JP2003113352A - Method for bonding resin by dope cement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for bonding resins by a dope cement by applying the dope cement to the resins in adequate viscosity and coating amount. SOLUTION: This method for bonding resins by the dope cement comprises keeping a viscosity of the dope cement in an adequate value by using a viscosity inspection means of the dope cement and applying the dope cement having the adequate viscosity to resins to be bonded or packing the dope cement to the space between resins by using a quantitative discharge means. In the bonding method, a viscosity inspection device 31 having an inclined surface 33 for making the dope cement flow down, providing a protruded piece 34 extending the inclined surface and horizontally protruded on the uppermost part 36 of the inclined surface and passing a dropping hole 49 for dropping the dope cement through the protruded piece 34 and further having 10-60 deg. tilting angle θ is used as the viscosity inspection means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin bonding method using dope cement, and more particularly to a resin bonding method using dope cement in which the dope cement is applied to the resin at an appropriate viscosity and application amount.

[0002]

2. Description of the Related Art When a resin product is manufactured using a dope type cement, the dope type cement can be used in two ways. One is to bond the resins together, and the other is to fill the gap between the resins.
A brush, a brush or the like is used to apply the dope cement to the parts. Especially when filling the gap, if the viscosity is too low, the dope cement must flow into other parts or must be applied multiple times. On the other hand, if the viscosity was too high, it did not penetrate into the adhesive surface, resulting in poor adhesion.

Further, when the dope cement is dipped in a brush or the like and applied to a resin product as an adherend to perform adhesion, when the gap between the surfaces to which the dope cement is applied is large, the dope cement applied from the brush is With the amount, it flowed into the gap, and it was necessary to first coat, then naturally dry, and then to repeat multiple coatings.

In addition, the solvent for making dope cement is generally highly volatile, and the solvent component volatilizes during the day's work,
The viscosity of the dope cement changed and it was necessary to inspect and adjust the viscosity 3 to 4 times a day.

Further, it is important to measure the viscosity of the dope cement before the assembling work, and the viscosity control at that time is a device capable of measuring the viscosity by the resistance when the dope cement is agitated (a single cylinder type rotational viscosity). Was used.

[0006]

However, the highly volatile dope cement has a problem that the viscosity changes during the measurement of the viscosity, and the measuring time is long. Also, the dope cement solidifies in the rotational viscometer after measurement,
It took a considerable time to clean the equipment such as cleaning the rotational viscometer after the measurement.

An object of the present invention is to provide a method for adhering a resin by means of dope cement which solves such problems and applies dope cement to the resin at an appropriate viscosity and application amount.

[0008]

In order to achieve such a subject, the present invention provides a method for adhering resins with each other using dope cement or for filling gaps between resins with dope cement. In, in order to maintain the viscosity of the dope cement to an appropriate value by using the viscosity inspection means of the dope cement, using the quantitative discharge means of the dope cement of the appropriate viscosity, to apply to the resin to be bonded, or resin Is a method of adhering a resin with dope cement to be filled in the gap of, wherein the viscosity testing means has an inclined surface for the dope cement to flow down, and the inclined surface is extended to the uppermost portion of the inclined surface and horizontally projected. A viscosity in which a projecting piece is provided, a dropping hole for dropping dope cement into the projecting piece is penetrated, and an inclination angle of the inclined surface is in a range of 10 degrees to 60 degrees. In bonding method of the resin by doping cement using 査 device.

According to the first aspect of the invention, the viscosity of the dope cement is maintained at an appropriate value by using the viscosity inspection means of the dope cement, and the dope cement having the appropriate viscosity is used by the quantitative discharge means. A method for adhering a resin by applying it to a resin to be adhered or filling a gap between the resins with a dope cement, wherein the viscosity testing means has an inclined surface for the dope cement to flow down, and the uppermost part of the inclined surface A projecting piece that extends horizontally by providing an inclined surface is provided, a dropping hole for dropping dope cement is penetrated through the projecting piece, and the inclination angle of the inclined surface is 10
Since it is a method of adhering resin with dope cement using a viscosity tester in the range of 60 to 60 degrees, it becomes possible to apply dope cement to the resin with an appropriate viscosity and application amount. By measuring the time until it flows down the inclined surface, the difference in viscosity can be easily inspected, and the measurement time is short.

A second aspect of the present invention is the method for adhering resin with dope cement according to the first aspect, wherein the fixed amount discharge means includes a storage means, a discharge means and a discharge amount adjusting means.

According to the second aspect of the present invention, since the fixed amount discharge means includes the storage means, the discharge means, and the discharge amount adjusting means, the method of adhering the resin with the dope cement is more reliable. The dope cement can be applied to the resin with an appropriate viscosity and application amount.

The invention according to claim 3 is the method for adhering a resin with dope cement according to claim 2, wherein at least the material of the surface of the inclined surface is one selected from polyethylene, polypropylene or polyacetal. .

According to a third aspect of the present invention, in the method for adhering a resin with dope cement according to the second aspect, at least the material of the surface of the inclined surface is one selected from polyethylene, polypropylene or polyacetal. Therefore, even if the dope cement is hardened after the viscosity test, the surface of the inclined surface is made of the above-mentioned material, so that the peelability is good, and it is not necessary to clean the viscosity test device after the test. The man-hours for preparation can be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a fixed amount discharging means for dope cement used in the present invention. FIG. 2 is a schematic view showing a valve body which is a discharging means according to the present invention. FIG. 3 is a diagram in which a piston is pushed up in the valve body, which is the discharge means according to the present invention, to generate a gap.
FIG. 4 is a view showing a means for inspecting the viscosity of dope cement according to the present invention. FIG. 5 is a sectional view taken along line AA in FIG.

As shown in FIGS. 4 and 5, the viscosity inspecting means 31 has an inclined surface 33 for allowing the dope cement to flow down, and an inclined surface is extended to the uppermost portion 36 of the inclined surface to project a horizontally protruding piece. 34 is provided, a set hole 35 for setting a container such as a spoid containing dope cement for dropping the dope cement on the projecting piece 34, and a hole 49 for dropping is further penetrated.

The inclination angle θ of the inclined surface 33 can be appropriately selected from 10 degrees to 60 degrees. As a viscosity management method, a scale 39 and a pass range 41 are specified on the inclined surface 33, and for comparison, the dope cement having a viscosity that is the center value of the acceptable range measured in advance by the rotational viscometer is the inclined surface 33. The time to reach the center line 45 of the acceptable range is measured, and a buzzer or the like sounds at this time. Then, the dope cement to be inspected is flown on the inclined surface 33, and when the buzzer sounds, the tip of the dope cement liquid passes the acceptable range 41.
It is judged whether it is inside or not.

Here, the dope cement is used as a dope cement by dissolving a small amount of plastic to be joined in a solvent. The dope cement can improve workability by adding a resin to the solvent to control the evaporation rate and the viscosity. The appropriate amount of resin added is about 1.5 to 15%.

Polycarbonate, polypropylene, ABS resin, modified polyphenylene oxide, etc. can be used as the resin for the dope cement. For example, modified polyphenylene oxide is used for bonding the modified polyphenylene oxide resin. As the solvent, methylene chloride, THF or the like can be used.

If the tip of the dope cement liquid is above the pass range, it can be determined that the viscosity is high,
The solvent is further added to the dope cement to reduce the viscosity. On the other hand, if the tip of the dope cement liquid is located below the acceptable range, it can be determined that the viscosity is low,
By adding resin pellets to the dope cement and melting it,
Work to increase viscosity.

Regarding the inclination angle θ of the inclined surface 33, by changing the inclination angle according to the use of the dope cement, the viscosity of the dope cement having different viscosity levels can be adjusted without changing the inspection time and the position of the passing range 41. Can be inspected. If the inclination angle θ is smaller than 10 degrees, the inclination angle becomes too small, the flow velocity of the dope cement becomes too slow, the inspection time becomes long, and the work efficiency deteriorates. On the other hand, when the inclination angle θ is larger than 60 degrees, the inclination angle becomes too large and the dope cement flows to the lowermost end of the inclined surface 33 in an extremely short time, so that the pass range 41 cannot be set.

For the viscosity tester having different tilt angles, several devices may be separately manufactured for each tilt angle, and although not shown, the tilted surface 33 is formed into a plate shape and tilted by providing a multi-step locking portion. Either means may be provided to make the angle θ variable.

As a method for inspecting the viscosity, as shown in FIGS. 4 and 5, a spoid 37 or the like is installed in the set hole 35,
1 to 2 g of the dope cement liquid 47 is dropped onto the inclined surface 33 through the dropping hole 49. Then, if the buzzer set in advance sounds, the position of the tip of the dope cement liquid 47 on the inclined surface 33 is confirmed. At that time, if it is within the pass range 41, it is determined as pass, and the inspected dope cent is applied as it is. If it is out of the pass range 41, the viscosity of the liquid 47 of the dope cement is adjusted, and then the viscosity test is performed again. . In addition, the liquid 47 of the dope cement flowing down the inclined surface 33 is the dope cement receiving groove 4
It is preferable to store it in No. 3 so that it does not leak outside.

In the present invention, since at least the surface material of the inclined surface 33 is made of a material selected from polyethylene, polypropylene and polyacetal,
Even if the dope cement solidifies after the viscosity test, it can be immediately peeled off from the inclined surface 33, and it is not necessary to clean the solidified resin for the next measurement, and the number of working steps can be reduced.

The dope cement that has been inspected by the viscosity inspecting means and adjusted to have an appropriate viscosity is stored in the storage tank 3 which is the storage means shown in FIG. Since the storage tank 3 is provided with the upper lid 8, the solvent of the dope cement is not dried and the viscosity of the stored dope cement does not change.

When the hand switch 12 is pressed, the dope cement stored in the storage tank 3 is supplied into the storage tank 3 through the tank pressurizing pipe 11 to pressurize the storage tank. Then, the dope cement in the storage tank 3 is sent to the liquid delivery pipe 7 by the action of the storage tank pressure as the pressurization by the air, and is sent to the valve body that is the discharging means. The flow velocity of the liquid at this time is adjusted by the liquid feed valve 10 installed in the storage tank 3. Alternatively, it may be adjusted by the flow rate adjusting knob 14 in the controller 9, and the flow rate controlling means is not particularly limited.

On the other hand, as shown in FIGS. 2 and 3, it is necessary to adjust the volume of the gap 22 through which the liquid flows into the nozzle 19 in order to adjust the discharge amount of the dope cement. For this purpose, a valve supply air adjustment knob 16 of the controller 9 adjusts the valve operation air pressure from an air supply device (not shown), and the valve operation air pressure is sent to the drive air connection port 23 of the valve body 5 through the valve operation air pipe 13 and the piston 15 Push up. As a result, the needle is also pushed up and a gap 22 is generated in the nozzle 19. Then, the liquid agent supply port 21
The dope cement supplied from the above is supplied to the object through the gap 22. The supply amount is adjusted by changing the volume of the gap 22 in the nozzle 19. To this end, the amount of pushing up the piston 15 is adjusted by adjusting the air pressure supplied to the valve to adjust the gap 2
Change the volume of 2.

The discharge amount of the dope cement as a whole is the opening time of the valve, the pressure of the liquid agent generated by pressurizing the storage tank 3, the flow rate adjustment of the dope cement by pushing up the piston 15, the tip of the nozzle 19. It is determined by the combination of diameter and viscosity. As an embodiment, the storage tank pressure is 0.1 MPa to
0.4 MPa, the valve operating air pressure is 0.1-6.8.
It can be adjusted to MPa.

[0028]

EXAMPLES Next, specific examples of a method for adhering a resin with dope cement according to the present invention will be described.

The dope cement for adhesion was previously measured with a rotational viscometer and found to be 132.3 mPa · s.
When the same dope cement for adhesion was used with the viscosity tester of the present invention having an inclination angle of 30 degrees and the measurement time was 5 seconds, the measurement was performed 3 times and a distance of 9 to 10 cm on the slope. It ran off. Therefore, from the hole for dripping 9
The acceptable range was set in the range of 10 cm to 10 cm. Then, when the viscosity of the dope cement for adhesion was inspected 10 times on each production day, it was measured 10 times by the rotational viscometer, and it took time to remove the dope cement after the inspection, and it took about 1 hour in total. In the case of the viscosity testing device of the present invention, the testing can be completed in 10 minutes, which significantly reduces the man-hours.

Then, the dope cement maintained at the above viscosity was put into a storage tank, and in Example 1, the storage tank pressure was set to 0.1 MPa and the valve operating air pressure was 0.35 M.
It was set to Pa. Then, the hand switch was turned on and the dope cement was discharged. The tip diameter of the nozzle at this time is 1 m
It was m. It was used to fill a small gap in the resin. The dope cement was discharged in a discontinuous state, but it was sufficient to fill the small gaps in the resin, the excess dope cement was not consumed, and the manufacturing cost was suppressed.

