JPS6169435A - Method of attaching gum rubber and sealing material to material to be attached and apparatus thereof - Google Patents

Abstract

PURPOSE:To efficiently and automatically attach both a gum rubber and sealing material to a material to be attached by a method wherein adhesive sealing material is cast in a sealing material cast molding groove and the gum rubber consisting of vulcanized rubber is inserted successively into the groove of a forming stand so as to be fixed by pressure and transferred onto the surface of the material to be attached. CONSTITUTION:Firstly, sealing material 1 is filled in a groove between an upper mold and a lower mold 12. Secondly, when the lower mold 12 descends, the sealing material 1 is separat ed from the upper mold and held in the lower mold 12. The sealing material 1 is fixed to a material to be attached 3 by pushing down the material to be attached, which is held with a sucker 19, through a pressure ring 18 and an elastic body 18' thereby attaching to the material to be attached 3 and by pushing up the material to be attached 3 with a demolding pad 21 and an elastic body 21'. The stock of a gum rubber 2 is a vulcanized rubber molded in J-shape with a flat top, on which bonding agent is applied in advance, and pressed in the peripheral edge groove of the gum rubber forming stand 26. When the gum rubber forming stand 26 is shifted to a transferring section, the material to be attached 3 is lowered so as to be pressed to the gum rubber forming stand 26 with the pressure ring 18 and the elastic body 18' in order to attach the gum rubber 2 at the predetermined position aside the sealing material to the material to be attached.

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. It is usually attached with adhesive along a sealant that has been applied to glass in advance, and the glass is sealed as described above. It works to dam the sealant that is pushed out during pressure contact.

FIG. 10 is a perspective view illustrating the glass to which the sealing material and the dam rubber have been applied, and the sealing material 1 and the dam rubber 2 are applied to the periphery of the glass 1 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 has been carried out either by applying only a sealant alone or by using a sealant and dumb rubber in combination; however, because the sealant has adhesive properties, In reality, most of the work to apply it to a location was done by hand, or mechanically by copying. However, with these conventional methods, work efficiency is extremely low, and it is difficult to form 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, and it is difficult to insert it into a mold to shape it in advance. It is difficult to mechanize in a different sense,
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, such a technology does not exist at all, and such a 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 accuracy.

[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 the injection molding of the sealant into 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 pressed and transferred onto the surface of the adherend, and at the same time, the dumb rubber made of vulcanized rubber is molded into the desired shape of the dumb rubber on the adherend. The dam rubber is sequentially inserted into the groove of a dam rubber molding table having a patterned shape starting from the tip so that the adhesive coated surface faces the outside, and the dam rubber is crimped and transferred onto the surface of the adherend. That is.

Further, the apparatus of the present invention used in the method of applying the above-mentioned dam rubber and sealing material to an adherend cooperates with each other to
A mold for molding a sealant having an upper mold and a lower mold forming a groove for injecting the sealant in a shape that follows the desired shape of the sealant to be adhered to the adherend; a sealing material supply mechanism for injecting the sealing material;
The molded sealing material injected into the sealing material injection groove is pressed and bonded to the surface of the adherend by the relative movement between the mold and the adherend.
a dam rubber molding table having a groove shaped like a desired shape of the dam rubber to be applied to 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, an end cutting mechanism that cuts the dam rubber from the remaining part when the dam rubber has been inserted into the groove, and the dam rubber inserted into the groove. and a device that presses and transfers the rubber onto the adherend by relative movement between the dumb rubber molding table and the adherend.

〔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 device shown in the figure basically consists of a mold 11
．． A sealing material injection molding section 4 that injects and molds the sealing material 1 in the groove between 12 and 12, a dam rubber molding section 23 that inserts the dam rubber 2 into the groove of the dam rubber molding table 26 and molds it into a large size, and holds the adherend 3 by vacuum suction. and press it against the mold 12 to adhere the sealing material 1 to the adherend 3,
Next, press the dam rubber 2 onto the dam rubber molding table 26.
It is composed of a transfer section 17 that attaches the image to the surface of the adherend 3.

