JP2006055787A - Gun for applying adhesive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gun for applying an adhesive which enables long-term continuous operation without requiring a large force for extruding the adhesive, and enables uniform application of the adhesive. <P>SOLUTION: An extrusion plate 6 equipped with a feed screw 4 at the rear is disposed in a holder 1 into which a pack is charged. A power tool fitting part 16 to which the tip end of a power tool 36 is fitted is installed at the rear side of the holder 1, and rotation of the power tool 36 fitted to the fitting part 16 is transmitted to a drive nut 8 through a power transmission mechanism. The drive nut 8 is rotated around the feed screw 4 to carry forward the feed screw 4 and the extrusion plate 6, which extrudes the adhesive in the pack. The adhesive is extruded by the power of the power tool, which does not make a worker tired. The need for drawing a hose and a power code is eliminated, which makes workability good and the uniform application of the adhesive is enabled. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an adhesive application gun used when an exterior material such as a tile is attached to a wall surface of a building.

  For building exteriors, exterior materials such as ceramic tiles have been used because of their excellent durability and maintainability. Conventional tiles are often pasted by applying mortar to the base surface, and the pasting is usually performed manually at the construction site.

  Recently, however, ceramic bricks, which are different from conventional tiles and have excellent design and durability, have been developed as exterior materials, and a one-component solventless type adhesive is used for the construction. However, it is not easy to apply this adhesive evenly on the ground surface by hand like conventional mortar. Therefore, an attempt was made to apply the packed adhesive using a manual caulking gun as shown in Patent Document 1 or Patent Document 2, but the manual caulking gun exerted a great force on the extrusion of the adhesive. In other words, there is a problem that it is difficult to endure long-time work because it causes significant fatigue of the worker.

It was also attempted to supply the adhesive pressurized by the pump to the tip of the nozzle using a pressure hose. However, when working at high places, it is not easy to route the hose from the pump installed on the ground. It turned out to be impractical because it worsened.
JP 2003-213926 A JP-A-8-299875

  The object of the present invention is to solve the above-mentioned problems, and it is possible to perform continuous work for a long time without requiring a large force for extruding the adhesive. And it is providing the gun for an adhesive agent which can apply | coat an adhesive agent to a base surface uniformly.

  An adhesive application gun according to the present invention made to solve the above-described problems has an extrusion plate provided with a feed screw on the back inside a holder in which an adhesive pack is loaded, and a rear portion of the holder. Is provided with a drive nut that rotates around the feed screw to advance the feed screw, and a mounting portion for the power tool that attaches the tip of the power tool to the rear side of the holder. A power transmission mechanism for transmitting the rotation of the electric tool to the drive nut is provided.

  The drive nut that rotates around the feed screw is a separable nut, and is preferably screwed into the feed screw in the closed state and can be pulled back in the open state. It is preferable to adopt a structure incorporating an opening mechanism of a possible drive nut.

  The adhesive application gun according to the present invention is provided with a portable power tool such as an electric drill or an electric screwdriver, which is widely used in construction work sites, mounted on the mounting portion of the electric tool, and the rotation is driven by a power transmission mechanism. The feed screw is advanced and the rear part of the pack is pushed out by the pushing plate. For this reason, the operator only has to operate the switch, and fatigue is not caused even when the operation of applying the adhesive is performed. In addition, since it does not have a dedicated power source, it is lightweight and has the advantage of being inexpensively manufactured. Furthermore, since an existing rechargeable electric tool can be used as a power source, there is an advantage in that it is not necessary to draw a power cord and the workability is excellent, and the adhesive can be more uniformly applied than in the case of manual work.

  Further, as shown in claims 2 and 3, the drive nut can be divided, and if the opening mechanism is incorporated, the feed screw and the push-out plate can be pulled back by opening the drive nut. There is an advantage that can be performed quickly and easily.

  Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings. FIG. 1 is an overall view of an adhesive application gun according to the present invention. Reference numeral 1 denotes a cylindrical holder in which an adhesive pack is loaded, and a pack holding lid 3 having a nozzle 2 at its front end is detachable. It is attached to. A commercially available pack of 2 kg can be used as the adhesive pack. A long feed screw 4 is inserted through the center of the holder 1 so as to be movable back and forth. A sleeve 5 for supporting the feed screw 4 is provided at the rear end of the holder 1 so that the feed screw 4 protrudes rearward. An extrusion plate 6 is attached to the front end of the feed screw 4. At the rear end of the feed screw 4 is attached a hook rod 17 bent in a U-shape for hooking an adhesive application gun on a scaffold or the like.

  A feed screw driving mechanism 7 for driving the feed screw 4 is provided at the rear portion of the holder 1. As shown in FIGS. 2 and 4, the feed screw drive mechanism 7 includes a drive nut 8 that rotates around the feed screw 4 to advance the feed screw 4, and a gear 9 that rotates the drive nut 8.

  As shown in FIG. 2, a sleeve 18 is provided at the rear end of the main casing 14 located at the rear portion of the holder 1, and a feed screw 4 is supported on the outer periphery of the sleeve 18. A gear 9 is attached to the outer periphery of the sleeve 18 via a bearing. Is provided. As shown in FIGS. 2 and 4, the drive nut 8 has a female screw formed on the inner periphery of the half cylinder, and the tip of an arm projecting outward is attached to the gear 9 by a pin 19. . A tension spring 20 is provided between the two divided drive nuts 8 and 8 and is biased in a direction to be screwed onto the outer periphery of the feed screw 4. When the drive nut 8 is closed and screwed with the feed screw 4 and rotated by the gear 9, the feed screw 4 moves forward.

  On the rear side of the holder 1, there is provided a power tool mounting portion 16 for mounting a tip of a portable power tool 36 represented by an electric drill or an electric screwdriver. A gear 15 having a fitting portion 32 with the rotating portion of the electric tool is provided inside the mounting portion 16. The rotation of the gear 15 is transmitted to the gear 9 by a power transmission mechanism including the gear 12 meshing with the gear 15, the connecting shaft 11, and the gear 10. For this reason, if the front-end | tip of the electric tool 36 is mounted | worn with the mounting part 16 of an electric tool and it rotates, the gearwheel 9 and the drive nut 8 will rotate, and the feed screw 4 can be advanced. As a result, the extrusion plate 6 moves forward, the rear end of the adhesive pack loaded in the holder 1 is pushed out, and the adhesive is pushed out from the nozzle 2.

  Note that the inner diameter of the mounting portion 16 is slightly larger than the outer diameter of a commercially available general electric tool, and a grind portion 33 is provided on the rear end side, and projecting pieces 34 are provided on both sides of the grinder portion 33. It is. The projecting piece 34 is provided with a screw hole 35. By inserting and tightening a screw into the screw hole 35, the grind portion 33 can be contracted and the electric tool can be fixed.

  As described above, the advancement of the feed screw 4 and the push-out plate 6 is performed by the rotation of the drive nut 8, but it is preferable that these can be quickly pulled back when the pack becomes empty. For this purpose, a drive nut release mechanism 13 is incorporated. The opening mechanism 13 includes an operating cylinder 21 that is supported by the feed screw 4 so as to be movable back and forth, a driving ring 22 that drives the operating cylinder 21, an operating arm 23 that operates the driving ring 22, and the like.

  The rear end of the working cylinder 21 is a tapered portion 24 that faces the front end of the drive nut 8. The front end of the actuating cylinder 21 is a disk part 26 having a groove 25 on the circumference. The disk part 26 is fitted in the drive ring 22 and has a pin 27 protruding from the drive ring 22 inside the groove 25. It is loosely fitted. The drive ring 22 has a support arm 28 provided at the upper end thereof supported by a pin 29 attached to the main casing 14, and an operation arm 23 extended rearward is connected to the lower end of the drive ring 22.

