JPH0958620A - Glue applying device for envelope sealing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optionally and appropriately adjust the application area of a glue by a method wherein a glue container is movably provided in the direction which crosses the feeding direction of an envelope, and after the envelope is stopped in such a manner that its flap may be located at the moving area of the glue container, the glue container is moved, and a glue is applied by bringing a glue applying part into contact with the flap. SOLUTION: An envelope is loaded on a table 1 in such a manner that the flap may be located on the front side, and a side quide 20 is made to meet the side edge. By doing so, the size of the envelope is detected by the output of a microswitch by a switch pressing part. Then, when the envelope is pressed into a nipping part of a feeding roller 4, and that motion is detected by a sensor 10, the feeding roller 4 rotates, and moves the envelope to a glue applying device 5. When the flap reaches the glue applying position, and the roller 4 is stopped, a glue applying part 50 is pressed, and a glue is fed. Then, the glue applying part 50 comes into contact with the flap by moving to the right on a rail 33 by the driving of a belt 35 by a moving amount in response to the envelope size, and the glue is applied to the whole area of the flap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of gluing a flap of an envelope in which contents are stored, gluing the flap, folding the flap and pressing the envelope, and then gluing the flap in contact with the envelope. The present invention relates to a gluing device for an envelope enclosing machine, which is improved.

[0002]

2. Description of the Related Art As a conventional gluing device, Jikkou Sho 62
There is one disclosed in Japanese Patent Laid-Open No. 1053. This gluing device includes a hermetically sealed glue container having an outflow hole, a gluing roller having a peripheral surface facing the outflow hole, a first driven roller interlocking with the gluing roller, the first driven roller and an envelope. A second driven roller that sandwiches and guides the envelope together with the first driven roller, and a facing member that faces the gluing roller and contacts the flap of the envelope with the gluing roller. Then, with respect to the envelope conveyed on the belt conveyor, the first and second driven rollers sandwich the base of the envelope and send it in the envelope conveying direction, while the gluing roller contacts the flap of the envelope to apply the glue. To do.

[0003]

However, in this conventional gluing device, since the envelope is fed by the first and second driven rollers and the glue is fed from the gluing roller to the flap, the glue flows to the gluing roller. The glue is constantly replenished through the holes. Therefore, regardless of the size of the envelopes to be sealed and regardless of the number of envelopes to be sealed, the gluing roller may be constantly replenished with glue, and the amount of glue applied to the envelopes may become excessive. Further, it is difficult to control the amount of glue used, and when the glue is used in vain, the amount of glue used may be insufficient and the glue quality is not stable.

Furthermore, since the gluing roller is always at the same level as the envelope and at the position where the glue is applied, the glue is applied to the entire region from one edge to the other edge in the width direction of the flap. For this reason, in the envelope after sealing, the glue may protrude to the front.

The present invention has been made in view of the above problems, and it is possible to arbitrarily and appropriately adjust the application site of the glue,
An object of the present invention is to provide a glue supply device for an envelope sealing machine that can improve the gluing quality.

[0006]

A gluing device for an envelope sealing machine according to the present invention comprises a feeding roller for moving the envelope in one direction and a liquid glue provided in the middle of the moving area of the envelope to store and press the liquid glue. Then, a glue container having a glued portion at the lower end into which the liquid glue soaks, a folding member arranged behind this glue container to fold back the flap of the envelope, and a flap arranged further behind this folding member and folded back In a glue supply device for an envelope sealing machine having a pressing roller that presses against, drive means for moving the glue container in a direction intersecting the feeding direction of the envelope, and a flap for positioning the envelope in a movement region of the glue container. And then the glue container is moved to bring the glued portion into contact with the flap to apply glue.

Further, in the gluing device for an envelope sealing machine according to the present invention, a cap which is capped on the gluing portion at a reference position of the glue container and a lifting member which is connected to the cap and is vertically movable. An eccentric cam, a swing lever having one end pivotally supported and the other end engaging with the elevating member, and a cam follower provided at an intermediate portion of the swing lever and engaging with the eccentric cam. Can be configured.

