JP6576721B2 - Box making machine - Google Patents

Description

  The present invention is to manufacture a box having a cylindrical body, a plurality of lower flaps provided at the lower edge of the body, and a plurality of upper flaps provided at the upper edge of the body. Concerning a box machine.

  In a box having a polygonal cylindrical body, a plurality of lower flaps provided on the lower edge of the body, and a plurality of upper flaps provided on the upper edge of the body, an improvement in load resistance in the vertical direction In addition, for the purpose of reducing the buffer material by reducing the internal dead space, there is one in which the body section has an octagonal cross section. Since a box having such an octagonal body has more folding lines formed in the body than a box having a quadrangle body, the body can be formed into a predetermined shape. difficult. Therefore, in order to form such a box, a case forming device that can be expanded is inserted inside the body, and the case is expanded from the inside by expanding the case forming device, thereby forming a predetermined shape. A box making machine has been proposed (for example, Patent Document 1).

JP 20144813 A

  However, a box making machine having a case forming device that pushes the body from the inside is relatively large and has a problem that the configuration of the device is complicated. In particular, when it is possible to store articles in the body during the box making process, it is necessary to remove the case forming apparatus from the body and retract the case forming apparatus to a position that does not hinder the operation of storing the articles. As a result, the problem arises that the time required for the start of the housing operation becomes longer as the size of the container increases. Due to such problems, it is difficult to apply the case forming apparatus to a box making machine that can accommodate articles in the box making process. Further, the case forming apparatus is an apparatus specialized for forming a predetermined octagonal box, and has a problem of low versatility.

  In view of the above background, an object of the present invention is to simplify the structure of a box-making machine and enable box-making of various shapes of polygonal cylindrical boxes.

  In order to solve the above-described problem, an aspect of the present invention is a polygonal cylindrical trunk (2PA to 2PH) extending vertically and a plurality of upper flaps (2UA to 2UD) provided on the upper edge of the trunk. And a plurality of lower flaps (2LA to 2LD) provided at the lower edge of the trunk portion, and the lower front flap (2LA) provided at the lower edge of the front portion of the trunk portion, Includes a rear lower flap (2LC) provided at the lower edge of the rear portion, a lower left flap (2LB) provided at the lower edge of the left portion, and a lower right flap (2LD) provided at the lower edge of the right portion. A box making machine (1) for making a box (2), which has a base (13) extending in the front-rear direction and a rotation shaft provided on the left and right sides of the base and extending in the front-rear direction. And a pair of left and right flap folding members (4 ), The box part is opened in a generally cylindrical shape, the front lower flap is bent rearward from the body part, and the lower right flap is directed forward from the body part. And the lower left flap and the lower right flap are suspended from the trunk, and are placed on the base in the front lower flap and the rear lower flap, and the left and right flap folding members are By turning inward to the left and right, the front edge of the lower left flap and the lower right flap is locked in the locking portion, and the lower left flap and the lower right flap are bent at a right angle with respect to the body portion, and The front edge of the lower left flap and the lower right flap are arranged in the center in the left-right direction of the body part, so that the body part is expanded in the left-right direction and the shape of the body part is adjusted. To. Here, the box making machine is an apparatus for forming a box folded in a flat shape into a predetermined three-dimensional shape, and a sealing machine for sealing the box formed in a predetermined three-dimensional shape on the downstream side. May be included.

  According to this aspect, the front edge of the left and right lower flaps is locked to the flap bending member and disposed at a predetermined position in a bent state, so that the body portion moves following the left and right lower flaps. , And molded into a predetermined shape. When the trunk portion is formed by the flap bending member, the inside of the box is opened upward, so that the article can be easily accommodated. Further, since the molding apparatus is not inserted inside the body portion, there is no need for a drive mechanism for inserting and removing the molding apparatus, and the box making machine can be simplified and miniaturized.

  Further, in the above aspect, the flap bending member has an inclined portion (47D) inclined in a direction away from an outer surface of the lower left flap and the lower right flap at a distal end portion, and the locking portion is the inclined portion It is good to have a nail | claw part (49A) which protruded from the front-end | tip of the part to the said lower left flap and the said lower right flap side.

  According to this aspect, the left and right lower flaps are bent by the flap bending member, and when each approaches horizontal, the leading edge of each lower flap is detached from the locking portion, and the leading edges are in contact with each other. Become. Thereby, the shape of the box is maintained.

  Further, in the above aspect, the base has an upper plate (13A) whose main surface faces up and down and extends forward and backward, and a lower wall (13B) that hangs down from the lower surface of the upper plate and extends forward and backward. Good.

  According to this aspect, in a state where the left and right lower flaps are bent until they become horizontal, the leading edges of the left and right lower flaps face each other across the lower wall. Therefore, the left and right lower flaps do not overlap each other, and the box shape is maintained.

  Moreover, said aspect WHEREIN: The said latching | locking part may be formed in the U shape surrounding the both surfaces and end surface of the front-end | tip part of the said lower left flap and the said lower right flap.

  According to this aspect, the locking of the leading edge of the left and right lower flaps by the locking portion is further ensured. Thereby, also when the rigidity of the left and right lower flaps is relatively low and each lower flap is easily bent, the detachment of the lower flap from the locking portion is suppressed.

  Further, in the above aspect, a front stopper and a rear stopper disposed at a distance from each other in the front-rear direction above the base, the rear stopper moves forward and backward, and the front stopper and The body portion may be sandwiched between the two.

  According to this aspect, when the box is pushed right and left by the flap bending member and the box is formed, the rear stopper cooperates with the front stopper and presses the box in the front-rear direction. The body is molded with higher accuracy.

  Further, in the above aspect, a transport device (60) provided on the front side of the base and supporting the box from below the lower left flap and the lower right flap, and the mounting device mounted on the base And an extruding device (34) that pushes the box from the rear to the front and moves the box onto the conveying device, and the front stopper is provided so as to be retractable below the box supported by the base. It is good to have been.

  According to this aspect, the molded box is sent to the conveying device by the operation of the box making machine.

  Further, in the above aspect, a lower taping unit that attaches an adhesive tape extending in the front-rear direction to the opposing left ends of the lower left flap and the lower right flap with respect to the box transported forward by the transport device ( 62).

  According to this aspect, the lower part of the molded box is sealed with the adhesive tape.

  Further, in the above aspect, the upper flap is provided at the upper edge of the left and right side portions of the body portion, and the upper left flap (2UB) and the upper right flap (2UD) whose front end surfaces are opposed to each other in the center in the left-right direction. And an upper taping unit (63) for attaching an adhesive tape extending forward and backward to the mutually opposing tip portions of the upper left flap and the upper right flap with respect to the box that is conveyed forward by the conveying device. Good.

  According to this aspect, the upper part of the molded box is sealed with the adhesive tape.

  Further, in the above aspect, the body portion has a front panel (2PA) that is disposed on the front side and has a main surface facing front and rear, and contacts the front panel of the box that is transported forward by the transport device. A straightening device (61) that touches and corrects the shape of the box may be further included.

  According to this aspect, the shape of the box passing through the transport device is corrected by the correction device.

  In the above aspect, the correction device includes a base (61A), an arm (61B) supported by the base so as to be rotatable about a rotation shaft extending in the left-right direction, and a left-right extension at the tip of the arm. A roller (61D) that is supported rotatably about a rotation axis and extends to the left and right, and an urging member (61E) provided between the base and the arm, The roller can rotate between a protruding position where the box can be brought into contact with the front panel of the box conveyed forward by the transfer device and a retreat position where the roller is retracted above or below the box. The urging member urges the arm toward the protruding position, and the arm is pressed by the roller against the front panel of the box that is conveyed forward by the conveying device. Above It may be moved to the retracted position against the urging force of the energizing member.

  According to this aspect, the correction device moves to the retracted position in accordance with the movement of the box and does not stop the box that is being transported. Therefore, the correction device does not need to be controlled by a control device or the like, and the configuration of the box making machine is not complicated.

  Moreover, said aspect WHEREIN: It is good for the said correction | amendment apparatus to be arrange | positioned at least one of the upper direction of the said box conveyed below by the said conveying apparatus, and the downward direction.

  According to this aspect, the position of the correction device can be arbitrarily changed according to the shape of the box.

  According to the above configuration, the structure of the box making machine is simplified, and box making of polygonal cylindrical boxes having various shapes is possible.

The perspective view of the box making machine concerning an embodiment The perspective view which shows the lower part of the molding part of the box making machine which concerns on embodiment The perspective view which shows the (A) right side of the box making machine which concerns on embodiment, and the (B) left side rear side stopper. The perspective view which shows the front side stopper of (A) right side and (B) left side of the box making machine which concerns on embodiment. The perspective view which shows the trunk | drum press apparatus of the box making machine which concerns on embodiment The perspective view which shows the flap part press apparatus of the box making machine which concerns on embodiment Sectional drawing which shows the example of the latching | locking part of the flap press member which concerns on (A)-(C) embodiment. Sectional drawing which shows the (A) initial position of the flap part press apparatus of the box making machine which concerns on embodiment, and the position after (B) drive The perspective view which shows the taping part of the box making machine which concerns on embodiment The perspective view which shows the correction apparatus of the taping part which concerns on embodiment (A) Perspective view showing sealing form of octagonal box, (B) Cross section of octagonal box, (C) Plan view showing blank of octagonal box (D) The top view which shows the folding form of an octagonal box, (E) The perspective view which shows the opening form of an octagonal box (A) Perspective view showing sealing form of deformed octagonal box, (B) sectional view of deformed octagonal box, (C) plan view showing blank of deformed octagonal box (D) The top view which shows the folding form of a deformation | transformation octagonal box, (E) The perspective view which shows the opening form of a deformation | transformation octagonal box (A) Perspective view showing sealing form of hexagonal box, (B) sectional view of hexagonal box, (C) plan view showing blank of hexagonal box (D) The top view which shows the folding form of a hexagonal box, (E) The perspective view which shows the opening form of a hexagonal box (A) Perspective view showing sealing form of deformed hexagonal box, (B) sectional view of deformed hexagonal box, (C) plan view showing blank of deformed hexagonal box (D) The top view which shows the folding form of a deformation | transformation hexagonal box, (E) The perspective view which shows the opening form of a deformation | transformation hexagonal box (A) Perspective view showing sealing form of deformed square box, (B) sectional view of deformed square box, (C) plan view showing blank of deformed square box (D) The top view which shows the folding form of a deformation | transformation square box, (E) The perspective view which shows the opening form of a deformation | transformation square box Plan view showing the molding operation of the octagonal box in the first molding mode Plan view showing the molding operation of the octagonal box in the first molding mode Top view showing molding operation of deformed octagonal box in first molding mode Top view showing molding operation of deformed octagonal box in first molding mode Top view showing forming operation of deformed hexagonal box in second forming mode Plan view showing the forming operation of the deformed hexagonal box in the third forming mode (A), (B) Top view which shows shaping | molding operation | movement of the deformation | transformation octagonal box by 4th shaping | molding mode. (C) Top view showing the forming operation of the deformed octagonal box in the fourth forming mode.

