JP6283472B2 - Coating device - Google Patents

Description

  The present invention relates to a technique for adhering a material having elasticity such as a fabric constituting a film or clothing, and in particular, when adhering such a material, it is possible to adhere without inhibiting the elasticity. And an adhesive application device.

  In recent years, in the field of clothing (especially underwear), there has been proposed a method and an apparatus for adhering fabrics of respective parts constituting an underwear to each other with an adhesive, rather than sewing (sewing) with needles and sewing threads. By bonding the fabrics with an adhesive, it is possible to eliminate the unevenness of the sewing thread formed on the surface of the fabric by sewing, and to make the front and back surfaces of the underwear smooth. Thus, by making the adhesive part thin, it is possible to manufacture an underwear such as an undershirt that has a good touch and does not resonate with the outer.

In such an apparatus for adhering the cloth, the adhesive is usually heated to be liquid and discharged from a nozzle. The dough is arranged in the vicinity of the nozzle and sequentially transferred. As a result, an adhesive is attached to the cloth, and another cloth is then superimposed on the cloth with the adhesive attached, and the cloths are bonded together by pressure bonding.
An example of such a fabric bonding apparatus is disclosed in JP-A-11-512129 (Patent Document 1), JP-A 2010-180487 (Patent Document 2), and JP-A 2012-117160 (Patent Document 3). Disclosed. All of the devices disclosed in these Patent Documents 1 to 3 apply the adhesive to the cloth or the like by discharging the adhesive from the nozzle onto the cloth or the like being conveyed.

  JP-A-2-229573 (Patent Document 4) discloses an apparatus for spraying an adhesive on a porous web such as a sanitary napkin or a baby diaper.

Japanese Unexamined Patent Publication No. 11-512129 JP 2010-180487 A JP 2012-117160 A JP-A-2-229573

  In the adhesive application methods disclosed in Patent Documents 1 to 4 described above, the adhesive is applied over almost the entire width of the adhesive region along the conveying direction of the material or web to be applied. . For this reason, the adhesive is applied to almost the entire area of the bonding region, and the fabrics and the like are bonded to each other. Moreover, although it does not show a prior art document concretely, it is also well-known that the heat bonding adhesive tape is supplied to the cloth and the cloths are bonded to each other.

  However, in such a case, the adhesive is applied in a sheet form and bonded to almost the entire area of the bonding region. For this reason, since the adhesion region is planar, high adhesion strength can be secured between the adhesion surfaces of the fabric, but the stretchability of the fabric is hindered, and the stretchability inherent to the fabric is impaired. . Clothing such as underwear composed of the fabric thus bonded does not have elasticity even if the bonded portion has sufficient strength.

  The present invention has been developed in view of the above-mentioned problems, and the object of the present invention is to bond materials having elasticity such as films, webs, fabrics, etc., with an adhesive. It is an object of the present invention to provide an adhesive application device capable of adhering without impairing the stretchability of a cloth or the like while ensuring strength.

In order to achieve the above object, the coating apparatus according to the present invention employs the following technical means.
That is, the coating apparatus according to the present invention is configured so that a conveying means for conveying a material having elasticity, a conveying table that supports the material being conveyed, and the conveying table across the material. A reciprocating means for reciprocally moving at least one of the transport table and the coating nozzle in a direction different from the transport direction of the material. It is provided.

Preferably, at least one of the transport table and the coating nozzle is separated / closed on the upstream side of the coating nozzle in the transport direction of the material and based on the sensor for measuring the thickness of the material and the measured thickness. And a moving means for further comprising.
More preferably, the apparatus further includes a suction part that is provided on the transport table and sucks a part of the material, and the suction part is a suction area that overlaps the application area by the application nozzle or a suction area in the vicinity of the application area. Can be configured to aspirate.

More preferably, the transport means includes at least one transport roller provided on the downstream side of the application nozzle in the transport direction of the material, and drive means for driving the transport roller, and the transport roller A portion of the material may be configured to aspirate the material.
More preferably, the reciprocating means can be configured to reciprocate in a direction perpendicular to the material transport direction.

More preferably, it can be configured to further include a control unit for controlling the transport speed of the material by the transport means according to the stretchability with respect to the portions having different stretchability in the material.
More preferably, it can be configured to further include a control unit for controlling the reciprocating speed of the reciprocating means according to the stretchability with respect to the portions having different stretchability in the material.

More preferably, the control unit can be configured to control the discharge amount of the coating agent from the coating nozzle per unit time when the transport speed or the reciprocating speed is changed.
More preferably, the control unit can be configured to control the thickness of the coating agent discharged from the coating nozzle and formed on the material to be constant.

More preferably, the material includes at least a cylindrical portion, the coating agent is applied to an end portion of the cylindrical portion, holds the opposite side of the end portion of the cylindrical portion, and the end portion is conveyed. It can be configured to further include a rotation holding portion that rotates in conjunction with the rotation.
More preferably, the control unit can be configured to control the discharge amount to be decreased when the transport speed is decreased or the reciprocating speed is decreased.

More preferably, the conveying means can be configured to adjust the entry / exit in the direction perpendicular to the traveling direction of the material when conveying the material.
More preferably, it is provided on the upper surface of the transport table and in the vicinity of the application region by the application nozzle, and further includes a restricting means for restricting the position of the material in the direction perpendicular to the traveling direction of the material. can do.

  According to the present invention, when materials having elasticity such as films, webs, and fabrics are bonded to each other via an adhesive, adhesion without interfering with the elasticity provided by the fabrics is ensured while ensuring the adhesive strength. It is possible to provide an apparatus for applying an adhesive that can be used.

It is a perspective view which shows the whole coating device which concerns on embodiment of this invention. It is the elements on larger scale of FIG. It is a front view of the coating device shown in FIG. It is a side view of the coating device shown in FIG. It is a top view of the coating device shown in FIG. FIG. 4 is a partially enlarged view of FIG. 3. It is the elements on larger scale of FIG. It is a control block diagram of the coating device shown in FIG. It is a front view of the undershirt which the adhesive agent apply | coated with the coating device shown in FIG. 1, and was adhere | attached. FIG. 10 is a partially enlarged view of FIG. 9. It is a perspective view which shows the wearing condition of the undershirt of FIG. It is a figure which shows the adhesion procedure of the body and sleeve part of the undershirt of FIG.

  Hereinafter, a coating apparatus 1000 according to an embodiment of the present invention will be described with reference to the drawings. The applicator 1000 is an apparatus for applying an adhesive of a thermoplastic resin, which is an example of a coating agent, to a cloth for clothing, which is an example of a breathable material having elasticity, and is installed separately thereafter. The cloth to which the adhesive is applied is bonded to the other cloth by the bonded bonding apparatus. As described above, the object to be coated by the coating apparatus 1000 is a breathable material, but it is not always necessary to have breathability. For example, rain feathers, ski wear, snowboards that do not have breathability (or do not have sufficient breathability). It may be a material used for wear, wet suit, etc. (a material that requires sealing and requires a certain amount of elongation). In this case, it is preferable to transport the material without performing (or weakening) suction by a transport table suction hole 1412 provided in the transport table 1410 described later.

It should be noted that immediately after the adhesive is applied by the coating device 1000 (in some cases, by a coating device provided with an adhesive mechanism), the fabric to which the adhesive is applied may be bonded to another fabric. Immediately after heating and applying the physical properties of the adhesive used in the coating apparatus 1000 according to the present embodiment to the fabric, it adheres to other objects without being peeled off from the fabric to be coated at room temperature. The cloth to which the adhesive is applied is bonded to the other cloth by heating in the bonding apparatus. For this reason, after apply | coating an adhesive agent to cloth | dough with this application | coating apparatus 1000, it can perform suitably adhere | attaching cloth | dough with the adhesion apparatus installed separately. This is preferable when setting the bonded portion of the fabric in the bonding apparatus.

  In addition, the breathable material having stretchability is not limited to the fabric, and may be any material (material) that is sheet-like and has breathability and stretchability, such as stretchable fabric and other stretch materials. Examples include materials, rubber materials, stretchable films such as polyurethane films, and composites formed by combining these. Moreover, it may be used not only when the same material is bonded but also when different materials are bonded. That is, the object to be coated in the present invention is not limited to a cloth or the like, and may be any breathable material having elasticity.

  Although the details will be described later as an operation, it is assumed that the application target to which the adhesive is applied by the coating apparatus 1000 according to the present embodiment is a cloth forming an underwear, and the underwear is formed by adhering the cloth. The Furthermore, this underwear is a female undershirt that can be worn under an outer garment (for example, a thin knit), feels good, and does not resonate with the outer.

