JP3053564B2 - Wrap material sticking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for attaching a wrap material to a conveyed work.

[0002]

2. Description of the Related Art As a device for sticking a wrapping material to a work, a work transfer mechanism for transferring the work, a wrapping material supply mechanism for supplying the wrapping material along the transfer direction of the work,
There is one provided with a plurality of sticking rolls which can be brought into contact with a work and which are arranged along a conveying direction of the work.
When the wrap material is supplied according to the work to be transported,
The wrapping material is adhered while being gradually deformed by each attaching roll so as to follow the shape of the work while sequentially passing between the workpiece and each attaching roll.

[0003]

In such a sticking apparatus, the sticking roll waits at a position close to the work transfer area so that the wrapping material can be pressed against the work. The work comes into contact with the outer peripheral surface tangentially. However, if the position of the work is shifted to the sticking roll side, the leading edge of the work collides with the outer peripheral surface of the sticking roll, and in this case, the sticking of the wrapping material to the work becomes satisfactory. Not only is it not performed, but an excessive load acts on the work, the sticking roll, the support member of the sticking roll, and the like.

The present invention has been made in view of the above circumstances, and has as its object to prevent a work from colliding with a sticking roll.

[0005]

According to a first aspect of the present invention, there is provided a work transfer mechanism for transferring a work, a wrap material supply mechanism for supplying a wrap material along a work transfer direction, and the wrap material for the work. pressing direction against the pressing possible even with arranged is Rutotomoni workpiece along the conveying direction of the workpiece to the
A plurality of different sticking rolls, wherein the wrapping material is deformed according to the shape of the work by the plurality of sticking rolls and is attached to the outer surface of the work. Thus , provided for each of the sticking rolls,
A driving mechanism capable of displacing the adhering roll in a direction of coming and going with respect to the work, a sensor for detecting the work to be conveyed, and the work transfer based on a detection signal from the sensor.
Outputs pulse signals according to the rotation speed of the motor of the feeding mechanism
Encoder and the pulse signal from this encoder
When a predetermined number set for each drive mechanism is reached,
And control means for operating the structure at a separate timing, a plurality of sticking roll, conveying the workpiece timing
In that it is sequentially displaced from a position that does not interfere with the workpiece to a position that presses the outer surface of the leading edge in accordance with the workpiece.

A second aspect of the present invention is characterized in that, in the first aspect of the present invention, the driving mechanism is constituted by an air cylinder.

[0007]

According to the first aspect of the present invention, when the work to be conveyed is detected by the sensor, the drive mechanism operates in accordance with the position of the work, and the position where the sticking roll does not interfere with the work. To the position where the outer surface of the work is pressed. The adhering roll can be displaced to a position where it presses on the outer surface of the tip of the work according to the work transfer timing instead of waiting at a position where the work can be pressed in advance, preventing the collision of the work with the adhering roll. can do.

According to the second aspect of the present invention, since the air cylinder having high response is used as the drive mechanism, the sticking roll can be accurately displaced in accordance with the short transfer interval or the high transfer speed of the work. It is possible to improve the efficiency of the sticking operation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, the work transfer mechanism 10 will be described. A pair of turning sprockets 12 and 12 are arranged at both front and rear ends of the base 11, and a driving sprocket 14 connected to a motor 13 is arranged below the turning sprocket 12 at the rear (left side in FIG. 3). Is wrapped around the drive sprocket 14 and the front (left side in FIG. 3) turning sprocket 12, slides on an elongated chain receiver (not shown), is turned by the front turning sprocket 12, and is positioned below the chain receiver. It runs around the tension sprockets 16 arranged along it and circulates in a path returning to the drive sprockets 14. Also,
A plurality of driven sprockets (not shown) engaged with the chain 15 are arranged above the chain receiver, and a material feed roll 17 is attached to each driven sprocket. When the chain 15 travels, the plurality of material feed rolls 17 are rotated at the same time, and the work W placed thereon is transported from right to left in FIG.

