JPH0317967Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a cartridge gun used when bonding plate-like objects and other metal parts to ceilings, walls, etc. This invention relates to an improved pouring cartridge gun.

[Conventional technology]

Conventional cartridge guns of this type have a head equipped with a nozzle at the front of the gun body, a cartridge filled with adhesive is attached to the head, and a pressure plate is attached at the tip of the gun to press the plunger of the cartridge. The push-out rod is intermittently advanced by operating a handle at the rear of the gun body, and a locking pawl is provided in association with the push-out rod for stopping the push-out rod from retreating at the advanced position.

[The problem that the idea aims to solve]

The pressing plate that presses the plunger of a conventional cartridge simply pushes the plunger, and a locking pawl or the like is separately provided on the pushing rod to stop the plunger in the forward position. Therefore, when the plunger is pushed by the pressing plate and stopped at the forward position, the pressing plate is locked by the locking pawl at the stopped position, so even if you stop pushing, internal pressure is still building up in the adhesive material inside the cartridge. The adhesive was slightly pushed out of the nozzle, causing dripping, and the mixer did not cut the adhesive, which was inconvenient when applying the adhesive in dots.

This idea provides a pressure contact piece on the outer periphery of a pressure plate that presses the plunger of the cartridge, and when the pressure plate stops pressing, the pressure plate moves forward but moves back slightly due to the internal pressure of the adhesive in the cartridge and stops, thereby applying the adhesive. To provide a pouring cartridge gun which solves the problem by being retracted from the tip of a mixer and preventing dripping.

[Means to solve the problem]

In order to solve the conventional problems, this invention provides a head 3 with a passage 2 for supplying adhesive A, etc. at the front part of the gun body 1, and a nozzle 4 at the outlet of the head 3.
A cartridge 5 filled with an adhesive material A, a sealing material, and a casting material that hardens after being poured into the passageway entrance of the head 3 is installed, and a pressing plate 7 that presses a plunger 6 fitted to the cartridge 5 is attached to the tip. In a cartridge gun in which a provided push-out rod 8 is moved forward and backward by an appropriate operating means at the rear of the gun body 1, the outer peripheral surface of the pressing plate 7 is pressed against the inner surface of the plunger 6 or the inner surface of the cartridge 5 so as to generate frictional resistance. It is an object of the present invention to provide a technical means in which a pressure contact piece 7a is formed to prevent the nozzle from sagging.

[Effect]

According to this invention described above, the adhesive A is applied to the head 3.
A pressure contact piece 7 of a pressure plate 7 is attached to a cartridge 5 filled with the following items, and is provided at the tip of a push-out rod 8 of the operation means.
a is in pressure contact with the inner surface of the plunger 6 or the inner surface of the cartridge 5, so when the press plate 7 is advanced by the extrusion rod 8 and stopped after dispensing the adhesive A, it will temporarily stop at the forward position, but the press plate Even if the pressure is stopped, the internal pressure of the adhesive of the cartridge is applied to the pressure plate, so the pressure plate is pressed against the pressure contact piece 7a.
Under the pressure contact force, it moves slightly backward from the forward position and stops, preventing it from sagging backwards.

〔Example〕

This invention will be explained below based on embodiments shown in the drawings.

The embodiments shown in FIGS. 1 and 2 show a dispensing cartridge gun for mixing two types of adhesives, etc. In the drawings, 1 is a gun body made of synthetic resin, and the front part is filled with adhesive. Passage 2 for supplying A, etc.
2 is provided, and a nozzle 4 is provided at its tip outlet, and an adhesive A, such as an adhesive such as epoxy resin, urethane resin, or acrylic resin, or a sealing material, is provided at the rear end entrance of the passage of the head 3. An operation in which two cartridges 5, 5 filled with a reactive material A to be mixed such as a casting material are installed, and an extrusion rod 8 at the rear is equipped with a pressing plate 7 at the tip to push the plunger 6 of the cartridge 5, 5. The means 9 is used for forward and backward movement.

In this cartridge, as shown in FIGS. 3 and 4, a pressure contact piece whose tip is bulged outward on the outer periphery of a pressure plate 7 inserted into the plunger 6 and can be pressed against the inner surface of the plunger 6 so as to generate frictional resistance. 7a
, the peripheral surface of the plunger 6 is brought into pressure contact with the inner surface of the cartridge so that it can move tightly, and when the press plate 7 is stopped at the forward position, the press plate moves back slightly due to the internal pressure of the adhesive inside the cartridge and stops. Do it like this. The pressing plate 7 of the embodiment has a large number of notches formed on its outer periphery and a large number of pressing pieces 7a around the periphery, and the pressing plate 7 is attached to the tip of an extrusion rod 8 with screws. The pressing plate 7 can be pulled out against the pressing force of the spring strip by pulling out the pushing rod 8 from the plunger 6 of the cartridge. In the above embodiment, the pressing piece 7a of the pressing plate 7 is pressed into the plunger 6, but the invention is not limited to this, and as shown in FIG. The tip of the pressure welding piece 7a is connected to the plunger 6.
It may be made more exposed and brought into direct pressure contact with the inner surface of the cartridge 5 so that it can move more tightly.