[overall structure]
FIG. 1 is an overall perspective view of a coating apparatus 1000 according to the present embodiment, and FIG. 2 is an enlarged view thereof. As shown in FIG. 1 and FIG. 2, the coating apparatus 1000 mainly includes a transport unit 1100 that transports a cloth that is an object to be coated and is an example of a breathable material having elasticity, and an adhesive. The coating unit 1200 for applying a repetitive pattern on the fabric, the reciprocating unit 1300 for reciprocating the coating nozzle 1240 to form a repetitive pattern, and the spacing between the coating nozzle 1240 and the fabric constant according to the thickness of the fabric A separation moving unit 1400 to be held, a control unit 1500 that controls the entire coating apparatus 1000, and an air machine (compressor or blower) that generates compressed air used in each unit of the coating apparatus 1000 (Hereinafter referred to as compressor 1600), and supports frame 1710 and frame 1710. Caster constituted by the 1720 and 1730 adjuster that.

  The applicator 1000 is provided with a conveyance table 1410 that supports the fabric being conveyed in the conveyance unit 1100 that conveys the fabric, and is provided so as to face the conveyance table 1410 with the fabric sandwiched therebetween, and the adhesive is not contacted with the fabric. And a reciprocating unit 1300 that reciprocally moves at least one of the conveyance table 1410 and the application nozzle 1240 in a direction different from the conveyance direction of the dough. In this coating apparatus 1000, the reciprocating unit 1300 reciprocates the coating nozzle 1240 in a direction different from the dough conveying direction, but if the conveying table 1410 is reciprocated in a direction different from the dough conveying direction ( That is, it does not matter if it is not reciprocated in the same direction as the dough conveying direction). Further, in this coating apparatus 1000, the reciprocating unit 1300 reciprocates the coating nozzle 1240 in a direction orthogonal to the dough conveyance direction, but the direction may not be orthogonal as long as the direction is different.

  Furthermore, the coating apparatus 1000 is provided on the upstream side of the coating nozzle 1240 in the fabric transport direction, and a thickness detection sensor 1430 that measures the thickness of the fabric, and the transport table 1410 and the coating nozzle based on the measured fabric thickness. A separation moving unit 1400 that separates / closes at least one of 1240 is provided. In the coating apparatus 1000, the separation moving unit 1400 lowers the transport table 1410 and separates it from the coating nozzle 1240, but the coating nozzle 1240 can be lifted and separated from the transport table 1410, or the transport table 1410 may be lowered and application nozzle 1240 may be raised and separated from each other. The separation moving unit 1400 can perform a proximity operation as the reverse operation of such a separation operation.

  Further, the transport table 1410 of the coating apparatus 1000 is provided with a transport table suction hole 1412 for sucking a part of the dough, and the transport table suction hole 1412 is a suction region that overlaps the application region by the coating nozzle 1240 or the above-described suction region. It is characterized by sucking the suction area in the vicinity of the application area. Such a conveyance stand suction hole 1412 can prevent the fabric on the conveyance table 1410 from being lifted, and the clearance between the application nozzle 1240 and the fabric can be kept constant.

  Further, the transport unit 1100 of the coating apparatus 1000 includes at least one fabric transport suction roller 1110 provided on the downstream side of the coating nozzle 1240 in the fabric transport direction, and a transport drive motor that drives the suction roller 1110. 1140, and the fabric is sucked from the suction hole 1112 in a part of the suction roller 1110 (upward in the coating apparatus 1000).

  Further, the control unit 1500 of the coating apparatus 1000 controls the conveyance speed of the fabric by the conveyance unit 1100 and / or the reciprocation speed of the reciprocating movement unit 1300 according to the elasticity for the portions having different elasticity in the fabric. It is characterized by. In the coating apparatus 1000, the control unit 1500 controls the conveyance speed of the fabric by the conveyance unit 1100. In this case, the control unit 1500 repeats the adhesive coating pattern at a site where the stretchability is large (easily stretched) so that the unit length of the repetition is shortened at a site where the stretchability is small (hardly stretchable). Control is made so that the unit length of the repetition becomes longer. Furthermore, the control unit 1500 controls the discharge amount of the adhesive per unit time from the application nozzle 1240 when the repetition pitch of the adhesive application pattern is changed in this way. In this case, the control unit 1500 controls the thickness of the adhesive discharged from the application nozzle 1240 and formed on the cloth to be constant. Further, the control unit 1500 increases the repetition pitch of the adhesive application pattern when the conveyance speed is reduced (when the repetition pitch of the adhesive application pattern is shortened) or when the reciprocation speed is decreased. In this case, the discharge amount of the adhesive is controlled to be reduced.

Each part of the coating apparatus 1000 according to the present embodiment having such characteristics will be described. In the following description, in addition to FIGS. 1 and 2, FIG. 3 showing a front view of the coating apparatus 1000 and FIG. 6 which is an enlarged view thereof, FIG. 4 showing a side view of the coating apparatus 1000 and an enlarged view thereof. 7 and FIG. 5 showing a top view of the coating apparatus 1000 are appropriately referred to.
[Each component configuration]
・ Transport section 1100
The conveyance unit 1100 conveys the material to be coated in the arrow T direction. The conveyance unit 1100 includes a suction roller 1110 that sucks and conveys the fabric, a first clamping roller 1120 that sandwiches the fabric between the suction roller 1110 on the downstream side in the conveyance direction of the fabric, and a conveyance platform on the upstream side in the conveyance direction of the fabric. 1410, and a conveyance driving motor 1140 that rotationally drives the suction roller 1110, the first clamping roller 1120, and the second clamping roller 1130.

The suction roller 1110 is rotated in the direction indicated by the arrow R (FIGS. 2 and 7) when the rotational force is transmitted from the conveyance drive motor 1140 by the drive belt 1142, and the fabric is formed in the region of the angle α (FIG. 7) above the suction roller 1110. (Α is about 90 ° to 180 ° from the vertically upward direction to the downstream side of the material conveyance). The height of the upper surface of the suction roller 1110 corresponds to the height of the upper surface of the conveyance table 1410 at the operation position (the arrow Z (2) side in FIG. 2), and the fabric is smoothly transferred from the conveyance table 1410 to the suction roller 1110. Be transported. Note that the suction range of the suction roller 1110 is not limited to the angle α described above. The suction range is transmitted to the fabric conveyance driving force, and the fabric type and conveyance so that the fabric does not wind around the suction roller when the fabric leaves. What is necessary is just to determine suitably according to tension | tensile_strength, a conveyance speed, etc. For example, the angle α may start from 10 degrees upstream from the vertical direction in the dough conveying direction.

A number of suction holes 1112 are provided around the suction roller 1110, and a suction mechanism that does not rotate is provided in the suction roller 1110 (for example, suction using an ejector or a blower that generates negative pressure by compressed air supplied from the compressor 1600. The mechanism) sucks the fabric from the suction hole 1112 in the region of the angle α described above.
The first clamping roller 1120 is held by a first arm 1124 that can rotate between an operating position (in the direction of arrow S (2) in FIG. 7) and a preparation position (in the direction of arrow S (1) in FIG. 7). At the same time, the rotational force is transmitted from the transport drive motor 1140 by the first drive belt 1122 at least in the operation position, and the sheet is rotated in the arrow R direction (FIGS. 2 and 7). In this operation position (on the downstream side in the conveyance direction of the fabric), the first clamping roller 1120 is provided so that the suction roller 1110 and the outer periphery thereof are in contact with each other, and the suction roller 1110 and the first clamping roller 1120 are used to remove the fabric. The dough is nipped (and further sucked by the suction roller 1110) and conveyed in the direction indicated by the arrow T. The outer peripheral surface of the first clamping roller 1120 is covered with a material having a high friction coefficient with the fabric, or the first clamping roller 1120 itself is made of a material with a high friction coefficient with the fabric.

  The second clamping roller 1130 is held by a second arm 1134 that can rotate between an operating position (in the direction of arrow U (2) in FIG. 4) and a preparation position (in the direction of arrow U (1) in FIG. 4). At the same time, the rotational force is transmitted from the conveyance drive motor 1140 by the second drive belt 1132 at least in the operation position, and the same is rotated in the same arrow R direction (FIGS. 2 and 7) as the first clamping roller 1120. In this operation position (on the upstream side in the conveyance direction of the fabric), the second sandwiching roller 1130 is provided so as to be in contact with the transport table 1410, and the fabric is sandwiched between the transport table 1410 and the second sandwiching roller 1130 ( Furthermore, the dough is conveyed in the direction indicated by the arrow T by being sucked by the suction roller 1110 and nipped by the suction roller 1110 and the first nipping roller 1120. Similar to the first sandwiching roller 1120, the outer peripheral surface of the second sandwiching roller 1130 is covered with a material having a high friction coefficient with the fabric, or the second sandwiching roller 1130 itself is made of a material with a high friction coefficient with the fabric. It is configured.

