JPS6181910A - Method of preventing biting of article in drum packaging of article - 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] Purpose of the Invention (Field of Industrial Application) This invention provides a method for wrapping an article with a packaging material such as a packaging film or binding tape! The present invention relates to a method for preventing items from being sprayed into the sealing member in a body wrapper in which both ends of the wrapping material are held and joined by sealing members.

<Prior Art and Problems to be Solved by the Invention> Conventionally, for example, when wrapping an item using a packaging film,
A technique in which both ends of a packaging film are sandwiched and joined by a sealing member, and in order to tighten the packaging film against the item, in the case of multiple items, one of them may be lifted up to the sealing member side, or in the case of a soft item. There is a risk that the product or packaging film may be deformed toward the sealing member and get caught in the sealing member, causing damage to the product or packaging film and worsening the packaging condition.

Structure of the Invention (Means and Effects for Solving the Problems) The present invention has been made in view of this problem, and as shown in the drawings of the embodiments described later, an article W is wrapped with a packaging material F. In this state, both ends F1 and F2 of the packaging material F are sealed with a sealing member 3.
, 22 and before joining together, the sealing member 3 of the item W is
, 22 is pressed by the pressing member 33 on the opposite side to seal the sealing member 3.
This prevents the item W from moving to ゜22.

(Example) Hereinafter, an example in which the method and neck wrapping according to the present invention are embodied in body wrapping of an article using a packaging film will be described with reference to the drawings.

Regarding the fixed side seal cutting member 1 in the initial state of operation shown in FIGS. 1 and 2, a fixed seal plate 3 with a heater is fixed to the lower side of the fixed base 2, and the seal plate 3 facing the packaging part S is fixed to the lower side of the fixed base 2. The distal end portion is used as a clamping portion 3a. An arm 5 is supported on the fixed seal plate 3 by support parts 4 protruding from both left and right sides of the fixed base 2 so as to be tiltable in the vertical direction by a support shaft 6. A fixed-side nipping roller 7 is supported via a one-way clutch 8 so as to be rotatable only in the direction of arrow A in FIG. 1, and engagement rollers 9 are supported on the outside of both arms 5, respectively. Leaf springs 10 are fixed to the left and right sides of the fixed base 2, and are engaged with engagement rods 11 installed between the two arms 5 between the fixed base 2 and the clamping roller 7. And this leaf spring 1
Due to the biasing force of 0, the nip roller 7 presses the fixed seal plate 3 marked na.
It is always in contact with the clamping part 3a of. Fixed seal temporary 3
A slide plate 12 is placed on the fixed seal plate 3 between the fixed seal plate 3 and the pinch roller 7, and a saw blade 13 attached to the slide plate 12 runs along the pinch roller 7 between the fixed seal plate 3 and the pinch roller 7. It faces the abutting part between. Both left and right ends of this slide plate 12 protrude to the outside of both arms 5, and holes 12a are formed in both ends. As shown in FIGS. 2 and 8, a rod 15 is attached to the rotating shaft 14 installed above the clamping roller 7 so as to extend downwardly from the outside of both arms 5, and is fixed to the rod 15. The L7 rod 16 is inserted into the hole 12a of the slide plate 12. And Figure 11,
As shown in FIGS. 12 and 14, when the rod 15 tilts as the rotation shaft 14 rotates, the slide plate 12 and the saw blade 13 move toward and away from the clamping roller 7 via the L7 rod 16. It moves on the fixed seal plate 3.

Regarding the movable seal cutting member 17 in the initial state of operation shown in FIGS. 1 and 2, a substrate 20 is fixed to the upper end portions of the pair of left and right movable levers 18 via a bracket 19, and the substrate 20 facing the packaging section S 20 is a pushing part 21, and this pushing part 21 has a cutting groove 21a extending in the left-right direction.
is formed. Storage chamber 20a below this substrate 20
The movable seal plate 22 is supported by a compression coil spring 23 so as to be biased toward the packaging portion S, and the tip of the movable seal plate 22 adjacent to the push-in portion 21 of the substrate 20 serves as a clamping portion 22a. A support plate 24 is supported in the housing chamber 20b on the upper side of the substrate 20 so as to be biased toward the packaging part S by a compression coil spring 25, and
A movable nipping roller 26 is installed at the tip of the support plate 24 adjacent to the movable side nipping roller 26 . Note that the clamping part 22a of the movable seal plate 22 protrudes toward the packaging section S side further than the pushing part 21 of the substrate 20 and the movable clamping roller 26. Guide rods 27 are provided on both left and right sides of the board 20 so as to extend toward the packaging section S, and as shown in FIG. 27a is formed. Engagement pins 28 are provided protruding from both left and right sides of the movable seal plate 22 in proximity to the clamping portions 22a thereof.

Between the movable seal cutting member 17 and the stationary seal cutting member 1 configured in this way, a pair of left and right seals are located below the movable seal cutting member 17 in the Pi operation state shown in FIG. A support rod 30 is attached to the upper end of the movable lever 29.
is fixed so as to be tilted toward the packaging section S, and a guide roller 31 is installed between the upper ends of both support rods 30 above the movable seal cutting member 17. A foil-shaped press plate 33 is rotatably supported by a support @ 32 installed between both support rods 30 below the movable seal cutting member 17.
It is urged by a spring (not shown) in the direction of arrow B in FIG. 1 and approaches the movable seal cutting member 17.