  Hereinafter, an embodiment of a box making machine of the present invention will be described with reference to the drawings. The box making machine according to each embodiment is used for forming a polygonal cylindrical box.

(Box)
The box that can be shaped by the box making machine 1 according to the embodiment includes, as an example, an octagonal box 2, a modified octagonal box 3, a hexagonal box 4, a deformed hexagonal box 5, a deformation, as shown in FIGS. Includes quadrangular box 6 and the like. Each box is made of, for example, a plate material such as cardboard, cardboard (paperboard), or resin plate. Each box includes a vertically cylindrical barrel P, a plurality of upper flaps U provided on the upper edge of the barrel P, and a plurality of lower flaps L provided on the lower edge of the barrel P. Have

  The form in which the body part P is developed (cleaved) and the upper and lower flaps U and L are arranged on the same plane together with the body part P is defined as a blank form of the box. A form in which the body P formed in a cylindrical shape is folded flat and the upper and lower flaps U and L extend in the same direction as the body P is a folded form of the box. A form in which the body part P is expanded so as to form a space on the inner side from the folded form, and the upper and lower flaps U and L extend in the same direction as the axis of the body part P is referred to as an open form. Further, a form in which the body part P is formed in a predetermined form and the upper and lower flaps U and L are bent so as to be orthogonal so as to close the upper and lower openings of the body part P is referred to as a sealing form.

(Octagonal box)
As shown in FIGS. 11 and 12, the octagonal box 2 includes an octagonal cylindrical body 2P whose axis extends vertically, four upper flaps 2U provided on the upper edge of the body 2P, and a body. And 4 lower flaps 2L provided on the lower edge of 2P. The body portion 2P includes the front panel 2PA, the left front panel 2PB, the left panel 2PC, the left rear panel 2PD, the rear panel 2PE, the right rear panel 2PF, the right panel 2PG, and the right front panel 2PH, which form each side of the octagonal box 2. Have in order. In the sealing form, the front panel 2PA and the rear panel 2PE are arranged parallel to each other with their surfaces facing front and back and a distance from each other. The left panel 2PC and the right panel 2PG are arranged parallel to each other with their surfaces facing left and right and spaced from each other. The left front panel 2PB, the left rear panel 2PD, the right rear panel 2PF, and the right front panel 2PH are arranged so as to chamfer the corners of the rectangular cylinder formed by the front panel 2PA, the left panel 2PC, the rear panel 2PE, and the right panel 2PG. Has been. The left front panel 2PB, the left panel 2PC, and the left rear panel 2PD constitute a left trunk side, and the right rear panel 2PF, the right panel 2PG, and the right front panel 2PH constitute a right trunk side.

  The lower flap 2L includes a front lower flap 2LA provided at the lower edge of the front panel 2PA, a left lower flap 2LB provided at the lower edge of the left panel 2PC, and a rear lower flap 2LC provided at the lower edge of the rear panel 2PE. And a lower right flap 2LD provided at the lower edge of the right panel 2PG. Each lower flap 2L is connected to the body 2P via a fold line, and is bent at a right angle with respect to each panel of the body 2P in a sealed form. The front lower flap 2LA and the rear lower flap 2LC function as inner flaps, the lower left flap 2LB and the lower right flap 2LD function as outer flaps, and in the sealed form, the lower left flap 2LB and the lower right flap 2LD are the lower front flap 2LA and the lower rear flap. Cover flap 2LC from below (outside). In the sealed form, the lower left flap 2LB and the lower right flap 2LD are formed such that the front-rear width of the front end is larger than the base end so that the lower opening of the octagonal body 2P can be closed. Further, the front end edges of the lower left flap 2LB and the lower right flap 2LD are formed so as to extend linearly back and forth in the center of the lower opening of the body portion P in the sealed form, and to come into contact with each other.

  The upper flap 2U includes a front upper flap 2UA, a left upper flap 2UB, a rear upper flap 2UC, and a right upper flap 2UD that are vertically symmetrical with the lower flap 2L. As described above, the octagonal box 2 is formed symmetrically.

  As shown in FIG. 11 (A), in the sealed form, the leading edges of the upper left flap 2UB and the upper right flap 2UD are bonded by an adhesive tape T extending in the front-rear direction. Similarly, the front end edges of the lower left flap 2LB and the lower right flap 2LD are bonded by an adhesive tape T extending in the front-rear direction. The front end of each adhesive tape T is bonded to the front panel 2PA, and the rear end is bonded to the rear panel 2PE. As shown in FIG. 11C, a coupling piece 2B is provided on the rear side edge of the left rear panel 2PD via a fold line. By joining the joining piece 2B to the inner surface of the rear panel 2PE, the body portion 2P is formed in a cylindrical shape. As shown in FIG. 12 (D), in the folded form, it is folded 360 ° at the fold line at the boundary between the front panel 2PA and the left front panel 2PB and the fold line at the boundary between the rear panel 2PE and the right rear panel 2PF. The square box 2 has a flat plate shape. As shown in FIG. 12 (E), the opening form is formed by expanding the body part 2P into a cylindrical shape so as to form a space inside the body part 2P from the folded form. In the opened form, the body 2P has a shape generally similar to the sealed form, but the shape is not fixed. In the unfolded form, adjacent panels may be arranged on a common plane without folding some of the folding lines formed in the body portion 2P and extending vertically.

(Deformed octagonal box)
As shown in FIGS. 13 and 14, the modified octagonal box 3 has a body portion 3 </ b> P, an upper flap 3 </ b> U, and a lower flap 3 </ b> L, like the octagonal box 2. The trunk portion 3P includes a front panel 3PA, a left front panel 3PB, a left panel 3PC, a left rear panel 3PD, a rear panel 3PE, a right rear panel 3PF, a right panel 3PG, and a right front panel 3PH. In the sealed form, the front panel 3PA and the rear panel 3PE are arranged parallel to each other with their surfaces facing front and back and at a distance from each other. On the other hand, the left panel 3PC and the right panel 3PG are arranged so as to incline in the left and right directions toward the front. That is, the left panel 3PC and the right panel 3PG are inclined with respect to the front-rear direction and are arranged non-parallel to each other. The left front panel 3PB, the left rear panel 3PD, the right rear panel 3PF, and the right front panel 3PH are arranged so as to chamfer the corners of the rectangular cylinder formed by the front panel 3PA, the left panel 3PC, the rear panel 3PE, and the right panel 3PG. Has been. As described above, the deformed octagonal box 3 is formed substantially symmetrically.

  Similar to the octagonal box 2, the upper flap 3U and the lower flap 3L of the modified octagonal box 3 are the front upper flap 3UA, the upper left flap 3UB, the rear upper flap 3UC, the upper right flap 3UD, the front lower flap 3LA, the lower left flap 3LB, It has a rear lower flap 3LC and a lower right flap 3LD. The tip edges of the upper left flap 3UB and the upper right flap 3UD are formed so as to extend linearly in the front-rear direction and come into contact with each other in the sealed form. Further, the front end edges of the lower left flap 3LB and the lower right flap 3LD are formed so as to extend linearly back and forth in the center of the lower opening of the body portion 3P in the sealed form, and can come into contact with each other. Specifically, the upper left flap 3UB, the upper right flap 3UD, the lower left flap 3LB, and the lower right flap 3LD are formed so that the protruding length from the trunk portion P increases toward the rear side.

  As shown in FIG. 13A, in the sealed form, the leading edges of the upper left flap 3UB and the upper right flap 3UD are bonded by an adhesive tape T extending in the front-rear direction. Similarly, the front end edges of the lower left flap 3LB and the lower right flap 3LD are bonded by an adhesive tape T extending in the front-rear direction. The front end of each adhesive tape T is bonded to the front panel 3PA, and the rear end is bonded to the rear panel 3PE. As shown in FIG. 13C, a coupling piece 3B is provided on the rear side edge of the left rear panel 3PD via a folding line. The coupling portion 3B is coupled to the inner surface of the rear panel 3PE, so that the body portion 3P is formed in a cylindrical shape. As shown in FIG. 14 (D), in the folded form, the fold line at the boundary between the front panel 3PA and the left front panel 3PB and the fold line BL formed on the rear panel 3PE are folded 360 ° to form a deformed octagonal box 3 Is a flat plate. As shown in FIG. 14 (E), the opening form is formed by expanding the body part 3P into a cylindrical shape so as to form a space inside the body part P from the folded form.

(Hexagonal box)
As shown in FIGS. 15 and 16, the hexagonal box 4 includes a hexagonal cylindrical body portion 4 </ b> P whose axis extends vertically, six upper flaps 4 </ b> U provided on the upper edge of the body portion 4 </ b> P, and a body portion. And 6 lower flaps 4L provided on the lower edge of 4P. The body 4P includes a front panel 4PA, a left front panel 4PB, a left rear panel 4PC, a rear panel 4PD, a right rear panel 4PE, and a right front panel 4PF, which form each side of a hexagonal cylinder, in the order described. In the sealing form, the front panel 4PA and the rear panel 4PD are arranged in parallel with a distance from each other with their surfaces facing forward and backward.

  The lower flap 4L includes a lower left flap 4LA provided at the lower edge of the left front panel 4PB, a lower right flap 4LB provided at the lower edge of the right rear panel 4PE, a front panel 4PA, a left rear panel 4PC, a rear panel 4PD, and And a lower inner flap 4LC4LC provided at each lower edge of the right front panel 4PF. Each lower flap 4L is connected to the body portion 4P via a fold line, and is bent at a right angle to each panel of the body portion 4P in a sealed form. The lower left flap 4LA and the lower right flap 4LB function as outer flaps and cover each lower inner flap 4LC from below (outside) in a sealed form. In the sealed form, the lower left flap 4LA and the lower right flap 4LB are formed such that the front-rear width of the distal end portion is larger than the base end portion so that the lower opening of the hexagonal trunk P can be closed. Further, the front end edges of the lower left flap 4LA and the lower right flap 4LB are formed so as to extend forward and backward in the center of the lower opening of the body portion P in the sealed form and to be in contact with each other.

  The upper flap 4U has an upper left flap 4UA, an upper right flap 4UB, and four upper inner flaps 4UC that are vertically symmetrical with the lower flap 4L. As described above, the hexagonal box 4 is formed substantially symmetrically.

