WO2007007555A1

WO2007007555A1 - Cartridge for discharge gun

Info

Publication number: WO2007007555A1
Application number: PCT/JP2006/312886
Authority: WO
Inventors: Yoji Tanaka
Original assignee: Polymer Systems Co., Ltd.
Priority date: 2005-07-14
Filing date: 2006-06-28
Publication date: 2007-01-18

Abstract

A fitting tube (51) formed at the forward end of a receiving tube (5) is fitted on and fixed to a connection tube (4A) of a lid (4) of a cartridge (1). A receiving tube (52) formed at the base end of the receiving tube (5) is projected from the connection tube (4A) toward the base end side of a barrel (2).

Description

Specification

Discharge gun cartridge

Technical field

[0001] The present invention relates to a cartridge for a discharge gun that is filled with an adhesive or a paint and is used by being attached to the discharge gun.

Background art

[0002] Generally, a cartridge for a discharge gun is composed of a cylindrical barrel portion made of a flexible sheet, a bottom portion for closing a proximal end opening portion of the barrel portion, and a lid portion for closing a distal end opening portion of the barrel portion. It is configured. The lid portion has a predetermined rigidity and is formed with a discharge port.

[0003] When discharging the adhesive or the like as the contents of the cartridge force of the above configuration, the cartridge is first mounted on the mounting portion of the discharge gun. Then push the bottom of the cartridge forward with the piston of the discharge gun. Then, the body portion is crushed into an accordion shape, and the adhesive or paint contained in the body portion is discharged from the discharge port of the cartridge.

[0004] Here, if the bottom of the cartridge is pushed forward without reinforcing the body of the cartridge, the body may buckle in the middle or the body may burst due to internal pressure. The Therefore, when the cartridge is mounted on the discharge gun, as described in Patent Document 1 below, a reinforcing cylinder is extrapolated outside the trunk portion, thereby preventing buckling or rupture of the trunk portion. ing.

[0005] Patent Document 1: Japanese Patent No. 3231525

Disclosure of the invention

Problems to be solved by the invention

[0006] However, when the reinforcing cylinder is used, there is the following problem. That is, the used cartridge is discarded after being taken out from the reinforcing cylinder. However, the barrel of the used cartridge is crushed in an accordion shape, and a part of the outer peripheral surface of the barrel is in press contact with the inner peripheral surface of the reinforcing cylinder. For this reason, when an attempt is made to remove the cartridge from the reinforcing cylinder, the body portion is stretched by the frictional resistance acting between the outer peripheral surface of the cartridge and the inner peripheral surface of the reinforcing cylinder. When discarding the cartridge with the barrel extended, remove the barrel again. The problem is that it must be squeezed into a dion shape, which requires a lot of effort.

Means for solving the problem

In order to solve the above problems, the present invention has a cylindrical barrel portion, a bottom portion that closes a proximal end opening portion of the barrel portion, and a discharge port, and a distal end opening of the barrel portion. A discharge gun cartridge in which the barrel portion is formed of a flexible sheet, and the lid portion is formed with a predetermined rigidity. The housing cylinder having a predetermined rigidity is extrapolated so as to surround a predetermined range of the body portion facing the base end side from the lid portion! /

In this case, it is desirable that the distal end portion of the housing cylinder is connected to the lid portion so as not to move in the longitudinal direction of the body portion.

Further, it is desirable that an inner diameter of a portion surrounding the trunk portion of the housing cylinder is set to be larger by a predetermined size than an outer diameter of the trunk portion facing the portion.

The invention's effect

[0008] When the cartridge force of the present invention having the above-described characteristic configuration is also discharged by using the discharge gun with the adhesive agent or the like as its contents, the cartridge and the reinforcing cylinder extrapolated to the body portion are used as the discharge gun. set. In this case, the front end face of the reinforcing cylinder is abutted against the base end face of the housing cylinder. Then, the bottom of the cartridge is pushed by the piston of the discharge gun, and the barrel is crushed in the longitudinal direction. When the cartridge is squeezed until it is used up, the entire crushed part of the body part escapes from the reinforcing cylinder and enters the receiving cylinder. Therefore, when a cartridge which has been used up is pulled out from the reinforcing cylinder, it is possible to reliably prevent a situation in which the body part where frictional resistance does not occur between them is extended.

