JP5190310B2 - Compact sealing device - Google Patents

Description

  The present invention is made of a plastic film material or the like, and is peeled off by peeling the release tape and folding the flap portion on the envelope with the tape attached to the adhesive surface provided on the flap portion on the opening side. The present invention relates to a compact sealing device for automatically carrying out the steps up to.

  As a sealing device for automatically sealing the envelope with tape, a device disclosed in Patent Document 1 is known. This device consists of a belt, a roller, etc., and is provided with a tape peeling stage and a flap bonding stage on a conveyance path for conveying an envelope with a tape in a posture where the adhesive surface of the flap part faces downward with the bottom first. In the tape peeling stage, the peeling tape is peeled off by the nail part provided in the peeling mechanism so as to sandwich the flap part conveyed by the peeling mechanism and the regulating plate, and in the flap bonding stage, the flap part is directed downward by the pad and the bending plate. The flap portion is bent and adhered by a folding plate that is pushed and bent and rotates downward. With this configuration, it is possible to seal automatically and continuously while transporting the envelope with the tape in which the printed matter is sealed.

JP 2007-223645 A

  However, the sealing device requires a transport path of a predetermined length for transporting the envelope with tape, and the tape peeling stage and the flap bonding stage are provided separately, so that the entire device becomes relatively large, It was a hindrance to installation at work places where installation space was limited.

  Accordingly, an object of the present invention is to provide a compact sealing device that can automatically perform the sealing operation of an envelope with a tape with a compact configuration that can be installed on a work table.

In order to achieve the above object, the invention according to claim 1 is characterized in that an envelope with a tape can be set at a predetermined position where the flap portion protrudes with the release tape facing upward, and above the flap portion protruding from the table. Is provided so that it can be moved up and down and moved forward and backward, and when it is lowered at the forward position, the lower end engages with the end of the release tape on the base side of the flap portion, and the upper and lower sides of the flap portion protruding from the table A first drive mechanism that is provided so as to be able to move forward and backward, supports a lower pressing plate that comes into contact with the lower surface of the flap portion by ascending at a forward position, and supports the peeling plate and the lower pressing plate, and moves them up and down and moves forward and backward. Is provided in the left and right direction below the flap part, and can be rotated about the root part of the flap part as an axis, and the flap part is brought into contact with the flap part from below with the rotation, and the flap part is rotated in the folding direction. And a second driving mechanism for rotating the rotating body between an initial position positioned below the flap portion and a terminal position bonded to the envelope body. The mechanism lowers the release plate and raises the lower presser plate by the mechanism to hold the flap, and moves the release plate and lower presser plate as they are to perform the release operation of the release tape, and then rotates by the second drive mechanism. The flap is sealed by rotating the body from the initial position to the end position.
According to a second aspect of the present invention, in the configuration of the first aspect, in order to more reliably perform the peeling operation of the peeling tape, a claw that is locked between the peeling tape and the flap portion at the lower end of the peeling plate when lowered. Is provided.
According to a third aspect of the present invention, in the configuration of the first or second aspect, even if the flap portion is made of a flexible material, the release plate is provided with a release plate in order to securely hold and perform the release operation. The upper presser plate that is parallel to the rear is provided so as to be able to move up and down and move backward and forward integrally with an interval smaller than the protruding length of the flap portion, while the lower presser plate is in a forward position with respect to the upper presser plate when raised, The upper end is provided so as to be in contact with the lower surface of the flap portion above the lower end of the peeling plate.
According to a fourth aspect of the present invention, in the configuration of any one of the first to third aspects, the first drive mechanism is arranged at the tip in order to smoothly and rationally move the peeling plate and the lower pressing plate up and down and forward and backward. An upper arm provided with a peeling plate, a lower arm provided with a lower presser plate at the tip, a drive rod in which the base ends of the upper and lower arms are rotatably coupled, and an actuator for moving the drive rod forward and backward And a guide rail that guides the upper and lower arms that move forward and backward with the forward and backward movement of the drive rod into an open posture at the foremost position and closes as the drive rod moves backward.
According to a fifth aspect of the present invention, in the configuration of the fourth aspect, the second drive mechanism meshes with a pinion provided at the rotation center of the rotating body in order to link the peeling operation and the sealing operation easily and rationally. And a slide block that is connected to the gear and rotates the gear by advancing and retreating in the front-rear direction, and a biasing means that biases the slide block to a forward position where the rotating body is the initial position. Thus, when the drive rod moves backward, the flap is brought into contact with the slide block and moved backward to perform the sealing operation of the flap portion after the peeling operation of the peeling tape.
According to a sixth aspect of the present invention, in the configuration according to any one of the first to fifth aspects, the rotating body is arranged at a predetermined interval in the protruding direction of the flap portion in order to obtain a rotating body suitable for reliable sealing. A plurality of string-like bodies are provided and have elasticity.

