JPH059093Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an extrusion device for extruding extrudates such as adhesives, sealants, adhesive sealants, and fillers.

(Prior Art) Adhesive sealants are generally used for embedding anchor bolts, sealing sewerage works, repairing cracks in concrete structures, repairing floating parts of mortar and tiles, and the like.

For example, in the past, when repairing cracks in concrete structures or repairing floating parts of mortar or tiles, the repair work involved removing the entire repaired area and then re-covering it with new concrete, mortar, tiles, etc., but recently, strong and durable With the development of adhesives that have abrasive properties, a method of repairing cracks and floating areas by filling them with this adhesive has come into use.

By the way, in a conventional extrusion device, for example, a forward lock plate is loosely fitted to the extrusion rod, and this forward lock plate is swung in conjunction with the turning operation of a lever, so that the forward lock plate engages with the extrusion rod. However, there is one in which the extrusion rod moves forward to extrude the extrudate.

(Problem to be solved by the invention) However, in the extrusion device described above, when extruding an extrudate with high extrusion resistance, such as a high-viscosity adhesive sealant, the lever must be rotated to lock the forward movement. Even if the lever is rotated further after the plate is swung and engaged with the extrusion rod, the extrusion resistance is high, so a slip occurs between the forward lock plate and the extrusion rod, and the extrusion rod cannot move forward. First, there is the disadvantage that the extrudate cannot be extruded.

The present invention was made to solve the above-mentioned problems, and its purpose is to make it possible to extrude even extrudates with high extrusion resistance.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an extrusion rod with a forward lock plate having a length shorter in the engagement direction than the engagement hole of the forward lock plate with the extrusion rod. A pre-advance lock plate with an engagement hole was loosely fitted.

(Function) Since the engagement hole of the pre-forward lock plate is shorter in the engagement direction than the engagement hole of the forward lock plate, when the lever is rotated to rotate the forward lock plate, The pre-advance lock plate engages with the push-out rod before the advance-lock plate, and then the advance-lock plate engages with the push-out rod, and the push-out rod connects to multiple lock plates, the pre-forward lock plate and the forward lock plate. A large forward force (forward torque) is obtained when the lever is engaged and moved forward by the subsequent rotational operation of the lever.

(Example) An example of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a side view of an extrusion device embodying the present invention, and FIG. 2 is a plan view showing the same device in a cartridge-loaded state.

This extrusion device 1 has two cartridges 3.
two semi-cylindrical sleeves 3, loaded with 1, 32;
4, the distal ends of these two sleeves 3, 4 are connected by a distal end connecting plate 5, and the rear ends are connected by a rear end connecting plate 6 as shown in FIG. It is connected. These two sleeves 3, 4 and connecting plates 5, 6 are integrally molded.

Piston rods 8, 8 are inserted into the rod holes 7, 7 of the connecting plate 6 in the axial direction of the sleeves 3, 4, and pistons that push the bottom plungers of the cartridges 31, 32 are attached to the tips of these piston rods 8, 8. 9, 9 are respectively attached, and the rear ends of the piston rods 8, 8 are connected by a rod connecting plate 10.

A handle 11 is attached to the rear part of the rear end connecting plate 6 with screws 12, and the upper end of this handle 11 forms a housing part 13, and this handle 11
includes a lever 15 whose upper end faces the housing portion 13;
is rotatably supported by a shaft 16, and a roller 17 is rotatably supported by a pin 18 at the upper end of the lever 15.

Further, as shown in FIG. 7, the rear end connecting plate 6
An extruded rod 21 having a square cross section is inserted into the rod hole 19 and the rod hole 11a formed in the handle 11 so as to be movable in the axial direction of the sleeves 3, 4, and the rear end of this extruded rod 21 is connected to the piston rods 8, 8.
It is attached to the rod connecting plate 10 of. Note that the extrusion rod 21 is not limited to a rod with a square cross section, but may also be a rod with a round cross section, for example.

Further, within the housing portion 13 of the handle 11, as shown in FIG. 7, the pushing rod 21 is moved forward as shown in FIG. 4 and FIG. A lock plate 22 is fitted with some play, and a pre-forward lock plate 23 as shown in FIG.
with some play, and then lock the pre-advance lock plate 22.
A forward locking spring 2 is located below the push rod 21 between the front surface and the rear end connecting plate 6.
4 is interposed.

