JPH0739637Y2 - Assembly box automatic assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an automatic assembly apparatus for an assembly box.

(Prior Art) Conventionally, as a device of this type, for example, US Pat. No. 4,310,323 is used.
The one disclosed in the issue is known. As shown in FIG. 10, the box assembled by the assembling apparatus is composed of a corrugated board partition plate A and a box body B.
Explaining the assembling process by the assembling apparatus, the intermediate partition plate A is formed by bending a rectangular plate material A'as shown in FIGS. 9 (a) to 9 (d).
After being bent downward along a pair of fold lines b orthogonal to, it is bent upward along fold lines a to form an H shape in plan view. Next, as shown in FIG. 9 (e), the partition plate A is placed at a predetermined position on a substantially rectangular plate material B '. The plate material B'forms the box body B, and the bottom wall
It has B ₁ , side walls B ₂ and B ₂ , and top walls B ₃ and B ₃ . Each wall B ₁ , B ₂ , B ₃
Ear pieces B ₁ ′, B ₂ ′, and B ₃ ′ are connected in series on both sides of the. Then, as shown in FIG. 9 (f), the side walls B ₂ , B ₂ are erected by the assembling apparatus via the fold lines e, e, f, f, and at the same time, the ear pieces B ₁ ′, B 2 are formed. ₂ ', B _3' is folded so as to overlap the outer surface of the intermediate partition plate a. In addition, each ear piece B ₁ ′, B ₂ ′,
The B ₃ ′ and the partition plate A are adhered to each other through the adhesive applied to the ear pieces B ₁ ′, B ₂ ′ and B ₃ ′.

However, the box assembled by the assembly device is
As shown in the figure, the ear pieces B ₁ ′ and B ₂ ′, B ₂ ′ overlap the outer surface of the partition plate A to form a step. Such a step may come into contact with another object such as when the box is moved, and tear may occur from there.

Therefore, the inventor of the present invention, as shown in FIG.
We have devised a box with fewer steps formed on the outer surface. As shown in FIGS. 7 and 8, the box has a length W on the outer side of the partition plate C slightly shorter than the bottom wall D ₁ of the box body D, and the bottom wall D ₁ The length l of the ear piece D ₁ ′ is set to be substantially the same as the length L of the bottom wall D ₁ .

As a result, as shown in FIG. 7, a box with a small step can be formed without the tabs D ₂ ′ and D ₂ ′ overlapping the outer surface of the partition plate C. Moreover, the box is
The ear piece D ₁ ′ is part of the outer surface of the partition plate C and the ear pieces D ₂ ′, D ₂ ′.
Since it adheres to a part of the outer surface of the adhesive via an adhesive, the amount of the adhesive used is relatively small, and the plate material used as the material of the intermediate partition plate C may be relatively small, so that the material cost can be reduced. it can.

(Problems to be solved by the invention) However, when the box shown in FIG. 7 is to be assembled by the assembling apparatus disclosed in the US patent, the ear piece D ₁ ′ and the ear piece
D ₂ ', D _2' would interfere they together by folding of the are performed simultaneously, there is a disadvantage that the assembly of the box is difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned inconvenience and to provide an automatic assembling apparatus capable of easily forming an assembly box having a small number of steps on the outer surface side of a partition plate.