According to the first aspect of the present invention, the sealing operation of the envelope with tape can be automatically performed with a compact configuration that can be installed on the work table. Therefore, it can be introduced without any trouble even in a work place where the installation space is limited, and can contribute to the improvement of the work efficiency of the sealing work.
According to invention of Claim 2, in addition to the effect of Claim 1, the peeling operation | movement of the peeling tape by a peeling plate can be performed more reliably by providing the nail | claw in the peeling plate.
According to invention of Claim 3, in addition to the effect of Claim 1 or 2, even if the flap part is a flexible material such as a plastic film, the flap part is composed of the release plate and the lower pressing plate. Can be securely clamped to perform the peeling operation of the peeling tape.
According to the fourth aspect of the invention, in addition to the effect of any one of the first to third aspects, the peeling plate and the lower pressing plate can be smoothly moved and moved back and forth smoothly and rationally.
According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect, the slide block of the second drive mechanism can be operated at an appropriate timing by using the drive rod of the first drive mechanism, and peeling is performed. The operation and the sealing operation can be linked easily and rationally.
According to the sixth aspect of the invention, in addition to the effect of any of the first to fifth aspects, by adopting the string-like body, the flap portion can be pressed against the envelope body at the end position and reliably sealed. it can.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an example of a compact sealing device (hereinafter simply referred to as “sealing device”), FIG. 2 is an explanatory view of a first drive mechanism, and the sealing device 1 includes a main body 2 and the main body 2. And a table 3 connected to the front (the left side in FIG. 2 is the front).
First, the table 3 is a plate having a rectangular shape in plan view, and is attached horizontally at the front end of the main body 2. On the lower surface of the front end of the table 3, a pair of support rods 4, 4 project forward, and an L-shaped slide table 5 is slidable along the support rods 4, 4. Reference numeral 6 denotes a lever for clamping / unclamping the slide table 5 on the support rod 4.

An envelope with tape (hereinafter simply referred to as “envelope”) 10 to be sealed here is formed of a plastic film material, and a flap portion is formed in an opening of a vertically long envelope body 11 in which a printed matter such as a leaflet or a pamphlet is accommodated. 12 is a well-known configuration, and an adhesive surface 13 for sealing is formed on one side of the flap portion 12 over substantially the entire length in the left-right direction, and a strip-shaped peeling tape 14 that protects the adhesive surface 13 is provided. It is stuck.
When the envelope 10 is set on the table 3 at a position where the bottom of the envelope body 11 contacts the slide table 6 with the flap portion 12 at the rear (main body 2 side) and the peeling tape 14 facing upward, the slide 10 slides. By setting the position of the table 6, the root portion of the flap portion 12 is positioned at the rear end of the table 3, and the flap portion 12 is positioned at the sealing position of FIG.

The main body 2 supports the peeling plate 21, the lower pressing plate 22, the peeling plate 21 and the lower pressing plate 22 between the pair of left and right side plates 20, 20. The first drive mechanism 23 is provided.
The first drive mechanism 23 includes an air cylinder with a slide guide (hereinafter simply referred to as “air cylinder”) 24 serving as an actuator that is installed so that the piston rod 25 expands and contracts back and forth, and the piston of the air cylinder 24. A left and right drive rod 28 is connected to a bracket 26 provided at the tip of the rod 25, with both ends penetrating through a longitudinal hole 27 formed in the side plate 20 respectively. The base ends of a pair of upper and lower arms 29 and 30 are rotatably connected to both ends of the drive rod 28 inside the both side plates 20 and 20, respectively, and coil springs 31 stretched between the respective distal end portions are mutually connected. It is urged to rotate toward the closing direction.