As shown in FIGS. 4 and 5, the forward lock plate 22 has a rectangular engagement hole 25 through which the push rod 21 is inserted, and the pre-forward lock plate 23
As shown in FIG. 6, a rectangular engagement hole 26 is formed into which the extrusion rod 21 is inserted. The length (width) W2 of the engagement hole 26 of the pre-forward lock plate 23 in the direction of engagement with the push-out rod 21 is the length (width) _W2 of the engagement hole 25 of the advance lock plate 22 in the direction of engagement with the push-out rod 21. (Width) Formed to be narrower than W ₁ , and the widths W ₁ and W ₂ of each engagement hole 25 and 26 in the direction of engagement with the extrusion rod 21 are both
is larger than the width in the engagement direction. Note that when a round rod is used as the extrusion rod 21, the engagement holes 25 and 26 are round holes, and the diameter of the engagement hole 26 (length in the engagement direction) is the diameter of the engagement hole 25. (length in the engagement direction).

Furthermore, a retraction lock hinge 28 is attached to the housing portion 13 of the handle 11, and a retraction lock plate 29 is swingably attached to the rear of the handle 11 to the retraction lock hinge 28.
1, a retraction locking spring 30 is interposed between the two. This retraction lock plate 29 is also formed with an engagement hole for engaging the extrusion rod 21, and in the state shown in FIG. By pushing the lower part forward from this state, the engagement hole and the push-out rod 21 are disengaged, allowing the push-out rod 21 to retreat.

Next, the operation of this embodiment configured as described above will be explained using an example of extruding a two-component reaction-curing adhesive sealant with reference to FIGS. 8 to 10.

First, for example, the main ingredient of a two-component reaction-curing adhesive sealant is filled into the cartridge 31, the curing agent is filled into the cartridge 32, and a forked head is inserted into each of the discharge ports 31a and 32a of these cartridges 31 and 32. 33, and a static mixer 34 is attached to the tip of this head 33.

Then, while pushing forward the lower end of the retraction lock plate 29 of the extrusion device 1, move the rod connecting plate 10 to the first position.
Pull in the direction of arrow A (rearward) in the figure to pull the piston rods 8, 8 backward, and draw the pistons 9, 9 toward the rear end connecting plate 6 side. At this time, the push rod 21 is also pulled rearward.

In this state, as shown in FIG.
2a is placed and set in each sleeve 3, 4 of the extrusion device 1 with the tip facing toward the tip.

Thereafter, by rotating the lever 15 of the extrusion device 1 in the direction of arrow B in FIGS. 1 and 7, the forward lock plate 22 in contact with the roller 17 at the upper end of the lever 15 is moved forward. The pre-forward lock plate 23, which is swung in the direction of arrow C in FIG. 7 against the biasing force of the locking spring 24 and is pressed against the forward lock plate 22 by the forward lock spring 24, also locks into the forward lock plate. 22 and swings in the direction of arrow C.

At this time, the engagement hole 26 of the pre-forward lock plate 23
The width W ₂ of the engagement hole 25 of the forward lock plate 22 in the direction of engagement with the extrusion rod 21 is
As shown in FIG. ₈ , the angle θ ₂ between the pre-advance lock plate 23 and the push-out rod 21 is, for example, 100°, as shown in FIG. When the pre-advance lock plate 23
The engagement holes 26 engage the upper and lower surfaces of the extrusion rod 21.

If the lever 15 is further rotated in the direction of arrow B from this state, the pre-advance lock plate 23 is already engaged with the push-out rod 21 and cannot be swung.
As shown in the figure, the extrusion rod 21 moves forward in the direction of arrow D, and the piston rods 8,
8 moves forward, the pistons 9, 9 move forward, and the main ingredient and curing agent of the two-component reaction-curing adhesive sealant in the cartridges 31, 32 are pre-extruded. Note that when the extrusion resistance is large at this time, the extrusion rod 21 may not move forward, and therefore, pre-extrusion may not be performed.

At this time, since the forward lock plate 22 is swingable, it swings by rotating the lever 15.
For example, as shown in the same figure, when the angle θ ₁ between the forward lock plate 22 and the push rod 21 becomes, for example, 105°, the engagement hole 25 of the forward lock plate 22 is connected to the upper surface of the push rod 21. Engages with the lower surface.

Therefore, by further rotating the lever 15 in the direction of arrow B, the pre-forward lock plate 23 and the pre-forward lock plate 22 engage with the push-out rod 21 and cannot swing, as shown in FIG. like,
As the lever 15 rotates, the extrusion rod 21 moves forward in the direction of arrow D, and accordingly, the piston rods 8, 8 move forward, and the pistons 9, 9 move forward, causing the two-component reaction curing in the cartridges 31, 32. The main agent and curing agent of the mold adhesive sealant are extruded, and the head 3
3, the liquid is extruded into a static mixer 34, mixed, and then discharged.

