locking portion 26A provided in the flexible cylindrical insertion portion 24A is formed on the insertion portion side large diameter portion 30 of the flexible cylindrical insertion portion 24A. The locked portion 28A provided at the upper end portion of the elongated flow path member 16A is formed in the inserted portion side small diameter portion of the inner through hole 14A of the elongated flow path member 16A so as to correspond to the insertion portion side large diameter portion 30. 31.

In the example of FIG. 1, the outer diameter D1 of the insertion portion main body 32A of the flexible cylindrical insertion portion 24A is configured to be smaller than the inner through hole 14A formed in the elongated flow path member 16A. The inner diameter D2 of the insertion portion side large diameter portion 34 is larger than the inner diameter D3 of the inserted portion side small diameter portion 31 formed in the inner through hole 14A of the elongated flow path member 16A. In this manner, when the flexible cylindrical insertion portion 24A is inserted into the internal through hole 14A from the upper end portion of the elongated flow path member 16A, the insertion portion side small diameter portion 31 is locked.

The flexible cylindrical insertion portion 24A is preferably made of a different material from the liquid supply tube means 22A and is formed separately. In order to have flexibility, the flexible cylindrical insertion portion 24A is preferably made of a soft plastic such as soft polyethylene or ethylene-propylene rubber (EPT).

In the example of the drawing, the thickness of the flexible cylindrical insertion portion 24A is made thinner than the thickness of the elongated flow path member 16A, and the flexible cylindrical insertion portion 24A is formed. Flexible.

As shown in FIGS. 1 and 3, the sealing and mounting means 20A includes a fixing member 36A for fixing the elongated flow path member 16A and the liquid supply tube means 22A in an engaged state, and the flexible cylindrical insertion portion 24A is provided. The flexible cylindrical member 38A includes a flexible cylindrical member body 40A having a through hole 39 therein; and a lower end portion of the flexible cylindrical member 38A that is fixed to the fixing member 36A; The annular locking member 42A is formed on the outer circumferential surface of the flexible cylindrical member body 40A in order to lock and fix the flexible cylindrical member body 40A to the fixing member 36A.

More specifically, the seal mounting means 20A has a fixing member 36A, and the fixing member 36A has a cylindrical base 68 having a through opening 66 at a central portion thereof, and an annular shape is formed on the outer surface of the lower portion of the cylindrical base 68. The flange portion 70 is formed with a male screw portion 58 on the outer surface of the upper portion of the cylindrical base 68 at the same time. An annular type locked fixing portion 72 for locking and fixing the locking fixing portion 42A of the flexible cylindrical member 38A is formed at a lower portion of the cylindrical base 68.

Further, as shown in FIGS. 1 to 3, the elongated flow path portion of the elongated flow path member 16A is provided with an internal through hole 14A at the center portion. The elongated flow path member 16A is a tubular body in which one or more flow path holes 75 are opened on the side surface. Again The upper end attachment portion 74 has an inner peripheral wall 78 on which the liquid discharge port 76 is formed, and an outer peripheral wall 82 that is provided at a position separated from the inner peripheral wall 78 by a predetermined interval by the support wall 80c. The inner peripheral wall 78 has an inner diameter in which the upper portion has a larger diameter than the lower portion, and the upper end surface of the inner peripheral wall has a tapered portion that is inclined inward. The upper end portion of the outer peripheral wall 82 is bent outward to form an outer peripheral step portion. By fitting the outer step portion to the outer peripheral edge portion of the opening portion 13 of the plastic container body 12, the elongated flow path member 16A can be detachably attached to the opening portion 13. These basic configurations have been described in detail, for example, in Patent Document 1.

Reference numeral 48 is a through-hole cover member, and a through hole is formed in a central portion of the circular plate, and a female screw portion 52 is formed on the inner surface side of the annular side wall that is suspended from the peripheral edge portion of the circular plate. The threaded portion 52 can be screwed to the male threaded portion 50 formed outside the cylindrical side wall of the opening portion 13 of the plastic container body 12. Such a through-hole cover member 48 has substantially the same configuration as those described in Patent Documents 1 to 3, and thus detailed description thereof will be omitted. However, in the illustrated example, the concave portion 88 is provided on the outer circumferential surface of the through-hole cover member 48, and is configured to be difficult to slide in a conventional manner.

