JP3670497B2 - Adhesive applicator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adhesive application device for an annular member.
[0002]
[Prior art]
Conventionally, when an adhesive is applied to an annular member having a hole, the annular member is placed in a basket and the annular member is immersed in the adhesive tank containing the adhesive (so-called “dobbling”). The basket is pulled up to remove excess adhesive from the annular member.
[0003]
[Problems to be solved by the invention]
However, the above method has caused the following problems.
(1) A time loss for draining liquid occurs.
(2) A uniform and extremely thin adhesive film is ideal, but a large amount of adhesive is applied by bumping, resulting in non-uniform adhesive film and an increased film pressure. In addition, there is a lot of waste of the adhesive.
{Circle around (3)} Depending on the shape of the annular member (for example, the shape having a recessed portion), the adhesive is dried while it is accumulated, resulting in a defective product.
(4) When there is dirt such as sludge in the adhesive tank, the dirt adheres to the surface of the annular member, and the adhesive is dried as it is.
(5) The adhesive film is distorted at the contact portions between the annular members or between the annular member and the basket, which causes poor adhesion.
{Circle around (6)} Since the entire basket is immersed in the adhesive tank, post-treatment of the basket (removal of the adhesive) is necessary, which is troublesome.
(7) A large scale is required by a device for raising and lowering the basket.
[0004]
Therefore, an object of the present invention is to provide an adhesive application device that solves the above-described problems, improves work efficiency, and can finish with high quality.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, an adhesive application device according to the present invention is an apparatus for applying an adhesive to an annular member having a hole at the center, and is inserted into the hole to form a plurality of the above-mentioned objects. A shaft member having a shaft main body for mutually suspending the annular members at a predetermined axial center , an adhesive tank containing an adhesive, and transporting the shaft member while rotatably supporting the shaft member. Conveying means for bringing the shaft member close to the adhesive liquid level and immersing the lower part of the annular member in the adhesive; and rotating the shaft member approaching the adhesive liquid level by the conveying means. Forcibly rotating means for rotating the annular member suspended by the shaft member, and each of a plurality of mounting concave circumferential grooves formed at predetermined intervals on the shaft main body has a ring-like shape. A non-slip member is externally fitted, and the outer peripheral surface of the non-slip member contacts the annular member. It was configured to equity.
[0006]
Also, a holding concave circumferential groove for holding the annular member is formed by the inner side surface of the mounting concave circumferential groove of the shaft body and the outer circumferential surface of the non-slip member.
Further, the transporting means includes two endless chains arranged in parallel when viewed in plan, and a receiver that is arranged on the chain at a predetermined pitch and removably supports both ends of the shaft member. I have.
[0007]
The forced rotation means includes a pinion gear provided on one end side of the shaft member, and a rack member provided at a height position close to the adhesive liquid surface of the adhesive tank and meshing with the pinion gear. .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
[0009]
1 and 2 show an embodiment of an adhesive application device according to the present invention, which is an apparatus for applying an adhesive to an annular member 1 having a hole 1a in the center. , A horizontal shaft member 2 that is inserted through the hole 1a and suspends the annular member 1, an upper-opening adhesive tank 3 that contains the adhesive 6, and a shaft member 2 that is rotatably supported Then, a conveying means 4 for bringing the shaft member 2 close to the adhesive liquid surface 6 a of the adhesive tank 3 and immersing the lower part of the annular member 1 into the adhesive 6 is provided. The material of the annular member 1 is, for example, metal or ceramic.
[0010]
Here, as shown in FIGS. 5 and 7, the annular member 1, which has a predetermined inner diameter phi ₁ of the hole 1a in the center, the portion of the hole portion 1a is in a disc shape which is a recess 1b .
