JPH0314685B2 - - 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 published Japanese Patent Publication No. 57-40006
(filed on May 19), 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, the front and back of the wrapping paper are raised as the table is lowered, and the fingers are moved forward to automatically fold the protruding pieces of the wrapping paper. The main points are as follows. 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 upright pieces at the front and back of the wrapping paper are folded onto the top surface of the packaged object, and are formed so as to protrude horizontally from both sides. Since the folded paper pieces are folded onto the side surfaces of the packaged items when the packaged items are moved forward by means of folding tools having a pair of inclined sides provided on both sides of the packaged items during movement, Folding of the upper side edges, where no weight is applied, causes wrinkles and makes it difficult to form a clean folding line.Therefore, it has been desired to improve this problem.

The present invention has been made in view of the above, and an object of the present invention is to provide a folded paper with substantially horizontal protrusions on both sides formed after folding upright paper pieces at the front and back of the wrapping paper, without causing damage to the packaged items. A new packaging device is provided that can fold the upper part of the folded paper piece onto the side of the packaged item under a neat folding line without creating wrinkles, and then fold the lower folded paper piece on top of it so as to overlap it. This is what we provide.

(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, 3a and 3b are explanatory diagrams showing the sealing tape applying means, and FIGS. 4 and 5 are schematic diagrams showing the operating state of the device.

The packaging device of the present invention takes a horizontal packaging work path at least from the rear to the front, and the wrapping paper B on which the rectangular parallelepiped-shaped object to be packaged A is placed is placed on the front and rear sides. The 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 the packaged object A and the wrapping paper B in this state are The finger means 4, which is horizontally reciprocated back and forth from the rear part to the front part, pushes the finger towards the fixed finger means 5 at the forward end position of the means 4 and passes through it. Fold the upright pieces B ₁ and B ₂ onto the top surface and both left and right side surfaces of the packaged item A to form upper and lower folded paper pieces B ₃ and B ₄ that project horizontally to the left and right, and fix them in the above-mentioned path. The folded paper pieces B ₃ , B 4 are folded by upper and lower folding means 6 and 7 provided in front of the finger _{means 5} .
In the packaging device, the upper folding means 6 includes a pair of rectangular folding plates 60 vertically spaced from each other corresponding to the width of the packaged item A. , 60, and the reciprocating drive source member 93 that drives the finger means 4, and when the finger means 4 moves forward, the folding plate 60 is moved above the height of the packaged object A, and when the finger means 4 moves back, the folding plate 60 is moved upward. Moving cams 63b, 63b that allow downward movement by their own weight
and guide means 64, 64 that slidingly engages with the folding plate 60 to guide the vertical vertical movement of the plate 60, and the lower folding means 7 has a width corresponding to the width of the article A to be packaged. The lower folding members 70, 70 are arranged vertically on the above-mentioned path so as to approach the outside of the folding plate 60 and are spaced from each other on the left and right sides, and have upper sides 71, 71 that are inclined forward and upward. It is something to do.

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 descends backwards to stack a large number of wrapping papers B, a dispensing member 12 that dispenses the stacked wrapping papers B one by one from the top, and a table for dispensing the dispensing wrapping papers B. 3, the stacking table 11, the feeding member 12, and the feeding roll 1.
Reference numeral 3 denotes a support frame 10 disposed at the lower part of the feed table 15 on the end frame of the machine base F so as to be slidable back and forth.
Erection equipment is provided.

The lifting table 3 has a horizontal finger plate 4
1. Two vertical slide rods 31 and 3, which together with the vertical fixing plate 53 and the restraining plate 54 form a paper piece raising means, are also held vertically slidably with respect to the intermediate base _F0 .
The block 32 is supported by the slide rods 31, 31, and fixed jointly to the lower ends of the slide rods 31, 31. The block 32 receives the driving force of the drive means 9, which will be described later, to drive the block 32 vertically and reciprocally, and receives the wrapping paper B while rising. When it reaches the top dead center, the package A is further stacked and lowered, and the time program is set so that the finger means 4 stops at the bottom dead center while reciprocating back and forth.

The reciprocating finger means 4 includes a reciprocating support plate 9
3, 93, a pair of side plates fixed on both sides of the machine base F, a push plate 42 fixed at the rear between these side plates, and upper parts provided horizontally and vertically opposite each other at both ends of the push plate. It is composed of finger pieces 43, 43, lower finger pieces 44, 44, and a horizontal finger plate 41 detachably attached over both upper finger pieces 43, 43, as described below. It is interlocked with the elevating table 3 and driven back and forth by a driving means 9.

The fixed finger means 5 is inserted 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 located in

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 folding means 6 and 7 include folding members 70 and 70 that protrude almost horizontally from both sides and fold the lower folded paper piece B ₄ upward into a half-open state, and are each suspended above the folding members so as to be vertically movable. Folding plates 60, 60 are folded between the upper folded paper pieces _B4 that protrude almost horizontally from the sides of the wrapping paper, and the lower half-opened lower folded paper pieces _B3 are adjacent to the front of the folding members 70, 70. and a second folding member 75, which completely folds the folded paper piece _B3 onto the upper folded paper piece B3 that is folded between the folded paper pieces. The first folding members 70, 70 are made of a substantially trapezoidal plate having an upper side 71 inclined forward and upward at a relatively small angle and a horizontal upper side 72 at the top, and bent so as to open slightly upward from each other. It is formed. The folding plates 60, 60 have a substantially convex shape, and are provided with a guide means 64 for vertical linear movement such as a linear way behind an upwardly protruding portion 61 at the center. It is suspended and guided at a position above 70 by support means 65. The support means 65 has a pair of guide rods 66, 66 horizontally suspended in parallel between both sides of the machine base F, and slides movably along the guide rods, and has an engaging body of the guide means 64 inside. 68 are attached to the supports 67, 67.

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
Engagement protrusions 63d, 6 that engage after the cams 3 and 93 move back a predetermined distance to move the moving cam 63b backward.
3e.

The second folding pieces 75, 75 have their rear parts half-opened to each other in order to smoothly take over the lower folded paper piece _B4 which is still half-opened upward, and also carry the half-opened folded paper piece _B4 . It is formed from a roughly trapezoidal plate inclined at a large angle forward and upward in order to be completely folded onto the already folded upper folded paper piece _B3 . Adjacent to the front of the second folding members 75, 75 is a folding member 8 that folds the folding paper pieces B ₄ , B ₄ projecting upward therein to the inside of the upper surface.

The sealing tape application device in this packaging device includes a reciprocating finger means 4 and a fixed finger means 5.
The protruding piece of paper B ₁ of the wrapping paper B folded back and forth by
B ₂ [See Figure 2 b] Position P ₁ where it can be sealed on the left and right
Then, the paper pieces B ₁ and B ₂ protrude by the folding means 6 and 7.
There are two positions P ₂ on the left and right where the folded paper pieces B ₃ and B ₄ [see Figure 2 c] folded on the top surface of the paper can be sealed in the front and back direction.
It is located at

The pressing roll 20 in the sealing tape applicator 2a at the position _P1 is pivoted to the lower end of a lower support rod 21 that is inclined from side to side, and as the support rod 21 itself swings from side to side, the pressing roll 20 is attached to the tape short piece. It is attached by rolling the top surface of the t. The means for swinging the lower support rod 21 from side to side includes an upper support rod 22 whose lower end is connected to the upper end of the lower support rod 21 by a pin and whose upper end is connected to the frame f by a pin, the upper support rod 22, and the upper An operating rod 2 protruding at right angles from the middle part of the support rod 22, having a guide pin 23a protruding from the middle part and an operating pin 23b protruding from the tip part.
3, and a guide rod 2 which is connected with a pin at its lower end near the lower end of the lower support rod 21 and is slidably engaged with the guide pin 23a in a long hole 24a in the longitudinal direction of the intermediate portion.
It is composed of 4. The actuating pin 23b is slidably engaged with the drive rod 63a constituting the vertical movement means 63 of the folding plate 60 along the longitudinal direction by the weight of the swinging means. 6
Follows the vertical movement of 3a. The operating pin 23b follows the vertical movement of the drive rod 63a. When the operating pin 23b moves downward from the top dead center as the drive rod 63a moves up and down, the upper support rod 22 and the operating rod 23 swing around the fulcrum of the frame f, and the lower end of the lower support rod 21 swings. The pressing roll 20 also swings and rolls on the tape short piece t. While the pressing roll 20 is rolling on the tape strip t, the lower movement of the operating rod 23 is caused by the guide rod 2.
is absorbed through the guide pin 23a in the elongated hole 24a of 4, causing the pressing roll 20 to roll left and right,
Attach the short piece of tape t. As the operating pin 23b moves upward, the roll 2 presses the tape short piece t again.
0, roll it, and return it. When the pressing roll 20 is not involved in pasting, the pressing roll 2
The position of the upper end of the elongated hole 24a of the guide rod 24 is determined so that the guide rod 24 will float above the surface to which it is attached.

The tape supply block 200 includes a support shaft 201 that rotatably supports the sealing tape winding roll T;
A tape feed roll 202, a cutter 203,
A water application roll 204 is supported and arranged at a predetermined position by a frame f.

