JP2990375B2 - Automatic box making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an automatic box making machine, and in particular, expands a box material such as a cardboard box folded into two flat sheets by extending a flap into a rectangular tube shape. The present invention relates to an automatic box making machine that opens, bends a bottom flap of a box material, and seals the bottom flap with an adhesive tape.

(Prior Art) A similar device of this kind is disclosed in Japanese Patent Application Laid-Open No. 1-99929. The configuration and operation of this device
This will be described with reference to FIG. 9 and FIG.

A magazine 211 that accumulates flat folded box materials B,
A folding box feeding section 213 provided on the upper surface with a feeding claw 212 for taking out and transferring the box pieces B folded one by one from the bottom of the magazine 211 is provided. An open box 214 is provided in connection with the edge of the folded box material feeding unit 213, and the open box 214 has a suction pad device 215 for sandwiching the inner and outer flaps of the folded box material. Further, a device 216 for holding both side surfaces of the box material B opened by the suction pad device 215, a blade device 217 for bending both side flaps, and a blade device 218 for bending both outer flaps are provided. I have. In the open box 214, a box material B having a bottom formed by the above-mentioned devices is attached with a tape attaching unit 21.
Upper and lower feeding claw devices for transferring to the inside 9 are provided inside the hollow beam 221 and above the gantry 220. The tape sticking unit 219 is provided with a sealing device for sticking the tape along both outer flaps while the box B is moving.

Box B folded flat and integrated in magazine 211
The lowest box material is sent to the open box 214 by the feed claw 212. Here, the lower side surface of the box material B is fixed by the fixed suction disk, and the upper side surface is sucked by the movable suction disk to be caused at a right angle. by this,
The box material B has been expanded into a rectangular tube shape. The inner flaps at the bottom of the box are then folded, and the outer flaps are folded to form the bottom.

The box material with the bottom formed is transferred to the tape sticking unit 219 by the upper and lower feeding claw devices, and while the box material is moving, the tape is stuck by the tape sticking unit 219 across the joint of both outer flaps, It is sent out.

(Problems to be Solved by the Invention) However, in the above-mentioned apparatus, the flap is in a state in which the flap is inflated outward while the box material having the bottom is moved by the feeding claw device, and in this state, the tape is applied by the tape applying unit. However, since the edges of the outer flaps hit the joints, the tapes were stuck without the ends of the outer flaps abutting neatly, and an incomplete bottom portion was formed.

Originally, the width of the bottom of the box material such as a cardboard box was slightly smaller than the width of the box itself to prevent a gap from being formed at the joint of the outer flaps due to the weight of the contents. The large size also causes the above problem to occur easily.

The object of the present invention is to prevent the occurrence of the above-mentioned inconveniences, accurately perform tape attachment of the outer flap joint at the bottom of the box material,
The complete formation of the box bottom.

(Means for Solving the Problems) In order to achieve the above object, the present invention has the following configuration. That is, a base accommodating the control device, a box supply unit connected to the base, and a box bottom provided on the base, forming a bottom of the box supplied from the box supply unit. Forming unit, provided so as to be movable to the box material forming unit by a moving means provided on the gantry, affixes the bottom of the box material held on the box material forming unit with a tape, and affixes a tape. And a tape sticking unit for sending the later box material out of the gantry unit. The tape sticking unit has a simultaneous folding member at a front end thereof, and is divided into two at a rear end thereof, each of which is independently displaced. The tape tracing member is provided.

Further, the box material supply unit is configured to vertically arrange the box materials in a folded state, and the box material forming unit expands the folded box material into a rectangular cylindrical shape penetrating in a horizontal direction. The tape applying unit is configured to apply a tape to a vertical surface.

(Operation) With such a configuration, the boxes stacked on the box supply unit are moved one by one to the box bottom forming unit by the box supply unit, and the bottom flap of the box is bent. The tape sticking unit is moved to the box material by the moving means while the bottom is formed and gripped, and the tape is stuck to the box material bottom. At this time, since the tape is applied while the box material is firmly grasped by the box bottom forming unit, the bottom of the box material can be completely formed. Further, a simultaneous folding member is provided at the front end of the tape sticking unit, whereby the bottom flap immediately before the tape sticking is bent accurately, and then the tape is stuck. With a tape tracing member that is divided into two and each displaces independently,
The tape tracing member independently traces each of the abutted flaps, so that the tape can be stuck more securely.