Further, a first sensor for detecting the reference position of the glue container and a second sensor for detecting the lowest position of the cap.
A sensor, and the start and stop of the rotation of the eccentric cam and the start and stop of the movement of the glue container by the drive means are configured based on the detection results of the first sensor and the second sensor. You can

Furthermore, the drive means has a rail arranged along the moving range of the glue container, and a trolley on which the glue container is arranged and travels on the rail, and the rail is The reference position of the glue container is at a high position, and the gluing position for applying glue to the flap of the envelope is at a low position,
By having an inclined portion between the high position and the low position, the glue container on the carriage moves from the high position to the low position through the inclined portion, so that the glue portion of the glue container is attached to the flap of the envelope. It can be configured to contact and apply glue to the flap.

Furthermore, a guide table on which the envelope is placed, a side guide aligned with the side edge of the envelope on the guide table, a size detecting means for detecting the size of the envelope by the position of the side guide, and this size. The moving area of the glue container by the driving means may be determined based on the envelope size detected by the detecting means.

[0011]

In the present invention, the envelope is stopped so that the flap is positioned in the moving area of the glue container, and then the glue of the envelope is applied by moving the glue container. Therefore, since the moving range of the glue container can be set separately from the movement of the envelope, the glue can be applied to the flap of the envelope in an appropriate range according to the size of the envelope.

Further, in the invention according to claim 2, the envelope is fed to the glue container disposition position by the feeding roller and stopped. Then, when the eccentric cam makes one revolution, the eccentric cam engages with the cam follower and pushes it down. Then, the swing lever rotates and the lifting member engaged with the tip of the swing lever descends. As a result, the cap connected to the elevating member is lowered at the reference position of the glue container, and the cap is removed from the glued portion at the lower end of the glue container.

Next, the glue container is driven by the driving means to move along the flap of the envelope, and the glue part moves while contacting the flap to apply the glue. The area where the gluing part of the glue container comes into contact with the envelope is set separately from the feeding of the envelope, so that it can be set freely and arbitrarily.

For example, in the case where the driving means is a truck that travels on a rail, if the rail is provided with a step between a high position and a low position, when the truck moves to the low position, the glue container on the truck is The gluing portion may be configured to contact the flap of the envelope and apply the glue. With this, it is possible to arbitrarily and freely set the portion where the gluing portion contacts the flap.

The envelope is sent to the folding member in the subsequent process, the flaps of the envelope are folded back, the envelope is further sent to the pressing roller in the subsequent process, and the glued portion of the flap is pressed against the envelope by the pressing roller, and the sealing is completed. To do.

The size of the envelope can be detected by, for example, aligning the side guide with the side edge of the envelope on the guide table on which the envelope is placed. Therefore, it is possible to apply an appropriate glue according to the size of the envelope by an extremely simple operation.

[0017]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 15 are views showing an apparatus according to an embodiment of the present invention. FIG. 1 is a front view of the apparatus according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. FIG. 5 is a perspective view, FIG. 5 is a front view showing the glue supply device portion, and FIGS. 6 to 8 are views for explaining the operation of the glue supply device. As shown in FIGS. 1 to 4, the envelope is placed on the envelope guide table 1, and the housing 2
A feeding roller 4, a gluing device 5, a glue feeding / folding driving device 6 and a pressing roll 7 are arranged therein.

When the envelope placed on the envelope guide table 1 with its flap at the front is pushed toward the nip portion of the pair of feeding rollers 4 in the housing 2, the envelope slides on the guide 3. Then, it enters into the housing 2, and the sensor 10 in the housing 2 detects it, and the driving of the feeding roller 4 is started. As a result, the flap of the envelope is bitten by the feeding roller 4 and fed forward. The size of the envelope is recognized by the sensor detecting the position of the side guide 20 of the guide table 1, and the drive amount of the feeding roller 4 is determined based on the detected size. Therefore, the flap of the envelope moves to a position aligned with the glue container 30 of the gluing device 5 in a front view and stops.

In the gluing device 5, a gluing container 30 for storing liquid glue is installed so as to be movable in a direction perpendicular to the moving direction of the envelope. This glue container has rail 33 at its lower end.
It is supported by two wheels 31 traveling above, and its upper end is supported by a belt 35 via an extending portion 34.