Further, a sensor 20 for detecting a front end and a rear end of the conveyed work W is supported by a bracket (not shown) at an end (the right end in FIG. 3) on the side where the work W is fed. It is provided. As the sensor 20, for example, a limit switch or the like is used. Also,
The motor 13 is provided with an encoder 21 that outputs a pulse signal corresponding to the rotation speed. This sensor 2
Based on 0 and a signal from the encoder 21, the operation of a cutter 30 and an air cylinder, which will be described later, is controlled.

Next, the wrapping material supply mechanism 22 will be described. Above the work transfer mechanism 10, a housing 26 supported by receiving columns 23 rising from both ends of the base 11 is provided. Rear (left side of FIG. 3) receiving pillar 2
3, a wrapping material roll 24 and an adhesive tank 25 are provided. The strip-shaped wrapping material L fed from the wrapping material roll 24 is coated with an adhesive and drawn into the housing 26. The adhesive is dried by the low-temperature hot air while passing through the inside. The hot air is supplied into the housing 26 from a hot air pressure source (not shown) via a hose 27 connected to a rear portion of the housing 26.

The wrapping material L having passed through the housing 26 is turned downward and sent downward along the front receiving column 23, and further turned obliquely rearward and downward by the turning roll 28 to correspond to the upper surface of the work W. As supplied.
Further, the receiving column 23 is provided with a heater 29 for warming the wrapping material L and making the adhesive easily adhere to the work W. Further, a rear portion of the housing 26 (the left side in FIG. 3).
Is provided with a cutter 30, and the wrapping material L is cut by the cutter 30 each time the wrapping material L is attached to each work W.

Next, a description will be given of a sticking roll for sticking the wrapping material L to the workpiece W and a structure for attaching the sticking roll.
On both left and right sides of the work transfer mechanism 10, a plurality of pairs of supports (support members, which are constituent elements of the present invention) 31 for supporting the sticking roll are arranged at predetermined intervals in the transfer direction. These columns 31 can adjust the position in the left-right direction.

The base 11 is provided with a pair of front and rear side bars 32 projecting leftward. A main slider 33 elongated in the front and rear direction is supported on the side bars 32 so as to be movable in the left and right directions. When rotated, the position of the main slider 33 can be largely adjusted in the left-right direction by the engagement of a male screw and a female screw (not shown).
A sub-slider 35 elongated in the front-rear direction is supported on the main slider 33 so as to be movable in the left-right direction. When the sub-handle 36 is rotated, the position of the sub-slider 35 can be finely adjusted in the left-right direction. ing.
All the columns 31 arranged on the left side of the transfer path of the work W are attached to the sub-slider 35 so as to move integrally.

On the other hand, a slider 37 elongated in the front-rear direction is supported on the right edge of the base 11 so as to be movable in the left-right direction. When the handle 38 is rotated, the position of the slider 37 can be finely adjusted in the left-right direction. It has become. All the columns 31 arranged on the right side of the transport path of the workpiece W are attached to the slider 37 so as to move integrally.

In this embodiment, the wrapping material L is attached to the work W having a rectangular cross section in such a manner that the wrapping material L is wrapped in the order of the upper surface, the side surface, and the lower surface. For this purpose, the upper surface sticking roll 4
0U, upper corner sticking roll 40UA, side sticking roll 4
OSS, the lower corner sticking roll 40LA, and the lower surface sticking roll 40L are arranged in order in the work transport direction.
Each of these sticking rolls is supported by the above-mentioned column 31. Hereinafter, the support structure will be described.

The upper bonding roll 40U is supported by a pair of right and left columns 31, 31, and as shown in FIGS. 4 and 5, the lifting slider 41 is provided with a bolt 42 and a lock nut 43 on both columns 31, 31. The crossbar 44 extends in the left-right direction between the two lifting sliders 41, 41. A fixed block 45 is attached to the crossbar 44, and an air cylinder 46 is fixed to the fixed block 45 by projecting a rod 47 downward. A movable bearing 48 is attached to the lower end of the rod 47, and the upper surface sticking roll 40U is rotatably supported by the movable bearing 48. The movable bearing 48 is provided with a pair of left and right guide rods 49, 49 extending upward in parallel with the rod 47, and the two guide rods 49, 49 are connected to the guide holes 50, 50 in the air cylinder 46.
The guide rod 49 and the guide hole 5
0 guides the upper surface sticking roll 40U so as to translate in the vertical direction in a constant posture. The air cylinder 46 is driven at a predetermined timing based on a detection signal from the sensor 20 as described later.