  However, the rollers 32 are rotatably connected to the outer ends of the upper and lower arms 29, 30, respectively, while a pair of guides that are parallel to each other at a predetermined distance vertically on the inner side of the adjacent side plate 20. The rails 33 are provided in the front-rear direction, and the roller 32 of the upper arm 29 abuts on the upper surface of the upper guide rail 33 and the roller 32 of the lower arm 30 abuts on the lower surface of the lower guide rail 33, respectively. The closed postures of the upper and lower arms 29 and 30 that are urged to rotate are held constant. Since the front end portions of the guide rails 33 and 33 are formed in a letter C shape in which the distance between the two gradually increases toward the front, the upper and lower arms 29 and 30 are in the front position where the piston rod 25 is extended. 2, the rollers 32, 32 come into contact with the expanded portions of the guide rails 33, 33, respectively, so that the rollers 32, 32 move on the guide rails 33, 33 as the piston rod 25 contracts. It will gradually close until it rolls and reaches the parallel part.

  The peeling plate 21 is a belt-like shape that is installed on the front surface between the blocks 34, 34 fixed to the left and right upper arms 29, 29 via a mounting plate 35. As shown in FIG. A plurality of claws 36, 36,... Further, on the rear surface between the blocks 34, 34, an upper pressing plate 37 whose lower end is located above the claw 36 of the peeling plate 21 and whose vertical length is smaller than the peeling plate 21 is in the front-rear direction of the flap portion 12. It is installed in parallel with the peeling plate 21 with an interval smaller than the protruding length. When the upper arm 29 is in the open posture, the peeling plate 21 and the upper pressing plate 37 are inclined such that the lower end is positioned forward of the upper end, and gradually approach the vertical direction as the upper arm 29 is closed. Is substantially vertical in a closed posture reaching the parallel portion of the guide rail 33.

  The lower presser plate 22 is also a belt-like shape laid on the front surface between the L-shaped mounting plates 38, 38 fixed to the left and right lower arms 30, and when the lower arm 30 is opened, the upper end is positioned forward of the lower end. It becomes an inclined posture and gradually approaches the vertical direction with the closing operation of the lower arm 30, and becomes a substantially vertical posture in the closed posture where the roller 32 reaches the parallel portion of the guide rail 33. At this time, the lower presser plate 22 is in front of the upper presser plate 37 and its upper end is positioned above the claw 36 of the peeling plate 21.

On the other hand, the main body 2 is provided with a string-like body 40 that is a rotating body for sealing the flap portion 12 and a second drive mechanism 41 that rotates the string-like body 40.
As shown in FIGS. 1 to 3, first, outside the both side plates 20, there are respectively provided rotating plates 43 that taper in the radial direction by setting a central axis 42 at the end of the table 3. Between the end portions of the left and right rotating plates 43, 43, three string-like bodies 40, 40,... Are spanned at predetermined intervals in the radial direction. The string-like body 40 is formed of a coil spring and has elasticity, and a tube 44 made of a synthetic resin having a shorter length than the string-like body 40 is externally provided on the outside. Reference numeral 45 denotes a circular notch that is formed in the side plate 20 and allows the string-like body 40 to rotate when the string-like body 40 penetrates and the rotating plate 43 rotates.
Therefore, along with the rotation of both rotary plates 43, 43, the string-like body 40 wraps around the rear side of the table 3 from the initial position of FIGS. It moves above the table 3 and can move to the end position where it contacts the upper surface of the table 3 as it is.

  The second drive mechanism 41 includes a pinion 46 provided coaxially to the central axis 42 outside the rotating plate 43, a gear 47 provided below the pinion 46 outside the side plate 20, and meshed with the pinion 46, The slide block 48 is connected to rotate the gear by forward and backward movement in the front-rear direction, and the coil spring 49 is a biasing means for biasing the slide block 48 forward.

  First, the gear 47 has a circular arc-shaped outer periphery, a fan-like shape in which a tip near the center of the arc is pivotally attached to the side plate 20, and an eccentric position near the outer periphery is connected to the slide block 48 by a connecting bar 50. . The slide block 48 is a square plate provided so as to be slidable back and forth on the rail 51 provided on the side plate 20 below the long hole 27, and between the pins 52, 52 provided on the outer surface and the front upper side of the side plate 20. The coil spring 49 stretched on the side plate 20 is biased to a forward position where it abuts against a stopper 53 provided on the side plate 20. In this forward position, the gear 47 is rotated to the front side shown in FIGS. 2 and 3 via the connecting bar 50, and the rotating plate 43 is held at the rotational position where the string-like body 40 is the initial position via the pinion 46. I am letting. However, since the upper portion of the slide block 48 is positioned behind the long hole 27 behind the drive rod 28, the drive rod is moved in the middle of retraction of the drive rod 28 described later after the upper and lower arms 29, 30 are closed. 28 abuts against the front surface of the slide block 48 and moves the slide block 48 backward against the bias of the coil spring 49.

