JPH0366206B2 - - 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. The drawing mechanism is provided with a hand portion which can be freely opened and closed to hold the object to be packaged at its tip.

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 hand portion of the drawing mechanism inserted from the direction opposite to the sheet feeding direction is made to protrude to the outside through the lower side of the upper sheet feeding mechanism. grip the packaged item, then lower the upper sheet feeding mechanism to pull the upper and lower sheets under each sealing mechanism, and then, with the pulling mechanism inserted inside, pull the overlapping sheets vertically. A plurality of cylindrical bodies are formed into a flat shape by sheeting by a sealing mechanism, and then the upper sheet feeding mechanism is raised and the object to be packaged is moved into the inside of the flat cylindrical body by the drawing mechanism. Next, the hand part of this drawing mechanism is released from the object to be packaged and pulled out from the cylindrical body, and both ends of this cylindrical body are sealed by the horizontal sealing mechanism to place the object to be packaged in the sheet. We are trying to get bagged and packaged products.

[Problem that the invention seeks to solve]

The proposed packaging device does not show the details of the pulling mechanism, and in particular, the hand section provided at the tip of the pulling mechanism holds the object to be packaged and moves the flat cylindrical body. Since it is inserted internally, a structure suitable for its function is required.

An object of the present invention is to provide the tip of the pulling mechanism for holding the object to be packaged as flat as possible so that it can move smoothly inside the flat cylindrical body.

[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 seal 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. In the packaging apparatus, the drawing mechanism 51 moves a long insertion plate 60 inserted from an opening on the feeding direction side between the upper and lower sheets 3 and 8 and protruding from the opening on the opposite side to feed the sheet. Mechanism 5
A push plate guide groove 84 is provided in this insert plate 60, and a push plate 61 parallel to the insert plate 60 is placed in this push plate guide groove 84.
It is slidably provided by an actuator 62 provided on the base end of the insertion plate 60, and has a flat part facing the flat part of the insertion plate 60 from a slightly inner side of the tip of the insertion plate 60 and facing the flat part of the insertion plate 60 so as to be openable and closable. Movable member 64
is protruded in an inclined manner, the tip of the push plate 61 is opposed to the inclined back surface of the movable member 64, and the tip of the movable member 64 and the side end of the insertion plate 60 are connected to each other.
A forward position that protrudes from between the upper and lower sheets 3 and 8 to sandwich the packaged object W, and a forward position in which the packaged object W drawn into the cylindrical body 98 is released and escapes from the opening on the feeding direction side of the cylindrical body 98. The upper and lower clamping parts 6 are movable by moving the insertion plate 60 back and forth between the retracted position and the retracted position.
5,66.

[Effect]

In the present invention, the insertion plate 60 passes between the upper and lower sheet feeding mechanisms 5 and protrudes to the opposite side, and the push plate 6
1 is pushed forward by the actuator 62, the inclined upper surface of the movable member 64 is pressed by the tip of the pushing plate 61, and the holding portion 6 at the tip is pressed.
5 and 66 sandwich the object W to be packaged.

Next, the insertion plate 60 is retreated to pull the sandwiched object W into the cylindrical body 98, and then the push plate 61 is retreated to move the sandwiching parts 65, 66 to the packaged object. Release from object W. Furthermore, the insertion plate 60 is retreated from the inside of the cylindrical body 98, and finally the horizontal sealing mechanisms 41, 42
The openings at both ends of the cylindrical body 98 are sealed.

〔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 provided on a mounting plate 22 that is rotatable 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.

Furthermore, 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 are moved up and down by fluid pressure cylinders 47 and 48, respectively. The upper and lower sheets 3 and 8 are heated and fused 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 welded 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 a cylindrical body (indicated by 98 in FIG. 4) formed between the longitudinally fused portions of the upper and lower sheets by the vertical sealing mechanism 31. , a slider 56 movably fitted onto a guide rod 55 is attached to a chain 5 endlessly wound between front and rear sprockets 57.
Further, an insertion plate 60 having a concave cross section located on an extension line of the sheet feeding direction by the sheet feeding mechanism 5 is fixedly supported on the slider 56 via a mounting plate 59. In this way, the insertion plate 60 is provided so as to be movable forward and backward relative to the sheet feeding mechanism 5.

Further, a push plate 61 is slidably fitted over almost the entire length of the insertion plate 60.
is made to slide by a fluid pressure cylinder 62 as an actuator that is pivotally supported on the base end of the insertion plate 60, and a notch groove 63 is formed at the tip of the insertion plate 60, and the difference The base end of a spring plate 64 as a movable member is fixed to the lower surface of a portion slightly inside from the tip of the insert plate 60, and the spring plate 64 is provided to protrude diagonally forward from this portion through the notch groove 63. The tip of the pushing plate 61 is opposed to the inclined back surface of the spring plate 64, and the spring plate 6
4 and the tip of the insertion plate 60 are provided with upper and lower clamping parts 65 and 66 for gripping the packaged object W.

