JP5268530B2 - Adhesive application apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive applying apparatus and method by means of which an adhesive can be applied completely on a cylindrical workpiece. <P>SOLUTION: In the adhesive applying apparatus A, using a vertical relative position changing means 41, a vertical relative position between an applying roller 46 and a workpiece W supported on a workpiece holder 13 is positioned at a contact position and the applying roller 46 is rotated, then their vertical relative position is once positioned at a non-contact position by the vertical relative position changing means 41, and then repositioned at the contact position by the same means 41. Concurrently, using an orthogonal-to-axis horizontal relative position changing means, the relative positions thereof in the horizontal direction orthogonal to the axis are made to change and an applying roller 47 is rotated. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an adhesive application apparatus and method.

  Various techniques for applying an adhesive to a cylindrical workpiece have been proposed.

  For example, Patent Document 1 discloses a work conveying means, an adhesive application roller, a drive means for raising and lowering the application roller, and a drive means so that the application roller is positioned at an appropriate vertical position according to the shape of the work. An adhesive application device comprising a stopper means for stopping is disclosed.

  In Patent Document 2, a large gear that rotates at a constant speed by rotating a fixed number of spindles around a rotating disk, fixing a pinion to the spindle, and meshing with the pinion on the center line of the rotating disk. And an adhesive application roller for applying an adhesive in contact with the lower surface of the cylindrical body, which is hung on the spindle at the lower end of the rotating disk, and a cylindrical body in the upper half of the rotating disk. An adhesive application device provided with a hot air drying device for drying the adhesive on the surface is disclosed.

  Patent Document 3 is a method of applying a solution-like adhesive on the outer peripheral surface of a cylindrical or columnar object, using a hard application roll having a spiral ridge on the outer peripheral surface, The outer peripheral surface of the object to be adhered is brought into contact with the outer surface of the object to be adhered, and the adhesive adheres to the outer surface of the application roll while rotating the object to be adhered in response to the rotation of the application roll by friction force. An application process for transferring and applying to the surface, and a setting process for volatilizing a part of the solvent contained in the adhesive while rotating the adherend to which the adhesive is applied about a substantially horizontal axis. Are disclosed.

  Patent Document 4 discloses an adhesive coating apparatus in which an outer peripheral surface of a receiving roller is covered with an elastic body made of silicon rubber or the like to absorb variations in the thickness of an object to be coated.

In Patent Document 5, a concave portion having a desired pattern is provided on the surface of a rotating roll in which the axis of rotation is positioned in the vertical direction, and the concave portion is filled with an adhesive, and the surface of the rotating roll filled with the adhesive. An adhesive coating apparatus is disclosed in which the coating material is brought into contact with the coating material to transfer and apply the adhesive filled in the indented portion of the surface of the rotating roll to the coating material.
Japanese Patent Laid-Open No. 2-125778 Japanese Patent No. 3107902 Japanese Examined Patent Publication No. 6-228 Japanese Patent Laid-Open No. 5-111653 JP-A-10-137650

  An object of this invention is to provide the adhesive agent coating apparatus and method which can apply | coat an adhesive agent to a cylindrical workpiece | work without omission.

The adhesive application device of the present invention is
An adhesive application roller that is provided so that the axial direction is horizontal and is rotatable in the circumferential direction, and configured to be supplied with an adhesive on the outer periphery;
A workpiece support provided so as to support a cylindrical workpiece in an axial direction parallel to the axial direction of the coating roller above the coating roller;
Vertical relative position changing means for changing the relative position in the vertical direction between the application roller and the work supported by the work support portion between a contact position where they contact and a non-contact position where they are not in contact with each other. When,
Axial / vertical / horizontal relative position changing means for changing the relative position of the application roller and the workpiece supported by the workpiece support in the axial / horizontal direction;
By positioning the relative position in the vertical direction between the application roller and the work supported by the work support portion by the vertical direction relative position changing means at the contact position, and rotating the application roller, After an adhesive pool is formed between the workpiece supported by the workpiece support portion and the adhesive is applied to the entire outer periphery of the workpiece, the vertical relative position changing means temporarily changes the relative position in the vertical direction. The vertical position relative to the vertical position and the relative position in the vertical direction is set to the contact position by the vertical relative position change means, and the vertical and horizontal relative position change means is used to change the positions of the axes in the non-contact position. The adhesive on the outer periphery of the application roller is changed by changing the relative position in the right-and-left direction and rotating the application roller. And control means for transferring the entire circumference periphery of the supported workpiece over click support,
Is provided.

