JP6384148B2 - Box making apparatus and box making method - Google Patents

Description

  The present invention relates to a box making apparatus and a box making method.

  Conventionally, boxes having various shapes have been proposed. For example, a box in which a buffer portion is formed by bending a plurality of cardboards punched into a predetermined shape at a desired location to form a space is also known. In order to automate the assembly of such various boxes, a box making apparatus and a box making method according to the characteristics of the box have been proposed. The box assembly process may include a step of bending the sheet material in a state where the box is unfolded and inserting a nail portion provided at the tip of the nail into a nail insertion hole extending parallel to the bending direction. In such a process, it is required to accurately guide the nail portion to the nail insertion hole. A corrugated cardboard box assembly apparatus that can cope with such a process is known (see, for example, Patent Document 1).

JP 9-239870 A

  However, the cardboard box assembly apparatus disclosed in Patent Document 1 cannot insert the nail pushing member at a predetermined position because the nail pushing member is expanded and the nail portion provided at the tip of the folding nail is inserted into the nail insertion hole. Not applicable in some cases.

  In one aspect, the box making apparatus and the box making method disclosed in this specification are intended to bend a sheet material and properly insert an insertion piece provided in the sheet material into an insertion hole provided in the sheet material. And

The box making apparatus disclosed in this specification is configured such that a part of a sheet material is bent a plurality of times along a fold line, and an insertion piece provided at the released end portion of the sheet material is used as the fold line. a Seihako apparatus for forming a buffer portion by plugging the insertion hole formed in the sheet material in parallel, bent a plurality of times in said sheet material, keeping the shapes of a plurality of locations corners are formed The shape-retaining member and a portion of the sheet material held by the shape-retaining member are sandwiched, and while maintaining the shape of the portion, the insertion piece is rotated toward the insertion hole, and the difference A sandwiching portion for inserting the insert piece into the insertion hole.

The box making method of the present specification includes a step of bending a part of a sheet material a plurality of times along a fold line, and a step of arranging a shape-retaining member that maintains the bent shape at the bent portion of the sheet material. Holding the bent portion while maintaining a shape having a plurality of corners formed at the bent portion, retreating the shape retaining member from the bent portion, The sandwiched portion is rotated while maintaining the shape of the portion, and the insertion piece provided at the released end of the sheet material is formed on the sheet material in parallel to the fold line. And a step of forming a buffer portion by inserting into the insertion hole.

  According to the box making apparatus and the box making method disclosed in this specification, the sheet material can be bent, and the insertion piece provided in the sheet material can be appropriately inserted into the insertion hole provided in the sheet material.

FIG. 1 is a perspective view showing a schematic configuration of a box making apparatus according to an embodiment. FIG. 2 is a block diagram of the box making apparatus of the embodiment. 3A is a perspective view of the main body of the box making apparatus according to the embodiment as viewed from the front side, and FIG. 3B is a perspective view of the main body of the box making apparatus according to the embodiment as viewed from the rear side. . FIG. 4 is an explanatory diagram of the sheet material in a state where the box is unfolded. 5A is a perspective view of the sheet material in a state where the first buffer portion is formed, and FIG. 5B is a perspective view of the sheet material in a state where the first folding is performed. FIG. 5C is a perspective view of the sheet material in a state where the second folding is performed, and FIG. 5D is a perspective view of the sheet material which is folded as the third time and is completed as a box. FIG. 6 is an explanatory diagram showing the locus of rotation when the third bending is performed. FIG. 7 is a six-side view of the installation table on which the sheet material is installed, (A) is a plan view, (B) is a front view, (C) is a rear view, (D) is a right side view, and (E). Is a left side view, and (F) is a bottom view. FIG. 8A is a plan view of a first claw portion provided in the box making apparatus of the embodiment, and FIG. 8B is an explanatory diagram showing a state in which the first claw portion is opened and closed. FIG. 9A is a plan view of a second claw portion provided in the box making apparatus of the embodiment, and FIG. 9B is an explanatory view showing a state in which the second claw portion is opened and closed. FIG. 10A is an explanatory view schematically showing a state in which the sheet material folded by the first clamping portion is going to be clamped, and FIG. 10B shows the sheet material folded by the first clamping portion. FIG. 10C is an explanatory diagram schematically showing a state in which the first claw portion is retracted, and FIG. 10D is a diagram in which the first clamping unit rotates. It is explanatory drawing which shows a mode typically. FIG. 11A is a perspective view of the main body of the box making apparatus that performs the first folding from the front side, and FIG. 11B illustrates the main body of the box making apparatus that performs the first folding from the rear side. FIG. FIG. 12 is an explanatory diagram schematically showing a state in which the sheet material pressed against the first step block is bent. FIG. 13A is a perspective view of the main body of the box making apparatus that moves the first pusher and the second pusher to the position where the second bending is performed, and FIG. 13B shows the second time. It is the perspective view which looked at the main-body part of the box making apparatus which moves a 1st pusher and a 2nd pusher to the position which bends from the back side. FIG. 14A is a perspective view of the main body of the box making apparatus in which the guide plate is inserted into the second insertion hole as viewed from the front side while performing the second folding, and FIG. 14B is the second folding. It is the perspective view which looked at the main-body part of the box making apparatus which inserts a guide plate in the 2nd insertion hole from the rear side. FIG. 15A is a perspective view of the main body portion of the box making apparatus that holds the sheet material against the first step block and the second step block by closing the first claw portion and the second claw portion, as viewed from the front side. Yes, FIG. 15B is a view of the main body of the box making apparatus that holds the sheet material against the first step block and the second step block by closing the first claw portion and the second claw portion from the rear side. It is a perspective view. FIG. 16A is a perspective view of the main body of the box making apparatus with the first pusher and the second pusher retracted from the front side, and FIG. 16B is the first pusher and the second pusher. It is the perspective view which looked at the main-body part of the box making apparatus which retracted | retracted from the rear side. FIG. 17A is a perspective view of the main body portion of the box making apparatus that sandwiches the sheet material folded by the first and second sandwiching portions when viewed from the front side, and FIG. It is the perspective view which looked at the main-body part of the box making apparatus which clamped the sheet | seat of the state bent by the clamping part and the 2nd clamping part from the rear side. 18A is a perspective view of the main body of the box making apparatus with the first and second claws retracted from the front side, and FIG. 18B is the first and second claws. It is the perspective view which looked at the main-body part of the box making apparatus which retracted | retracted from the rear side. FIG. 19A shows the main body of the box making apparatus in which the first clamping part and the second clamping part are rotated to bend the third time and the insertion pieces are inserted into the first insertion hole and the second insertion hole, respectively. FIG. 19B is a perspective view of the first insertion hole and the second insertion hole while rotating the first clamping part and the second clamping part and performing the third bending. It is the perspective view which looked at the main-body part of the box making apparatus which inserts an insertion piece from the rear side. FIG. 20A is a perspective view of the main body portion of the box making apparatus in which the first clamping portion and the second clamping portion are retracted upward, and FIG. 20B is a perspective view of the first clamping portion and the second clamping portion. It is the perspective view which looked at the main-body part of the box making apparatus which retracted the clamping part upwards from the back side. FIG. 21A is a perspective view of the main body portion of the box making apparatus in which the first holding portion and the second holding portion are rotated and retracted, and FIG. 21B is a perspective view of the first holding portion and the second holding portion. It is the perspective view which looked at the main-body part of the box making apparatus which rotated and retracted 2 pinching parts from the rear side. FIG. 22A is a perspective view of the main body of the box making apparatus from which the assembled box is discharged, and FIG. 22B is the rear view of the main body of the box making apparatus from which the assembled box is discharged. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, in the drawings, the dimensions, ratios, and the like of each part may not be shown so as to completely match the actual ones. Further, depending on the drawings, components that are actually present may be omitted for convenience of explanation, or dimensions may be exaggerated from the actual drawing. In the following description, the front, rear, left, and right sides of the sheet material will be described as the directions shown in FIG.