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

<Molding of sealing material> First, in the sealing material molding section 4, the upper mold 1' (receiving mold) 1
1 to the upper frame 9 via the upper spacer 10, a lower mold (molding mold) 12 to the lower spacer 12', and the lower mold 12 to the lower frame 15 via the pressure plate 13 using screws 14. After pressurizing and adhering, the sealing material 1 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 by the cylinder 7, and the distribution hose is 8, the groove portion (
(described later). After filling is completed, by closing the switching valve 6 and lowering the lower mold 12, the upper mold 11 is released and the lower mold 12 holding the sealing material 1 is moved to the roller 16.
to pull it out to the transfer section 17.

Preparation of the adherend> In the dam rubber molding section 23, first the dam rubber molding table 26 is
When the adherend 3 is first placed on the holder, the dam rubber molding table 26 moves to the transfer section 17, and the suction tool 9, such as a vacuum pad, is pushed down by the cylinder 20 to suction and hold the adherend 3.
It is raised by the cylinder 20 and waits at the top of the device.

Molding of Dam Rubber> When the dam rubber molding table 26 returns to the dam rubber molding section 23, 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 contoured slope 24, goes around it once, and cuts the end. Then,
The dam rubber molding table 26 is lowered by the cylinder 28 and can be moved to the transfer section 17 by the rollers 16.

<Compression bonding/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 by the adsorption tool 19 is pressed by the cylinder 20. When pressed down and the adherend is pressed against the lower mold 12 by the pressure bonding ring 18, the sealing material 1 adheres to the adherend 3. This pressure ring is formed into a ring shape following 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 pad 21 is raised by the cylinder 22, the sealing material 1 attached to the surface of the adherend 3 is separated from the lower mold 12, and the adherend 3 held by the suction tool 19 is raised again by the cylinder 20. do. The lower mold 12 returns to the sealant injection molding section 4 .

Pressing/Transfer of Dumb Rubber> In the dam rubber molding section 23, the dam rubber molding table 26 loaded with the dam rubber 2 is moved to the copying section 17. The suction tool 19 holding the adherend 3 is lowered by the cylinder 20 again, and presses the adherend 3 onto the dam rubber molding table 26 via the pressure ring 18. After fixing the dam rubber 2 to the adherend 3, the suction tool 19 The vacuum suction is released and the adherend 3 is removed, and the suction tool 19 and the pressure ring 18 are attached to the cylinder 2.
0 causes it to rise and return 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. In the figure, ■ indicates the sealing material injection molding section 4, ■ indicates the transfer section 17, ■ indicates the dam rubber molding section 23, and ■ to ■ indicate the steps of the operation.

First, in step ■, the adherend 3 is placed on the dam rubber molding table 26 at O to start, the dam rubber molding table moves to ■, and in ■, the lower molds 1, 2 are placed.
rises and engages in the upper mode 11. In step 2, the adherend 3 is attracted to the suction tool 19, and the dam rubber molding table 2
6 returns to ■, and in [Yes], the sealing material 1 starts to be injected from the injection port 29. In step (2), injection of the sealing material continues, and in (2), the dam rubber supply device 25 starts to supply the dam rubber 2 to the groove of the dam rubber molding table 26. Step■
Then, at ■, the lower mold 12 is lowered and moved to ■, and at C, the molding of the dam rubber continues. In step (2), the sealing material 1 is attached to the adherend 3 in step (b), and the lower mold 12 returns to step (2). The dam rubber 2 is molded into a ring shape on the dam rubber molding table 26 at O, and then the dam rubber molding table 26 moves to 3.

