JPH0677855U - Discharge gun cartridge mounting jig - Google Patents

Abstract

(57) [Summary] [Structure] The piston 200 is slidably pressed into the jig body 100 having a cylindrical shape. Annular protrusions 201, 201 are formed on the peripheral portions of both end surfaces of the piston 200. The height of the protruding portion 201 is gradually increased as it goes outward in the radial direction of the piston 200. [Effects] When the cartridge 2 made of a thin film is attached to the discharge gun having the semi-cylindrical support portion 12 for use, the entire circumference of the cartridge 2 is protected by the jig body 100, so that the cartridge 2 is prevented from tearing. You can Moreover, since the cartridge 2 is gradually folded in an accordion shape from the end on the piston 200 side, the volume can be reduced when the used cartridge 2 is discarded.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting jig for mounting a cartridge containing an adhesive or the like on a discharge gun.

[0002]

[Prior art]

 Conventionally, as a discharge gun used when applying an adhesive or the like, the one as shown in FIG. 7 has been most popular. The discharge gun 1 includes a grip 11, a semi-cylindrical support portion 12 extending forward from an upper end portion of the grip 11, and a lever 13 rotatably provided in an intermediate portion of the grip 11. When the lever 13 is pulled in the direction of the arrow, the rod 14 moves forward, and the pressing plate 15 provided at the tip of the rod 14 moves forward. Reference numeral 16 is a short cylindrical end plate provided on the tip of the support portion 12, and has a horseshoe shape with an open upper portion when viewed from the tip side.

A cartridge 2 shown in FIG. 5 is conventionally mounted on the discharge gun 1 as described above. This cartridge 2 has a cylindrical main body 21 having a mouth 21a at its tip, a piston 22 slidably provided inside the main body 21, and a lid 23 screwed into the mouth 21a. The main body 21 is filled with an adhesive, for example.

When such a cartridge 2 is attached to the discharge gun 1 and used, as shown in FIG. 6, the nozzle N is screwed and fixed to the mouth portion 21 a instead of the lid 23, and the discharge gun 1 is used. It is placed on the supporting part 12 of. Then, when the piston 22 is pushed forward by the pressing plate 15, the adhesive filled inside the main body 21 is discharged from the nozzle N.

By the way, although the cartridge 2 is discarded after use, there is a problem that the main body 21 has a large wall thickness, which wastes resources. Further, since the main body 21 has a relatively high rigidity, there is a problem that the main body 21 becomes bulky when discarded.

Therefore, recently, the cartridge 3 shown in FIG. 4 has come to be used. This cartridge 3 is formed by forming a resin film into a cylindrical shape to form a main body 31, filling the inside of the main body 31 with an adhesive, and then sealing both ends with stoppers 32. Then, one end of the main body 31 is cut off and opened, and a nozzle is attached to the opened end (see FIG. 2). Then, it is attached to the discharge gun 1 for use.

[0007]

[Problems to be solved by the device]

 When the cartridge 3 is used by being mounted on the discharge gun 1, the upper half of the supporting portion 22 of the discharge gun 1 is open, and the upper half does not restrain the cartridge 3. Moreover, since the main body 31 of the cartridge 3 is formed of a thin film, the rigidity is low. Therefore, when the pressing plate 15 pushes the cartridge 3, a part of the upper side of the main body 31 may be torn.

In order to avoid such a problem, when the cartridge 3 is used, a dedicated discharge gun must be used, and the discharge gun 1 which is most popular at present cannot be used. Therefore, although it is desirable to use the cartridge 3 from the viewpoint of resource saving, there has been a problem that the cartridge 3 does not spread.

The present invention has been made to solve the above problem, and even if a cartridge having a main body made of a thin film is used for a popular type discharge gun as shown in FIG. 7, the cartridge will tear. It is an object of the present invention to provide a jig for mounting a cartridge for a discharge gun, which can prevent the above-mentioned problems and promote the spread of the cartridge.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is characterized by including a jig body having a tubular shape and a piston slidably provided inside the jig body. In this case, it is desirable to form annular protrusions on the peripheral portions of both end surfaces of the piston, and the height of the protrusions should be gradually increased toward the radially outer side of the piston. desirable.