  An operation button 30 is attached to the rear end of the operation arm 23 so as to protrude downward from the main casing 14, and when the operation button 30 is pushed upward, the drive ring 22 rotates about the pin 29. When the drive ring 22 rotates, the pin 27 loosely fitted in the groove 25 pushes the disk part 26 rearward, and the operating cylinder 21 moves rearward as shown in FIG. 6 so that the taper part 24 is between the drive nut 8. Then, the drive nut 8 is opened. As a result, the screwing of the drive nut 8 to the feed screw 4 is released, and the feed screw 4 can freely move back and forth. Reference numeral 31 denotes a spring that holds the operation arm 23 in a state where the operating cylinder 21 does not open the drive nut 8.

The method of using the adhesive application gun of the present invention will be described below.
First, as shown in FIG. 6, when the operation button 30 is pushed upward, the drive nut 8 is unscrewed from the feed screw 4 as described above, and the feed screw 4 can freely move back and forth. In this way, the feed screw 4 is moved to the rearmost position. Next, the pack holding lid 3 is removed, the pack is inserted into the holder 1, and the pack holding lid 3 is attached again. Thereafter, the operation button 30 is operated to screw the drive nut 8 into the feed screw 4. Further, the rechargeable electric tool 36 is inserted from the rear end of the mounting portion 16, and the rotating portion of the electric tool 36 is fitted to the fitting portion 32 of the gear 15.

  When the switch of the electric tool 36 is operated and rotated, the gear 15 rotates, and the gear 9 and the drive nut 8 also rotate through the power transmission mechanism. Since the feed screw 4 is pressed against the pack, the feed screw 4 is restrained from rotating by friction. When the drive nut 8 is rotated, the feed screw 4 moves forward and pushes the adhesive from the nozzle 2. The push-out amount of the adhesive can be freely adjusted by rotating the electric tool 36 or repeating the operation stop.

  After all of the adhesive in the pack attached to the holder 1 has been pushed out, the pack needs to be replaced in order to continue application of the adhesive. At this time, the electric power tool 36 can be reversed, but if the drive nut 8 is unscrewed from the feed screw 4 by pushing the operation button 30 upward, the feed screw 4 can be directly and freely moved, and then retracted at a stretch. Can be pulled back to position.

  As is apparent from the above description, according to the adhesive application gun of the present invention, the adhesive in the pack is pushed out by the power of the electric tool, so that no force is required for pushing out, resulting in worker fatigue. There is nothing. Further, there is no need to route a hose or a power cord, and there is an advantage of excellent workability. Further, the adhesive can be applied more uniformly than in the case of manual work.

It is a vertical side view of the adhesive application gun of the present invention. It is a vertical side view of the principal part. It is a rear view of the gun for adhesive application of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a vertical side view which shows the state which open | released the drive nut. It is a vertical side view which shows the state which made the feed screw retreat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holder 2 Nozzle 3 Pack holding lid 4 Feed screw 5 Sleeve 6 Extrusion plate 7 Feed screw drive mechanism 8 Drive nut 9 Gear 10 Gear 11 Connection shaft 12 Gear 13 Drive nut release mechanism 14 Main casing 15 Gear 16 Mounting portion 17 Hooking rod 18 Sleeve 19 Pin 20 Tension spring 21 Actuating cylinder 22 Drive ring 23 Operation arm 24 Taper part 25 Groove 26 Disk part 27 Pin 28 Support arm 29 Pin 30 Operation button 31 Spring 32 Fitting part 33 Grinding part 34 Projection piece 35 Screw hole 36 Electric tool

Claims (3)

  Inside the holder where the adhesive pack is loaded, an extrusion plate with a feed screw is arranged at the rear, and a drive nut that rotates around the feed screw to advance the feed screw is provided at the rear of the holder. In addition, a power tool mounting portion for mounting the tip of the power tool is provided on the rear side of the holder, and a power transmission mechanism for transmitting the rotation of the power tool mounted on the mounting portion to the drive nut is provided. A gun for applying an adhesive.   The drive nut that rotates around the feed screw is a separable nut, and is configured to be screwed into the feed screw in the closed state and to be able to retract the feed screw and the pushing plate in the open state. The adhesive application gun according to 1.   The gun for applying an adhesive according to claim 2, further comprising an opening mechanism for a splittable drive nut.

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