JP5830778B2 - Envelope supply device and sealing device - Google Patents

Description

  The present invention relates to an envelope supply device and a sealing device.

  Adhesive is applied to the flap part, which is the glue part of the envelope, or a dry adhesive is applied to the flap part in advance, and the flap part is moistened by supplying moisture to this part. 2. Description of the Related Art A sealing device that automatically seals a flap portion by sticking to a folded envelope body is known. For example, Patent Literature 1 discloses a carriage for applying an adhesive to a flap portion of a supplied envelope, a claw portion for scooping up the flap portion of the envelope when the carriage moves forward or backward, and the scooped flap portion. A technique related to a sealing device including a crease part having a surface for bending crease and a press roller for bonding a flap part is disclosed.

JP 2009-51057 A

In the sealing device described in the above-mentioned Patent Document 1, depending on the state of the envelope being transported or stored, an envelope that is brazed while the edge is warped or a margin portion is formed in the vicinity of either the left or right edge. Envelopes whose left and right edges are bulky, such as envelopes, cannot be separated one by one and supplied to the sealing processing unit, which may cause problems in sealing processing.

SUMMARY OF THE INVENTION The present invention solves the above-described problem, and an envelope supply device that can be easily separated one by one and supplied to a sealing processing section even if the envelope has a bulky left and right edge, and the envelope An object of the present invention is to provide a sealing device including a supply device.

In order to achieve the above object, the envelope supply device according to claim 1, wherein the front edge of the upper envelope of a plurality of envelopes stacked on the supply table abuts, and the upstream envelope is conveyed downstream. A front end regulating plate that regulates the front end, a conveyance roller that is disposed below the front end regulating plate, and conveys the envelope to the downstream envelope processing unit, and is disposed on the downstream side in the conveyance direction of the envelope from the front end regulating plate. In the envelope supply device comprising a separating means for separating the lowest envelope from the upper envelope when a plurality of envelopes pass below the plate, the width direction of the upper envelope which is to pass below the front end regulating plate An auxiliary restricting portion that abuts the central portion and restricts the conveyance to the downstream side is provided to protrude downward from the lower portion of the center portion in the width direction of the front end restricting plate, and the winding means is disposed below the front end restricting plate. A transporting roll for a whirl provided in front of the transport roller When, and a separation roller disposed opposite the conveyance roller for can該捌comprises length adjusting means for adjusting a protruding length from the front end regulating plate of the auxiliary restricting portion, the length adjusting means, front regulating plate A locking member which is locked at a lower portion of the locking height, a window portion formed in the front end regulating plate, and a screw portion which is inserted into the window portion, and the window portion includes the window portion. A plurality of support surfaces with different height positions are provided to support the screw portion inserted through the screw .

According to a second aspect of the present invention, in the envelope supply device according to the first aspect, the shaft center of the transport roller is set to be located substantially directly below the lower edge of the envelope contact surface of the auxiliary restricting portion. It is.

According to a third aspect of the present invention, in the envelope supply device according to the first or second aspect, the auxiliary restricting portion is configured such that the envelope contact surface is installed along a substantially vertical direction.

Further, an invention according to claim 4, the envelope feeder smell as claimed in any one of claims 1 to 3 Te, auxiliary restricting unit is made of being vertically in the locking member .

Furthermore, the invention according to claim 5 is the envelope supply device according to any one of claims 1 to 4 , wherein the auxiliary regulating portion is formed of a synthetic resin.

Furthermore, the invention according to claim 6 is the envelope supply device according to any one of claims 1 to 5 , wherein the auxiliary regulating portion is formed of a low friction material.

Furthermore, the invention described in claim 7 includes at least the envelope supply device according to any one of claims 1 to 6 and an envelope processing unit that seals the envelope supplied from the envelope supply device. Sealing device.

According to the first aspect of the present invention, the envelope supply device includes an auxiliary restricting portion that abuts the central portion in the width direction of the upper envelope that is about to pass below the front end restricting plate and restricts conveyance downstream. The front end regulating plate is provided so as to project downward from the lower part of the central portion in the width direction, and the rolling means is disposed below the front end regulating plate and disposed in front of the carrying roller, And a length adjusting means for adjusting the protruding length of the auxiliary restricting portion from the front end restricting plate, and the length adjusting means is associated with a lower portion of the front end restricting plate. It has a locking member that is locked with a variable stop height, a window portion formed in the front end regulating plate, and a screw portion that passes through the window portion, and the window portion is inserted through the window portion. supporting the threaded portion, the supporting surface of the different stages of height positions are provided, the inner The center part in the width direction of the upper envelope, which tends to be lower than the vicinity of the left and right edges due to the weight of the object, is properly regulated by the auxiliary regulating part, and the edge is warped depending on the state of the envelope being transported and stored Smoothly transport without restricting the lowermost envelope with the bulky left and right edges, such as envelopes that have been brazed, or envelopes with glued portions near the left or right edges Can do. In addition, since the length adjusting means for adjusting the protruding length of the auxiliary restricting portion from the front end restricting plate is provided, the protruding length of the auxiliary restricting portion from the front end restricting plate can be set according to the thickness of the envelope to be processed. It is possible to adjust the front edge of the envelope appropriately.