[0011]
Thus, the adhesive application device of the present invention will be described in detail. As shown in FIGS. 1, 2, 8, and 9, the conveying means 4 includes a rectangular parallelepiped upper opening base portion 12, The left and right endless chains 8, 8 disposed in parallel in the plan view in the recess 13 of the base portion 12, and the left and right ends of the shaft member 2 are disposed in the respective chains 8, 8 at a predetermined pitch. A plurality of U-shaped receptacles 9 that removably support the vicinity of both ends, and the left and right chains 8, 8 are a plurality of sprockets 14 attached to the left and right side walls 12a, 12a of the base portion 12, respectively. Suspended by…
[0012]
Further, as shown in FIGS. 3 and 9, a notch 16 is provided at the upper end edge 15, 15 of the left and right side walls 12 a, 12 a of the base part 12 on the upstream side U slightly from the middle part. The notch 16 includes a first slope surface portion 17 inclined downward from the upstream U to the downstream side D, a horizontal surface portion 18, and a second slope surface portion inclined upward from the upstream U to the downstream D. 19 Further, guide protrusions 20 and 20 for guiding the chains 8 and 8 are provided along the upper end edges 15 and 15 of the left and right side walls 12a and 12a including the notches 16 and 16, respectively.
[0013]
Then, the upper side of the endless chain 8 suspended on the sprockets 14 is slidably mounted on the guide ridges 20, and the sprocket 14 is rotated by a drive motor (not shown), The upper side of the chain 8 is configured to slide from the upstream side U to the downstream side D along the guide protrusions 20. The left and right chains 8 and 8 are moved at the same speed by a synchronization mechanism or the like.
[0014]
As shown in FIGS. 1 to 3, the adhesive tank 3 is disposed in the recess 13 of the base 12 and at a position corresponding to the notch 16, and accommodates the adhesive 6. doing.
[0015]
As shown in FIGS. 4, 5, 7, and 9, the shaft member 2 includes a plurality of concave circumferential grooves 7 that hold a plurality of annular members 1 at predetermined intervals. Yes. More specifically, the shaft member 2 has supported portions 24 and 24 supported by the receiving devices 9 and 9 of the transport means 4 on the one end 2a side and the other end 2b side. , 24 and a ring main body 23 having a plurality of mounting concave circumferential grooves 25 formed at predetermined intervals between the shaft centers and ring mounting outer fittings in the mounting concave circumferential grooves 25 of the shaft main body 23, respectively. Non-slip members 26 are provided. That is, as shown in FIG. 6, to attach the anti-slip member 26 to the mounting concave peripheral groove 25 of the shaft body 23, the outer peripheral surface 27 and the inner side surface 28 of the mounting concave peripheral groove 25 of the anti-slip member 26 Thus, the concave circumferential groove 7 of the shaft member 2 is formed. The anti-slip member 26 is manufactured by cutting a silicone rubber shrink tube, for example .
[0016]
Further, as shown in FIG. 4, the supported portion 24 on the one end 2a side of the shaft body 23 is provided with a pair of outer flange portions 29, 29 at predetermined intervals, and in the vicinity of the outer flange portion 29 on the one end 2a side. Is provided with a pinion gear 10 (for forced rotation means 5 described later).
[0017]
Thus, the adhesive application device of the present invention, as shown in FIGS. 1, 8, and 9, moves the shaft member 2 approaching the liquid surface 6 a of the adhesive 6 by the conveying means 4 (as indicated by an arrow A). Forced rotating means 5 is provided for rotating the annular members 1... Suspended around the shaft member 2 (as indicated by the arrow B).
[0018]
That is, the forcible rotating means 5 includes the pinion gear 10 provided on the one end 2a side of the shaft member 2, the height position close to the liquid surface 6a of the adhesive 6 in the adhesive tank 3, the front position thereof, and the downstream side thereof. And a rack member 11 that is provided over a position where D is completely dried and meshes with the pinion gear 10. More specifically, the rack member 11 is attached to one of the left and right side walls 12a, 12a of the base portion 12 and the horizontal surface portion 18 of the notch portion 16.