  As shown in FIG. 15 (A), in the sealed form, the leading edges of the upper left flap 4UA and the upper right flap 4UB are bonded by an adhesive tape T extending in the front-rear direction. Similarly, the front end edges of the lower left flap 4LA and the lower right flap 4LB are bonded by an adhesive tape T extending in the front-rear direction. The front end of each adhesive tape T is bonded to the front panel 4PA, and the rear end is bonded to the rear panel 4PD. As shown in FIG. 15C, a coupling piece 4B is provided on the rear side edge of the left rear panel 4PC via a folding line. The coupling portion 4B is coupled to the inner surface of the rear panel 4PD, whereby the body portion 4P is formed in a cylindrical shape. As shown in FIG. 16 (D), in the folded form, it is folded 360 ° at the fold line at the boundary between the front panel 4PA and the left front panel 4PB and the fold line at the boundary between the rear panel 4PD and the right rear panel 4PE. The square box is a flat plate. As shown in FIG. 16 (E), the opening form is formed by expanding the body part P into a cylindrical shape so as to form a space inside the body part P from the folded form.

(Deformed hexagonal box)
As shown in FIGS. 17 and 18, the deformed hexagonal box 5 includes a hexagonal cylindrical trunk portion 5 </ b> P whose axis extends vertically, four upper flaps 5 </ b> U provided on the upper edge of the trunk portion 5 </ b> P, It has four lower flaps 5L provided at the lower edge of the portion 5P, and is formed in a bilaterally symmetric shape. The body 5P includes a front panel 5PA, a left front panel 5PB, a left rear panel 5PC, a rear panel 5PD, a right rear panel 5PE, and a right front panel 5PF, which form each side of a hexagonal cylinder, in the order described. In the sealing form, the front panel 5PA and the rear panel 5PD are arranged parallel to each other with their surfaces facing front and back and a distance from each other. The left rear panel 5PC and the right rear panel 5PE are disposed so as to incline in the left and right directions toward the front. That is, the left rear panel 5PC and the right rear panel 5PE are inclined with respect to the front-rear direction and are arranged non-parallel to each other. The left front panel 5PB and the right front panel 5PF are arranged to chamfer the corners of the boundary between the front panel 5PA and the left rear panel 5PC and the corners of the boundary between the front panel 5PA and the right rear panel 5PE. The deformed hexagonal box 5 is formed in a symmetrical shape.

  The lower flap 5L includes a front lower flap 5LA provided at the lower edge of the front flap, a left lower flap 5LB provided at the lower edge of the left rear panel 5PC, and a rear lower flap 5LC provided at the lower edge of the rear panel 5PD. And a lower right flap 5LD provided at the lower edge of the right rear panel 5PE. Each lower flap 5L is connected to the trunk portion 5P via a fold line, and is bent at a right angle to each panel of the trunk portion 5P in a sealed form. The lower left flap 5LB and the lower right flap 5LD function as outer flaps, and cover the lower front flap 5LA and the rear lower flap 5LC that function as inner flaps in the sealed form from below (outside). In the sealed form, the lower left flap 5LB and the lower right flap 5LD are formed such that the front-rear width of the distal end is larger than the base end so that the lower opening of the hexagonal trunk 5P can be closed. Further, the front end edges of the lower left flap 5LB and the lower right flap 5LD are formed so as to extend forward and backward in the center of the lower opening of the body portion 5P in the sealed form, and to come into contact with each other.

  The upper flap 5U has a front upper flap 5UA, a left upper flap 5UB, a rear upper flap 5UC, and a right upper flap 5UD that are vertically symmetrical with the lower flap 5L.

  As shown in FIG. 17A, in the sealed form, the leading edges of the upper left flap 5UB and the upper right flap 5UD are bonded by an adhesive tape T extending in the front-rear direction. Similarly, the front end edges of the lower left flap 5LB and the lower right flap 5LD are bonded by an adhesive tape T extending in the front-rear direction. The front end of each adhesive tape T is bonded to the front panel 5PA, and the rear end is bonded to the rear panel 5PD. As shown in FIG. 17C, a coupling piece 5B is provided on the rear side edge of the left rear panel 5PC via a fold line. By joining the joining piece 5B to the inner surface of the rear panel 5PD, the body portion 5P is formed in a cylindrical shape. As shown in FIG. 18D, in the folded configuration, the deformed hexagonal box is folded 360 ° at the fold line at the boundary between the front panel 5PA and the left front panel 5PB and the fold line BL formed on the rear panel 5PD. It becomes a flat plate shape. As shown in FIG. 18 (E), the opening form is formed by expanding the body part 5P into a cylindrical shape so as to form a space inside the body part 5P from the folded form.

  As a modified example of the modified hexagonal box 5, upper flaps 5U and lower flaps 5L may be provided on the upper and lower edges of the left front panel 5PB and the right front panel 5PF, and six upper flaps 5U and six lower flaps 5L may be provided.

(Deformed square box)
As shown in FIGS. 19 and 20, the deformed rectangular box 6 includes a rectangular cylindrical barrel portion 6 </ b> P whose axis extends vertically, four upper flaps 6 </ b> U provided on the upper edge of the trunk portion 6 </ b> P, And four lower flaps 6L provided at the lower edge of the portion 6P. The trunk portion 6P includes a front panel 6PA, a left panel 6PB, a rear panel 6PC, and a right panel 6PD, which form each side of the quadrangular cylinder, in the order described. In the sealed form, the front panel 6PA and the rear panel 6PC are arranged parallel to each other with their surfaces facing front and back and a distance from each other. The left panel 6PB and the right panel 6PD are disposed so as to incline in the left and right directions toward the front. That is, the left panel 6PB and the right panel 6PD are inclined with respect to the front-rear direction and are arranged non-parallel to each other. The deformed square box 6 is formed in a symmetrical trapezoidal shape.

  The lower flap 6L includes a front lower flap 6LA provided at the lower edge of the front panel 6PA, a left lower flap 6LB provided at the lower edge of the left panel 6PB, and a rear lower flap 6LC provided at the lower edge of the rear panel 6PC. And a lower right flap 6LD provided at the lower edge of the right panel 6PD. Each lower flap 6L is connected to the body portion 6P via a fold line, and is bent at a right angle to each panel of the body portion 6P in a sealed form. The lower left flap 6LB and the lower right flap 6LD function as outer flaps, and cover the lower front flap 6LA and the rear lower flap 6LC functioning as inner flaps in the sealed form from below (outside). In the sealed form, the lower left flap 6LB and the lower right flap 6LD are formed such that the front-rear width of the front end portion is larger than the base end portion so that the lower opening of the trapezoidal trunk portion 6P can be closed. Further, the front end edges of the lower left flap 6LB and the lower right flap 6LD are formed so as to extend forward and rearward in the center of the lower opening of the body portion 6P in the sealed form and to come into contact with each other.

  The upper flap 6U has a front upper flap 6UA, a left upper flap 6UB, a rear upper flap 6UC, and a right upper flap 6UD that are vertically symmetrical with the lower flap 6L.

  As shown in FIG. 19A, in the sealed form, the leading edges of the upper left flap 6UB and the upper right flap 6UD are bonded by an adhesive tape T extending in the front-rear direction. Similarly, the front end edges of the lower left flap 6LB and the lower right flap 6LD are bonded by an adhesive tape T extending in the front-rear direction. The front end of each adhesive tape T is bonded to the front panel 6PA, and the rear end is bonded to the rear panel 6PC. As shown in FIG. 19C, a coupling piece 6B is provided on the rear side edge of the rear panel 6PC via a fold line. The coupling portion 6B is coupled to the inner surface of the rear panel 6PC, so that the body portion 6P is formed in a cylindrical shape. As shown in FIG. 20 (D), in the folded form, the folded quadrilateral box is folded 360 ° at the fold line at the boundary between the front panel 6PA and the left panel 6PB and the fold line BL formed on the rear panel 6PC. It becomes a flat plate shape. As shown in FIG. 20 (E), the opening form is formed by expanding the body part 6P into a cylindrical shape so as to form a space inside the body part 6P from the folded form.

(Box making machine)
As shown in FIG. 1, the box making machine 1 according to the embodiment includes a molding unit 10 that molds an open box and a taping unit 11 that seals the molded box. The forming part 10 and the taping part 11 are arranged along a center line C extending in the front-rear direction of the box making machine 1, and the taping part 11 is arranged in front of the forming part 10.

  The molding unit 10 includes a base 13, a rear stopper 14, a front stopper 15, a body pressing device 16, and a flap bending device 17 (side flapper). The base 13, the front stopper 15, the rear stopper 14, the body pressing device 16, and the flap bending device 17 are supported by a frame (not shown) of the box making machine 1.

(Base)
As shown in FIG. 2, the base 13 has an upper plate 13 </ b> A that extends back and forth on the center line C. 13 A of upper plates are arrange | positioned so that a surface may face up and down. A lower wall 13B that protrudes downward is provided at the center of the lower surface of the upper plate 13A in the left-right direction. The lower wall 13B has a surface facing left and right, and extends back and forth along the upper plate 13A. The cross section of the base 13 is formed in a T shape by the upper plate 13A and the lower wall 13B.

  A pair of left and right free rollers 21 that rotate about an axis extending in the left-right direction are provided on the left and right sides of the front end portion of the lower wall 13B. The left and right free rollers 21 have their left and right inner portions opposed to the lower surface of the upper plate 13A via a gap. The left and right free rollers 21 are provided on the lower wall 13B so that the vertical position can be adjusted, and the size of the gap between the free rollers 21 and the lower surface of the upper plate 13A can be adjusted. Such a free roller 21 is preferably supported by a support shaft bent in a crank shape, for example.

(Rear stopper)
As shown in FIG. 2, the rear stopper 14 includes a slide block 23 supported on the upper plate 13 </ b> A so as to be displaceable in the front-rear direction. The slide block 23 is locked to the left and right side edges of the upper plate 13A so as not to fall off the upper plate 13A. The front surface of the slide block 23 is formed as a flat surface facing forward.

  A rear support arm 24 protruding leftward and rightward is coupled to the slide block 23. The rear support arm 24 may be a continuous member penetrating the slide block 23 left and right, or may be a pair of left and right members extending left and right from the slide block 23. The rear support arm 24 is formed in a prismatic shape extending linearly from side to side. A pair of left and right rear corner contact portions 25 and a pair of left and right spacers 26 are supported by the rear support arm 24 so as to be displaceable in the left and right directions, with the slide block 23 as the center. The spacer 26 is disposed between the slide block 23 and the rear corner contact portion 25. The rear corner abutting portion 25 and the spacer 26 are provided with fixing means for fixing the rear corner abutting portion 25 and the spacer 26 to arbitrary left and right positions of the rear support arm 24. The fixing means may be a set screw, for example.

  As shown in FIG. 3, each rear corner abutting portion 25 is connected to a rear base portion 25A in which a hole through which the rear support arm 24 is inserted and a front surface of the rear base portion 25A, and has a front surface facing forward. The rear plate 25B is provided, and the rear plate 25B is disposed on the left and right outer sides of the rear plate 25B, and is arranged with respect to the rear plate 25B so as to be rotatable about a rotating shaft extending vertically. In the present embodiment, the rear surface of the rear plate 25C is coupled to the rear surface of the rear plate 25B by a hinge 25D having a rotating shaft extending vertically.