According to the second aspect of the present invention, since the axis of the transport roller is set to be located substantially directly below the lower edge of the envelope contact surface of the auxiliary restricting portion, the envelope restricting portion of the auxiliary restricting portion is provided. The highest part of the conveying roller is located almost directly below the lower edge of the contact surface, and the opening formed between the lower edge of the envelope contact surface of the auxiliary restricting portion and the conveying roller has an axis of the conveying roller. It is narrower than when it is far from the bottom edge. Therefore, a large number of envelopes do not slip into the opening and the envelopes are clogged, and the lower envelope can be conveyed downstream while smoothly regulating the upper envelope.

According to the invention described in claim 3, since the auxiliary restricting portion is provided with the envelope contact surface substantially along the vertical direction, the plurality of envelopes stacked substantially horizontally by the action of gravity, The upper envelope and the lowermost envelope can be properly separated.

Then, billing according to the invention described in claim 4, the auxiliary restricting unit, since it is vertically in the locking member, front regulating plate of the auxiliary restricting unit by adjusting the locking height of the locking member The protrusion length from can be easily adjusted.

According to the fifth aspect of the present invention, since the auxiliary restricting portion is formed of synthetic resin, the auxiliary restricting portion is formed on the envelope that can be processed easily and inexpensively and passes below the auxiliary restricting portion. It is hard to damage the envelope when touched.

According to the invention described in claim 6 , since the auxiliary restricting portion is formed of a low friction material, the envelope can be easily conveyed downstream when the envelope contacts the lower surface of the auxiliary restricting portion. .

Then, according to the invention described in claim 7, and envelopes processing unit for sealing processing and envelopes supply device according, the envelope supplied from the envelope feeder to any one of at least claims 1 to 6 Since the auxiliary restricting portion appropriately regulates the central portion in the width direction of the upper envelope, the envelope can be supplied to the downstream envelope processing portion, and the sealing process can be smoothly performed.

1 is an external perspective view of a sealing device according to an embodiment of the present invention. It is a perspective view in the state where the case of the sealing device was removed. It is the figure which looked at the state which removed the housing | casing of the said sealing apparatus from the back side. It is a longitudinal section which shows schematic structure of the said sealing apparatus. It is the figure which looked at the front-end regulation board of the said sealing apparatus, and its periphery from the rear side. It is the II sectional view taken on the line in FIG. It is an enlarged view of the latching | locking part of the said sealing apparatus. It is an enlarged view of the sealing agent application part and crease formation part of the said sealing apparatus. It is a figure which shows the internal structure of the sealing agent supply tool of the said sealing apparatus. It is an enlarged view which shows the usage condition of the said sealing apparatus. It is an enlarged view which shows the usage condition of the said sealing apparatus. It is an enlarged view which shows the usage condition of the said sealing apparatus. It is an enlarged view which shows the usage condition of the said sealing apparatus.

  One embodiment of the sealing device according to the present invention will be described below. 1 is an external perspective view of the sealing device, FIG. 2 is a perspective view of the sealing device with a housing removed, FIG. 3 is a view of the sealing device of FIG. 2 viewed from the rear side, and FIG. It is a longitudinal cross-sectional view which shows a structure. Here, for convenience of explanation, the right side in FIGS. 1 and 2 provided with the supply base 16 of the envelope 10 to be sealed is the rear side of the sealing device 1, and the same figure provided with the sealing agent application unit 3. The right side of the sealing device 1 will be described as the right side of the sealing device 1 and the left side of the sealing device 1 as the left side.

As shown in FIG. 1, an envelope 10 that is sealed by the sealing device 1 has a flap portion 12 that is a marginal portion on one end side of an envelope body 11 that stores contents, and a sealing agent is provided on the flap portion 12. Is applied, and the flap portion 12 is attached to the back surface 11a of the envelope body 11 and sealed.

In FIG. 4, the sealing device 1 includes a supply unit 2 that stacks a plurality of unsealed envelopes 10 with the back surface 11a facing upward, and supplies them one by one from the bottom to the front envelope processing unit B, and an unsealed state. Folding and pressing the sealant application part 3 for applying a sealant on the upper surface of the flap part 12 of the envelope 10, the crease forming part 4 for forming a crease in the flap part 12, and the envelope 10 formed with the crease, A sealing part 5 for sealing the flap part 12, a discharge stacking part 6 for stacking the sealed envelope 10, and a control part 7 for controlling the operation of each part are provided. As shown in FIG. 1, the front portion of the supply unit 2, the sealant application unit 3, the crease forming unit 4, the sealing unit 5, and the control unit 7 are accommodated in a housing 9.