The tape feed roll 202 is driven by a drive motor 221
The tape from the winding roll T is held between the receiving member 223 and the receiving member 223 disposed at the lower part thereof and urged upward by a compression spring 222, and sent to the next cutter 203. It functions as expected.

The cutter 203 consists of a fixed blade 231 and a movable blade 232 that moves up and down. The movable blade 232 is normally held in an upwardly pulled state by a compression spring 233.
When an electric signal is input to the tape, it rapidly descends along the frame 230, and cuts the tape to an appropriate size by shearing action with the fixed blade 231. Fixed blade 23
1 is fixed to the frame 230 in a forward biased state by a compression spring 235, and is designed to provide sharp shearing properties with the movable blade 232.

The water roll 204 is rotatably held with its lower part immersed in a water tank 241, and holds the unrolled tape strip t between it and a pressure roll 242 held in contact with it. It is rotated by the propulsion force to lift up the water in the water tank 241 and attach it to the back surface (applying surface) of the tape strip t. This water roll 204 is made up of a cylinder 243 that is replaceably fitted onto a support shaft 240.The cylinder 243 is made of a soft elastic foam resin having a large number of fine open cells, and is made of a soft elastic foam resin that is made of a soft elastic foam resin having a large number of fine open cells. The material was selected so that when the tape is immersed in the water tank 241, it quickly becomes wet, and when it is separated from the water tank 241, it is quickly dehydrated, and an appropriate amount of water is transferred to the tape strip t.

The frame f is supported by a machine stand F of the packaging device as a supporting guide rod 66 for the folding plate 60.
The book is held slidably in the left and right or front and rear directions by horizontal slides 66, 66, and is held in a vertically movable manner by a jacking means 206.
It is possible to adjust the three-dimensional position according to the size of the item A to be packaged.

In the case of the sealing tape applicator 2b at the above position _P2 , as shown in FIG. 3b, the upper and lower support rods 2
5 and 26 includes a crank 212 rotated by the driving force of a drive motor 211 as shown in the figure, and a long hole 25a opened along the longitudinal direction whose upper end is pivotally connected to the frame f. The upper support rod 26 is pivotally connected to the lower end of the support rod 25, and a pin 213 fixed to the tip of the crank 212 is inserted into the elongated hole 25a along its longitudinal direction. By slidably fitting the lower support rod 25, the crank 212 is rotated to cause the lower support rod 25 to swing back and forth. The frame f also supports and pivotally holds the motor 211 and the upper support rod 25 when the pressing roll 20 is swung back and forth by the motor 211 and the upper support rod 25 as described above. The roll 214 pivotally supported by the frame f is
When the pressing roll 20 is not involved in pasting, the lower support rod 26 is supported in an inclined state so that the pressing roll 20 is lifted from the surface to be pasted. The tape supply block 200 has the same configuration as that at position _P1 above.

The drive means 9 includes a motor 90, a crank 91 fixed to the rotating shaft of the motor 90, a pair of left and right support plates 93 which are pivotally connected to the tip of the crank 91 and support the finger means 4 at the upper end. 93
, a slide block 94 that connects the lower ends of the support plates 93 and 93 and is held slidably back and forth by a pair of left and right slide rods 941, 941, and a horizontal cam that is fixed to the slide block 94 and has a horizontal cam on the upper surface. Face 9
51 and a plate cam 95 having an inclined cam surface 952 that is continuously inclined upward in front of the horizontal cam surface 951, and a support piece 9 whose front end is on the lower surface of the intermediate base _F0 .
61, and the rear end is connected to the elevating table 3.
The horizontal cam surface 9 of the plate cam 95 is engaged with the block 32 through the elongated hole 962, and the horizontal cam surface 9 of the plate cam 95
51 and the roller 9 rolling on the inclined cam surface 952
63 and a crank 96.

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

First, the article to be packaged A is placed on the delivery table 2, and a large number of wrapping papers B are stacked on the stacking and feeding device 1.
Switch on the motor 90 and rotate the crank 91 in the direction of arrow S. As the crank 91 rotates, the support plates 93 and 9 are operated by the connecting rod 92.
3 retreats, and as a result, the cam surface 95 of the plate cam 95
1,952, 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, In response to this swinging motion, the block 32 and slide rods 31, 31 slide upward, and the elevating table 3 begins to rise. At the same time, the delivery roll 13 operates, and the delivery member 1
2 pinches the front end of the wrapping paper B which has been slightly let out, and the wrapping paper B is quickly sent onto the rising table 3 by its rotational force (see FIG. 4A). 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 to
The front side of the wrapping paper B is properly inserted and placed between the vertical fixing plate 53 and the restraining plate 54, while the 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 2 is manually delivered onto the table 3 and stacked on the wrapping paper B (see FIG. 4B). At this top dead center, it is desirable to keep the table 3 stationary for a while. Therefore, 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.

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, turn on the motor 90 again, and the crank 91
As the table 3 rotates, the roller 963 slides down along the inclined cam surface 952 of the plate cam 95, and the table 3 rapidly descends. At the same time, the support plates 93, 93 start to move forward, and due to the forward movement of the support plates 93, 93, only one sheet of wrapping paper B is paid out.The roller 963 starts rolling on the horizontal cam surface 951, and the table 3 is lowered. When the dead center is reached, 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. 4C). 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 article A from above the wrapping paper B and starts to push it out, these upright pieces B ₁ and B ₂ are folded back and forth by the horizontal finger plate 41 and the top plate 51, and Its left and right sides are upper and lower finger pieces 43, 44.
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 . can be 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 pushed out, the half-opened folded paper pieces B ₄ , B ₄ are folded into the front folding members 75 , 7 .
5 are completely folded into both sides of the packaged object A, and their upper ends protrude from the upper surface thereof. The upper ends of these folded paper pieces B ₄ , B ₄ are folded onto the upper surface by the sides 81 , 81 of the folding member 8 , and are adhered in the front-rear direction with the short tape pieces t by the sealing tape pasting device 2 b . packaging work is completed.

(Effects of the Invention) As described above, according to the packaging apparatus of the present invention, the wrapping paper B can be folded almost horizontally to the side formed by folding the sides of the wrapping paper B by the reciprocating finger means 4 and the fixed finger means 5. protruding upper folded paper strip
B ₃ , B ₃ are folded by the downward movement of the folding plates 60 , 60 using the weight of the folding means 6, and the lower folded paper pieces B ₄ , B ₄ which also protrude sideways almost horizontally are folded. Due to the upwardly inclined upper side 71 of the means 7, during the forward movement, the packaged items can be folded so that a clean folding line appears without causing damage or wrinkles, and the lower half-open side is folded. Folded paper strip B ₄ ,
The upper folded paper pieces B ₃ and B ₃ are rationally folded so that they fit inside B ₄ , which not only improves the finish of the packaging, but also allows 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, 3a and 3b are explanatory diagrams showing the sealing tape applying means, and FIGS. 4 and 5 are schematic diagrams showing the operating state of the device. Explanation of symbols: 1... Lamination feeding device, 3... Lifting table, 4... Reciprocating finger means, 5... Fixed finger means, 6, 7... Folding means, 15... Feeding table, 3, 41, 53, 54... Paper piece upright means, 60
... Folding plate, 63b... Moving cam, 64... Guide means,
70... Lower folding member, 71... Inclined upper side, 93... Reciprocating drive source member, A... Item to be packaged, B... Wrapping paper, B ₁ ,
B ₂ ... Standing paper piece, B ₃ , B ₄ ... Folding paper piece.

Claims (1)

[Claims] 1 The packaging work route is at least horizontal from the rear to the front, and the packaged object A is in the shape of a rectangular parallelepiped.
The front side and the rear side of _the wrapping paper B, which has _a Finger means 4 are formed along the front and rear sides of the package A, and the package A and the wrapping paper B are moved back and forth horizontally from the rear to the front. The upright pieces B 1 and B 2 are pushed out toward the fixed finger means 5 at the forward end position and passed through them, and the upright pieces B ₁ and B ₂ are pushed out and passed through the fixed finger means 5 at the forward end position.
The upper and lower folding paper pieces B 3 and B 4 are folded on the upper surface and both left and right sides to form upper and lower folded paper pieces B ₃ and B ₄ that project horizontally to the left and right, and the upper and lower folded paper pieces are provided in front of the fixed finger means 5 in the above-mentioned path. In a packaging device in which folded paper pieces B ₃ and B ₄ are folded onto both left and right sides of an object to be packaged A by means 6 and 7, the upper folding means 6 is arranged to fold the folded paper pieces B 3 and B 4 onto both left and right sides of an object to be packaged A in accordance with the width of the object to be packaged A. a pair of rectangular folding plates 60 vertically spaced apart from each other;
60 and the reciprocating drive source member 93 that drives the finger means 4, and when the finger means 4 moves forward, the folding plate 60 is moved above the height of the packaged object A, and when the finger means 4 moves back, the folding plate 60 is moved by its own weight. The lower folding means is composed of moving cams 63b, 63b that allow downward movement, and guide means 64, 64 that slidingly engages with the folding plate 60 to guide the vertical movement of the plate 60. 7 is an upper side 71 that approaches the outside of the folding plate 60 and is spaced apart from the left and right on the path according to the width of the article to be packaged A, and slopes upward toward the front;
71. A packaging device comprising lower folding members 70, 70.