(Means for Solving the Problems) In order to achieve such an object, the present invention has an earpiece continuously connected to the front and rear edges of a rectangular bottom wall D ₁ constituting an assembly box via fold lines. Ear pieces connected to the front and rear edges of D ₁ ′ and a pair of side walls D ₂ erected on the left and right sides of the bottom wall D ₁ through fold lines, respectively.
The first and second folding plates 18 and 19 for folding inwardly the D ₂ ′ and the second folding plate 18 and 19 are provided, respectively, and swing from the horizontal position to the standing position in the folding direction of each ear piece D ₂ ′ of the side wall D _2. Freely movable first folding plate
18 'provided a pair at a time by each face the front and rear side of the side wall D ₂ corresponding to the bottom wall each ear piece D ₁ of the D _1' each ear piece D ₂ of the side wall D ₂ in the fold direction of in headed automated assembly device assembling box thus provided a pair to face the front and rear side of the bottom wall D ₁ each ear piece D ₁ 'corresponding to the second folding plate 19 movable up and down said bottom wall D ₁ , Piston rod of cylinder 1 fixed and held vertically
A pair of vertical lift bodies 3 having upper ends connected to 1a and being vertically moved by expansion and contraction of the piston rod 1a, and horizontal lift bars 4 horizontally extending at lower ends of the vertical lift bodies 3. And a pair of guide cylinders 5 equidistant from the center of each horizontal lift bar 4 and fixed upright, and both guide cylinders 5 are slidably vertically penetrated so that the horizontal lift bar 4 and the vertical lift body 3 are A pair of vertical guide shafts 11 for guiding in the vertical direction, and a rack 14 slidably provided along each vertical guide shaft 11 and extending vertically to the outer surface are provided, and suspended from the upper end of each vertical guide shaft 11. A pair of rack holders 12 connected to a coil spring 13 having elasticity in the contracted direction and held within the sliding range of the guide cylinder 5, and a shaft rotatably attached to the upper portions of both ends of the horizontal lift bar 4. Supported and each of the above Click 14 meshes with a said guide tube 5 is rack holder 12 with the rise of the horizontal lift bar 4
A pair of pinions 15 that are driven to rotate until they come into contact with each other, and are provided coaxially with each pinion 15, and follow the rotation of the pinions 15 as the horizontal lift bar 4 rises, and the guide cylinder 5 causes the guide cylinder 5 to move. The first folding plates 18 that are in a standing state when the pinion 15 stops rotating by contacting the first folding plates 18 and the first folding plates 18 when the first folding plates 18 are in the horizontal state.
The second folding plate 19 fixed to each vertical lift body 3 so that the upper surface 19a is located at the same plane as the upper surface of 18 and horizontally supports the flat assembly box; When the cylinder 5 comes into contact with the rack holder 12,
A control member 22 for restricting the upward movement of the assembly box by abutting the bottom wall D ₁ of the assembly box in a flat plate state, which is lifted as the vertical lift body 3 is lifted, from above. Each of the first folding plates 18 when the folding plates 18 are in the horizontal state
A notch portion 18b is provided on the upper surface of the groove, and a groove 18c extending continuously to the notch portion 18b is provided on the inner side surface of each first folding plate 18 facing the side wall D ₂ side of the assembly box. 20c is pivotally attached to the inner side surface of each first folding plate 18, and a bulging portion 20b is curvedly extended from the base end 20c along the groove 18c to the inner side surface of the first folding plate 18. And the bulge 2
A swivel strip-shaped ear piece folding auxiliary plate 20 having a flat portion 20a which extends in a flat manner corresponding to the cutout portion 18b in a continuous manner with 0b.
And a coil spring 21 elastically supporting the middle portion of the ear piece folding auxiliary plate 20 in the longitudinal direction in the groove 18c, and the first folding plate 18 stands up and the ear piece folding is performed. After the auxiliary plate 20 folds each ear piece D ₂ ′ at a substantially right angle to the side wall D ₂ , the guide cylinder 5 opposes the coil spring 13 to raise the rack holder 12, and the second folding plate 19 is characterized in that so as to bend the respective ear piece D ₁ 'of the bottom wall D ₁ relative rises and to said bottom wall D ₁ that is regulated in the regulating member 22.

(Operation) In the present invention, the vertical lift body 3 and the horizontal lift bar 4 move up and down together. The vertical movement at this time is guided by the vertical guide shaft 11 via the guide cylinder 5 of the horizontal lift bar 4.

According to the present invention, when the vertical lift body 3 and the horizontal lift bar 4 are in the lowered position, the upper edge of the first folding plate 18 and the upper edge of the second folding plate 19 in the horizontal state provided on the horizontal lift bar 4 are flattened. Support the box body.

Then, the cylinder 1 causes the vertical lift body 3 and the horizontal lift bar 4 to start rising.

