JPH0423003B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention applies to objects to be adhered such as fabrics for sewing clothes, etc.
The present invention relates to a tape bonding device that automatically supplies adhesive-coated tape and bonds the same.

[Prior Art] Conventionally, in fabrics for sewing clothes such as blazers,
When gluing tape to reinforce lapel folds or gluing shoulder tape, cut the tape coated with adhesive to a specified length, align it to the fabric, and then use an iron. It was then manually glued and fixed.

[Problem to be solved by the invention] However, in the taping operation,
The series of operations that include cutting the tape to a fixed size, positioning it, and heating it with an iron require skill on the part of the operator.
Therefore, there is a problem in that it is not possible to improve productivity while maintaining a certain level of quality if relying on manual labor.Therefore, a tape bonding device that can automatically apply tape to objects to be bonded is needed. is required.

An object of the present invention is to automatically supply a tape to an object to be adhered in a tape bonding apparatus as described above,
Moreover, it is an object of the present invention to provide a tape bonding device equipped with a tape pull-back mechanism that can accurately and reliably position the free end of the tape at a predetermined position on an object to be bonded by adjusting the length of the tape.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a pedestal on which an object to be adhered is placed, and a tape coated with an adhesive is supplied to the object to be adhered on the pedestal. A tape bonding device comprising: a tape feeding device that presses the tape onto an object to be bonded on a pedestal; and a bonding tool that has a pressing portion that presses the tape against an object to be bonded on a pedestal, and that generates adhesive force of the adhesive in response to the pressure. The device includes a tape holder for storing a tape T, a tape feeding means for feeding the tape T from the tape holder toward the adhesive tool, and a tape feeder that feeds the tape T from the tape holder toward the adhesive tool, and a tape feeder that is arranged between two predetermined positions on a tape introduction side and a tape output side of the adhesive tool. a tape gripping tool that is provided to be reciprocally movable along the pressing portion of the adhesive tool and capable of gripping and releasing a portion of the tape at each position; By reciprocating the tape gripping tool between the two positions, the tape is held so that the free end of the tape extends further toward the outlet side than the outlet side end of the pressing part. A gripper driving means disposed between the adhesive tool and the pedestal, and before the adhesive tool presses the tape, grips the excess portion of the tape so that the free end of the tape coincides with the tape lead-out side end of the pressing part. and a tape return means for pulling back the tape to the tape holder side.

[Operation] In an initial state in which the pedestal and the bonding tool are separated from each other and the object to be bonded is placed on the pedestal, the tape feeding means feeds out the tape from the tape holder to the tape introduction side position of the bonding tool. .

When the gripper is disposed at a predetermined position on the tape outlet side, the gripper driving means reciprocates the gripper to the tape introduction side position and grips the free end of the tape that has been fed out at this position.

The gripping tool driving means drives the gripping tool that grips the tape.
By moving the adhesive tool back and forth along the pressing part from the tape introducing side position to the tape leading side position and releasing the tape at the tape leading side position, a length of tape longer than the length to be glued is attached so that its free end is on the pressing part. It is arranged between the pedestal and the bonding tool in a state where it extends further toward the lead-out side than the lead-out side end.

The tape returning means pulls back the excess tape toward the tape holder, and aligns the free end of the tape with the end on the tape outlet side of the pressing section. After the tape length is adjusted in this way, the adhesive tool presses the tape and the object to be adhered on the receiving table.

[Example] An example embodying the present invention will be described below with reference to the drawings.

(Basic configuration of adhesive mechanism) As shown in Figures 1 and 2, on the front lower part of the main body frame 1 of the tape adhesive device, there is a pedestal on which an object W made of fabric such as the front body of clothing can be placed. An anvil 7 is provided. Guide members 7a extending vertically are attached to both sides of the upper end of the anvil 7, respectively. Also, a pair of regulating parts 9 are attached to both side walls of the lower end of the main body frame 1, and by engaging both guide members 7a between the respective regulating parts 9, the anvil 7 is attached to the main body frame 1 in the vertical direction. It is slidably supported.