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.

2 and 3 are enlarged views of the drawing mechanism 51, in which a concave push plate guide groove 84 is provided along the entire length of the insertion plate 60, and the push plate guide groove 84 is provided with a push plate guide groove 84 that extends along the entire length of the insertion plate 60. The push plate 61 is slidably fitted and held in the guide groove 84 by a press plate 85 fixed to the upper surface of the insertion plate 60. Furthermore, the guide rods 55 are provided parallel to both sides of the device frame, the sliders 56 are fitted onto the rods 55 on both sides via slide bearings 86, and a common slide base 87 is spanned between the sliders on both sides. A plurality of sets of the insertion plates 60 are provided on the slide base 87 via the mounting plates 59, respectively. Furthermore, on one end of the guide rod 55 the supporting frame 88,
A roller 90 is rotatably provided via the shaft support plate 89, and the lower surface of each of the insertion plates 60 is supported by this roller 90. In FIG. 3, reference numeral 91 denotes bearings fitted to both end surfaces of the roller 90 for supporting the roller.

Then, the pulling mechanism 51
By rotating the slider 8, the slider 56
The insertion plate 60 is moved forward or backward by sliding. Further, the pushing plate 61 is moved to the cylinder 62.
By pushing the spring plate 64 forward,
The tip of the pushing plate 61 presses the inclined upper surface of the object W to be packaged, and the holding parts 65 and 66 at the tip are closed.
to hold. Moreover, by retracting the pushing plate 61, the object W to be packaged is held by the holding parts 65 and 66.
Release the clamping.

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. Further, the edges 101 on both sides of the sheets 3 and 8 are left uncut, and the belts 13 and 14 are
It is convenient to hold the sheet between the sheets so that the next sheet can be fed continuously.

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. 1. 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.

In the above embodiment, the spring plate 64 was used as a movable member for holding the object to be packaged. However, as this movable member, a plate member or a plurality of rod members or the like may be hinged to the insertion plate 60. The movable member may be pivoted so as to be vertically movable, and the movable member may be urged upward by a separate elastic member.

〔Effect of the invention〕

According to the present invention, as a mechanism for pulling in objects to be packaged,
A long insert plate that is inserted from an opening on the feeding direction side between the upper and lower sheets and protrudes from the opening on the opposite side is provided so as to be movable back and forth along the sheet feeding mechanism, and a push plate guide groove is provided in this insert plate. A push plate parallel to the insert plate is provided in the push plate guide groove so as to be slidable by an actuator provided on the base end of the insert plate, and a push plate is provided in the push plate guide groove from a slightly inner side than the tip of the insert plate. A movable member having a flat part facing the flat part of the insertion plate in a manner that can be opened and closed diagonally forward is provided in an inclined manner, and the tip of the pushing plate is opposed to the inclined back surface of the movable member, and the tip of the movable member is and the tip of the insertion plate, a forward position in which it protrudes from between the upper and lower sheets to clamp the packaged object, and a forward position in which the packaged object drawn into the cylindrical body is released and the cylindrical body is fed in the forward direction. Since upper and lower clamping parts are provided that are movable by advancing and retracting the insertion plate between the retracted position and the retracted position where the package is pulled out from the opening of It can be configured to be flat, and this drawing mechanism can be smoothly moved inside the flat cylindrical body.

[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, 31...Vertical sealing mechanism,
41, 42...Horizontal seal mechanism, 49...Cut, 51
... Pulling mechanism, 60 ... Insert plate, 61 ... Push plate, 62
...Fluid pressure cylinder as actuator, 64
... Spring plate as a movable member, 65, 66... Holding part, 84... Push plate guide groove, 98... Cylindrical body.

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, wherein the drawing mechanism is inserted from the opening on the feeding direction side between the upper and lower sheets to open the opening on the opposite side. A long insertion plate protruding from the opening is provided so as to be movable forward and backward along the sheet feeding mechanism, a push plate guide groove is provided in the insertion plate, and a push plate parallel to the insertion plate is provided in the push plate guide groove. is slidably provided by an actuator provided on the base end of the insertion plate, and faces the flat part of the insertion plate from a slightly inner side than the tip of the insertion plate diagonally forward so as to be openable and closable. A movable member having a movable member is protruded in an inclined manner, and the tip of the pusher plate is opposed to the inclined back surface of the movable member, and the tip of the movable member and the tip of the insertion plate are arranged so that the gap between the upper and lower sheets is By moving the insertion plate back and forth between the forward position where the object is protruded from the cylindrical body and clamps the object to be packaged, and the retracted position where the object drawn into the cylindrical body is released and escapes from the opening on the feeding direction side of the cylindrical body. A packaging device characterized by having movable upper and lower holding parts.