(Embodiment)
First, a schematic configuration of the box making apparatus 100 according to the embodiment will be described with reference to FIGS. 1, 2, and 3. FIG. 1 is a perspective view illustrating a schematic configuration of a box making apparatus 100 according to an embodiment. FIG. 2 is a block diagram of the box making apparatus 100 of the embodiment. 3A is a perspective view of the main body of the box making apparatus 100 of the embodiment as viewed from the front side, and FIG. 3B is a perspective view of the main body of the box making apparatus 100 of the embodiment as viewed from the rear side. It is.

  Referring to FIG. 1, the box making apparatus 100 includes a frame 101. A caster 101 a for moving the box making apparatus 100 is attached to the lower part of the frame 101. In addition, leg portions 101 b for stably installing the box making apparatus 100 are provided at the four corners of the lower portion of the frame 101. A support column 103 is installed in the frame 101, and a main body 102 is installed on the support column 103. A top plate 104 included in the main body 102 is installed on the support pillar 103. A fishing plate 105 is fished on the top plate 104. The fishing plate 105 is provided with two first pushers 106 and one second pusher 107. The fishing plate 105 is provided on the top plate 104 so as to be movable up and down by a fishing shaft 106a and a fishing shaft 107a. In the frame 101, an installation table 108 on which the sheet material 1 as a material of the box 11 to be assembled is installed. The sheet material 1 is positioned by suction.

  Referring to FIG. 2, the box making apparatus 100 includes two first pushers 106 and one second pusher 107. The first pusher 106 and the second pusher 107 are provided in accordance with the number and positions of the buffer parts described later. The first pusher 106 and the second pusher 107 descend according to the position of each fold line provided on the sheet material 1 described later, and bend the sheet material 1 along each fold line. Each first pusher 106 includes an elevating drive unit 106b and a positioning drive unit 106c. Similarly, the second pusher 107 includes an elevating drive unit 107b and a positioning drive unit 107c. The raising / lowering drive part 106b and the raising / lowering drive part 107b raise / lower the fishing board 105 synchronously, and raise / lower the 1st pusher 106 and the 2nd pusher 107. As shown in FIG. The positioning drive unit 106c and the positioning drive unit 107c move the first pusher 106 and the second pusher 107 to the positions of the desired folding lines, respectively.

  The box making apparatus 100 includes a guide plate 109 as a guide member. Referring to FIG. 1, the guide plate 109 is provided so as to protrude from the upper surface of the installation plate 108 on which the sheet material 1 that is the material of the box 11 is installed. Guide plate 109. It is installed so that it can be raised and lowered by the raising / lowering drive part 109a. The guide plate 109 is detachably provided in the second insertion hole 2b, as will be described in detail later. And when the insertion piece 5a1 is inserted in the 2nd insertion hole 2b, it is set as the state inserted in the 2nd insertion hole 2b. The guide plate 109 inserted into the second insertion hole 2b guides the insertion piece 5a1 into contact with the second insertion hole 2b.