As shown in FIG. 4, the supply unit 2 includes an envelope supply device F, and includes a supply table 16, a side regulating plate 17, a weight 53, a transport roller 22, a front end regulating plate 25, and a rolling means 19. The supply stand 16 is provided at a predetermined height position on the rear side of the sealing device 1 and is inclined so that the rear side of the supply stand 16 is high and the front side is low. As shown in FIG. 2, the side regulating plate 17 is slidably provided in the left and right width directions on the supply table 16, and adjusts the placement position of the envelope 10 on the supply table 16 to the substantially central portion in the width direction. is there. The weight 53 is placed on the upper surface of the plurality of envelopes 10 stacked on the supply base 16 and is used for pressing the envelopes 10.

The transport roller 22 is formed by a plurality of rubber rollers that are partly exposed on the envelope placement surface of the supply table 16. The conveyance roller 22 is linked to the supply motor 15 shown in FIG. 4 via a transmission mechanism 20 including a gear, a pulley, and a belt installed outside the right side plate 18 shown in FIG.

The front end regulating plate 25 is installed between the left and right side plates 18 at the front position of the supply table 16, and the front edge of the upper envelope 10 among the plurality of envelopes 10 stacked on the supply table 16 is the front end regulating plate 25. To the downstream side in the envelope conveyance direction in the supply unit 2 of the upper envelope 10 is regulated.

An auxiliary restricting portion 21 is provided projecting downward at the center in the width direction of the lower portion of the front end restricting plate 25. The auxiliary restricting portion 21 abuts on the central portion in the width direction of the upper envelope 10 that is about to pass below the front end restricting plate 25, and restricts the conveyance in the envelope conveying direction downstream in the supply portion 2. FIG. 5 is a view of the conveyance roller 22a that is the most downstream in the envelope conveyance direction in the front end regulating plate 25, the auxiliary regulating unit 21, the locking member 28, and the supply unit 2 as viewed from the rear side, and FIG. It is II sectional view taken on the line. As shown in FIG. 5, the auxiliary restricting portion 21 is formed to have a width direction length M that is about 1/5 to 1/4 of the width direction length L of the front end restricting plate 25. The left and right end portions of the auxiliary restricting portion 32 are formed in an arc shape so as not to damage the envelope 10 that passes below.

Further, the auxiliary restricting portion 21 is formed of an L-shaped member in cross-sectional view in which the upper portion is formed in a plate shape and the lower portion is formed thicker than the upper portion by the thickness of the locking member 28, as shown in FIG. The upper portion of the auxiliary restricting portion 21 is screwed by a plurality of screws 40 to the lower portion of the front surface of the locking member 28 locked to the front end restricting plate 25. The envelope contact surface S, which is the rear surface of the auxiliary restricting portion 21, is installed along a substantially vertical direction, and the axis C of the foremost transport roller 22a is located almost directly below the lower edge of the envelope contact surface S. It is set as follows.

The axis C of the transport roller 22a only needs to be positioned substantially directly below the lower edge of the envelope contact surface S of the auxiliary restricting portion 21, and the vertical surface U necessarily includes the lower edge of the envelope contact surface S of the auxiliary restricting portion 21. There is no need to be located within. In FIG. 6, the distance K of the axis C of the conveyance roller 22a from the vertical surface U including the lower end edge of the envelope contact surface S of the auxiliary restricting portion 21 is in a range of about 5 mm in the front-rear direction of the vertical surface U. It is preferable to set it in a range of about 3 mm.

The material of the auxiliary restricting portion 21 can be metal, synthetic resin or the like and is not particularly limited. However, the auxiliary restricting portion 21 is inexpensive and easy to process, and the envelope 10 is contacted with the envelope 10 passing below the auxiliary restricting portion 21. It is preferable to use a synthetic resin in terms of being hard to damage. Furthermore, even when the envelope 10 is in contact with the lower surface of the auxiliary restricting portion 21, the envelope 10 can be easily transported to the downstream side in the envelope transport direction in the supply portion 2, for example, a low resin such as silicon resin, fluororesin, POM resin, PVC resin, etc. It is preferable to form with a friction material.

The locking member 28 is formed in a thin plate shape, and the upper portion of the auxiliary restricting portion 28 is screwed and is locked to the lower portion of the front end restricting plate 25. The locking portion 89 for locking the locking member 28 includes window portions 82 and 83 formed on the front end regulating plate 25, and screw portions 84 and protrusions 87 inserted through the window portion 82.

The window portions 82 are through holes having a predetermined shape that are formed in two on the left and right ends of the front end regulating plate 25, respectively. FIG. 7 is an enlarged view of the windows 82 and 83 and the periphery thereof. The shape of the window portion 82 is such that the supporting surface that supports the screw portion 84 and the protrusion 87 inserted through the window portion 82 is set at three height positions. In FIG. It is high and the center is low, and the right side has three levels of intermediate height between the left side and the right side.