[0011]

[Action]

 Position the piston at one end of the jig body and insert the cartridge from the opening at the other end. In this case, the cartridge should be opened and the nozzle should be attached to the end on the opening side. Then, the jig is attached to the supporting portion of the discharge gun, and the piston is pressed by the pressing plate of the discharge gun to advance to the other end side. Then, the adhesive or the like filled in the cartridge is ejected from the nozzle.

Here, since the entire outer periphery of the cartridge is constrained by the jig main body, it does not tear during use and is gradually crushed from the end portion on the piston side. In this case, if a protrusion is formed on the peripheral edge of the end face of the piston, the cartridge is crushed neatly in an accordion shape, and the adhesive can be ejected efficiently without leaving the adhesive inside. . Especially, when the height of the protruding portion is gradually increased toward the outside, this tendency is remarkable, and it is possible to prevent a part of the cartridge made of a thin film from being caught between the jig body and the piston. Can be stopped.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows a mounting jig A according to the present invention. The mounting jig A comprises a cylindrical jig body 100 and a piston 200 slidably inserted therein. There is.

The jig main body 100 is made of metal, hard resin, or the like in order to increase its rigidity, but is preferably made of resin from the viewpoint of weight reduction. In this case, for example, a resin such as polyethylene can be used. Further, although the jig 100 has a circular cross-section in this embodiment, if the cross-sectional shape of the discharge gun support or cartridge to be used is non-circular, the jig body 100 should be shaped accordingly. . The same applies to the entire length of the jig body 100.

On the other hand, the piston 200 is made of metal, hard resin, or the like, but is made of the same resin as that of the jig body 100 here for the sake of weight reduction. The piston 200 is formed in a plate shape having a circular cross section corresponding to the cross sectional shape of the jig body 100. Of course, when the jig body 100 is non-circular, the jig body 100 has a corresponding shape.

The outer diameter of the piston 200 is slightly larger than the inner diameter of the jig body 100 and is press-fitted into the inner circumference of the jig body 100. However, a relief portion 201 is formed on the outer peripheral surface of the piston 200 by gradually reducing the outer diameter from both ends toward the center. Therefore, only both ends of the piston 200 come into contact with the inner peripheral surface of the jig body 100. Moreover, the non-contact state in the central portion prevents the frictional resistance acting between the piston 200 and the jig body 100 from becoming excessive. It should be noted that the piston 200 is adapted to stop at a fixed position unless a further pressing force is applied due to the frictional resistance acting between the piston 200 and the jig body 100.

Further, annular protrusions 202 are formed on the peripheral edge portions of both end surfaces of the piston 200. The height of the protrusion 202 is gradually increased toward the outer side of the piston 200 in the radial direction. In this embodiment, the height of the protruding portion 202 is increased at a constant rate, but the rate of increase in height may be gradually increased or, conversely, may be gradually decreased.

When the cartridge 3 shown in FIG. 4 is mounted on the support portion 12 of the discharge gun 1 shown in FIG. 7 by using the mounting jig A having the above-mentioned configuration, as shown in FIG. The part is cut off and opened. Then, the cartridge 3 is inserted into the jig body 100 with the opened end portion being inserted into the inner periphery of the nozzle N, and the end portion of the nozzle N is fitted into the inner periphery of the jig body 100. When the pressing plate 15 is moved forward and the piston 200 is moved forward after mounting in this way, the adhesive filled in the cartridge 3 is discharged from the nozzle N.

After all the contact agent in the cartridge 3 has been discharged, the piston 15 is retracted and withdrawn from the jig body 100, and the jig A and the cartridge 3 are removed from the discharge gun 1. Then, while the used cartridge 3 is discarded, a new cartridge 3 is inserted into the jig body 100. In this case, the piston 200 is located on the opposite side to the initial position, but the new cartridge 3 may be inserted into the jig body 100 from the opposite side. Therefore, it is not necessary to return the piston 200 to the original position.