[0019]
Further, on the downstream side D of the adhesive tank 3, a liquid cutting fan 21 that sends cold air to the annular member 1 coated with the adhesive 6 and a drying fan 22 that sends low-temperature air are provided. The adhesive applicator configured as described above has an annular member supply zone for supplying the annular member 1 on the upstream side U from the adhesive vessel 3 by means of automatic carry-in means or by hand (not shown). The downstream side D from 3 is an adhesive drying zone.
[0020]
Next, the operation of the adhesive application device of the present invention will be described. As shown in FIG. 1 and FIG. 2, in the application work of the adhesive 6, first, the left and right chains 8, 8 of the transport means 4 are set to a low speed—the transport speed is, for example, 100 mm / min— The shaft member 2 that has been driven by and having the annular member 1 held in advance in each of the concave grooves 7 is sequentially placed on the left and right support members 9 and 9 (automatic loading means or manually). ) Install. At this time, the shaft member 2 is installed on the receiving fixtures 9 and 9 with the pinion gear 10 facing the rack member 11 side. As shown in FIG. 5, when the annular member 1 is held in the concave circumferential groove 7 of the shaft member 2, the shaft member 2 is slightly inclined.
[0021]
1 and 2, the shaft members 2... Supported horizontally by the receivers 9 and 9 are sequentially transported to the downstream side D in the horizontal direction, but the shaft members 2 are fed from the annular member supply zone. … Starts rotating. That is, as shown in FIGS. 8 and 9, the pinion gear 10 is engaged with the rack member 11, and the shaft member 2 starts to rotate (in the direction of arrow A). When the shaft member 2 is transported to the position of the adhesive tank 3, the shaft member 2 descends along the first gradient surface portion 17 of the base portion 12 as shown in FIGS. 1 and 8. The lower surface of the plurality of annular members 1... Suspended from the shaft member 2 is immersed in the adhesive 6.
[0022]
The shaft member 2 further moves along the horizontal plane portion 18. At this time, as shown in FIG. 10, each annular member 1 held in each concave circumferential groove 7 of the shaft member 2 is rotated. It is rotated around at 2 (in the direction of arrow B) and continues to rotate. That is, each annular member 1... Rotates with respect to the shaft member 2 without sliding, and moves to the downstream side D in the horizontal direction.
[0023]
Thus, FIG. 11 shows the portion of the annular member 1 that moves while rotating, the part that goes up from the liquid surface 6a through the adhesive 6 (enlarged sectional view taken along the line CC in FIG. 10). Is shown. By the way, since the annular member 1 rotates at a slow speed, the excess adhesive 6 applied to the portion of the annular member 1 on the side rising from the liquid surface 6a is drawn toward the liquid surface 6a. Accordingly, even if dirt such as sludge is mixed in the adhesive 6, it flows down to the liquid surface 6 a side together with the excess adhesive 6, and the dirt 30 does not adhere to the annular member 1.
[0024]
Further, as shown in FIGS. 6 and 9, since the annular member 1 is held in the concave circumferential groove 7 of the shaft member 2 in an inclined manner, the outer periphery of the hole portion 1 a of the annular member 1 and the concave circumferential groove 7. A gap is formed between the surface 27 and the annular member 1 and the concave groove 7 are not in surface contact. Accordingly, the adhesive 6 applied to the inner peripheral edge of the hole 1a of the annular member 1 becomes difficult to adhere to the outer peripheral surface 27 of the concave groove 7, and a thin and clean adhesive film is formed on the inner peripheral edge of the hole 1a. Moreover, since it hold | maintains in the inclined form, the adhesive agent 6 does not accumulate in the recessed part 1b of the annular member 1. FIG.