  The first clamping roller 1120 and the second clamping roller 1130 have the following differences. The first sandwiching roller 1120 alone rotates to the operating position, and together with the suction roller 1110, sandwiches the fabric on the downstream side in the fabric transport direction and transports the fabric in the direction indicated by the arrow T. The second nip roller 1130 does not convey the dough alone, but rotates the second nip roller 1130 to the operating position when the first nip roller 1120 is in the operating position, so that the dough is upstream in the dough conveying direction. Is transported in the direction indicated by the arrow T. For example, only the first sandwiching roller 1120 is used when the fabric is a small tube and there is no need to sandwich and transport the fabric upstream in the fabric transport direction. The downstream side) and the second clamping roller 1130 (upstream side in the material conveyance direction) are used because the material has a large planar shape, and the material needs to be nipped and conveyed upstream and downstream in the material conveyance direction. Each case can be assumed. Although it can be assumed in this way, it is also possible to assume that the material is conveyed without using the first clamping roller 1120 depending on the material to be conveyed (here, the cloth). Further, a conveyance roller without the suction hole 1112 may be used as the suction roller 1110. In this case, it is preferable to apply a material for gripping the material to be conveyed to the surface of the conveying roller and / or a surface treatment.

A rotational force is transmitted to the suction roller 1110, the first clamping roller 1120, and the second clamping roller 1130 involved in the conveyance of the fabric as follows. Suction roller 11
10, the rotational force is transmitted from the conveyance drive motor 1140 via the drive belt 1142 (including the case where there is a rotational force transmission belt (not shown)), and the first sandwiching roller 1120 and the second sandwiching roller 1130 receive the first The rotational force is transmitted from the clamping drive motor 1150 via the first drive belt 1122 and the second drive belt 1132 (including the case where there is a rotational force transmission belt (not shown)). In this case, when the rotational speed of the conveyance drive motor 1140 is changed by the control unit 1500 and the peripheral speed of the suction roller 1110 is changed, the peripheral speed of the first sandwiching roller 1120 and the peripheral speed of the second sandwiching roller 1130 are changed to the suction roller 1110. A rotational force transmission mechanism (clamping drive motor 1150 speed control, drive belt, pulley, etc.) is configured so as to change in synchronization with the peripheral speed. Some of the rollers may be driven rollers.

・ Applying unit 1200
The application unit 1200 applies, for example, a thermoplastic resin adhesive from the application nozzle 1240 to the fabric. The application unit 1200 is connected to the application nozzle 1240, an adhesive storage unit 1210 that stores a necessary amount of adhesive and maintains a temperature so as to have a predetermined viscosity, and is connected to the adhesive storage unit 1210 and heated. A gear pump 1230 that feeds the adhesive having a desired viscosity to the application nozzle 1240 and a gear pump motor 1220 that rotates the gear pump 1230. These adhesive storage unit 1210, gear pump motor 1220, gear pump 1230, and application nozzle 1240 are basically known ones. The amount of the adhesive supplied to the application nozzle 1240 by the application unit 1200 (that is, the amount of adhesive discharged from the application nozzle 1240) is controlled by the control unit 1500, as will be described in detail later.

The gear pump motor 1220 has its rotational speed changed by the control unit 1500 to control the amount of adhesive sent from the gear pump 1230 to the application nozzle 1240, and the amount of adhesive applied from the application nozzle 1240 to the fabric is controlled. Is done.
The nozzle diameter of the application nozzle 1240 is determined by the type of material to be applied, the repetitive pattern (for example, the amplitude of the application nozzle 1240 by the reciprocating movement unit 1300), the amount of application per unit area of the material, and the like.

The application nozzle 1240, together with the reciprocating movement unit 1300 and the thickness detection sensor 1430, is operated by a retreating air cylinder 1350 (described only in FIG. 8) and a preparation position (in the direction indicated by arrow Y (2) in FIG. 2). Arrow Y (1) direction). At the preparation position, the dough is prepared and maintenance work for the coating apparatus 1000 is performed.
・ Reciprocation unit 1300
The reciprocating unit 1300 repeatedly reciprocates the application nozzle 1240 with a desired amplitude in a direction different from the conveyance direction of the dough. As described above, the adhesive is applied to the fabric in a repetitive pattern by the reciprocating movement of the application nozzle 1240 by the reciprocating unit 1300 and the conveyance of the fabric by the conveyance unit 1100. The reciprocating speed of the application nozzle 1240 by the reciprocating unit 1300 is controlled by the control unit 1500, details of which will be described later.

  The reciprocating unit 1300 drives a nozzle holder 1330 that holds the application nozzle 1240, a holder stay 1340 that holds the nozzle holder 1330, a crank 1320 that is connected to the nozzle holder 1330 via the holder stay 1340, and the crank 1320. And a crank motor 1310. These application nozzle 1240, nozzle holder 1330, and holder stay 1340 are reciprocated (in the direction of arrows XX in FIG. 2) by a crank 1320 and a crank motor 1310. In this coating apparatus 1000, the reciprocating movement is realized using such a crank 1320, but the mechanism for realizing the reciprocating movement is not limited to such a crank 1320.

The stroke (amplitude of an adhesive pattern P shown in FIG. 12 to be described later) in the reciprocating movement unit 1300 of the reciprocating movement, which becomes the amplitude of the coating nozzle 1240, is a width (fabric in a direction perpendicular to the cloth conveying direction in the adhesive application area). It is determined based on (adhesion width).
Although the thickness detection sensor 1430 is not held by the nozzle holder 1330 and does not reciprocate by the reciprocating unit 1300, the thickness detection sensor 1430 includes the coating nozzle 1240 and the reciprocating unit 1300 (holder stay 1340, nozzle holder 1330). , The nozzle holder 1330, the crank 1320, and the crank motor 1310), and the retreat air cylinder 1350, the operating position (in the direction of arrow Y (2) in FIG. 2) and the preparation position (in the direction of arrow Y (1) in FIG. 2). Moved to.

  As described above, in the reciprocating unit 1300, the application nozzle 1240 is repeatedly reciprocated at a desired amplitude during the conveyance of the fabric, but the application nozzle 1240 is reciprocated while the conveyance of the fabric is stopped or intermittently conveyed. It doesn't matter. That is, various coating patterns (for example, a coating pattern such as a pulse shape instead of a zigzag shape which will be described later) can be realized by combining the conveyance and stop of the dough and the reciprocating movement of the coating nozzle 1240.

・ Separation moving part 1400
The separation moving unit 1400 moves the conveyance table 1410 away from the application nozzle 1240 according to the thickness of the fabric detected by the thickness detection sensor 1430 provided on the upstream side in the fabric direction (the direction indicated by the arrow Z (1) in FIG. 2). Or the carriage 1410 is moved closer to the operating position (in the direction of arrow Z (2) in FIG. 2) to the application nozzle 1240. For example, when the thickness of the double part of the dough becomes thick, the conveying table 1410 is separated from the application nozzle 1240 to the separation position, and when the double part of the dough is passed, the conveying table 1410 is brought close to the operating position to the application nozzle 1240. . When the separation moving unit 1400 is applied to a material (in this case, a cloth) whose thickness continuously changes in the conveyance direction, the separation moving unit 1400 relatively moves the application nozzle 1240 and the material in accordance with the thickness of the material detected by the thickness detection sensor 1430. It is also possible to perform control to separate / approach. The separation moving unit 1400 includes a conveyance table 1410 that is separated from the application nozzle 1240 in this way, a separation air cylinder 1420 that realizes a separation operation, and a thickness detection sensor 1430 that detects the thickness of the cloth. The timing at which the carriage 1410 is separated from the application nozzle 1240 by the separation moving unit 1400 is controlled by the control unit 1500, as will be described in detail later.

  As shown in FIG. 2, the transport table 1410 has a substantially L-shaped cross section, and the corners are formed obliquely so that the fabric is easily transported in the arrow T direction. A conveyance stand suction hole 1412 for sucking the dough is provided on the dough conveyance surface (upper surface) of the conveyance stand 1410. The transport table suction hole 1412 is provided in a position including at least the adhesive application region by the application nozzle 1240 in the suction range by the transport table suction hole 1412. Conversely, the transport table suction hole 1412 may be provided in the adhesive application region by the application nozzle 1240 at a position including at least the suction range by the transport table suction hole 1412. That is, the transport table suction hole 1412 may have an area where the adhesive application region by the application nozzle 1240 overlaps with the suction range by the transport table suction hole 1412. Furthermore, it is not always necessary to provide an area where the adhesive application area by the application nozzle 1240 and the suction area by the transport table suction hole 1412 overlap. For example, the area around the application area of the adhesive by the application nozzle 1240 may be a suction range by the transport table suction hole 1412. Further, the suction range by the transport table suction hole 1412 is not limited to one area, and may be divided into a plurality of areas. Such a conveyance stand suction hole 1412 can prevent the dough from rising on the conveyance stand 1410, and if the clearance between the application nozzle 1240 and the dough can be kept constant, a suction range ( The relative position and the number of areas with respect to the application area of the adhesive by the application nozzle 1240 are not limited.