A pair of upper corner sticking rolls 40UA are provided symmetrically in the left-right direction, and are individually supported by the columns 31.
As shown in FIGS. 6 and 7, a lifting slider 51 is attached to each column 31 so as to be adjustable in height by means of bolts 42 and lock nuts 43. Each lifting slider 51 has a support plate 52 projecting inward in the left-right direction. Are attached by bolts 53. An air cylinder 54 is fixed to the tip of the support plate 52 with the rod 55 protruding downward. An elevating bar 56 is attached to the lower end of the rod 55, and a movable bearing 58 is attached to the elevating bar 56 so that the angle can be adjusted by a bolt 57.
The upper corner sticking roll 40UA is rotatably supported. A guide bar 59 is provided on the lifting bar 56 and extends upward in parallel with the rod 55.
9 is passed through the guide hole 60 of the support plate 52, and the upper sticking roll 4 for the upper corner is formed by the guide rod 59 and the guide hole 60.
0UA is guided so as to translate in the vertical direction in a fixed posture. The air cylinder 54 is driven at a predetermined timing based on a detection signal from the sensor 20 as described later.

A pair of side sticking rolls 40S are provided symmetrically to the left and right, and each is individually supported by a support 31. As shown in FIGS. 8 and 9, an elevating slider 61 projecting inward in the left-right direction is attached to each column 31 so as to be adjustable in height by a bolt 42 and a lock nut 43. A support plate 62 is attached. An air cylinder 63 has a rod 64 on the support plate 62.
Are fixed in such a manner as to project inward in the left-right direction. A movable bearing 65 is attached to a tip of the rod 64, and a side sticking roll 40S is rotatably supported by a support shaft 66 protruding from an upper end surface of the movable bearing 65. The movable bearing 65 is provided with a guide bar 67 extending outward in parallel with the rod 64.
The guide rod 67 and the guide hole 68 guide the side sticking roll 40S to move in a horizontal direction in a constant posture. The air cylinder 63 is connected to the sensor 2 as described later.
It is driven at a predetermined timing based on the detection signal from 0.

A pair of lower corner sticking rolls 40LA are provided symmetrically in the left and right directions, and each is individually supported by a column 31.
As shown in FIGS. 10 and 11, a lifting slider 69 protruding inward in the left-right direction is attached to each column 31 so that the height can be adjusted by a bolt 42 and a lock nut 43.
A support plate 70 is attached to the inner end of each lifting slider 69. An air cylinder 71 is fixed to the support plate 70 so that the rod 72 projects inward in the left-right direction.
A movable block 73 is attached to the tip of the rod 72, and a movable bearing 75 is attached to the movable block 73 so that the angle can be adjusted by a bolt 74. The lower bearing sticking roll 40LA is rotatably supported by the movable bearing 75. ing. The movable block 73 is provided with a guide rod 76 extending outward in parallel with the rod 72, and the guide rod 76 penetrates a guide hole 77 of the support plate 70. 77 guides the lower corner sticking roll 40LA so as to move in a horizontal direction in a constant posture. The air cylinder 71 is driven at a predetermined timing based on a detection signal from the sensor 20 as described later.