As shown in FIGS. 1 and 4, a pair of upper links 10 are supported on both sides of the lower end of the anvil 7 so as to be rotatable around a horizontal axis, and the lower ends of both upper links 10 are parallel to the rotational axis. Connecting shaft 1 extending to
1. On the other hand, a shaft 14 parallel to the connecting shaft 11 is mounted between a pair of support frames 12 provided at a constant interval from side to side on the lower front side of the main body frame 1. Link 13
is rotatably mounted at one end thereof, and the other ends of both lower links 13 are rotatably connected to the connecting shaft 11, respectively.

Further, as shown in FIG. 4, an anvil driving air cylinder 15 is provided within the main body frame 1. A connecting tool 16 is rotatably attached to the connecting shaft 11 between the pair of lower links 13, and the piston of the anvil driving air cylinder 15 is connected to the connecting shaft 11 via this connecting tool 16.
is connected to. When the piston of the air cylinder 15 is projected, both the upper and lower links 10 and 13 are placed on a vertical line, and the anvil 7 is placed in a use position where the object to be adhered W is placed on the back side of the tape-bonded portion. Further, when the piston of the air cylinder 15 is retracted, the connecting shaft 11 is drawn toward the air cylinder 15, and the upper link 10
Then, the lower link 13 is bent around the connecting shaft 11, and as a result, the anvil 7 is moved downward from the use position and placed in the non-use position.

Above the anvil 7, an object W to be adhered is placed in a horizontal plane and held by a support clamp C (see FIG. 7) with at least the tape bonded portion exposed. As shown in FIG. 7a, this support clamp C has an opening Ch through which the anvil 7 can enter, and a support plate Ca that removably supports the object W to be adhered, and a support plate Ca that supports the peripheral edge of the object W to be adhered. It includes a presser frame Cb that presses and holds onto the plate Ca.
Then, this support clamp C is moved within the support surface of the adherend W by a clamp feeding device (not shown), moves away from the anvil 7 laterally, and reaches a mounting position where the adherend W is attached/detached; The attachment position is switched to a conveyance position where the adherend W held at the mounting position is placed at a fixed position above the anvil 7. Therefore, with respect to the support clamp C arranged in the transport position, the anvil 7 is closest to the support clamp C in the use position and is separated from the support clamp C in the non-use position.

Now, a pair of guide rails 2 are provided on the front surface of the main body frame 1 of the tape bonding device, and extend parallel to each other along the vertical direction. movably supported. An ultrasonic vibrator 4 is provided on the elevating body 3, and an ultrasonic horn 5 attached to the ultrasonic vibrating device 4 projects below the elevating body 3. The lower end of the ultrasonic horn 5 is provided with a pressing part 5a having a width and length corresponding to the shape of the tape to be adhered, and whose lower surface is formed as a smooth pressing surface. It faces the upper surface of the anvil 7. Note that the ultrasonic vibration device 4 and the ultrasonic horn 5 constitute a bonding tool.

As shown in FIG. 4, a horn pressurized air cylinder 6 is disposed in the upper part of the body frame 1, and the piston tip of the air cylinder 6 is connected to the rear end 3a of the elevating body 3. Then, in accordance with the operation of the air cylinder 6, the ultrasonic vibration device 4 and the ultrasonic horn 5 are moved up and down together with the elevating body 3, and the pressing part 5
a is moved upward and separated from the anvil 7, and a pressing part 5a is moved downward and the tape T and the object W to be adhered W, which will be described later, are moved to the anvil 7.
It is arranged to switch between the pressing position and the pressing position.

