JPH0314684B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Use) 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 pieces of the wrapping paper. In particular, the present invention relates to improvements in finger means in packaging devices.

(Prior art) The inventor of the present invention
(filed on the 11th), we proposed a packaging device that automatically wraps rectangular parallelepiped items. This packaging device stacks wrapping paper and items to be packaged on a table that can be raised and lowered, lowers the table and raises the front and back of the wrapping paper, and then moves the fingers forward to automatically remove the protruding pieces of the wrapping paper. The main purpose of this is to fold 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, the folded paper pieces on both sides of the wrapping paper folded by the forward movement of the fingers may be pulled back by the action of the fingers in the backward movement. This has caused users to strongly desire a method to prevent the folded protruding piece from being pulled back, resulting in poor packaging. In addition, since the fingers are formed as a single piece, there is a problem in that it cannot be handled when the dimensions of the packaged items differ, especially when the height differs, and improvements in this respect are also desired. Ta.

The present invention has been made in view of the above, and its purpose is to:
To provide a new packaging device that can reliably prevent side projecting pieces of wrapping paper that have already been folded onto both sides of a moving object from being pulled back.

(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 perspective view showing an embodiment of the packaging device of the present invention, Fig. 2 is a vertical cross-sectional view taken along the line -- in Fig. 1, and Fig. 3a is a partially cutaway exploded perspective view of the reciprocating finger means of the device. Fig. 3b
is a view taken along the Z line in FIG. 3a, FIG. 3c is a partial perspective view of the fixing finger means of the same device, and FIGS.
Each figure is a schematic diagram showing the operating state of the device.

The packaging apparatus of the present invention takes a substantially "L"-shaped packaging work path vertically downward and horizontally forward. A rectangular parallelepiped-shaped packaged item A is stacked and held on top of the wrapped wrapping paper B, and the table 3
While the vertical work path is being lowered and reaching the bottom dead center, paper strip raising internal means 59 provided before and after the vertical working path,
59a and 41, the front side part and the rear side part of the wrapping paper B are raised along the front and rear sides of the article to be packaged A to form a front side upright piece _B2 and a rear side upright piece _B1 . The object to be packaged A and the wrapping paper B in the above state on the table 3 are moved by the finger means 4 which is horizontally reciprocated back and forth from the rear part to the front part of the table 3 at a point position. is pushed out toward the fixed finger means 5 at the front position of the forward end of the forward movement, and the finger means 4 and 5 lift the upright pieces B ₁ and B ₂ onto the top surface and both left and right side surfaces of the packaged object A. In the folding packaging device, the finger means 4 includes a transversely horizontal top finger plate 41 forming the rear paper strip raising inner means 41 at the end position of the backward movement, and a top finger plate 41 that is suspended at the rear of the finger plate 41. pressed plate 42
and a pair of plate-shaped fingers on the left and right, upper and lower ends of the push plate 42, which sandwich the width of the packaged object A between them and protrude horizontally and parallelly forward in a manner corresponding to the height thereof. 43, 43, 44, 44, and the fixed finger means 5
are horizontally spaced apart corresponding to the width of the packaged object A, projecting rearward from the front base corresponding to the height, and inserted between the upper and lower finger pieces 43 and 44 at the forward movement end position. A pair of protruding parts 5
3.54.

To describe the general working area of machine stand F of this packaging device, the latter half of the machine is generally used for packaged items A.
The central part is the part where the article to be packaged A and the wrapping paper B are stacked and folded, and the front half is the part where the wrapping paper B is folded and sealed with adhesive tape. In addition, wrapping paper B is placed in the lower half of the machine F.
A driving means 9 is provided for performing the feeding operation of the feeding device 1 for feeding out, the vertical movement of the table 3, and the back and forth reciprocation of the finger member 4.

The delivery table 2 for sending out the packaged object A is the first one.
As shown in the figure and FIG. 2, it is removably placed on the upper surface of the rear half of the machine stand F, and a space 21 for storing compressed air is formed on the back surface of the machine. When installed in the position, it communicates with the ventilation passage _F1 in the frame of the machine F through the ventilation hole 211 opened at the rear end, and this ventilation passage
Compressed air is supplied to _F1 from an air supply pump _F2 . The board surface of the delivery table 2 is equipped with a plurality of ball valves (ventilation valves) 22 for controlling the discharge of the compressed air stored in the space 21. A ball is always loaded in an upwardly biased state, and a part of the ball protrudes from the surface of the delivery table 2 and is engaged with a valve seat, thereby preventing discharge of compressed air. The above space part 21
so that all of these ball valves 22...
It is formed by a back plate and side spacer plates. In addition, a second vent valve 23 is provided at the center of the front end of the delivery table 2 for discharging compressed air forward, and the vent valve 23 normally closes the valve passage with its own weight. It is constructed so that when the packaged item A on the delivery table 2 hits, it rotates and opens the valve passage.