Further, a regulation plate 1414 that regulates the position of the fabric in the direction perpendicular to the fabric conveyance direction is provided on the fabric conveyance surface of the conveyance table 1410 and in the vicinity of the application region by the application nozzle 1240. More specifically, in the present embodiment, since the adhesive is applied to the fabric edge, the regulation plate 1414 is provided at a position corresponding to the fabric edge.
[Control block]
The coating apparatus 1000 having such a configuration is controlled by the control unit 1500. The control unit 1500 includes, for example, a control panel 1510 provided with various instruments, various operation buttons 1520 that are input devices for the operator, various display meters 1530 that are output devices to the operator, and an operator And a touch panel 1540 which is an input / output device.

More specifically, the control unit 1500 will be described with reference to the control block diagram shown in FIG.
As shown in FIG. 8, the control unit 1500 receives various input signals according to a program and parameters (such as a conveyance speed) stored in advance, performs arithmetic processing, and outputs output signals (control signals) to various output devices. An arithmetic unit for output (here, CPU 1800), an input interface 1810 for receiving input signals from the thickness detection sensor 1430 and the operation buttons 1520, an input signal from the touch panel 1540, and displaying various information on the touch panel 1540 An input / output interface 1820, a motor drive driver 1830 for controlling the various motors described above, a cylinder drive driver 1840 for controlling the various air cylinders described above, and an output interface 1850 for driving the compressor 1600. ,display A display driver 1860 for displaying various information to a vessel 1530, and a memory (storing a program and parameters), not shown.

  An input interface 1810, an input / output interface 1820, a motor drive driver 1830, a cylinder drive driver 1840, an output interface 1850, and a display driver 1860 are connected to the CPU 1800 via a bus or the like. A thickness detection sensor 1430 and an operation button 1520 are connected to the input interface 1810, a touch panel 1540 is connected to the input / output interface 1820, and a conveyance drive motor 1140, a sandwiching drive motor 1150, a gear pump motor are connected to the motor drive driver 1830. 1220 and a crank motor 1310 are connected, a retraction air cylinder 1350 and a separation air cylinder 1420 are connected to the cylinder drive driver 1840, a compressor 1600 is connected to the output interface 1850, and a display instrument 1530 is connected to the display driver 1860. Is connected. As described above, the cylinder driving driver 1840 is described as being connected to an air cylinder to control the operation, but may be an electric cylinder instead of an air cylinder.

  Hereinafter, in this coating apparatus 1000, the separation control of the conveyance table 1410 in the separation movement unit 1400, the reciprocation speed control of the application nozzle 1240 in the reciprocation movement unit 1300, and the application nozzle 1240 in the application unit 1200 are dynamically controlled. Will be described in detail. Note that dynamic control is control during the time when one material to be coated is applied (from the start of application to the end of application), and a constant operation from the start of application to the end of application. However, it is assumed that the control is not for static control (cloth feed speed control).

[Separation control]
Hereinafter, the separation control of the transport table 1410 in the separation moving unit 1400 will be described.
A signal regarding the thickness of the cloth detected by the thickness detection sensor 1430 is input to the CPU 1800 of the control unit 1500, and the CPU 1800 operates the separation air cylinder 1420 via the cylinder drive driver 1840 (up / down operation).

When the CPU 1800 receives an input signal indicating that the thickness of the fabric has changed from the thickness detection sensor 1430, the CPU 1800 outputs an operation command signal (lowering command signal) for the separation air cylinder 1420 to the cylinder driver 1840 at the calculated timing. When the separation air cylinder 1420 is lowered, the conveyance table 1410 is lowered by a predetermined distance (stroke).
The stroke of the separation air cylinder 1420 is, for example, substantially the same as the thickness of the fabric when the fabric has a double portion (the thickness of the fabric is twice). That is, the conveyance table 1410 is lowered by an amount corresponding to the increase in the thickness of the dough, and the clearance between the conveyance table 1410 and the application nozzle 1240 is made constant. The thickness detection sensor 1430 is a photoelectric transmission sensor on the premise that the cloth to be coated has transparency.

  More specifically, when the thickness detection sensor 1430 detects the double portion of the fabric, the CPU 1800 calculates the timing calculated from the distance between the thickness detection sensor 1430 and the application nozzle 1240 (the double portion has reached the application nozzle 1240). The transport table 1410 is lowered by a predetermined distance at the timing), and the transport table 1410 is returned to the original position at a timing calculated from the length of the double portion (a timing at which the double portion passes the application nozzle 1240). This timing is calculated based on the set cloth conveyance speed.

Furthermore, a thickness detection sensor is additionally provided on the downstream side in the dough conveying direction and in the vicinity of the application nozzle 1240, and the timing at which the double portion is not detected by the added thickness detection sensor (passes through the application nozzle 1240). The conveyance table 1410 may be returned to the original position at the same timing.
As described above, the thickness detection sensor 1430 is a photoelectric transmission sensor, but may be a laser displacement meter. In addition, instead of the thickness detection sensor 1430, the thickness detection sensor 1430 may be disposed upstream of the cloth conveyance direction. The position of the transport table 1410 and / or the application nozzle 1240 is controlled at an arbitrary position in the vertical direction so as to be provided in the immediate vicinity of the application nozzle 1240 so that the application surface of the cloth and the application nozzle 1240 are always at a constant interval. You may control to move with a possible stepping motor. That is, when the thickness of the dough increases, the conveyance table 1410 and / or the application nozzle 1240 are separated from each other, and when the thickness of the dough decreases, the conveyance table 1410 and / or the application nozzle 1240 are brought closer to each other. Keep the clearance constant.

[Coating nozzle reciprocating speed control]
The reciprocating speed control of the application nozzle 1240 in the reciprocating unit 1300 will be described below.
The CPU 1800 of the control unit 1500 uses a motor-driven driver to control the reciprocating speed of the reciprocating unit 1300 according to the elasticity based on the information about the different parts of the elasticity in the fabric stored in the memory as parameters. The rotational speed of the crank motor 1310 is controlled via 1830.

For example, it is assumed that the stretchability of the fabric reaches the application nozzle 1240 in order of a small part (A part), a middle part (B part), and a large part (C part). In the memory, the length of these parts (or the time for applying these parts calculated from the conveyance speed of the cloth), the pitch of the adhesive pattern P in these parts (the length of the repeating unit of the adhesive pattern P described later) Is stored). Here, the first 1/3 of the fabric length in the fabric transport direction (the length to which the adhesive is applied) is A part, the next 1/3 is B part, and the remaining 1/3 is C part, It is assumed that the pitch ratio of A part: B part: C part is 1: 1.5: 2 and is stored in the memory.

  The CPU 1800 applies the adhesive to the B portion where the fabric stretchability is medium with respect to the rotational speed of the crank motor 1310 during the period a in which the adhesive is applied to the A portion where the fabric stretchability is small. Further, the rotation speed of the crank motor 1310 in the period c in which the adhesive is applied to the portion C where the stretchability of the fabric is large is set so that the rotation speed of the crank motor 1310 in the period b becomes 1 / 1.5. 2, the speed command signal of the crank motor 1310 is output to the motor drive driver 1830. Note that the number of rotations of the crank motor 1310 and the reciprocating speed of the application nozzle 1240 are proportional to each other, and the period a, the period b, and the period c are calculated based on the set cloth conveyance speed. The dough conveyance speed is constant.

  More specifically, the CPU 1800 operates in the period c so that the crank motor 1310 rotates at a rotation speed of 100% in the period a, and the crank motor 1310 rotates in the rotation speed of 66.6% in the period b. A speed command signal is output to the motor drive driver 1830 so that the crank motor 1310 rotates at a rotation speed of 50%. Since the conveyance speed of the cloth is constant and the reciprocation speed of the application nozzle 1240 gradually decreases as the stretchability becomes higher, the period a (part A part) is about the pitch which is the length of the repeating unit of the adhesive pattern P. The period b (part B part) is 1.5 times and the period c (part C part) is twice the pitch.