A stopper 18 is rotatably supported within the main body frame 1 by a support shaft 17, and this stopper 18 is operated by a stopper actuating air cylinder 19 disposed within the main body frame 1, as indicated by the solid line in FIG. It is switched between the non-operating position shown and the working position shown by the two-dot chain line. When the stopper 18 is placed in the operating position, the rear end 3a of the elevating body 3 that moves downward toward the anvil 7 engages with the upper end of the stopper 18, and the downward movement of the elevating body 3 to the pressing position is prevented. It is stopped at an intermediate position, and a slight gap is maintained between the pressing portion 5a of the ultrasonic horn 5 and the upper surface of the anvil 7.
When the stopper 18 is retracted to the inactive position based on the operation of the stopper operating air cylinder 19, the ultrasonic horn 5 is moved to the horn pressurizing air cylinder 6.
Based on the operation of , it further moves downward and reaches the pressing position, comes into contact with the anvil 7, and then pressurizes the upper surface of the anvil 7.

(Tape Supply Mechanism) As shown in FIGS. 1 to 3, a tape holder 20 is rotatably supported on an upper support arm 21 protruding from the side of the main body frame 1. An adhesive tape T coated with a thermoplastic adhesive on one side is wound and stored. A swing lever 22 is rotatably mounted on the pivot shaft 20a of the tape holder 20, and a slack absorbing roller 23 is rotatably attached to the tip thereof. Further, a pair of rollers 24 and 25 are rotatably attached to the upper support arm 21 so as to narrow the rotation locus of the slack absorbing roller 23 about the rotation shaft 20a.

On the other hand, a servo motor 28 having an output shaft capable of forward and reverse rotation is attached to a lower support arm 26 protruding from the side of the main body frame 1, and a feed roller 27 is attached to the output shaft. At the same time, its output shaft is arranged parallel to the rotating shaft 20a of the tape holder 20. Further, a press lever 30 is rotatably supported on a support shaft 29 provided on the lower support arm 26, and a press roller 31 is rotatably attached to the tip thereof. Then, due to the action of the spring 32 wound around the support shaft 29, the pressing lever 3
0 pressure roller 31 is pressed against the feed roller 27.

Further, as shown in FIG. 1, the feed roller 2
A tape introducing member 33 made of a pair of parallel plate members is disposed below the tape member 7 . And tape T
As shown in FIG. 7d, after passing through the rollers 25, slack absorbing rollers 23, and rollers 24 and being pressed against the feed roller 27 by the pressure roller 31, the tape is inserted into the tape introduction member 33, and this tape introduction member Member 33
The introduction position is regulated by In this state, the feed roller 27 is rotated in a predetermined direction by the servo motor 28, so that the tape T is fed out to the pressing portion 5a. Further, when slack occurs when the tape T is fed out, the slack absorbing roller 23 moves downward to detour the tape T onto a path that shoots the rollers 25, slack absorbing rollers 23, and rollers 24 to absorb the slack. Note that the feed roller 27, the servo motor 28, and the pressure roller 31 constitute a tape feeding means and a tape returning means.

As shown in FIGS. 1, 4 and 5, at the rear of the lower part of the ultrasonic horn 5, a movable holder 38 is supported on the main body frame 1 by a support frame 48 so as to be able to reciprocate in the left and right direction, and the ultrasonic horn A rodless type clamp moving air cylinder 37 extending laterally longer than the left and right width of the press 5a of No. 5 is supported horizontally, and based on the operation of this air cylinder 37,
The movable holder 38 is reciprocated between a tape introducing side position corresponding to the right end position of the air cylinder 37 and a tape leading side position corresponding to the left end position of the air cylinder 37.

A tape clamp 34 as a tape gripping tool is provided on the movable holder 38 so as to be able to reciprocate along the pressing portion 5a between the ultrasonic horn 5 and the anvil 7 which are spaced apart from each other. Fifth
As shown in the figure, the tape clamp 34 is attached to the fixed claw 3.
5 and a movable claw 36 rotatably supported at the center of the fixed claw 35. A coil spring 40 is interposed between the base end of the fixed claw 35 and the rear end of the movable claw 36, and the action of this coil spring 40 biases the tip of the movable claw 36 against the tip of the fixed claw 35. has been done.