  The rear base portion 25A supports an adjustment plate 25E that can be displaced in the horizontal direction and can be fixed at an arbitrary position. Specifically, the adjustment plate 25E has a long hole that penetrates vertically and extends in the horizontal direction, and is fastened to the rear base 25A by a bolt that passes through the long hole and is screwed to the rear base 25A. ing. The adjustment plate 25E and the rear plate 25C are connected to each other via the first actuator 30. The first actuator 30 may be, for example, an air cylinder or an electric cylinder. By driving the first actuator 30, the rear side plate 25C is between the initial position where the angle formed with the front surface of the rear plate 25B is large and the post drive position where the angle formed with the front surface of the rear plate 25B is smaller than the initial position. Thus, it rotates with respect to the rear plate 25B. The initial position and the post-drive position of the side plate can be adjusted by changing the position of the adjustment plate 25E with respect to the rear base portion 25A. The angle of the rear side plate 25C with respect to the rear plate 25B is adjusted according to the angles of the corners formed at the left and right ends of the rear panel of the box to be molded. The rear side plate 25 </ b> C can press the body portion P of the box to the left and right inward in the process of moving to the post-drive position by the operation of the first actuator 30. Therefore, the rear stopper 14 including the rear plate 25C can function as a body pressing device.

  As shown in FIG. 2, each spacer 26 is detachably supported by the rear support arm 24 and protrudes downward from the rear support arm 24. By preparing a plurality of spacers 26 having different sizes and causing the rear support arm 24 to support a spacer 26 selected from these spacers, the distance from the rear support arm 24 to the lower end of the spacer 26 can be changed.

  A fixed block 32 is fixed to the rear end portion of the upper surface of the upper plate 13A so that the position can be adjusted in the front-rear direction. The fixed block 32 has a long hole that penetrates vertically and extends forward and backward, and is fastened to the upper plate 13A by a bolt that passes through the long hole and is screwed to the upper plate 13A. The slide block 23 is coupled to the fixed block 32 via a second actuator 33 and a third actuator 34 connected in series. The second and third actuators 33 and 34 are the same as the first actuator 30 and have a fixed end and a drive end displaced with respect to the fixed end. The second actuator 33 has a fixed end coupled to the fixed block 32 and a drive end coupled to the fixed end of the third actuator 34. The driving end of the third actuator 34 is coupled to the slide block 23.

  The initial position of the rear stopper 14 (slide block 23) can be adjusted by changing the front-rear position of the fixed block 32 with respect to the upper plate 13A. The slide block 23 advances a distance L1 by driving the second actuator 33, and advances a distance L2 larger than the distance L1 by driving the third actuator 34. As will be described later, the second actuator 33 is used for the purpose of advancing the rear stopper 14 by a relatively small distance at the time of molding, and the third actuator 34 greatly advances the rear stopper 14 after the molding to form the box 13 on the base 13. It is used for the purpose of sending it forward. The rear stopper 14 is in the initial position when both the second and third actuators 33 and 34 are not driven, is in the intermediate position when only the second actuator 33 is driven, and is used for driving the second actuator 33. Regardless, assume that the third actuator 34 is in the delivery position when it is driven. The delivery position has a width corresponding to the drive amount (distance L1) of the second actuator 33.

(Front stopper)
As shown in FIG. 2, the front stopper 15 is disposed at a distance in front of the rear stopper 14. The front stopper 15 has a front block 38 supported by the frame via the fourth actuator 37. The front block 38 can be displaced between an initial position located directly below the base 13 and a retracted position moved downward from the upper position by driving the fourth actuator 37. The fourth actuator 37 is the same as the first actuator 30.

  A front support arm 39 protruding leftward and rightward is coupled to the front block 38. The front support arm 39 may be a continuous member that penetrates the slide block 23 from side to side, or may be a pair of left and right members that extend from the slide block 23 to the left and right. The front support arm 39 is formed in a prismatic shape that extends linearly from side to side. A pair of left and right front corner abutting portions are supported by the front support arm 39 so as to be displaceable in the left-right direction with the front block 38 as the center. The front corner abutting portion 40 is provided with fixing means for fixing the front corner abutting portions 40 to arbitrary left and right positions of the front support arm 39. The fixing means may be a set screw, for example.

  As shown in FIG. 4, each front corner contact portion 40 includes a front base portion 40A having a hole through which the front support arm 39 is inserted, and a front plate having a rear surface that is coupled to the rear surface of the block and faces rearward. 40B, and a front side plate 40C disposed on the left and right outer sides of the front plate 40B, with respect to the front plate 40B so as to be rotatable about a rotation axis extending vertically. In the present embodiment, the front surface of the front plate 40C is coupled to the front surface of the front plate 40B by a hinge 40D having a rotating shaft extending vertically.

  An adjustment plate 40E is supported on the front base portion 40A so that it can be displaced in the horizontal direction and can be fixed at an arbitrary position. Specifically, the adjustment plate 40E has a long hole that penetrates vertically and extends in the horizontal direction, and is fastened to the front base 40A by a bolt that passes through the long hole and is screwed to the front base 40A. . The adjustment plate 40E is coupled to the front surface of the front side plate 40C. The angle of the front plate 40C with respect to the front plate 40B is adjusted according to the angle of the corners formed at the left and right ends of the front panel of the box to be molded.

  2, by driving the fourth actuator 37, the front stopper 15 causes each front corner contact portion 40 to protrude upward from the upper surface of the upper plate 13A and each front corner contact portion 40. Is displaced between the retracted position lowered below the upper plate 13A.

(Torso pressing device)
As shown in FIG. 5, the body pressing device 16 has a pair of left and right body pressing members 43 disposed on both the left and right sides of the base 13. Each trunk portion pressing member 43 includes a rod-shaped member 43A extending in the front-rear direction and a pair of front and rear arms 43B protruding from the front end and the rear end of the rod-shaped member 43A in a direction orthogonal to the rod-shaped member 43A. The pair of front and rear arms 43 </ b> B are supported by the frame so that the front and rear arms 43 </ b> B can rotate around a common rotation axis extending in the front-rear direction. The rotation shafts of the left and right body pressing members 43 are arranged at a distance from each other on the left and right. Thereby, each rod-like member 43A can turn around the rotation axis of each arm 43B, and the initial position located on the left and right sides above the base 13 and on the left and right sides, and on the left and right sides relative to the initial position. It is displaced to the left and right with respect to the post-drive position located in the direction.

  The left and right trunk pressing members 43 are connected to each other by a power transmission device 43C and perform a bilaterally symmetric operation around the center line C. The power transmission device 43C is configured by, for example, a pair of left and right pulleys (sprockets) coupled to the rotation shafts of the left and right arms 43B, and an endless belt (roller chain) that is stretched around each pulley in an 8-shape. It is good to be. The left and right arms 43B are connected to each other by a fifth actuator 44 that expands and contracts. The fifth actuator 44 may have the same configuration as the first actuator 30 described above. By driving the fifth actuator 44, the left and right trunk pressing members 43 are displaced between an initial position and a post-drive position that has moved inward in the left and right directions from the initial position.

  A pressing block 43D is detachably supported by each rod-like member 43A. The pressing block 43D includes an inclined surface that protrudes inward in the left-right direction from the rod-shaped member 43A and is inclined with respect to the front-rear direction. The number and shape of the pressing blocks 43D supported by the rod-shaped member 43A can be arbitrarily changed according to the shape of the box to be formed. For example, a pair of front and rear pressing blocks 43D may be provided on one bar-like member 43A, separated from each other. The shape of the pressing block 43D may be, for example, a conical shape centered on the rod-shaped member 43A.

(Flap folding device)
As shown in FIG. 6, the flap bending device 17 has a pair of left and right flap bending members 47 disposed on the left and right sides of the base 13. Each flap bending member 47 includes a shaft 47A that extends forward and backward and is rotatably supported by the frame, and a pressing portion 47B and an arm 47C that extend in a direction orthogonal to the shaft 47A. The pressing portion 47B is formed by a substantially rectangular plate-like member, and one of the long sides is coupled to the shaft 47A and extends in the front-rear direction. Each arm 47C is coupled to the frame via a corresponding one of a pair of left and right sixth actuators 48. The sixth actuator 48 may have the same configuration as the first actuator 30 described above.

  As shown in FIGS. 8A and 8B, by driving the sixth actuator 48, the left and right flap bent members 47 have an initial position in which the pressing portion 47B extends obliquely inward in the left and right directions downward. The pressing portion 47B is displaced between the post-drive position extending substantially horizontally in the left and right inward directions. The post-drive position of the flap bending member 47 is determined by the pressing portion 47 </ b> B coming into contact with the lower end of the spacer 26 of the rear stopper 14. The tip of the pressing portion 47B is disposed on the left and right sides of the lower wall 13B in the post-drive position, and faces the lower surface of the upper plate 13A via a gap. By exchanging the spacer 26 in accordance with the thickness of the lower flap L of the box to be molded, the size of the gap between the pressing portion 47B and the upper plate 13A at the post-drive position is arbitrarily adjusted. The pair of left and right flap bending members 47 are symmetric with respect to the center line C, and perform a symmetric operation.

  A locking portion 49 is provided at the tip edge of each pressing portion 47B. The locking part 49 is formed in a shape capable of locking the leading edges of the lower flaps L on the left and right sides of the box. The locking portion 49 has a claw portion 49A (wall portion) that protrudes in a direction substantially orthogonal to the pressing portion 47B formed in a plate shape. The claw portion 49A extends back and forth along the tip edge of the pressing portion 47B. The locking portion 49 is formed in a substantially L shape by the tip portion of the pressing portion 47B and the claw portion 49A. Further, the distal end side portion of the pressing portion 47B is slightly bent to the side opposite to the protruding direction of the claw portion 49A with respect to the other portion (base end side portion) to form an inclined portion 47D. Due to the inclined portion 47D, the protruding amount of the claw portion 49A with respect to the proximal end portion of the pressing portion 47B is smaller than the protruding amount of the claw portion 49A with respect to the distal end portion.

  The engaging portion 49 may be formed integrally with the pressing portion 47B as shown in FIG. 7 (A), and as shown in FIG. 7 (B), another member 51 having an L-shaped cross section is connected to the tip of the pressing portion 47B. It may be formed by being coupled to the part with a screw 52 or the like.

  Various shapes can be applied to the locking portion 49. For example, as shown in FIG. 7C, the claw portion 49A has a base end portion 49D that protrudes in a direction substantially orthogonal to the pressing portion 47B, and a base end portion 49D that is substantially orthogonal to the base end portion 49D. Moreover, you may have the front-end | tip part 49E which opposes the press part 47B via a clearance gap. That is, the locking portion 49 may be formed in a substantially U shape by the tip portion of the pressing portion 47B and the claw portion 49A.

(Taping part)
As shown in FIG. 9, the taping unit 11 includes a transport device 60, a lower correction device 61, an upper correction device 73, a lower taping unit 62, and an upper taping unit 63.