  That is, when the fabric is transported, the fabric is sandwiched and pulled by the suction roller 1110 and the first clamping roller 1120 of the transport unit 1100, so that the portion C having a large stretchability is more stretched than the portion A having a low stretchability. The adhesive is applied in the stretched state. When the conveyance state is released (that is, when the cloth is removed from the coating apparatus 1000), the portion C having a large stretchability is contracted and the pitch is shortened than the portion A having a small stretchability. Since it adhere | attaches with an adhesion | attachment apparatus in the state from which a pitch differs according to the site | part from which the stretchability of cloth | dough differs, it is difficult to adhere | attach uniformly. For this reason, as described above, the adhesive was repeatedly applied at a short pitch at a low stretch portion, and the adhesive was repeatedly applied at a long pitch at a high stretch portion, thereby releasing from the transport state. Sometimes, the same pitch can be obtained even in a portion having a difference in stretchability.

  As described above, the reciprocation speed of the application nozzle 1240 is controlled in accordance with the stretchability of the portions having different stretchability in the fabric. However, the transport speed of the fabric by the transport unit 1100 may be controlled. I do not care. When the reciprocating speed of the application nozzle 1240 is constant, the pitch becomes shorter as the dough conveying speed becomes lower, and the pitch becomes longer as the dough conveying speed becomes higher.

Furthermore, a desired pitch may be realized by controlling the reciprocating movement speed of the application nozzle 1240 and the conveyance speed of the cloth by the conveyance unit 1100 according to the elasticity for parts having different elasticity in the cloth. Absent.
[Application nozzle discharge amount control]
Hereinafter, the adhesive discharge amount control from the application nozzle 1240 in the application unit 1200 will be described. First, the adhesive discharge amount control in the case where the reciprocating speed of the application nozzle 1240 is controlled with the dough conveying speed constant will be described, and then the dough conveying speed with the reciprocating movement speed of the applying nozzle 1240 constant. The control of the adhesive discharge amount when controlling the above will be described.

  As described above, when the adhesive is applied while changing the pitch of the adhesive pattern P, the length of the line segment per unit length of the fabric becomes longer in the short pitch than in the long pitch. That is, when comparing a short pitch with two adhesive patterns P and a long pitch with one adhesive pattern P per unit length of the fabric (per unit application time because the conveyance speed of the fabric is the same), The line segment is longer at the short pitch with two peaks. In this way, when the adhesive is applied by changing the pitch of the adhesive pattern P by controlling the reciprocating speed of the application nozzle 1240 while keeping the material conveyance speed constant, the same amount per application unit time is applied to the application nozzle. If the material is applied (discharged) from 1240, the length of the long-pitch line segment becomes thicker than the thickness of the short-pitch line segment. In this case, since the thickness of the line segment of the adhesive forming the adhesive pattern P is different depending on the part where the stretchability of the fabric is different, it is difficult to uniformly adhere the adhesive.

The CPU 1800 of the control unit 1500 controls the discharge amount per unit time of the adhesive from the application nozzle 1240 in conjunction with the application nozzle reciprocating speed control in which the repetition pitch of the adhesive application pattern is changed. The rotational speed of the gear pump motor 1220 is controlled via the motor drive driver 1830.
More specifically, the CPU 1800 stores the above-described parameters in the memory, and when the CPU 1800 executes the application nozzle reciprocating speed control, the length of the line segment formed by the adhesive per unit length of the fabric. If the length of the part A is not AA, the part A is the length AA, the part B is the length BB, and the part B is the length CC, the pitch becomes longer (the amplitude is The same holds true for the line segment length per unit length of the fabric, AA>BB> CC. Then, assuming that the discharge amount of the adhesive per unit time is 1 in the period a, the CPU 1800 sets the motor drive driver 1830 so that 1 × BB / AA in the period b and 1 × CC / AA in the period c. The rotational speed of the gear pump 1220 is controlled via

  That is, when the reciprocating speed of the application nozzle 1240 is reduced (when the pitch is increased) while the dough conveying speed is constant, the application nozzle 1240 is controlled to reduce the adhesive discharge amount of the gear pump 1220. It is controlled so that the thickness of the coating agent discharged from and formed on the cloth is constant. On the contrary, when the reciprocating speed of the application nozzle 1240 is increased (when the pitch is shortened) with the dough conveyance speed kept constant, the adhesive discharge amount of the gear pump 1220 is controlled to increase. The thickness of the coating agent discharged from the coating nozzle 1240 and formed on the fabric is controlled to be constant.

Next, the adhesive discharge amount control of the gear pump 1220 in the case where the adhesive is applied by changing the pitch of the adhesive pattern P by controlling the cloth conveyance speed while keeping the reciprocating speed of the application nozzle 1240 constant will be described. .
By controlling the conveyance speed of the fabric by the conveyance unit 1100, it is possible to repeatedly apply the adhesive at a short pitch in a portion with low stretchability, and repeatedly apply the adhesive at a long pitch in a portion with high stretchability. This is the same as the application nozzle reciprocating speed control. The same holds true for the line segment length per unit length of the fabric, with the relationship AA>BB> CC. Thus, even when the conveyance speed of the fabric is controlled to change the pitch, the adhesive discharge amount of the gear pump 1220 is controlled so that the thickness of the line segment of the adhesive forming the adhesive pattern P is the same. The

In this case, the conveyance speed for conveying the part A is low for the A part having a long line segment length per unit length of the fabric, and the conveyance for conveying the C part for the C part having a long line segment length. The speed is high. Therefore, the application time for applying the line segment of the A part is long and the application time for applying the line segment of the C part is short. For this reason, since the coating time is long even in the portion A where the line segment length per unit length of the fabric is long, the thickness of the line segment becomes thick unless the discharge amount per unit time from the coating nozzle 1240 is reduced. . On the other hand, since the coating time is short in the portion C where the line segment length per unit length of the fabric is short, the thickness of the line segment becomes thin unless the discharge amount per unit time from the coating nozzle 1240 is increased. The CPU 1800 controls the rotation speed of the gear pump 1220 via the motor drive driver 1830 so that the thickness of the line segment does not change in this way.

  That is, when the reciprocating speed of the application nozzle 1240 is constant, and the dough conveyance speed is reduced (when the pitch is shortened), the application nozzle 1240 is controlled to reduce the adhesive discharge amount of the gear pump 1220. It is controlled so that the thickness of the coating agent discharged from and formed on the cloth is constant. On the contrary, when the reciprocating speed of the application nozzle 1240 is constant and the conveyance speed of the fabric is increased (in the case of increasing the pitch), control is performed so that the adhesive discharge amount of the gear pump 1220 is increased. The thickness of the coating agent discharged from the coating nozzle 1240 and formed on the fabric is controlled to be constant.

In this way, the discharge amount of the adhesive from the application nozzle 1240 per unit time is controlled in conjunction with the application nozzle reciprocating speed control or the cloth conveyance speed control in which the repetition pitch of the adhesive application pattern is changed. Specifically, the discharge amount is controlled to decrease when the fabric conveyance speed decreases or the application nozzle reciprocation speed decreases.
Furthermore, even when the desired pitch is realized by controlling the reciprocating speed of the application nozzle 1240 and the conveyance speed of the fabric by the conveyance unit 1100, the amount of adhesive discharged from the application nozzle 1240 per unit time is controlled. And you may make it implement | achieve that the thickness of the coating agent formed in material | dough becomes constant.

[Operation]
Operation | movement of the coating device 1000 provided with the above structures is demonstrated. In the description of the operation, a case where an adhesive is applied to the armhole of the body in order to bond the sleeve of the undershirt to the body (this body includes a cloth double part) will be described as an example. In the description of this operation, first, the undershirt will be described.

-Undershirt of operation | movement object The front view of the undershirt 10 is shown in FIG. As shown in FIG. 9, this undershirt 10 has a body part 11 that is circularly knitted and left and right sleeve parts 12. The body part 11 and the sleeve part 12 are stretch knitted fabrics knitted separately, and as will be described later, the body part 11 and the sleeve part 12 are joined at the shoulder by a bonding structure using an adhesive. Thus, the entire undershirt 10 is formed.

  Here, the expansion / contraction direction of the undershirt 10 will be described. The body part 11 is the direction in which the horizontal direction in FIG. 9 is the course direction (relative to the wale direction) and is easy to expand and contract (easily stretches along the waist), and the sleeve part 12 is along the circumference of the arm. The course direction is the course direction (relative to the wale direction), and is the direction that is more easily expanded and contracted (easily stretched around the arm). The course direction means the same direction as the knitting direction in the horizontal knitted fabric, and the wale direction means a direction orthogonal to the course direction.

In the case of using the course direction as described above, the armhole of the body part 11 is difficult to expand and contract with respect to the arm periphery direction of the sleeve part 12 (details will be described later, but there is a difference in elasticity in the armhole). The direction around the arm is easy to expand and contract. In this case, when joining the sleeve portion 12 to the body portion 11 by general sewing, it is necessary to sew the body portion 11 which is difficult to stretch to the sleeve portion 12 which is easy to stretch, so that the arm of the sleeve portion 12 can be sewn. The length in the rotation direction is designed to be shorter than the arm hole of the body part 11. On the other hand, in the case of a bonded structure using an adhesive, which will be described later, if the arm-around direction length of the sleeve portion 12 is designed to be shorter than the arm hole of the body portion 11 in this manner, The direction length may be insufficient. For this reason, the arm portion direction length of the sleeve portion 12 is the same as the arm hole of the body portion 11 or is designed to be longer than the arm hole of the body portion 11. In addition, when using a horizontal knitted fabric for an undershirt, it is as above-mentioned, but when using a warp knitted fabric, a course direction and a wale direction are reverse to the case of a horizontal knitted fabric. Accordingly, the horizontal direction in FIG. 9 is the wale direction, and the direction orthogonal to the wale direction is the course direction.

  In addition, the body part 11 may join the front body and the back body by the bonding structure using an adhesive agent. Further, the sleeve 12 may be a circular knitted fabric knitted by a circular knitting machine as it is, or a knitted fabric knitted by a flat knitting machine or a circular knitting machine is cut, and then an adhesive is used. It may be joined in a cylindrical shape by a laminating structure using. The sleeve 12 in the undershirt 10 is assumed to be the latter.

In any case, the body part 11 and the left and right sleeve parts 12 knitted separately are bonded together with an adhesive and are not sewn. Furthermore, this undershirt 10 does not have any sewn part, and each part knitted separately is bonded by a bonding structure.
The upper part of the body part 11 and corresponding to the neck of the wearer is formed with a heel that is struck in a shallow U-shape as an opening, and is below the body part 11 and is the waist part of the wearer. The lower end portion of the body is formed as an opening in the portion corresponding to, and the cuff portion for taking out the hand as the opening is formed in the portion corresponding to the wrist portion of the wearer at the end portion of the sleeve portion 12. Has been. The ends of the fabrics in these openings are made of a fabric (stretchable knitted fabric that does not require peripheral processing) whose peripheral edge is cut off.

Furthermore, the characteristic structure of the undershirt 10 is demonstrated with reference to FIG. 10 and FIG. Here, FIG. 10 is a partially enlarged view of the left half of the undershirt 10, and FIG. 11 is a perspective view showing a wearing state of the undershirt 10.
As shown in these drawings, in this undershirt 10, the upper left and right ends of the body part 11 are provided with a bonding structure 112 using an adhesive in order to form a heel part, and the sleeve part 12 is a flat knitting machine. Alternatively, in order to cut a knitted fabric knitted by a circular knitting machine into a cylindrical shape, a bonding structure 120 using an adhesive is provided, and the body 11 and the sleeve 12 are joined at the shoulder. And a bonding structure 110 using an adhesive.

  These bonding structures 110, 112, and 120 basically have the same structure as described later. Among the bonding structures, the bonding structures 112 and 120 are linear, whereas the bonding structure 110 is characterized by being curvilinear and perimeter. Conventionally, an adhesive is used. Joining was impossible. The bonding structures 112 and 120 including the bonding structure 110 are realized by the bonding structure shown below. In the following, since the bonding structures 110, 112, and 120 have the same structure, the bonding structure 110 will be described.

The bonding structure 110 is a method of attaching a fabric by bonding a body part 11 (elastic fabric 1) and a sleeve 12 (elastic fabric 2), which are elastic fabrics, through an adhesive pattern P formed by an adhesive. It is a mating structure. With reference to FIG. 12 which shows the adhesion procedure of the body part 11 and the sleeve part 12, this bonding structure is demonstrated in detail. In FIG. 12, the body joint part of the sleeve part 12 is superimposed on the front side of the sleeve joint part of the body part 11 (the sleeve part 12 is on the upper side). It does not matter even if the garment joint part of the sleeve part 12 is overlapped on the back side (the garment part 11 is up).

  As shown in FIG. 12, the adhesive pattern P includes an adhesive portion 3 to which the stretchable fabric 1 and the stretchable fabric 2 are continuously bonded by forming an adhesive in a predetermined shape (zigzag shape in FIG. 12). The adhesive portion 3 is formed in a plan view so that the stretchable fabric 1 and the stretchable fabric 2 are not bonded by an adhesive, and the adhesive portion 3 and the nonbonded portion 4 are in a predetermined direction. (In FIG. 12, it is repeatedly provided in a direction having elasticity along the arm of the sleeve 12).

As described above, the adhesive pattern P is composed of the adhesive portion 3 and the non-adhesive portion 4, and the adhesive is bonded to the adhesive surfaces 1a of the stretchable fabric 1 and the stretchable fabric 2, as shown in FIG. It means the shape in plan view of the bonded portion that is thermally bonded to the surface 2a.
The bonding portion 3 is a portion formed by continuously repeating a predetermined shape (a zigzag shape in FIG. 12) in a predetermined direction (a direction having elasticity along the arm of the sleeve 12 in FIG. 12). is there.

  More specifically, in the case where the shape of the bonding pattern P is a zigzag shape, the bonding portion 3 has a minimum repeating unit U constituting the bonding portion 3 of “<” shape or “>” as shown in FIG. "<" Shape or ">" shape, which is the minimum repeating unit U, is a portion in which the stretchable fabric 1 and the stretchable fabric 2 are repeatedly and repeatedly arranged in a direction having stretchability. That is.

The zigzag shape shown in FIG. 12 repeats a predetermined zigzag amplitude (amplitude orthogonal to the stretchable direction of the fabric) and a predetermined zigzag pitch at a fixed period.
On the other hand, the non-adhesive part 4 is an opening formed by the adhesive part 3 in a plan view, and the stretchable fabric 1 and the stretchable fabric 2 are not bonded by an adhesive.
More specifically, the non-bonding portion 4 is the minimum repetition of the bonding portion 3 in each of the stretchable fabric 1 and the stretchable fabric 2 as shown in FIG. 12 when the shape of the adhesive pattern P is a zigzag shape. This is a portion where the adhesive fabric is not applied from the opening end of the “<” shape or “>” shape, which is the unit U, to the inner predetermined region, and the stretchable fabric 1 and the stretchable fabric 2 are not bonded.

Since the non-adhesive portion 4 is a region where the adhesive is not applied, the non-adhesive portion 4 becomes a stretchable portion that is not hindered by the adhesive even if the fabric is stretched in the stretchable direction.
Specifically, when the non-adhesive portion 4 is pulled in the direction in which the fabric is stretched, the non-adhesive portion 4 extends in a stretchable direction as a stretch, so that the stretch is not hindered by the adhesive.
When bonding the stretchable fabrics with the adhesive pattern P in a zigzag shape, the stretch force and stretchability of the stretchable fabrics can be controlled by changing the above-mentioned predetermined zigzag amplitude and the predetermined zigzag pitch. Can do.

In addition, when making the shape of the adhesion pattern P into a zigzag shape, the period is not particularly limited, and does not need to be a constant period as shown in FIG. The period of the zigzag shape may be appropriately determined depending on the fabric characteristics, the bonding position, the manufacturing conditions, and the like.
Further, the shape of the adhesive pattern P is not particularly limited to a zigzag shape, and various adhesive patterns P can be mentioned. Among various shapes of the adhesive pattern P, a zigzag shape or a curve shape is preferable. This is because the shape is easy to apply when applying (applying) the adhesive to the fabric. The adhesive pattern P applicable to the undershirt 10 is characterized in that it is not strip-like or planar but linear.

In addition, the number of repetitions of the bonding portion 3 and the non-bonding portion 4 constituting the bonding pattern P in a predetermined direction may be at least two times, and is not limited to the predetermined number. In addition, when applying to the bonding structure of the undershirt 10, it becomes the predetermined number of times according to the dimension.
Here, when the number of repetitions is 2, the adhesive pattern P is configured to be arranged in the order of the adhesive 3, the non-adhesive part 4, and the adhesive part 3, when the number of repetitions is 3 times or more. The adhesive pattern P has a configuration in which the adhesive part 3, the non-adhesive part 4, the adhesive part 3, the non-adhesive part 4,.