  A support bar 54 is installed between the upper centers of the side plates 20 and 20, and a flexible hose 55 connected to an external dust collector (not shown) and closed at the lower end is connected to the center of the support bar 54. In addition, a suction block 56 extending in the left-right direction with the flexible hose 55 at the center is attached. In the suction block 56, a suction passage 57 having a vertical cross-section of an inverted L shape and having a flow passage area smaller than the flow passage area of the flexible hose 55 is formed, and the rear end of the suction passage 57 is connected to the suction block 56. The suction port 58 is opened in the rear surface and communicated with the flexible hose 55, while the front end is opened in the lower surface of the suction block 56 and opens in the main body 2 slightly above the drive rod 28 in the state of FIG. It is said. By this suction port 58, the peeling tape 14 peeled from the flap portion 12 can be sucked.

The peeling and sealing operation by the sealing device 1 configured as described above will be described in detail with reference to FIGS. In addition, FIGS. 5-7 represents only the main components in the sealing apparatus 1, and has abbreviate | omitted others.
First, in a standby state in which the air cylinder 24 is not operated, as shown in FIG. 5A, the piston rod 25 is in the extended position, and the upper and lower arms 29 and 30 are in the open position at the front position. In this state, the envelope 10 is set at the sealing position on the table 3. At this time, the peeling plate 21 and the upper pressing plate 37 of the upper arm 29 are positioned on the upper front side of the flap portion 12, and the lower pressing plate 22 of the lower arm 30 is positioned on the lower front side of the flap portion 12.

Next, when a switch (not shown) provided in the drive circuit of the air cylinder 24 is turned on (for example, a foot switch or the like is used), the piston rod 25 of the air cylinder 24 is contracted, as shown in FIG. The drive rod 28 is retracted. When the upper and lower arms 29 and 30 are retracted along with the retraction of the drive rod 28, the rollers 32 roll toward each other along the guide rail 33, so that the upper and lower arms 29 and 30 are closed and the upper arm 29 is closed. The peeling plate 21 is lowered to a position where the lower end is in contact with the base of the flap portion 12. At the same time, the lower pressing plate 22 of the lower arm 30 abuts the upper end on the lower surface of the flap portion 12 slightly behind the peeling plate 21.
Subsequently, as shown in FIG. 5C, when the roller 32 passes through the expanded portion of the guide rail 33 and reaches the parallel portion, the upper and lower arms 29 and 30 are closed, and the tip of the claw 36 of the peeling plate 21 is moved. It enters between the peeling tape 14 and the flap part 12 from the front of the peeling tape 14. At this time, the lower presser plate 22 abuts the center of the flap portion 12 in the front-rear direction and pushes up the portion, while the upper presser plate 37 presses the rear end side of the peeling tape 14 behind from the upper side. The part 12 warps upwards like a bow, and the claw 36 of the peeling plate 21 is surely entered into the back side of the peeling tape 14.

When the drive rod 28 is further retracted, as shown in FIG. 6 (A), the upper and lower arms 29, 30 in the closed posture are retracted while the claw 36 of the release plate 21 is locked to the release tape 14, The peeling tape 14 is gradually peeled off from the flap portion 12 while curling from the front end. At this time, the lower pressing plate 22 slides the upper end along the lower surface with the flap portion 12 pushed up, and the upper pressing plate 37 also slides while pressing the release tape 14 from above, so that the flap portion 12 moves downward. It won't bend. In this state, both ends of the drive rod 28 come into contact with the front surfaces of the left and right slide blocks 48.
Next, as shown in FIG. 6 (B), when the retracting drive rod 28 retracts the slide block 48, the gear 47 starts to rotate backward via the connecting bar 50, and via the pinion 46 meshing therewith. The rotating plate 43 is rotated.
In FIG. 6C, the peeling tape 14 is completely peeled off from the adhesive surface 13 of the flap portion 12 by the further released peeling plate 21, and is held as it is on the back side of the peeling plate 21. The flexible hose 55 and the suction block 56 are illustrated from FIG.