Brief Description of Drawings

FIG. 1 is a cross-sectional view showing an embodiment of a discharge gun cartridge according to the present invention.

FIG. 2 is a sectional view showing the embodiment in a used state.

FIG. 3 is a sectional view showing two cartridges for a two-component adhesive according to the present invention with a two-component head and a guide tube attached thereto.

4 is a plan view showing the main part of the discharge gun with the two cartridges shown in FIG. 3 installed. The

FIG. 5 is a plan view showing the main part of the discharge gun in a state where the piston is advanced until the two cartridges are completely used.

FIG. 6 is a cross-sectional view showing a state where two cartridges removed from the discharge gun force are extracted from the guide tube.

FIG. 7 is a cross-sectional view showing a state where two cartridges are detached from the two-liquid head. Explanation of symbols

[0010] 1 cartridge

2 Torso

3 Bottom

4 Lid

5 Container

43 Discharge port

52 Housing cylinder

BEST MODE FOR CARRYING OUT THE INVENTION

The best mode for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a discharge gun cartridge 1 according to the present invention. The cartridge 1 has a body portion 2, a bottom portion 3, a lid portion 4, and a storage cylinder 5.

[0012] The body 2 includes a single layer of a resin film, a laminated film obtained by laminating a plurality of resin films, or a multilayer resin film and an aluminum foil disposed between two resin films. It consists of a laminated film sheet made by laminating and is formed into a cylindrical shape. The body part 2 is flexible enough to be crushed at least in the longitudinal direction. The body portion 2 is formed in a tapered shape with a small angle (for example, 1 °) so that the diameter increases from the base end side (right side in FIG. 1) toward the tip end side. This is because the body 2 is formed by winding the sheet around a cored bar (not shown) and then attaching envelopes to both ends thereof. When the diameter of the sheet (body 2) wound around the metal core is removed in the axial direction, a large amount of friction is generated between the inner surface of the body 2 and the outer surface of the metal core. Resistance is generated. For this reason, torso 2 It will be very difficult to remove from the mandrel. Therefore, the cored bar is formed in a tapered shape.

Correspondingly, the body 2 is tapered. If the body 2 is formed by another method, the inner and outer diameters may be constant over the entire length.

[0013] The bottom portion 3 is formed by molding a resin, and is a fitting formed integrally with a disc portion 31 having a predetermined rigidity and an end face of the disc portion 31 facing the body portion 2. And a cylindrical portion 32. The outer peripheral surface of the base end portion of the trunk portion 2 is fitted and fixed to the inner peripheral surface of the fitting cylinder portion 32. The fitting cylinder part 3 2 may be fitted and fixed to the inner peripheral surface of the base end part of the trunk part 2. As a result of the fitting tube portion 32 being fixed to the base end portion of the body portion 2, the base end opening of the body portion 2 is closed by the disc portion 31. The fitting tube portion 32 of the bottom portion 3 is a force that can be fixed to the body portion 2 with an adhesive, and is fused in this embodiment. The fitting cylinder part 32 can be fused to the body part 2 by placing the body part 2 in advance in a predetermined part of the molding die when the bottom part 3 is injection-molded. The bottom 3 may be flexible. For example, a sheet having the same shape as the bottom part 3 of this embodiment may be formed by a sheet and fixed to the body part 2. Further, the base end portion of the body portion 2 may be folded, and a predetermined portion of the folded portion may be bonded to form a bottom portion that closes the base end opening of the body portion 2 in a sealed state.

[0014] The lid part 4 is composed of a connecting cylinder part 4A and a closing part 4B which are separate from each other.

The lid 4 may be formed integrally as a whole. The connecting cylinder portion 4A is formed by molding a resin, and is formed as a cylindrical body having a short length. The outer peripheral surface of the front end portion of the body portion 2 is fitted and fixed to the inner peripheral surface of the connecting tube portion 4A. The connecting tube portion 4A and the body portion 2 can be fixed with an adhesive, but in this embodiment, when the connecting tube portion 4A is injection-molded, the body portion is formed at a predetermined part of the molding die. By setting 2 in advance, the connecting cylinder portion 4A and the month portion 2 are fused and fixed.