  The box making apparatus 100 includes a first claw portion 110 as a shape retaining member. As will be described in detail later, the box making apparatus 100 of the present embodiment includes four first claw portions 110 in order to form two second buffer portions 4. That is, two first claw portions 110 are provided to form one second buffer portion 4. Each of the first claw portions 110 includes an opening / closing drive portion 110a. The box making apparatus 100 includes a second claw portion 111 as a shape retaining member. The second claw portion 111 is used to form the third buffer portion 5. The 2nd nail | claw part 111 is provided with the opening / closing drive part 111a.

  The box making apparatus 100 includes a first clamping unit 112 and a second clamping unit 113. The first clamping unit 112 is used to form the second buffer unit 4. Since the 2nd buffer part 4 is formed in two places, two 1st clamping parts 112 are also prepared in connection with this. The first clamping unit 112 includes a forward / reverse drive unit 112a and a rotation drive unit 112b. The second clamping part 113 is used for forming the third buffer part 5. The third buffer 5 is provided in two places in parallel in the left-right direction. For this reason, the two 2nd clamping parts 113 are prepared in parallel. Each of the second clamping parts 113 includes a forward / reverse drive part 113a. Moreover, the 2nd clamping part 113 is provided with the rotation drive part 113b. However, the rotation drive unit 113b is provided with one rotation drive unit 113b that rotates the two second clamping units 113 simultaneously.

  The box making apparatus 100 includes a control unit 120. The control unit 120 is electrically connected to the first pusher 106, the second pusher 107, the guide plate 109, the first claw part 110, the second claw part 111, the first clamping part 112, and the second clamping part 113. And control these operations.

  Next, the main body 102 of the box making apparatus 100 will be described in detail with reference to FIG. Specifically, the arrangement of each component included in the box making apparatus 100 will be described. In the main body 102, first step blocks 114 are provided on both sides of the installation base 108, and a first clamping unit 112 is arranged in parallel with the first step blocks 114. That is, the first clamping unit 112 is also provided on both sides of the installation table 108. Two first step blocks 114 are provided on one side, and the first sandwiching portion 112 is disposed therebetween. The first step block 114 bends the sheet material 1 in cooperation with the first pusher 106 disposed above. That is, when the sheet material 1 is pressed against the first step block 114 by the first pusher 106, a fold along the step of the first step block 114 is formed. A first claw portion 110 is disposed on the side of the first step block 114.

  A second step block 115 is provided on the rear side of the installation table 108, and a second sandwiching portion 113 is disposed in parallel with the second step block 115. The second step block 115 bends the sheet material 1 in cooperation with the second pusher 107 disposed above. That is, when the sheet material 1 is pressed against the second step block 115 by the second pusher 107, a fold along the step of the second step block 115 is formed. Four second step blocks 115 are prepared, a second claw portion 111 is disposed at the center, and a second holding portion 113 is disposed across the second step block 115.

  Here, with reference to FIG.4 and FIG.5, the sheet | seat material 1 used as the box 11 by being assembled is demonstrated. If FIG. 4 is referred, the sheet | seat material 1 will be provided with the 1st surface part 2 used as a rectangular baseplate part in the center part. First insertion holes 2 a are provided at the four corners of the first surface portion 2. The longitudinal direction of the first insertion hole 2a coincides with the front-rear direction of the sheet material 1. As will be described later, the insertion piece 3a1 provided at the end of the rising wall 3a is inserted into the first insertion hole 2a and the fourth surface portion 4a forming the second buffer portion 4 is released. The insertion piece 4a1 formed at the end is inserted. An extension 3a2 is provided on the rising wall 3a. The extension part 3a2 positions an article placed on the first buffer part 3.

  A rising wall portion 3a, a third surface portion 3b, and a second surface portion 3c that form the first buffer portion 3 are continuously provided behind the first surface portion 2. Specifically, the second surface portion 3c is continuously provided behind the first surface portion 2, and the third surface portion 3b is further provided continuously behind the second surface portion 3c. On both the left and right sides of the third surface portion 3b, rising wall portions 3a are continuously provided. An insertion piece 3a1 is provided at the end of the rising wall 3a. The rising wall portion 3a forms a wall surface erected on the first surface portion 2 when the insertion piece 3a1 is inserted into the first insertion hole 2a. The rising wall portion 3a functions as a guide plate when the insertion piece 4a1 is inserted into the first insertion hole 2a as will be described in detail later. The second surface portion 3c becomes a front plate of the first buffer portion 3 when assembled. The 3rd surface part 3b becomes a top plate of the 1st buffer part 3 when assembled. A first fold line L1 is set at the boundary between the first surface portion 2 and the second surface portion 3c. Then, two second insertion holes 2b are provided along the first fold line L1. The longitudinal direction of the second insertion hole 2 b coincides with the left-right direction of the sheet material 1. As will be described later, an insertion piece 5a1 formed at the released end of the fourth surface portion 5a forming the third buffer portion 5 is inserted into the second insertion hole 2b. A second fold line L2 is set at the boundary between the second surface portion 3c and the third surface portion 3b. A third fold line L3 is set at the boundary between the third surface portion 3b and the rising wall portion 3a. When the sheet material 1 is bent at the first fold line L1, the second fold line L2, and the third fold line L3, and the insertion piece 3a1 is inserted into the first insertion hole 2a, FIG. 1st buffer part 3 is formed in the central part of sheet material 1 as shown in Drawing 5 (D). The longitudinal direction of the insertion piece 3a1 extends in a direction orthogonal to the first fold line L1 and the second fold line L2.