Further, in the embodiment, the head 3 is shaped like a triangle, with passages 2, 2 for supplying different types of reactive materials A on both sides.
A nozzle 4 with a spiral blade 10 inserted therein is attached to the tip outlet, and cartridges 5, 5 are freely attached to the entrances of the passages 2, 2 of the head 3 with screws, etc. be. As an operating means for simultaneously pressing the cartridges 5, 5, a pushing rod 8 having a pressing plate 7 at its tip is connected at its rear end to a movable rod 12 provided in a frame 11 provided at the rear of the gun body 1 so as to be capable of retracting. They are connected by a plate 13 so that both extrusion rods 8 are simultaneously moved back by the same amount by advancing and retracting the movable rod 12. Also, moving rod 12
In this embodiment, a movable rod 12 is freely slidably inserted into the center of a frame 11 having a grip portion 19 provided at the rear of the gun body 1 as an advance/retreat operating device. Insert an actuating plate 14 that operates forward,
A return spring 15 is installed between the front surface of the actuating plate 14 and the frame body 11.
is interposed therebetween, and a frame 1 is provided at the bottom of the actuating plate 14.
A pressing part 18 at the upper part of a handle 17 supported by a shaft 16 is connected to the rear lower part of the handle 17, and normally the return spring 1
With a pressing force of 5, the actuating plate 14 is made to stand up with respect to the axis, and by pulling the handle 17 against the grip part 19, the lower part of the actuating plate 14 is pushed and moved by the pressing part 18, and tilted with respect to the axis. The movable rod 12 is held and moved forward together, held by the pressing force of the pressing plate 7 of the push-out rod 8 that moves together with the movable rod 12 in the forward position, and the return spring 15 is released by releasing the handle 17.
Only the actuating plate 14 is returned to its original position, and the moving rod 12 is intermittently advanced by a constant stroke by operating the handle. In addition, 20 is an adjustment screw that adjusts the rotation range of the pressing part 18 on the upper part of the handle;
21 is an adjustment screw associated with the upper part of the actuating plate 14.

Since this invention has the above configuration, when bonding plate-like objects and other metal parts to ceilings, walls, etc.,
The push-out rods 8 of the operating device are pulled down to the rear position, the cartridges 5 filled with the reactive material are installed in the passages 2, 2 of the head 3, and the press plates 7 at the tips of the pair of push-out rods 8 are moved to the plungers of the cartridges 5, 5. 6 to press the pressure contact piece 7a against the plunger, and each time the handle of the gun body 1 is repeatedly operated to advance the moving rod 12 and the pushing rod 8 by a certain stroke, the pressing plate 7 is held in the forward position, and the cartridge reacts. The material is poured out from a nozzle at the tip through a passage in the head. Even if the pressing plate 7 is stopped at the forward position, it will be pushed back a little by the internal pressure applied to the reactive material in the cartridge when pressed and will stop.

[Effect of idea]

According to this invention, the pressing piece of the pressing plate that presses the plunger of the cartridge can be stopped at the forward position when the moving rod or pushing rod is moved forward by the handle, so there is no need to separately provide a locking claw as in the conventional structure. In addition, when the pressure plate pushes out the adhesive material in the cartridge by pushing the plunger, pressure is applied to the adhesive material, etc., so when the pressure plate stops moving forward, the internal pressure acts in the direction of pushing the plunger back slightly. Since the plunger can be returned slightly regardless of the pressing of the pressure-welding piece, the adhesive, etc. is sucked into the cartridge immediately after the pressing stops, and there is no dripping after retraction from the nozzle outlet. There is no dripping of adhesive etc. when applying it, and the adhesive etc. cuts easily, so
It has practical benefits such as being able to apply it neatly in dots.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the pouring cartridge gun of this invention, Fig. 2 is a partially cutaway plan view of the same, Fig. 3 A is a side view of the pressing plate, Fig. 3 B is a front view of the same, Fig. 4
The figure is a partially cutaway front view of the press plate inserted into the plunger and pressed against it, and FIG. 5 is a partially cutaway front view of the press plate inserted into the cartridge and pressed against it. 1... Gun body, 2... Passage, 3... Head,
4... Nozzle, 5... Cartridge, 6... Plunger, 7... Pressing plate, 8... Pushing rod, 7a
...Pressure piece, A...adhesive material.

Claims (1)

[Scope of utility model registration request] A head 3 with a passage 2 for supplying adhesive A, etc. is provided at the front of the gun body 1, and a nozzle 4 is provided at the outlet of the tip thereof, and a cartridge 5 filled with adhesive A, etc. is provided at the entrance of the passage of the head 3. A pressing plate 7 that is attached and presses the plunger 6 fitted to the cartridge 5
In a cartridge gun in which a push-out rod 8 provided at the tip is moved forward and backward by an appropriate operating means, a pressure contact piece 7a is pressed against the outer circumferential surface of the pressure plate 7 to the inner surface of the plunger 6 or the inner surface of the cartridge 5 so as to generate frictional resistance. A cartridge gun for dispensing, which is characterized by having the following features: