JPS6132131B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applicable to the dam rubber and sealing material that are required when, for example, attaching a fixed window glass of a car to a car body or fixing a window glass to a building. The present invention relates to a method and apparatus for mechanically applying chromium to the surface of glass.

[Prior art]

The term "dam rubber" as referred to in the present invention is used primarily to prevent the sealing material from being pushed out from a predetermined position and becoming unsightly when sealing a window glass by pressing it against a window frame etc. through a sealing material. It is a string-like article that is usually made of rubber and has an irregular cross section, and is usually attached with an adhesive along a sealant that has been applied to the glass in advance.
As mentioned above, it functions to dam the sealing material that is extruded when the glass is pressed together.

FIG. 10 is a perspective view illustrating the glass to which the sealing material and the dumb rubber are applied, and the sealing material 1 and the dumb rubber 2 are applied to the periphery of the glass, which is the adherend 3. FIG.

FIG. 11 is a sectional view to further clarify the positional relationship. The positional relationship between the sealing material 1 and the dam rubber 2 may be reversed depending on the purpose, and the sealing material 1 and the dam rubber 2 may be applied to the concave side of the adherend 3.

Conventionally, this type of glass installation work was done by applying only a sealant alone;
This is sometimes done by using a combination of sealant and dumb rubber, but because the sealant has adhesive properties, most of the work to apply it to the designated location is done by hand, or mechanically, it is done at most by copying method. The reality was that this was the case. However,
These conventional methods have very poor work efficiency and are difficult to form into a desired shape with desired accuracy.

Dumb rubber itself is vulcanized rubber, has a string-like irregular shape, and has an adhesive coated surface, so it is difficult to insert it into a mold to shape it in advance. In another sense, it is difficult to mechanize, and conventionally automatic application of dam rubber has not been practically performed, and automation is strongly desired in order to improve work efficiency and application accuracy. More recently, a transfer method has been proposed for applying sealant to glass by injecting it into a mold and forming it, and good results have been obtained, but there is also a technology that automatically applies both dumb rubber and sealant at the same time. Conventionally, this technology has not existed at all, and such technology is also strongly desired.

[Purpose of the invention]

The present invention has been made to solve the above problems, and it is possible to efficiently and automatically apply both dumb rubber and sealing material to window glass of automobiles and other adherends through a series of continuous operations. ,
Moreover, it is an object of the present invention to provide a method and apparatus that can obtain a predetermined shape with extremely high precision.

[Structure of the invention]

In order to achieve this objective, the method of applying the dam rubber and the sealant of the present invention involves forming a sealant injection molding groove in a sealant injection mold having a shape that follows the desired shape of the sealant to be adhered to the adherend. An adhesive sealing material is injected into the inside, and this sealing material is crimped and transferred onto the surface of the adherend, and at the same time, a dumb rubber made of vulcanized rubber is molded to follow the desired shape of the dumb rubber on the adherend. Insert the dam rubber one by one into the groove of the shaped dam rubber molding table from the tip side so that the adhesive coated side faces the outside,
This method is characterized by pressing and transferring the dam rubber onto the surface of the adherend.

Furthermore, the apparatus of the present invention used in the method of applying the above-mentioned dam rubber and sealant to an adherend works together to inject a sealant in a shape that follows the desired shape of the sealant onto the adherend. a mold for molding a sealant having an upper mold and a lower mold that form grooves for injection; a sealant supply mechanism for injecting adhesive sealant into the sealant injection groove; A device that presses and transfers the molded sealing material onto the surface of the adherend by relative movement between the mold and the adherend, and a dam rubber molding device having grooves shaped to follow the desired shape of the dam rubber on the adherend. a dam rubber supply device that inserts the dam rubber into the groove while moving along the groove; a tip holding mechanism that holds the tip of the dam rubber inserted into the groove; It consists of an end-cutting mechanism that cuts the dam rubber from the remaining part when finished, and a device that presses and transfers the dam rubber inserted into the groove onto the object by relative movement between the dam rubber molding table and the object. It is something.

〔Example〕

The present invention will be further described below with reference to embodiments shown in the accompanying drawings.