The belt 35 is stretched between an idler timing pulley 36 and a drive timing pulley 37, and the drive timing pulley 37 is rotationally driven by a motor 38. Therefore, when the belt 35 is rotated by the forward and reverse rotations of the motor 38, the glue container 30 reciprocates on the rail 33 via the extending portion 34 fixed to the belt 35.

Thus, the rail 33 has a high position 33a, a low position 33c, and a step portion 33b between the high position 33a and the low position 33c, and the glue container 30 has a standard position at the high position 33a. Running on the rail 33 from the step 33
After passing through b, the low position 33c is reached, and the flap of the envelope stopped on the guide 3 at the same level as the low position 33c is glued on the low position 33c.

A sensor 39 for detecting the presence of the glue container 30 at the reference position is arranged above the glue container 30, and the glue container 30 moves forward and backward from the reference position detected by the sensor 39. After that, it moves back and returns to this reference position.

In the glue supply / folding drive device 6, the eccentric cam 40 is fixed to a shaft 41 rotatably supported on the device side plate in the housing 2. Below the eccentric cam 40, a swing lever 42 is disposed with one end thereof being swingably supported by a shaft 43. This swing lever 42
A notch 44 is formed at the tip of the other end, and a cam follower 45 that engages with the eccentric cam 40 is rotatably attached to the center of the swing lever 42. As a result, when the eccentric cam 40 rotates, the cam follower 45 engaged with the eccentric cam 40 is pressed downward, and the swing lever 42 swings downward about the shaft 43. The swing lever 42 is normally biased counterclockwise by a spring.

Two support shafts 5 are provided on one side plate of the apparatus.
6 are arranged side by side in the vertical direction, and the support shaft 56 is fitted in a hole 57 extending in the vertical direction of the elevating member 55. Accordingly, the elevating member 55 is guided by the support shaft 56 and moves up and down. An engaging shaft 60 is fitted in an upper end portion of the elevating member 55 in a vertically extending slot formed in a pair of device side plates, and the swing lever 4 is attached to the engaging shaft 60.
The two notches 44 are engaged with each other, and the rocking lever 42 is rocked to vertically move the lifting member 55 via the engaging shaft 60. The elevating member 55 is biased vertically upward by a spring (not shown).

On the other hand, in the middle between the glue container 30 and the elevating member 55, a supporting plate 53 is fixed to the side plate at the lower part thereof,
A hole extending in the vertical direction is formed in the support plate 53.

A felt-shaped gluing portion 50 is provided at the lower end of the gluing container 30. By pressing the gluing portion 50 upward, the liquid glue in the gluing container 30 penetrates into the felt-shaped gluing portion 50. It comes to come. A cap 51 is capped on the lower end portion of the glue container 30, and thus the cap 51 is capped on the lower end portion of the glue container 30 to prevent the glued portion 50 from drying. To do.

The cap 51 is fixed to a supporting arm 52, and an operating plate 54 is engaged with the elevating member 55. The supporting arm 52 and the operating plate 54 are supported by a supporting plate 53.
The support arm 52 and the actuating plate 54 are stacked with each other sandwiched therebetween, and are fixed to each other by bolts 61 on a connecting shaft inserted in a vertical hole provided in the supporting plate 53 to be connected to each other. Therefore,
When the elevating member 55 descends, the support arm 52 descends via the operating plate 54, and the cap 51 fixed to the support arm 52 descends. A tension spring 59 is stretched between the bolt 61 and the bracket 58, and the tension spring 59 constantly urges the support arm 52 and the cap 51 upward.

Support arm 52 to which cap 51 is fixed
Below the switch, as shown in FIG.
When the support arm 52 is lowered and the cap 51 is disengaged from the glue container 30 and is lowered to a position where the movement of the glue container 30 is not hindered, the support arm 52 turns on the micro switch 73. Thereby, the lowering of the cap to the predetermined position is detected.