Reference numeral 54 is a locking member having a cylindrical member through which a center hole 55 is bored at the center portion, and a lower portion of the inner peripheral surface of the cylindrical member is formed with a locking female screw portion 56 which can be formed on the outer peripheral surface of the fixing member 36A. The threaded portion 58 is screwed. As shown in Fig. 1, the upper portion of the center hole 55 of the locking member 54 is formed in a shape in which the diameter is gradually reduced toward the upper portion. Since the locking member 54 and the patent documents 1 to 3 have substantially the same configuration, the detailed description will be omitted.

The length of the flexible cylindrical insertion portion 24A has a flexibility The front end portion of the cylindrical insertion portion 24A reaches the length of the locked portion 28A provided in the internal through hole 14A of the elongated flow path member 16A.

In the example of Fig. 1 to Fig. 3, the inner diameter of the liquid supply pipe means 22A is larger than the outer diameter of the flexible cylindrical member main body 40A, and the lower end inner peripheral surface 44 of the liquid supply pipe means 22A is abutted to be flexible. An example of the configuration of the outer peripheral surface 46 of the cylindrical member body 40A.

The elongated flow path member 16A configured by joining the joint structure 10A according to the present embodiment configured as described above is the elongated flow path member according to the present embodiment.

The elongated flow path member 16A formed by joining the joint structure 10A is attached to the plastic container 18 of the plastic container body 12, and assembled in a conventional viscous liquid discharge device as shown in FIG. The viscous liquid discharge device involved. In other words, the viscous liquid discharge device according to the present embodiment has a pressurizing tank, a compressed air supply means for supplying compressed air into the pressurizing tank, a plastic container 18 provided in the pressurizing tank, and one end communicating with each other. The liquid supply pipe means 22A of the opening of the plastic container 18 and the discharge nozzle means connected to the other end of the liquid supply means 22A. In the pressure tank, the compressed air supply means, the liquid supply means, and the discharge nozzle means, the unit in the viscous liquid discharge type coating apparatus disclosed in Patent Documents 1 to 3 can be applied.

In the viscous liquid discharge device according to the present embodiment, a sealing communication means as disclosed in Patent Document 3 may be further provided.

Further, another embodiment of the joint structure according to the present embodiment is disclosed in Fig. 4 . In the joint structure 10B according to another embodiment of the present invention shown in Fig. 4, the elongated flow path member 16A and the liquid supply pipe means 22B is joined by the sealing device 20B.

As shown in Fig. 4, the sealing device 20B includes a fixing member 36B for fixing the elongated flow path member 16A and the liquid supply tube means 22B in an engaged state, and the flexible cylindrical insertion portion 24B is formed in the locking state. The lower end portion of the flexible cylindrical member 38B that is fixed to the fixing member 36B. The flexible cylindrical member 38B has a flexible cylindrical member body 40B having a through hole therein, and a ring-shaped locking fixing portion 42B formed on the body of the flexible cylindrical member The 40B is locked to the outer circumferential surface of the flexible cylindrical member body 40B of the fixing member 36B.

As shown in Fig. 4 (a) and Fig. 4 (b), the joint structure 10B is configured such that the outer diameter of the liquid supply pipe means 22B is smaller than the inner diameter of the flexible cylindrical member body 40B, and the liquid supply pipe means The outer peripheral surface 60 of the lower end portion of 22B abuts against the inner peripheral surface 62 of the flexible cylindrical member body 40B. Further, as shown in FIG. 4(a), an annular projection 64 for preventing the liquid feed tube means 22B from being excessively inserted is formed on the inner circumferential surface 62 of the flexible cylindrical member body 40B. The other configuration is basically the same as the above-described joint structure 10A, and therefore detailed description thereof will be omitted. In this manner, the elongated flow path member 16A and the liquid supply tube means 22B are joined.