  A fourth surface portion 4a, a third surface portion 4b, and a second surface portion 4c that form the second buffer portion 4 are connected to the left and right sides of the first surface portion 2, respectively. Specifically, the second surface portion 4c is continuously provided on the side of the first surface portion 2, and the third surface portion 4b is continuously provided on the second surface portion 4c. Further, a fourth surface portion 4a is formed on the side of the third surface portion 4b. An insertion piece 4a1 is provided at the released end of the fourth surface portion 4a. Here, the released end portion means an end portion that is separated from other portions and can define a contour. A fourth fold line L4 is set at the boundary between the fourth surface portion 4a and the third surface portion 4b. A fifth fold line L5 is set at the boundary between the third surface portion 4b and the second surface portion 4c. A sixth fold line L6 is set at the boundary between the second surface portion 4c and the first surface portion 2. When the sheet material 1 is bent along the fourth fold line L4, a corner is formed between the fourth surface portion 4a and the third surface portion 4b as shown in FIG. When the sheet material 1 is bent along the fifth fold line L5, a corner is formed between the third surface portion 4b and the second surface portion 4c as shown in FIG. When the sheet material 1 is bent along the sixth fold line L6, a corner is formed between the second surface portion 4c and the first surface portion 2 as shown in FIG. And the 2nd buffer part 4 whose cross section is a rectangle is formed by inserting the insertion piece 4a1 in the 1st insertion hole 2a. Here, the longitudinal direction of the first insertion hole 2a coincides with the extending direction of the folding lines L4, L5, L6, and the first insertion hole 2a is parallel to the folding lines L4, L5, L6. It is in a provided state.

  On the rear end side of the first surface portion 2, a second surface portion 3 c and a third surface portion 3 b that form the first buffer portion 3 are formed by punching, and a fourth surface portion 5 a and a third surface portion that form the third buffer portion 5. 5b and the 2nd surface part 5c are provided in a row. Specifically, the second surface portion 5c is connected to the rear of the extended portion 21 provided on the first surface portion 2, and the third surface portion 5b is connected to the second surface portion 5C. Further, a fourth surface portion 5a is formed behind the third surface portion 5b. An insertion piece 5a1 is provided at the released end of the fourth surface portion 5a. Here, the released end portion means an end portion that is separated from other portions and can define a contour. That is, although the 4th surface part 5a is stamped and formed in the 3rd surface part 3b, it raise | generates the 4th surface part 5a in an assembly process, and is separated from another part and an outline is demarcated. The released end portion is intended to include such an end portion. A seventh fold line L7 is set at the boundary between the fourth surface portion 5a and the third surface portion 5b. An eighth fold line L8 is set at the boundary between the third surface portion 5b and the second surface portion 5c. A ninth fold line L9 is set at the boundary between the second surface portion 5c and the extended portion 21. When the sheet material 1 is bent along the seventh fold line L7, a corner is formed between the fourth surface portion 5a and the third surface portion 5b as shown in FIG. 5B. When the sheet material 1 is bent along the eighth fold line L8, a corner is formed between the third surface portion 5b and the second surface portion 5c as shown in FIG. When the sheet material 1 is bent along the ninth fold line L9, a corner is formed between the second surface portion 5c and the extended portion 21 as shown in FIG. And the 3rd buffer part 5 whose cross section is a rectangle is formed by inserting the insertion piece 5a1 in the 2nd insertion hole 2b. Here, the longitudinal direction of the second insertion hole 2b coincides with the extending direction of the folding lines L7, L8, L9, and the second insertion hole 2b is parallel to the folding lines L7, L8, L9. It is in a provided state. The seat portion 1 is provided with a lid portion 6 including a wall portion 6 a and an overlapping portion 6 b in front of the first surface portion 2. The lid portion 6 is folded so that the overlapping portion 6b overlaps the third surface portion 3b after the article is stored in the first buffer portion 3, thereby sealing the first buffer portion 3.

  Thus, the box 11 is formed by bending the sheet material 1 a plurality of times at each fold line and finally inserting the insertion piece into the insertion hole. A third buffer portion 5 is formed. Here, paying attention to the formation process of the second buffer portion 4, first, the sheet material 1 is bent along the folding lines L4, L5, and L6. Then, the insertion piece 4a1 provided at the released end of the sheet material 1 is inserted into the first insertion hole 2a formed in the sheet material 1 in parallel with the folding lines L4, L5, L6. 2 buffer part 4 is formed. As described above, when the folding operation of the sheet material 1 is repeated a plurality of times and the insertion piece 4a1 is finally inserted into the first insertion hole 2a, the final folding operation is performed as shown in FIG. A rotation operation with the bending line L6 as a rotation axis is involved. As described above, when the insertion piece 4a1 is inserted into the first insertion hole 2a with the rotation operation, the locus drawn by the insertion piece 4a1 is required to be accurately guided to the first insertion hole 2a.