On the other hand, as shown in FIG. 1, a keeper 71 is fixed to the lower surface of the support arm 52 to which the cap 51 is fixed, and a latch 72 is fixed to the support plate 53. In this latch mechanism, the elevating member 55 descends to push down the operating piece 54a of the operating plate 54,
At the same time, when the support arm 52 descends and the keeper 71 enters the latch 72, both are engaged and the keeper 71 is locked by the latch 72, and the support arm 52 stops at this lowest position together with the cap 51. The elevating member 55 rises as the eccentric cam 40 rotates. After that, when the eccentric cam further rotates and the elevating member 55 descends again, the elevating member 55 pushes down the operating piece 54a of the operating plate 54 to move the support arm 52. The keeper 71 is pressed via the. As a result, the engagement between the keeper 71 and the latch 72 is released and the keeper 71 is released.
Is separated from the latch 72.

As shown in FIG. 5, a glue pushing lever 80 is arranged below the glue container 30 and the eccentric cam 40. The glue pushing lever 80 has a V shape, and is swingably supported by a shaft 82 at a central portion thereof by a shaft 82. A roller 81 that engages with the cam follower 45 is attached to the end of the glue pushing lever 80 on the side of the eccentric cam 40, and the other end of the glue pushing lever 80 is the felt-like glued portion at the lower end of the glue container 30. Pressing part 83 for pressing 50
Is molded. As a result, when the eccentric cam 40 rotates and the cam follower 45 rotates downward, the cam follower 45 engages with the roller 81 and presses it downward. Then, the glue pushing lever 80 swings in the counterclockwise direction in FIG. 5, and the pressing portion 83 swings upward to push the glue applying portion 50 of the glue container 30 to push the glue in the glue container 30.
Exude to 0.

A knife 95 for folding the flap of the envelope is fixed to the engagement shaft 60, and the swing lever 4 is attached.
When the engaging portion 44 pivots downward due to the downward swinging of 2, the knife 95 also moves downward, pushing the flap downward, and folding back the flap. The knife 95 is made of thin plate spring steel.

As shown in FIG. 9, an envelope moving table 100 is arranged below the knife 95, and a sponge 99 is arranged in a portion one step lower than the table 100. Further, the envelope moving table 96 immediately below the glue container 30 is provided at the same height as the table 100, and a guide 98 inclined from the table 96 toward the sponge 99 is provided. The elastic mylar 97 is installed on the table 96 so as to extend from the table 96 toward the table 100. The mylar 97 is pushed toward the sponge 99 by the knife 95, and when the knife 95 retracts, the envelope on the mylar 97 is lifted up to the height of the table 100 by its elastic force.

As shown in FIG. 10, the glue container 30 is held by U-shaped holders 93 and 94 in a plan view so as to be held from both sides thereof, and the holder 93 is fixed to a pedestal in the housing. The holder 94 can swing at its lower end with respect to the holder 93 by the rotating shaft 90. Therefore, when the holder 94 is swung to the front, the glue container 30 held between the holder 93 and the holder 94 can be tilted forward and removed. A locking piece 91 is attached to the upper part of the holding tool 94, and a locking cutout 92 is formed at the rear end of the locking piece 91, and the cutout 92 is held. By engaging the locking notch provided in 93, the locking piece 91 can be fixed to the holder 93 and the glue container 30 can be gripped between the holders 93 and 94.

As shown in FIG. 4, a guide table 1 for mounting an envelope is provided on the outside of the housing 2, and the guide table 1 has a pair of side walls for regulating the side edges of the envelope. A guide 20 is provided. This side guide 20 has two pairs of grooves 120 provided on the table 1.
It is possible to move in the direction perpendicular to the feeding direction of the envelope by being guided by. When one side guide 20 of the pair of side guides 20 is moved along with the side edge of the envelope, the other side guide 20 also moves in conjunction with the known mechanism, and the other side edge of the envelope also moves. Thus, the envelope is always located in the center of the device regardless of its size.

Then, as shown in FIG. 4, on the device side of the groove 120 of the table 1, a groove 121 parallel to the groove 120 is provided.
Is formed, and one side guide 20 (on the left side in FIG. 4) is inserted into the groove 121, and the table 1 is formed.
The bent portion 21 is formed so as to extend to the lower surface side of the. A cutout 22 is formed in the bent portion 21, and a connecting rod 112 is locked in the cutout 22. On the other hand, the switch pressing portion 111 is connected to the rail 33 via the connecting portion 110 extending below the table 3, and the switch pressing portion 111 is also provided with a notch. The connecting rod 112 is locked. As a result, when one side guide 20 is moved along with the side edge of the envelope, the rail 33 also moves in the width direction of the envelope, and the step portion 33b thereof moves, so that the table 1 is moved.
Gluing is started from an appropriate position of the flap according to the size of the envelope placed on the flap.