Further, since the box supply unit is configured to vertically arrange the boxes in a folded state, the stack of the boxes extends upward when the stock amount of the box increases. The box material stocked in such a state is moved to the box bottom forming unit while maintaining the stocked posture, and is expanded in the box forming unit into a rectangular tube penetrating in the horizontal direction. When the flaps of the expanded box material are bent in such a state, the abutting portion of each flap forms a continuous surface in the vertical direction. Therefore, the tape is attached by the tape attaching unit that attaches the tape to the vertical surface, thereby completing the sealing of the flap.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 4, reference numeral 1 denotes a gantry,
It is in the form of steps, and the front part is a low step part 1 when viewed from the front
a, the rear part is a high step part 1b. The control device 2 is built in the low step portion 1a. A box material W to be assembled is stacked and mounted on the high step portion 1b. Therefore, when the stock amount of the box material W increases, the stack of the box materials extends upward. A box supply unit 4 for transferring the boxes W stacked in this state to the box bottom forming unit 3 on the gantry 1 one by one is provided continuously. A top plate 5 is continuously attached to the upper surface of the high step portion 1b and the box material supply unit 4. A vertical guide plate 6 is provided upright at a boundary between the box material bottom forming unit 3 and the box material supply unit 4. The gap between the lower edge of the vertical guide plate 6 and the top plate 5 is a gap through which one folding box material W can pass. The vertical guide plate 6 is formed in an L-shape, and presses the right-angled portion of the folded box material W against the corner portion to be stacked and placed.

At both ends of the front end of the low step portion 1a of the gantry 1, hollow pillars 7 are provided.
7 is erected vertically, and the upper ends of both struts 7, 7 are hollow beam members 8
Are linked by Screw nuts 9, 9 are rotatably attached to the inside of the hollows of both columns 7, 7 by fixtures. In addition, guide shafts 10, 10 are attached to the posts 7, 7 via brackets 11, 11 in parallel with the screw nuts 9, 9, respectively. Upper horizontal members for screw nuts 9, 9 and guide shafts 10, 10
12 and a lower horizontal member 13 are provided. Inside the hollow beam member 8, a connecting rod 15 for transmitting the rotation of the handle 14 to the screw nuts 9, 9 and bevel gears 16 provided at both ends of the connecting rod 15 are provided.

The pitch of the upper screw nut 9a for vertically moving the upper horizontal member 12 is formed to be twice the pitch of the lower screw nut 9b for vertically moving the lower horizontal member 13. Therefore, for example, when the upper horizontal member 12 moves 10 cm by the rotation of the handle 14, the lower horizontal member moves 5 cm. These are essential for forming the bottoms of boxes of various sizes.

Here, the box material supply unit 4 will be described. A screw nut 42 connected to a handle 41 on the same surface as the low step portion 1a of the gantry 1 and guide shafts 43 on both sides thereof.
Is fixed. A rodless cylinder 45 with a guide is attached to the screw nut 42 and the guide shaft 43 via an attachment member 44. Further, a movable plate 46 is attached to the rodless cylinder 45, and three feed claws 48 are respectively provided on the movable plate 46 via the air cylinder 49 in correspondence with the three long holes 47 opened in the top plate 5. It is provided in. When the air cylinder 49 is actuated, the feed claw 48 projects from the top plate 5 by one folded box material. The origin position of the feed claw 48 is adjusted by the handle 41 via the screw nut 42 according to the depth of the box material. The box material W is pressed against the corner portion of the vertical guide plate 6 by the bar member 6a and is tied.

Next, the box bottom forming unit 3 will be described with reference to FIG. 50 is a vacuum pad device. A cylinder 51 is provided on the low step portion 1a of the gantry 1 with its base end pivotally supported,
The extending and contracting end portion is pivotally supported by a link member 54 fixed to a horizontal member 53 having one end rotatably supported by a vertical support member 52 erected on the low step portion 1a. Vertical support member
The height of 52 is such that the tip of the horizontal member 53 is slightly higher than the rear part 1b of the gantry 1. At the other end of the horizontal member 53, a rotating member 56 having a vacuum pad 55 at a right angle and integrally provided at the tip is attached. When the cylinder 51 is operated to extend the distal end, the link member 54 rotates 90 degrees counterclockwise around the distal end of the vertical support member 52 as a fulcrum. As a result, the horizontal member 53 rotates, so that the rotating member 56 is in a vertical state with respect to the gantry 1, and the vacuum pad 55 is open at the tip of the rotating member 56 in the horizontal direction with respect to the gantry 1.
When the tip of the cylinder 51 is shortened, the link system performs the reverse movement, and the vacuum pad 55 comes into contact with the surface of the upper stage 1b of the gantry 1. Upper stage 1b corresponding to this vacuum pad 55
Is opened in a circular shape, and a vacuum pad (not shown) is provided facing the opening so as to be able to protrude and retract by a fluid pressure cylinder.