  Focusing on the formation process of the third buffer portion 5, first, the sheet material 1 is bent along the folding lines L7, L8, and L9. Then, the insertion piece 5a1 provided at the released end of the sheet material 1 is inserted into the second insertion hole 2b formed in the sheet material 1 in parallel with the folding lines L7, L8, L9. Three buffer portions 5 are formed. In this way, when the folding operation of the sheet material 1 is repeated a plurality of times and finally the insertion piece 5a1 is inserted into the second insertion hole 2b, the final bending operation is performed by the second buffer portion 4 shown in FIG. Similarly to the case, a rotation operation with the ninth fold line L9 as a rotation axis is involved. As described above, when the insertion piece 5a1 is inserted into the second insertion hole 2b with a rotation operation, the locus drawn by the insertion piece 5a1 is required to be accurately guided to the second insertion hole 2b. The box making apparatus 100 of this embodiment includes a guide plate 109, a first claw portion 110, a second claw portion 111, a first clamping portion 112, and a second clamping portion 113 in order to realize these operations.

  Here, the guide plate 109, the first claw portion 110, the second claw portion 111, the first clamping portion 112, and the second clamping portion 113 will be described in detail. First, the guide plate 109 will be described with reference to FIGS. The guide plate 109 functions as a guide member that guides the insertion piece 5a1 to the second insertion hole 2b while contacting the insertion piece 5a1 that is sandwiched and rotated by the second clamping portion 113. The guide plate 109 is provided so as to be able to appear in and out of the through hole 108a1 provided in the installation plate 108a by an elevating drive unit 109a provided on the lower surface of the installation plate 108a included in the installation table 108. The through hole 108a1 is provided in accordance with the position of the second insertion hole 2b provided in the sheet material 1. For this reason, if the raising / lowering drive part 109a is operated in the state which installed the sheet | seat material 1 in the installation stand 108, the guide plate 109 will be in the state which can be freely inserted or extracted in the 2nd insertion hole 2b. The guide plate 109 is in a state of being inserted into the second insertion hole 2b when the insertion piece 5a1 is inserted into the second insertion hole 2b. Thereby, the insertion piece 5a1 which has rotated contacts the guide plate 109 and is guided to the second insertion hole 2b. In addition, since the insertion piece 4a1 which forms the 2nd buffer part 4 is also inserted in the 1st insertion hole 2a, rotating, it is calculated | required that the insertion piece 4a1 is correctly guide | induced to the 1st insertion hole 2a. For this reason, it is convenient that the guide member is provided even in the insertion operation of the insertion piece 4a1 into the first insertion hole 2a. In response to such a request, in the insertion piece 4a1, the rising wall portion 3a forming the first buffer portion 3 functions as a guide member. That is, since the rising wall portion 3a is in a state where the insertion piece 3a1 is inserted into the first insertion hole 2a and is erected on the first surface portion 2, the insertion piece 4a1 is inserted into the first insertion hole 2a. Can lead. For this reason, a member corresponding to the guide plate 109 is unnecessary. In the present embodiment, the guide plate 109 guides the insertion piece 5a1 inserted into the second insertion hole 2b while rotating. However, as an operation for insertion into the insertion hole, the insertion without rotation operation is performed. You can also guide the pieces.

  Next, the first claw portion 110 will be described with reference to FIGS. 8 (A) and 8 (B). Referring to FIG. 8A, the first claw portion 110 has a bowl shape and is provided so as to be rotatable by the rotation shaft portion 1101. The first claw portion 110 performs a rotation operation with the rotation shaft portion 1101 as the rotation center by the opening / closing drive portion 110a. The 1st nail | claw part 110 functions as a shape-retaining member which maintains the shape of the location where the sheet material 1 was bent multiple times. The 1st nail | claw part 110 is provided in the space enclosed by the sheet | seat material 1 formed by bend | folding the sheet | seat material 1 with the 4th fold line L4 and the 5th fold line L5 so that it can appear. Thereby, the shape is maintained such that the corner bent at the fourth fold line L4 and the corner bent at the fifth fold line L5 are each approximately 90 °. Thus, when the angle of the corner portion is approximately 90 °, the insertion piece 4a1 can be easily inserted into the first insertion hole 2a. Referring to FIG. 8B, the two first claw portions 110 are arranged to face each other and can appear and disappear in a space surrounded by the sheet material 1 by performing an opening / closing operation. In FIG. 8B, a solid line indicates a closed state, that is, a shape-retaining state, and a two-dot chain line indicates an opened first claw portion 110.

  Next, the second claw portion 111 will be described with reference to FIGS. 9 (A) and 9 (B). Referring to FIG. 9A, each of the two second claw portions 111 has a hook shape, and is rotatably provided by the rotating shaft portion 1111. The 2nd nail | claw part 111 is arrange | positioned in the back-to-back state, and performs the rotation operation | movement centering on each rotating shaft part 1111 by the one opening / closing drive part 111a. The 2nd nail | claw part 111 functions as a shape-retaining member which maintains the shape of the location where the sheet material 1 was bent multiple times. The 2nd nail | claw part 111 is provided in the space enclosed by the sheet | seat material 1 formed by bend | folding the sheet | seat material 1 with the 7th fold line L7 and the 8th fold line L8 so that it can appear and disappear. Thereby, the shape is maintained such that the corner bent at the seventh fold line L7 and the corner bent at the eighth fold line L8 are approximately 90 °. Thus, when the angle of the corner portion is approximately 90 °, the insertion piece 5a1 can be easily inserted into the second insertion hole 2b. Referring to FIG. 9B, the two second claw portions 111 can be moved in and out of the space surrounded by the sheet material 1 by performing an opening / closing operation. In FIG. 9B, a solid line indicates a closed state, that is, a shape-retaining state, and a two-dot chain line indicates an open second claw portion 111.