  Subsequently, when the drive rod 28 further retracts the slide block 48, the peeling plate 21 is retracted backward from the rotation locus of the string-like body 40 as shown in FIG. The rotated rotating plate 43 is in a substantially horizontal posture, and the string-like body 40 is brought into contact with the lower surface of the flap portion 12. When the rotating plate 43 continues to rotate as it is, as shown in FIGS. 7B and 7C, the flap portion 12 wraps around the rear side of the table 3 and is folded upward by the string-like body 40. Up to this point, the peeling tape 14 is held on the back side of the peeling plate 21. Although the dust collector here is always operated, it may be operated only when necessary in conjunction with ON / OFF of the switch.

When the piston rod 25 reaches the last retracted position, as shown in FIG. 7D, the rotating plate 43 reaches the terminal position, and the string-like body 40 comes into contact with the upper surface of the rear end of the envelope body 11, and the flap portion In order to completely fold 12, the flap portion 12 is bonded to the envelope body 11 by the bonding surface 13 and sealed. At this time, both ends of the string-like body 40 reach the bottom surface of the table 3, but the string-like body 40 is bent by elasticity, allows the rotation of the rotating plate 43, and strongly presses the flap portion 12 against the envelope body 11. Therefore, the flap portion 12 is securely bonded.
On the other hand, as the peeling plate 21 retreats, the peeling tape 14 held on the back side reaches almost directly below the suction port 58 of the suction block 56, so that the peeling tape 14 is sucked into the suction block 56 from the suction port 58, and the suction path 57 to the dust collector through the flexible hose 55.

Thereafter, when the piston rod 25 is extended, the drive rod 28 moves forward and the slide block 48 is moved forward to the forward position by the bias of the coil spring 49, so that the gear 47 and the rotating plate 43 are rotated in reverse by the reverse operation. The string-like body 40 is returned to the initial position shown in FIG. On the other hand, the upper and lower arms 29 and 30 also move forward and expand again at the front portion of the guide rail 33 to return to the open posture of FIG.
Since the contraction and extension of the piston rod 25 are continuously performed in one cycle, when the switch is turned on once, the peeling tape 14 is peeled off by the upper and lower arms 29, 30 and the flap portion 12 is sealed by the string-like body 40. Are automatically performed in a series (depending on the setting of the expansion / contraction speed of the piston rod 25, about 1 to several seconds). Therefore, if the envelope 10 that has been sealed is removed from the table 3, a new envelope 10 is set on the table 3, and the switch is turned on, the envelope 10 can be sealed continuously.

  Thus, according to the sealing apparatus 1 of the said form, the envelope 10 can be set to the predetermined position which the flap part 12 protrudes with the peeling tape 14 up, and the flap part 12 protruded from the table 3 A peeling plate 21 which is provided so as to be movable up and down and can be moved back and forth upward, and whose lower end is locked to the end of the peeling tape 14 on the base side of the flap portion 12 by lowering at the forward position, and the flap portion 12 protruding from the table 3. The lower presser plate 22 that is in contact with the lower surface of the flap portion 12 when lifted at the forward position, the peeling plate 21 and the lower presser plate 22 are supported and synchronized with each other. A first drive mechanism 23 that moves up and down and moves back and forth, and is provided in the left-right direction below the flap portion 12. The first drive mechanism 23 can rotate around the root portion of the flap portion 12. The string-like body 40 that contacts the lower part 12 to rotate the flap part 12 in the folding direction and adheres to the envelope body 11, and the string-like body 40 are placed on the envelope body 11 and the initial position located below the flap part 12. A second drive mechanism 41 that rotates between the end position to be bonded, and the first drive mechanism 23 lowers the peeling plate 21 and raises the lower presser plate 22 to sandwich the flap portion 12. After the peeling plate 21 and the lower presser plate 22 are moved backward to perform the peeling operation of the peeling tape 14, the second drive mechanism 41 rotates the string-like body 40 from the initial position to the end position to seal the flap portion 12. By performing the above, it is possible to automatically perform the sealing operation of the envelope 10 with a compact configuration that can be installed on the work table. Therefore, it can be introduced without any trouble even in a work place where the installation space is limited, and can contribute to the improvement of the work efficiency of the sealing work.

