JPH0366205B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a packaging device suitable for packaging objects to be packaged, such as a bundle of vinyl bags, in a vinyl sheet.

[Conventional technology]

Previously, the applicant of the present invention proposed a packaging device, which is the basis of the present invention, as Patent Application No. 128112 of 1981.

The packaging device proposed earlier consists of a sheet feeding mechanism that stacks and feeds packaging sheets supplied from above and packaging sheets supplied from below horizontally, and a plurality of stacked sheets that are stacked vertically. A vertical sealing mechanism that seals to create a cylindrical body between the sealed portions, a drawing mechanism that pulls the packaged object into the cylindrical body, and a horizontal sealing mechanism that seals both ends of the cylindrical body containing the packaged article. Equipped with a horizontal seal mechanism. In the sheet feeding mechanism, a sheet feeding conveyor is provided below each of the sealing mechanisms.

The operating order of this device is that the upper and lower sheets are slightly rolled up in the sheet feeding mechanism;
The upper sheet feeding mechanism is raised, and the tip of the drawing mechanism inserted from the opposite direction to the sheet feeding direction is made to protrude to the outside through the lower side of the upper sheet feeding mechanism, and is covered by the tip of the drawing mechanism. Grasp the package, while lowering the upper sheet feeding mechanism to pull the upper and lower sheets under each sealing mechanism, and, with the pulling mechanism inserted inside, move the overlapping sheets through the vertical sealing mechanism. to form multiple cylindrical bodies,
Next, the upper sheet feeding mechanism is raised, the object to be packaged is pulled into the inside of the cylindrical body by the drawing mechanism, the drawing mechanism is separated from the object to be pulled out from the cylindrical body, and the object is pulled out from the cylindrical body. By sealing both ends of the cylindrical body with the horizontal sealing mechanism on the sheet feeding conveyor, the article to be packaged is packed in the packaging seal, and the packaged product is taken out from above the seal feeding conveyor. There is.

[Problem that the invention seeks to solve]

In the proposed packaging device, when taking out the packaged product from above the sheet feed conveyor, the pulling mechanism is located in front of the sheet feed conveyor, and the packaged product on the sheet feed conveyor is directly discharged to the front. Therefore, conventionally, an operator had to manually take out the packaged products on the sheet feeding conveyor.

An object of the present invention is to provide a packaging device that can automatically take out packaged products on a sheet conveyor to the outside even if the pull-in mechanism is located in front of the sheet conveyor.

[Means for solving problems]

The present invention includes a sheet feeding mechanism 5 that stacks and feeds a packaging sheet 3 supplied from the upper side and a packaging sheet 8 supplied from the lower side horizontally, and a plurality of strips of the overlapping sheets in the vertical direction. A vertical sealing mechanism 31 that forms a cylindrical body 98 between the sealing portions, and a vertical sealing mechanism 31 that is arranged on an extension line of the sheet feeding direction by the sheet feeding mechanism 5 and seals between the upper and lower sheets 3 and 8 from a direction opposite to the sheet feeding direction. A pull-in mechanism 51 that moves toward the object W to be packaged, clamps the object W, and moves in the sheet feeding direction to draw the object W into the cylindrical body 98, and a mechanism 51 for storing the object W to be packaged. A horizontal sealing mechanism 41 for a bottom sheet that laterally seals the opening on the feeding direction side of the cylindrical body 98, and a horizontal sealing mechanism 42 for a top seal that laterally seals the opening on the opposite side of the cylindrical body 98. and a cutter 49 which is attached to the rear side of the horizontal sealing mechanism 42 for top sealing and cuts the subsequent upper and lower sheets 3 and 8 to form an opening on the feeding direction side of the cylindrical body 98. The packaging apparatus further includes a sheet feeding conveyor 14a below each of the sealing mechanisms in the sheet feeding mechanism 5,
The tip of the conveyor 14a is rotatable downward about the drive shaft 24 of the conveyor 14a, and the sheet feeding conveyor 14 rotates downward.
A take-out conveyor 27 for taking out the packaged product 99 to the outside is provided at a position opposite to the tip of a.