The screw portion 84 is inserted into the lower window portion 82, and as shown in FIG. 6, the front portion of the screw portion 84 is screwed into a female screw portion 85 formed through the locking member 28. The operation knob 90 is fixed to the rear end of the screw portion 84, and the locking member 28 is fixed at a predetermined height position by rotating the operation knob 90. The screw portion 84 and the operation knob 90 are configured as a part of the operation bolt 94.

The protrusion 87 is formed to protrude rearward from the rear surface of the locking member 28, and is inserted into the upper window 83 as shown in FIG. 7 and supported by the three-stage support surface. The position of the protrusion 87 in the window 83 is the same position as the position of the screw 84 in the lower window 82, thereby indicating the position of the screw 84 of the operation bolt 94 in the window 83. Yes.

Further, a seal 88 is attached to the upper side of the upper window 83, and the height of the operation bolt 94 and the protrusion 87 in the windows 82 and 83 depends on the thickness of the envelope 10. The operation method for adjusting the position is displayed.

The locking portion 89 that adjusts the height of the locking member 28 in three stages constitutes a length adjusting means 80 that adjusts the protruding length of the auxiliary regulating portion 21 from the front end regulating plate 25. Thus, by adjusting the height position of the locking member 28, the installation height of the locking member 28 and the auxiliary restricting portion 12 from the envelope conveying surface can be adjusted.

Thereby, the protrusion length from the front end regulation board 25 of the latching member 28 and the auxiliary | assistant regulation part 21 can be adjusted now according to the state of the envelope 10 which performs a sealing process.

An opening 27 for allowing the envelope 10 to pass therethrough is formed below the auxiliary regulating portion 21 and the locking member 28 between the conveyance roller 22a installed below. The height of the opening 27 is such that the auxiliary restricting portion 21 is provided, so that the central portion in the width direction is low, and the left and right sides of the auxiliary restricting portion 21 without the auxiliary restricting portion 21 are higher than the central portion.

The winding means 19 is disposed downstream of the front end regulating plate 25 in front of the supply table 16 in the envelope conveying direction in the supply unit 2, and when the plurality of envelopes 10 pass through the openings 27 below the front end regulating plate 25. The lowest envelope 10 a is separated from the upper envelope 10. The winding means 19 includes a conveying roller 23, a winding roller 24, and a driven roller 26.

Four conveying rollers 23 of the winding means 19 are arranged at intervals in the width direction at positions in front of the conveying rollers 22 that are partially exposed on the envelope placement surface of the supply table 16. The roller 23 is fixed to a common drive shaft (not shown), and the drive shaft is linked to a rolling motor 92 via a transmission mechanism (not shown) including a gear, a pulley, and a belt installed outside the right side plate 18. doing.

The separating roller 24 is disposed in front of the front end regulating plate 25 and is opposed to each conveying roller 23, and a clearance of about 0.1 mm is formed between the separating roller 24 and the conveying roller 23. The roller 24 is supported by the roller holder 24a so as to rotate only in the direction opposite to the conveying direction of the envelope 10. Further, when the envelope 10 is conveyed between the separating roller 24 and the conveying roller 23 opposed to the separating roller 24, it is biased by a spring 24b so as to sandwich the envelope 10 with a predetermined pressure, and the swing shaft 24c is The shaft can swing.

A driven roller 26 is installed in front of the separating roller 24 so as to face the conveying roller 23. Unlike the roller 24, the driven roller 26 can rotate forward and backward, and is urged by a spring 26b so as to be in rolling contact with the lower conveying roller 23 at a predetermined pressure, and can swing about the swing shaft 26c. It has become.

Four roller 24 and driven roller 26 are arranged at positions corresponding to the respective transport rollers 23 at intervals in the width direction.

FIG. 8 shows a partially enlarged view of the sealing agent application part 3 and the crease forming part 4 of the sealing device 1. The sealant application unit 3 includes a sealant supply tool 31, an application means 36, and an application plate 35. The sealing agent supply tool 31 contains a tape 30 holding a sealing agent for sealing the envelope 10, and in this embodiment, the sealing agent is held on one side as shown in FIG. A belt-shaped tape 30 to be supplied, a supply reel 71 of the tape 30, a take-up reel 72, and a transfer roller 73 that abuts the sealant held on the tape 30 against the flap portion 12 and presses and transfers to the envelope 10. A gear 74 that is attached to the reel 71 and rotates in conjunction with the rotation of the supply reel 71 and a gear 75 that meshes with the gear 74 and rotates the take-up reel 72 through the gear 74 by the rotation of the supply reel 71. The means 76 is accommodated in the case 77. Although not shown, the sealant is formed by an adhesive layer having a predetermined thickness, and the adhesive layer is held by a tape 30 having a predetermined width.

As shown in FIGS. 2 and 4, the coating means 36 includes a sealing agent elevating means 32 and a width moving means 33. The sealing agent elevating means 32 elevates and lowers the sealing agent supply tool 31. In FIG. 8, a state where the sealing agent supply tool 31 is lowered by the sealing agent elevating means 32 is indicated by a two-dot chain line. The sealant lifting / lowering means 32 is driven by a lifting / lowering motor 38 shown in FIGS.