In Example 2, the storage tank pressure was 0.3.
5MPa, valve operating air pressure 0.35MPa
Set to. Then, the hand switch was turned on and the dope cement was discharged. The tip diameter of the nozzle is 1 as in Example 1.
It was mm. As an application, it was used for adhesion and was used to adhere resin over the entire surface. Dope cement was continuously discharged in an amount sufficient for continuous discharge and adhesion.

[0032]

As described above, in the present invention, the viscosity of the dope cement is maintained at an appropriate value by using the viscosity inspecting means of the dope cement, and the dope cement having the proper viscosity is used by the quantitative discharging means. A method for adhering a resin by applying it to a resin to be adhered or filling a gap between the resins with a dope cement, wherein the viscosity testing means has an inclined surface for the dope cement to flow down, and the uppermost part of the inclined surface Providing a protruding piece that extends the inclined surface and horizontally protrudes,
It is a method of adhering a resin with dope cement using a viscosity tester in which a dripping hole for dripping dope cement into the projecting piece is penetrated and a tilt angle of the inclined surface is in a range of 10 to 60 degrees. Therefore, it becomes possible to apply the dope cement to the resin with an appropriate viscosity and application amount, and to easily inspect the difference in viscosity by measuring the time until the dope cement flows down the inclined surface. This has the effect that the measurement can be performed and the measurement time can be reduced.

According to the invention described in claim 2, since the fixed amount discharging means includes the storing means, the discharging means and the discharge amount adjusting means, the method of adhering the resin by the dope cement according to claim 1 is more reliable. Moreover, there is an effect that the dope cement can be applied to the resin with an appropriate viscosity and application amount.

According to the invention of claim 3, at least the surface material of the inclined surface is one selected from polyethylene, polypropylene or polyacetal, the resin bonding method using dope cement according to claim 2. Therefore, even if the dope cement is hardened after the viscosity test, the surface of the inclined surface is made of the above-mentioned material, so that the peelability is good, and it is not necessary to clean the viscosity test device after the test. There is an effect that the man-hours for the preparation can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic view showing a quantitative discharge means for dope cement used in the present invention.

FIG. 2 is a schematic view showing a valve body that is a discharging means according to the present invention.

FIG. 3 is a diagram in which a gap is generated by pushing up a piston with a valve body that is a discharging unit according to the present invention.

FIG. 4 is a perspective view of a viscosity inspecting means for dope cement according to the present invention.

5 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

1 Constant discharge means 3 storage tanks 5 valve body 7 Liquid supply piping 9 Controller 10 Liquid feeding valve 11 Pressurized piping 13 Valve operation air piping 15 pistons 16 Valve air supply adjustment knob 19 nozzles 21 Liquid agent supply port 22 Gap 23 Air connection port for driving 31 Viscosity tester 33 inclined surface 35 set holes 37 Spoid 39 scale 41 Pass range 43 Dope cement receiving groove 45 Center line of pass range 47 Dope cement liquid 49 Drip hole

Claims (3)

[Claims] 1. A method of adhering resins to each other using dope cement or filling a gap between resins with dope cement by using a viscosity inspecting means of dope cement so that the viscosity of dope cement is adjusted to an appropriate value. A method for adhering a dope cement having a proper viscosity, which is applied to a resin to be adhered, or filled in a gap between the resins, with a dope cement having an appropriate viscosity, wherein the viscosity inspection means is a dope. It has an inclined surface for the cement to flow down, and an inclined surface is provided at the uppermost part of the inclined surface to provide a protruding piece that horizontally protrudes, and a penetrating hole for dropping the dope cement on the protruding piece is penetrated. And a method for adhering resin with dope cement, characterized in that a viscosity testing device having an inclination angle of the inclined surface in the range of 10 degrees to 60 degrees is used. 2. The method for adhering a resin with dope cement according to claim 1, wherein the fixed amount discharge means includes a storage means, a discharge means, and a discharge amount adjusting means. 3. The method for adhering a resin with dope cement according to claim 2, wherein the material of at least the surface of the inclined surface is one selected from polyethylene, polypropylene or polyacetal.