In particular, here, a claw 36 is provided at the lower end of the release plate 21 between the release tape 14 and the flap portion 12 when lowered, so that the release operation of the release tape 14 by the release plate 21 is performed more reliably. be able to.
In addition, an upper pressing plate 37 that is parallel to the rear side of the peeling plate 21 is provided on the peeling plate 21 so as to be integrally movable up and down and spaced apart from the protruding length of the flap portion 12. 37 is provided so as to be in front of the upper presser plate 22 when lifted and the upper end is in contact with the lower surface of the flap portion 12 above the lower end of the peeling plate 21, so that the flap portion 12 can be a plastic film or the like. Even if it is the material which has flexibility, the peeling part 21 and the lower pressing board 37 can clamp the flap part 12 reliably, and can perform peeling operation | movement of the peeling tape 14. FIG.

  Further, the first drive mechanism 23 is connected to the upper arm 29 having the peeling plate 21 at the distal end, the lower arm 30 having the lower pressing plate 22 at the distal end, and the base ends of the upper and lower arms 29 and 30 to be rotatable. The drive rod 28, the air cylinder 24 that moves the drive rod 28 back and forth in the front-rear direction, and the upper and lower arms 29 and 30 that move forward and backward as the drive rod 28 moves back and forth are set in the open position at the foremost position. Since the guide rail 33 is guided so as to be closed as it moves, the peeling plate 21 and the lower presser plate 22 can be smoothly moved and moved back and forth smoothly and rationally.

In addition, the second drive mechanism 41 is engaged with a pinion 46 provided at the center of rotation of the string-like body 40, and a slide block that is connected to the gear 47 and rotates the gear 47 by advancing and retracting in the front-rear direction. 48 and a coil spring 49 that urges the slide block 48 to the advance position where the string-like body 40 is the initial position, and when the drive rod 28 is retracted, the slide block 48 is abutted and retracted. By performing the sealing operation of the flap portion 12 after the peeling operation of the peeling tape 14, the slide block 48 of the second drive mechanism 41 is moved at an appropriate timing by using the drive rod 28 of the first drive mechanism 23. Therefore, the peeling operation and the sealing operation can be linked easily and rationally.
The rotating body is arranged at predetermined intervals in the protruding direction of the flap portion 12 and has a plurality of elastic string-like bodies 40, so that the flap portion 12 is pressed against the envelope body 11 at the terminal position. It can be surely sealed.

Note that the peeling plate is not limited to the above form, and the shape and number of the nails can be changed as appropriate. The shape of the peeling plate is not limited to a tapered shape, and may be a plate shape whose thickness gradually decreases. Moreover, it is also possible to dispose a plurality of short release plates intermittently in parallel at a predetermined interval without forming a single sheet. Such a design change applies to the lower presser plate and the upper presser plate, and the upper presser plate can be omitted.
Further, in the first drive mechanism, for example, in the above-described form, the posture is changed by urging the upper and lower arms in the closing direction to bring the rollers into contact with the upper and lower sides of the guide rail. The posture may be changed by urging in the opening direction with a torsion spring or the like so that the roller abuts from the inside of the guide rail. Of course, it is not limited to the rolling of the roller, but the projection provided on the arm can be guided by inserting it into the groove formed on the guide rail, or the guide rail can be eliminated and guided by the groove provided on the side plate, etc. Can be changed as appropriate.
In addition, the actuator is not limited to an air cylinder, and a hydraulic cylinder, a ball screw, or the like can be employed.

  On the other hand, in the second drive mechanism, the design can be changed as appropriate without being limited to the above-described form, such as making the rotating plate into a rod shape, making the string-like body rubber, or making the gear circular. Further, the rotating body is not limited to a string-like body, and a belt-like rubber plate, a synthetic resin plate, or the like can be employed. Furthermore, the timing for operating the second drive mechanism is not limited to the contact of the drive rod of the first drive mechanism with the slide block. It is also conceivable to rotate the rotating body by operating the actuator provided in the above.

In the above embodiment, the horizontal placement type set on the work table is described. However, the setting posture of the sealing device itself is not limited to the horizontal, and for example, the table is inclined at a predetermined angle (for example, 30 °). It can be appropriately selected according to the form of the envelope, the working environment, etc., such as setting in a posture or setting in a horizontal direction. That is, the direction of the up / down and front / back movements of the peeling plate and the lower pressing plate in the present invention is the direction with respect to the flap portion, and the setting posture of the apparatus itself is not limited.
In addition, the present invention is not limited to an envelope made of plastic film, but can be applied to envelopes made of other materials such as paper.