Under the guide 3, three micro switches 113, 114 and 115 are arranged in this embodiment on the glue container reference position side with respect to the intermediate position between the side guides 20. These microswitches are turned on by pushing the switch piece by the switch pushing portion 111 of the rail member 110. In the present embodiment, when closing the narrow 4th long envelope, a side guide is used. The interval of 20 is the smallest, and the switch pressing unit 111 turns on the micro switch 113. Further, when the next largest envelope of elongated size 3 is placed on the table 1 and the side guide 20 is aligned with the side edge thereof, the switch pushing portion 111 turns on the micro switch 114. Further, in the case of the large square No. 3, the switch pressing unit 111 turns on the micro switch 115, and in the case of the larger square No. 2, the switch pressing unit 111 does not turn on any of the micro switches and remains off. The size of the envelope can be detected by such a combination of turning on and off the microswitch.

In this embodiment, a micro switch is used to detect the size of the envelope. However, this detecting means is not limited to the micro switch, and a sensor such as an optical sensor or a magnetic sensor or a potential meter or the like. May be used. Further, the number of detectors arranged is not limited to three, and may be appropriately determined depending on the number of types of envelope sizes to be detected.

Next, the operation of the embodiment apparatus configured as described above will be described with reference to the flow charts of FIGS. Note that FIG. 13 shows the next step of FIG. 12, FIG. 14 shows the operation of A of FIG. 12, and FIG.
2 shows the operation of B. First, the envelope is placed on the table 1 with its flap as a front portion, and the side guide 20 is fitted to the side edge thereof. Then, the switch pressing unit 111 causes the predetermined micro switch 113, depending on the size of the envelope,
Since 114, 115 are turned on or left off,
The size of the envelope can be detected. Then, when the first envelope is pushed to the nip portion of the feeding roller 4, the envelope is detected by the sensor 10, the feeding roller 4 starts rotating, and the envelope is moved toward the gluing device 5 by a predetermined distance.
That is, since the size of the envelope is detected as described above, the number of rotations or the rotation angle of the feeding roller 4 is determined based on the size of the envelope so that the flap is exactly at the gluing position. The feeding roller 4 stops rotating when the flap reaches the gluing position.

Next, the glue supplying operation and the glueing operation are started. First, the glue container 30 is in the reference position shown in FIG. This is the leftmost position in FIG. As shown in FIG. 6 (b),
The sensor 39 detects that the glue container 30 is at the reference position. Further, as shown in FIG. 6A, the glue container 30 is capped with a cap 51. Then, the glue container 30
Is in this reference position, the eccentric cam 40 makes a half rotation as shown in FIG. Then, the eccentric cam 40 pushes down the cam follower 45 to its lowest position. As a result, the elevating member 55 descends to its lowest position, and the support arm 52 to which the cap 51 is fixed descends accordingly, and the cap 51 descends. As a result, the cap 51 is removed from the glue container 30. When the cap 51 descends to its lowest position, the keeper 71 is latched.
2 and the cap 51 is fixed at that position. That is, when the eccentric cam 40 further rotates, as shown in FIG. 6, the rocking lever 42 and the elevating member 55 are raised by the spring, but the cap 51 is stopped at the lowest position shown in FIG. 7. When the eccentric cam 40 is rotated to the lowest position in the process of the first rotation of the eccentric cam 40, the pressing portion 83 of the glue pressing lever 80 is also rotated to the highest position. However, since the glue container 30 does not move from the reference position, the pressing portion 83 does not press the felt-like gluing portion 50 of the glue container 30, and therefore the glue is not supplied to the gluing portion 50. Absent. Further, the micro switch 73 detects that the cap 51 is lowered to the lowest position and removed from the glue container 30.

Then, as shown in FIG.
Since the glue container 30 has come off from the glue container 30,
As shown in, move to the glue supply position. This glue container 30
3, the belt 35 is moved by driving a motor 38, as shown in FIG.