  An adhesive application method of the present invention includes an adhesive application roller that is provided so that an axial direction thereof is horizontal, is rotatable in a circumferential direction, and is supplied with an adhesive on an outer periphery thereof, and the application roller By positioning the relative position in the vertical direction with a cylindrical workpiece provided in parallel with the axial direction of the coating roller in the upper position of the coating roller, and rotating the coating roller The adhesive pool is formed between the application roller and the workpiece, and the adhesive is applied to the entire outer periphery of the workpiece. Then, the relative position in the vertical direction is temporarily positioned at the non-contact position, Thereafter, the relative position in the vertical direction is positioned at the contact position, the relative position in the axis-horizontal direction is changed, and the coating roller is rotated to bond the outer periphery of the coating roller. It is allowed to transfer the entire circumference periphery of the workpiece.

  According to the present invention, an adhesive pool is formed between the application roller and the workpiece, and the adhesive is applied to the entire outer periphery of the workpiece, and once they are separated in the vertical direction, the adhesive pool is eliminated. Since the adhesive is applied in two steps, the adhesive on the outer periphery of the application roller is transferred to the entire outer periphery of the workpiece while contacting them again and separating them in the direction perpendicular to the axis. Adhesive can be applied without omission.

  Hereinafter, embodiments will be described in detail based on the drawings.

  FIG. 1 shows an adhesive application device A according to this embodiment. This adhesive application device A is used to apply an adhesive to the outer periphery of a cylindrical workpiece W such as an inner cylinder of an automobile bush.

  The adhesive application device A according to the present embodiment includes a workpiece transport unit 10, a workpiece supply unit 20, a workpiece preheating unit 30, an adhesive application unit 40, a workpiece recovery unit 50, and a control unit 60 (control means).

  Each of the work conveyance units 10 has a configuration in which an endless belt body 12 is wound around a pair of pulleys 11 arranged in a lateral direction so that the axial direction is horizontal.

  One of the pair of pulleys 11 is a driving pulley 11 and the other is a driven pulley 11. A driving motor (not shown) is coupled to the driving pulley 11, and the driving motor is connected to the control unit 60 by wiring. The belt body 12 is provided with a plurality of rod-like workpiece support members 13 (work support portions) protruding horizontally to the side at regular intervals along the length direction. Each work support member 13 is provided with a shaft rotation mechanism (not shown), and the shaft rotation mechanism is connected to the control unit 60 by wiring. As described above, the workpiece transfer unit 10 is configured such that the belt body 12 can travel counterclockwise.

  The workpiece supply unit 20 is provided at the upstream end (right end portion) of the upper portion of the belt body 12 hung between the pair of pulleys 11 in the workpiece transport unit 10.

  The workpiece preheating unit 30 is provided in series so as to cover the belt body 12 on the downstream side of the workpiece supply unit 20 on the upper portion of the belt body 12 hung between the pair of pulleys 11 in the workpiece transport unit 10. A plurality of preheating heaters 31 are used. Each of the plurality of preheating heaters 31 is connected to the control unit 60 by wiring.

  2 and 3 show the adhesive application part 40.

  The adhesive application section 40 includes a primer adhesive application section 40a provided corresponding to the upstream side of the lower portion of the belt body 12 hung between the pair of pulleys 11 in the work transport section 10, and a downstream side thereof. The present adhesive application section 40b is provided.

  Each of the primer adhesive application section 40a and the present adhesive application section 40b has a stage 42 supported by an elevating drive mechanism 41 such as a hydraulic cylinder. The elevating drive mechanism 41 is connected to the control unit 60 by wiring. As described above, the stage is configured to be movable between the standby position at the lower end and the adhesive application position at the upper end.

  On the stage 42, a rail 43 extending along the belt body 12 hung between the pair of pulleys 11 in the workpiece transfer unit 10 is provided, and a movable member 44 is provided on the rail 43 so as to be able to travel. Yes. The movable member 44 is provided with a travel drive mechanism (not shown), and the travel drive mechanism is connected to the control unit 60 by wiring. As described above, the movable member 44 is configured to be able to travel in a range where the rail 43 on the stage 42 is provided.