(Transport device)
The conveyance device 60 is provided on both sides of the center line C, and is provided with a pair of left and right lower conveyors 60A extending in the front-rear direction, a pair of left and right side conveyors 60B extending in the front-rear direction. It has a pair of left and right upper conveyors 60C provided above the conveyor 60A and extending forward and backward. The lower conveyor 60A, the side conveyor 60B, and the upper conveyor 60C are well-known belt conveyors, and are driven by a motor to convey the box forward. The left and right lower conveyors 60A are supported by a frame, face upward, and have a placement surface disposed at the same height as the upper surface of the upper plate 13A. The front end portion of the base 13 is disposed between the rear end portions of the left and right lower conveyors 60A.

  In the left and right side conveyors 60B, the rotation shaft extends vertically, and the contact surface with the box faces the left and right inward (center line C side). The left and right side conveyors 60B are supported by the frame so as to be displaceable in the left-right direction, and the distance between the contact surfaces can be changed. Thereby, the left and right side conveyors 60B can be retreated to the left and right when not in use.

  The frame is provided with a movable frame 65 that can be displaced vertically. A mount member 67 is supported on a support shaft 66 extending left and right of the movable frame 65 so as to be displaceable in the left-right direction. The position of the movable frame 65 with respect to the frame and the position of the mount member 67 with respect to the movable frame 65 can be adjusted by power such as a motor or manual operation. The pair of left and right upper conveyors 60 </ b> C are supported by the mount member 67. Each upper conveyor 60C has a rotating shaft extending left and right, and a contact surface with the box facing downward. By the operation of the movable frame 65 and the mount member 67, the pair of upper conveyors 60 </ b> C moves between the use position where the upper conveyor 60 </ b> C can contact the upper surface of the box and the disengagement position away from the box with the center line C as the center. be able to.

(Correcting device)
As shown in FIG. 10, the lower correction device 61 is arranged in the rear part between the left and right lower conveyors 60 </ b> A and in front of the base 13. The lower correction device 61 includes a base 61A supported by a frame, a pair of left and right arms 61B supported to be rotatable with respect to the base 61A, and a shaft 61C extending between the left and right arms 61B and extending left and right. And a free roller 61D rotatably supported by the shaft 61C, and an urging member 61E having one end coupled to the base 61A and the other end coupled to the arm 61B. The arm 61B is a retraction position in which the free roller 61D protrudes upward from the placement surface of the lower conveyor 60A and pivots forward from the protrusion position, and the free roller 61D is recessed below the placement surface of the lower conveyor 60A. It can be rotated between positions. The biasing member 61E is a tension coil spring in this embodiment, and biases the arm 61B to the protruding position.

  The upper correction device 73 is supported by the mount member 67 and is disposed between the left and right upper conveyors 60C. The upper correction device 73 has the same configuration as the lower correction device 61 and is arranged so as to be vertically symmetrical with the lower correction device 61. In the upper straightening device 73, the arm 61B is rotated forward from the protruding position where the free roller 61D protrudes below the contact surface (lower surface) of the upper conveyor 60C, and the free roller 61D contacts the upper conveyor 60C. It is possible to rotate between a retracted position immersed above the surface.

  The free roller 61D of the upper straightening device 73 of the lower straightening device 61 is in the protruding position in the initial state, and is a front panel (for example, the octagonal box 2 of the octagonal box 2) disposed on the front side of the box that is conveyed forward by the conveyance device 60. Abutting on the front panel 2PA), the front panel extends in a direction (left and right) parallel to each free roller 61D to correct the shape of the box. When the box moves forward by the transport device 60, the free roller 61D of the upper correction device 73 of the lower correction device 61 is pushed by the front panel and moves to the retracted position against the urging force of the urging member 61E. As a result, the box whose shape has been corrected moves forward through the lower correction device 61 and the upper correction device 73. After the box passes, the free roller 61D of the upper correction device 73 of the lower correction device 61 returns to the protruding position by the urging force of the urging member 61E. The length in the left-right direction of the free roller 61D is determined from the length in the left-right direction of the front panel (for example, the front panel 2PA of the octagonal box 2) that is disposed on the front side of the body portion P of the box and faces the front. Longer is preferred. In this case, the free rollers 61D are arranged on the left and right sides of the front panel (for example, in the case of the octagonal box 2, the corner of the boundary between the front panel 2PA and the left front panel 2PB, and the front panel 2PA and the right front panel). 2), the shape of the panels arranged on the left and right of the front panel can be accurately corrected.

(Lower taping unit)
As shown in FIG. 9, the lower taping unit 62 is disposed in front of the lower correction device 61 between the left and right lower conveyors 60A. The lower taping unit 62 is an apparatus that affixes an adhesive tape along the center line C to the lower part of the front side, the bottom, and the lower part of the rear side of the box that passes from the rear to the front. A known apparatus can be applied to the lower taping unit 62. For example, a tape roll that supplies an adhesive tape, a tape application roller that holds the adhesive tape drawn from the tape roll and presses it against the box, and an adhesive A cutter unit that cuts the tape at a predetermined timing and a pressing roller that presses the end of the cut adhesive tape against the rear side of the box. The tape application roller is biased so as to protrude upward from the placement surface of the lower conveyor 60A in the initial state, and is pushed away by contacting the box moving forward, and again when the box passes. It protrudes upward from the mounting surface and is in an initial state. A cutter unit has a contact part with the box which passes, and when a box passes a predetermined position, it cuts an adhesive tape with a cutter. The pressing roller is connected to the tape application roller via a link mechanism, and operates in conjunction with the operation of the tape application roller. For example, when the tape applying roller pushed down by the box returns to the initial position, the pressing roller may press the end of the cut adhesive tape toward the rear side of the box.

(Upper taping unit)
The upper taping unit 63 is supported by the mount member 67 so as to be positioned in front of the upper correction device 73 between the left and right upper conveyors 60C. The upper taping unit 63 is an apparatus that affixes an adhesive tape along the center line C to the upper part of the front side, the upper side, and the upper part of the rear side of the box that passes through the lower part from the rear to the front. The upper taping unit 63 may have a vertically symmetrical configuration with the lower taping unit 62 described above. The upper taping unit 63 can move between the use position and the retracted position together with the upper conveyor 60C.

(Control device and operation switch)
A selector switch, a molding start switch, a delivery switch, and an emergency stop switch, which are operated by an operator, are provided at appropriate positions of the box making machine 1. The select switch is a switch for selecting a molding mode (molding method) of the box. The molding start switch is a switch that is operated when molding of the box is started. The delivery switch is a switch that is operated when the box is sent from the molding unit 10 to the taping unit 11. The emergency stop switch is a switch operated when it is desired to stop the box making machine 1.

  A box sensor 70 for detecting the presence of the box at the front end of the base 13 is provided at an appropriate position of the frame. As the box sensor 70, various known sensors can be applied. For example, the box sensor 70 may be an infrared sensor that detects the box in a non-contact manner.

  Signals output from the select switch, molding start switch, delivery switch, emergency stop switch, and box sensor 70 are input to the control device, and the control device, based on these signals, outputs the first to sixth actuators 30, 33, 34. , 37, 44, and 48 are controlled.

(Operation of box making machine)
The box making machine 1 according to the embodiment forms a box in an open form in one of the first to fourth forming modes. In the first molding mode, the shape of the front stopper 15, the shape of the rear stopper 14, and the initial position (front-rear position) are set in advance according to the shape of the sealed box, and the front stopper 15 and the rear side The box disposed between the stoppers 14 is pressed from the left and right by the left and right body pressing members 43 and formed into a predetermined shape. Here, the shape of the front stopper 15 is determined by the left and right position of the front block 38 and the angle of the front plate 40C with respect to the front plate 40B, and the shape of the rear stopper 14 is the left and right position of the rear block and the rear plate with respect to the rear plate 25B. The front / rear position of the rear stopper 14 is determined by the front / rear position of the fixed block 32.

  When the first molding mode is selected with the select switch, when the molding start switch is pressed, the fifth actuator 44 is driven to move the left and right body pressing members 43 from the initial position to the post-drive position, and 6 The actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position. Thereafter, when the delivery switch is pressed, the fifth actuator 44 is controlled to move the left and right body pressing members 43 from the post-drive position to the initial position, and the fourth actuator 37 is controlled to set the front stopper 15 to the initial position. To the post-drive position (retracted position), the third actuator 34 is controlled, and the rear stopper 14 moves from the initial position to the delivery position. Thereafter, when it is confirmed that the box has moved to the front end of the base 13 based on the signal from the box sensor 70, the sixth actuator 48 is controlled so that the flap bending member 47 is moved from the post-drive position to the initial position. And the third actuator 34 is controlled to move the rear stopper 14 from the delivery position to the initial position, and the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position. The part 10 returns to the initial state.

  In the second molding mode, the shape of the front stopper 15, the initial shape of the rear stopper 14, the post-drive shape and the initial position (front / rear position) are set in advance in accordance with the shape of the sealed box. The box disposed between the stopper 15 and the rear stopper 14 is pressed from the left and right by the rear stopper 14 that changes from the initial shape to the post-drive shape, and is molded into a predetermined shape. Here, the initial shape of the rear stopper 14 is determined by the left and right positions of the rear block and the angle of the rear plate 25C with respect to the rear plate 25B when the first actuator 30 is not driven (the initial position of the rear plate 25C). The post-drive shape of the rear stopper 14 is determined by the left-right position of the rear block and the angle of the rear plate 25C with respect to the rear plate 25B when the first actuator 30 is driven (post-drive position of the rear plate 25C). When the drive amount of the first actuator 30 is constant, the post-drive shape of the rear stopper 14 is determined according to the initial shape.

  When the second molding mode is selected with the select switch, when the molding start switch is pressed, the first actuator 30 is driven to move the left and right rear plates 25C from the initial position to the post-drive position, and the sixth actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position. Thereafter, when the delivery switch is pressed, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), and the first actuator 30 is driven to move the left and right rear plates 25C. The third actuator 34 is controlled from the post drive position to the initial position, and the rear stopper 14 moves from the initial position to the delivery position. Thereafter, when it is confirmed that the box has moved to the front end of the base 13 based on the signal from the box sensor 70, the third actuator 34 is controlled to move the rear stopper 14 from the delivery position to the initial position. Then, the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position, and the molding unit 10 returns to the initial state.

  In the third molding mode, the shape of the front stopper 15, the initial shape of the rear stopper 14, the post-drive shape, and the front / rear position are set in advance in accordance with the shape of the sealed box. The box disposed between the side stoppers 14 is pressed from the left and right by the rear stopper 14 that changes from the initial shape to the post-drive shape and the left and right body pressing members 43, and is molded into a predetermined shape.

