JPH11333346A - Liquid delivery gun - Google Patents

Abstract

PROBLEM TO BE SOLVED: To advance a plunger by a strip material and disposing a housing frame part for housing a strip material behind a cartridge loading part. SOLUTION: This liquid delivery gun is provided with an actuation frame part 4 of a feed barrel 7 disposed at an operation lever 8 and the housing frame part 5 for the strip material 6 for feeding provided with the plunger 61 at its front end behind the cartridge loading part 3 disposed at the gun body 2. The feeding barrel 7 is actuated forward and backward within the actuation frame part 4 by the operation of the operation lever 8, by which the strip material 6 for feeding is delivered from the housing frame part 4. Liquid is delivered from the cartridge (a) A loaded into the cartridge loading part 3 by advancing the plunger 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid discharging gun used for discharging a liquid contained in a cartridge such as a caulking material, a paint, an adhesive, or grease used in the operation of a building or a building. It is.

[0002]

2. Description of the Related Art As is well known, a liquid discharging gun has a round rod-shaped rod having a plunger at its tip. The rod is advanced and the plunger is advanced to be housed in a cartridge. The empty cartridge can be removed from the cartridge loading section and a new cartridge can be loaded in a state where the liquid has been poured out and the rod is retracted. However, in the above-described conventional liquid discharging gun, since the rod extends greatly rearward, it becomes extremely obstructive at the time of work, and it is difficult to discharge the liquid in an impossible posture particularly in work in a small factory. Work efficiency is reduced. In order to solve such a drawback, a steel leaf spring having an arc-shaped cross section and a return ring provided at the tip instead of a round rod is used, as described in Japanese Utility Model Registration No. 3037366. There is known a configuration in which the leaf spring is folded back and stored below the cartridge loading portion when the plunger is retracted, and is not extended rearward.

[0003]

However, even the above-described liquid discharging gun has the following disadvantages. First
In addition, since the leaf spring is bent and folded in a U-shape behind the cartridge loading portion, the leaf spring has a minimum and maximum radius of curvature within a range where the leaf spring can be U-shaped, and a cartridge having a diameter equal to or less than the minimum radius of curvature is loaded. The part cannot be formed.
Therefore, since the diameter of the cartridge loading section is limited, it is not possible to provide a cartridge loading section having a small dimension smaller than the diameter. Second, since the leaf spring extends below the cartridge loading section, the total length of the cartridge loading section is reduced.
It must be longer than the folded leaf spring, and a leaf spring guide must be provided outside the lower surface of the cartridge loading section. Therefore, it is not possible to adopt a configuration in which the cartridge loading section is made short to facilitate loading of the cartridge, and there is no structural freedom. Third, during the liquid dispensing operation, since the cartridge is loaded, it is heavy. Therefore, it is necessary to hold the handle and lever with one hand and support the lower surface of the cartridge loading portion with the other hand to support the weight. Must. However, each time the lever is operated, the leaf spring and the return ring move on the lower surface of the cartridge loading unit, so that the cartridge loading unit cannot be stably supported. For this reason, the hand applied to the lower surface of the cartridge loading unit may be in the way, and the support of the gun may be weakened, and the direction in which the liquid is dispensed may be disturbed. Fourth, since a horizontally elongated hole for passing a leaf spring must be formed in the handle or lever, the labor and time required for the manufacturing operation are correspondingly increased, which not only increases the cost but also lowers the strength. Therefore, there is a demand for a liquid dispensing gun that can be used for any type of gun and that can be manufactured at low cost without disturbing the liquid dispensing operation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has been proposed based on conventional needs. The present invention is directed to a feed frame provided on a lever provided behind a cartridge loading section provided on a gun body. And a storage frame for a feed strip with a plunger at the tip. The lever is operated to move the feed frame forward and backward in the operation frame to store the feed strip. , And the plunger is advanced to discharge the liquid from the cartridge loaded in the cartridge loading section.

Further, according to the present invention, the storage frame portion of the feeding strip is formed in a vertically hollow circular frame shape, and the metal feeding strip is wound and stored along the inner surface of the circular frame. The structure and the storage frame portion of the feeding strip are also in the shape of a vertical circular frame, and include a structure in which a winding drum rotatable by an external operation is stored inside the hollow frame portion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a longitudinal sectional front view showing a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a state where a plunger is advanced, FIG. 3 is a side view of a feeder, FIG. FIG. 5 is an exploded perspective view of a feed frame, and FIG.
(A), (B), (C) are side views showing the process of the forward movement of the feed piece, and FIGS. 7A, 7B, and (C) are side views showing the process of the backward movement of the feed piece, FIG. 8 is a vertical sectional side view of a second embodiment of the present invention, FIG. 9 is a vertical sectional view of a third embodiment of the present invention, and FIG. 10 is a vertical cross section of a storage frame portion of a feeding strip in the embodiment of FIG. FIG.