The width moving unit 33 constitutes a moving unit that moves the sealing agent supply tool 31 relative to the envelope 10 while bringing the sealing agent holding surface of the tape 30 into contact with the envelope 10. The width moving means 33 moves the sealing agent supply tool 31 in the width direction from the right end to the left when the sealing agent supply tool 31 is lowered by the sealing agent raising / lowering means 32, and is thereby held by the tape 30. The sealant is transferred to the flap portion 12. The width moving means 33 is driven by a width moving motor 39.

The applicator plate 35 extends in the left-right width direction below the sealant supply tool 31, is installed substantially horizontally, and is disposed opposite to the sealant holding surface of the tape 30 via the sealant application position of the envelope 10.

The crease forming unit 4 includes a convex member 44 and a concave member 45 that are laterally arranged in a direction substantially orthogonal to the conveying direction of the envelope 10, and a convex member elevating means 46 that elevates and lowers the convex member 44. As shown, the convex member 44 is formed by bending at a substantially right angle, and has a bent convex part 48 that forms a fold in the flap part 12 at the lower part.

The concave member 45 has a concave groove 49 through which the bent convex portion 48 is inserted. By inserting the convex member 44 through the concave groove 49 by the convex member lifting / lowering means 46 with the flap portion 12 interposed, a fold is formed in a direction substantially perpendicular to the conveying direction of the envelope 10. The convex member raising / lowering means 46 is driven by the crease forming motor 50 shown in FIG. 8, and descends the convex member 44 as shown by a two-dot chain line in FIG.

As shown in FIG. 4, a front conveying unit 51 is installed in front of the sealant application unit 3 and the crease forming unit 4. The forward conveying means 51 includes a plurality of upper and lower pair of conveying rollers 52 arranged in front and rear, sandwiching the envelope body 11 of the unsealed envelope 10, and forward and backward rotation of the conveying roller 52 to move the envelope 10 in both the forward and backward directions. It is configured to be transportable to.

The sealing part 5 is located in the middle between the rear supply part 2 and the front sealing agent application part 3, folds the flap part 12 of the envelope 10 formed with the fold, and is applied in the sealing agent application part 3. The flap portion 12 is pressed and adhered to the back surface 11a of the envelope body 11 with a sealant. The sealing unit 5 includes a transport roller 55 that can rotate forward and backward to transport the envelope 10 in both the forward and backward directions, and a press roller 56 that is in rolling contact with the transport roller 55 with a predetermined pressing force by a spring bias. Yes.

The front conveying means 51 and the conveying roller 55 of the sealing unit 5 are connected by a belt (not shown), and both are driven by a front conveying motor 58 shown in FIG.

Further, the sealing portion 5 is provided with a rear end detection sensor 29 including a light emitting element and a light receiving element across the conveying surface of the envelope 10 between the conveying roller 55 and the press roller 56 arranged in parallel in two rows on the front and rear sides. ing. The rear end detection sensor 29 detects that the rear end edge 12 a of the flap portion 12 of the envelope 10 sent from the supply unit 2 has passed the installation position of the rear end detection sensor 29. As shown in FIG. 2, one rear end detection sensor 29 is installed at a position at the same distance from the center in the width direction.

Further, a flap contact plate 81 is provided vertically at a predetermined height position in front of the front press roller 56, and a fold is formed so that the tip portion of the flap portion 12 that has bulged upwards is The flap portion 12 is folded by being conveyed rearward while being in contact with the flap contact plate 81.

As shown in FIG. 4, the discharge stacking unit 6 is provided below the supply unit 2. The conveyance roller 23 disposed in the front part of the supply unit 2 and the conveyance roller 55 of the sealing unit 5 are arranged apart from each other by a predetermined length in the front-rear direction. The sealed envelope 10 is discharged downward from the space portion 60 formed between the conveying rollers 23 and 55 and stacked on the discharge stacking portion 6.

The control unit 7 controls the entire sealing device 1 and includes a CPU, a ROM, a RAM, a nonvolatile memory, and the like. The controller 7 is supplied with a signal from the setting means 65 for inputting and setting the size of the envelope 10 and a signal from the rear end detection sensor 29. As shown in FIG. 1, the setting means 65 is constituted by an operation panel 64 or the like, and the user inputs and sets the size of envelopes such as corner 2, length 3 and length 4 to be sealed from the operation panel 64.

Then, the driving state of the supply motor 15, the forward conveying motor 58, the lifting / lowering motor 38, the width moving motor 39, and the crease forming motor 50 is appropriately controlled by the output from the control unit 7.