FIG. 1 is a side view of the apparatus used for carrying out the method of the invention. The apparatus shown in the figure basically includes a sealing material injection molding section 4 that injects and molds the sealing material 1 in the groove between the molds 11 and 12, and a dam rubber molding section 23 that inserts and molds the dam rubber 2 into the groove of a dam rubber molding table 26. Then, the adherend 3 is held by vacuum suction, pressed against the mold 12, the sealing material 1 is attached to the adherend 3, and then pressed against the dam rubber molding table 26, the dam rubber 2 is pressed against the adherend 3.
The transfer portion 17 is attached to the surface of the transfer portion 17.

Next, each of the above-mentioned constituent parts will be explained in sequence.

<Molding of sealing material> First, in the sealing material injection molding section 4, the upper mold (receiving mold) 11 is inserted into the upper frame 9 through the upper spacer 10.
The lower mold (molding mold) 12 is attached to the lower spacer 12', and the lower mold 12 is pressurized and tightly attached to the lower frame 15 via the pressure plate 13 with the screwdriver 14, and then the sealing material 1 is attached. is supplied from the hose 5 using a pressurized supply means such as an extruder or a pump (not shown), and then the switching valve 6 is opened in the cylinder 7 to supply the upper mold 11 and the lower mold via the distribution hose 8. 12 (described later) is filled. After filling is completed, the switching valve 6 is closed and the lower mold 12 is lowered, thereby releasing the upper mold 11 and drawing out the lower mold 12 holding the sealing material 1 to the transfer section 17 by the rollers 16.

<Preparation of the adherend> In the dam rubber molding section 23, the adherend 3 is first placed on the dam rubber molding table 26, and the dam rubber molding table 26 moves to the transfer section 17, and the suction tool 19, such as a vacuum pad, is pushed down by the cylinder 20. The adherend 3 is held by suction and raised by the cylinder 20 to wait at the upper part of the apparatus.

<Molding of dam rubber> The dam rubber molding table 26 is the dam rubber molding section 23
When returning to , the dam rubber molding table 26 is lifted up by the cylinder 28 via the lifting plate 27. Next, the dam rubber supply device 25 inserts the dam rubber 2 into a groove provided around the dam rubber molding table 26 along the profile plate 24, makes one revolution, and cuts the end. Next, the dam rubber molding table 26 is lowered by the cylinder 28 and can be moved to the transfer section 7 by the rollers 16.

<Compression/Transfer of sealing material> When the lower mold 12 holding the sealing material 1 from the sealing material injection molding section 4 comes to the position of the transfer section 17, the adherend 3 held in the sorption device 19 is moved by the cylinder 20. When the sealing material 1 is pushed down and the adherend is pressed against the lower mold 12 by the pressure ring 18, the sealing material 1 adheres to the adherend 3. This pressure ring is formed into a ring shape that follows the shape of the sealing material injection molding part 4, and an elastic body is attached to the tip so that the force applied when pressing the glass surface is uniform. Next, when the demolding part 21 is raised by the cylinder 22, the sealing material 1 attached to the surface of the adherend 3 is removed from the lower mold 12, and the adherend 3 held by the suction tool 19 is moved again by the cylinder 20. and rise. The lower mold 12 returns to the sealant injection molding section 4 .

<Crimping/transfer of dam rubber> In the dam rubber molding part 23, the dam rubber 2
The dam rubber molding table 26 loaded with the rubber molding table 26 moves to the transfer section 17. The suction tool 19 holding the adherend 3 is lowered by the cylinder 20 again, and the crimping ring 18
After pressing the adherend 3 onto the dam rubber molding table 26 through the
Release the vacuum suction of the suction tool 19 and remove the adherend 3,
The suction tool 19 and the pressure ring 18 are connected to the cylinder 20
It rises and returns to its original position. On the other hand, the dam rubber molding table 26 returns to the dam rubber molding section 23 together with the adherend 3 to which the sealing material 1 and the dam rubber 2 are attached. The deposit 3 is taken out by hand or machine hand. A new deposit is then applied and the next cycle is repeated.

FIG. 2 is an explanatory diagram of the procedure for attaching the dam rubber and the sealing material to the adherend. Although this procedure has been explained with reference to FIG. 1, it will be further explained.
The illustration shows the sealing material injection molding part 4, the transfer part 17, and the dam rubber molding part 23, respectively.
~ indicates a step of operation.

