JP4633494B2 - Manufacturing method of resin capsule anchor - Google Patents

Description

  The present invention relates to a method for producing a resin capsule anchor used for a post-construction anchor.

Conventionally, a method of manufacturing a resin capsule anchor composed of a two-component system for attaching bolts and reinforcing bars to a structure such as concrete later is filled with a hardener and a resin by forming a separating layer in a container, Alternatively, it is known that two or more separate layers of curing agent and resin are alternately stacked and filled in the container, or the container is filled with resin and aggregate and the curing agent is coated outside the container. (For example, refer to Patent Document 1, Patent Document 2, and Patent Document 3).
A method of filling a container with a hardener and a resin by forming a separation layer, or alternately laminating two or more layers of a hardener and a resin in a separate layer, and filling the container with two components. Since it is necessary to fill the above, there is a problem that the manufacturing process becomes complicated. In addition, when coating the curing agent outside the container, there are problems such as the amount of curing agent being non-uniform in the conventional method, poor yield of curing agent, low productivity, etc. Therefore, continuous production was difficult.
JP-A 61-225499 JP 2000-27599 A Japanese Utility Model Publication No. 48-32944

  An object of this invention is to provide the process suitable for continuous production which can manufacture efficiently the resin capsule anchor of the structure which can obtain sufficient mixing property of resin and a hardening | curing agent.

As a result of intensive research to solve the above-mentioned problems, the present inventors applied a slurry-like curing agent to the outer periphery while rotating a container containing a resin, wound and dried, and is suitable for continuous production. Invented that a resin capsule anchor manufacturing process is obtained.
That is, the present invention is as follows.
1. A method for producing a resin capsule anchor, characterized in that a slurry-like curing agent is wound around an outer periphery while a container is rotated and dried.

  According to the present invention, it has become possible to provide a manufacturing process suitable for continuous production of resin capsule anchors.

Hereinafter, the present invention will be specifically described focusing on preferred embodiments.
The production method of the present invention is characterized in that a slurry-like curing agent is applied to the outer periphery while rotating a container containing resin or resin and aggregate, and is wound and dried.
Conventionally, reactive resin and hardener are separated and stored in a container, and when concrete is installed, the container is broken by rotating or hitting anchor bolts, etc., and the resin and hardener are mixed and reacted to fix the concrete and bolt etc. In order to prevent this, a method of placing a resin inside the container and possibly an aggregate and placing a curing agent on the outside of the container is used, but it is necessary to store a stoichiometrically appropriate amount of the resin and the curing agent. There is.

In particular, since a hardener such as benzoyl peroxide is mainly used, it is necessary to perform quantitative filling and efficient production. The hardener slurry with a constant concentration is applied to the outside of the container, preferably with a metering pump, and is applied to the outer circumference of the container to a uniform thickness. Drying while maintaining this rotation As a result, the inventors have invented that a certain amount of the curing agent adheres with a uniform thickness in the circumferential direction and is continuously produced.
The container is preferably made of a hard material such as glass or plastic, and may be a straight tube or a tube having a throttle portion as long as it is cylindrical.

The number of rotations when the curing agent is wound around the container is adjusted so that the curing agent spreads uniformly and is applied to the entire circumference of the container according to the diameter of the container and the concentration of the curing agent slurry. When it is -18 mm, it is 80-180 rpm, More preferably, it is 100-160 rpm, More preferably, it is 120-140 rpm.
When the viscosity of the curing agent slurry is high, it is preferable to decrease the rotation speed, and conversely, when the viscosity of the curing agent slurry is low, it is preferable to increase the rotation speed. If it is too low, a phenomenon that the curing agent droops from the container is observed.
The viscosity of the curing agent slurry is preferably 0.5 to 3 Pa · s, and when it is 0.5 Pa · s or more, dripping of the slurry from the rotating glass tube recess can be prevented.

On the other hand, when the pressure is 3 Pa · s or less, unevenness of the curing agent can be prevented and the curing agent can be uniformly arranged in the circumferential direction.
However, since this optimum rotation speed depends on the slurry concentration used for the curing agent, the particle size of the solid component in the slurry, the temperature, etc., select the rotation speed at which the curing agent does not drip substantially without getting stuck on the container. Is good.
The metering pump discharge port for supplying the hardener slurry should have a structure that is close to the upper part of the outer periphery of the rotating container by a nozzle, and the metering pump is supplied once during the rotation of the container. However, even if it does not necessarily match exactly, the coating spreads in the circumferential direction during the rotation of the container after application, and a uniform thickness is formed.

Further, the nozzle, which is the application position of the metering pump, moves laterally intermittently in the axial direction of the container. There is a method of moving and supplying the curing agent slurry continuously during the movement, and it can be selected according to the form of the resin capsule to be manufactured.
Furthermore, in this method, when a glass container is used, the glass container is filled with resin or resin and aggregate, then sealed with flame, and then the curative is wound around and attached to the outside of the glass container. This is safe because pyrolytic benzoyl peroxide does not approach the flame.