A pair of lower-side application rolls 40L are provided symmetrically to each other, and each is individually supported by a column 31. As shown in FIGS. 12 and 13, an elevating slider 78 is attached to each column 31 so that the height can be adjusted by a bolt 42 and a lock nut 43. Each elevating slider 78 has a support plate 79 projecting inward in the left-right direction. Are attached by bolts 80. An air cylinder 81 is fixed to the tip of the support plate 79 with the rod 82 protruding downward. An elevating bearing 83 is attached to the lower end of the rod 82, and the lower surface sticking roll 40L is attached to the inner end of the elevating bearing 83.
Are rotatably supported. The lifting bearing 83 is provided with a guide rod 84 extending upward in parallel with the rod 82, and the guide rod 84 is provided in the guide hole 8 of the support plate 79.
The guide rod 84 and the guide hole 85
Thus, the upper corner sticking roll 40UA is guided so as to move in a vertical direction in a fixed posture. Further, the air cylinder 81 is driven at a predetermined timing based on a detection signal from the sensor 20 as described later.

Next, means for controlling the operation of the air cylinder provided for each of the above-mentioned sticking rolls will be described with reference to FIG. The sensor 20 provided in the work transfer mechanism 10 detects the position of the front end and the position of the rear end of the transferred work W, and the detection signal is input to the control unit 86. Similarly, the encoder 21 provided on the motor 13 of the work transfer mechanism 10 emits a pulse signal corresponding to the rotation speed of the motor 13, and the pulse signal is input to the control unit 86. The control unit 86 and the encoder 21 constitute control means 87 which is a component of the present invention.

In the control unit 86, after a signal indicating the detection of the tip end of the work W is input from the sensor 20, the number of pulse signals from the sectional view 21 is changed to a predetermined number set for each air cylinder. Then, a control signal is output to the air supply device 88. In the air supply device 88, based on a control signal from the control unit 86, each of the air cylinders 46, 54, 63, and 63 is set such that the sticking rolls 40 U, 40 UA, 40 S, 40 LA, and 40 L approach the work W.
Air is supplied to operate 71 and 81 at individual timings.

Similarly, in the control unit 86, when the number of pulse signals from the encoder 21 reaches a predetermined number set for each air cylinder after a signal for detecting the rear end position of the work W is input from the sensor 20, A control signal is output to the air supply device, and based on this, the air supply device
Each sticking roll 40U, 40UA, 40S, 40LA, 4
0L is separated from the work W by each air cylinder 4
6, 54, 63, 71 and 81 are supplied.

When the number of pulse signals from the encoder 21 reaches a predetermined number corresponding to the position of the cutter 30 after the signal for detecting the rear end position of the workpiece W is input from the sensor 20, the control is performed. A signal for operating the cutter 30 is output from the unit 86.

Next, the operation of the present embodiment will be described. Prior to attaching the wrapping material L to the work W,
Rod 4 of air cylinder 46, 54, 63, 71, 81
In a state where 7, 55, 64, 72, and 82 are set at the reference projecting positions, the respective bonding rolls 40U, 40UA, and 4 are so arranged that the wrapping material L is appropriately pressed against the work W.
Adjust the positions and angles of 0S, 40LA, and 40L.

The positioning of the reference projecting position of the rod is as follows.
For example, a proximity switch (not shown) that can detect the position of a piston (not shown) that moves integrally with the rod is disposed at a predetermined position of the cylinder, and air is supplied based on the presence or absence of a detection signal from the proximity switch. This is done by controlling.

When the operation is started after the respective adhering rolls have been adjusted in this way, all the air cylinders operate so as to displace the adhering rolls in the direction of separating from the work W, and the respective adhering rolls The work W waits at a position retracted from the work transfer area. Then, when the conveyance of the work W and the supply of the wrapping material L are started, the wrapping material L is sequentially guided by the respective bonding rolls, so that the wrapping material L is deformed according to the shape of the work W and is stuck on the outer surface of the work W. The wrapping material L is cut by the cutter 30 every time when the wrapping material L is attached to one work W.

When the wrapping material L is adhered to the work W, the upper surface adhering roll 40U, the upper corner adhering roll 40UA, the side adhering roll 40S, and the lower corner adhering roll 40U coincide with the transfer timing of the work W. The sticking roll 40LA and the lower-side sticking roll 40L are sequentially displaced to come into contact with the outer surface of the front end portion of the work W, and the same as above with the rear end of the work W passing through each sticking roll. It is displaced so as to be separated from the work W in order.