In this case, since the forward lock plate 22 and the pre-forward lock plate 23 are engaged with the extrusion rod 21, the extrusion force (extrusion torque) of the extrusion rod 21 increases, and the contents in the cartridges 31, 32 increase. Even if the extrusion resistance is large due to viscosity, it can be extruded reliably.

Furthermore, in this extrusion device 1, since the two sleeves 3, 4 and the rear end connecting plate 6 are integrally molded, the piston rod 8,
8 against the sleeves 3 and 4 is eliminated, and leakage of the contents from the bottom plungers of the cartridges 31 and 32 can be prevented.

Furthermore, by using an extrusion device like this embodiment, it is possible to embed anchor bolts, for example.
It becomes possible to extrude high-viscosity two-component reactive curing adhesive sealants used for sealing sewerage works, repairing cracks in concrete structures, repairing floating parts of mortar and tiles, etc.

In other words, conventionally, the extrusion equipment used in this type of construction is something like a grease gun that extrudes a single component, so when using a two-component reaction-curing adhesive sealant, the base agent and a curing agent were mixed together to form a single liquid, which was then stored and extruded.

However, when the main ingredient and curing agent of a two-component reaction-curing adhesive sealant are mixed together, curing begins immediately.
When using an adhesive sealant with a short curing time, there is a risk that it will harden in the gun and become unusable. Therefore, it is not possible to prepare a large amount of adhesive at once, and the work must be interrupted frequently. Work efficiency is poor because adhesive must be prepared, and because conventional guns can hardly be disassembled and cleaned, adhesive adheres to the inside after one or two uses, making them unusable. It was closed.

On the other hand, according to the extrusion device of the present invention, since it is equipped with two extrusion sections, the main ingredient and curing agent of the two-component reaction-curing adhesive sealant are filled into separate cartridges. The adhesive sealant can be extruded from each cartridge and mixed when used, and since it is in a cartridge, the cartridge can be replaced after use, and the extrusion device does not become unusable, allowing for efficient extrusion of adhesive sealant. I can do it.

In the above embodiment, an example was described in which one pre-advance lock plate was provided, but a plurality of pre-advance lock plates may be provided, and each pre-advance lock plate independently engages with the extrusion rod. By doing this, you can obtain greater forward force.

In addition, in the above embodiment, an example was described in which the present invention was implemented in an extrusion device for extruding the main ingredient and curing agent of a two-component reaction-curing adhesive sealant, but the present invention is not limited to this, and other general Of course, the present invention can also be implemented in extrusion devices for one-component adhesives, adhesive sealants, fillers, etc., and two-component adhesives, fillers, etc.

(Effects of the invention) As explained above, according to the invention, a pre-forward lock plate is provided together with the forward lock plate, which has an engagement hole whose length in the engagement direction is shorter than the engagement hole of the forward lock plate. Therefore, the extrusion rod is moved forward by rotating the lever while being engaged with the pre-advance lock plate and the advance lock plate, and a large extrusion torque is obtained, making it possible to extrude even extrudates with large extrusion resistance. I can put it out.

[Brief explanation of the drawing]

Fig. 1 is a front view of an extrusion device embodying the present invention, Fig. 2 is a plan view showing the device loaded with a cartridge, Fig. 3 is a front view of the rear end connecting plate of the device, Figs. Fig. 5 is a front view and side view of the forward lock plate of the same device, Fig. 6 is a front view of the pre-advance lock plate of the same device, Fig. 7 is an enlarged schematic view of the main parts of the same device, and Figs. FIG. 10 is an explanatory diagram for explaining the operation of the device. In the drawings, 1 is an extrusion device, 3 and 4 are sleeves, 6 is a rear end connecting plate, 8 is a piston rod, and 9
is a piston, 10 is a rod connecting plate, 11 is a handle,
15 is a lever, 17 is a roller, 21 is an extrusion rod, 22 is a forward lock plate, 23 is a pre-forward lock plate, 25 and 26 are engagement holes, 31 and 32 are cartridges, 33 is a head, and 34 is a static mixer. be.

Claims (1)

[Scope of utility model registration request] By loosely fitting the forward lock plate into the extrusion rod and causing the forward lock plate to swing in conjunction with the turning operation of the lever, the forward lock plate engages with the extrusion rod and the extrusion rod moves forward. In the extrusion device for extruding an extrudate, a pre-advance lock plate having an engagement hole whose length in the engagement direction is shorter than the engagement hole with the extrusion rod of the advance lock plate is loosely fitted into the extrusion rod. An extrusion device characterized by: