JPH0314686B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a packaging device that wraps a large number of laminated sheets of paper or other rectangular parallelepiped packaging objects in wrapping paper, and folds and overlaps the protruding paper pieces of the wrapping paper. In particular, the present invention relates to an improvement in folding means in the packaging device.

(Prior art) The present inventor has disclosed the patent application No. 188220/1988
(filed on May 11), we proposed a packaging device that automatically wraps rectangular parallelepiped items. This packaging device is
Wrapping paper and items to be packaged are stacked heavily on a table that can be raised and lowered, and as the table lowers, the front and back of the wrapping paper is raised up, and the fingers are moved forward to automatically fold the protruding paper pieces of the wrapping paper. The gist of this is that This packaging device had the notable advantages of a compact structure and the ability to be easily mass-produced by one worker, and subsequently became widely popular.

(Problem to be Solved by the Invention) However, in the above device, when the fingers move forward, the folded paper pieces, which are formed by folding the front and rear upstanding pieces of the wrapping paper and protrude horizontally on both sides, are folded back and forth. Due to the action of the finger plate that reciprocates and the forward movement of the packaged items, the upper folded paper pieces are folded one on top of the other so that the upper pieces are on the inside and the lower pieces are on the outside, so the lower folded paper pieces are in a free state without being constrained. There were problems in that the tip part of the folding paper was wrinkled and it was difficult to form a clean folding line, and improvements in this respect were desired.

The present invention has been made in view of the above, and the object thereof is to fold the folded paper pieces with almost horizontal protrusions on both sides formed after folding the upright paper pieces on the front and rear sides of the wrapping paper so that the upper side is on the inside. In addition, fold the folded paper piece so that the lower side is on the outside, and then wrap the tip of the folded paper piece with the lower part protruding upwards, which protrudes above the top surface of the packaged item, under the fold line neatly without wrinkles. A novel packaging device that can be folded onto the top of an object is provided.

(Means and Embodiments for Solving Problems) The structure of the present invention for achieving the above object will be explained based on the attached embodiment diagrams. FIG. 1 is a longitudinal sectional view showing one embodiment of the packaging device of the present invention, FIG. 2a is a perspective view of the folding means of the device, FIGS. 2b and 2c are perspective views showing the folding state, 3 and 4 are schematic diagrams showing the operating state of the device.

The packaging device of the present invention moves the front and rear sides of the wrapping paper B on which the rectangular parallelepiped-shaped object A is placed while following a horizontal packaging work path from at least the rear to the front. Paper piece standing means 3, 41,
53 and 54 to form a front side upright piece B ₂ and a rear side upright piece B ₁ along the front and rear sides of the packaged object A, respectively, and then fold these upright pieces B ₁ and B ₂ into the folding means 4. _{. _}
The protruding length of B ₄ is larger than the height of the packaged object A, and these folded paper pieces B ₃ ,
A folding plate 60 that moves B ₄ up and down on both left and right sides of the packaged object A by the first and second folding means 7 and 6.
Then fold the upper piece of paper B ₃ inside so that the lower piece of paper B ₄ stands up along both sides and projects above the upper surface of the packaged item A, and the portion of the erected piece of paper B ₄ that protrudes above the upper surface In the packaging device, the third folding means 8 is configured to stand up and be spaced apart from each other in accordance with the width of the packaged article A. A pair of left and right rocking plates 84, 84 whose lower ends are pivotally supported on the path so as to swing between a vertically standing state and a tilted state in which the upper portions are tilted outward on the left and right sides, and the rocking plates 8.
rocking guide means 81, 81, 88 for swinging the folding plate 60 between the two states to tilt the folding plate 60 when it moves downward and to stand it up when it moves upward; It is characterized in that it is composed of protruding pieces 86, 86 that are respectively protruded in a perpendicular state corresponding to the height of the upper surface of A.

To describe the general working parts of the machine stand F of this packaging device, the latter half is the part where the object to be packaged A is sent out and the wrapping paper B is laminated and fed out, and the central part is the part where the object to be packaged A and the wrapping paper B are piled up. The folding part, the first half, is the part where wrapping paper B is folded and sealed with adhesive tape. In addition, the lower half of the machine F is equipped with a driving means 9 for performing the feeding operation of the feeding device 1 for feeding the wrapping paper B, the vertical movement of the table 3, and the back and forth reciprocation of the finger member 4. ing.

As shown in FIG. 1, a feed-out stand 15 for sending out the article to be packaged A is provided on the upper surface of the rear half of the machine stand F, and a stacking and feeding device 1 for wrapping paper B is disposed below the feed-out stand 15. The stacking and dispensing device 1 includes a stacking table 11 that laminates a large number of wrapping papers B, and a dispensing member 12 that dispenses the stacked wrapping papers B one by one from the top. It consists of a delivery roll 13 to be sent upward, and these stacking table 11, delivery member 12, and delivery roll 1
Reference numeral 3 denotes a support frame 10 disposed at the lower part of the feed table 15 on the side frame of the machine stand F so as to be slidable back and forth.
Erection equipment is provided.

The lifting table 3 includes a finger plate 41,
Two vertical slide rods 31, 31, which together with the vertical fixing plate 53 and the holding plate 54 form the paper piece raising means, are held so as to be vertically slidable with respect to the intermediate machine stand _F0 .
The block 32 is supported by the slide rods 3, 3, and is fixed to the lower ends of the slide rods 3, 3.
When it caught wrapping paper B during its rise and reached top dead center,
Furthermore, the time program is set so that the object to be packaged A is stacked and lowered, and the finger means 4 stops at the bottom dead center while reciprocating back and forth.

The reciprocating finger means 4 constitutes a folding means together with the fixed finger means 5, and also has a pair of side plates fixed to the reciprocating support plates 93, 93 on both sides of the machine base F, and a pair of side plates fixed to the rear between these side plates. A push plate 42, upper finger pieces 43, 43 and lower finger pieces 44, 44, which are vertically opposed to each other horizontally at both ends of the press plate, and on both upper finger pieces 43, 43. It is composed of a horizontal finger plate 41 which is detachably attached, and is driven reciprocally in conjunction with the elevating table 3 by a driving means 9, as will be described later.

The fixed finger means 5 enters between the upper and lower finger pieces 43 and 44 in opposing relation to the reciprocating finger means 4 on the wrapping paper folding/discharging table 52 near the forward movement end position of the reciprocating finger means 4. It is arranged like this.

Further, directly above the rear end of the wrapping paper folding/discharging table 52, there is a vertical fixing plate 53 horizontally suspended in the width direction of the machine table F.
, restraining plates 54 that can freely tilt forward and backward are arranged close to each other in the front and back, and the restraining plates 54 normally stand up due to the restoring elasticity of a compression spring (not shown), and when the finger means 4 moves back, the operating rod ( The upper end thereof is tilted forward in response to a pressing force which resists the elasticity of the compression spring through a spring (not shown).

The first folding means 7 includes a rear folding member 70, 70 having an upper side 71 inclined forward and upward so as to fold up the lower folding paper piece _B4 protruding from both sides into a half-open state, and the folding member 70. , 70 and which folds the half-open folded paper piece _B4 upward together with the upper folded paper piece _B3 .
5, 75, and a full folding member 76 having an upper side 761 that gently slopes from the rear folding members 70, 70 toward the terminal end of the discharge table 52,
On the other hand, the second folding means 6 includes the folding members 70, 7.
The upper folded paper pieces B ₃ of the wrapping paper are suspended above the wrapping paper by support means 65 via the guide means 64 behind them so as to be vertically movable, and are folded between the half-opened lower folded paper pieces B ₄ . It is composed of convex folding plates 60, 60.

The vertical movement means 63 of the folding plates 60, 60 supports the drive rod 63a inserted into the hole 62a of the protrusion 62 on the front side of the folding plates, and both ends of the drive rod 63a, and moves forward. A pair of forward and downward moving cams 63b are moved upward by moving upward (indicated by arrow FW) and downward by moving backward (indicated by arrow BW), and the moving cams 63b are urged forward. Spring 63c and reciprocating support 9
3 and 93 are engaged when the moving cams 63 and 93 move backward, and move the moving cam 63b backward.

Bottom folded paper piece B ₄ folded upward in an upright manner,
The third folding means 8 for folding B ₄ into the upper surface of the object to be packaged A includes, in addition to the above, a spring 88 that biases the swing plates 84, 84 inward to bring them into an upright state. The swing plate 84 is mounted on the folding/discharging table 52 by a longitudinally movable hinge 85 so as to be swingable between an upright state and an outwardly tilted state. A roller 82 as a cam follower constituting the guide means 81 is attached to the bracket 8 on the outside of the upwardly protruding protrusion at the rear end of the swing plate 84.
It is attached by 4a. Further, in the middle part of the swing plate 84, there are two rows of parallel elongated holes 84 in the vertical direction.
b, 84b are bored, and each protruding piece 86 is attached to the rocking plate 84 by its planting bolts 86a, 86a.
It is fixed to the inside of the housing along these elongated holes 84b, 84b so as to be vertically adjustable. The guide means 81 is
The roller 82 and the protrusion 62 of the folding plate 60
It consists of a cam plate 83 that hangs down so as to be bent diagonally outward. The cam plate 83 regulates the roller 82 by its vertical movement and causes the rocking plate 84 to swing left and right, and the degree of warping is as follows:
The inner edge of the protruding piece 86 is designed to swing outward so as not to hit the moving lower folded paper piece _B4 . Further, the upper end of the cam plate 83 is vertical, and when the roller 82 reaches the upper end, the swing plate 84 is erected.

In addition to the above configuration, the spring 88 can be omitted by providing a groove-shaped cam that forcibly swings the roller 82 both inside and outside.

The device for pasting the short pieces of sealing tape t in this packaging device uses the reciprocating finger means 4 and the fixed finger means 5 to move the protruding paper pieces B ₁ and B ₂ [see Fig. 2 b] of the wrapping paper B folded back and forth from side to side. a position P ₁ that can be sealed; the first and second folding means 6;
The folded paper pieces B ₃ and B ₄ [see Fig. 2 c] folded on the upper surfaces of the protruding paper pieces B ₁ and B ₂ by 7 are arranged at two left and right positions P ₂ where they can be sealed in the front and back direction. .

The driving means 9 includes a motor 90, a crank 91 fixed to the rotating shaft of the motor 90, and a connecting rod 92 connected to the crank 91. The driving means 9 is pivotally connected to the tip of the connecting rod 92, and supports the finger means 4 at the upper end thereof. A pair of left and right support plates 93, 93, and a pair of left and right slide rods 941, 94 connected to the lower ends of the support plates 93, 93.
1, and a horizontal cam surface 951 and a horizontal cam surface 9 on the upper surface fixed to the slide block 94.
A plate cam 95 is provided with an inclined cam surface 952 that is continuously inclined upward in front of the lift table 51, and a front end is pivotally connected to the lower surface of the intermediate base _F0 via a support piece 961, and a rear end is attached to the lift table 3. Long hole 9 in block 32
62, and the horizontal cam surface 951 and the inclined cam surface 95 of the plate cam 95 are locked on the way.
2 and a crank 96 equipped with a roller 963 that rolls on the crank 96.

(Function) The procedure for packaging an object using the packaging device having the above configuration will be briefly described.

First, the article to be packaged A is placed on the delivery table 15, and a large number of wrapping papers B are stacked on the stacking and feeding device 1. Switch on motor 90 and crank 91
Rotate in the direction of arrow S. With the rotation of this crank 91, the support plate 9 receives the action of the connecting rod 92.
3 and 93 retreat, and accordingly, the roller 963 rolls on the cam surfaces 951 and 952 of the plate cam 95, and when the roller 963 starts rolling on the inclined cam surface 952 along the inclination, the crank 96 swings upward using its front end pivot point as a fulcrum, and in response to this swinging action, the block 32 and slide rods 31, 3
1 slides upward, and the elevating table 3 starts to rise. At the same time, the delivery roll 13 operates, and the front end of the wrapping paper B, which has been slightly fed out by the delivery member 12, is clamped, and its rotational force quickly sends the wrapping paper B onto the rising table 3 [see Figure 3 A]. ].
In this case, by adjusting the longitudinal position of the stacking and feeding device 1, the longitudinal position of the delivery roll 13 can be adjusted in advance according to the size of the wrapping paper B. When sending the wrapping paper B to the vertical fixing plate 53 and the restraining plate 5,
4, one rear side is properly inserted and placed on the finger means 4, respectively.

When the table 3 reaches the top dead center, the article A on the delivery table 15 is manually delivered onto the table 3 and stacked on the wrapping paper B (see FIG. 3B). At this top dead center, it is desirable to keep the table 3 stationary for a while, so when the support plate 93 reaches the end position of the backward movement, the limit switch is pressed to automatically stop the rotation of the motor 90, although it is not shown in the figure. It is made to do so.

When the motor 90 is turned on again after confirming that the wrapping paper B and the article to be packaged A have been correctly placed on the table 3 as described above, the roller 963 rotates as the crank 91 rotates, causing the plate cam 95 to tilt. The sliding table 3 rapidly descends along the cam surface 952. At the same time, the forward movement of the support plates 93, 93 is started, and by this forward movement of the support plates 93, 93, only one piece of wrapping paper B is fed out. When the roller 963 starts rolling on the horizontal cam surface 951 and the table 3 reaches the bottom dead center, the table 3 remains still.
In addition, the restraining plate 54 stands up and clamps the front end of the wrapping paper B with the fixing plate 53, and the finger means 4 passes over the table 3 (see FIG. 3C). The time program for the downward and stationary movement of the table 3 and the reciprocating movement of the finger means 4 is determined by the plate cam 9.
5, the vertical stroke width of the table 3, and the position of the forward movement start point of the finger means 4. When the table 3 is lowered, the front side of the wrapping paper B is connected to the deterrent plate 54 and the fixing plate 5.
The rear side is held up by the horizontal finger pieces ₄₁ of the finger means 4, and these upright pieces B ₁ and B ₂ stand up by the horizontal finger pieces 41 _of the finger means 4. The wrapping paper B is pulled back and forth in response to the clamping resistance between the plate 54 and the fixed plate 53, so that so-called trunk holding is performed, and the wrapping paper B holds the packaged item A without loosening.
It is folded faithfully to its shape.

When the finger means 4 hits the packaged item A from above the wrapping paper B and starts to push it out, the horizontal finger plate 4 and the top plate 51 fold the upright pieces B ₁ and B ₂ back and forth. , its left and right sides are upper and lower finger pieces 43, 43.
and is folded into the side of the packaged object A by the fixing finger means 5.

Further, the reciprocating finger means 4 moves the object A to be packaged.
As the folded paper pieces B ₄ and B ₄ on the lower side are pushed out between the top plate 51 and the folding/discharging table 52, as shown in FIG. The upper folded paper pieces B ₃ , B ₃ are folded upward into a half-open state by the downward movement of the folding plates 60 , 60 to form a clean fold line inside the half-open folded paper pieces B ₄ , B ₄ . folded down below. At this time, the tape short piece t is adhered to the overlapped portion of the protruding paper pieces B ₁ and B ₂ of the front and rear wrapping paper by the sealing tape applying device 2a. As they are successively extruded, the half-opened folded paper pieces B ₄ , B ₄ are moved to the intermediate folding members 75 , 7 .
5 and all the folding members 76, 76 are completely folded into both sides of the packaged article A while forming a clean folding line on the lower side thereof, and their tip portions protrude from the upper surface thereof. These lower folded paper pieces B ₄ , B ₄
The projecting pieces 86, 86 of the next folding means 8 swing inward from the outwardly tilted position to the upright position, so that the packaged article A is folded tightly against the side and top surface. Then, the sealing tape application device 2b adheres the short tape pieces t in the front and back direction, and the entire packaging work is completed. The folding by the third folding means 8, 8 is performed in synchronization with the downward movement of the folding plates 60, 60 in the previous step, and the cam plate 8 is moved upward during the upward movement.
3 through the rollers 82 to the swing plates 84, 84.
Then, the protruding pieces 86, 86 are tilted outward against the elasticity of the compression spring 88, so that the folded paper pieces _B3 , _B4 receive the packaged article A in the upwardly half-opened state.