  Next, the first clamping unit 112 will be described with reference to FIGS. 10 (A) to 10 (D). The 1st clamping part 112 clamps the location where the shape was maintained by the 1st nail | claw part 110 of the sheet | seat material 1, rotates the insertion piece 4a1 toward the 1st insertion hole 2a, and inserts the insertion piece 4a1 into 1st. 1 Insert into the insertion hole 2a. Moreover, the 2nd clamping part 113 clamps the location where the shape was maintained by the 2nd nail | claw part 111 of the sheet | seat material 1, rotates the insertion piece 5a1 toward the 2nd insertion hole 2b, and inserted piece 5a1. Is inserted into the second insertion hole 2b. Thus, the 1st clamping part 112 and the 2nd clamping part 113 perform a common operation | movement, and the basic structure is common in both. Therefore, only the first clamping unit 112 will be described below, and the description of the second clamping unit 113 will be omitted. FIGS. 10A to 10D are schematically drawn and do not show actual dimensional relationships. Referring to FIG. 10A, the first sandwiching portion 112 having a shape that holds the bent fourth surface portion 4a, third surface portion 4b, and second surface portion 4c is slidable on the base 1121. is set up. The base 1121 is in a state of being rotatable about the rotation shaft portion 1122 as an axis. The first clamping unit 112 is provided so as to be able to move forward and backward along the base 1121 by the forward / reverse drive unit 112a. When such a first sandwiching portion 112 is intended to sandwich the fourth surface portion 4a, the third surface portion 4b, and the second surface portion 4c that are bent as shown in FIG. If shape preservation by is not performed, for example, the following inconvenience is assumed. That is, the first clamping part 112 pushes the fourth surface part 4a by friction, the angle between the fourth surface part 4a and the third surface part 4b becomes larger than 90 °, and the position of the insertion piece 4a1 is larger than the desired position. It is assumed that the shape will protrude. If the insertion piece 4a1 is rotated toward the first insertion hole 2a while the position of the insertion piece 4a1 protrudes from the desired position, the insertion piece 4a1 is displaced. Therefore, as shown in FIG. 10 (B), the location where the shape is held by the first claw portion 110 is held by the first holding portion 112. Thereby, the clamping operation by the first clamping unit 112 can be completed while the position of the insertion piece 4a1 is maintained at a desired position. After the first clamping portion 112 appropriately clamps the fourth surface portion 4a, the third surface portion 4b, and the second surface portion 4c, the first claw portion 110 is retracted as shown in FIG. As shown in D), the first sandwiching portion 112 is rotated about the rotation shaft portion 1122 as an axis. Thereby, the insertion piece 4a1 can be rotated while drawing an appropriate locus, and can be inserted into the first insertion hole 2a.

  Next, the state of box making by the box making apparatus 100 will be described with reference to FIGS. The box making apparatus 100 processes the sheet material 1 and assembles the box 11 along the steps depicted in FIGS.

  FIG. 11A is a perspective view of the main body 102 of the box making apparatus 100 that performs the first folding, as viewed from the front side. FIG. 11B is a perspective view of the main body 102 of the box making apparatus 100 that performs the first folding, as viewed from the rear side. The sheet material 1 is installed in the main body portion 102 in a state where the first buffer portion 3 is formed. That is, the box making apparatus 100 starts assembling work from the state of the sheet material 1 shown in FIG. Then, as shown in FIGS. 11A and 11B, the two first pushers 106 and the second pusher 107 are lowered. At this time, the first pusher 106 is aligned with the position of the fourth fold line L4, and the second pusher 107 is aligned with the position of the seventh fold line L7. As shown in FIG. 12, the fourth fold line L <b> 4 is installed in accordance with the step of the first step block 114, and the first pusher 106 is lowered to press the sheet material 1 against the first step block 114. Then, the sheet material 1 is bent at the fourth fold line L4. Similarly, the sheet material 1 is also bent at the seventh fold line L7.

  FIG. 13A is a perspective view of the main body 102 of the box making apparatus 100 that moves the first pusher 106 and the second pusher 107 to the position where the second folding is performed, as viewed from the front side. FIG. 13B is a perspective view of the main body 102 of the box making apparatus 100 that moves the first pusher 106 and the second pusher 107 to the position where the second bending is performed, as viewed from the rear side. That is, the main body 102 temporarily retracts the first pusher 106 and the second pusher 107 upward after performing the first bending. Then, in order to perform the second bending, the position of the first pusher 106 is moved to the position of the fifth bending line L5 by the positioning driving unit 106c. Further, the position of the second pusher 107 is moved to the position of the eighth fold line L8 by the positioning drive unit 107c.

  FIG. 14A is a perspective view of the main body 102 of the box making apparatus 100 that is bent a second time and inserts the guide plate 109 into the second insertion hole 2b as viewed from the front side. FIG. 14B is a perspective view of the main body portion 102 of the box making apparatus 100 for performing the second folding and inserting the guide plate 109 into the second insertion hole 2b from the rear side. The box making apparatus 100 performs the second folding in the same manner as the first folding. At the same time, the guide plate 109 is raised by the elevating drive unit 109a, and the guide plate 109 is inserted into the second insertion hole 2b. In addition, the guide plate 109 should just be performed prior to the timing at which the insertion piece 5a1 is inserted into the second insertion hole 2b. Therefore, the timing for preparing the guide plate 109 is not required to be performed simultaneously with the second bending operation.