The curing agent should contain a component that adheres to the outer periphery of the container with an appropriate hardness when dried in a slurry state. Specifically, a mixture of benzoyl peroxide and an inorganic substance such as calcium sulfate for reducing sensitivity. Make a water slurry with synthetic resin latex, water-soluble binder, etc. added to the outside of the rotating container with a metering pump, apply it, and then dry it. A curing agent having an appropriate hardness to be mixed is obtained.
The composition of the curing agent slurry is 30-50 parts of benzoyl peroxide, 50-70 parts of calcium sulfate, 1-3 parts of synthetic resin latex solids, 20-40 parts of water with a small amount of silica-based volume extender and water-soluble binder. It is preferable to mix.

The container may be a straight pipe or a pipe having a throttle part as long as it is cylindrical, and those having a throttle part apply the curing agent slurry supplied from the nozzle moved laterally intermittently to the throttle part. In the case of a straight pipe, the hardener slurry supplied from the nozzle is mechanically controlled so as to continuously supply the hardener slurry during continuous lateral movement. It is preferable to have a structure.
Drying is performed by supplying the curing agent slurry to the outside of the rotating container with a metering pump and then feeding it to a hot air dryer that is heated to evaporate the water in the slurry while maintaining this rotation. It is preferable to dry it.

The resin filled in the glass tube is curable unsaturated polyester resin, epoxy acrylate resin, or the like.
Next, the present invention will be described in more detail with reference to examples and comparative examples.

[Example 1]
FIG. 1 is a view of an apparatus for applying a slurry-like curing agent to the outer periphery while rotating a container containing a resin according to the present invention, and winding and drying the container.
FIG. 2 is an enlarged view of the apparatus in which the direction of the portion where the slurry-like curing agent is applied to the outer periphery is changed by 90 degrees while rotating the container.
Glass tube (1) with throttle part sealed with 14.5g of epoxy acrylate resin (outer diameter of glass tube 16.5mm thickness 0.55mm total length 120mm, throttle part outer diameter 9mm, throttle width 9mm, throttle groove number 5, The interval was 20 mm) and was fed by a feeding device (4) to a rotating gripper (3) operated by 80 cylinders on a belt conveyor (2) rotating intermittently at intervals of 5 seconds.

Both ends of the glass tube are held by the cylinder by the rotary grip jig (3), and the glass tube starts to rotate at 120 rpm. Next, a hardener slurry (40 parts of benzoyl peroxide, 60 parts of calcium sulfate, SB latex solids by a metering pump) 2 parts, 5 parts of a silica-based volume extender, and 22 parts of water) were intermittently supplied from a nozzle (5) having an inner diameter of 4 mm provided on the top of the glass tube throttle part.
The nozzle moved 20 mm pitch between the throttles in the direction of the glass tube axis and intermittently supplied from the nozzle to the adjacent throttle part. Similarly, after the completion of five throttle parts, the belt conveyor moved one pitch of the rotary gripper. Then moved to the next glass tube and repeated it.

The glass tube held by the rotary grip jig (3) and having the hardener slurry attached to the squeezing part was formed with a uniform thickness at the squeezing part as it was rotated, and was transported to the drying chamber (6) at 80 ° C.
The hardener in the squeezed portion of the glass tube held by the rotary grip jig (3) that has passed through the drying chamber is evaporated to form an appropriate hardness and discharged from the dryer. The amount of hardener after drying Was 3.5 g.
In this way, 720 resin capsule anchors were continuously discharged and manufactured per hour.
The resulting resin capsule anchor is shown in FIG.

  The present invention is suitable as a continuous production process for efficiently producing a resin capsule anchor.

The cross-sectional model of the apparatus used in the Example of this invention. The side surface schematic diagram which looked at the part which apply | coats a slurry-like hardening | curing agent to outer periphery, rotating the container of FIG. 1 from the direction at right angles to FIG. The plane schematic diagram of the resin capsule anchor obtained by this invention Example.

Claims (1)

A cylindrical container having an outer diameter 10~18mm the outer peripheral surface while rotating at a rotational speed 80～180Rpm, 30 to 50 parts of benzoyl peroxide, 50 to 70 parts of calcium sulfate, a synthetic resin latex solids 1-3 parts, and A substantially constant, characterized in that a slurry-like curing agent having a viscosity of 0.5 to 3 Pa · s obtained by mixing a small amount of a silica-based volume extender and a water-soluble binder in 20 to 40 parts of water is wound and dried. A method for continuously producing a resin capsule anchor in which an amount of a curing agent adheres to the outer peripheral surface with a substantially uniform thickness .