The stacking and feeding device 1 for wrapping paper B is connected to the above-mentioned feeding table 2.
A stacking table 11 that is disposed at the bottom of the holder and lowers backwards to stack a large number of wrapping papers B, a feeding member 12 that feeds out the stacked wrapping papers B one by one from the top, and a table to which the rolled-out wrapping papers B are stacked. 3, and a delivery roll 13 to be sent onto the stacking table 11,
The feeding member 12 and the feeding roll 13 are mounted on a support frame 10 which is disposed at the lower part of the feeding table 2 on the side frame of the machine stand F so as to be slidable back and forth. In the feeding member 12, a roller 121 (a bearing with a clutch that is allowed to rotate only in the return direction) fitted onto a paper pushing rod 120 is supported by a sprocket 123 through the reciprocating movement of support plates 93, 93 for reciprocating movement of the finger means 4. By interlocking via the chain 122, only one sheet of wrapping paper B is slightly fed out during forward movement.

The elevating table 3 includes two vertical slide rods 31, which are held vertically slidably with respect to an intermediate base _F0 .
The block 32 supported by the slide rods 31 and 31 is fixed jointly to the lower ends of the slide rods 31 and 31, and is driven upward and downward by the driving force of the drive means 9 to be described later, 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 46, 46 fixed on both sides of the machine base F, a vertical push plate 42 fixed at the rear between these side plates, and horizontally vertically extending vertically on both ends of the push plates. Opposed upper finger pieces 43, 43 and lower finger pieces 44, 44,
A horizontal finger plate 41 is detachably attached over both upper finger pieces 43, 43.
(Together with the vertical fixing plate 59 and the restraining plate 59a, it constitutes an internal means for raising paper strips).
The lower finger pieces 44, 44 are horizontal elongated holes 42a, 4 provided below both ends of the push plate 42, respectively.
It is fixed by stops 42b, 42b so as to be movable along the longitudinal direction of the push plate 42 via 2a. Moreover, threaded rod bodies 45a, which constitute means 45 for vertically moving the upper finger pieces 43, 43, are each fixed in a vertical position on these lower finger pieces. A long knurled nut 45b having a sleeve portion is screwed onto the threaded rod body 45a, and the knurled nut 45b is inserted into the sleeve portion through the upper finger piece 43 and the through holes 43b of the horizontal finger plate 41. It carries an upper finger piece and a horizontal finger plate. The finger plate 41 has a long hole 41b.
upper finger piece 43 by means of stop b through
Fixed on top. The push plate 42 has a long hole 42
Knurled nut 45 above a, 42a.
Cutout holes 42c, 42c for rotating b.
is drilled. In addition, the upper finger part 4
On the inner side of the upper surface of 3, 43, there are cutout stepped portions 43a, 4.
3a is formed, and the notch steps 43a, 4
Both edges of the finger means 4 form a substantially "V" shape that widens in the forward movement direction of the finger means 4. The reciprocating finger means 4 having the above structure is reciprocated in conjunction with the elevating table 3 by a driving means 9, as will be described later. The heads of the hexagonal socket bolts 45c, which attach the threaded rod body 45a to the lower finger piece 44, prevent the knurled nuts 45b from completely lowering.

The fixed finger means 5 is arranged between the top plate 51 near the end position of the reciprocating finger means 4 and the wrapping paper folding/discharging table 52.
A pair of finger pieces are provided in opposing relation to each other. The fixed finger means 5 includes a pair of side plates 56, 56 suspended from a pair of guide rods 55, 55 horizontally suspended between the supports _F3 of the machine stand F above the top plate 51, and the side plates 56. , 56, the upper plates 53, 5 are provided in a substantially dogleg shape when viewed from the side.
3 and lower plates 54, 54. The distance between the side plates 56, 56 is adjusted by positioning adjustment screws 57, 57 which are freely rotatable with respect to the support plate _F3 and are screwed into the side plates. 54 is fixed to the side plates 56, 56, whereas the upper plates 53, 53 can be rotated and adjusted around the fulcrum shafts 53a, 53a at the tips, and fasteners 56b are provided in the arcuate holes 56a, 56a of the side plates. It is designed to be fixed in accordance with the height of the object A to be packaged. Further, a support rod 5 is provided between the lifting table 3 and the fixed finger means 5.
A presser tool 58 is swingably suspended, and includes one-way rollers 58b, 58b (rotating in the direction of arrow Y) provided horizontally on both sides via 8a. The rollers 58b, 58b are designed to fit into a notch 41c provided at the central front edge of the finger plate 41 when the reciprocating finger means 4 reciprocates, and the front upright piece B ₂ is connected to the rear upright piece B. _2Place it on top and press it down. Further, substantially directly above the rear end of the top plate 51, there is a vertical fixing plate 5 that is horizontally suspended in the width direction of the machine base F.
9 and a restraining plate 59a which is freely tiltable back and forth are arranged close to each other in the front and back, and the restraining plate 59a normally stands up due to the restoring elasticity of a compression spring (not shown), and when the finger means 4 returns, the operating rod 59a (not shown), the upper end thereof is tilted forward in response to a pressing force against the elasticity of the compression spring. Further, a compressed air storage box 520 for storing compressed air from the air supply pump _F2 is formed on the lower surface of the folding/discharging table 52, and
The discharge table 52 has a large number of small holes 521 that communicate with the plate surface and the space.

The folding pieces 6, 7, 8 are connected to the finger means 4.
and the front and rear upright paper pieces by the fixed finger means 5.
_The upper and lower folded paper pieces B _{3 and B 4 , which are folded together with B 1} , B ₂ and the vertical part of the laterally protruding paper pieces and project almost horizontally on the left and right sides of the packaged object A, are moved in front of the reciprocating finger means ₄ . It is intended to be folded up and down sequentially under the force of extrusion. The folding pieces 6 have lower sides 61 that slope forward and downward, and are hung in pairs on the left and right sides following the top plate 51, and the folding pieces 7 are
A pair of folding pieces 8 are provided vertically on the left and right sides of the folding/discharging table 52 with upper sides 71 slanting upward in the front direction, and a pair of folding pieces 8 are arranged horizontally on the front upper part of the folding/discharging table 52 on the left and right sides. provided, and its opposite side 8
The distance between 1 and 81 gradually narrows toward the front.

The driving means 9 includes a motor 90 and a motor 9.
a crank 91 fixed to a rotating shaft of 0, a connecting rod 92 pivotally attached to the tip of the crank 91, one of which is pivotally attached to the tip of the connecting rod 92, and the finger means 4 is erected and supported at the upper end. A pair of left and right support plates 9
3 and 93, and a slide block 94 that connects the lower ends of the support plates 93 and 93 and is held by a pair of left and right slide rods 941 and 941 so as to be slidable back and forth.
A plate cam 95 is fixed to the slide block 94 and has a horizontal cam surface 951 on its upper surface and an inclined cam surface 952 that continuously slopes upward in front of the horizontal cam surface 951, and an intermediate base at the front end. It is pivotally attached to the lower surface of F ₀ via a support piece 961, and its rear end is locked to the block 32 of the elevating table 3 via a long hole 962, and the horizontal cam surface 951 of the plate cam 95 and the inclined It consists of a crank 96 equipped with a roller 963 that rolls on a cam surface 952.

(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 feeding table 2, and a large number of wrapping papers B are stacked on the stacking table 11 of the stacking and feeding device 1. The vertical position of the upper finger pieces 43, 43 is adjusted in the reciprocating finger means 4 via the knurled nuts 45b, 45b in accordance with the dimensions of the object to be packaged A, and then the stops 42b, 42b are loosened to remove the lower finger parts. The left and right distances between the pieces 44, 44 and the upper finger pieces 43, 43 are adjusted, and each is locked after adjustment. Further, the stopper b of the fixing finger means 5 is loosened to adjust the inclination angle of the upper plates 53, 53 and lock them in accordance with the height of the upper finger pieces 43, 43. Next, the motor 90 is switched on to rotate the crank 91 in the direction of arrow S. As the crank 91 rotates, the support plates 93, 93 move backward under the action of the connecting rod 92, and as a result, the plate cam 95
When the roller 963 rolls on the cam surfaces 951 and 952 and 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 the slide rods 31, 31 slide upward, and the lifting 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 delivered by the delivery member 12, is clamped, and by its rotational force, the wrapping paper B is quickly sent onto the rising table 3.
See Figure 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 the wrapping paper B is fed, the front side of the wrapping paper B is properly inserted and placed between the vertical fixing plate 59 and the restraining plate 59a, 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 time, the ball valve 22 is placed on the feed table 1.
Because there are multiple ..., the weight of the packaged item A pushes down the ball and opens the valve, compressed air is blown out from there, and the air pressure gives a buoyant force to the packaged item A. A is delivered extremely lightly. Furthermore, when the article to be packaged A reaches the front part of the delivery table 2, the ventilation valve 23 is opened, and the compressed air blown out from there is diffused onto the wrapping paper B spread out on the table 3, and this diffusion Due to the levitation effect of the air, the packaged item A is lightly placed in a predetermined position without hitting the wrapping paper B. At this top dead center, it is desirable to keep the table 3 stationary for a while.
Therefore, although not shown in the drawings, when the support plate 93 reaches the end position of the backward motion, a limit switch is pressed to automatically stop the rotation of the motor 90.

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 moves to the inclined cam of the plate cam 95 as the crank 91 rotates. The table 3 slides down along the surface 952 and rapidly descends. At the same time, the forward movement of the support plates 93, 93 is started, and the chain 122 is pulled by the forward movement of the support plates 93, 93, and the paper pushing rod 120 presses up over the wrapping paper B, so that only one piece of the wrapping paper B is pushed up. It is fed out and waits for feeding by the feeding roller 13. When the roller 963 starts rolling on the horizontal cam surface and the table reaches the bottom dead center, the table 3 remains still, and the restraining plate 59a stands up and clamps the front end of the wrapping paper B with the fixed plate 59. The finger means 4 passes over the table 3 [see FIG. 4C]. The time program for the lowering and resting of the table 3 and the reciprocating movement of the finger means 4 is appropriately set by setting the shape of the plate cam 95, the vertical stroke width of the table 3, and the position of the forward movement start point of the finger means 4. Ru. When the table 3 is lowered, the front side of the wrapping paper B is
9a and the fixing plate ₅₉ so that it stands up as it is pulled, and the rear side stands up by the finger plate 41 of the finger means 4.
B ₁ and these upright pieces B ₁ and B ₂ are
The wrapping paper B is pulled back and forth due to the clamping resistance between the wrapping paper B and the fixing plate 59, and a so-called body press is performed, so that the wrapping paper B is folded faithfully to the shape of the packaged item A without loosening.

When the finger means 4 hits the packaged article A from above the horizontal front paper B and starts to extrude it, the finger plate 41 and the top plate 51 move the front and rear upright pieces.
B ₁ and B ₂ are folded in the front and rear directions, and the left and right sides of the upright pieces B ₁ and B ₂ are attached to the packaged object A by the upper and lower finger pieces 43 and 44 and the fixed finger means 5 and 5. folded into the side of the
Folded paper pieces that protrude from the upper left and right sides that occur at this time
The oblique side of B ₃ is accommodated within the cutout 43a of the upper finger piece 43.

Further, as the object A to be packaged is pushed out between the top plate 51 and the folding/discharging table 52 by the reciprocating finger means 4, the holding tool 58 is folded onto the object A to be packaged _. Stretch it so that there is no slack, and as shown in Figure 5 A, B, and C,
The folded paper piece _B3 protruding to the left and right on the upper side is folded downward by the downwardly inclined lower sides 61, 61 of the folding pieces 6, 6, and then folded downward by the upwardly inclined upper sides 71, 71 of the folding pieces 7, 7. A long folded paper piece B ₄ protruding from the left and right sides is folded upward, and these folded pieces 8,
8 is folded onto the upper surface of the packaged object A. All packaging is completed by appropriately adhesively fixing the tip of this folded paper piece _B4 with adhesive tape or the like. The finger means 4 pushes out the wrapping paper B and the packaged article A from the table 3 onto the folding/discharging table 52 as described above, and then moves backward as described below. The plates 53 and 54 are the upper and lower finger pieces 4 that are about to move back.
3 and 44 and presses the left and right sides of the upright pieces B ₁ and B ₂ folded on the left and right sides of the packaged object A, and the return movement of the finger means 4 pushes these left and right sides together. This prevents the parts from being pulled back. In this way, the upper and lower folded paper pieces B ₃ and B ₄ protruding to the left and right sides of the wrapping paper B are sequentially folded while moving forward on the folding/discharging table 52.
On the surface of the discharge table 52, there is a storage box 5 on the lower surface.
Since compressed air is constantly being ejected from 20 through the small holes 521, the floating effect of the compressed air ensures smooth transfer and discharge.