Further, another embodiment of the flexible cylindrical insertion portion used in the joint structure according to the present embodiment is disclosed in Fig. 5 .

In FIG. 5, the flexible cylindrical insertion portion 24C is formed at a lower end portion of the flexible cylindrical member 38C that is locked and fixed to the fixing member 36A. The flexible cylindrical member 38C has a flexible cylindrical member body 40C and an annular locking fixing portion 42C formed in a flexible cylindrical shape. The component body 40C is locked and fixed at The outer peripheral surface of the flexible cylindrical member body 40C of the fixing member 36A. The insertion portion main body 32C of the flexible cylindrical insertion portion 24C is provided with a locking portion 26C that belongs to the annular projection. Further, the upper end portion of the elongated flow path member 16B is provided with a locked portion 28B to be engaged with the locking portion 26C. Further, an annular projection 86 for improving the sealing property of the opening portion 13 of the plastic container body 12 is provided in the vicinity of the upper end portion of the outer peripheral wall 82 of the elongated flow path member 16B.

As shown in Fig. 5 (a) and Fig. 5 (b), the partial outer diameter D4 of the locking portion 26C belonging to the annular projection is configured to be larger than the large diameter portion of the inner through hole 14B formed in the elongated flow path member 16B. Inner diameter D5 of 84.

In this manner, when the flexible cylindrical insertion portion 24C is inserted into the internal through hole 14B from the upper end portion of the elongated flow path member 16B, it is locked to the inner circumference of the internal through hole 14B of the elongated flow path member 16B. surface. Further, the diameter of the inner through hole 14B that is formed below the large diameter portion 84 of the inner through hole 14B of the elongated flow path member 16B is slightly reduced. Therefore, the inner diameter D6 of the inner through hole 14B is smaller than the inner diameter D5.

In other words, the locking portion 26C provided in the flexible cylindrical insertion portion 24C is the insertion portion side large diameter portion, and the locked portion 28B provided in the elongated flow path member 16B is the corresponding insertion portion side large diameter. The portion is formed in the inserted portion side small diameter portion of the inner through hole 14B of the elongated flow path member 16B. By inserting the flexible cylindrical insertion portion 24C into the internal through hole 14B from the upper end portion of the elongated flow path member 16B, the flexible cylindrical insertion portion 24C can be locked. The configuration of the elongated flow path member 16B. The other configuration is basically the same as the above-described joint structure 10A, and therefore detailed description thereof will be omitted.

10A‧‧‧ joint structure

12‧‧‧Plastic container body

13‧‧‧ openings

14A‧‧‧Internal through holes

16A‧‧‧Long flow path components

18‧‧‧Plastic containers

20A‧‧‧Sealing means

22A‧‧‧ Liquid delivery pipe means

24A‧‧‧Flexible cylindrical insert

26A‧‧‧Cards

28A‧‧‧The locked part

30‧‧‧Insert side large diameter

31‧‧‧ inserted side small diameter section

32A‧‧‧Intrusion body

34‧‧‧ inserted into the side of the large diameter

36A‧‧‧Fixed components

38A‧‧‧Flexible cylindrical member

39‧‧‧through holes

40A‧‧‧Flexible cylindrical member body

42A‧‧‧Locking Fixing Department

44‧‧‧ inner circumference

46‧‧‧ outer perimeter

48‧‧‧With through hole cover member

50‧‧‧ Male thread

52‧‧‧Female thread

54‧‧‧Locking members

55‧‧‧ center hole

56‧‧‧Female thread

58‧‧‧ Male thread department

66‧‧‧through the mouth

68‧‧‧Cylinder base

70‧‧‧Aperture flange

72‧‧‧The fixed part of the card

74‧‧‧Upper installation

75‧‧‧Flow hole

76‧‧‧Liquid spit

78‧‧‧ inner wall

80‧‧‧Support wall

82‧‧‧ peripheral wall

Claims (14)