(Function)
The operation of sealing the unsealed envelope 10 by the sealing device 1 will be described. First, regarding the outline of the sealing operation, as shown in FIG. 4, a large number of unsealed envelopes 10 are on the supply stand 16 with the flap portion 12 on the rear side and the surface of the envelope 10 on which the destination is written on the lower side. And is conveyed forward one by one from the lowest envelope 10a by the action of the conveying roller 22 and the rolling means 19. The envelope 10 transported from the supply unit 2 passes through the sealing unit 5 while remaining unsealed, reaches the sealing agent application unit 3, and after the sealing agent is applied, the crease is formed in the fold forming unit 4. It is formed and transported backward by the forward transport means 51 in the opposite direction to the supply, and the flap portion 12 is sealed in the sealing portion 5 and discharged to the discharge stacking portion 6. This will be described in detail below.

A plurality of unsealed envelopes 10 are stacked on the supply table 16, a weight 53 is placed on the upper surface of the envelope 10, and the feed rollers 22 are driven to sequentially forward from the lowest position. At this time, the front end of the upper envelope 10 abuts against the rear surfaces of the front end regulating plate 25, the locking member 28, and the auxiliary regulating portion 21, the forward conveyance is regulated, and only the envelope 10 that has passed through the opening 27 is forward. It is conveyed to.

Since the axis C of the foremost conveying roller 22a is set to be located almost directly below the lower edge of the envelope contact surface S of the auxiliary restricting portion 21, the lower edge of the envelope contact surface S of the auxiliary restricting portion 21 is set. And the opening 27 formed between the lower end edge of the envelope contact surface of the auxiliary restricting portion 21 and the conveying roller 22a is located at the axis C of the conveying roller 22a. Is narrower than when it is far from the bottom edge. Therefore, a large number of envelopes 10 do not slide into the openings 27 and the envelopes 10 are not clogged with the openings 27, and the lower envelopes 10 are downstream of the supply unit 2 in the envelope conveyance direction while smoothly regulating the upper envelopes 10. Can be transported to.

Further, since the envelope contact surface S of the auxiliary restricting portion 21 is provided along the substantially vertical direction, the front edge of the envelope 10 abuts the auxiliary restricting portion 21 at a substantially right angle, It is possible to convey the lower envelope 10 while appropriately regulating the conveyance to the downstream side in the envelope conveyance direction in the supply unit 2 of the envelope 10.

The locking member 28 and the auxiliary regulating portion 21 are manually adjusted by the user using the length adjusting means 80 according to the thickness of the contents of the envelope 10, the shape of the envelope, the storage state, and the like. For example, when the contents of the envelope 10 to be processed are thick, the operation knob 90 is rotated to loosen the screw portion 84, and the protrusion 87 is positioned at a high position of the upper window portion 83 in accordance with the display of the seal 88. Accordingly, the screw portion 84 is locked at a high position of the lower window portion 82, and the operation knob 90 is rotated in the reverse direction to tighten the screw portion 84. Thereby, the installation height of the locking member 28 and the auxiliary | assistant control part 21 can be made high, the opening part 27 can be enlarged, and the thick envelope 10 can be passed easily.

Conversely, when the envelope 10 is thin as a whole due to the paper quality of the envelope 10 and the thickness of the contents, the protrusion 87 of the length adjusting means 80 is locked at the low position of the window 83. The installation height of the locking member 28 and the auxiliary restricting portion 21 is lowered. Thereby, the envelope 10 having a small thickness can be separated from the upper envelope 10 and conveyed forward, and a smaller number of envelopes 10 are allowed to pass than when the installation height of the auxiliary restricting portion 21 is set high. It is possible.

In this way, the length of the auxiliary regulating portion 21 protruding from the front end regulating plate 25 can be adjusted according to the thickness of the contents of the envelope 10 to be processed by the length adjusting means 80, and the envelope 10 can be appropriately adjusted. The front edge of the can be regulated. Further, the length adjusting means 80 includes a locking member 28 that is locked to the lower portion of the front end regulating plate 25 so that the locking height is variable, and the auxiliary regulating portion 21 is screwed to the locking member 28 and is suspended. Thus, by adjusting the locking height of the locking member 28, the protruding length of the auxiliary restricting portion 21 from the front end restricting plate 25 can be easily adjusted.

Further, as the type of envelope 10, the margin part generated when the envelope 10 is formed in a bag shape is the type formed in the center part in the width direction of the back surface of the envelope 10, and the vicinity of one of the left and right edges There are some types that are formed. FIG. 1 shows a case where the margin portion 11g is of the type formed in the vicinity of the right edge of the envelope 10. In the envelope 10 of this type, when it is placed on the supply table 16, only the edge side with the margin portion 11g may be very bulky.

Further, depending on the state of the envelope 10 during transportation or storage, the width direction of the envelope 10 in which either the left or right edge of the stacked envelopes 10 or the left and right edges of the envelope 10 are in a low position due to the presence of the contents In some cases, the plurality of envelopes 10 are warped and bulked as compared to the center portion. FIG. 13 shows, as an example, a state in which the left and right edges of the envelope 10 are brazed while being warped, and the warpage is not repaired even after the contents are sealed, and the envelope 10 is placed on the supply table 16.