A frame 60 is welded to the upper horizontal member 12 in the shape of an inverted mountain horizontally and in the direction of the vertical guide plate 6. flame
The left 60 through the actuator m ₁ flap folding member 61
Right inner flap folding member 62 is mounted via an actuator m ₂ to the position adjusting device 63 to be described later is installed in the frame 60 with is attached. The inner flap folding members 61 and 62 rotate inward by driving the actuators m ₁ and m ₂ , respectively, and perform a work of folding the inner flaps.

The position adjusting device 63 of the right inner flap folding member 62 is configured as shown in FIG. The screw nut 64 is attached to the frame 60 at one end by a pillow unit 65 and at the other end by a bearing 67. Screw nut 64
Is connected to a handle 66 at one end. A guide shaft 68 is attached to the frame 60 with both ends supported by bearings 69 in parallel with the screw nut 64. The plate member 70 is attached to the screw nut 64 and the guide frame 68 so that the plate member 70 is bridged.
Right inner flap folding member 62 is provided via a m _2.
Therefore, by rotating the handle 66, the right inner flap folding member 62 can be moved in the left-right direction, and can correspond to the size of the box material.

Further, an upper outer flap folding members 72 are attached via brackets 71 and the actuator m ₃ in the frame 60. The upper outer flap folding member 72 rotated to the vertical position from the horizontal position by driving of the actuator m _3, performs the task of folding the upper outer flap of a box member W on the inside.

Further, a holding member 76 is welded to the frame 60 via a bracket 75. The holding member 76 suppresses the movement of the box material when the box material is formed.

The support member 80 in the lower portion 1a of the base 1 is erected, the lower outer flap folding member 82 is mounted rotatably through the actuator m ₄ at its upper end, the actuator
by driving the m _4, the outer flap folding member 82 is rotated to the vertical position from the horizontal position, performs the task of folding the lower outer flap of a box member on the inside.

Next, a description will be given of a moving unit 90 for reciprocating a tape attaching unit 100 to be described later left and right.

The moving means 90 includes, as shown in FIG.
91, belt 92 driven by electric motor 91, belt 92
Guide rail 93 laid on the lower horizontal member 13 in parallel with
It is composed of A sprocket 97 is fixed to the output shaft of the electric motor 91. A sprocket 94 is attached to the lower horizontal member 13 right above the sprocket 97,
A sprocket 95 is provided on the lower horizontal member at the right end on the same plane as the sprocket 94. Further, a guide wheel 96 is attached to the lower horizontal member 13 via a bracket on the right oblique side of the sprocket 93 and on the same vertical plane. Therefore, the belt 92 is guided and moved along the three sprockets and one guide wheel by the driving of the electric motor 91. Accordingly, the tape attaching unit 100 connected to the belt 92 by appropriate means can smoothly reciprocate on the guide rail 93 following the belt 92.

Next, the tape sticking unit 100 will be described with reference to FIG.

A shaft 102 and a shaft 103 are provided at left and right positions of the frame 101, and a first swing arm 104 is mounted on the shaft 102, and a second swing arm 105 is mounted on the shaft 103. The first swing arm 104 has a rotatable sticking roller 106 on the side of the vertical guide plate 6, and is operably swingable from a starting position perpendicular to the frame 101 to a range where it is immersed in the frame 101. The other end of a spring 107 having one end fixed to the frame 101 is hooked to the first swing arm 104, and is urged so as to hold the sticking roller 106 at the starting position. Further, the opposite side of the attaching roller 106 of the first swing arm 104 is connected to an intermediate portion of the second swing arm 105 and a connecting rod.
Connected by 108. The second swing arm 105 having the sticking roller 109 on the side of the vertical guide plate 6 is capable of swinging about a shaft 103 as a fulcrum in a range where it is immersed in the frame 101 from a position perpendicular to the frame 101 whose operation is regulated by the stopper 110 Operate.

Between the first swing arm 104 and the second swing arm 105, the cutter 112 together with the abutment plate 111 cuts the adhesive tape after passing through the box W, leaving an appropriate sticking length on the bottom of the box. As described above, the contact plate 111 is axially attached to the shaft 113, and is constantly urged to rotate in the direction of the vertical guide plate 6 by the spring 114. The adhesive tape T is placed on a reel 116 attached to a connecting plate 115 connected to the frame 101, and a plurality of guide rollers 117 provided on the frame 101 and a guide roller fixed to the first swing arm 104. It is guided to 118 and pulled out to the adhesive roller 106.