A gun 1 for liquid ejection according to the present invention comprises a gun body 2 molded of metal or synthetic resin. The gun body 2 is provided behind a cartridge loading section 3 with an operation frame section 4 of a feed frame and a feed frame. A grip 4 extending downward is provided on the operating frame 4 while integrally providing a storage frame 5 for the band plate material.
1 is formed.

The cartridge loading section 3 has a cylindrical shape with an open front end, and a lid member 31 is detachably provided at the open front end by a screw mechanism so that a liquid cartridge a is loaded inside the cartridge loading section 3. By closing the open front end of the cartridge loading section 3 with the lid member 31,
The cartridge a can be stably supported.

The cartridge a has a nozzle b for discharging liquid at its tip, and has a cartridge a at its bottom.
There is a bottom plate c which can move toward the inside of the cartridge a. When the bottom plate c advances inside the cartridge a, the liquid in the cartridge a is discharged from the nozzle b. When the cartridge a is loaded in the cartridge loading section 3, the nozzle b projects outward from a small hole 32 formed in the center of the lid member 31, and when the bottom plate c is pressed, the liquid in the cartridge a It is poured out from the tip of b.

A through hole 43 is formed in a partition wall 42 that separates the cartridge loading section 3 from the operation frame section 4. The feeding strip plate member 6 inserted into the through hole 43 holds the cartridge loading section 3. A plunger 61 in the form of a plate is provided at the front end and the rear end of the plunger 61 penetrates through the through-hole 43, and the communication port 51 between the operation frame 4 and the storage frame 5 connects to the storage frame 5. Is housed inside.

The feed strip 6 is a thin strip made of, for example, steel, which is highly flexible and resilient. The cross section in the short direction has a gentle arc shape. And can be wound into a ring. The feeding strip 6 is straight inside the cartridge loading section 3 and the operating frame 4, but is wound in a ring shape along the inner peripheral surface inside the storage frame 5.

Inside the operation frame 4, there is provided a feed piece 7 facing the middle of the feed strip 6, and the feed piece 7 is attached to the upper end of an operation lever 8. The upper part of the operation lever 8 is rotatably supported by a support shaft 81, and is rotatable. The lower grip portion 83 of the operation lever 8 is urged by a spring member 82 in a direction away from the grip 41, so that the feed piece 7 is moved. Are retracted inside the operation frame portion 4.

As shown in FIGS. 3 to 5, the above-mentioned feed piece 7 is formed by overlapping an upper U-shaped lower piece 71 and an upper U-shaped lower piece 72 in a fitting manner. One end is pivotally connected with a pin 73, and a first guide groove 74 which is formed at the other end of the lower frame 71 and a second guide which is formed at the other end of the upper frame 72 and which is tilted in the other direction. A guide pin 76 is inserted in series with the groove 75 to position the feed piece 7 inside the forked portion 84 provided at the upper end of the operation lever 8, and to be inclined formed on the left and right sides of the forked portion 84. Third
Each end of the guide pin 76 is inserted into the guide groove 85 so as to be movably held.

The lower frame 71 is connected to one end of a coil spring 77 for pulling the feed frame 7 rearward inside the operation frame 4, and the other end of the coil spring 77 is fixed to the storage frame 5. I have.

The liquid dispensing gun 1 of the present invention has the above-mentioned structure. In a normal state, the cartridge a is loaded in the cartridge loading section 3 and is closed and held by the lid member 31, and the nozzle b projects outside. ing. Then, the grip portion 83 of the operation lever 8 extends forward away from the grip 41,
The feed piece 7 is positioned behind the operating frame 4 by the coil spring 77 and faces the feed strip 6, and the plunger 61 at the tip of the feed strip 6 contacts the outer surface of the bottom plate c to feed the feed strip 6. Are wound around the inner peripheral surface of the storage frame 5 and stored (FIG. 1). In this state, the lower frame 7
1 and the upper frame portion 72 are slightly separated from each other in the vertical direction, so that the feeding strip 6 is not clamped.

