JP3429020B2 - Packaging box tape sealing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tape-sealing of a packaging box used when a packaging box such as a cardboard box is closed and then sealed with a wide adhesive tape. Related to the device. 2. Description of the Related Art Generally, a cardboard box has a pair of inner lids which are folded from the left and right at the bottom and the upper part, respectively, and a pair of bottom lids and an upper lid which are closed and abutted from front and back to open. When the package is stored in this cardboard box and then tape-sealed in a completely sealed state, the inner lids at the bottom and the upper part are folded, and the bottom lid and the upper lid are closed. An adhesive tape is stuck, and further, the adhesive tape is stuck around the corners corresponding to the left and right sides of the bottom lid pair and the top lid pair so as to be wrapped around, and the entire tape is sealed in an H shape (this is referred to as H adhesion). are doing). At this time, the front and rear ends of the adhesive tape to be affixed to the lateral corners of the cardboard box are folded in a style (see FIG. 20). In order to automatically perform the tape sealing in such a form, the conventional apparatus uses an edge folding operation member in which the front and rear ends of an adhesive tape to be stuck to the lateral corners are driven and displaced by an actuator such as an air cylinder. Was. [0004] In the conventional device for driving and displacing the edge folding operation member by an actuator, the position of the cardboard box to be conveyed is electrically detected by a limit switch or various sensors to operate the actuator. It is necessary to take the timing to start, and the equipment becomes expensive, and when the transport speed changes, the timing tends to shift and the finish tends to be poor, and complicated control is required to perform this timing adjustment properly. Means were needed. The present invention has been made in view of such circumstances, and uses an adhesive tape in an appropriate folded state without using complicated and expensive electric control means. It is an object of the present invention to provide a packaging box tape sealing device that can be attached to a part. [0006] In order to achieve the above object, the present invention has the following arrangement. That is, the packaging box tape sealing device according to the present invention includes a transport mechanism for forcibly transporting the packaging box along a fixed path, and a predetermined length along one side of the lateral corner of the transported packaging box. Adhesive tape sticking mechanism that sticks the half width part of the adhesive tape around, and wraps the half width part of the tape front end and rear end around the box front and back, and the overhanging part at the tape front end is folded Front fold mechanism to fold, rear fold mechanism to fold the overhang at the rear end of the tape in a fold shape, and tape overhang between the front and back folds along the corners of the packing box and the side of the box And a front edge folding mechanism that is pressed and moved out of the path by abutting the starting lever that urges into the packing box conveyance path with the packing box being conveyed. In conjunction with, the folding operation member is forcibly displaced to the folding action position, and in conjunction with the activation lever being released from contact with the packing box and being urged into the packing box transport path, the folding operation is performed. The member is configured to be displaced backward to the non-operating position, and the rear edge folding mechanism is interlocked with the activation lever being released from contact with the packaging box and being urged into the packaging box transport path. Then, the folding operation member is forcibly displaced to the folding operation position, and the folding operation member is moved to the non-operation position in conjunction with the activation lever being pressed and moved out of the path by contact with the conveyed packing box. The adhesive tape folding and pasting mechanism is configured to gradually pack the tape overhang portion from the front end side with the forward movement of the packing box at a position below the front edge folding mechanism. It is constituted by installing a tape pressing guide member Yuku is folded in the box sides. According to the above construction, when the packaging box is transported along a fixed path, first, the adhesive tape sticking mechanism is operated and one side in the lateral corner portion of the packaging box transported. Along with this, a half-width portion of the adhesive tape having a predetermined length is stuck, and the half-width portions of the tape front end and rear end are wrapped around the box front and rear sides to be stuck (see FIG. 17). Next, as the packing box advances, the starting lever is pressed and moved out of the path by contact with the packing box to be conveyed, and in conjunction therewith, the folding operation member of the front ear folding mechanism performs a folding operation. The tape is forcibly displaced to the position, and the overhanging portion at the front end of the tape is folded in a fold shape (see FIG. 18). When the packing box further moves forward and the starting lever is disengaged from the rear end of the packed box to be conveyed, the starting lever is released from contact with the packing box and urges into the packing box transfer path and moves. In conjunction with this, the folding operation member of the rear ear folding mechanism is moved to the folding action position, and the overhanging portion at the tape rear end is folded in the shape of an ear fold (see FIG. 19). When the packing box further advances, the tape pressing guide member of the adhesive tape folding and sticking mechanism gradually folds and sticks the tape overhang portion from the front end side to the packing box side as the packing box moves forward. Is affixed to the lateral corner of the packing box with its front and rear ends folded inward (see FIG. 20). 