An engaging structure for a viscous liquid discharge device is provided with a plastic container in a pressurizing tank, the plastic container comprising an elongated shape that is installed to extend inside the plastic container body and has an internal through hole in a longitudinal direction The flow path member is configured to eject the viscous liquid in the plastic container from the elongated flow path member by pressurization, and to eject the nozzle means by means of a liquid supply tube means joined by the elongated flow path member and the sealing and mounting means After the discharge operation of the viscous liquid, only the plastic container can be replaced, and the sealing device has a flexible cylindrical insertion portion that is flexible, and transmits the flexible circle. The cylindrical insertion portion is inserted into the inner through hole from the upper end portion of the elongated flow path member, and the flexible cylindrical insertion portion is locked to the elongated flow path member. The joint structure of claim 1, wherein the flexible cylindrical insertion portion is provided with a locking portion, and the elongated flow path member is provided with a locked portion that engages with the locking portion, and transmits the aforementioned The flexible cylindrical insertion portion is inserted into the internal through hole from the upper end portion of the elongated flow path member, and the flexible cylindrical insertion portion is locked to the elongated flow path member. The engagement structure of the flexible cylindrical insertion portion is a large-diameter portion formed on the insertion portion side of the flexible cylindrical insertion portion, and is provided in the length The locked portion of the flow path member is a small-diameter portion to be inserted into the inner through-hole of the elongated flow path member corresponding to the large-diameter portion of the insertion portion side. The joint structure of any one of the items 1 to 3, wherein the The thickness of the flexible cylindrical insertion portion is configured to be thinner than the thickness of the elongated flow path member, and the flexible cylindrical insertion portion is made flexible. The joint structure of any one of the items 1 to 4, wherein the seal mounting means includes a fixing member for fixing the elongated flow path member and the liquid supply tube means in an engaged state, the flexibility The cylindrical insertion portion is formed at a lower end portion of the flexible cylindrical member that is fixed to the fixing member, and the flexible cylindrical member has a flexible cylindrical member body and a locking fixing The portion is formed on the outer circumferential surface of the flexible cylindrical member body in order to lock and fix the flexible cylindrical member body to the fixing member. The joint structure of any one of the items 1 to 5, wherein the length of the flexible cylindrical insertion portion is such that the front end portion of the flexible cylindrical insertion portion reaches the elongated flow path member. The length of the aforementioned locked portion of the inner through hole. The joint structure according to any one of claims 1 to 6, wherein the flexible cylindrical insertion portion and the liquid supply tube means are made of different materials and are separately formed. The joint structure of any one of the items 1 to 7, wherein the inner diameter of the liquid supply pipe means is larger than an outer diameter of the flexible cylindrical member body, and the lower end portion of the liquid supply pipe means is inside The circumferential surface abuts against the outer circumferential surface of the flexible cylindrical member body. The joint structure of any one of the items 1 to 7, wherein the outer diameter of the liquid supply pipe means is smaller than the inner diameter of the flexible cylindrical member body The outer peripheral surface of the lower end portion of the liquid supply pipe means is brought into contact with the inner peripheral surface of the flexible cylindrical member body. An elongated flow path member is joined by a joint structure of any one of claims 1 to 9. The elongated flow path member according to claim 10, wherein the elongated flow path member is a tubular body having one or more flow path holes formed in a side surface thereof. A plastic container obtained by mounting an elongated flow path member of claim 10 or 11 in a plastic container body. The plastic container according to claim 12, wherein the viscous liquid system is a hardenable composition having a moisture-curing adhesive property or a curable composition having an oxygen-curable adhesive property. A viscous liquid discharge device having: a pressurized tank; a compressed air supply means for supplying compressed air to the pressurizing tank; and a plastic container according to claim 12 or 13 disposed in the pressurizing tank; The pipe means has one end connected to the opening of the plastic container; and a spouting means for connecting the other end of the liquid supply pipe means.