In such a case, the auxiliary restricting portion 21 is not provided at the position corresponding to the warped edge of the envelope 10, and the auxiliary restricting portion 21 is provided only at the center in the width direction. The central portion in the width direction of the upper envelope 10 that tends to be positioned lower than the vicinity of the left and right edges due to the weight and weight 53 is properly regulated by the auxiliary regulating portion 21 and separated from the lowest envelope 10a, and the upper envelope 10 Similarly, the lowermost envelope 10a having the bulky left and right edges is smoothly passed through the opening 27 without being restricted by the auxiliary restricting portion 21, and is conveyed downstream in the envelope conveying direction in the supply portion 2. Can do.

As described above, even when the left and right edges of the envelope 10 are warped while being warped up as compared to the central portion in the width direction depending on the storage state of the envelope 10, the lowermost envelope 10a is opened to the opening. 27 can be passed. Further, since the margin portion 11g of the envelope 10 is formed in the vicinity of either the left or right edge, when it is placed on the supply table 16, only the edge side where the margin portion 11g is formed is very much. Even when it becomes bulky, since the opening 27 is widely formed in the portion corresponding to the edge of the envelope 10, the bulky envelope 10 is passed through the opening 27, conveyed forward, and glued. The central portion in the width direction of the envelope 10 without the portion 11g can be separated and conveyed by the auxiliary restricting portion 21.

Since the auxiliary restricting portion 21 is formed in an L-shape in cross section and the lower portion is formed thicker than the upper portion, even when the sealing device 1 is used for a long time, the contact surface of the front edge of the envelope 10 or the conveyance The lower surface of the auxiliary restricting portion 21 with which the back surface 11a of the envelope 10 is in sliding contact is not easily damaged and has high durability.

Then, the envelope 10 that has passed through the opening 27 is further separated by the rolling roller 24. When a few envelopes 10 pass through the opening 27 without coming into contact with the auxiliary restricting portion 21, only the lowermost one envelope 10 is passed through the front sealing portion 5 by the rolling roller 24. Transport to.

Here, for the envelope 10 having a long width in the width direction and the envelope 10 having a size of 2 corners, the envelope 10 that is in close contact with the top and bottom can be easily separated by the four roller 24.

In the sealing unit 5, the envelope 10 in an unsealed state is nipped and conveyed by the conveying roller 55 and the press roller 56 and supplied to the front sealing agent application unit 3. The rear end detection sensor 29 detects that the rear end edge 12 a of the flap portion 12 has passed through the installation location of the rear end detection sensor 29 and supplies the detected result to the control unit 7.

The envelope 10 that has reached the sealant application unit 3 is conveyed forward with the envelope body 11 sandwiched between the forward conveying means 51 shown in FIG. Then, when the rear end edge 12a of the flap portion 12 of the envelope 10 is located almost directly below the rear end portion of the sealing agent supply tool 31 on the coating plate 35, the driving of the front conveying means 51 is stopped. This is because the control unit 7 detects the rear end edge 12a of the flap portion 12 by the rear end detection sensor 29 based on the length of the flap portion 12 corresponding to the size of the envelope 10 set by the setting means 65. After the envelope 10 is conveyed by a predetermined amount, the front conveyance motor 58 is stopped at a predetermined position.

In the sealant application unit 3, the sealant supply tool 31 is moved in advance from the right end to the left by a predetermined amount by the width moving unit 33 to a predetermined position corresponding to the width of the envelope 10 set by the setting unit 65. Yes. In this state, as shown in FIG. 10, the sealing agent supply tool 31 is lowered by the sealing agent elevating means 32 and comes into contact with the flap portion 12 on the coating plate 35. Then, the sealing agent supply tool 31 is moved rightward by the width moving means 33, and the adhesive layer as the sealing agent of the tape 30 is transferred to the flap portion 12.

In the sealing agent supply tool 31, the transfer roller 73 rotates as the sealing agent is transferred to the flap portion 12, and the tape 30 is sequentially delivered from the supply reel 71, and the tape 30 is taken up on the take-up reel 72.

After the application of the sealant to the flap portion 12, the sealant supply tool 31 is lifted by the sealant elevating means 32, moved to the original position by the width moving means 33, and predetermined for the envelope 10 sent next. Wait at the position.

Then, as shown in FIG. 11, the folding convex portion 48 is lowered from the standby position to the crease forming position by the convex member raising / lowering means 46, inserted into the concave groove 49 together with the flap portion 12, and the fold portion is folded into the flap portion 12. Is formed.

After the crease is formed, the front conveyance motor 58 is rotated in a direction opposite to that before the application of the sealant and the crease is formed, and the envelope 10 is conveyed to the rear sealing unit 5 by the front conveyance unit 51. When the envelope 10 reaches the sealing portion 5, as shown in FIG. 12, the flap portion 12 comes into contact with the flap contact plate 81 and the flap portion 12 is folded, and is folded between the press roller 56 and the conveying roller 55. The fold formed in the eye forming part 4 is pinched, the flap part 12 is folded, and the envelope 10 is conveyed backward. The envelope 10 is sealed by attaching the flap portion 12 to the envelope body 11 with the sealant applied in the sealant application portion 3. The envelope 10 is discharged downward from the space 60 shown in FIG. 4 and is loaded on the discharge stacking unit 6.