1 to 3 show an entire embodiment in which the present invention is applied to a tape sealing device for a cardboard box. This apparatus basically includes a transport mechanism A for forcibly transporting a cardboard box (packing box) W along a fixed straight horizontal path, and a predetermined length along a lateral corner of the transported cardboard box W. An adhesive tape attaching mechanism B for attaching a half-width portion of the adhesive tape T and wrapping the half-width portion of the tape front end and the rear end around the front and rear surfaces of the box, and a protruding portion at the tape front end. A front ear folding mechanism C that folds the tape, a rear ear folding mechanism D that folds a flared portion at the rear end of the tape in a fold, and a tape flared portion between the front and rear folds is folded along the corner of the packing box. And four sets of sticking units consisting of an adhesive tape folding and sticking mechanism E to be attached to the side of the box, corresponding to the upper, lower, left and right portions of the cardboard box B transport path. Theory To. The transport mechanism A comprises a central double-row idle roller conveyor 1, left and right single-row idle roller conveyors 2a and 2b, and belt conveyors 3a and 3b driven independently by a motor M independently of right and left. Conveyors 1 and 2
a, 2b, the cardboard boxes W are placed sideways, and the cardboard boxes W are placed on the belt conveyors 3a, 3b from left and right.
And is forcibly transported. Left and right single row idle roller conveyors 2a, 2b
The left and right belt conveyors 3a and 3b are mounted on the left and right movable frames 4a and 4b, respectively, and the movable frames 4a and 4b slide on a pair of front and rear guide shafts 6 provided between the left and right main frames 5. Bearings 7a,
It is supported so as to be able to move left and right in parallel via 7b. The left and right slide bearings 7a, 7b are respectively connected and supported on the forward and backward paths of the chain 8 wound laterally, and one of the slide bearings 7a is screwed left and right by a screw shaft 10 which is rotated by a handle 9. It is configured to be sent. Further, the front and rear chains 8 are operated in synchronization with the left and right support shafts 11, respectively. Therefore, by rotating the handle 9 to rotate the front and rear chains 8 synchronously, the left and right slide bearings 7 are rotated.
a, 7b are laterally moved in opposite directions to each other, and the left and right single row idle roller conveyors 2 are moved to positions corresponding to the width of the cardboard box W.
a, 2b and the left and right belt conveyors 3a, 3b can be adjusted in position. FIG. 3 shows a state where the width is adjusted to the maximum width. The four sets of the pasting units all have the same structure, and here, the front upper side will be described as a representative. As shown in FIGS. 1, 4, and 8 to 11, the adhesive tape applying mechanism B is positioned before and after the material roll RT around which the adhesive tape T is wound, the guide roller 20, and the transport path. A front attaching roller 21, a rear attaching roller 22, a tape cutter 23 and the like are provided. The front sticking roller 21 and the rear sticking roller 22 are mounted on the free ends of swing arms 25 and 26 supported on a frame plate 24a so as to be able to swing up and down about fulcrums P1 and P2, respectively. Have been. The tape cutter 23 is attached via a cutter holder 28 to a free end of a swing arm 27 which is supported on a frame plate 24b opposed to the frame 24a at a fixed interval so as to be able to swing up and down about a fulcrum P3. . The swinging arms 25 and 26 are linked and connected by a link 29 so that the swinging arms 25 and 26 move in synchronism up and down in opposite directions, and are extended by a spring 30 extended between the frame plate 24a and the swinging arm 26. The swing arms 25 and 26 are biased such that their free ends protrude into a path along which the lateral corners of the cardboard box W move. Swing arm 2
5, a guide roller 31 for holding the adhesive tape T guided by the guide roller 20 and a spring piece 32,
Also, a left and right guide plate 33 for inserting and positioning the left and right adhesive tapes T is provided, and the front end of the adhesive tape T is attached with the front surface of the adhesive tape T facing the upper side of the transport path (right side in FIG. 4). It is guided and supported on the front surface of the roller 21.