At the left end of the frame 101, a simultaneous folding member 119 is disposed substantially parallel to the longitudinal direction of the frame 101. The simultaneous folding member 119 is formed of a flat plate having curved left and right ends. Immediately before the adhesive tape T is attached to the box W, the outer flap of the box is folded inward and the mating surface is properly joined. It is to let. A tape tracing member 120 is provided at the right end of the frame 101, and one end thereof is
21 and is hooked on the stem 122, and the middle part is the stem 1
Locked to 23. The spring 121 is urged so that the tape tracing member 120 always projects from the frame 101. The tape tracing member 120 is adhered to the box material W, and strongly traces the cut adhesive tape T from above to secure the tape to the box material. In the case of the present embodiment, as shown in FIG. 6, each of the plate members is constituted by two plate members, and each plate member is elastically supported by the spring 121. Each plate 120 will trace. In addition,
Two divided rollers can be used as the tape tracing member 120. Further, at the right end of the frame 101, a box moving bar member 124 is attached at one end to the frame 101.
Pivotally pivoted to one end of the frame
The other end of the spring 125 locked to 101 is hooked and provided by being pressed against the stopper 125. The box material transfer bar member 124 is a box material W on which tape has been attached after all the work is completed.
At the same time as the tape sticking unit 100 returns to the starting position, and moves the box material W by hooking it on the tip thereof.

130 is the tape sticking unit 100 and the belt 92 of the moving means 90
And a connecting member connected to the guide rail 93.

Next, the operation of the present embodiment configured as described above will be described.

First, before the operation of the device, the size of the box material W (see Fig. 7)
Adjust the device according to the following. The handle 14 is turned to move the upper horizontal member 12 and the lower horizontal member 13 up and down to match the width of the box W when it is opened. At this time, the center of the tape set in the tape sticking unit 100 and the mating surface of the outer flap of the box material should match, and the holding member
76 is slightly pressed against the front side wall of the box material W. next,
By rotating the handle 66, the position of the rear inner flap folding member 62 is adjusted to match the depth of the box W. further,
By rotating the handle 41, the starting position of the feed claw 48 is adjusted to match the height and width of the box W.

Next, a plurality of boxes W to be assembled are stacked and mounted on the top plate of the box supply unit 4, and pressed against the corners of the vertical guide plate 6 by the bar member 6a to arrange them. This completes the manual preparation, and then enters the automatic operation of the device.

When the start button of the device is pressed, the air cylinder 49 is operated, and the feed claw 48 is protruded from the top plate 5 by the height of one folded box material W. In this state, the rodless cylinder 45
Is operated, the feed claw 48 moves along the elongated hole 47, and only one folded box material W is moved from the gap between the top plate 5 and the vertical guide plate 6 to the upper step portion 1b of the box material bottom forming unit 3. On the top plate 5. Next, the vacuum pad device 50 operates. That is, the rod of the cylinder 51 is shortened, and the vacuum pad 55 is attracted to the upper surface of the folded box W. When the rod of the cylinder 51 is extended, the box W is rotated 90 degrees counterclockwise while being attracted to the upper surface of the box W, so that the box W is expanded into a rectangular cylindrical shape. At this time, the back surface of the folded box material W is suction-fixed by a vacuum pad (not shown) slightly projecting from the opening formed in the top plate 5. Therefore, the box material W expanded on the square tube
Are fixed on both sides by the two vacuum pads and the pressing member 76. In this state, the flap folding operation and the adhesive tape adhering operation are performed.

First, the actuator m ₁ is driven, front inner flap folding members 61 folded to the left inner flap at a right angle to 90 degrees rotation in a parallel state from the orthogonal state with the longitudinal direction of the upper lateral rack member 12. At the same time the actuator m ₂ is driven, the right inner flap folding members 62 folded right in the flap at a right angle to 180 degrees rotation in the parallel state from the parallel state with the longitudinal direction of the upper lateral rack member 12. At this time, the front ends of the left and right inner flap folding members 61 and 62 are in an opposed state. Next, the actuator m ₄ is driven, the lower outer flap folding member 82 is 90 degrees rotation in a vertical position from the horizontal position, folding the lower outer flap at a right angle, to hold the lower part of both the flaps. In this state, the actuators m ₁ and m ₂ are reversely rotated, and the inner flap folding members 61 and 62 are retracted to the starting position. Then, the actuator m ₃ is driven, the upper outer flap folding member 72 is 90 degrees rotation in a vertical position from a horizontal position, folded upper outer flap at a right angle.