First, in step 1, when the adherend 3 is placed on the dam rubber molding table 26 and the process starts, the dam rubber molding table moves and the lower mold 12 rises and engages with the upper mold 11. In step, the adherend 3 is adsorbed by the suction tool 19, the dam rubber molding table 26 returns to the original position, and the sealing material 1 starts to be injected from the injection port 29. In the step, injection of sealing material continues, and then the dam rubber molding table 2
The dam rubber supply device 25 is inserted into the groove 6 of the dam rubber 2.
Start supplying. In step c, the lower mold 12 is lowered and moved, and molding of the dam rubber continues in step c. In step b, the sealing material 1 is attached to the adherend 3, and the lower mold 12 is returned to step b. The dam rubber 2 is molded into a ring shape on the dam rubber molding table 26, and then the dam rubber molding table 2 is molded into a ring shape.
6 moves to. In this step, the dam rubber 2 is attached to the adherend 3 to which the sealant 1 has already been attached. At the step, the dam rubber molding table 26
holds the adherend 3 to which the sealing material 1 and dam rubber 2 are attached and returns to .

Note that, although the above steps are preferable for implementing the present invention, the present invention is not necessarily limited thereto, and it is also possible to reverse the steps.

FIG. 3 is an enlarged partial sectional view of the sealing material injection portion. The sealing material 1 is supplied under pressure to the injection port 29, and is applied to the mold 11 and packing 30 above the tip.
and is injected into the groove sealed by the lower mold 12 and packing 31. These packing 30,3
1 is made of a releasable material. The formation of the upper mold 11 and the lower mold 12 and the shapes of their opposing surfaces are made to approximately follow the shape of the adherend 3. Each mold 11, 12 is attached to an upper spacer 10 and a lower spacer 12'.

FIG. 4 is an explanatory diagram of the process of molding the sealing material and adhering it to the adherend 3, and depicts the explanation of FIG. 2 in more detail. In FIG. 4a, the lower mold 12 is raised, pressure is applied to the upper mold 12, a V-shaped groove space is formed by the upper packing 30 and the lower packing 31, and the periphery is completely sealed by both packings 30 and 31. Become. At step b, the groove is filled with the sealing material 1, and at step c, the lower mold 12 is lowered. The sealing material 1 is released from the upper mold 11 due to the shape of the grooves and the difference in surface area, and is held in the lower mold 12. In step d, the adherend 3 held by the suction tool 19 is pressed with the pressure ring 18 and elastic body 18' to fix the sealing material to the adherend 3, and in e, the adherend 3 is pushed up with the demolding pad 21 and elastic body 21'. The sealing material 1 adheres to the adherend 3.

There are no particular limitations on the sealing material used, but it has plasticity and adhesiveness, and butyl rubber is a typical material. Packing 30 and 3
1 is required to have good elasticity and strength as a packing, as well as good mold releasability. Generally, silicone rubber or a general rubber elastic body that has been subjected to mold release treatment is used.

FIG. 5 is an enlarged view of the main parts of the dam rubber molded part 23. Broadly divided into dam rubber supply device 2
5 and a tracing board 24 for making the movement of this into a predetermined shape.
(driving means for movement is not shown) and a dam rubber molding table 26.

The material of the dam rubber 2 usually has a cross section of T, L, or J.
It is a vulcanized rubber molded into a shape, and one surface of its flat top (adhering surface) is coated with adhesive in advance, and after being coated with release paper to prevent adhesion, it is supplied in boxes or rolls. As the adhesive, a tacky adhesive is usually used.

In the dumb rubber supply device 25, a pressure roll 32 having an elastic surface and a dumb rubber guide 33 are integrally attached to a lifting table 34, and the lifting table 34 is attached to a seat 37 by a link plate 35 and a pin 36 so as to be freely raised and lowered. , driven by the cylinder 40.
The seat 37 is connected to a moving base 38 so that the dam rubber 2 can be fed out in any direction from the dam rubber guide 33.
is rotatably attached to the movable base 3 via a pin.
8 is a profile plate 24 by a wheel stand 39 and a wheel 39'.
(The driving means is a chain, belt, etc., but not shown).