The swing arm 27 is also urged by a spring 34 extending over the frame plate 24b so that its free end protrudes into a path along which the lateral corner of the cardboard box B moves, and
The left and right positions thereof are set such that the tape cutter 23 having the distal end formed into a corrugated blade faces the entire width of the adhesive tape T. The operation of the adhesive tape applying mechanism B is as follows. (1) As shown in FIG. 4, in the initial state where the cardboard box W does not arrive, the front attaching roller 21, the rear attaching roller 22, and the tape cutter 2 supporting the adhesive tape T are provided.
Numerals 3 are located at positions protruding into the movement path of the cardboard box W, respectively. At this time, the lowering limit is regulated by the swing arms 26 and 27 being supported by the stoppers 35a and 35b, respectively. (2) When the cardboard box W comes into contact with the front adhering roller 21, the front adhering roller 21 resists the spring 30 while a half-width portion at the front end portion ta of the adhesive tape T is stuck on the front surface of the cardboard box W. And retreat upward.
In addition, the rear attaching roller 22 also moves up and retreats accordingly. (3) When the cardboard box W is further advanced, the front attaching roller 21 rides on the cardboard box W as shown in FIG. 5, and attaches a half-width portion of the adhesive tape T. At this time, the rear attaching roller 22
Is on the movement path of the cardboard box W, and the swing arm 27 is pushed up by the cardboard box W, and the tape cutter 23 is retracted above the adhesive tape T. (4) Even if the cardboard box W is further advanced and the front sticking roller 21 is disengaged from the rear end of the cardboard box W, the front sticking roller 22 is still located on the cardboard box W while the front sticking roller 22 is still positioned on the cardboard box W. The sticking roller 21 is held at the raised position, and the adhesive tape T protruding from the rear end of the cardboard box W is in a tension state. Here, the swing arm 27 is moved to the cardboard box W.
The tape cutter 23 is lowered by the spring 34 and cuts the adhesive tape T which has been tensioned as described above. (5) When the cardboard box W is further advanced, the rear application roller 22 which is urged downward moves relative to the cardboard box W while being pressed from the upper surface to the rear surface as shown in FIG. And the rear end t of the adhesive tape T
The half width part of b is put around the back of the cardboard box W and pasted. With the above, one operation of sticking the adhesive tape is completed, the operation returns to the initial state, and preparations are made for arrival at the next box. Note that by slightly shifting the timing of the adhesive tape attaching operation between the upper one and the lower one, the load can be dispersed and the cardboard box W can be transported reliably without slipping. By applying the adhesive tape on the upper, lower, left, and right corners, the adhesive tape is attached in an H shape on the upper and lower surfaces of the cardboard box W as shown in FIG.
The H-shaped central portion T0 is an adhesive tape that has been applied in advance in another process along a butt line of the closed upper and lower lids Wa (and the bottom lid). As shown in FIGS. 12 to 15, the front ear folding mechanism C has a folding operation member 42 at one end of a swing arm 41 mounted on a support bracket 40 so as to be swingable about a vertical axis fulcrum P4. It is connected and fixed. The rear ear folding mechanism D is constructed by pivotally connecting a folding operation member 43 to the other end of the swing arm 41 so as to be swingable about a vertical axis fulcrum P5. The member 43 is urged to rotate in a counterclockwise direction in FIG. 13 by a torsion spring (not shown) mounted on the pivot portion. At the front of the support bracket 40, a start lever 44 is mounted so as to be swingable about a vertical axis fulcrum P6, and a support shaft 44a of the start lever 44 and a support of the swing arm 41 are supported. As shown in FIG. 14, the linking arm 4 provided at the upper end of each support shaft 44a, 41a is connected to the shaft 41a.
4b, 41b and the rod 45 for interlocking connection,
The starting lever 44 and the swing arm 41 are linked so as to swing in opposite directions. And the link arm 41
b The swing arm 41 is urged and oscillated counterclockwise and the activation lever 44 is urged and oscillated clockwise by a spring 46 provided between the free end and the support bracket 40. In the initial state in which the activation lever 44 is urged and oscillated, the end of the lever provided with the idler roller 47 is protruded from the side into the conveyance path of the cardboard box W, and the cardboard box to be conveyed. When the start lever 44 is pressed and moved outward by the contact with the W, as shown in FIG.