In this way, the folding of the folded paper pieces B ₃ and B ₄ is completed,
When the crank 91 rotates once, the support plates 93, 93 and the plate cam 95 start to move backward. While the roller 963 is rolling on the horizontal cam surface 951, the table 3 stops at the bottom dead center and the finger member 4 passes over it, and when it finishes passing, that is, when the roller 963 approaches the inclined cam surface 952. Table 3 begins to rise. The table 3 is constructed by vertically swinging the crank 96 with the pivot point on the support piece 961 as the fulcrum, and its power point is between the pivot point and the block 32.
Since it is on the roller 963 between the roller 963
The working stroke at is doubled at block 32 and rises rapidly.

It should be noted that the packaging device adopted in the above embodiment is merely an example, and it goes without saying that the packaging device can be applied to packaging devices having other configurations without departing from the present invention.

(Effects of the Invention) As described above, according to the packaging apparatus of the present invention, the reciprocating finger means 4 is formed by the upper and lower finger pieces 43 and 44, and when the finger means 4 moves forward, the fixed finger Projecting portion 5 of means 5
3 and 54 are configured to be inserted between the finger pieces 43 and 44, so that even if the finger means 4 moves back, the folded side part remains in the protruding part 5.
3 and 54 are held down, effectively preventing it from being pulled back and allowing the smooth folding operation to continue.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the packaging device of the present invention, Fig. 2 is a vertical cross-sectional view taken along the line -- in Fig. 1, and Fig. 3a is a partially cutaway exploded perspective view of the reciprocating finger means of the device. Figure 3b is a Z-line arrow view of Figure 3a,
FIG. 3c is a partial perspective view of the fixing finger means of the device, and FIGS. 4 and 5 are schematic diagrams showing the operating state of the device, respectively. Explanation of symbols, 1... Lamination feeding device, 2... Feeding table, 3... Lifting table, 4... Reciprocating finger means, 41... Top finger plate, 42... Push plate, 43... Upper finger piece, 43a... Notch Part, 44... Lower finger piece, 5... Fixed finger means, 53, 54... Projecting portion (upper plate, lower plate), 59, 59a, 41... Paper piece raising inner means,
A: Item to be packaged, B: Wrapping paper.

Claims (1)

[Claims] 1 The packaging work route is approximately “L” shaped vertically downward and horizontally forward, and the table 3 is moved at the top dead center position of the lifting table 3 which is driven vertically up and down.
A rectangular parallelepiped-shaped packaged object A is stacked and held on the wrapping paper B laid on top, and while the table 3 is lowered and reaches the bottom dead center, the paper strips set up before and after the vertical work path are By the means 59, 59a, 41, the front side and the rear side of the wrapping paper B are wrapped around the article A.
The front side upright piece B ₂ and the rear side upright piece B ₁ are made to stand up along the front and rear sides of the table 3 and are horizontally reciprocated back and forth from the rear part to the front part on the table 3 at the bottom dead center position. By means of the finger means 4, the article to be packaged A and the wrapping paper B in the above-mentioned state on the table 3 are pushed out toward the fixed finger means 5 at the forward end position of the forward movement end of the finger means 4 and passed through both these finger means. 4 and 5 stand up pieces
In a packaging device that folds B ₁ and B ₂ onto the top surface and both left and right side surfaces of the article to be packaged, the finger means 4 is folded in the transverse direction forming the paper piece raising inner means 41 on the rear side at the backward movement end position. A horizontal top finger plate 41, a push plate 42 hanging down from the rear of the finger plate 41, and a width of the packaged article A sandwiched between the left and right end portions of the push plate 42 and a height thereof. A pair of left and right, upper and lower plate-shaped finger pieces 4 are correspondingly provided horizontally and parallelly protruding forward.
Consisting of 3, 43, 44, 44,
The fixed finger means 5 is spaced apart in the lateral direction corresponding to the width of the packaged article A, and protrudes rearward from a front base corresponding to the height thereof, and is located between the upper and lower finger pieces 43 and 44 at a forward movement end position. A packaging device comprising a pair of left and right protruding portions 53 and 54 shaped to be inserted.