The displacement operation of the sticking roll will be described in detail by taking the sticking roll for upper surface 40U as an example. When a detection signal from the sensor 20 that has detected the leading end of the work W is input to the control unit 86, counting of a pulse signal sent from the encoder 21 is started, and the count value is set in advance for the upper surface bonding roll 40U. When the value reaches the set value, a control signal is sent from the control unit 86 to the air supply device 88, the air is supplied from the air supply device 88, and the air cylinder 46 operates so as to extend the rod 47, and the upper surface sticking is performed. Roll 40U approaches the upper surface of work W. The operation of the air cylinder 46 is such that the top end of the work W is
Started just before reaching 0U. When the rod 47 projects to the predetermined projecting reference position, the supply of air is stopped and the extension of the rod 47 is stopped, and at the same time, the upper-surface sticking roll 40U moves in a state of contacting the upper surface of the leading edge of the work W. To stop. Thereafter, the state in which the upper surface bonding roll 40U presses the upper surface of the work W is maintained, and the wrapping material L is sequentially moved rearward from the top edge of the upper surface of the work W by the upper surface bonding roll 40U. It will be stuck.

A sensor 2 for detecting the rear end of the workpiece W
When a detection signal from 0 is input to the control unit 86, counting of the pulse signal sent from the encoder 21 is started, and when the count value reaches a set value, a control signal is sent from the control unit 86 to the air supply device 88. Air cylinder 4
6 operates to shrink the rod 47, and the upper surface sticking roll 40U is separated from the upper surface of the work W. The separating operation of the upper surface attaching roll 40U is performed immediately after the rear end edge of the work W passes through the upper surface attaching roll 40U. Then, the upper-side sticking roll 40U retracted upward waits for the succeeding work W conveyed subsequently, and performs the operation of sticking the wrapping material L again.

The displacement operation of the upper-side sticking roll 40U in synchronization with the transfer timing of the workpiece W as described above includes the other upper-side sticking rolls 40UA, side-side sticking rolls 40S, lower-side sticking rolls 40LA, and The same applies to the lower surface bonding roll 40L, and the operation of these bonding rolls causes the wrapping material L to be bonded so as to wrap the outer surface of the work W.

The setup change is performed as follows.
For example, in the case where the shape of the corner portion is the same except that the height or width of the work W is different, the position of the air cylinder is adjusted, or the rod reference position of the rod of the air cylinder (the sticking roll is (The position to be pressed). When the shape of the work W is different, for example, the sticking roll together with the air cylinder is removed from the support 31 and replaced with another one.

In the present embodiment, the sticking roll is not fixed in advance so as to wait at a position where the outer surface of the work W is pressed, but is retracted to a position where it does not interfere with the work W. Each sticking roll is individually displaced in accordance with the timing of W transport, so that the sticking roll comes into contact with the outer surface of the leading edge of the work W. For this reason, even if the position of the work W is displaced in the direction crossing the transport direction (up, down, left and right directions), there is no possibility that the tip of the work W collides with the sticking roll. This prevents an excessive load from acting on the work W, the sticking roll, the support member of the sticking roll, and the like, and also allows the wrapping material L to be stuck to the work W satisfactorily.

In the step of sticking the wrapping material L to the corner of the work W, the upper corner sticking roll 40UA and the lower corner sticking roll 40LA deform the wrapping material L according to the shape of the corner of the work W. The bonding rolls 40UA and 40LA guide the wrapping material L while being displaced so as to advance to the work W side. When the wrapping material L is pressed, the wrapping material L smoothly fits into the work W, and the number of sticking rolls required for pressing the wrapping material at the corners can be reduced.

Further, in the present embodiment, since the air cylinder having high response is used as the driving mechanism, for example, when the distance between the preceding work W and the succeeding work W is short, when the length of the work W is short, Even when the transfer speed of the work W is high, the sticking roll can be accurately displaced accordingly. Thus, for example, the work W can be conveyed at a high speed with a narrow interval between the works W, and the efficiency of the sticking operation can be improved.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention.