, The folding operation member 4 of the front ear folding mechanism C
2 is moved to the folding operation position close to the lateral side surface of the cardboard box W, while the folding operation member 43 of the rear ear folding mechanism D is configured to retreat to the non-operation position away from the conveyance path of the cardboard box W. Have been. The adhesive tape folding and sticking mechanism E is rotatable around the axis P7 in the front-rear direction on the frame 50 at a position below the front ear folding mechanism C, and is urged downward by a spring 51 to rotate. A tape pressing guide member 52 and a rear tape pressing guide member 54 rotatable about the longitudinal axis P8 and urged by a spring 53 toward the conveying path of the cardboard box W are provided. The overhanging portion tc of the adhesive tape T having a half-width portion affixed to the upper surface of the lateral corner portion of the cardboard box W is gradually wrinkled on the side of the cardboard box from the front end side as the cardboard box W moves forward. It is constituted so that it may be folded in step by step. Hereinafter, a series of pasting operations by the front ear folding mechanism C, the rear ear folding mechanism D, and the adhesive tape folding / pasting mechanism E will be sequentially described. (1) As described above, the cardboard box W affixed to the lateral corner with the half width portion of the adhesive tape T folded back and forth by the adhesive tape affixing mechanism B pushes the activation lever 44 outward. As a result, as shown in FIG. 13, the folding operation member 42 of the front ear folding mechanism C moves to the folding operation position, and the folding operation member 43 of the rear ear folding mechanism E retreats to the non-operation position. In this state, the front end of the cardboard box W approaches the front edge folding mechanism C. (2) The front end of the protruding portion tc of the adhesive tape T is relatively pushed backward by the folding operation member 42 of the front ear folding mechanism C, and as shown in FIG. Affixed to the lateral side of the box W. (3) When the cardboard box W moves forward and the activation lever 44 comes off the rear end of the cardboard box, the activation lever 44
Is free, the swing arm 41 is biased and rotated in the counterclockwise direction, the folding operation member 42 of the front ear folding mechanism D is retracted to the non-operating position, and the folding operating member of the rear ear folding mechanism E is The folding operation member 43 rotates to a position along the side surface of the cardboard box, whereby the rear end of the protruding portion tc of the adhesive tape T is folded as shown in FIG. Then, it is attached to the lateral side surface of the cardboard box W. (4) As described above, when the cardboard box W reaches the adhesive tape folding and sticking mechanism E in a state where the front and rear ends of the protruding portion tc of the adhesive tape T are folded and pasted, first, it is rotated downward. The bulged portion tc of the adhesive tape T is bent downward while being gradually pushed downward from the front portion by the urged front tape pressing guide member 52, and subsequently, the rear portion urged to rotate toward the box side. The overhanging portion tc of the adhesive tape T is bent at a right angle by the tape pressing guide member 54, and is stuck to the lateral side surface of the cardboard box W in a good manner as shown in FIG. The above operation is performed simultaneously in the upper, lower, left, and right lateral corners of the cardboard box W, and the tape sealing of the cardboard box W is completed by one pass. The four sets of sticking units (adhesive tape sticking mechanism B, front ear folding mechanism C, rear ear folding mechanism D, adhesive tape folding / sticking mechanism E) located on the upper, lower, left and right sides of the cardboard box W are as follows. Thus, it is possible to correspond to the height and the width of the cardboard box W. That is, as shown in FIGS. 1 and 3, a movable frame 61 which can move up and down along a column 60 erected from the main frame 5 is equipped with two sets of upper and lower left and right sticking units. A chain 62 connected across the upper end of the movable frame 61 and the movable frame 61 is bent around a guide roller 63 and a sprocket 64, and the sprocket 64 is rotated by a worm speed reduction mechanism 66 operated by a handle 65, By moving the chain 62 up or down, the movable frame 61
Is configured to be adjustable to any height. The movable frame 61 is horizontally supported so that it cannot move left and right and can rotate only.