On the other hand, as shown in FIGS. 1 and 3, a clamp opening/closing air cylinder 39 is provided at the lower end of the mounting plate 49 on the left side of the main body frame 1 and the lower end of the lower support arm 26 on the right side of the main body frame 1, respectively.
The tip of the piston of each left and right clamp opening/closing air cylinder 39 is connected to a protrusion 3 provided at the center of the movable claw 36 on the movable holder 38 when the movable holder 38 is placed at the tape lead-out side or the tape introduction side position.
It is arranged opposite to the tip of 6a. Then, when the corresponding air cylinder 39 is activated and the piston is protruded with the protruding piece 36a of the movable claw 36 facing the piston of one of the clamp opening/closing air cylinders 39, the movable claw 36 is attached to the coil spring 40. When the piston is rotated toward the release side against the force and separated from the fixed claw 35, and the piston is retracted, the movable claw 36
is rotated toward the gripping side by the biasing force of the coil spring 40 and comes into contact with the fixed claw 35 . Note that the clamp moving air cylinder 37, the moving holder 38, and the clamp opening/closing air cylinder 39 constitute a gripper driving means.

Now, as shown in FIGS. 1 and 6, a pair of tape guides 43 extending along the left-right direction of the pressing part 5a are provided on both front and rear sides of the pressing part 5a of the ultrasonic horn 5, so that the tape guides 43 are positioned relative to the pressing part 5a. It is arranged so that it can move up and down. That is, as shown in FIGS. 4 and 6, holding arms 41a and 4 are provided on both sides of the lower part of the elevating body 3, respectively.
1b (only one is shown), and a support pin 42 extending vertically is fixed to the side surface of each holding arm 41a, 41b via a bracket 46.
Each support pin 42 has an upper insertion hole 45a provided near its upper end and center.
A pair of guide pins 44 are vertically spaced apart and project from the lower end of each suspension member 45. The tape guide 43 is installed between the left and right guide pins 44.

Further, a coil spring 47 is interposed between each support pin 42 between each bracket 46 and the center portion of each suspension member 45 to bias the tape guide 43 downward. As shown in FIG. 6, when the ultrasonic horn 5 is placed in the standby position, each suspension member 4 is
The upper end portion of each suspension member 45 is locked to the upper surface of the bracket 46, and the center portion of each suspension member 45 is secured to the support pin 42.
is locked by a locking part 42a provided at the lower end of the
The lower edge of each tape guide 43 is arranged below the lower surface of the ultrasonic horn 5 by a predetermined distance h (3 mm in this embodiment).

On the other hand, when the ultrasonic horn 5 is lowered to the pressing position, the tape guide 43 is lower than the ultrasonic horn 5.
contacts the anvil 7 first and is stopped from descending.
From this state, the tape guide 43 is kept in contact with the anvil 7 by the action of the coil spring 47 until the ultrasonic horn 5 is further lowered to contact the anvil 7 and then raised again to return to the above state. remain connected.

(Tape cutting mechanism) As shown in Figures 1 and 6, the right holding arm 4
A knife receiving rubber 52 is attached to the tip of the downwardly extending portion 1a. Further, the lower support arm 26 is provided with a tape cutting air cylinder 50 extending obliquely, and a knife 51 for cutting the tape T in cooperation with the knife receiving rubber 52 is attached to the tip of the piston. has been done. When the elevating body 3 moves downward and the ultrasonic horn 5 is placed in the pressing position, the knife receiving rubber 52 on the holding arm 41a
is arranged on the retracting path of the piston of the tape cutting air cylinder 50, so that the knife 51 comes into contact with the knife receiving rubber 52 when the piston protrudes.

Next, the operation of the tape bonding device constructed as described above will be explained with reference to FIGS. 7a to 7f.

As shown in FIG. 7a, at the start of the tape bonding operation, the ultrasonic horn 5 is placed in the standby position, the support clamp C is placed in the transport position, and the anvil 7 is placed in the use position. Ru. and,
The upper end of the anvil 7 enters the opening Ch of the support clamp C, and the adherend W is placed on the anvil 7. Further, the tape clamp 34 is arranged at the tape lead-out side position. On the other hand, the tape T passes through the rollers 25, 23, 24 from the tape holder 20, is held between the feed roller 27 and the pressing roller 31, and is then inserted into the tape introduction member 33.
The free end of the tape T slightly protrudes from the lower side thereof and is disposed at a position on the tape introduction side of the pressing portion 5a.