  FIG. 15A shows the main body 102 of the box making apparatus 100 that closes the first claw portion 110 and the second claw portion 111 and presses and holds the sheet material 1 against the first step block 114 and the second step block 115. It is the perspective view seen from the front side. FIG. 15B shows the main body 102 of the box making apparatus 100 that closes the first claw portion 110 and the second claw portion 111 and presses and holds the sheet material 1 against the first step block 114 and the second step block 115. It is the perspective view seen from the rear side. The box making apparatus 100 arranges the first claw part 110 and the second claw part 111 at locations where the second bending of the sheet material 1 is performed. Specifically, the 1st nail | claw part 110 is arrange | positioned in the location bent by the 4th fold line L4 and the 5th fold line L5. And the 3rd surface part 4b is pressed on the wall surface of the 1st level | step difference block 114 with the 1st nail | claw part 110. FIG. Moreover, the 2nd nail | claw part 111 is arrange | positioned in the location bent by the 7th bending line L7 and the 8th bending line L8. Then, the third claw portion 111 presses the third surface portion 5 b against the wall surface of the second step block 115.

  FIG. 16A is a perspective view of the main body 102 of the box making apparatus 100 with the first pusher 106 and the second pusher 107 retracted from the front side. FIG. 16B is a perspective view of the main body 102 of the box making apparatus 100 with the first pusher 106 and the second pusher 107 retracted from the rear side. In this state, the third surface portion 4b is pressed against the wall surface of the first step block 114 by the first claw portion 110, and the third surface portion 5b is pressed against the wall surface of the second step block 115 by the second claw portion 111. The state is maintained. In addition, since the fourth fold line L4, the fifth fold line L5, the seventh fold line L7, and the eighth fold line L8 are all subjected to the descending process, they can be easily bent. It has become.

  FIG. 17A is a perspective view of the main body 102 of the box making apparatus 100 that sandwiches the sheet material 1 that is bent by the first sandwiching section 112 and the second sandwiching section 113 as viewed from the front side. FIG. 17B is a perspective view of the main body 102 of the box making apparatus 100 that sandwiches the sheet material 1 that is bent by the first sandwiching section 112 and the second sandwiching section 113 as viewed from the rear side. The 1st clamping part 112 advances the 1st clamping part 112 by the back-and-forth drive part 112a, and clamps the location where the sheet | seat material 1 was bent. At this time, since the state where the first surface portion 4b is pressed against the wall surface of the first step block 114 by the first claw portion 110 is maintained, the first clamping portion 112 pushes the fourth surface portion 4a forward. There is no. As a result, the angle formed by the fourth surface portion 4a and the third surface portion 4b and the angle formed by the third surface portion 4b and the second surface portion 4c are both maintained at approximately 90 °. The piece 4a1 is kept in an appropriate position. Similarly, the 2nd clamping part 113 advances the 2nd clamping part 113 by the forward / backward drive part 113a, and clamps the location where the sheet | seat material 1 was bent. At this time, since the state in which the third surface portion 5b is pressed against the wall surface of the second step block 115 by the second claw portion 111 is maintained, the second clamping portion 113 pushes the fourth surface portion 5a forward. There is no. As a result, the angle formed by the fourth surface portion 5a and the third surface portion 5b and the angle formed by the third surface portion 5b and the second surface portion 5c are both maintained at approximately 90 °. The piece 5a1 is kept in an appropriate position.

  FIG. 18A is a perspective view of the main body 102 of the box making apparatus 100 with the first claw portion 110 and the second claw portion 111 retracted from the front side. FIG. 18B is a perspective view of the main body 102 of the box making apparatus 100 in which the first claw portion 110 and the second claw portion 111 are retracted as viewed from the rear side. That is, after the sheet material 1 is clamped by the first clamping unit 112 and the second clamping unit 113, the first claw unit 110 and the second claw unit 111 are retracted from the bent portions. This is because the shape of the bent portion is maintained by the first sandwiching portion 112 and the second sandwiching portion 113, so that the shape retention by the first and second claw portions 110 and 111 is not necessary.

  FIG. 19A shows that the insertion pieces 4a1 and 5a1 are respectively inserted into the first insertion hole 2a and the second insertion hole 2b while the first clamping part 112 and the second clamping part 113 are rotated to perform the third bending. It is the perspective view which looked at the main-body part 102 of the box making apparatus 100 to insert from the front side. FIG. 19B shows that the insertion pieces 4a1 and 5a1 are respectively inserted into the first insertion hole 2a and the second insertion hole 2b while the first clamping part 112 and the second clamping part 113 are rotated to perform the third bending. It is the perspective view which looked at the main-body part 102 of the box making apparatus 100 to insert from the back side. The first clamping unit 112 is rotated by the rotation driving unit 112b in a state where the sheet material 1 is clamped. At this time, the rotation axis is the sixth fold line L6. The sheet material 1 clamped by the first clamping unit 112 is held in an appropriate shape, and the insertion piece 4a1 is also held in an appropriate position. For this reason, the insertion piece 4a1 is easily inserted into the first insertion hole 2a. Furthermore, the insertion piece 3a1 provided in the rising wall part 3a which forms the 1st buffer part 3 ahead is inserted in the 1st insertion hole 2a. Thereby, the rising wall part 3a functions as a guide plate. That is, the insertion piece 4a1 rotates while slidingly contacting the rising wall portion 3a, and is guided to the first insertion hole 2a located at the lower edge of the rising wall portion 3a. In this manner, the insertion piece 4a1 retained in an appropriate position is guided by the rising wall portion 3a, whereby the insertion piece 4a1 is smoothly inserted into the first insertion hole 2a. On the other hand, the second clamping unit 113 is rotated by the rotation driving unit 113b while the sheet material 1 is clamped. At this time, the rotation axis is the ninth fold line L9. The sheet material 1 clamped by the second clamping unit 113 is held in an appropriate shape, and the insertion piece 5a1 is also held in an appropriate position. For this reason, the insertion piece 5a1 is easily inserted into the second insertion hole 2b. Further, the guide plate 109 is inserted into the second insertion hole 2b in advance. The insertion piece 5a1 rotates while sliding on the guide plate 109, and is guided to the second insertion hole 2b into which the guide plate 109 is inserted. In this way, the insertion piece 5a1 retained in an appropriate position is guided by the guide plate 109, whereby the insertion piece 4a1 is smoothly inserted into the first insertion hole 2a. Thus, the part clamped by the first clamping part 112 and the part clamped by the second clamping part 113 are rotated, and the insertion pieces 4a1, 5a1 are inserted into the first insertion hole 2a and the second insertion hole 2b. Thus, the second buffer portion 4 and the third buffer portion 5 are formed.