  When the third molding mode is selected with the select switch, when the molding start switch is pressed, the first actuator 30 is driven to move the left and right rear plates 25C from the initial position to the post-drive position, and the fifth actuator 44 is driven, the left and right body pressing members 43 move from the initial position to the post-drive position, and the sixth actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position. Thereafter, when the delivery switch is pressed, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), and the first actuator 30 is driven to move the left and right rear plates 25C. The fifth actuator 44 is controlled from the post-drive position to the initial position, the left and right body pressing members 43 are moved from the post-drive position to the initial position, and the third actuator 34 is controlled to set the rear stopper 14 to the initial position. Move from position to delivery position. Thereafter, when it is confirmed that the box has moved to the front end of the base 13 based on the signal from the box sensor 70, the third actuator 34 is controlled to move the rear stopper 14 from the delivery position to the initial position. Then, the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position, and the molding unit 10 returns to the initial state.

  In the fourth molding mode, the shape of the front stopper 15 and the shape of the rear stopper 14 are set in advance in accordance with the shape of the sealed box. Further, the distance between the rear stopper 14 and the front stopper 15 at the initial position is longer than the longitudinal length of the sealed box, and the distance between the rear stopper 14 and the front stopper 15 at the intermediate position. However, the initial position (front / rear position) of the rear stopper 14 is set in advance so as to be equal to the front / rear length of the sealed box. In the fourth molding mode, the box disposed between the front stopper 15 and the rear stopper 14 in the initial position is pulled in the left-right direction by the left and right flap bending members 47 via the lower flap L, and It is pressed back and forth by the rear stopper 14 that advances from the initial position to the post-drive position, and is molded into a predetermined shape.

  When the fourth molding mode is selected with the select switch, when the molding start switch is pressed, the sixth actuator 48 is controlled so that the flap bending member 47 moves from the initial position to the post-drive position, and the second actuator 33 is controlled, and the rear stopper 14 moves from the initial position to the intermediate position. Thereafter, when the delivery switch is pressed, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), and the third actuator 34 is controlled to set the rear stopper 14 in the middle. Move from position to delivery position. Thereafter, when it is confirmed that the box has moved to the front end of the base 13 based on the signal from the box sensor 70, the third actuator 34 and the second actuator 33 are controlled, and the rear stopper 14 is moved to the sending position. To the initial position, the fourth actuator 37 is controlled, the front stopper 15 moves from the post-drive position to the initial position, and the molding unit 10 returns to the initial state.

  Next, a specific example of a molding procedure using each molding mode will be described in detail.

(Specific example of the first molding mode)
As shown in FIG. 21, the procedure for molding the octagonal box 2 in the first molding mode will be described. As preparation, the left and right positions of the left and right front base portions 40A (front plate 40B) of the front stopper 15 and the angle of the front plate 40C with respect to the front plate 40B are the left and right widths of the front panel 2PA of the octagonal box 2, and the front panel 2PA and the left front It is set in advance based on the angle formed by the panel 2PB and the angle formed by the front panel 2PA and the right front panel 2PH. That is, the shape of the front stopper 15 is set to be complementary to the shape of the front side portion of the octagonal box 2. Further, the left and right positions of the left and right rear base portions 25A (rear plate 25B) of the rear stopper 14 and the angle of the rear plate 25C with respect to the rear plate 25B are the left and right widths of the rear panel 2PE of the octagonal box 2 and the left side of the rear panel 2PE. It is set in advance based on the angle formed by the rear panel 2PD and the angle formed by the rear panel 2PE and the right rear panel 2PF. That is, the initial shape of the rear stopper 14 is set to a shape complementary to the shape of the rear side portion of the octagonal box 2. The first actuator 30 is maintained in a non-driven state. Further, the distance between the front plate 40B of the front stopper 15 and the rear plate 25B of the rear stopper 14 is equal to the longitudinal length of the octagonal box 2 (the distance between the outer surfaces of the front panel 2PA and the rear panel 2PE). The initial position (front / rear position) of the rear stopper 14 is set in advance.

  In addition, the distance between the rod-shaped members 43A of the left and right body pressing members 43 at the post-drive position is equal to the left and right length of the octagonal box 2 (the distance between the outer surfaces of the left panel 2PC and the right panel 2PG). The post-drive position of the body pressing member 43 is set. The left and right bar-like members 43A are attached with conical pressing blocks 43D that can be brought into surface contact with the left front panel 2PB, the left rear panel 2PD, the right front panel 2PH, and the right rear panel 2PF, respectively. The select switch is selected in the first molding mode.

  The operator opens the octagonal box 2 in the folded form in the open form, and sets the octagonal box 2 on the base 13 between the front stopper 15 and the rear stopper 14. At this time, the operator presses the front lower flap 2LA against the upper plate 13A of the base 13 while inclining the octagonal box 2, thereby moving the front lower flap 2LA backward substantially perpendicular to the front panel 2A. Similarly, by pressing the rear lower flap 2LC against the upper plate 13A of the base 13, the rear lower flap 2LC is folded forward and substantially perpendicular to the rear panel 2PE. The flap 2LA and the rear lower flap 2LC are placed on the upper surface. Since the longitudinal length of the box placed on the base 13 is located between the front stopper 15 and the rear stopper 14, it is less than the longitudinal length of the octagonal box 2 in the sealed form. That is, the front panel 2A and the rear panel 2PE may be in contact with the front plate 40B and the rear plate 25B, or may be separated from each other.

  When the molding start switch is pressed while the octagonal box 2 is set on the base 13, the fifth actuator 44 is driven, and the left and right body pressing members 43 move from the initial position to the post-drive position. As a result, the left panel 2PC and the right panel 2PG are pushed right and left inward by the rod-shaped member 43A, and the left front panel 2PA, the left rear panel 2PD, the right rear panel 2PF, and the right front panel 2PH are pushed inward by the pressing block 43D. It is. The octagonal box 2 shrinks to the left and right as it is pushed by the body pressing member 43 from the left and right, extends forward and backward, is pressed against the front stopper 15 and the rear stopper 14, and is bent at a predetermined fold line. .

  The sixth actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position, so that the lower left flap 2LB and the lower right flap 2LD are substantially perpendicular to the left panel 2PC and the right panel 2PG. It can be bent. At this time, since the shape of the body part P of the octagonal box 2 is formed in the same manner as the sealing form, the leading edges of the lower left flap 2LB and the lower right flap 2LD face each other across the lower wall 13B, and the center line C It is arranged along. In this way, the octagonal box 2 is formed.

  The operator accommodates the article in the molded octagonal box 2 and manually folds the front upper flap 2UA and the rear upper flap 2UC, and then folds the upper left flap 2UB and the upper right flap 2UD. When the article is not accommodated, each upper flap U may not be bent.

  Next, when the delivery switch is pressed, the fifth actuator 44 is controlled so that the left and right body pressing members 43 move from the post-drive position to the initial position and leave the octagonal box 2. At the same time, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), and the octagonal box 2 can be moved forward. Then, the third actuator 34 is controlled to move the rear stopper 14 from the initial position to the delivery position, and the octagonal box 2 slides on the base 13 and is pushed forward. At this time, the lower left flap 2LB and the lower right flap 2LD slide on the left and right flap bending members 47, pass through the gap between the free roller 21 and the upper plate 13A, and maintain the closed form while maintaining the closed shape. It moves on the lower conveyor 60A.

  When the box sensor 70 confirms that the octagonal box 2 is on the front end of the base 13, that is, the rear end of the lower conveyor 60 </ b> A, the sixth actuator 48 is controlled so that the flap bending member 47 is moved to the post-drive position. And the third actuator 34 is controlled to move the rear stopper 14 from the delivery position to the initial position, and the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position. And the shaping | molding part 10 returns to the original state. Thereby, the next octagonal box 2 can be formed.

  The octagonal box 2 moved onto each lower conveyor 60A is conveyed forward. Each side conveyor 60 </ b> B is set at a position corresponding to the left and right length of the octagonal box 2, and each upper conveyor 60 </ b> C is set at a position corresponding to the height of the octagonal box 2. Thereby, when the octagonal box 2 moves on each lower conveyor 60A, the left panel 2PC and the right panel 2PG are in contact with each side conveyor 60B, and the upper left flap 2UB and the upper right flap 2UD are in contact with each upper conveyor 60C. . The lower correction device 61 corrects the shape so that the front panel 2A is parallel to the left-right direction when the free roller 61D extending in the left-right direction hits the front panel 2A.

  When the octagonal box 2 passes over the lower taping unit 62, the adhesive tape is continuously attached to the lower part of the front panel 2A, the butted part of the lower left flap 2LB and the lower right flap 2LD, and the lower part of the rear panel 2PE in the front-rear direction. Is done. Similarly, when the octagonal box 2 passes below the upper taping unit 63, the adhesive tape continues in the front-rear direction at the upper part of the front panel 2A, the butted part of the upper left flap 2UB and the upper right flap 2UD, and the upper part of the rear panel 2PE. Affixed. As described above, the octagonal box 2 is sealed, and the octagonal box 2 is maintained in a sealed form. The sealed octagonal box 2 is sent forward from the lower conveyor 60A. When the octagonal box 2 is not sealed, the upper conveyor 60C and the upper taping unit 63 may be retracted to the retracted position.

  In the first molding mode, the shape of the left and right trunk pressing members 43 may be changed according to the shape of the box to be molded. For example, when the left panel 2PC and the right panel 2PG both extend in the front-rear direction (that is, parallel) as in the octagonal box 2 described above, the pressing block 43D is omitted as shown in FIG. Then, the left panel 2PC and the right panel 2PG may be pressed only by the rod-shaped member 43A. Further, when the left panel 2PC and the right panel 2PG are inclined with respect to the front-rear direction (that is, when they are not parallel) as in the modified octagonal box 3, as shown in FIG. The left front panel 2PB, the left rear panel 2PD, the right rear panel 2PF, and the right front panel 2PH may be pressed only by the pressing block 43D. Also in the case of the modified octagonal box 3, as shown in FIG. 24, the pressing block 43D may be omitted, and the deformed octagonal box 3 may be pressed from the left and right only by the rod-shaped member 43A. In this case, the rod-shaped member 43A presses the corners of the left panel 2PC and the left front panel 2PB that are located at the outermost left and right sides in the deformed octagonal box 3 and the corners of the right panel 2PG and the right front panel 2PH. It will be.

  The first molding mode is suitable for a box whose corners formed at the left and right ends of the rear panel such as the octagonal box 2, the modified octagonal box 3, and the hexagonal box 4 are 90 ° or more and less than 180 °. Yes.