In this state, in order to pour out the liquid inside the cartridge a from the nozzle b, the grip 41 and the grip portion 83 are simultaneously gripped and the grip portion 8 is held.
When the operation lever 8 is turned so that the handle 3 approaches the grip 41 (FIG. 2), the forked portion 84 moves forward and the guide pin 76 moves forward at the moment of the rotation, so that the guide pin 76 is inclined. While moving forward in the range between the first guide groove 74 and the second guide groove 75, the operation of the third guide groove 85 causes the lower frame 71 and the upper frame 72 to tilt up and down with the pin 73 as a fulcrum. Then, as shown in FIG. 6A, the feeding strip 6 is sandwiched.

The operation of the operating lever 8 by operating the grip 83
When the forked portion 84 is further rotated in the forward direction, the lower frame 71 and the upper frame 72 are rotated as shown in FIG.
When the feed piece 7 moves forward together with the guide pin 76 while holding the feed strip 6 and reaches the most advanced state, the grip portion 83 hits the grip 41 and cannot be further advanced. Accordingly, the feed strip 6 is fed out of the storage frame 5 and advanced by the advance length of the feed piece 7, and the plunger 61 advances by the advance length to push out the bottom plate c from the rear. Is discharged from the nozzle b.

When the gripper 83 is released in the forward state of the feed piece 7, the operation lever 8 is returned and rotated by the bias of the support shaft 81.
In this case, immediately after the return rotation, the guide pin 76 returns within the range of the first guide groove 74 and the second guide groove 75 as shown in FIG. The portion 72 rotates so as to be separated from the pin 73 as a fulcrum, and the holding of the feeding strip 6 is released. Then, even if the operation lever 8 is returned and rotated by the urging force of the spring member 82 and the coil spring 77, as shown in FIG. 7C, since the feed piece 7 does not hold the feed strip material 6, Even if the feed piece 7 and the operation lever 8 return, the feed strip material 6 does not return, and the feed strip 7 is not clamped when the feed piece 7 is most retracted.

Therefore, every time the operating lever 8 is operated, the feed strip plate member 6 is extended from the storage frame portion 5 by the length of the forward movement of the feed piece 7 and is advanced, and the bottom plate c is advanced by the plunger 61. The liquid in the cartridge a is discharged from the nozzle b. Then, when the bottom plate c moves forward most and the cartridge a becomes empty, the lid member 31 is removed, the cartridge a is taken out from the cartridge loading portion 3, and the cartridge a is loaded into the cartridge loading portion 3 from the front end at which a new cartridge a is opened. do it. When the cartridge a is loaded, the bottom plate c presses the plunger 61 in the cartridge loading section 3 so as to retreat.
The feed strip plate material 6 is fed into the storage frame portion 5 and stored while being wound along the inner peripheral surface, and returns to the initial state.

FIG. 8 shows a second embodiment of the present invention in which the cartridge loading section 3 is formed in a tubular shape detachable from the operation frame section 4. Specifically, the small hole 32 is formed at the closed end of the cylindrical cartridge loading portion 3 having one end open, and a flange 33 is provided on the outer peripheral surface of the open end. An annular external thread portion 44 is provided on the outer periphery of the partition wall 42 located therein, and the ring-shaped internal thread portion 45 is threaded with the open rear end of the cartridge loading portion 3 fitted in the interior of the external thread portion 44. The flange portion 33 and the male screw portion 44 are fastened to each other to firmly hold the male screw portion 44 and the cartridge mounting portion 3. When the female screw portion 45 is removed from the male screw portion 44, the cartridge mounting portion 3 can be removed. Therefore, the cylindrical cartridge mounting portion 3 is detachable from the operation frame portion 4.

With such a configuration, the cartridge a
Even if the lengths are different, the liquid discharging gun 1 can be configured by selectively using the cartridge loading unit 3 corresponding to the length, so that the versatility is improved. In addition, since the cartridge loading portion 3 is removed when the cartridge a is attached or detached, the cartridge a can be easily and securely loaded. The above-mentioned known leaf spring made of steel and provided with a return ring is used. When the plunger is retracted, the leaf spring is folded back below the cartridge loading section and stored therein, and the gun having the structure of this embodiment cannot be used. In the present embodiment, reference numerals that are not described have the same configurations as the same reference numerals in the above-described embodiment, and thus description thereof will be omitted.

In the third embodiment of the present invention shown in FIGS. 9 and 10, the left and right shafts 53 provided at the center of the take-up drum 52 are rotatably provided on the left and right wall surfaces of the storage frame portion 5 so that the winding is performed. The take-up drum 52 is rotatably provided inside the storage frame 5, and one shaft 5 extending to the outside of the storage frame 5.
3 is provided with a rotation lever 54, and a winding drum 52 is provided from outside.
Can be rotated, and the rear end of the feed strip 6 is fixed to the surface of the winding drum 52 and wound around the outer peripheral surface.