  An adhesive tank 45 is provided on the movable member 44, and an application roller 46 is provided so that the lower part is hidden in the adhesive tank 45. The application roller 46 has a roller shaft supported by roller support members 47 provided on both sides of the adhesive tank 45, so that the axial direction is horizontal and parallel to the workpiece support member 13. ing. The roller shaft is provided with a rotation drive mechanism (not shown), and the rotation drive mechanism is connected to the control unit 60 by wiring. As described above, the application roller 46 can rotate in the circumferential direction, and is configured such that the adhesive of the adhesive tank 45 is supplied to the outer periphery.

  The application roller 46 is formed with a large roller outer diameter on both sides and a small roller outer diameter on the center portion according to the work shape formed with a small work outer diameter on both sides and a large work outer diameter on the center portion. It has a stepped portion with a changed roller outer diameter.

  A scraper 48 is attached to the movable member 44. The scraper 48 is provided so as to extend in the axial direction at an interval from the outer periphery of the application roller 46.

  A drying heater 49 is provided on the downstream side of the stage 42 so as to cover the belt body 12. The drying heater 49 is connected to the control unit 60 by wiring.

  The workpiece collection unit 50 is provided at the downstream end (right end) of the lower portion of the belt body 12 that is hung between the pair of pulleys 11 in the workpiece conveyance unit 10.

  The control unit 60 is configured to control the operation of each unit by computer.

  Next, the operation of the adhesive application device A according to the present embodiment, that is, the operation control by the control unit 60 will be described with reference to FIGS.

  First, the primer adhesive was poured into the adhesive tank 45 of the primer adhesive application section 40a, and the adhesive was poured into the adhesive tank 45 of the adhesive application section 40b so that the lower part of the application roller 46 was immersed therein. Thereafter, when the adhesive application device A is operated, in the work transport unit 10, the driving pulley 11 rotates by a predetermined number of rotations at regular time intervals, and the belt body 12 travels stepwise. Further, the work support member 13 rotates by the shaft rotation mechanism.

  In the work supply unit 20, the cylindrical work W is placed on the work support member 13 and supplied when the belt body 12 is not running. Thereafter, the workpiece W continues to rotate in the circumferential direction by the rotation of the workpiece support member 13. The inner diameter of the workpiece W is slightly smaller than the outer diameter of the workpiece support member 13, and therefore the workpiece W is fitted on the workpiece support member 13 with play. In addition, as a material of the workpiece | work W, iron, aluminum, resin etc. are mentioned, for example.

  In the workpiece preheating unit 30, the workpiece W is conveyed by the belt body 12 through the heated preheating heater 31. At this time, the workpiece W conveyed from the workpiece supply unit 20 is preheated by passing through the preheater 31.

  In the adhesive application unit 40, when the work W conveyed from the work preheating unit 30 is positioned directly above the application roller 46 in the primer adhesive application section 40a and the belt body 12 is in a non-running state, the stage 42 However, while the application roller 46 rotates from the standby position by the elevating drive mechanism 41, it comes into contact with the lower end of the work W supported by the work support member 13 and rises to the adhesive application position where the work W is slightly lifted. Then, this state is maintained at least for one rotation of the workpiece W in the circumferential direction (T1 → T2 in FIG. 4). At this time, an excessive amount of the primer adhesive dipped in the adhesive tank 45 and adhered to the outer periphery of the application roller 46 is scraped off by the scraper 48, and an appropriate amount remains, and FIGS. As shown in (a), when the application roller 46 and the workpiece W are rotated, a primer adhesive reservoir is formed between them, and the primer adhesive is sufficiently applied to the entire outer periphery of the workpiece W. In addition, the up-and-down drive mechanism 41 has the vertical position of the application roller 46 and the work W supported by the work support member 13 as a contact position where they are in contact with a non-contact position where they are not in contact. The vertical relative position changing means for changing between the two is configured.