Then, with the movement of the glue container 30 or after the movement of the glue container 30, the eccentric cam 40 enters the second rotation. Then, as shown in FIG. 8, the eccentric cam 40 rotates to the lowest position, and the glue pushing lever 80 swings via the cam follower 45. As a result, the glue pushing lever 80
The pressing portion 83 of the above is raised to the uppermost position, the gluing portion 50 is pressed by the pressing portion 83, the glue in the glue container 30 permeates the gluing portion 50, and the glue is supplied.

On the other hand, when the eccentric cam 40 rotates to the lowest position, the elevating member 55 also descends to the lowest position. As a result, the support arm 52 is pushed downward, the keeper 71 is pushed down into the latch 72, and the engagement between the two is released. Then, the support arm 52 and the cap 5
1 becomes free, and when the eccentric cam 40 further rotates and the cam follower 45 rises, the support arm 52 and the cap 51 rise due to the biasing force of the spring 59. This allows
The cap 51 returns to its uppermost position as shown in FIG. As the eccentric cam 40 rotates, as shown in FIG.
The knife 95 shown in FIG. 9 also repeatedly descends and rises, but since there is no envelope at this knife 95 position, the knife 95 never flaps back.

On the other hand, as shown in FIG. 8 (b), the glue container 30 has its glue part 50 pressed by the pressing part 83 to supply the glue, and then the belt 35 shown in FIG. As shown, the rail 33 is moved to the right in FIG.
Immediately after the glue is supplied, the wheels 31 of the glue container 30 travel on the rails at the high position 33a, so that the glue part 50 does not come into contact with the envelope on the table 3. After that, since the glue container 30 travels on the low position 33c via the inclined portion 33b, the glue portion 50 contacts the flap of the envelope on the table 3, and the glue portion 50 remains in contact with the flap,
As shown in FIG. 2, the glue container 30 moves in the width direction of the flap, and the glue is applied to the entire area of the flap.

The movement of the glue container 30 is performed by driving the belt 35 shown in FIG. 3, and the movement amount of the belt 35, that is, the movement amount of the glue container 30 is detected by the size of the envelope as described above. Since it is made, it is adapted to the size.

After the flap is glued in this way, the glue container 30 returns to the reference position detected by the sensor 39.

After the sensor 39 detects that the glue container 30 has returned to the reference position, the feeding roller 4 shown in FIG. 1 sends the envelope forward, and the knife 9 is placed as shown in FIGS. The envelope is stopped at the position where the flap is folded back. Since the size of the envelope is determined as described above, the amount of movement of the envelope is also determined as the amount required to stop the flap at a predetermined position based on the size of the envelope.

When the envelope after gluing stops at a predetermined position,
The eccentric cam 40 starts rotating, moves the cam follower 45 downward, and lowers the knife 95 via the shaft 60 engaged with the notch 44 of the swing lever 42. Then,
As shown in FIG. 9, for the envelope on the Mylar 97, the knife 95 sponges the boundary between the flap and the envelope body.
Push it toward 9 and fold or fold the flap. Further, when the eccentric cam 40 rotates, the cam follower 4
5 rises and knife 95 rises. After that, the feeding roller 4 feeds the envelope further forward, and the tip portion of the feeding roller 4 is caught in the pressing roller 7. Then, the flap is folded back into the envelope and pressed by the pressing roller 7 against the envelope to complete the sealing of the flap.

After that, by driving the feeding roller 4 or the pressing roller 7, the sealed envelope is ejected. Then, the next envelope is fed to the gluing position with the flap as the leading end. Then, the cap container 51 is removed from the glue container 30 in the same manner as described above. Then, in the glue container from which the cap 51 has been removed, glue is supplied to the glue applying section 50 at the glue supplying position (see FIG. 8) in the same manner as described above, and the same glueing operation is performed on the flap.
However, when the size of the envelope is small and there is no need to supply the glue to the gluing section 50 and the past gluing is sufficient, the glue feeding operation shown in FIG. The container 30 is moved toward the flap, and the gluing operation shown in FIG. 2 is performed. Therefore, according to this embodiment,
An optimal amount of glue can be applied to the flap to suit the size of the envelope.