[Effect]

The present invention provides that when the packaged product 99 is formed on the sheet feeding conveyor 14a, the conveyor 14
a rotates downward with its drive shaft 24 as a fulcrum to escape from the drawing mechanism 51 arranged on the extension line of the sheet feeding direction by the sheet feeding mechanism 5, and faces the take-out conveyor 27 on the lower side. The sheet feeding conveyor 14a is driven, and the packaged products 99 on the conveyor 14a are sent onto the take-out conveyor 27, and carried out by the conveyor 27 to the outside.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

As shown in FIG. 1, an upper sheet hanging part 1 is provided in the upper part of the apparatus frame, a sheet roll 2 is placed on this upper sheet hanging part 1, and an upper vinyl sheet 3 pulled out from the sheet roll is placed on a plurality of rollers 4. The sheet is supplied to the sheet feeding mechanism 5 through the.

Similarly, a lower sheet hanging part 6 is provided at the lower part of the device frame, and a sheet roll 7 is attached to this lower sheet hanging part 6.
The lower vinyl sheet 8 pulled out from this sheet roll is fed to the sheet feeding mechanism 5 via a plurality of rollers 9.

This sheet feeding mechanism 5 further includes a feeding mechanism mainly consisting of upper and lower feeding belts 11 and 12, which are positioned as an insertion opening for an object to be packaged (for example, a bundle of plastic bags) W, and a feeding mechanism that is independently provided inside. The sheet feeding mechanism is composed of a feeding mechanism mainly including an upper feeding belt 13 and a sheet feeding conveyor 14a mainly consisting of a lower feeding belt 14. Each feed belt 11, 12,
13 and 14 are drive rollers 15 and 16, respectively.
Rotation drive is performed by 17 and 18. Then, the upper and lower sheets 3 and 8 are first attached to the belt 1.
1, 12 and rollers 19, 20 located on their sides
After sandwiching and retracting them, the upper and lower belts 13 and 1 are sandwiched between the upper and lower belts 11 and 12.
Send it in between 4. In addition, the feeding belt 13 inside the
are provided corresponding to both side edges of the sheet, and sandwich the both side edges.

The rollers 15, etc. formed by the upper feeding belt 11, the rollers 19, and some of the rollers 4 are as follows:
It is rotatably provided on the mounting plate 22 about a shaft 21, and is movable up and down. Further, the sheet feeding mechanism mainly including the feeding belts 13 and 14 is provided on a mounting plate 23, and this mounting plate 23 is provided rotatably by a fluid pressure cylinder 25 about the drive shaft 24 of the sheet feeding conveyor 14a as a fulcrum. When taking out the packaged product on the belt 14, the mounting plate 23 is rotated clockwise by the cylinder 25. A take-out conveyor 27 for taking out packaged products to the outside is provided at a position opposite to the tip of the rotated and inclined sheet feeding conveyor 14a via a chute 26 attached to the apparatus frame.

Furthermore, a vertical sealing mechanism 31 is provided on the conveyor 14 for vertically (feeding direction) to seal the horizontally overlapping sheets 3 and 8 in the sheet feeding mechanism 5.
Provided on a. This vertical seal mechanism 31 consists of two levers 33 that are rotated by a fluid pressure cylinder 32.
The two shafts 34 are rotated by the shafts 34, and the two levers 35 provided on each shaft 34 are used to vertically move the plurality of vertical heaters 37 in a horizontal state via the mounting members 36. At the same time, the lower sheets 3 and 8 are heat-fused and the fused portion is cut into two parts.

Further, horizontal seal mechanisms 41 and 42 are provided on one end and the other end of the vertical seal mechanism 31, respectively. Each of the horizontal seal mechanisms 41 and 42 is provided with a bottom seal heater 45 and a top seal heater 46 that can be moved up and down via guide rods 43 and 44, respectively, and these heaters can be moved up and down by fluid pressure cylinders 47 and 48, respectively. The upper and lower sheets 3 and 8 are heated and fused together by the respective heaters 45 and 46, and at the same time, the fused portion is
Melt it into parts. Among the top seal parts by the heater 46, the fused part on the sheet side to be used next is connected to the cutter 4, which moves up and down at the same time as the heater 46.
By cutting and removing it at step 9, the drawing mechanism 51, which will be described next, can be inserted between the sheets to be used next. The heater 46 and the cutter 49
During operation, the seat is supported by a receiving plate 52 that is moved up and down between the belts 12 and 14 by a fluid pressure cylinder or the like. In addition, the heaters 37, 45
A corresponding receiving plate (not shown) is also provided between the belts 14.