The dumb rubber 2 is pulled out from the box or roll,
It is inserted from above the dam rubber guide 33 and reaches the pressure roll 32. The release paper 2' is set so as to be taken up by an upper winding body (not shown) via the pressure roll 32 and guide rolls.

A closed loop groove 53 is formed around the dumb rubber molding table 26, and an end cutting mechanism (cutter mechanism) 60 and a tip holding mechanism 61 are provided in the substantially straight portion of the groove 53. The width of the groove 53 is
The dam rubber is made slightly narrower than the rubber thickness of the side part of the dam rubber 2 so that the press-fitted dam rubber does not come out easily. The tip holding mechanism 61 is provided at a portion where the dam rubber 2 is inserted into the groove 53, and the pressing portion 48' of the holder 48 constitutes a part of the groove 53. This holder 48 is rotatably attached to a slide base 47 with a pin 52, and is configured to be opened and closed by a cylinder 50 via a link 49, etc., and is fixed by pressing the tip of the dam rubber with the pressing portion 48'. .

Next, regarding the end cutting mechanism 60, that is, the cutter mechanism, a replaceable blade 42 such as a razor blade is used.
is fixed to the cutter holder 43 with a fixture 43', and this is rotatably attached with a shaft 51.
On the other hand, a groove 53' into which the blade 42 is inserted is provided at a right angle to a part of the groove 53 of the dumb rubber molding table 26. The cutter holder 43 includes a shaft 51, link mechanisms 44, 4
6 and is driven by a cylinder 45, thereby cutting the rear end of the dam rubber.

FIG. 6 shows an end cutting mechanism (cutter mechanism) 60.
FIG. Although the drive unit is not shown,
The cutter holder 43 is rotated by the shaft 51, the blade 42 cuts the dam rubber 2 inserted into the groove 53, and is rotated in the opposite direction to return to its original position.

FIG. 7 is a side view of the tip holding mechanism 61.
The upper surface (slide surface) of the slide base 47 is inclined, and the pin 52 is also inclined. When the holder 48 rotates toward the groove 53 via the link 49,
For example, if the dam rubber 2 protrudes from the groove position, push the dam rubber 2 upwards and position it at a predetermined position, and press the pressing part 48' against the wall on the opposite side of the groove.
and hold. Here, the holder 48
At this time, the projection 33' provided on the dam rubber guide 33 described in FIG. 5 is also pushed up to initialize the dam rubber molded portion 25. The protrusion 3
3' is for guiding the dam rubber 2 having an irregular cross section into the groove 53.

FIG. 8 is an explanatory diagram of the operation of dam rubber molding. As described above, when the dam rubber molding table 26 supplies the adherend 3 to the transfer section 17 and returns, it is set at the position where the dam rubber 2 is inserted by the elevating plate 27 driven by the cylinder 28 shown in FIG. Ru. First, with the holder 48 and cutter holder 43 open, the lifting table 34 is pushed down by the cylinder 40, and the tip of the dam rubber is placed at the insertion start position of the dam rubber molding table 26 as shown in the figure.
The pressure roll 32, the dam rubber guide 33 and its protrusion 33' come into contact.

Next, as shown in FIG. 8B, the holder 48 is closed, and the lifting table 34 is pushed up against the force of the cylinder 40 and guided to the groove 53 position, and the tip of the dam rubber 2 is fixed by the pressing part 48'. At this time, the protrusion 33' of the dam rubber guide 33 is also inserted into the groove 53. The dam rubber supply device 25 moves to the right in the figure, goes around the dam rubber molding table,
It returns to the position shown in Figure 8c. At this time, the holder 48 has already been opened, and the protrusion of the dam rubber guide 33 pushes the dam rubber 2 toward the front in the drawing, and returns to its original position as shown in FIG. 8d.

Next, the cutter holder 42 is rotated by the shaft 52 as shown in e, and the blade 42 cuts the dam rubber 2. Next, the lifting table 34, the pressure roll 32, and the dam rubber guide 33 are lifted up together by the cylinder 40. FIG. 8f shows the final step of molding, in which the holder 48 is closed and the tip of the dam rubber 2 is returned to the groove position.

In this way, the dam rubber 2 can be molded into a predetermined shape with the adhesive surface facing upward in the groove 53 provided in the dam rubber molding table 26.

FIG. 9 is an explanatory diagram of the process from dam rubber molding to adhesion. In the dam rubber molding section 23, as described in FIG. 8, the dam rubber 2 is press-fitted into the circumferential groove of the dam rubber molding table 26 as shown in c through the steps a and b in FIG. The upper part of the figure is the surface to which the adhesive is applied. When the dumb rubber molding table 26 moves to the transfer section 17, the adherend 3 to which the sealant 1 has already been applied is held by the suction tool 19 and lowered, as shown in FIG. 9d, and the pressure ring 18 and the elastic body 18' The dam rubber 2 is pressed against the dam rubber molding table 26 and attached to a predetermined position on the side of the sealing material 1. Reference character e shows the state where the dam rubber molding table 26 has returned to the dam rubber molding section 23 and the adherend 3 has been taken out.The drawing is omitted because the taking out is done manually or with a machine hand.

〔Effect of the invention〕

As explained above, according to the present invention, a dam rubber made of vulcanized rubber and having an adhesive coated surface is inserted into a groove of a molding table, and after molding, it is crimped and bonded to an adherend.
By transferring, it is possible to automatically and efficiently fix the adherend in a predetermined position, and by using a mold, it is possible to obtain an extremely stable and good adherend shape and precision, which improves sealing performance and appearance. It becomes possible to improve or save labor. Furthermore, the present invention is extremely advantageous in that it is possible to automatically apply a sealing material, which itself has adhesive properties, simultaneously with the dam rubber in a series of operations by injection molding into a mold.

[Brief explanation of the drawing]

FIG. 1 is an overall explanatory diagram of the applicator according to the present invention;
FIG. 2 is an explanatory diagram of the application method according to the present invention, FIG. 3 is an enlarged partial sectional view of the sealing material injection part, and FIG.
e is an explanatory view showing the sealing material application process, FIG. 5 is an enlarged view of the main part of the dam rubber molding part, FIG. 6 is a partial side view of the end cutting mechanism, FIG. 7 is a partial side view of the tip holding mechanism, and FIG. 8a to 8f are explanatory diagrams of the dam rubber molding operation, 9a to 9e are explanatory diagrams showing the process from dam rubber molding to application, FIG. 10 is a perspective view of the adherend to which dam rubber and sealing material have been applied, 11th
The figure is a sectional view thereof. DESCRIPTION OF SYMBOLS 1... Seal material, 2... Dam rubber, 3... Adherent, 4... Seal material injection molding part, 11... Upper mold, 12... Lower mold, 17... Transfer part,
23...Dam rubber molding section, 25...Dam rubber supply device, 26...Dam rubber molding table, 42...
Blade, 48... Holder, 60... End cutting mechanism,
61...Tip holding mechanism.

Claims (1)

[Scope of Claims] 1. An adhesive sealant is injected into a sealant injection molding groove of a sealant injection mold having a shape that follows the desired shape of the sealant to be adhered to the adherend,
This sealing material is pressed and transferred onto the surface of the adherend, and the vulcanized dam rubber is placed into the groove of a dam rubber molding table whose shape follows the desired shape of the dam rubber to the adherend. A method for applying dam rubber and sealing material to an adherend, which comprises sequentially inserting the dam rubber from the tip side so that the adhesive-coated surface faces outward, and pressing and transferring the dam rubber onto the surface of the adherend. 2. A sealing material molding mold having an upper mold and a lower mold that cooperate with each other to form a sealing material injection groove shaped like the desired shape of the sealing material on the adherend; A sealing material supply mechanism that injects an adhesive sealant into the sealing material injection groove, and a molded sealing material injected into the sealing material injection groove onto the surface of the adherend by relative movement between the mold and the adherend. A crimping/transferring device, a dam rubber molding table having a groove shaped to follow the desired shape of the dam rubber to be adhered to the adherend, and a dam rubber supplying device that inserts the dam rubber into the groove while moving along the groove. , a tip holding mechanism that holds the tip of the dam rubber inserted into the groove, an end cutting mechanism that cuts the dam rubber from the remaining part when the dam rubber has been inserted into the groove, A device for applying dam rubber and a sealing material to an adherend, comprising a device that presses and transfers the dam rubber onto the adherend by relative movement between the dam rubber molding table and the adherend.