(Specific example of the second molding mode)
With reference to FIG. 25, the procedure for forming the deformed hexagonal box 5 in the second forming mode will be described. As preparation, the left and right positions of the left and right front base portions 40A (front plates 40B) of the front stopper 15, the angle of the front plate 40C with respect to the front plate 40B, the left and right widths of the front panel 5PA of the deformed hexagonal box 5, and the front panel 5PA It is set in advance based on the angle between the left front panel 5PB and the angle between the front panel 5PA and the right front panel 5PF. That is, the shape of the front stopper 15 is set to be complementary to the shape of the front side portion of the deformed hexagonal box 5. The positions of the left and right rear bases 25A (rear plate 25B) of the rear stopper 14 and the angle of the rear plate 25C with respect to the rear plate 25B when the first actuator 30 is driven are determined by the rear panel 5PD of the deformed hexagonal box 5 The width is set in advance based on the left and right width, the angle between the rear panel 5PD and the left rear panel 5PC, and the angle between the rear panel 5PD and the right rear panel 5PE. That is, the post-drive shape of the rear stopper 14 is set to be complementary to the shape of the rear side portion of the deformed hexagonal box 5. The initial shape of the rear stopper 14 is determined from the post-drive shape, and the angle formed between the rear panel 5PD and the right rear panel 5PE is larger than the post-drive shape and is set to an obtuse angle. Further, the distance between the front plate 40B of the front stopper 15 and the rear plate 25B of the rear stopper 14 is made equal to the longitudinal length of the deformed hexagonal box 5 (the distance between the outer surfaces of the front panel 5PA and the rear panel 5PD). The initial position (front-rear position) of the rear stopper 14 is set in advance. The select switch is selected in the second molding mode.

  The operator sets the deformed hexagonal box 5 on the base 13 between the front stopper 15 and the rear stopper 14 as in the first molding mode.

  When the molding start switch is pressed while the deformed hexagonal box 5 is set on the base 13, the first actuator 30 is driven, and the left and right rear plates 25C are rotated with respect to the rear plate 25B. The side plate 25C moves from the initial position to the post-drive position. As a result, the left rear panel 5PC and the right rear panel 5PE are pushed inward by the rear side plate 25C. The deformed hexagonal box 5 shrinks to the left and right by being pushed by the rear plate 25C from the left and right, extends forward and backward, is pressed against the front stopper 15 and the rear stopper 14, and is bent and bent at a predetermined folding line.

  Further, as the sixth actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position, the lower left flap 5LB and the lower right flap 5LD are moved to the left rear panel 5PC as in the first molding mode. And it is bent at a substantially right angle with respect to the right rear panel 5PE. In this way, the deformed hexagonal box 5 is formed.

  The operator performs the accommodation of the article and the bending of the upper flap U as in the first molding mode. In addition, the presence or absence of accommodation of articles can be selected as appropriate.

  Next, when the delivery switch is pressed, the first actuator 30 is controlled so that the left and right rear plates 25C move from the post-drive position to the initial position and leave the deformed hexagonal box 5. Thereby, the corners of the rear panel 5PD and the left rear panel 5PC (right rear panel 5PE) having an acute angle can be detached from the rear stopper 14. At the same time, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), and the deformed hexagonal box 5 can be advanced. Then, the third actuator 34 is controlled to move the rear stopper 14 from the initial position to the delivery position, and the deformed hexagonal box 5 slides on the base 13 and is pushed forward. At this time, similarly to the first molding mode, the lower left flap 5LB and the lower right flap 5LD slide on the left and right flap bent members 47 and pass through the gap between the free roller 21 and the upper plate 13A.

  When the box sensor 70 confirms that the deformed hexagon box 5 is present on the front end of the base 13, that is, the rear end of the lower conveyor 60A, the sixth actuator 48 is controlled and the flap bending member 47 is driven. The third actuator 34 is controlled to move from the position to the initial position, the rear stopper 14 is moved from the delivery position to the initial position, and the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position. It moves and the molding part 10 returns to the original state. Thereby, the next deformed hexagonal box 5 can be formed.

  The operation of the taping unit 11 with respect to the deformed hexagonal box 5 is the same as that in the first molding mode except that the left and right side conveyors 60B are not used. The left and right side conveyors 60 </ b> B are retracted to positions that do not come into contact with the deformed hexagonal box 5.

  The second molding mode is suitable for a box whose corners formed at the left and right ends of the rear panel 5PD such as the deformed hexagonal box 5 and the deformed square box 6 are acute angles.

(Specific example of the third molding mode)
With reference to FIG. 26, the procedure for molding the deformed hexagonal box 5 in the third molding mode will be described. As preparation, the left and right positions of the left and right front base portions 40A (front plates 40B) of the front stopper 15, the angle of the front plate 40C with respect to the front plate 40B, the left and right widths of the front panel 5PA of the deformed hexagonal box 5, and the front panel 5PA It is set in advance based on the angle between the left front panel 5PB and the angle between the front panel 5PA and the right front panel 5PF. That is, the shape of the front stopper 15 is set to be complementary to the shape of the front side portion of the deformed hexagonal box 5. The positions of the left and right rear bases 25A (rear plate 25B) of the rear stopper 14 and the angle of the rear plate 25C with respect to the rear plate 25B when the first actuator 30 is driven are determined by the rear panel 5PD of the deformed hexagonal box 5 The width is set in advance based on the left and right width, the angle between the rear panel 5PD and the left rear panel 5PC, and the angle between the rear panel 5PD and the right rear panel 5PE. That is, the post-drive shape of the rear stopper 14 is set to be complementary to the shape of the rear side portion of the deformed hexagonal box 5. The initial shape of the rear stopper 14 is determined from the post-drive shape, and the angle formed between the rear panel 5PD and the right rear panel 5PE is larger than the post-drive shape and is set to an obtuse angle. Further, the distance between the front plate 40B of the front stopper 15 and the rear plate 25B of the rear stopper 14 is made equal to the longitudinal length of the deformed hexagonal box 5 (the distance between the outer surfaces of the front panel 5PA and the rear panel 5PD). The initial position (front-rear position) of the rear stopper 14 is set in advance.

  The left and right body pressing members 43 support four conical pressing blocks 43D. Each pressing block 43D is in surface contact with the left front panel 5PB, the left rear panel 5PC, the right rear panel 5PE, and the right front panel 5PF of the deformed hexagonal box 5 when the trunk pressing member 43 is in the post-drive position. The panel 5PA, the left rear panel 5PC, the right rear panel 5PE, and the right front panel 5PF are formed in a shape that can be pressed to the same position as the sealing form. The select switch is selected in the third molding mode.

  The operator sets the deformed hexagonal box 5 on the base 13 between the front stopper 15 and the rear stopper 14 as in the first molding mode.

  When the molding start switch is pressed while the deformed hexagonal box 5 is set on the base 13, the first actuator 30 is driven, and the left and right rear plates 25C are rotated with respect to the rear plate 25B. The side plate 25C moves from the initial position to the post-drive position. Further, the fifth actuator 44 is driven, and the left and right body pressing members 43 are moved from the initial position to the post-drive position. As a result, the left front panel 5PB, the left rear panel 5PC, the right rear panel 5PE, and the right front panel 5PF are pushed inward by the pressing block 43D. The deformed hexagonal box 5 is compressed to the left and right by being pushed by the body pressing member 43 and the rear plate 25C from the left and right, and is extended to the front and rear, is pressed against the front stopper 15 and the rear stopper 14, and is It is bent and formed with a wire.

  Further, as the sixth actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position, the lower left flap 5LB and the lower right flap 5LD are moved to the left rear panel 5PC as in the first molding mode. And it is bent at a substantially right angle with respect to the right rear panel 5PE. In this way, the deformed hexagonal box 5 is formed.

  The operator performs the accommodation of the article and the bending of the upper flap U as in the first molding mode. In addition, the presence or absence of accommodation of articles can be selected as appropriate.

  Next, when the delivery switch is pressed, the first actuator 30 is controlled so that the left and right rear plates 25C move from the post-drive position to the initial position and leave the deformed hexagonal box 5. Thereby, the corners of the rear panel 5PD and the left rear panel 5PC (right rear panel 5PE) having an acute angle can be detached from the rear stopper 14. At the same time, the fifth actuator 44 is controlled so that the left and right body pressing members 43 move from the post-drive position to the initial position and leave the deformed hexagonal box 5. Further, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), so that the deformed hexagonal box 5 can be advanced. Then, the third actuator 34 is controlled to move the rear stopper 14 from the initial position to the delivery position, and the deformed hexagonal box 5 slides on the base 13 and is pushed forward. At this time, similarly to the first molding mode, the lower left flap 5LB and the lower right flap 5LD slide on the left and right flap bent members 47 and pass through the gap between the free roller 21 and the upper plate 13A.

  When the box sensor 70 confirms that the deformed hexagon box 5 is present on the front end of the base 13, that is, the rear end of the lower conveyor 60A, the sixth actuator 48 is controlled and the flap bending member 47 is driven. The third actuator 34 is controlled to move from the position to the initial position, the rear stopper 14 is moved from the delivery position to the initial position, and the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position. It moves and the molding part 10 returns to the original state. Thereby, the next deformed hexagonal box 5 can be formed.

  The operation of the taping portion 11 with respect to the deformed hexagonal box 5 is the same as in the second molding mode.

  The third molding mode is suitable for a box whose corners formed at the left and right ends of the rear panel 5PD such as the deformed hexagonal box 5 and the deformed square box 6 have acute angles. The third molding mode is a combination of the first molding mode and the second molding mode, and the box is pressed from the left and right directions by the body pressing member 43 and the rear plate 25C. There are many places, and the box can be formed with high accuracy.

(Specific example of the fourth molding mode)
With reference to FIG.27 and FIG.28, the procedure which shape | molds the octagonal box 2 by a 4th shaping | molding mode is demonstrated. As preparation, the left and right positions of the left and right front base portions 40A (front plate 40B) of the front stopper 15 and the angle of the front plate 40C with respect to the front plate 40B are the left and right widths of the front panel 2PA of the octagonal box 2, and the front panel 2PA and the left front It is set in advance based on the angle formed by the panel 2PB and the angle formed by the front panel 2PA and the right front panel 2PH. That is, the shape of the front stopper 15 is set to be complementary to the shape of the front side portion of the octagonal box 2. Further, the left and right positions of the left and right rear base portions 25A (rear plate 25B) of the rear stopper 14 and the angle of the rear plate 25C with respect to the rear plate 25B are the left and right widths of the rear panel 2PE of the octagonal box 2 and the left side of the rear panel 2PE. It is set in advance based on the angle formed by the rear panel 2PD and the angle formed by the rear panel 2PE and the right rear panel 2PF. That is, the initial shape of the rear stopper 14 is set to a shape complementary to the shape of the rear side portion of the octagonal box 2. The first actuator 30 is maintained in a non-driven state. Further, the distance between the rear plate 25B of the rear stopper 14 and the front plate 40B of the front stopper 15 at the intermediate position is equal to the front-rear length of the octagonal box 2 (the distance between the outer surfaces of the front panel 2PA and the rear panel 2PE). As described above, the intermediate position (front / rear position) of the rear stopper 14 is set in advance. Thereby, the distance between the rear plate 25B of the rear stopper 14 and the front plate 40B of the front stopper 15 at the initial position is longer than the longitudinal length of the octagonal box 2.

  Each flap bending member 47 includes the locking portion 49 and the inclined portion 47D as described above. The select switch is selected in the fourth molding mode.