The closing portion 4B is formed by molding a resin, and has a disc portion 41 and a double tube portion 42 that are integrally formed with each other. The disc part 41 and the base end part of the double cylinder part 42 are fitted and fixed to the inner peripheral surface of the front end part of the body part 2, and the contact surfaces are sealed. The double cylindrical portion 42 is fitted and fixed to the inner peripheral surface and the outer peripheral surface of the distal end portion of the connecting cylindrical portion 4A. A discharge port 43 is formed at the center of the disc portion 41. The discharge port 43 is closed by a seal 44 fixed to the disc portion 41. [0016] The housing cylinder 5 is formed by molding a resin, and has a fitting tube portion 51 on the distal end side and a housing tube portion (a portion surrounding the body portion 2) 52 on the proximal end side. . The fitting cylinder part 51 and the accommodating cylinder part 52 are integrally formed. The outer diameters of the fitting cylinder part 51 and the accommodation cylinder part 52 are set to be the same. However, the inner diameter of the fitting cylinder part 51 is set larger than the inner diameter of the accommodation cylinder part 52. As a result, an annular step portion 53 is formed between the fitting tube portion 51 and the housing tube portion 52. The inner diameter of the accommodating cylinder portion 52 is set to be larger than the outer diameter of the distal end portion of the trunk portion 2 by a predetermined size. The inner diameter of the accommodating cylinder portion 52 may be substantially the same as the outer diameter of the distal end portion of the trunk portion 2.

[0017] The fitting tube portion 51 is fitted and fixed to the outer peripheral surface of the base end portion of the connecting tube portion 4A, and the step portion 53 is abutted against the base end surface of the connecting tube portion 4A. Therefore, the accommodating cylinder part 52 protrudes from the connecting cylinder part 4A toward the base end side of the trunk part 2 by an amount corresponding to its own length. As shown in FIG. 2, when the barrel 2 is crushed in an accordion shape in the axial direction until the cartridge 1 is used up, as shown in FIG. It is set to a length that can enter.

The discharge gun cartridge 1 having the above-described configuration can be manufactured, for example, as follows. First, the bottom part 3 and the connecting cylinder part 4A are fixed to the base end part and the tip part of the body part 2, respectively. Next, a container 2 such as an adhesive or paint is filled into the body 2 with the opening force at the tip. Thereafter, the closing part 4B is fitted and fixed to the connecting cylinder part 4A and the body part 2, and the receiving cylinder 5 is fitted and fixed to the connecting cylinder part 4A.

[0019] Next, a description will be given of the case in which the stored item is discharged from the discharge port 43 of the cartridge 1 using the discharge gun. The discharge gun used here is a discharge gun G for a two-component adhesive as shown in FIGS. Therefore, in addition to the cartridge 1 configured as described above, another cartridge! / Is used. This cartridge! Only the inner and outer diameters of / differ from the inner and outer diameters of the cartridge 1, and each component is the same as the cartridge 1. Therefore, for each component of the cartridge: ^, the reference numerals of the corresponding components of the cartridge 1 are marked with “”, and detailed description thereof is omitted. When a one-part adhesive or paint discharge gun is used, only one cartridge 1 is used.

[0020] First, as shown in FIG. 3, two cartridges are used at the end of cartridges 1, 1 'arranged in parallel. Head H is installed. The two-component head Ή has insertion cylinder portions HI and H2, and the insertion cylinder portions HI and H2 are respectively inserted into the discharge ports 43 and 43 ′ of the cartridges 1 and 1 ′. Also, the insertion tube portions HI and H2 break the seals 44 and 44 'that block the discharge ports 43 and 43'. As a result, the contents in the force cartridges 1, 1 ′ can flow into the insertion tube portions HI, H2. A nozzle N is attached to the discharge cylinder H3 of the two-liquid head H.

[0021] Next, the reinforcing cylinders CI and C2 are extrapolated to the cartridges 1 and 1 ', respectively. The inner diameters of the reinforcing cylinders CI and C2 are substantially the same as the outer diameters of the front ends of the barrels 2 and 2 'of the cartridges 1 and 1', respectively, and are smaller than the inner diameters of the receiving cylinder parts 52 and 52 '. The reinforcing cylinders CI and C2 are extrapolated to the body parts 2 and 2 'until their front end surfaces abut against the' base end faces of the receiving cylinders 5 and 5, respectively. Push pieces Kl and K2 are press-fitted inside the base ends of the reinforcing cylinders CI and C2 so as to be movable in the axial direction of the reinforcing cylinders CI and C2.