At this time, the coil spring 13 maintains the rack holder 12 in a fixed position on the vertical guide shaft 11. As a result, the pinion 15 ascends while rotating while engaging with the rack 14.
By the rotation of the pinion 15, the first folding plate 18 stands up and bends the ear piece D ₂ ′ of the side wall D ₂ . At this time, the ear piece folding auxiliary plate 20 further swings and elastically moves along the ear piece D ₂ ′ of the side wall D ₂ by the elasticity of the coil spring 21, and the ear piece D ₂ ′ is moved to the side wall D _2. Bend at a right angle to ₂ .

Then, the vertical lift body 3 and the horizontal lift bar 4 are further lifted by the cylinder 1. Then, the guide cylinder 5 continues to contact the rack holder 12 to raise the rack holder 12. At this time, the rack 14 ascends together with the pinion 15, so that the rotation of the pinion 15 is stopped and the first folding plate 18 is maintained in the standing state.

After that, the vertical lift body 3 and the horizontal lift bar 4 are further raised by the cylinder 1, and the box body is restricted by the restriction member 22 at a predetermined position. Bent so as to stand at right angles to the second lug D ₁ of the folding plate 19 is raised further bottom wall D ₁ 'relative to the bottom wall D ₁ with respect to the box body of the regulated state.

(Embodiment) Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiment. Although the present invention is composed of a pair of folding devices having the same structure, only the configuration of one folding device will be described for convenience of explanation.

1 is a front view of the folding device, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG.

In the figure, 1 is a cylinder for raising and lowering a vertical lift body 3, which will be described later, and is suspended by a pedestal 2 with its piston rod 1a facing downward. Reference numeral 3 is a strip-shaped vertical lift body whose upper end is pivotally connected to the piston rod 1a of the cylinder 1. Reference numeral 4 denotes a horizontal lift bar horizontally fixed to the lower end portion of the vertical lift body 3 and having a pair of guide cylinders 5, 5 provided at positions equidistant from the center portion and having a guide shaft described later slidably extending longitudinally. In addition, in this embodiment, a long hole 10 of a die plate 10 described later is formed on the outer surface of the lower end portion of the vertical lift body 3.
The spacer 6 slidably fitted in a and the outer surface of the spacer 6 are fixed to each other with a support plate 7 superposed therebetween.

Further, the vertical movement stroke of the vertical lift body 3 is determined by the pair of cam followers 8 and 8 which are fitted into the long holes 10a of the die plate 10 provided on the outer surface of the die plate 10 with the spacer 6 interposed therebetween, and the pedestal 2. It is determined by the length of the vertical elongated hole 10a in the fixed die plate 10 arranged along the outer surface of the vertical lift body 3 through the fixed die frame 9.

Reference numerals 11 and 11 denote a pair of vertical guide shafts fixed in parallel with the vertical lift body 3 with the vertical lift body 3 interposed therebetween, and the upper ends thereof are fixed to the pedestal 2.

Reference numerals 12 and 12 denote rack holders slidably fitted over the pair of vertical guide shafts 11 and 11, respectively, and the guide cylinders 5 and 5 have coil springs 13 and 13 each having one end connected to a mount.
Are held so as to be in a fixed position on the vertical guide shafts 11 and 11 at all times except when they are raised and collide with each other and pushed up. Reference numerals 14 and 14 denote racks provided vertically on the outer surfaces of the rack holders 12 and 12, respectively. 15,15 is the rack 14,14
A pinion that meshes with the shaft of the pinion 15,15
6, 16 are rotatably supported by bearings 17, 17 near both ends of the horizontal lift bar 4.

Reference numerals 18 and 18 denote first folding plates for folding the side wall of the box body and the ear pieces of the box body, which are rotated 90 degrees inward from the horizontal position by the rotation of the pinions 15 and 15 and stand up.
The bases are fixed to the shafts 16 and 16 of 5, respectively. Further, the first folding plates 18, 18 have their respective facing surfaces 18a, 18a made lower at the tip end side thereof in the forward direction.

Furthermore, the first folding plates 18 and 18 are provided so that when the pinions 15 and 15 are engaged with the lower ends of the racks 14 and 14, they are horizontal.