  The operator sets the octagonal box 2 on the base 13 between the front stopper 15 and the rear stopper 14 in the same manner as in the first molding mode. At this time, the left and right lengths of the octagonal box 2 to be set are set to be shorter than the left and right lengths of the octagonal box 2 in the sealed form. For example, the set octagonal box 2 has a rectangular cross section in which the fold lines at the left and right ends of the front panel 2PA and the rear panel 2PE are bent at right angles, and the fold lines at the front and rear ends of the left panel 2PC and the right panel 2PG are not bent. It is good to take the form. Further, the front panel 2PA may be disposed so as to contact the front stopper 15.

  When the molding start switch is pressed while the octagonal box 2 is set on the base 13, the sixth actuator 48 is controlled to move the flap bending member 47 from the initial position to the post-drive position. At this time, as shown in FIG. 27A, the locking portions 49 of the flap bending members 47 lock the leading edges of the lower left flap 2LB and the lower right flap 2LD. When each flap bending member 47 rotates with the leading edges of the lower left flap 2LB and the lower right flap 2LD engaged with the engaging portions 49, as shown in FIG. The body part P is pushed out to the left and right through the lower left flap 2LB and the lower right flap 2LD. This is because when the lower left flap 2LB and the lower right flap 2LD extend horizontally in a state where the tip edges of each other are attached, the body portion P has the same left and right length as that of the sealing form. The octagonal box 2 is pushed left and right by the left and right flap bending members 47 via the lower left flap 2LB and the lower right flap 2LD, thereby the left and right positions of the left panel 2PC and the right panel 2PG are determined, and a predetermined folding line is formed. It is bent and molded.

  Further, the second actuator 33 is controlled to move the rear stopper 14 from the initial position to the intermediate position. As a result, the octagonal box 2 is pressed between the front stopper 15 and the rear stopper 14, and the front and rear positions of the front panel 2PA and the rear panel 2PE are determined, and the corners of the left and right ends of the front panel 2PA and the rear panel 2PE are determined. The angle is determined, and a predetermined fold line is bent and molded.

  As shown in FIG. 28C, when the flap bending member 47 approaches the post-drive position, the lower left flap 2LB and the lower right flap 2LD are pushed by the proximal end portion of the pressing portion 47B, and the lower left flap 2LB. And the front-end edge of lower right flap 2LD remove | deviates from the latching | locking part 49. FIG. At this time, since the leading edges of the lower left flap 2LB and the lower right flap 2LD face each other via the lower wall 13B and are arranged along the center line C, the lower left flap 2LB and the lower right flap 2LD do not overlap each other. Absent. In this way, the octagonal box 2 is formed.

  The operator performs the accommodation of the article and the bending of the upper flap U as in the first molding mode. In addition, the presence or absence of accommodation of articles can be selected as appropriate.

  Next, when the delivery switch is pressed, the fourth actuator 37 is controlled to move the front stopper 15 from the initial position to the post-drive position (retracted position), and the octagonal box 2 can be advanced. Then, the third actuator 34 is controlled, the rear stopper 14 moves from the intermediate position to the delivery position, and the octagonal box 2 slides on the base 13 and is pushed forward. At this time, as in the first molding mode, the lower left flap 2LB and the lower right flap 2LD slide on the left and right flap bent members 47 and pass through the gap between the free roller 21 and the upper plate 13A.

  When the box sensor 70 confirms that the octagonal box 2 is on the front end of the base 13, that is, the rear end of the lower conveyor 60 </ b> A, the sixth actuator 48 is controlled so that the flap bending member 47 is moved to the post-drive position. And the third actuator 34 is controlled to move the rear stopper 14 from the delivery position to the initial position, and the fourth actuator 37 is controlled to move the front stopper 15 from the post-drive position to the initial position. And the shaping | molding part 10 returns to the original state. Thereby, the next octagonal box 2 can be formed.

  The operation of the taping portion 11 with respect to the octagonal box 2 molded in the fourth molding mode is the same as in the first molding mode.

  In the fourth molding mode, the left and right lengths of the body P of the octagonal box 2, the modified octagonal box 3, the hexagonal box 4 and the like are longer than the left and right lengths of the front panel 2PA and the rear panel 2PE. Suitable for large boxes.

  In addition to the operation of the fourth molding mode, the box body 2P may be pressed toward the left and right inward by the left and right body pressing members 43.

  The effect of the box making machine 1 configured as described above will be described. The box making machine 1 can execute a plurality of molding modes, and can mold boxes having various shapes. The box making machine 1 is molded from the outside of the box by the front stopper 15, the rear stopper 14, the left and right body pressing members 43, and the left and right flap bending members 47. It is possible to maintain the open state. For this reason, the article can be easily accommodated. Further, since the molding device is not inserted inside the body portion P, a drive mechanism for inserting and removing the molding device is not required, and the box making machine 1 can be simplified and miniaturized.

  Since the front stopper 15, the rear stopper 14, the left and right body pressing members 43, and the left and right flap bending members 47 can be changed in position and angle according to the shape of the box, various shapes of boxes It can correspond to. In particular, the box making machine 1 can perform box making even when the left and right side surfaces are inclined with respect to the front-rear direction.

  Further, various molding modes can be changed simply by operating the select switch, and the workload on the operator is small. In particular, regardless of which molding mode the operator selects, the operation of the box making machine 1 at the time of box making is only pressing the molding start switch and the delivery switch, and the work is not changed.

  The box making machine 1 has a taping section 11 downstream (front) of the molding section 10 and can automatically seal the box after molding and housing the article.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. The box making machine 1 according to the present embodiment has been described as a case where an operator sets the box in a predetermined position and accommodates an article. However, the box feeding apparatus and the article supply apparatus are described as the box making machine 1. The box may be set and the article may be automatically accommodated. Further, the molding start switch and the delivery switch may be omitted, and the molding may be automatically started and the box may be sent out by a predetermined program.

  Further, when the second or third molding mode is not performed, the first actuator 30 may be omitted, and the adjustment plate 25E may be directly coupled to the rear surface of the rear plate 25C. In addition, each configuration of the above embodiment is not an essential configuration, and can be appropriately selected.

1: Box making machine 10: Molding part 11: Taping part 13: Base 13A: Upper plate 13B: Lower wall 14: Rear stopper 15: Front stopper 16: Body pressing device 17: Flap bending device 25B: Rear plate 25C: Rear side plate 30: First actuator 33: Second actuator 34: Third actuator 37: Fourth actuator 40B: Front plate 40C: Front side plate 43: Body pressing member 43A: Rod-shaped member 43D: Pressing block 44: Fifth Actuator 47: Flap bending member 47A: Shaft 47B: Pressing portion 47D: Inclined portion 48: Sixth actuator 49: Locking portion 49A: Claw portion 49D: Base end portion 49E: Tip end portion 60: Conveying device 60A: Lower conveyor 61 : Lower correction device 62: Lower taping unit 63: Upper taping unit 73: Upper correction device

Claims (11)

A vertically extending barrel portion; a plurality of upper flaps provided on an upper edge of the barrel portion; and a plurality of lower flaps provided on a lower edge of the barrel portion, wherein the lower flap is A front lower flap provided at the lower edge of the front portion of the trunk, a rear lower flap provided at the lower edge of the rear portion, a left lower flap provided at the lower edge of the left portion, and a lower edge of the right portion A box making machine that forms a box including a lower right flap provided,
A base extending back and forth,
A pair of left and right flap bending members provided on the left and right sides of the base, and pivoting about a pivot shaft extending in the front-rear direction, and having a locking portion at the tip;
The box has the body portion opened in a generally cylindrical shape, the front lower flap is bent backward from the body portion, the rear lower flap is bent forward from the body portion, and the lower left With the flap and the lower right flap hanging from the trunk, the front lower flap and the rear lower flap are placed on the base,
The left and right flap folding members are pivoted inward to the left and right to lock the leading edges of the lower left flap and the lower right flap at the locking portion, and the lower left flap and the lower right flap are connected to the body. And folding the body part in the left-right direction by arranging the tip edges of the lower left flap and the lower right flap at the center in the left-right direction of the body part, and the shape of the body part is changed. A box making machine characterized by trimming. The flap bending member has an inclined portion inclined in a direction away from an outer surface of the lower left flap and the lower right flap at a tip portion,
2. The box making machine according to claim 1, wherein the locking portion includes a claw portion that protrudes from a tip of the inclined portion toward the lower left flap and the lower right flap.   3. The box making according to claim 2, wherein the base includes an upper plate having a main surface facing up and down and extending in the front-rear direction, and a lower wall hanging from the lower surface of the upper plate and extending in the front-rear direction. Machine.   2. The box making machine according to claim 1, wherein the locking portion is formed in a U shape surrounding both ends and end surfaces of the lower left flap and the lower right flap. Above the base, having a front stopper and a rear stopper arranged at a distance from each other in the front-rear direction,
The box making machine according to any one of claims 1 to 4, wherein the rear stopper moves back and forth and sandwiches the body portion with the front stopper. A transport device provided on the front side of the base and supporting the box from below the lower left flap and the lower right flap;
An extrusion device that pushes the box mounted on the base from the rear to the front and moves it on the transport device;
6. The box making machine according to claim 5, wherein the front side stopper is provided so as to be retractable below the box supported by the base.   A lower taping unit for attaching an adhesive tape extending in the front-rear direction to tip portions of the lower left flap and the lower right flap facing each other with respect to the box conveyed forward by the conveying device. Item 6. A box making machine. The upper flap is provided at the upper edge of the left and right side portions of the body portion, and has an upper left flap and an upper right flap whose front ends face each other at the center in the left and right direction,
An upper taping unit for attaching an adhesive tape extending in the front-rear direction to the mutually opposing tips of the upper left flap and the upper right flap with respect to the box conveyed forward by the conveying device. Item 7. A box making machine according to Item 7. The trunk portion is disposed on the front side, and has a front panel whose main surface faces front and rear,
9. The apparatus according to claim 6, further comprising a correction device that abuts on the front panel of the box that is transferred forward by the transfer device and corrects the shape of the box. 10. The box making machine described in the item. The correction device is supported to be rotatable about a rotation axis extending to the left and right at the tip of the arm, an arm supported rotatably about the rotation axis extending to the left and right on the base, A roller extending right and left, and a biasing member provided between the base and the arm,
The arm is between a protruding position at which the roller can be brought into contact with the front panel of the box, which is transferred forward by the transfer device, and a retracted position at which the roller is retracted above or below the box. Can be rotated,
The biasing member biases the arm toward the protruding position,
The arm is moved to a retracted position against a biasing force of the biasing member when the roller is pressed against the front panel of the box that is transported forward by the transporting device. The box making machine according to claim 9. Wherein the base of the orthodontic devices, box making machine according to claim 10, characterized in that it is arranged on at least one of the upper and lower than the box making body conveyed forward by the conveying device.

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