In step ■, adherend 3 to which sealant 1 has already adhered is
Dam rubber 2 is attached to. In step (2), the dam rubber molding table 26 holds the adherend 3 to which the sealing material 1 and the dam rubber 2 are attached, and the process returns to (2).

Incidentally, although steps (1) to (2) above are preferable for implementing the present invention, the present invention is not necessarily limited thereto, and (1) and (2) may also be reversed.

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 injected into the groove sealed by the upper mold 11 and the backing 30 and the lower mold 12 and the backing 31 from the tip. These banks 30.31 are made of a releasable material.

The shapes 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 has an upper spacer 10 and a lower spacer 1.
2' is attached.

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. 4(a), the lower mold 12 rises, pressurizes the upper mold 12, the upper puff king 30 and the lower backing 31 form a V-shaped groove space, and the periphery is completely sealed by both puff kings 30 and 31. state.

In (b), the groove is filled with the sealing material 1, and in (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 (d), the adherend 3 held by the suction tool 19 is pressed with the pressure ring 18 and the elastic body 18' to fix the sealing material to the adherend 3, and in (e) the adherend is covered with the demolding pad 21 and the elastic body 21'. When the kimono 3 is pushed up, the sealing material 1 adheres to the garment 3.

There are no particular limitations on the sealing material used, but it has plasticity and adhesiveness, and butyl rubber is a typical material. The backings 30 and 31 are required to have good elasticity and strength 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 speaking, it consists of a dam rubber supply device 25, a profiling plate 24 for making the movement of the device into a predetermined shape (driving means for movement is not shown), and a dam rubber molding table 26.

The material of Dam Rubber 2 has a T and L cross section.

A J-shaped vulcanized rubber whose flat top surface (adhering surface) is coated with adhesive in advance, and is supplied as a box or roll after being coated with adhesive to prevent adhesion with release paper, etc. . As the adhesive, a tacky adhesive is usually used.

The dam rubber supply device 25 includes a press roll 32 having an elastic surface and a dam rubber guide 33 that are integrally mounted on a lifting platform 34.
The lifting platform 34 is attached to a link plate 35 and a bin 36.
The cylinder 4 is attached to the seat 37 so as to be able to rise and fall freely.
Driven at 0. The seat 37 is rotatably attached to the movable base 38 via a bottle so that the dam rubber 2 can be fed out in any direction from the dam rubber guide 33.
8 is adapted to move along a rail 41 attached around the tracing board 24 by means of a wheel stand 39 and a wheel 39' (the driving means is a chino, a belt, etc., but not shown). pulled out from a box or one item, 7
Insert the top of the Darabar guide 33 4
Pressure welding.

- Reach rule 32. The mold release IE2' is the pressure roll 3
2 and the upper part of the body (not shown) via guide rolls, etc.
It will be set so that it can be picked up at

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 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 453, and the pressing portion 48' of the holder 48 constitutes a part of the groove 53. This holder 48 has pins 5 on the slide base 47.
2, and is configured to be opened and closed by a cylinder 50 via a link 49, etc., and the pressing portion 48'
Press down on the tip of the dam rubber to fix it.

Next, regarding the end cutting mechanism 60, that is, the cutter mechanism, a replaceable blade 42 such as a razor blade is fixed to the cutter holder 43 with a fixture 43', and this is attached to the shaft 5
Install it so that it can rotate freely. On the other hand, a groove 53' into which the blade 42 is inserted is provided at a right angle in a part of the groove 53 of the dumb rubber molding table 26. The cutter holder 43 includes a shaft 51 and a link mechanism 44.
．． It is driven by a cylinder 45 via a cylinder 46, thereby cutting the rear end of the dam rubber.

FIG. 6 is a side view of the end cutting mechanism (cutter mechanism) 60. 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 the cutter holder 43 is rotated in the opposite direction to return to the original position.

FIG. 7 is a side view of the tip holding mechanism 61.