Reference numeral 19 is a second folding plate fixed to the inner surface of the vertical lift body 3 for folding an ear piece on the bottom wall of the box body, and the main body of the first folding plates 18, 18 of the vertical lift body 3 is The facing surfaces 18a, 18a of the first folding plates 18, 18 when in the horizontal state
And the upper surface 19a thereof is fixed to the same plane.

Reference numeral 20 is an ear piece folding auxiliary plate formed by bending a strip plate in a vertical cross section. The ear piece folding auxiliary plate 20 is the first folding plate 1 for folding the side wall of the box body and the ear piece.
The horizontal portion 20a is provided in the notch portion 18b provided on the facing surface 18a of 8,8.
Further, the curved bulging portion 20b is disposed in the groove 18c provided on the inner side surface of the first bent plate 18, 18, and the base end portion 2
0c is pivotally attached to the inner side surfaces of the first folding plates 18 and 18 so as to be slidable inward and outward of the first folding plates 18 and 18, and an intermediate portion in the longitudinal direction is provided in the groove 18c. It is connected to a Colspring 21 which is somewhat weaker than the restoring force of the ear piece D ₂ ′ provided.

Reference numeral 22 is a restriction member that restricts the rise of the box body by a predetermined amount or more, and is fixed to a part of the gantry 2.

An assembling device is constituted by one set of the above-mentioned folding devices, and the first folding plates 18 and 18 and the second folding plate 19 are arranged inside and opposite to each other as shown in FIG. Further, as shown by phantom lines in FIGS. 1 to 3, a plate D constituting the box body is supplied between the folding devices to assemble the box body D.

Next, the operation of the above-described embodying apparatus will be described with reference to the operation explanatory diagrams of FIGS. 4 and 5.

A state in which the intermediate partition plate C is placed on the bottom wall D ₁ of the box body D and supplied and held between the pair of assembling devices is shown in phantom lines in FIGS. 4 (a) and 5 (a). It is in a state of being.

In this state, the first folding plates 18 and 18 are in a horizontal state, and the facing surfaces 18a and 18a thereof are the ear pieces of the side wall D ₂ of the box body D.
Applied to the lower surface of D ₂ ′ and the upper surface 19a of the second folding plate 19.
Is applied to the lower surface of the ear piece D ₁ ′ of the bottom wall D ₁ . As a result, the flat box body D is placed in a state of being supported by the folding plates 18 and 19 at their peripheral portions.

When the cylinder 1 operates in this state and the piston rod 1a retracts, the vertical lift body 3 connected to this
Also rises. FIG. 4B shows a state where the vertical lift body 3 is in the middle of ascending, and in this state, the horizontal lift bar 4
As the pinion 15 rotates, the pinion 15 rotates and ascends along the rack 14, so that the first folding plates 18, 18 fixed to the same shaft 16 as the pinion 15 also gradually rise.

The vertical lift body 3 further rises, the horizontal lift bar 4 also rises, and the rotation of the pinion 15 causes the first folding plates 18 and 18 to stand 90 degrees from the initial state and become vertical.

When this state is reached, the upper end surfaces of the guide cylinders 5, 5 come into contact with the lower surfaces of the rack holders 12, 12. This state is shown in FIG. 4C. In this state, the facing surfaces 18a, 18a of the first folding plates 18, 18 are the ear pieces D of the side wall D ₂ of the box body D. Furthermore extruded ₂ '(FIG. 5 (b), 6 (b)) and finally becomes close to the ear piece to the state where both end portions and the end face of the H-shaped partition plate C is keep company by the portion of its inner
Fold in D ₂ ′.

This completes the folding of the side wall D ₂ and its ear piece D ₂ ′.

Further, the cylinder 1 raises the vertical lift body 3 and the horizontal lift bar 4. The guide cylinders 5, 5 rise as the horizontal lift bar 4 rises, and the rack holder 1
Pushes 2,2 up against the action of coil springs 13,13. In addition, as the vertical lift body 3 rises, the second folding plate 19
Also rises, raising the ear piece D ₁ ′ of the bottom wall D ₁ . The state in the middle of this is shown in FIG. 6 (b), which shows the ear piece of the bottom wall D ₁ .
D ₁ ′ is gradually bent. Further, in this state, since the rack holders 12 and 12 also rise together with the pinions 15 and 15 as described above, the guide pinions 15 and 15 do not rotate, and therefore the folding plates 18 and 18 are in the vertical state. As it rises.