[0025]
Thereafter, the pinion gear 10 remains engaged with the rack member 11, the shaft member 2 continues to rotate, and each annular member 1 rotates slowly, as shown in FIGS. 2 rises along the second inclined surface portion 19 and each annular member 1 is pulled up from the adhesive 6 (drying is started). Then, the shaft member 2 that has passed through the second gradient surface portion 19 again moves in the horizontal direction along the upper edge 15 of the base portion 12, and adheres to each annular member 1 with cold air from the liquid draining fan 21. The excess adhesive 6 is drained, and the adhesive 6 is dried by the low-temperature air from the drying fan 22 to form an adhesive film on the surface of the annular member 1. Thus, drying of the adhesive adhesion part of the annular member 1 starts from the moment it comes out of the adhesive tank 3 (while slowly rotating), and the annular member 1 and the concave circumferential groove 7 are not in surface contact. Therefore, the adhesive does not adhere to the outer peripheral surface 27.
[0026]
Then, when the shaft member 2 is conveyed to the downstream side D, the shaft member 2 is removed from the receivers 9 and 9 (by an automatic discharging means or manually), and each annular member 1 with the adhesive film formed thereon is removed. It is extracted from the shaft member 2 and stored in a predetermined place. In this way, the shaft members 2 that suspend the annular members 1 on which the adhesive film is formed are sequentially conveyed to the downstream side D.
[0027]
By the way, as shown in FIG. 7, when the outer diameter of the concave groove 7 of the shaft member 2 is φ ₂ and the inner diameter of the hole 1 a of the annular member 1 is φ ₁ , the annular member with respect to the shaft member 2 is formed. The rotation ratio of 1 is φ ₂ π / φ ₁ π.
[0028]
Therefore, in the present invention, the rotation ratio is constant even when the size of the annular member 1 is different. That is, the larger the inner diameter phi ₁ of the hole 1a of the annular member 1, also larger outer diameter phi ₂ of the concave peripheral groove 7 of the shaft member 2 in proportion thereto. The number of teeth of the pinion gear 10 of the shaft member 2 is constant.
[0029]
Thus, by producing the shaft member 2 having the concave circumferential groove 7 having the outer diameter dimension φ ₂ corresponding to the inner diameter dimension φ ₁ of the hole 1 a of the annular member 1, the conveying speed is kept constant for each shaft member 2. Different types (sizes) of the annular member 1 can be suspended and conveyed, and the adhesive 6 can be applied. In other words, while the pinion gear 10 meshes with the rack member 11 and the shaft member 2 rotates, both the large annular member 1 and the small annular member 1 rotate the same number of times (for example, three times), respectively. It is possible to form an adhesive film having almost the same thin film pressure.
[0030]
12 to 14 show shaft members 2 having different shapes. The shaft member 2 shown in FIGS. 12 and 13 has a non-slip member 26 (similar to that described above) fitted in a mounting concave groove 25 of the shaft body 23. Further, the shaft member 2 shown in FIG. 14 is obtained by omitting the non-slip member, and sand blasts the concave circumferential groove 7 of the shaft member 2 to prevent slip.
[0031]
In addition, this invention is not limited to the above-mentioned embodiment, For example, in this embodiment, although the case where the annular member 1 lower part was immersed in the adhesive agent 6 to the hole 1a was illustrated, In some cases, the vicinity of the outer peripheral edge of the lower part may be immersed. Further, in the present invention, the “adhesive” is defined as including a solvent and a paint. Further, the shaft member 2 is not limited to a horizontal shape, and may be freely inclined (relative to the horizontal). In addition, the adhesive tank 3 has a ceiling wall shape, and a part of the conveying means such as the chain 8 can be carried in and out from the side wall window portion or the ceiling window portion.
[0032]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect described below.
[0033]
A uniform and extremely thin adhesive film can be reliably and easily formed on the annular member 1 (according to claim 1). Further, the time for draining (as in the prior art), the time loss of the post-treatment of the basket on which the annular member 1 is bumped, and the waste of the adhesive are eliminated, and the coating operation can be performed efficiently.
[0034]
Further, since the adhesive member 6 is applied by rotating the annular member 1 while being suspended by the shaft member 2, the adhesive agent 6 does not accumulate in the concave portion 1 b of the annular member 1, and Even if dirt 30 such as sludge is mixed, the dirt 30 is pulled back to the liquid surface 6a side of the adhesive 6 and does not adhere to the surface of the annular member 1, and the number of defective products is greatly reduced.