(1) In the above embodiment, the air cylinder is used as the drive mechanism for displacing the sticking roll. However, according to the present invention, the sticking is performed using another mechanism such as a rack and pinion or a solenoid. The wearing roll can be displaced.

(2) In the above embodiment, the upper corner sticking roll is displaced in the vertical direction. However, according to the present invention, it may be displaced in the left and right direction. It can also be made to displace in an inclined direction.

(3) In the above embodiment, the lower corner sticking roll is moved in the left-right direction. However, according to the present invention, the lower corner sticking roll may be displaced in the up-down direction. It is also possible to displace in an inclined direction.

(4) In the above embodiment, the air cylinder of the lower surface sticking roll is provided above the work transfer area.
It may be provided below the work transfer area.

(5) In the above embodiment, the case where each of the sticking rolls is independently attached to the individual support has been described. However, the present invention provides a single holder that can adjust the plurality of sticking rolls individually. The present invention can also be applied to a sticking device of a type in which the holder is attached to a support and the holder is attached to a column.
In this case, the holder is displaced in the direction of contacting and separating from the workpiece by a driving mechanism such as an air cylinder.
With such a configuration, the operation of bringing the plurality of application rolls into and out of contact with the work can be performed by one drive mechanism, so that the number of drive mechanisms can be reduced. In addition, since work such as replacement of a sticking roll and positioning of a workpiece can be performed simultaneously for a plurality of sticking rolls, workability is improved.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a rear view

FIG. 3 is a side view

FIG. 4 is a front view showing a support structure of the upper surface application roll.

FIG. 5 is a plan view showing a support structure of the upper surface application roll.

FIG. 6 is a front view showing a support structure of the upper corner sticking roll.

FIG. 7 is a plan view showing a support structure of the upper corner sticking roll.

FIG. 8 is a partially cutaway front view showing a supporting structure of the side-side sticking roll.

FIG. 9 is a plan view showing a support structure of a side sticking roll.

FIG. 10 is a front view showing a support structure of the lower corner sticking roll.

FIG. 11 is a plan view showing a support structure of the lower corner sticking roll.

FIG. 12 is a front view showing a support structure of the lower surface sticking roll.

FIG. 13 is a plan view showing a support structure of the lower-side sticking roll.

FIG. 14 is a block diagram showing operation control means of the air cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Work conveyance mechanism 20 ... Sensor 22 ... Wrap material supply mechanism 40L ... Lower surface sticking roll 40LA ... Lower corner sticking roll 40S ... Side surface sticking roll 40U ... Upper surface sticking roll 40UA ... Upper corner sticking roll 46 ... air cylinder (drive mechanism) 54 ... air cylinder (drive mechanism) 63 ... air cylinder (drive mechanism) 71 ... air cylinder (drive mechanism) 81 ... air cylinder (drive mechanism) 87 ... control means L ... wrapping material W ... work

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 31/00 B32B 35/00 B65H 37/04

Claims (1)

(57) [Claims] 1. A work transfer mechanism for transferring a work, a lap material supply mechanism for supplying a wrap material along a work transfer direction, and a wrap material capable of pressing the wrap material against the work in a work transfer direction. press for the arranged is Rutotomoni work along
A plurality of sticking rolls having different pressure directions , wherein the plurality of sticking rolls allow the wrapping material to be adhered to the outer surface of the work while being deformed according to the shape of the work. A driving mechanism provided for each of the adhering rolls and capable of displacing the adhering rolls in a direction of coming and going with respect to the work; a sensor for detecting the conveyed work ; The work transfer machine based on the detection signal
Output a pulse signal corresponding to the rotational speed of the motor
And encoder, the pulse signal from the encoder to each of said drive mechanism
When the set number is reached, the drive mechanism is
Control means for operating the plurality of sticking rolls in accordance with the work transfer timing.
Sequentially Te Align, beyond the position which does not interfere with the work
A wrapping material adhering device, characterized in that the edge outer surface is displaced to a position where it is pressed.