It is a perspective view of a sealing device. It is explanatory drawing of a 1st drive mechanism. It is explanatory drawing of a 2nd drive mechanism. It is explanatory drawing of a peeling board, an upper side shows a plane and the lower side shows a front, respectively. (A)-(C) are explanatory drawings which show peeling operation | movement. (A)-(C) are explanatory drawings which show peeling operation | movement and sealing operation | movement. (A)-(D) are explanatory drawings which show sealing operation.

Explanation of symbols

  1 .... Compact sealing device 2 .... Main body 3 .... Table 5 .... Slide table 10 .... Envelope with tape 11 .... Envelope main body 12 .... Flap part 13 .... Adhesive surface 14 ..Peeling tape 20 ..Side plate 21 ..Peeling plate 22 ..Lower pressing plate 23 ..First drive mechanism 24 ..Air cylinder 25 ..Piston rod 28 ..Drive rod 29 .. Upper arm, 30 ... Lower term, 32 ... Roller, 33 ... Guide rail, 36 ... Claw, 37 ... Upper presser plate, 40 ... String-like body, 41 ... Second drive mechanism, 43 ..Rotary plate, 46 .. Pinion, 47 .. Gear, 48 .. Slide block, 49 .. Coil spring, 55 .. Flexible hose.

Claims (6)

For the envelope with a tape provided with an adhesive surface and a release tape that protects the adhesive surface on the flap portion that extends to the opening of the envelope body, the peeling operation of the release tape and the flap portion are folded back. A compact sealing device that performs a sealing operation to adhere to the envelope body,
A table capable of setting the envelope with the tape at a predetermined position where the flap portion protrudes with the release tape facing up;
A release plate that is provided so as to be movable up and down and forward and backward above the flap portion protruding from the table, and whose lower end is locked to the end portion on the base side of the flap portion in the release tape by lowering at the forward position,
A lower pressing plate that is provided so as to be able to move up and down and move forward and backward under the flap portion protruding from the table, and that contacts the lower surface of the flap portion by ascending at a forward position;
A first driving mechanism that supports the peeling plate and the lower pressing plate and moves them up and down and moves in a synchronized manner;
Provided in the left-right direction below the flap part, rotatable around the root part of the flap part as an axis, and in contact with the flap part from below with the rotation, the flap part is rotated in the folding direction, A rotating body to be bonded to the envelope body;
A second drive mechanism that rotates the rotating body between an initial position located below the flap portion and a terminal position that adheres to the envelope body;
The first driving mechanism lowers the peeling plate and raises the lower pressing plate to sandwich the flap portion, and moves the peeling plate and the lower pressing plate as they are to perform the peeling operation of the peeling tape. Thereafter, the flap body is sealed by rotating the rotating body from the initial position to the end position by the second drive mechanism.   2. The compact sealing device according to claim 1, wherein a claw that engages between the peeling tape and the flap portion when lowered is provided at a lower end of the peeling plate.   On the release plate, an upper press plate that is parallel to the rear of the release plate is provided so as to be integrally movable up and down and back and forth at intervals smaller than the protruding length of the flap portion, while the lower press plate is 3. The compact type according to claim 1, wherein the compact type is provided so as to be in a front position with respect to the upper pressing plate when ascending, and to be in contact with the lower surface of the flap portion above the lower end of the peeling plate. Sealing device.   The first drive mechanism, an upper arm having the release plate at the tip, a lower arm having the lower presser plate at the tip, and a drive rod to which the base ends of the upper and lower arms are rotatably coupled, An actuator for moving the drive rod back and forth in the front-rear direction, and a guide rail that guides the upper and lower arms that move forward and backward as the drive rod moves forward and backward to the open position at the foremost position and closes as it moves backward The compact sealing device according to any one of claims 1 to 3, wherein the compact sealing device is configured by.   A gear that meshes with the second drive mechanism and a pinion provided at the rotation center of the rotating body, a slide block that is connected to the gear and rotates the gear by advancing and retracting in the front-rear direction, and the slide block And a urging means for urging the rotating body to the advance position which is the initial position, and when the drive rod is retracted, the abutment is made to abut against the slide block so that the peeling tape is peeled off. 5. The compact sealing device according to claim 4, wherein a sealing operation of the flap portion is performed later.   The compact seal according to any one of claims 1 to 5, wherein the rotary body is a plurality of elastic string-like bodies arranged at predetermined intervals in the protruding direction of the flap portion. apparatus.

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