Furthermore, the arrangement pattern of the bonding part 3 and the non-bonding part 4 constituting the bonding pattern P is not particularly limited, and may be irregularly configured.
Although it does not specifically limit as an adhesive agent, For example, as above-mentioned, a thermoplastic resin is mentioned.
Examples of such thermoplastic resins include polyurethane hot melt resins, polyester hot melt resins, polyamide hot melt resins, EVA hot melt resins, polyolefin hot melt resins, styrene elastomer resins, and moisture curable urethane resins. A hot melt resin, a reactive hot melt resin, or the like is preferably used, and a reactive hot melt resin is particularly preferable. Reactive hot melt resin has high adhesive strength and can be bonded in a short time, so it has a curved line, such as bonding the entire armhole circumference in the body part and the entire arm circumference in the sleeve part, It is also suitably used in places where the bonded shape does not match.

  In the undershirt 10, after the buttock of the body part 11 is formed by the bonding structure 112, the bonding structure 110 is formed by applying and bonding an adhesive to the armhole with the bonding pattern P. At this time, the coating apparatus 1000 is used. In addition, it is also preferable to apply | coat an adhesive agent to the part of the bonding structures 112 and 120 using this coating device 1000. FIG. In addition, it is also preferable to apply an adhesive to the peripheral portion using the coating apparatus 1000 when the peripheral edge is folded and bonded as a peripheral processing instead of bonding the cloths of different parts.

  As shown in FIGS. 10 and 11, the armhole to which the adhesive is applied by the coating apparatus 1000 has a small part (A part), a middle part (B part), and a large part (C). Part), and there is a double part of the fabric by the bonding structure 112 in part D. The part A part is 1/6 of the armhole length from the D part to the front body side, the part B part is 1/6 of the armhole length from the immediately preceding A part to the armpit side, and the part C part is from the immediately preceding B part. Furthermore, 1/6 of the armhole length to the armpit side and then to the back body, the part C part is 1/6 of the armhole length from the armpit to the shoulder side, and the part B part is the armhole from the immediately preceding C part to the shoulder side. 1/6 of the length, the part A part is 1/6 of the armhole length from the immediately preceding B part to the shoulder side.

-Operation | movement of an application | coating apparatus The operation | movement which apply | coats an adhesive agent to the armhole of the undershirt 10 mentioned above with the application | coating apparatus 1000 which concerns on this Embodiment is demonstrated. It is assumed that calibration of the thickness detection sensor 1430 due to the difference in permeability depending on the type of fabric has been completed.

  First, the first nipping roller is at the preparation position (S (1)) and the application nozzle 1240 and the reciprocating movement unit 1300 are at the preparation position (Y (1)). , The fabric of the armhole is placed on the suction roller 1110, the operator moves the first clamping roller 1120 to the operating position (S (2)), and the fabric is set in the coating apparatus 1000. At this time, it is assumed that the vicinity of the portion A is set at the position of the transport table suction hole 1412, and the portion D is set in the vicinity of the suction roller 1110 on the downstream side in the material transport direction. In addition, when the adhesive is applied to the arm hole, the second clamping roller 1130 is not used, so the second clamping roller 1130 is always in the preparation position (U (1)).

  When the operator presses the start button, the application nozzle 1240 and the reciprocating unit 1300 are lowered to the operation position (Y (2)), and the suction roller 1110 and the first clamping roller 1120 are rotated in the direction indicated by the arrow R. The fabric is sucked from a part of the suction hole 1112 of the suction roller 1110 (a region indicated by the upper angle α) and the transport table suction hole 1412. While the fabric is sucked from the suction hole 1112 and the transport table suction hole 1412, the fabric is clamped by the suction roller 1110 and the first clamping roller 1120, and the fabric is transported in the arrow T direction. The state of the fabric at this time is shown as a body part 11 (1) by a one-dot chain line in FIGS.

  In this way, the conveyance starts while sucking the fabric, and at the same time, the coating unit 1200 discharges the adhesive from the coating nozzle 1240 to the fabric, and the reciprocating unit 1300 reciprocates the coating nozzle 1240 to form the pattern P. The In this way, the dough is conveyed in the direction indicated by the arrow T, the application nozzle 1240 is moved back and forth, and the adhesive is applied to the dough from the application nozzle 1240, whereby an adhesive pattern P as shown in FIG. 12 is formed. . In the case of an armhole, such an operation for forming the adhesive pattern P is performed over one turn of the armhole, and when the operator recognizes that the adhesive application operation has made one turn, the operator presses the stop button. Or press the start button again. As a result, in the coating apparatus 1000, the mechanism that was in the operating position stops at the preparation position (Y (1), S (1)), the rotating mechanism stops rotating, and the sucking mechanism stops sucking. To do. For stopping, the armhole was turned once by measuring the feed amount of the fabric or detecting a specific part by a sensor instead of pressing the button by the operator (end position of a series of coating operations). Can be automatically recognized, and the coating apparatus 1000 can be automatically stopped.

  At this time, as shown in FIG. 12, the adhesive pattern P is an adhesive in which the stretchable fabric 1 and the stretchable fabric 2 are continuously bonded by forming the adhesive in a predetermined shape (zigzag shape in FIG. 12). And a non-adhesive part 4 which is formed with an opening in a plan view by the adhesive part 3 and the stretchable fabric 1 and the stretchable fabric 2 are not bonded by an adhesive. The adhesive part 3 and the non-adhesive part 4 are It is repeatedly provided in a predetermined direction (in FIG. 12, the direction along the periphery of the arm hole in which the stretchability along the arm of the sleeve 12 changes).

  In this way, during the operation in which the adhesive is being applied to the armhole by the coating apparatus 1000, when the thickness detection sensor 1430 detects that the D part, which is a double part, has arrived, the D part reaches the application nozzle 1240. At a timing, the conveyance table 1410 is lowered by a predetermined distance (single dough) and controlled so that the clearance in the D portion, which is a double portion, becomes the same as that in the single dough. At the timing of passing 1240, the transport table 1410 is returned to its original position, and the clearance other than the single part D is maintained at a distance suitable for the single cloth.

Further, during the operation in which the adhesive is applied to the arm hole by the coating apparatus 1000 in this way, the arm hole part advances from the A part to the B part, the C part, the B part, and the A part, and makes one round of the arm hole. As shown in FIG. 10, since the stretchability of the fabric in the armhole is different, the adhesive is applied to the part B so that the crank motor 1310 rotates at a rotation speed of 100% during the period a in which the adhesive is applied to the part A. The crank motor 1310 rotates at a rotational speed of 50% during the period c during which the adhesive is applied to the part C so that the crank motor 1310 rotates at a rotational speed of 66.6% during the period b during which the coating is applied. To be controlled.

  If the reciprocating speed of the application nozzle 1240 is gradually reduced as the stretchability increases when the dough conveyance speed is constant, as shown in FIG. 10, the pitch that is the length of the repeating unit of the adhesive pattern P is shown. The period b (part B part) is 1.5 times and the period c (part C part) is twice the pitch of the period a (part A part). Here, the reciprocating speed of the application nozzle 1240 is reduced with the dough conveying speed kept constant. However, even if the reciprocating speed of the applying nozzle 1240 is made constant and the dough conveying speed is increased, the adhesive pattern P is similarly formed. The pitch that is the length of the repeating unit can be increased. Furthermore, the pitch which is the length of the repeating unit of the adhesive pattern P can be changed by controlling both the reciprocating speed of the application nozzle 1240 and the conveyance speed of the cloth.

  Further, during the operation in which the pitch which is the length of the repeating unit of the adhesive pattern P is changed in this way, the length of the line segment formed by the adhesive per unit length of the fabric (the length of the line segment) If the part A is a length AA, the part B is a length BB (<AA), and the part B is a length CC (<BB <AA) The discharge amount of the adhesive is set to 1 in the period a (part A part), 1 × BB / AA in the period b (part B part), and 1 × CC / AA in the period c (part C part). The rotation speed of gear pump 1220 is controlled.

  In this way, even if the conveyance speed of the dough is constant and the reciprocating speed of the application nozzle 1240 is lowered, the pitch becomes longer and the length of the line segment per unit length of the dough becomes shorter, the unit per unit time is accordingly reduced. Since the discharge amount of the adhesive gradually decreases, the thickness of the line segment forming the adhesive pattern P becomes the same as shown in FIG. Further, even if the reciprocating speed of the application nozzle 1240 is constant and the conveyance speed of the fabric is increased, the pitch becomes longer and the length of the line segment per unit length of the fabric becomes shorter, the adhesive per unit time is accordingly increased. Since the discharge amount gradually increases, the thickness of the line segment forming the adhesive pattern P is the same as shown in FIG.