(Effects of the Invention) As described above, according to the packaging device of the present invention, by folding the sides of the wrapping paper B by the reciprocating finger means 4 and the fixed finger means 5, the wrapping paper B can be protruded laterally almost horizontally. Upper folded paper piece formed
B ₃ , B ₃ and the lower folded paper pieces B ₄ , B ₄ are folded into the packaged object by the vertical movement of the folding plates 60 , 60 of the second folding means 6 and the action of the first folding means 7 . Folded to the side of A. In this folded state, the upper folded paper piece B ₃ is facing downward inside the lower folded paper piece B ₄ and the lower folded paper piece B ₄
are folded upward in an upright manner, and these lower folded paper pieces B ₄ , B ₄ , including their protruding tips, are oscillating plates that oscillate in conjunction with the vertical movement of the folding plates 60 , 60 . Projecting pieces 86, 8 provided inside of 84, 84
6, the packaged item A is tightly folded onto the side and top surface of the packaged item A under a clean folding line without creating wrinkles. The first to third folding means 7, 6, and 8 ensure a clean finish without wrinkles or looseness, and also allow automatic continuous packaging work to continue smoothly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the packaging device of the present invention, FIG. 2a is a perspective view of the folding means of the device, FIGS. 2b and 2c are perspective views showing the folding state, 3 and 4 are schematic diagrams showing the operating state of the device. Explanation of symbols, 1... Lamination feeding device, 3... Lifting table, 4... Folding means (reciprocating finger means),
5...Folding means (fixed finger means), 6, 7
...Second and first folding means, 3, 41, 53, 54
...Paper piece standing means, 8...Third folding means, 81, 8
8... Guide means, 84... Rocking plate, 86... Projection piece, A
...Item to be packaged, B ₁ , B ₂ ... Standing paper piece, B ₃ ... Upper folded paper piece, B ₄ ... Lower folded paper piece.

Claims (1)

[Claims] 1 While following a horizontal packaging work route from at least the rear to the front, the packaged object A in the shape of a rectangular parallelepiped is
The front side and the rear side of _the wrapping paper B, which has _a It is formed along the front and rear sides of the packaged item A, and then these upright pieces B ₁ and B ₂ are folded and folded over the top surface and both left and right sides of the packaged item A using 4 and 5 to project horizontally from side to side. upper and lower folded paper pieces B ₃ ,
B ₄ is formed in such a manner that the protruding length of the lower folded paper piece B ₄ is larger than the height of the article to be packaged A, and further these folded paper pieces B ₃ and B ₄ are transferred to the first and second folding means 7 and 6. By means of the folding plate 60 which moves up and down on both the right and left sides of the item A, the lower piece of paper B ₄ stands up along both sides with the upper piece of paper B ₃ inside, and is raised above the top surface of the item A. Fold it in so that it sticks out,
In a packaging device that folds the upwardly projecting portion of the upper surface of the upright piece of paper B ₄ onto the upper surface of the object to be packaged A by the third folding means 8, the third folding means 8 A pair of left and right swingers pivoted at their lower ends on the above-mentioned path so as to swing between a vertical standing state in which they are erected and spaced apart corresponding to the width of Board 8
4, 84, swinging guide means 81, 81, 88 which swings the swinging plate 84 between the two states to tilt it when the folding plate 60 moves downward and to stand it up when it moves upward; Protruding pieces 8 are respectively protruded orthogonally to the inside of 84 and 84 in accordance with the height of the upper surface of the object to be packaged A.
A packaging device comprising: 6, 86.