The drawing mechanism 51 is for drawing the packaged object W into the cylindrical body formed between the vertically fused portions of the upper and lower sheets by the vertical sealing mechanism 31, and includes a slider 56 movably provided by a guide rod 55.
is driven forward and backward by a chain 58 that is endlessly wound between the front and rear sprockets 57, and furthermore, an insertion plate 60 with a concave cross section is fixedly supported on this slider 56 via a mounting plate 59. A push plate 61 is slidably provided in a groove extending over the entire length of the mounting plate 60, and this push plate 61 is attached to the mounting plate 59.
It is pushed forward by a fluid pressure cylinder 62 pivotally supported above. A square hole 63 is provided at the tip of the insertion plate 60, and a leaf spring 64 attached to the lower surface of the insertion plate 60 is made to protrude obliquely upward through the hole 63, and the inclined upper surface of the leaf spring 64 is inserted into the pusher. Board 6
1, the leaf spring 64 is closed, and the object to be packaged W is gripped by upper and lower clamping plates 65 and 66 provided at the ends of the leaf spring 64 and the insert plate 60. do.

A motor 71 in FIG. 1 rotates the drive rollers of the feed belts 11, 12, 13, 14 via a chain 72 etc., and a motor 73 rotates the drive rollers of the feed belts 11, 12, 13, 14 via a chain 74 etc. The sprocket 57 is rotated, and the motor 75 also rotates a roller 77 at one end of the take-out conveyor 27 via a chain 76 or the like.

Next, details of the sheet feeding conveyor 14a will be explained based on FIGS. 2 and 3.

As shown in FIG. 2, the feed belt 14 is
A receiving plate 84 is wound around the drive roller 18 fitted to the drive shaft 24 and the driven roller 82 rotatably fitted to the three shafts 81, and further mounted on the two shafts 83. Supported by

Furthermore, as shown in FIG. 2, the base end of the fluid pressure cylinder 25 is supported by a shaft 86 on a mounting plate 85 fixed to the device frame, and the tip of the piston rod 87 of the cylinder 25 and the mounting plate 23 are connected to each other. A lever 88 fixed to the lower part is rotatably pivoted.

Then, by pushing out the piston rod 87 of the cylinder 25, the mounting plate 23 is rotated downward about the shaft 24, as shown by the chain line in FIG. As a result, the feed belts 13, 14, etc. provided on the mounting plate 23 are integrally tilted downward.

Furthermore, as shown in FIG. 3, the sheet feeding conveyor 14a, which mainly includes the belt 14, is provided with a plurality of sets between the mounting plates 23 on both sides.
is rotatably provided on the drive shaft 24 by a bearing 89. Further, the roller 82 supporting the right end side of each belt 14 is attached to the mounting plate 2 by means of an adjusting screw 90.
A roller 82 is rotatably fitted on a common shaft 81 whose movement can be adjusted within a cut groove 91 of the belt 14, and which supports the left end side of each belt 14. It is rotatably supported via individual brackets 93.

Furthermore, as shown in FIG. 3, a fixed frame 9 is attached to both ends of the sheet feeding conveyor 14a.
A heater receiving plate 96 located between each conveyor 14a is installed between the conveyors 14 and 95, and the sheets are fused and melted by the vertical heater 37 on the upper surface of the receiving plate 96.

Note that the shaft 24 is not only a pivot shaft for the mounting plate 23 but also a rotational drive shaft that transmits rotation to the drive roller 18 .

Next, the overall operating sequence of this packaging device will be explained with reference to FIG.

A With the upper sheet 3 rolled up between the belt 11 and the sheet pusher 81 shown in FIG.
By rotating the mounting plate 22 provided with these components upward about the shaft 21 by a fluid pressure cylinder (not shown), the upper feeding belt 1
1 is separated from the lower feeding belt 12, and the drawing mechanism 51 is moved between the upper and lower belts 11 and 12.
Insert the insertion plate 60.

B. The upper belt 11 and the like are lowered, and the upper and lower sheets 3 and 8 are sandwiched between the upper and lower belts 11 and 12 and fed between the belts 13 and 14.

C. Clamping parts 65, 66 at the tip of the drawing mechanism 51
grips the object W to be packaged, and at the same time lowers the heater 37 of the vertical sealing mechanism 31 to seal the upper and lower sheets 3, 8 in a plurality of strips (5 strips in FIG. 4) in the vertical direction.
At the same time as heating and fusing, the central portion of the welded portion is cut. In this way, four cylindrical bodies 98 are formed separately.