The adhesive supply amount can be set arbitrarily as described above, but the adhesive supply is supplied in accordance with the fixed data set according to the number of sealing processes and the size of the envelope, and the number of sealing processes. Switching with the variable data set so that it can be performed by the DIP switch on the operation panel.

Further, the eccentric cam 40 is not continuously rotated in one direction, but is rotated in one direction to be stopped at a position other than the lowest position, and then is rotated in the reverse direction to raise the cam follower. Pushing portion 83 of push lever 80
The degree of pressing of the gluing portion 50 by can be set arbitrarily. This makes it possible to adjust the amount of exudation of the glue, and further prevent excessive supply of the glue.

[0051]

As described above, according to the present invention,
The area where the glue is applied to the flap of the envelope can be freely and arbitrarily set, and the glue can be prevented from protruding to the front side after sealing.

[Brief description of drawings]

FIG. 1 is a front view showing a glue supply device of an envelope sealing machine according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a perspective view of the same.

FIG. 5 is a front view showing the glue supply device portion of the same.

FIG. 6 is a diagram showing an operation of the glue supply device.

FIG. 7 is a diagram showing an operation of the glue supply device.

FIG. 8 is a diagram showing an operation of the glue supply device.

FIG. 9 is a diagram showing a gluing device.

FIG. 10 is a diagram showing a method for removing the glue container.

FIG. 11 is a diagram showing a sensor for detecting the size of an envelope.

FIG. 12 is a flowchart showing the operation of this embodiment.

FIG. 13 is a flowchart showing the continuation of FIG.

FIG. 14 is a flow chart showing a gluing operation of the same.

FIG. 15 is a flow chart showing a folding operation of the same.

[Explanation of symbols]

 1: Guide table 2: Housing 5; Glue device 6; Glue supply / folding drive device 7; Pressing roller 30; Glue container 40; Eccentric cam 42; Swing lever 45; Cam follower 50; Glue portion 51; Cap 55; Lifting member 80 ; Glue pressing lever 83; pressing part

Claims (5)

[Claims] 1. A feeding container for moving an envelope in one direction, and a glue container having a lower end which is provided in the middle of a moving region of the envelope and which holds a liquid glue and into which the liquid glue penetrates when pressed. In the glue supply device of the envelope sealing machine, which has a folding member arranged behind the glue container to fold back the flap of the envelope, and a pressing roller which is further arranged behind the folding member and presses the folded flap against the envelope, Drive means for moving the glue container in a direction intersecting the feeding direction of the envelope, and stopping the envelope so that the flap is positioned in the moving area of the glue container, and then moving the glue container to apply the glue. A gluing device for an envelope sealing machine, wherein a glue is applied by bringing a portion into contact with the flap. 2. A cap capped on the gluing portion at the reference position of the gluing container, an elevating member connected to the cap and vertically movable, an eccentric cam, and one end of which is rotatably supported. 2. A swing lever having an end engaging with the elevating member, and a cam follower provided at an intermediate portion of the swing lever and engaging with the eccentric cam.
The gluing device for the envelope-sealing machine described in 1. 3. A first sensor for detecting a reference position of the glue container and a second sensor for detecting a lowermost position of the cap, the start and stop of rotation of the eccentric cam, and the driving means. Starting and stopping the movement of the glue container by
The gluing device for an envelope sealing machine according to claim 1 or 2, wherein the gluing device is based on the detection results of the sensor and the second sensor. 4. The drive means includes a rail arranged along a moving range of the glue container, and a trolley on which the glue container is arranged and traveling on the rail, wherein the rail is the glue. The reference position of the container is at a high position, the glue position for applying glue to the flap of the envelope is at a low position, and there is an inclined portion between the high position and the low position, and the glue on the carriage is The envelope sealing machine according to any one of claims 1 to 3, wherein the gluing portion of the glue container comes into contact with the flap of the envelope when the container moves from the high position to the low position via the inclined portion. Gluing device. 5. A guide table on which the envelope is placed,
Side guides aligned with the side edges of the envelope on the guide table, size detecting means for detecting the size of the envelope by the position of the side guide, and glue by the driving means based on the envelope size detected by the size detecting means. The glue supply device for an envelope sealing machine according to any one of claims 1 to 4, characterized in that a moving range of the container is determined.