  Next, the stage 42 is lowered from the processing position to the standby position. Then, the application roller 46 and the work W are brought into a non-contact state, and the application roller 46 is held, for example, for 1/4 to 1/2 rotation in the circumferential direction (T2 → T3 in FIG. 4). At this time, as shown in FIG. 5B and FIG. 6B, the primer adhesive pool between the application roller 46 and the workpiece W is eliminated, and the workpiece W rotates in the circumferential direction. The primer adhesive applied to the entire outer periphery of W is made uniform.

  Next, after the stage 42 is raised again from the standby position to the adhesive application position, the movable member 44 travels along the rail 43 by the travel drive mechanism (T3 → T4 → T5 in FIG. 4). At this time, in the same manner as described above, an excessive amount of the primer adhesive immersed in the adhesive tank 45 and scraped off is scraped off by the scraper 48 on the outer periphery of the application roller 46, and an appropriate amount remains. As shown in FIG. 6C and FIG. 6C, the primer adhesive adhered to the outer periphery of the application roller 46 on the entire outer periphery of the work W by rotating the application roller 46 and the workpiece W while being separated in the direction perpendicular to the axis. Is transferred and applied. The traveling speed of the movable member 44 may be constant as shown by T4 → T5 in FIG. 4, or may be accelerated or decelerated. Note that the travel drive mechanism constitutes an axial / horizontal relative position changing means for changing the relative position of the application roller 46 and the workpiece W supported by the workpiece support member 13 in the axial / horizontal direction.

  Next, the belt body 12 enters a running state, and the workpiece W coated with the primer adhesive is conveyed. Therefore, the time for applying the primer adhesive to the workpiece W coincides with the time for the belt body 12 to be in the non-running state. At the same time, the stage 42 returns from the processing position to the standby position, and the movable member 44 also returns to the original position.

  Next, the workpiece W is conveyed by the belt body 12 through the heated drying heater 49. At this time, the workpiece W passes through the drying heater 49, whereby the primer adhesive solvent is scattered and a primer adhesive layer is formed on the outer periphery.

  In the subsequent adhesive application section 40b, the same operation as that of the primer adhesive application section 40a is performed in synchronization. At this time, the present adhesive is applied to the entire outer periphery of the workpiece W conveyed from the primer adhesive application section 40a, and the present adhesive layer is formed on the primer adhesive layer.

  The workpiece collection unit 50 removes the workpiece W from the workpiece support member 13 when the belt body 12 is not running. At this time, the bonded workpiece W conveyed from the adhesive application unit 40 is collected.

  According to the adhesive application device A according to the above-described embodiment, an adhesive pool is formed between the application roller 46 and the work W, and the adhesive is applied to the entire outer periphery of the work W. After removing the adhesive pool by separating them in the direction, they are brought into contact again and this time, the adhesive on the outer periphery of the coating roller 46 is transferred to the entire outer periphery of the workpiece W while separating them in the direction perpendicular to the axis. Since the adhesive is applied in two steps, the adhesive can be applied to the cylindrical workpiece W without omission. In particular, in the case of a workpiece W having a stepped portion having a changed outer diameter, it is effective that the adhesive can be applied to the corners of the stepped portion and the like by forming an adhesive pool and applying the adhesive in the previous stage. In the latter stage, the adhesive can be sufficiently applied to the outer periphery of the workpiece W.

  In the above-described embodiment, the workpiece W is formed so that the outer diameter of the workpiece on both sides is small and the outer diameter of the workpiece in the central portion is small, and the application roller 46 corresponds to the shape of the workpiece. Although not limited, as shown in FIG. 7 (a), even if it is intended for a workpiece W formed with a large workpiece outer diameter on both sides and a small workpiece outer diameter in the central portion, FIG. As shown in FIG. 7 (c), even if the workpiece W is formed so that the outer diameter of the workpiece on one side is large and the outer diameter of the other portion is small as shown in FIG. The target may be a workpiece W having a uniform diameter.

  In the said embodiment, although it was set as the structure which can rotate the workpiece | work support member 13 and thereby can rotate the workpiece | work W in the circumferential direction, it is not specifically limited to this, A workpiece | work support member rotates a workpiece | work. The structure which does not have a function and rotates an application | coating roller and rotates a workpiece | work with the viscosity of an adhesive agent may be sufficient.

  In the above-described embodiment, the vertical relative position changing unit is configured by the elevation drive mechanism 41 of the stage 42. However, the present invention is not particularly limited thereto, and may be configured to displace the workpiece W in the vertical direction. The structure which displaces both the roller 46 and the workpiece | work W to an up-down direction may be sufficient.