  FIG. 20A is a perspective view of the main body 102 of the box making apparatus 100 in which the first holding part 112 and the second holding part 113 are retracted upward, as viewed from the front side. FIG. 20B is a perspective view of the main body 102 of the box making apparatus 100 in which the first holding part 112 and the second holding part 113 are retracted upward, as viewed from the rear side. The first clamping unit 112 retracts the first clamping unit 112 by operating the forward / reverse drive unit 112a while being rotated by the rotation driving unit 112b. Since the first clamping unit 112 is in a rotated state, the retracting direction is upward. Similarly, the 2nd clamping part 113 evacuates the 2nd clamping part 113 by operating the back-and-forth advance drive part 113a in the state rotated by the rotation drive part 113b. Since the second sandwiching portion 113 is in a rotated state, the retracting direction is upward.

  FIG. 21A is a perspective view of the main body 102 of the box making apparatus 100 in which the first holding part 112 and the second holding part 113 are rotated and retracted from the front side. FIG. 21B is a perspective view of the main body 102 of the box making apparatus 100 in which the first holding part 112 and the second holding part 113 are rotated and retracted from the rear side. The first clamping unit 112 is further rotated by the rotation driving unit 112b from the state of being retracted upward and returned to the original position. Since the 1st clamping part 112 is the state retracted | saved upwards, it can return to the original position, without interfering with the sheet | seat material 1. FIG. Similarly, the 2nd clamping part 113 is further rotated by the rotational drive part 113b from the state retracted | saved upwards, and returns to the original position. Since the 2nd clamping part 113 is the state retracted | saved upwards, it can return to the original position, without interfering with the sheet | seat material 1. FIG.

  FIG. 22A is a perspective view of the main body 102 of the box making apparatus 100 from which the assembled box 11 is discharged as viewed from the front side. FIG. 22B is a perspective view of the main body 102 of the box making apparatus 100 from which the assembled box 11 is discharged as viewed from the rear side. Thus, by using the box making apparatus 100 of this embodiment, the sheet material 1 is bent, and the insertion pieces 4a1 and 5a1 provided in the sheet material 1 are provided in the first insertion hole 2a provided in the sheet material 1. The second insertion hole 2b can be appropriately inserted.

  Although the preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the specific embodiment, and various modifications, within the scope of the gist of the present invention described in the claims, It can be changed.

DESCRIPTION OF SYMBOLS 1 Sheet material 2 1st surface part 2a 1st insertion hole 2b 2nd insertion hole 3 1st buffer part 3a1 Insert piece 4 2nd buffer part 4a1 Insert piece 5 3rd buffer part 5a1 Insert piece 100 Box making apparatus 106 1st pusher 107 2nd pusher 108 Installation stand 108a1 Through-hole 109 Guide plate 110 1st nail | claw part 111 2nd nail | claw part 112 1st clamping part 113 2nd clamping part 114 1st level | step difference block 115 2nd level | step difference block 120 Control unit

Claims (3)

A difference formed in the sheet material by bending a part of the sheet material a plurality of times along the fold line, and inserting the insertion piece provided at the released end of the sheet material in parallel with the fold line. A box making device that forms a buffer portion by inserting it into the insertion hole,
A shape-retaining member kept bent multiple times, the shape of the portion where a plurality of corner portions are formed in the sheet material,
The portion of the sheet material, the shape of which is maintained by the shape-retaining member, is sandwiched, and while maintaining the shape of the portion, the insertion piece is rotated toward the insertion hole, and the insertion piece is inserted into the insertion portion. A clamping part to be inserted into the insertion hole;
Box making equipment.   2. The box making apparatus according to claim 1, wherein the shape retaining member is a claw portion provided so as to be able to appear and retract in a space surrounded by the sheet material formed by bending the sheet material. A step of bending a part of the sheet material a plurality of times along the folding line;
A step of arranging a shape-retaining member that maintains the bent shape at the bent portion of the sheet material;
Holding the bent portion while maintaining a shape having a plurality of corners formed in the bent portion;
Retracting the shape-retaining member from the bent portion;
The sandwiched portion was rotated while maintaining the shape of the portion, and the insertion piece provided at the released end of the sheet material was formed on the sheet material in parallel to the fold line. A step of forming a buffer part by inserting into the insertion hole;
Box making method.

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