Next, the electric motor 91 is started and the belt 92 is rotated, so that the tape applying unit 100 is guided by the belt 92 and the guide rail 93 and moved to the holding position of the box W. In FIG. 5, the tape applying unit 100 moves in the direction A, and the simultaneous folding member 119 moves while tracing along the mating surface of the upper and lower outer flaps, eliminating the overlap of the mating surfaces. Next, the adhesive tape T is
Is attached to the center of the right side wall of the box material W, and when further proceeding, the attaching roller 106 is rotated rightward about the shaft 102 as a fulcrum and immersed in the frame 101 while being attached to the mating surface of the box material W. The adhesive tape T pulled out from the reel 116 is attached. At this time, the attaching roller 109 rotates leftward with the shaft 103 as a fulcrum and contacts the mating surface of the box material W while being immersed in the frame 101, and the contact plate 111 also moves rightward with the shaft 113 as a fulcrum. While rotating and immersing in the frame 101, it is in contact with the abutment surface of the box material W. Further, when the affixing of the tape on the abutment surface is completed and the contact plate 111 is separated from the box material W, the tape is rotated leftward about the shaft 113 by the urging force of the spring 114, and is attached to the box material W. The adhesive tape T between the rollers 106 is cut while leaving an appropriate length. The uncut tape is stuck on the left side wall of the box W by the sticking roller 109 when the second swing arm 105 rotates rightward about the shaft 103 as a fulcrum. The adhesive tape T adhered to the mating surface of the box material W is traced on the adhesive tape T by the tape tracing member 120, so that the tape is strongly adhered.

When the operation of attaching the adhesive tape T is completed, the electric motor 91
Is reversed, and the tape applying unit 100 moves in the direction B and returns to the starting position. At this time, the box material W is the frame 1 of the unit 100.
01 is moved in the direction B together with the unit 100 by the box moving bar member 124 provided at the right end, and is sent out of the automatic box making machine.

By repeating the above operation, the folded box material is automatically assembled into an assembly box having a bottom.

(Effect of the Invention) As is apparent from the above description, the flap at the bottom of the box is folded by the box bottom forming unit, and the tape attaching unit is moved there while holding and holding the flap at the bottom of the box. Since the tape is adhered, the tape can be accurately adhered to the outer flap abutting surface of the bottom of the box, and the bottom of the box can be completely formed. Furthermore, a simultaneous folding member and a tape tracing member are attached to the tape sticking unit, and the tape tracing member is divided into two and each is independently displaced, so that for each of the abutted flaps, By tracing each plate,
Adhesion of the tape can be more reliably performed. Moreover, since the box supply unit adopts a configuration in which folded box members are vertically stacked, the stack of box materials extends upward when the stock amount of the box material increases. Therefore, even if the stock amount of the box material increases, the floor area required for the mounting place does not increase. For this reason, the floor area required for installing the apparatus does not increase or decrease according to the amount of the box material to be stocked, and it is not necessary to secure a wide installation area in advance in anticipation of an increase in the stock amount. In addition,
Since the box material forming unit and the tape sticking unit adopt a configuration corresponding to the box material stocked in such a state, it is possible to reliably seal the flap.

[Brief description of the drawings]

FIG. 1 is a front view of an automatic box making machine showing one embodiment of the present invention,
FIG. 2 is a plan view of FIG. 1, FIG. 3 is an enlarged view showing a box bottom forming unit, FIG. 4 is a plan view of FIG. 3, FIG. FIG. 7 is a side view taken along the line II of FIG. 5 and FIG.
FIG. 8 is a perspective view showing a state in which the bottom of the box material is formed, FIG. 8 is a front view showing a conventional example, and FIG. 9 is a plan view of FIG. DESCRIPTION OF SYMBOLS 1 ... Stand, 2 ... Control device, 3 ... Box bottom forming unit, 100 ... Tape sticking unit, 119 ... Simultaneous folding member, 120 ... Tape tracing member, W ... Box material

Claims (2)

(57) [Claims] 1. A gantry on which a control device is housed, a box supply unit connected to the gantry, and a bottom of a box supplied from the box supply unit are provided on the gantry. Box bottom forming unit, and is provided movably to the box forming unit by the moving means provided on the gantry, and the tape is attached to the bottom of the box held on the box forming unit by tape, It consists of a tape sticking unit that sends out the box material after tape sticking out of the gantry unit,
An automatic box making machine having a simultaneous folding member at a front end of the tape adhering unit and a tape tracing member which is divided into two and is independently displaced at a rear end thereof. 2. The box material supply unit is for vertically arranging folded boxes in a stacked state, and the box material forming unit is a rectangular tube that penetrates the folded box horizontally. The automatic box making machine according to claim 1, wherein the tape applying unit applies a tape to a vertical surface.