Here, since the entire circumference of the cartridge 3 is constrained by the jig body 100 during use, it is possible to prevent a part of the cartridge 3 from tearing. Further, the cartridge 3 is gradually crushed from the end portion on the piston 200 side, but since the projecting portion 202 is formed on the peripheral portion of the end surface of the piston 200, it is folded in an accordion shape. In particular, in this embodiment, since the height of the protruding portion 202 is gradually increased toward the outside, it can be folded more neatly. Therefore, the cartridge 3 after use can be made into a very small lump. Moreover, most of the adhesive in the cartridge 2 can be used up, resulting in good use efficiency.

Further, if the height of the protrusion 202 is gradually increased toward the outside, the angle formed between the protrusion 202 and the inner peripheral surface of the jig body 100 becomes an obtuse angle. The film forming the part moves so as to flow toward the center side of the piston 200 along the protruding part 202. Therefore, a part of the film forming the cartridge 2 does not bite between the piston 200 and the jig body 100. In particular, in this embodiment, since the escape portion 201 is formed on the outer peripheral surface of the piston 200 so that both ends of the piston 200 are always in contact with the jig body 100, the bite of the film is further prevented. It can be surely prevented.

Further, as is apparent from FIG. 2, when the discharge gun 1 is in use, the piston 15 enters the inside of the jig body 100. Therefore, even if the discharge gun 1 is turned upside down, the jig A 1 discharges. It does not fall off from the gun 1, and thus the cartridge 3 inserted in the jig body 100 can be reliably prevented from falling off.

The present invention is not limited to the above-described embodiment, but can be modified as appropriate without departing from the spirit of the invention. For example, the above-described embodiment is used for mounting the cartridge 3 on the discharge gun 1, but it can be used for mounting another cartridge, for example, the cartridge 4 shown in FIG. In this cartridge 4, one end of a tubular main body 41 made of a thin film is sealed by a stopper 42, while a short tubular shape holding portion 43 made of hard resin is fitted and fixed to the other end. A lid 44 integrally formed with a nozzle portion 44a is screwed and fixed to the mouth portion 43a of the shape holding portion 43, and is inserted into the jig body 100 from the sealing side. Then, it is mounted on the discharge gun 1 in the same manner as in the above embodiment.

[0024]

[Effect of device]

 As described above, since the present invention is provided with the tubular jig body and the piston slidably provided inside the jig body, the body has a thin film or the like. Even if the cartridge consisting of the cartridge is used in a popular type discharge gun, it is possible to prevent the cartridge from tearing, thereby promoting the popularization of the cartridge and eventually achieving the effect of resource saving. .

Further, by forming the protrusions on both end surfaces of the piston, the cartridge can be crushed like folding, thereby making it possible to reduce the bulk of the cartridge to be discarded and to bond the cartridge filled with the adhesive. It can be used efficiently with almost no filling such as agents. In particular, when the height of the protruding portion is gradually increased toward the outside in the radial direction, such an effect can be more reliably exhibited, and at the same time, a part of the film constituting the cartridge and the piston are cured. It is possible to prevent it from biting into the ingredient body.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing the same embodiment as used in a discharge gun.

FIG. 3 is a partially cutaway side view showing an example of a cartridge to which the mounting jig of the present invention is used.

FIG. 4 is a side view showing another example of a cartridge to which the mounting jig of the present invention is used.

FIG. 5 is a vertical sectional view showing an example of a cartridge having a highly rigid main body.

FIG. 6 is a vertical cross-sectional view showing the same cartridge mounted on a discharge gun.

FIG. 7 is a side view showing an example of a discharge gun in which the mounting jig of the present invention is used.

[Explanation of symbols]

 A cartridge mounting jig for discharge gun 100 jig body 200 piston 202 protrusion

Claims (3)

[Scope of utility model registration request] 1. A cartridge mounting jig for a discharge gun, comprising a tubular jig body and a piston slidably provided inside the jig body. 2. A ring-shaped projecting portion is formed at a peripheral edge portion of both end surfaces of the piston.
The cartridge mounting jig for the discharge gun described in. 3. The cartridge mounting jig for a discharge gun according to claim 2, wherein the height of the protruding portion is gradually increased toward the radially outer side of the piston.