JPS5926411A - Automatic packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic packaging machine, and more particularly to an automatic packaging machine used for unrolling bulky products such as paper bags.

Paper bags and the like are often wrapped in rolls of about 100 sheets, for example. This packaging process is a relatively simple process, and in the past it was mostly labor-intensive.

In addition, some parts of the packaging process may be mechanized, and mechanical work and labor-based work are combined. In some cases, semi-packed items that had passed through the facility were temporarily re-stored in the warehouse.

The present invention was created in view of the above problems, and aims to mechanize the unrolled packaging process in an integrated manner, save time for storing relatively bulky bags, etc., and reduce packaging costs. It is something to do.

Embodiments of the present invention will be described below with reference to all the drawings.

FIG. 1 is a perspective view of a paper bag manufactured at a bag-making factory. The paper bag 1 has a handle portion 2. This kind of paper bag l is the second
As shown in the figure, for example, one bundle of 25 sheets is stacked one by one on each of the four handle portions 2, fL, and the object to be packaged 3. Although the object to be packed 3 is not necessarily limited to the above-mentioned one, the present invention is applicable to an object whose external shape is approximately a rectangular parallelepiped.

To briefly describe the unwrapping and packaging process by the automatic packaging machine of the present invention, as shown in FIG. The unwound wamp 4 has a wider portion 5 than the article to be packed 3, as shown in Fig. 3←). At this time, the wide part 5 of the wamp is bent inward from all sides, l'Ll against the end surface of the object to be packaged (the third
Figure (b)). A string 6 is placed in the direction perpendicular to both bent ends.
(Fig. 3 (C)).

FIG. 4 is a hemostatic diagram showing an embodiment of the automatic packing machine of the present invention.
The automatic packaging machine 10 has a base frame 11 shown by solid lines, and various packaging elements are attached to the base frame 11 as shown by broken lines. It is inserted at the position shown, and unwound at the position shown at 13 (Fig. 3 (a)
)), and is transported along the arrow shown at 14, and the fold is tied up at the position shown at 15 (FIGS. 3(b) and 3(c)).

FIG. 5 is a schematic diagram showing the packaging elements of the automatic packaging machine shown in FIG. 4, in which the respective inserts are attached to the base frame 11 shown in FIG. First and second air cylinders 2o and 21 are provided on the free winding position axis 1 indicated by 13. First vitality cylinder 20
is operated upwards and a horizontal first plate 23 is attached. The second air cylinder 21 operates downward, and the horizontal second grate 24 is opened several times.

A movable body 26 that engages with the first plate 23 and is slidable in the horizontal direction shown in the figure is provided, and a third f-rate 27 is attached to the soil of the movable body 26. The movable body 26 is elongated so that the third plate 27 thereon can move from the insertion position 12 to the unwound position 130. The moving body 26 is a horizontally arranged third air cylinder 280.
It is engaged with a vertically extending movable member 31 whose lower end is fitted into a locking piece 30 at the tip of the rod 29. The LiJ moving part @31t consists of a pair of +11 months, which slide in a direction perpendicular to the plane of the paper. On the other hand, 5) a small grating 32 is arranged so as to be adjustable, facing the movable member 31.

The wamp rolls 33 and 33' are removed +1, and this 1
;) +7) One side is polyethylene laminated and serves as a lower mold for heat sealing. The sheet is stretched in the longitudinal direction near the unrolling position 13 as shown at 34. Above the stretched sheet 34, a horizontally longitudinally movable bottom member 35, <#i, 4 cylinders 3
6. A series of rollers 37 are arranged on the bottom member 35 in a direction perpendicular to the plane of the paper, and when these rollers 37 move to the left in the figure, the colors change freely, and when they return to the right, the colors change clockwise. It is designed to be rotated in the circular direction. The upper surface formed by these rollers 37 is arranged so as to have a height relationship that coincides with the upper surface of the third grate 27 when the first cylinder 20 is in the upper limit state of operation. A lower mold 38 for heat sealing is installed at one end of the bottom member 35. Bottom member 35
is moved to the left by the operation of the fourth cylinder 36, and when this or the left end also reaches 7-It, the above-mentioned -F type 38
A pair of upper molds 39 for heat sealing are provided, and a cutter 40 is provided between the pair of upper molds 390.

The upper die 39 and the cutter 40 are each driven in one vertical direction by a mechanism (not shown).In addition, a guide grate 41 extending vertically is provided in front of the upper die 39.

A movable body 44 supported at the tip of a piston rod 43 of a fifth air cylinder 42 that can be operated in the longitudinal direction of the machine is arranged in the center of the +1 of the machine, and a movable body 44 that can be operated in the vertical direction A sixth nitrogen cylinder 45 is attached.

A transfer member 4 is attached to the piston rod of the sixth nitrogen cylinder 45.
6 is attached t), and due to the positional relationship and cooperative relationship between the transfer member 46 and the bottom member 35, the packaged object 3 is rolled up [1
3 to the bending position 15.

The bending and string hanging position 1f15 is for bending the surplus portion 5 in the width direction of the wamp 4 (Fig. 3) from all sides along the end face of the object to be packed 3, that is, a plane parallel to the plane of the paper in Fig. 5. The elements are arranged symmetrically on both sides of the packaged object 3 (only the elements on one side are shown in the figure).

Each element includes a pair of trapezoidal plates 47 that are movable in one direction from above, and horizontally movable in one direction from the outside to the inside. I6
48. 49 and a pair of round bars 50 which can be moved to one side from below, these grate are the 7th. 8th. 9th and 10th general nitrogen cylinder 5
], , 52, 53, and 54 are connected to the piston rods. It should be noted that the mating plate 47 and the round bar 50 are each separated to form a vertical space. A string guide member 56 of the hooking mechanism 55 is provided in the space between these in a loop shape in a negative angle direction as seen in the drawing. The string hanging mechanism 55 and the string guide portion 56 may be of a well-known type that ties the string in a loop shape. A table 57 can be placed on the base of the strap hooking mechanism 55 so that it is flush with the top surface of the above-mentioned sling 35. When the round bar 50 is at one end position, it is inserted into a longitudinal groove provided in the table 57 so that it is at a position lower than the top surface of the table 57. Several pieces of cloth 58 (FIG. 6(d)) fixed to the springs are cut out.

In addition, the trapezoidal plate 47 and the horizontal grate 48° 49 are lined up ((These driving cylinders L are arranged so that they can be moved vertically by the eleventh air cylinder 59 as one unit.
I'm here.

Next, the operation will be explained. For example, the items to be packaged are stacked as shown in Figure 2: If the orientation is rotated 90 degrees from Figure 2, the position in Figure 5 is 1t'i, 12 It's 3rd place]
``Feeded on rate 27.''

The subsequent operations t are performed in sequence. A switch (not shown) is inserted. Next, the pair of r3J movable parts 31 are moved closer to each other by 4clθ angles in the plane of the paper to serve as back plates for the object to be packed 3. When the third cylinder 28 is actuated, the movable member 311 and the third plate 27 and the movable body 2
6 move to the right while sliding together with the first plate 23, and the tip of the object to be packed 3 is completely stuck! plate 32
It hits and stops. Next, when the first cylinder 20 and the second cylinder 21 are operated, the third plate 27, the movable body 26, and the first grate 23 rise, and the upper surface of the object to be packed 3 lifts the sheet 34 upward. This corresponds to the second plate 24. The biological pressure of the first nitrogen cylinder 20 is
When the air pressure is set relatively higher than the air pressure of the nitrogen cylinder 21, the first plate 23 compresses the object to be packaged 3 and
The grate 24 is pushed up and stopped when the top surface of the 37° rate 27 becomes flush with the upper surface of the moving bottom member 35 (E). At this time, the sheet 34 moves around the object to be packaged in the shape of a three-cornered square. Meat, 4th cylinder 36i1 shifted to the side from the path of the packaged item 3? Since they are clean, they will not come into contact with each other.

Fourth cylinder 36 is then actuated. The bottom member 35 is driven to the left in the figure while pushing the third plate 27 and the moving body 26. At this time, the V'-z packaged object 3 is prevented from moving to the left by the guide grate 41, and the bottom member 3
5, the leading roller 37 of the sheet 34 closes the U-shaped side of the sheet 34, so the remaining rollers 37 rotate along the curve of the object to be packaged 30F and receive it, lower mold: 38
and the bottom JrA at the corresponding position of the upper mold 39 for Heatnol.
35 +: L can be stopped. Therefore, the upper mold 39 is -1 mold 38
・Heat-seal the two strips under the guidance of the instructor.
A cutter 40 trap cuts the middle between them. After this, the ring-shaped unwound is completed, and the unwound outer wamp is heat-sealed at both ends (the two ends are joined together).Meanwhile, the sheet 34 is also joined by heat-sealing to form a continuous sheet as shown in the figure. Although both the rolls 33 and 33' are consumed by unwinding, the consumption of the roll 33' on the F side is somewhat greater.

When the unwinding is completed, the mechanism that has been used up until now is returned to the initial position, and the next article to be packaged 3 can be prepared.

As mentioned above, the rollers 37 of the bottom member 35 rotate freely when moving in the left direction, so the object to be packed 3 moves in the left direction.
When it returns to the right, the discharge roller 37 comes off (rotating in the circumferential direction and placing the unwound object 3 on top of it and holding it as it moves further). tEtsu-(, unwound packaged item 3 is the fifth
It is on the bottom member 35 at position j'i as shown in the figure. At this time, the state of the seven-wound article to be packaged is the same as that shown in No. 3N-. Next, the sixth cylinder 45 is operated to lower the transfer member 46 to dry, and the subsequent fifth cylinder 42
The object to be packaged 3 is transferred to the bending position 1ff15 by the operation of .

Subsequently, both ends of the wamp of the article to be packed 3 are bent and a string is hung. First, the trapezoidal plate 47, the horizontal plate 4849, and their driving cylinders are lowered to a predetermined rectangular position e by the operation of the eleventh cylinder (5 cylinders). Then, as shown in FIG. 6(,), the eighth and ninth cylinders 52,53 are operated, and the horizontal grate 48,49 is moved inward from the outside. , the excess portions 5 at both ends of the song are bent inward by resting on one perpendicular side.Then, the pair of seventh cylinders 51 are operated, and the pair of grates 47 having a trapezoidal outer shape are bent in the T direction. When it is driven up (Fig. 6(b)), the song end 5 &J,
It is folded once along the horizontal upper edge on top of the previously driven horizontal gray) 48.49. Subsequently, when the first O cylinder 54 is actuated, the round bar 50 is driven upward (see Fig. 6 (C)).
)), remove the remaining (11% of the song end 5 upward)
Bending the pole. This completes the bending as shown in FIG. 3(b). What should be noted is the shape of the round bar 50. This is because when the object 3 to be packed is transferred fGf to the top surface of the table 57, the excess portion 5 of the first wamp, which is wider than the object 3 to be packed, is damaged. In order to smoothly slide to the position of the table 57 without any scratches, it is placed below the upper part of the table 57, and in order to be easily driven, the width is particularly narrow in the vertical direction. As a result, even if the length h of the surplus part of the wamp (Fig. 6 (C)) changes, the round bar 50 can bend the bend 1tj.
'f! I:#JI, 11I If the two people know each other, use rubber tape 58 to hold down this end of the VC.
It is with Jin who is becoming.

Next, a trapezoidal plate 47 and a horizontal plate 48.
49 is returned to its original position, and the circle 4115 (l and rubber tape 58
Holding down the end and keeping it at f7L, stringing is carried out (Fig. 6(d)). As for the lanyard, a well-known lanyard mechanism can be used. Subsequently, when the 10th cylinder 54 and the 11th cylinder 59 are released, they are all returned to their original positions. The item 3 to be packed, which has been completely tied, is pushed out from the next item V to be packed, and is sent to a conveyor and sent to a shipping position.

As explained above, according to the present invention, the steps of unwrapping the item to be packaged, bending the entire end of the wamp, and hanging the item with string can be performed using a single machine. It is clear that this saves effort. Furthermore, it is possible to save the labor and space needed to temporarily store intermediate packaging products, which would otherwise be required if the process before the unrolling process is mechanized and the subsequent process relies on labor. Furthermore, the mechanism including the unrolling process t IIE shrinking is suitable for packaging bulky items rather than bag scales.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a paper bag, Fig. 2 is a cross-sectional view of an object to be packed, Fig. 3 is a perspective view showing the packaging process according to the present invention, and Fig. 4 is a stop surface of an embodiment of the present invention. FIG. 5 is a schematic diagram for explaining the mechanical part of FIG. 4, and FIG. 6 is a schematic diagram for explaining the bending and stringing steps. 1... Paper bag, 3... Item to be packed, 4... Wamp, 5
... Wamp surplus portion, 6... String, 12... Supply position, 13... Unwinding position, 14... Transfer direction, 15...
・Bending string wandering position, 23.24.27... Great,
26... Movable body, 33, 33'... Song roll, 35... Bottom phase, 46... Transfer member, 47.4
8.49.50...18 bending side member, 55...string hanging mechanism, 58...rubber tape. Patent applicant: Machida Shigyo Co., Ltd. Patent attorney: Akira Aoki, Patent attorney: Akira Nishidate, Patent attorney: Akira Yamaguchi

Claims (1)

[Claims] A mechanism for unwrapping the objects to be packed, which are piled up in the shape of a rectangular parallelepiped, using wider wrapping paper, and a mechanism arranged adjacent to the unwrapping mechanism to wrap the excess wrapping paper on both sides of the objects to be packed. A mechanism for folding an object from all sides along the end surface of the object, a transfer means for transferring the unwrapped object from the unwinding mechanism to the folding mechanism, and a string hook for hanging a string across the bent end surface at the transported position. Automatic packaging ie consisting of a mechanism.