With such a configuration, the cartridge a
When the plunger 61 is most advanced and the feeding strip 6 is extended, the winding drum 52 is rotated by the rotation lever 54 to wind up the feeding strip 6, and the plunger 61 is rotated. Since the plunger 61 and the feeding strip 6 are retracted by the cartridge a, the plunger 61 and the feeding strip 6 do not need to be moved backward, so that it is easy to use, and the feeding strip 6 and the plunger 61 are securely returned to the original state. You can go back.

Reference numerals not described in FIGS. 9 and 10 have the same configuration as the same reference numerals in the above-described embodiments, and a detailed description thereof will be omitted.

Although the present invention has been described with reference to the embodiment shown in the drawings, the present invention is not limited to the above-described embodiment, and can be implemented in any way unless the structure described in the claims is changed. can do. For example, the operating frame portion 4 may have any configuration as long as it is held only when the feeding strip 6 is advanced, and is opened when the feeding strip 6 is retracted. Also,
The cartridge loading section 3 may have any configuration as long as the cartridge a can be attached and detached.

[0026]

In summary, the present invention provides an operation frame portion of a feed frame provided on a lever and a storage frame for a feed strip plate material provided with a plunger at the tip, behind a cartridge loading portion provided on a gun body. The feeding frame is moved out of the storage frame portion by operating the lever by operating the lever, and the feeding strip is fed out of the storage frame portion, and the plunger is advanced to discharge the liquid in the cartridge loading portion. It is characterized by.

Therefore, the diameter of the cartridge loading portion can be freely set, so that it can be applied to any size liquid extraction gun. Further, since the rod does not extend to the rear of the gun and there is no band plate material on the lower surface of the cartridge loading portion, not only can the cartridge loading portion of any structure be used, but also the workability is good. Furthermore, since the gun can be stably and reliably gripped and operated at the time of liquid extraction, the direction of liquid extraction is not erroneous, work efficiency can be significantly improved, and the structure is simple. High strength and extremely high practical value.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view showing a state in which a plunger is advanced in a first embodiment of the present invention.

FIG. 3 is a side view of a feed frame according to the first embodiment of the present invention.

FIG. 4 is a front view of the feeding frame according to the first embodiment;

FIG. 5 is an exploded perspective view of the above-described feed frame.

FIGS. 6A, 6B, and 6C are side views showing the process of advancing a feed frame.

FIGS. 7A, 7B, and 7C are side views showing a process of a retreat state of a feed frame.

FIG. 8 is a vertical sectional side view of a second embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a third embodiment of the present invention.

FIG. 10 is a longitudinal sectional view of a storage frame portion of a feeding strip in a third embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 liquid ejection gun 2 gun body 3 cartridge loading section 4 operation frame section 5 storage frame section 6 feed strip plate 7 feed block 8 operation lever 31 lid material 32 small hole 33 flange 41 grip 42 partition wall 43 through hole 44 Male thread part 45 Female thread part 51 Communication port 52 Winding drum 53 Shaft 54 Rotating lever 61 Plunger 71 Lower piece 72 Upper piece 73 Pin 74 First guide groove 75 Second guide groove 76 Guide pin 77 Coil spring 81 Support shaft 82 Spring material 83 Gripping part 84 Forked part 85 Third guide groove a Cartridge b Nozzle c Bottom plate

Claims (3)

[Claims] 1. An operation frame portion of a feed frame provided on an operation lever and a storage frame portion of a feed strip plate material provided with a plunger at a tip thereof are provided behind a cartridge loading portion provided on a gun body. By operating the feed lever in the operation frame portion in the front-rear direction by operating the operation lever, the feeding strip is pulled out from the storage frame portion, and the plunger is advanced to discharge the liquid from the cartridge loaded in the cartridge loading portion. A liquid dispensing gun characterized in that: 2. A storage frame portion of a feeding strip is formed in a vertically hollow circular frame shape, and a feeding strip material of a metal material is wound and stored along an inner surface of the storage frame portion in a circular frame shape. The liquid discharging gun according to claim 1. 3. A storage frame portion for a feeding strip is in the shape of a vertical circular frame, and a winding drum rotatable by an external operation is stored inside the hollow frame, and the feeding strip is formed of a winding drum. The liquid discharging gun according to claim 1, which is wound around the outer peripheral surface.