From the state shown in FIG. 7a, the tape clamp 34 is moved together with the moving holder 38 to the tape introducing side position based on the operation of the clamp moving air cylinder 37.
Then, based on the operation of the right-hand clamp opening/closing air cylinder 39, the ends of the fixed claw 35 and the movable claw 36 are opened and closed, and after the free end of the tape T is sandwiched between them 35 and 36, as shown in FIG. 7b. As shown, the tape clamp 34 is moved to the tape delivery side position based on the operation of the clamp moving air cylinder 37.

In synchronization with the movement of the tape clamp 34, the servo motor 28 rotates the feed roller 27 in the feeding direction, and prevents the tape T from becoming loose or under excessive tension between the tape clamp 34 and the feed roller 27. Supply T. Then, as shown in FIG. 7b, the tape T is tightened by the tape clamp 34.
The free end of the pressing part 5a extends further toward the leading-out side than the leading-out end of the pressing part 5a, and a tape T having a length longer than that to be bonded is pulled out and stretched between the pressing part 5a and the anvil 7. .

Subsequently, as shown in FIG. 7c, the ultrasonic horn 5 and the like are moved down together with the elevating body 3 based on the operation of the horn pressurized air cylinder 6, and the tape is stretched between the tape introducing member 33 and the tape clamp 34. Tape T
The lower surface of the pressing portion 5a comes into contact with this. At this time,
The tape guides 43 are arranged on both sides in the width direction so that the tape T does not protrude from the contact surface with the pressing portion 5a. Further, the servo motor 28 is driven in synchronization with the downward movement of the ultrasonic horn 5, and a predetermined amount of tape T is sent out by the feed roller 27. When the rear end 3a of the elevating body 3 is engaged with the stopper 18 which has been placed in the operating position, the horn pressurizing air cylinder 6 is stopped and the seventh
As shown in FIG. c, the lower edge of the tape guide 43 is in slight contact with the upper surface of the adherend W, and the descent of the ultrasonic horn 5 is temporarily stopped.

Next, as shown in FIG. 7d, the free end of the tape T is released from the tape clamp 34 based on the operation of the left clamp opening/closing air cylinder 39. Then, when the servo motor 28 is driven in the reverse direction and the feed roller 27 is rotated in the return direction, and a predetermined amount of tape T is pulled back, the leading end of the tape T matches the end of the pressing section 5a on the tape delivery side. When pulling back the tape, the tape guide 43 restricts both ends of the tape T in the width direction so that the tape T does not shift from the pressing position of the pressing part 5a in the tape width direction. Placed accurately and reliably on the part to be adhered. Also, as the tape T is pulled back, the feed roller 27 and tape holder 20
When the tape T becomes slack between the two, the slack absorbing roller 23 moves downward to absorb the slack.

After the excess tape T is pulled back, the stopper 18 is activated based on the operation of the stopper actuating air cylinder 19.
When the lever is switched from the working position to the non-working position, the rear end 3a of the elevating body 3 and the stopper 18 are disengaged. Thereafter, as shown in FIG. 7e, when the horn pressurized air cylinder 6 is operated again and the elevating body 3 is further moved down, the tape guide 43 remains in contact with the adherend W, and the pressing portion 5a The lower surface of is pressed against the adherend W.

When the ultrasonic vibrating device 4 is operated in this pressing state, frictional heat is generated due to friction due to ultrasonic vibration between the pressing part 5a of the ultrasonic horn 5 and the tape T, and the heat applied to the tape T is generated. The plastic adhesive is heated and melted to generate adhesive force. Further, the tape T is reliably bonded to the object W by the ironing effect caused by pressing the tape T against the object W between the anvil 7 and the ultrasonic horn 5.