[0035]
(According to claim 2) One annular member 1 is suspended in one concave circumferential groove 7, and a plurality of annular members 1. Thus, the adhesive 6 can be applied. At this time, since each of the annular members 1 is suspended at a predetermined axial center, the adhesive 6 portions applied to each of the annular members 1 contact each other (as in the prior art) and the adhesive film is distorted. There is no formation. Furthermore, it is also possible to suspend different types of annular members 1 for each shaft member 2 to support small-quantity and multi-product production.
[0036]
(According to claim 3) The structure of the conveying means is simple and easy to manufacture. Further, the shaft member can be easily and quickly attached to and detached from the conveying means.
According to the fourth aspect, the forced rotation means 5 can have a simple structure by using the shaft member 2 itself conveyed.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a simplified configuration showing an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a simplified configuration viewed from the downstream side.
FIG. 3 is an explanatory view showing a base part.
FIG. 4 is a plan view showing a shaft member.
FIG. 5 is a cross-sectional view showing a state in which a plurality of annular members are suspended from a shaft member.
FIG. 6 is an enlarged cross-sectional view showing a contact portion between an annular member and a shaft member.
FIG. 7 is a cross-sectional view showing a state in which an annular member is suspended from a shaft member.
FIG. 8 is an explanatory view showing a state in which a shaft member starts to rotate.
FIG. 9 is an explanatory view showing a state in which an annular member is immersed in an adhesive as viewed from the downstream side.
FIG. 10 is an explanatory view showing a state in which an annular member is immersed in an adhesive.
FIG. 11 is an enlarged cross-sectional view showing a state in which an annular member is immersed in an adhesive.
FIG. 12 is a cross-sectional view of the main part of a shaft member showing another shape of a shaft member.
FIG. 13 is a cross-sectional view of a main part of a shaft showing another shape of a shaft member.
FIG. 14 is a cross-sectional view of a main part of a shaft showing another shape of the shaft member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Toroidal member 1a Hole 2 Shaft member 2a One end 3 Adhesive tank 4 Conveying means 5 Forced rotating means 6 Adhesive 6a Liquid level 7 Concave groove 8 Chain 9 Receiving tool
10 Pinion gear
11 Rack member
23 axis body
25 recessed groove for mounting
26 Non-slip member
27 outer peripheral surface
28 inner surface

Claims (4)

An apparatus for applying an adhesive to an annular member having a hole in the center, the shaft having a shaft body that is inserted through the hole and suspends the plurality of annular members from each other at a predetermined axial center. A member, an adhesive tank containing an adhesive, and the shaft member being rotatably supported while being conveyed, the shaft member being brought close to the adhesive liquid level of the adhesive tank, and the lower part of the annular member being Conveying means for immersing in the adhesive, and forced rotating means for rotating the shaft member approaching the adhesive liquid level by the conveying means and rotating the annular member suspended by the shaft member and, with a,
A ring-shaped non-slip member is fitted on each of the plurality of mounting concave grooves formed at predetermined intervals on the shaft main body, and the outer peripheral surface of the non-slip member holds the annular member in contact with the shaft main body. An adhesive application device characterized by being configured to do so . The adhesive application device according to claim 1 , wherein a holding concave circumferential groove for holding the annular member is formed by an inner surface of the mounting concave circumferential groove of the shaft body and an outer peripheral surface of the non-slip member. .   The conveying means includes two endless chains arranged in parallel in a plan view, and a receiving member arranged on the chain at a predetermined pitch and detachably supporting the vicinity of both ends of the shaft member. The adhesive application device according to claim 1 or 2.   The forced rotation means includes a pinion gear provided on one end side of the shaft member, and a rack member provided at a height position close to the adhesive liquid surface of the adhesive tank and meshing with the pinion gear. The adhesive application device according to 1, 2 or 3.

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