As described above, in the present embodiment, the envelope supply device F provided with the auxiliary restricting unit 21 supplies the envelope 10 to the envelope processing unit B and performs the sealing process. Therefore, the auxiliary restricting unit 21 performs the width direction of the upper envelope 10. The envelopes 10 can be separated one by one by the rolling means 19 while properly regulating the central portion, and supplied to the envelope processing unit B, so that the sealing process can be performed smoothly.

In the above-described embodiment, the sealing device 1 that seals the envelope 10 is described as an example of the envelope processing unit B. However, the present invention is not limited to this. For example, the envelope processing unit encloses the envelope with the contents. It is good also as an apparatus. Further, although the axis C of the transport roller 22a is set to be located directly below the lower end edge of the envelope contact surface S of the auxiliary restricting portion 21, the position is substantially below the lower end edge of the envelope contact surface of the auxiliary restricting portion. The axis of the transport roller may be set apart.

Moreover, although the auxiliary | assistant regulation part 21 installed the envelope contact surface S along the substantially vertical direction, you may incline from a perpendicular direction, for example, an envelope contact surface and an envelope conveyance surface cross at right angles or incline and cross. May be. Moreover, although the length adjustment means 80 which adjusts the protrusion length from the front-end regulation board 25 of the auxiliary | assistant regulation part 21 was provided, length adjustment means does not need to be provided but an auxiliary | assistant regulation part is made into the lower part of a front-end regulation board. It may be fixed or may be provided integrally with the front end regulating plate.

Further, the length adjusting means 80 includes a locking member 28 that is locked to the lower portion of the front end regulating plate 25 so that the locking height is variable, and the auxiliary regulating portion 21 is suspended from the locking member 28. There is no need to provide a locking member, and the auxiliary restricting portion may be suspended from the front end restricting plate as described above.

The sealing agent supply tool 31 is moved up and down by the sealing agent lifting and lowering means 32 applied, and the sealing agent is applied. However, the sealing agent supply tool is fixed, the envelope is moved so as to contact the sealing agent supply tool, and the sealing agent is applied. It is good also as a structure.

Moreover, although the position which apply | coats sealing agent was made into the flap part 12 of the envelope 10, it is not limited to this, The location which sticks the flap part of an envelope main body is made into the application | coating position of sealing agent, and it matches this application position. You may control the conveyance amount by a front conveyance means.

B Envelope processing section C Axis center F Envelope supply apparatus 1 Sealing apparatus 10, 10 a Envelope 16 Supply base 19 Rolling means 21 Auxiliary restricting section 22 Conveying roller 25 Front end restricting plate 28 Locking member 80 Length adjusting means

Claims (7)

A front end regulating plate that abuts the front edge of the upper envelope among the plurality of envelopes loaded on the supply table, and regulates the conveyance of the upper envelope to the downstream side; and
A conveying roller disposed below the front end regulating plate and conveying the envelope to the downstream envelope processing unit;
In an envelope supply device that is disposed downstream of the front end regulating plate in the conveyance direction of the envelope and includes a separating means that separates the lowest envelope from the upper envelope when a plurality of envelopes pass below the front end regulating plate ,
The center part in the width direction of the upper envelope that is going to pass under the front end restricting plate abuts, and the auxiliary restricting part that restricts the conveyance downstream is projected downward from the lower part of the center part in the width direction of the front end restricting plate. The provided and separating means includes a separating conveying roller provided at a position in front of the conveying roller disposed below the front end regulating plate, and a separating roller disposed opposite to the separating conveying roller ,
A length adjusting means for adjusting the protruding length of the auxiliary regulating portion from the front end regulating plate;
The length adjusting means includes a locking member that is locked to the lower portion of the front end regulating plate so that the locking height is variable, a window portion formed in the front end regulating plate, and a screw portion that is inserted through the window portion. The envelope supply device is provided with a plurality of support surfaces having different height positions, which support the screw portion inserted through the window portion . The envelope supply device according to claim 1, wherein the shaft center of the transport roller is set to be positioned substantially directly below the lower end edge of the envelope contact surface of the auxiliary regulating portion. The envelope supply device according to claim 1 or 2, wherein the auxiliary restricting portion has an envelope contact surface installed along a substantially vertical direction. The envelope supply device according to any one of claims 1 to 3, wherein the auxiliary regulating portion is suspended from the locking member. The envelope supply device according to any one of claims 1 to 4, wherein the auxiliary regulating portion is formed of a synthetic resin. The envelope supply device according to any one of claims 1 to 5, wherein the auxiliary restricting portion is formed of a low friction material. At least the envelope supply device according to any one of claims 1 to 6,
A sealing device comprising: an envelope processing unit that seals an envelope supplied from an envelope supply device.

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