The top surface (slide surface) of the slide base 47 is inclined,
The pin 52 is also inclined. When the holder 48 rotates into the groove 53 via the link 49, for example, the dam rubber 2
If the dam rubber 2 protrudes from the groove position, push the dam rubber 2 upward and position it at the specified location, and move it to the opposite side of the groove (II
It is held by the positive wall and the pressing portion 48'. here,
The holder 48 is the dam rubber guide 33 described in FIG.
The initial positioning of the dam rubber molded portion 25 is also performed by pushing up the protrusion 33' provided on the dam rubber molded portion 25. The protrusion 33' is
This 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, the dam rubber molding table 26 places the adherend 3 on the transfer section 17.
When the cylinder 2 shown in FIG.
The dam rubber 2 is set in a position where the dam rubber 2 is inserted into the elevating plate 27 driven by the lever 8. First, with the holder 48 and the cutter holder 43 open, the lifting table 34 is pushed down by the cylinder 40, and the tip of the dam rubber, the pressure roll 32, and the dam rubber guide 33 are placed at the insertion start position of the dam rubber molding table 26 as shown in the figure. and its protrusion 33' hits.

Next, the holder 48 is closed as shown in FIG. 8(b), 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 f153. The dam rubber supply device 25 moves to the right in the figure, goes around the dam rubber molding table, and returns to the position shown in FIG. 8(c). 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. 8(d).

Next, as shown in (e), the cutter holder 42 is rotated by the shaft 52, 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. Figure 8 (
f) is 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 on the i53 provided on the dam rubber molding table 26.

- Fig. 9 is an explanatory diagram of "Darapa one molding and adhesion". In the dam rubber molding section 23, as described in FIG. 8, the dam rubber 2 is press-fitted into the peripheral groove of the dam rubber molding table 26 as shown in (C) through the steps <a> and (b) in FIG.

The upper part shown is the surface that received the adhesive. 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. 9(d), and the crimping 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. (e)
2 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 by machine hands.

〔Effect of the invention〕

As explained above, according to the present invention, the dam rubber, which is made of vulcanized rubber and serves as the adhesive application surface, is inserted into the groove of the molding table and after molding is pressed and transferred to the adherend, thereby automatically increasing efficiency. It can be firmly fixed to the specified position of the adherend, and by using a mold, it is possible to obtain an extremely stable and good adherend shape and precision, making it possible to improve sealing performance and appearance, and save labor. becomes. 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 application device 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 sealant injection part, and FIGS. ) is an explanatory diagram 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
The figure is a partial side view of the tip holding mechanism, Figures 8(a) to (f)
is an explanatory diagram of the dam rubber molding operation, and Figures 9(a) to ('e
) is an explanatory view showing the process from molding to applying the dam rubber, FIG. 10 is a perspective view of the adherend to which the dam rubber and sealing material have been applied, and FIG. 11 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 (2)

[Claims] (1) Inject an adhesive sealant into the sealant injection molding groove of a sealant injection mold whose shape follows the desired shape of the sealant on the adherend, and apply this sealant to the adherend. At the same time, the dam rubber made of vulcanized rubber is placed in the groove of a dam rubber molding table having a shape that follows the desired shape of the dam rubber on the adherend.
A method for applying dam rubber and sealing material to an adherend, characterized by inserting the dam rubber one after another from the tip so that the adhesive-applied surface faces the outside, 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 sealing material supplying mechanism that injects an adhesive sealant into the sealing material injection groove and molding the sealant into the adherend by relative movement between the mold and the adherend. a dam rubber molding table having a groove shaped like the desired shape of the dam rubber to be adhered to the adherend; and a dam rubber molding table that inserts the dam rubber into the groove while moving along the groove. a supply device; a tip holding mechanism for holding the tip of the dam rubber inserted into the groove; an end cutting mechanism for cutting the dam rubber from the remaining portion 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 inserted into the adherend onto the adherend by relative movement between the dam rubber molding table and the adherend.