After maintaining the above-described pressing state for a predetermined time, as shown in FIG.
The tape T extending from the tape introduction side to the tape introduction member 33 is cut by the cooperation of the knife 51 and the knife receiving rubber 52 at a position very close to the tape introduction side end of the pressing portion 5a.

After cutting the tape, the piston of the tape cutting air cylinder 50 is returned from the protruding state. Further, the ultrasonic horn 5 is returned from the pressing position to the standby position together with the elevating body 3, and as the pressing part 5a releases the pressing against the adhered object W, the tape guide 43 is moved by the action of the coil spring 47 as shown in FIG. The state will be restored. After the elevating body 3 is returned to the standby position, the stopper 18 is returned to the operating position.
On the other hand, after the anvil 7 is placed in a non-use position based on the operation of the anvil drive air cylinder 15, the support clamp C is transferred from the conveying position to the mounting position by the clamp feeding device, completing a series of bonding processes. .

In this way, according to this embodiment, the support clamp C
Not only can the tape T be automatically supplied from the tape holder 20 to a predetermined position on the adherend W attached to the tape holder 20, but also the tape length can be adjusted by pulling back the excess tape T once supplied. , its free end can be precisely positioned in a predetermined position. Therefore, by using the apparatus of this embodiment, the tape attachment work can be performed more quickly and reliably than in the past.

[Effects of the Invention] As detailed above, according to the present invention, the tape is automatically supplied to the object to be adhered, and the length of the tape can be adjusted, so that the tape can be placed at a predetermined position on the object to be adhered. This provides an excellent effect in that the free end of the tape can be placed accurately and reliably.

[Brief explanation of drawings]

Fig. 1 is a front view of a tape bonding device embodying the present invention, Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is a sectional view taken along line A-A in Fig. 1, and Fig.
The figures are a cross-sectional view taken along the line B--B of FIG. 1, FIG. 6 is a partially broken enlarged view of the pressing part, and FIGS. 4... Ultrasonic vibrator, 5... Ultrasonic horn (a bonding tool is configured by the above 4 and 5), 5a
... Pressing part, 7 ... Anvil as a pedestal, 2
0...Tape holder, 27...Feed roller, 2
8...Servo motor, 31...Press roller (27, 28, and 31 constitute the tape feeding means and tape return means), 34...Tape clamp as a tape gripping tool, 37...Clamp driving air cylinder , 38... movable holder, 39
...Clamp opening/closing air cylinder (37, 3 above)
8 and 39 constitute a gripper driving means),
T...tape, W...object to be adhered.

Claims (1)

[Scope of Claims] 1. A pedestal 7 on which an object to be adhered W is placed, a tape supply device that supplies tape T coated with adhesive to the object W on the pedestal 7, and a pedestal. In the tape bonding device, the tape bonding device has a pressing portion 5a that presses the tape T against the adhered object W on the tape bonding device W, and bonding tools 4 and 5 that generate adhesive force of the adhesive during the pressing. The tape holder 20 stores the tape T, and the adhesive tool 4 is connected from the tape holder 20 to the adhesive tool 4.
tape feeding members 27, 28, 31 that feed out the tape T toward the adhesive tool 4, 5 between two predetermined positions on the tape introduction side and the tape outlet side of the adhesive tool 4, 5;
A tape gripping tool 34 is provided to be reciprocally movable along the pressing portion 5a of the tape T and can grip and release a portion of the tape T at each position, and the tape gripping tool 34 is gripped and released at each of the positions. At the same time, by reciprocating the tape gripping tool 34 between both positions, the tape T having a length longer than that to be bonded is extended so that the free end of the tape extends further toward the outlet side than the outlet side end of the pressing part 5a. gripper driving means 37, 38, 39 disposed between the adhesive tools 4, 5 and the pedestal 7 so that the free end of the tape touches the pressing portion before the adhesive tools 4, 5 press the tape; A tape equipped with a tape pull-back mechanism, characterized in that the tape includes tape return means 27, 28, and 31 for pulling back the surplus portion of the tape T to the tape holder 20 side so as to coincide with the tape lead-out side end of 5a. Gluing device.