A pair of front and rear screw shafts 67 wound around and interlocked with each other so as to be rotatable by a handle 68, and left and right movable frames 69a and 69b are screwed into oppositely threaded portions engraved on the left and right of the screw shaft 67. Each of the movable frames 69a and 69b is provided with an upper and a right sticking unit, so that the upper and the right sticking units can be adjusted according to the width of the cardboard box W. The lower two sticking units are respectively mounted on the slide bearings 7a and 7b which can be adjusted left and right to adjust the single row idle roller conveyors 2a and 2b and the left and right belt conveyors 3a and 3b. At the same time, the left and right positions of the two lower bonding units can be adjusted. As is apparent from the above description, according to the tape sealing device for a packing box according to the present invention, the front and rear ear folding operation members are utilized by utilizing the movement of the packing box itself being conveyed. Is driven and displaced, so that it can be implemented at a lower cost as compared with a conventional device using an electric control means. Moreover,
Since the operation timing of the ear-folding operation member is linked to the activation lever that moves by contacting and releasing with the packing box,
Even if the transport speed of the packing box changes, the operation timing is hardly shifted, and the tape sealing with a good finish can always be performed by the stable edge folding operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view showing a packing box tape sealing device according to an embodiment. FIG. 2 is a schematic plan view showing a tape sealing device for a packing box. FIG. 3 is a front view showing a tape sealing device for a packing box. FIG. 4 is a side view showing an initial state of the adhesive tape attaching mechanism. FIG. 5 is a side view showing a sticking start state of the adhesive tape sticking mechanism. FIG. 6 is a side view showing a state near the end of the application of the adhesive tape applying mechanism. FIG. 7 is a side view showing a state immediately before the end of the application of the adhesive tape applying mechanism. FIG. 8 is a front view showing the vicinity of a front application roller of the adhesive tape application mechanism. FIG. 9 is a plan view showing a tape guiding means in the adhesive tape attaching mechanism. FIG. 10 is a front view showing a cutter portion in the adhesive tape attaching mechanism. FIG. 11 is a front view showing the vicinity of a rear attaching roller in the adhesive tape attaching mechanism. FIG. 12 is a side view showing front and rear ear folding mechanisms and an adhesive tape folding / pasting mechanism. FIG. 13 is a plan view showing front and rear ear folding mechanisms and an adhesive tape folding / pasting mechanism. FIG. 14 is a plan view showing a part of the front and rear ear folding mechanisms. FIG. 15 is a front view showing the vicinity of an activation lever in front and rear ear folding mechanisms. FIG. 16 is a plan view showing an operation state of the rear ear folding mechanism. FIG. 17 is a perspective view showing an initial state of a step of attaching an adhesive tape at a lateral side corner. FIG. 18 is a perspective view showing a front edge folded state in a step of attaching an adhesive tape at a lateral side corner. FIG. 19 is a perspective view showing a rear edge folded state of an adhesive tape attaching step at a lateral corner. FIG. 20 is a perspective view showing a state where the adhesive tape has been attached. [Description of Signs] 42 Folding operation member 43 Folding operation member 44 Activation lever 52 Tape pressing guide member 54 Tape pressing guide member A Transport mechanism B Adhesive tape pasting mechanism C Front ear folding mechanism D Rear ear folding mechanism E Adhesive tape folding / pasting Mechanism T Adhesive tape W Packing box (cardboard box)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65B ⁷ /00-7/28 B65B 51/00-51/32

Claims (1)

(57) [Claims 1] A transport mechanism for forcibly transporting a packaging box along a fixed path, and a predetermined length along one side of a lateral corner of the transported packaging box. Attach the half-width part of the adhesive tape, wrap the half-width part of the tape front end and the rear end around the front and back of the box, and fold the overhang at the front end of the tape into a fold A front edge folding mechanism, a rear edge folding mechanism that folds the overhanging portion at the rear end of the tape in a fold shape, and a tape overhanging portion between the front and rear edge folds are folded along the corners of the packing box to be on the side of the box. An adhesive tape folding and sticking mechanism to be attached, wherein the front edge folding mechanism is pushed and moved out of the path by abutting the starting box that urges into the packing box transfer path with the packing box to be transferred. Linked to To forcefully displace the folding operation member to the folding action position, and disengage the folding operation member in conjunction with the activation lever being released from contact with the packing box and urging and moving into the packing box transport path. The rear ear folding mechanism is folded in conjunction with the release lever being released from contact with the packing box and being urged and moved into the packing box transport path. The operation member is forcibly displaced to the folding operation position, and the folding operation member is displaced backward to the non-operation position in conjunction with the activation lever being pressed and moved out of the path by contact with the conveyed packing box. The adhesive tape folding and sticking mechanism, the tape overhang portion at the lower part of the front ear folding mechanism gradually from the front end side to the side of the packing box with the forward movement of the packing box. Are constituted by installing a tape pressing guide member yuku in silicon, tape sealing device of the packaging box, characterized in that.