In this manner, the coating apparatus 1000 uniformly applies the adhesive with the adhesive pattern P to the periphery of one circumference of the armhole with the same thickness and the pitch according to the stretchability.
In this way, the body part 11 and the sleeve part 12 to which the adhesive is applied by the coating apparatus 1000 are bonded by the bonding apparatus. In this case, as shown in FIG. 12, an adhesive is applied to the peripheral edge of the front side of the armhole without turning the undershirt 10 upside down, and the sleeve 12 is bonded to the upper side thereof. By doing in this way, even if the adhesion pattern protrudes to the end side with the coating device, even if the adhesion portion shifts with the adhesion device, it can be hidden by the sleeve portion 12 so that it cannot be seen from the table. Even if it protrudes to the opposite side of the end portion, it is preferable because the sleeve portion 12 is slightly overlapped and adhered so that it cannot be seen from the front.

As this bonding device, the thermoplastic resin (adhesive) interposed between the stretchable fabrics is melted by heating and pressurizing from the outside of the fabric to melt, and the stretchable fabrics are joined by cooling and solidification. To do. Examples of such a bonding apparatus include a hot press machine and an iron. More specifically, in the bonding apparatus, the adhesive surfaces 1a and 2a of the stretchable fabric 1 and the stretchable fabric 2 are put together so that the heat of the predetermined adhesive pattern P is between the stretchable fabric 1 and the stretchable fabric 2. A thermoplastic resin is interposed between the stretchable fabric 1 and the stretchable fabric 2 and melted by heating and pressurizing the thermoplastic resin from the outside of the fabric. Then, the stretchable fabric 1 and the stretchable fabric 2 are fixed by cooling and solidification.

  In this way, the bonding pattern P intervening between the stretchable materials can be formed in a zigzag shape, and a fabric bonding structure capable of controlling the stretch force and stretchability of the stretchable materials can be realized. By finishing the bonded portion very thinly compared to stitching, it is possible to realize an undershirt 10 that is comfortable to touch and does not resonate with the outer.

  As described above, according to the coating apparatus 1000 according to the present embodiment, when the breathable materials having the stretchability of the fabric are bonded to each other through the adhesive, the fabric or the like is secured while ensuring the adhesive strength. The adhesive can be applied to the fabric in an adhesive pattern that can be bonded without hindering the stretchability provided. In particular, since the adhesive pattern pitch was changed according to the stretchability of the fabric, and the adhesive discharge amount was changed so that the thickness of the line segment of the adhesive pattern would be the same according to the variable pitch. In addition, the adhesive can be uniformly applied to the portions having different stretchability. Even if the thicknesses of the doughs are different, the clearance between the dough and the application nozzle is maintained at a constant distance, so that the adhesion pattern is not disturbed.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
In the present embodiment, for example, the following modifications can be considered. In any of the following modified examples, by adding the following mechanism having a desired function to the coating apparatus 1000, the adhesive can be applied to the fabric with higher accuracy.

(1) Edge controller In the coating device 1000 described above, it is necessary to apply an adhesive to the end portion of the armhole without disturbing the adhesive pattern. In this case, if the positional relationship between the fabric end (edge) and the application nozzle 1240 is not correct, it is difficult to apply the adhesive without disturbing the adhesive pattern. That is, it is necessary to keep the end portion of the fabric in contact with the regulation plate 1414 at all times. Normally, for this purpose, the operator visually confirms the edge of the fabric and manually operates the fabric feeding state (shakes the fabric to the left and right). However, the edge control performance differs depending on the skill level of the operator, and the adhesion pattern may be disturbed, which in turn may vary the quality of the undershirt.

  In order to avoid such variations in quality due to the operator, an edge controller that adjusts the entry / exit in the direction perpendicular to the traveling direction of the fabric is provided upstream of the application nozzle 1240 in the fabric conveyance direction. As this edge controller, it is preferable to apply a main rotor adjustment mechanism applied to the fabric edge processing apparatus disclosed in Japanese Patent Application Laid-Open No. 2010-259626.

(2) Holding part of cylindrical cloth When the adhesive is applied to the arm hole in the coating apparatus 1000 described above, the body part 11 on the non-application side hangs down in the W region of FIG. The body part 11 that hangs down is subjected to weight and pulls the fabric away from the regulating plate 1414. In addition, the hanging body part 11 does not rotate, but the armhole rotates to apply the adhesive, so that twisting occurs and the fabric is pulled away from the regulating plate 1414. In this way, when doughing is not preferred, the bonding pattern may be disturbed, and the quality of the undershirt may vary accordingly. Such a problem becomes conspicuous when an adhesive is applied to one end of the cylindrical object.

  In order to avoid such inconveniences, when the fabric has at least a cylindrical portion, and an adhesive is applied to the end of the cylindrical portion, the opposite side of the end of the cylindrical portion is A rotation holding portion that holds and rotates in conjunction with the conveyance of the end portion to which the adhesive is applied is provided in the W region. By this rotation holding portion, the end portion side where the adhesive is not applied is also held and rotated, so that the fabric can be satisfactorily spread.

  The present invention, when adhering breathable materials having elasticity such as films, webs, fabrics, etc., through an adhesive, adheres without hindering the elasticity provided by the fabrics, etc. while ensuring the adhesive strength. The present invention can be used in an adhesive application device.

10 Undershirt 11 Body (Elastic fabric 1)
12 Sleeve (elastic fabric 2)
3 Adhering part 4 Non-adhering part 110, 112, 120 Bonding structure P Adhesive pattern 1000 Coating device 1100 Conveying part 1110 Suction roller 1112 Suction hole 1120 First sandwiching roller 1122 First drive belt 1124 First arm 1130 Second sandwiching roller 1132 Second drive belt 1134 Second arm 1140 Conveyance drive motor 1142 Drive belt 1150 Nipping drive motor 1200 Application unit 1210 Adhesive storage unit 1220 Gear pump motor 1230 Gear pump 1240 Application nozzle 1300 Reciprocating movement unit 1310 Crank motor 1320 Crank mechanism 1330 Nozzle holder 1340 Holder Stay 1350 Retracting air cylinder 1400 Separation moving part 1410 Conveying base 1412 Conveying base suction hole 1414 Restricting plate 1420 Separating air Cylinder 1430 thickness detection sensor 1500 controller 1510 control panel 1520 operation button 1530 displayed instrument 1540 touch panel 1600 compressor 1710 frame 1720 casters 1730 adjuster

Claims (10)

Conveying means for conveying a material in which parts having different elasticity are distributed in a direction parallel to the conveying direction, a conveying table that supports the material being conveyed, and the conveying table facing the conveying table And an application nozzle for applying the coating agent to the material in a non-contact manner,
A reciprocating means for reciprocating at least one of the conveying table and the application nozzle in a direction different from the conveying direction of the material;
And wherein the changing in response to the elastic recurring unit length of coating material formed by pre-Symbol reciprocation, the coating apparatus. A sensor for measuring the thickness of the material provided on the upstream side of the application nozzle in the conveying direction of the material;
Based on the measured thickness, moving means for separating / adjacent at least one of the transport table and the application nozzle;
The coating apparatus according to claim 1, further comprising: A suction unit provided on the transport table and configured to suck a part of the material;
3. The coating apparatus according to claim 1, wherein the suction unit sucks a suction area overlapping with an application area by the application nozzle or a suction area in the vicinity of the application area. The conveying means is
At least one transport roller provided on the downstream side of the coating nozzle in the transport direction of the material;
Drive means for driving the transport roller;
Including
The coating apparatus according to claim 1, wherein the material is sucked by a part of the transport roller.   The coating apparatus according to any one of claims 1 to 4, wherein the reciprocating means reciprocates in a direction orthogonal to a conveying direction of the material. For a portion having different stretchability in the material, further includes a control unit that controls the transport speed of the material by the transport means according to the stretchability,
The control unit may repeat unit length of coating material formed by pre-Symbol reciprocating movement, short at the site the stretch is small, and changes to be longer in the site the stretch is greater The coating apparatus according to any one of claims 1 to 5. A control unit that controls the reciprocating speed of the reciprocating means according to the stretchability for a portion having different stretchability in the material,
The control unit may repeat unit length of coating material formed by pre-Symbol reciprocating movement, short at the site the stretch is small, and changes to be longer in the site the stretch is greater The coating apparatus according to any one of claims 1 to 5.   The said control part controls the discharge amount per unit time of the coating agent from the said coating nozzle, when the said conveyance speed or the said reciprocation speed is changed, The Claim 6 or Claim 7 characterized by the above-mentioned. The coating apparatus as described.   9. The coating apparatus according to claim 8, wherein the control unit controls the thickness of the coating agent that is discharged from the coating nozzle and formed on the material to be constant. The material includes at least a cylindrical portion, and the coating agent is applied to an end portion of the cylindrical portion,
The rotary holding part which hold | maintains the other side of the said edge part in the said cylindrical part, and rotates in response to the said edge part being conveyed is further included, The Claims 1-9 characterized by the above-mentioned. The coating apparatus in any one.

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