D: By raising the sheet feeding mechanism mainly including the belt 11 in the same way as in A and retracting the drawing mechanism 51, the cylindrical body 98 between the upper and lower sheets is removed.
The object W to be packaged is drawn into the container.

E Gripping parts 65 and 66 at the tip of the drawing mechanism 51
Then, the drawing mechanism 51 is pulled out from inside each cylindrical body 98.

F. The openings at both ends of the cylindrical body 98 are heat-sealed by the heaters 45, 46 of the horizontal sealing mechanisms 41, 42 and simultaneously fused to separate and form four packaged products 99, which are packaged inside a plastic bag. Seal the object W. At the same time, in the next step A, the drawing mechanism 5
1 between the upper and lower sheets 3 and 8,
The heater 46 is installed near the belts 11 and 12.
The cutter 49 cuts off the thermally fused portion between the upper and lower sheets 3 and 8 fused together, thereby separating the upper sheet 3 and the lower sheet 8. 100 is
This is the cut line formed by the cutter 49. Furthermore, it is convenient to leave the opposite side edges 101 of the sheets 3 and 8 without cutting them off and to hold them between the belts 13 and 14 so that the next sheet can be continuously fed.

Finally, when taking out the packaged product 99 on the sheet feeding conveyor 14a to the outside, the cylinder 2
5, the mounting plate 23 is rotated slightly clockwise about the shaft 24, and the feed belts 13, 14 are tilted diagonally downward as shown by the chain lines in FIG. 2. In this state, the belts 13, 14 are Rotating drive,
Each packaged product 99 between the belts 13 and 14 is discharged onto the chute 26, transferred through the chute 26 onto the take-out conveyor 27, and taken out by the conveyor 27 to the outside.

〔Effect of the invention〕

According to the present invention, the sheet feeding conveyor provided below the sealing mechanism in the sheet feeding mechanism is provided such that the leading end of the conveyor is rotatable downward about the drive shaft of the conveyor. Since the take-out conveyor for taking out the packaged product outside is provided at a position opposite to the leading end of the rotated sheet feed conveyor, even if the pull-in mechanism is placed on the extension line of the sheet feed direction by the sheet feed mechanism,
By rotating the tip of the sheet feeding conveyor downward to the take-out conveyor side, the packaged products on the sheet feeding conveyor can be automatically taken out to the outside, and the packaged products on the sheet feeding conveyor can be handled as before. There is no need for a person to take it out manually.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the packaging device of the present invention, Fig. 2 is a sectional view of the main part thereof, Fig. 3 is a partially cutaway plan view thereof, and Fig. 4 shows the operation of the device. FIG. W...Object to be packaged, 3...Upper sheet, 5...Sheet feeding mechanism, 8...Lower sheet, 14a...Sheet feeding conveyor, 24...Drive shaft, 27...Takeout conveyor, 3
1... Vertical seal mechanism, 41, 42... Horizontal seal mechanism,
49... cutter, 51... retraction mechanism, 98... cylindrical body,
99...Packaged products.

Claims (1)

[Claims] 1. A sheet feeding mechanism that stacks and feeds packaging sheets supplied from the upper side and packaging sheets supplied from the lower side horizontally, and seals the overlapping sheets in multiple strips in the vertical direction to create a seal between the sealed parts. A vertical sealing mechanism that forms a cylindrical body, and a sealing mechanism that is arranged on an extension line of the sheet feeding direction by the sheet feeding mechanism and moves between the upper and lower sheets from the direction opposite to the sheet feeding direction toward the object to be packaged. A pull-in mechanism that pulls the packaged object into the cylindrical body by pinching and moving it in the sheet feeding direction, and a bottom seal that laterally seals the opening on the feeding direction side of the cylindrical body containing the packaged article. a horizontal sealing mechanism for a top seal that laterally seals the opening on the opposite side of the cylindrical body; and a cutter forming an opening on the feeding direction side of the cylindrical body, the sheet feeding mechanism is provided with a sheet feeding conveyor below each of the sealing mechanisms, and the sheet feeding conveyor is provided below each of the sealing mechanisms, The conveyor is provided so that the tip of the conveyor can rotate downward about the drive shaft of the conveyor, and the packaged product is taken out to the outside at a position opposite to the tip of the sheet feeding conveyor that has rotated downward. A packaging device characterized by being provided with a take-out conveyor.