[0022] The cartridges 1, 1 'to which the head rod and the reinforcing cylinders CI and C2 are mounted are set in the mounting portion G1 of the discharge gun G as shown in FIG. In the set state, head Ή is abutted against the stagger part G2 of the discharge gun G. This prevents the cartridge 1, \ 'from moving in the direction of the force from the base end side to the tip end side. After setting cartridges 1 and 1 ', the pistons G3 and G4 of the discharge gun G are moved forward to enter the reinforcing cylinders CI and C2 and hit the push pieces K1 and K2. When the pistons G3 and G4 are further advanced, the push pieces Kl and K2 move forward and push the bottoms 3 and 3 'of the cartridges 1 and 1' forward, and the cartridges 1 and 1 '

Crush body parts 2 and 2 'in the axial direction. As a result, the adhesive force in the cartridges 1 and 1 ′ passes through the insertion cylinders HI and H2, and is discharged from the discharge cylinder H3 into the nozzle N. It is then mixed in nozzle N.

[0023] When the pistons G3, G4 are advanced to a predetermined position, as shown in FIG. 5, the cartridges 1, 1 in which the pistons G3, G4 are pressed and the barrels 2, 2 'are crushed as shown in FIG. 'And the head Ή will hit the stagger part G2, and it will not be possible to move forward any further. Therefore, the force cartridge 1, 1 'force cannot discharge the contents, and the use of the cartridge 1, 1' is completed. In this state, the entire crushed portion between the bottom portion 3 and the lid portion 4 of the trunk portions 2 and 2 ′ is pulled out forward from the reinforcing cylinders CI and C2, and inside the accommodating cylinder portions 52 and 52 ′. I'm stuck in. Also, the inner diameter of the accommodating cylinders 52, 52 'is larger than the outer diameter of the body part 2. Therefore, the crushed portion of the body portion 2 can easily enter the housing tube portions 52 and 52 ′.

[0024] When discarding the used cartridges 1, 1 ', the pistons G3 and G4 are first retracted to escape from the reinforcing cylinders CI and C2. Then, remove cartridge 1, 1 ', head Ή and reinforcing cylinders Cl, C2 from discharge gun G. After that, as shown in Fig. 6, the reinforcing cylinders CI and C2 are also pulled out of the cartridge 1, \ 'force. At this time, the crushed trunk portions 2 and 2 'have entered the accommodating cylinder portions 52 and 52', and are not in contact with the reinforcing cylinders CI and C2. Therefore, when the cartridges 1, \ 'are extracted from the reinforcing cylinders CI, C2, it is possible to reliably prevent the crushed barrels 2, 2' from extending. Then, as shown in Figure 7

Then, remove cartridges 1 and 1 'from head Ή and discard them.

Note that the present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope without departing from the gist thereof.

For example, in the above-described embodiment, the housing cylinder 5 is connected and fixed to the lid portion 4, but it may be movable in the axial direction of the trunk portion 2 with respect to the lid portion 4. In that case, the distal end surface of the housing cylinder 5 is brought into contact with the proximal end surface of the connecting cylinder portion 4A of the lid portion 4. Alternatively, the accommodating cylinder 5 may be extrapolated to the barrel 2 and the lid 4 so as to be movable in the axial direction thereof, and the front end surface of the accommodating cylinder 5 may be directly abutted against the stopper G2 of the discharge gun G. .

Industrial applicability

[0026] The discharge gun cartridge according to the present invention can be used by being mounted on a discharge gun for discharging paint, adhesive, or the like.

Claims

The scope of the claims

[1] A cylindrical barrel, a bottom that closes the proximal end opening of the barrel, and a lid that has a discharge port and closes the distal end opening of the moon, and the barrel is In the discharge gun cartridge, which is constituted by a flexible sheet and the lid portion is formed with a predetermined rigidity.

A discharge cylinder characterized in that a receiving cylinder having a predetermined rigidity is fitted on the outer periphery of the front end portion of the barrel portion so as to surround the lid portion of the barrel portion toward the base end side so as to surround a predetermined range. Gun cartridge.

[2] The discharge gun cartridge according to claim 1, wherein a tip end portion of the housing cylinder is connected to the lid portion so as not to move in a longitudinal direction of the body portion.

[3] The internal diameter of a part surrounding the body part of the accommodating cylinder is set to be larger by a predetermined size than the outer diameter of the body part facing the part. Discharge gun cartridge as described in 2.