When the vertical lift body 3 further rises and reaches the state of FIG. 4 (d), the ear piece D of the bottom wall D ₁ of the box body D is, as shown in FIG. 5 (c) and FIG. 6 (c). ₁ ', the side wall D ₂ that lugs D _2' in contact with the outer surface of the end portions of the H-shaped partition plate C and is bonded with a coated adhesive (not shown) on its inner surface. This completes the assembly of the box body.

At that time, since the ear piece folding auxiliary plates 20 and 20 are attached to the side walls of the box body and the first folding plates 18 and 18 for folding the ear pieces, respectively, as shown in FIG. Piece D ₂ ′
When folding in, the end surface of the ear piece D ₂ ′ and H of the inner partition plate C
The shape can be brought close to the end faces of both ends of the shape, and this can be done very smoothly when the ear piece D ₁ ′ of the bottom wall is folded. That is, in FIG. 11 (a), the interval (b) between the inner edge of the first folding plate 18 and the base bent portion of the ear piece D ₂ ′ when the ear piece folding auxiliary plate 20 is not attached is equal to the ear piece folding. When the auxiliary plate 20 is attached, the curved bulging portion 20b of the ear piece folding auxiliary plate 20 and the ear piece D
_It is larger than the space (b) between the 2'and the bent part of the base, and therefore, when the folding plate 18 is in the vertical state and the ear piece folding auxiliary plate 20 is not attached, FIG. 11 (b) The ear piece D ₂ ′ can be folded only up to the position indicated by the virtual line in. On the other hand, the ear-folding auxiliary plate is attached to the first folding plate 18.
Since 20 is attached, as shown by the solid line in FIG. 11 (b), it is possible to fold deeply until the end surface of the ear piece D ₂ ′ is close to the state where both end portions of the H shape of the partition plate C are in contact with each other. Further, when the ear piece D ₂ ′ is folded, the coil spring 21 contracts and the curved bulging portion 20b of the ear piece folding auxiliary plate 20 is retracted to the groove 18c side, so that the folding can be performed smoothly.

(Effects of the Invention) As is apparent from the above, according to the present invention, after the first folding plate 18 is erected and each ear piece D ₂ ′ of the side wall D ₂ is bent, the guide cylinder 5 is against the coil spring 13 raises the rack holder 12, each of the bottom wall D ₁ and the second fold plate 19 is relatively increased to relative to said bottom wall D ₁ that is regulated in the regulating member 22 Since the ear piece D ₁ ′ is bent, each ear piece on the side wall D ₂ precedes each ear piece D ₁ ′ on the bottom wall D _1.
The D ₂ ′ can be bent, and the stepless assembly box by the ear piece D ₂ ′ of the side wall D ₂ in the box body can be automatically and rapidly assembled.

Further, although the mechanism is simple, it is possible to provide a low-cost device because the timing of elevating the first folding plate 18 is certain and the number of parts is small.

In addition, according to the present invention, the side wall D _{2 of the} box body and the ear piece thereof are
'First fold plate 18 for folding a, because fitted respectively the lugs folding auxiliary plate 20, the side wall D _2' D ₂ when folded to,
It is possible to fold deeply until the end surface of the ear piece D ₂ ′ and the end surfaces of both ends of the H shape of the partition plate come close to a state where they are in contact with each other, which makes the fold of the ear piece D ₁ ′ of the bottom wall D ₁ smoother Can be done.