  In the above-described embodiment, the axis-to-horizontal relative position changing means is configured by the travel drive mechanism of the movable member 44. However, the present invention is not particularly limited thereto, and the configuration is such that the workpiece W is displaced in the axis-to-axis horizontal direction. Alternatively, a configuration in which both the application roller 46 and the workpiece W are displaced in the direction perpendicular to the axis may be employed.

  The present invention relates to an adhesive application apparatus and method.

It is a figure which shows typically the structure of the adhesive agent coating device which concerns on embodiment. It is a side view which shows an adhesive agent application part. It is a front view which shows an adhesive agent application part. It is a time chart of adhesive application operation. (A)-(c) is explanatory drawing which shows adhesive agent application | coating operation | movement from a side surface. (A)-(c) is explanatory drawing which shows adhesive agent application | coating operation | movement from the front. (A)-(c) is a side view which shows the workpiece | work of other embodiment.

Explanation of symbols

A Adhesive coating device W Workpiece 10 Work transporting section 11 Pulley 12 Belt body 13 Work support member (work support section)
30 Work Preheating Unit 31 Preheating Heater 40 Adhesive Application Unit 40a Primer Adhesive Application Section 40b Main Adhesive Application Section 41 Elevating Drive Mechanism (Vertical Relative Position Changing Unit)
42 Stage 43 Rail 44 Movable member 45 Adhesive tank 46 Application roller 47 Roller support member 48 Scraper 49 Drying heater 50 Work recovery unit 60 Control unit (control means)

Claims (4)

An adhesive application roller that is provided so that the axial direction is horizontal and is rotatable in the circumferential direction, and configured to be supplied with an adhesive on the outer periphery;
A workpiece support provided so as to support a cylindrical workpiece in an axial direction parallel to the axial direction of the coating roller above the coating roller;
Vertical relative position changing means for changing the relative position in the vertical direction between the application roller and the work supported by the work support portion between a contact position where they contact and a non-contact position where they are not in contact with each other. When,
Axial / vertical / horizontal relative position changing means for changing the relative position of the application roller and the workpiece supported by the workpiece support in the axial / horizontal direction;
By positioning the relative position in the vertical direction between the application roller and the work supported by the work support portion by the vertical direction relative position changing means at the contact position, and rotating the application roller, After an adhesive pool is formed between the workpiece supported by the workpiece support portion and the adhesive is applied to the entire outer periphery of the workpiece, the vertical relative position changing means temporarily changes the relative position in the vertical direction. The vertical position relative to the vertical position and the relative position in the vertical direction is set to the contact position by the vertical relative position change means, and the vertical and horizontal relative position change means is used to change the positions of the axes in the non-contact position. The adhesive on the outer periphery of the application roller is changed by changing the relative position in the right-and-left direction and rotating the application roller. And control means for transferring the entire circumference periphery of the supported workpiece over click support,
An adhesive application device comprising: In the adhesive application device according to claim 1,
An adhesive application device in which the application roller has a stepped portion in which the outer diameter of the roller changes in accordance with the workpiece shape. In the adhesive application device according to claim 1 or 2,
The work support part has a function of rotating the supported work in the circumferential direction,
When the relative position in the vertical direction between the application roller and the work supported by the work support is positioned at the non-contact position by the vertical relative position changing means, the control means is caused by the work support. An adhesive applicator that rotates the workpiece in the circumferential direction.   An adhesive application roller that is provided so that the axial direction is horizontal and is rotatable in the circumferential direction and supplied with an adhesive on the outer periphery, and the axial direction of the application roller above the application roller By positioning the relative position in the vertical direction with the cylindrical workpiece provided parallel to the axial direction at the contact position where they contact and rotating the coating roller, the coating roller and the workpiece After the adhesive pool is formed between them and the adhesive is applied to the entire outer periphery of the workpiece, the relative position in the vertical direction is temporarily set to the non-contact position, and then the relative position in the vertical direction is determined. The adhesive position on the outer periphery of the application roller is transferred to the entire outer periphery of the workpiece by changing the relative position in the horizontal direction perpendicular to the axis and rotating the application roller. Adhesive coating method to be.

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