[Brief description of drawings]

1 is a front view of the folding device, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIGS. 6 is an explanatory view of the operation mode of the assembly box, FIG. 6 is an explanatory view of the assembly process of the assembly box assembled according to the present invention, and FIG.
FIG. 8 is a perspective view showing a partially cut-away assembly box to be assembled according to the present invention, FIG. 8 is a partially enlarged view of the assembly box with the box body unfolded, and FIG. 9 is a side wall of the box body and ear pieces thereof. 10 is an enlarged view of a part of the folding plate for folding the
FIG. 11 is a sectional view taken along line I, FIG. 11 is an explanatory view of the operation of the folding plate, FIG. 12 is an explanatory view of a conventional assembly box assembling process, and FIG. 13 is a perspective view of the assembly box when the assembly is completed. 1 ... Cylinder, 3 ... Vertical lift body, 4 ... Horizontal lift bar, 5,5 ... Guide tube, 11,11 ... Vertical guide shaft, 12
…… Rack holder, 13,21 …… Coil spring, 14
…… Rack, 15 …… Pinion, 16 …… Pinion shaft, 18
...... 1st folding plate, 18b ...... notch, 18c ... groove, 19 ...... 2nd folding plate, 20 ... ear piece folding auxiliary plate, 20a ... horizontal part, 2
0b: curved bulge, 20c: base end, 22: regulating member, D _1: bottom wall, D _2: side wall.

Claims (1)

[Scope of utility model registration request] 1. An ear piece continuously connected to front and rear edges of a rectangular bottom wall constituting an assembly box via fold lines, and front and rear edges of a pair of side walls standing on the left and right sides of the bottom wall. The first is to fold inwardly the ear pieces that are respectively connected through the crease lines,
A first folding plate including a second folding plate and swingable from a horizontal position to a standing position in a folding direction of each ear piece of the side wall corresponds to each ear piece of the side wall, and front and rear sides of the side wall. A pair of second folding plates provided facing each other on the bottom wall and movable up and down in the folding direction of the ear pieces of the bottom wall face the front and rear sides of the bottom wall corresponding to the ear pieces of the bottom wall. In the automatic assembling apparatus for a pair of assembling boxes, a pair of vertical lifts whose upper end is continuously connected to a piston rod of a cylinder which is vertically fixed and held and which is vertically moved by expansion and contraction of the piston rod. Body, a horizontal lift bar extending in the horizontal direction at the lower end of each vertical lift body, a pair of guide tubes equidistant from the center of each horizontal lift bar, and fixed upright. Horizontal lift bar with a vertically slidable cylinder And a pair of vertical guide shafts for guiding the vertical lift body in the ascending / descending direction, and a rack slidably provided along each vertical guide shaft and extending perpendicularly to the outer surface, and suspended from the upper end of each vertical guide shaft. A pair of rack holders connected to a coil spring having elasticity in a contracting direction and held in a sliding range of the guide cylinder, and rotatably supported by upper portions of both ends of the horizontal lift bar. A pair of pinions that mesh with the racks and are driven to rotate until the guide cylinder contacts the rack holder as the horizontal lift bar rises; And the first folding plate that is in an upright state when the guide cylinder contacts the rack holder and the rotation of the pinion stops following the rotation of the pinion, and each first folding plate. When in the horizontal state, the upper surface is located at a position flush with the upper surface of each of the first folding plates and is fixed to each vertical lift body so as to horizontally support the flat assembly box. When the second folding plate and the guide cylinder come into contact with the rack holder, the second folding plate comes into contact with the bottom wall of the assembly box in a flat plate state, which has been raised as the vertical lift body is raised, from above to raise the assembly box. A restriction member for restricting movement, and a notch is provided on a surface that is an upper side of each first folding plate when each first folding plate is in a horizontal state, and faces a side wall side of the assembly box. A groove extending continuously from the cutout portion is provided on the inner side surface of each first folding plate, and a base end portion is pivotally attached to the inner side surface of each first folding plate, and a first folding along the groove from the base end portion. A bulging portion that curves and extends so as to bulge to the inner surface of the plate, and the cutout portion is continuous with the bulging portion. An oscillating band-shaped ear piece folding auxiliary plate having a flat portion correspondingly extending flat is provided, and a middle portion in the longitudinal direction of the ear piece folding auxiliary plate is elastically supported in the groove. After the first folding plate is erected and the ear piece folding auxiliary plate folds each ear piece at a substantially right angle to the side wall, the guide cylinder opposes the coil spring to move the rack holder. The second folding plate is raised, and the second folding plate is relatively raised with respect to the bottom wall regulated by the regulation member to bend each ear piece of the bottom wall. apparatus.