A film winding roll 35 is attached to a mounting shaft 34 installed diagonally above the movable seal cutting member 17, and a pulley 36 fixed to this mounting shaft 34 is connected to a forward and reverse rotating electric motor 38 via a belt 37. is linked to. The packaging film F pulled out from the winding roll 35 is guided above the movable seal cutting member 17 via the intermediate roller 39 and the guide roller 31 in an initial state of operation (not shown in FIG. 1), and one end thereof F1 is held in the fixed seal cutting member 1 between the clamping portion 3a of the fixed seal plate 3 and the fixed clamping roller 7. Since the fixed side nipping roller 7 is supported via the one-way clutch 8, it does not rotate in the direction in which the one end portion F1 is pulled out (in the direction of the arrow A), and the one end portion F1 is reliably held.

A plate 41 is mounted on the rotating shaft 40 installed below the packaging section S.
is supported and is tilted above the discharge plate 42 at the initial operating position shown in FIG. In this case, the plate 41 is the 11th
As shown in the figure and FIG. 14, it tilts in the vertical direction as the rotation shaft 40 rotates.

Both movable levers 18, 29 are interlocked with a disc cam (not shown) at their lower ends, and the movable lever 18 is moved until the movable lever 29 abuts against the stopper 1.
They each approach the stationary seal cutting member 1 until they come into contact with the stationary seal cutting member 8a, and then move away again to the initial operating position shown in FIG. Fixed side seal cutting member 1
The rotating shaft 14 and the rotating shaft 40 of the plate 41 also rotate in conjunction with this disk cam. The electric motor 38 has a limit [- switch (
(not shown) for forward and reverse rotation.

Now, from the initial operating state shown in Fig. 1, first the electric motor 3
8 is the set time of the timer, and the packaging film F is rotated in the forward direction for t times, and the packaging film F is pulled out from the take-up roll 35 by a desired size corresponding to the item W. The packaging film F hangs down in a concave shape between the fixed side seal cutting member 1 and the guide roller 31, and the article W is thrown into this concave portion. And the third
As shown in the figure, when both movable levers 18, 29 move closer to the fixed seal cutting member 1, the movable seal cutting member 17, guide roller 31, and presser plate 33 also move.

Further, when both movable levers 18 and 29 move, only one of the movable levers 29 comes into contact with the stopper 29a and the guide roller 31 and presser plate 3, as shown in FIG.
3 is stopped close to the fixed side holding roller 7 of the fixed side seal cutting member 1.

If only the other movable lever 18 continues to move,
As shown in FIG. 5, the presser plate 33 is moved downward (
It is moved in the opposite direction of the arrow B) and comes into contact with the packaging film F.

In synchronization with this, the electric motor 38 is reversely rotated, the packaging film F is pulled back to the take-up roll 35, and the packaging film F
The wrapped item W is lifted upward. next,
The temporary movable seal 22 of the movable seal cutting member 17 continues to move past the upper side of the presser plate 33, and the presser plate 33 is closed.

33 is tilted roughly downward to press down the article W and prevent the article W from moving upward. At this time, the electric motor 38 continues to rotate in the reverse direction, the packaging film F is pulled back, and the item W8 is
Tighten.

Thereafter, as shown in FIGS. 6 to 8, when the movable seal temporary 22 of the movable seal cutting member 17 comes into contact with the fixed seal plate 3 of the fixed seal cutting member 1, the clamping portions 3a,
The one end F1 and the joint end F2 of the packaging film F are held between them by 22a.

The electric motor 38 is rotated in the reverse direction until just before this nipping, and the wrapping film F is continuously pulled back to tighten the item W.

Furthermore, when the movable lever 18 moves, the movable seal plate 22 of the movable seal cutting member 17 resists the bias of the compression coil spring 23 while maintaining contact with the fixed seal plate 3 of the fixed seal cutting member 1. The movable side holding roller 26 of the movable seal cutting member 17 is fixed against the biasing force a little after the fixed seal plate 3 and the temporary movable seal 22 come into contact with each other. The side seal cutting member 1 comes into contact with the fixed side holding roller 7, and the packaging film F is held between them.
The joint end F2 of is clamped. In synchronization with this clamping, the engaging slopes 27 of both guide rods 27 of the movable seal cutting member 17
a comes into contact with both engaging rollers 9 of the fixed-side seal cutting member 1, and both guide rods 27 lift both engaging rollers 9, together with the fixed-side clamping roller 7, upward against the urging force of the plate spring 10. , as shown in FIGS. 9 and 10, the pushing part 21 of the movable seal cutting member 17 bites between the clamping part 3a of the fixed seal plate 3 and the fixed clamping roller 7, and the movable lever 18 hits the stopper 18a. The movable seal cutting member 17 stops at the point of contact. In this state, the joining end F2 of the packaging film F is bent into a U-shape by the pushing part 21, and the one end F1 of the packaging film F and the joining end The portions F2 are loosely interposed in a superposed state with each other, and the joint end portion F2 of the packaging film F is sandwiched between the fixed-side nipping roller 7 and the pushing portion 21. Clamping part 3a of fixed seal plate 3
The one end F1 and the joint end F2 of the packaging film F, which are overlapped and held between the holding part 22a of the movable seal plate 22, are fused to each other by the heat of the temporary fixed seal 3 with a heater during the holding. Ru.

Next, as shown in FIGS. 11 and 12, when the rod 15 tilts as the rotation shaft 14 rotates and the slide plate 12 approaches the push-in part 21, the saw blade 13 moves into the cutting groove of the push-in part 21. 21a and the joint end F2 of the packaging film F is cut there.

Before this cutting, the receiving plate 41 is moved downward one time and the ejecting plate 42 is moved downward.
Continuous to. At the time of this cutting, the lower end of the rod 15 comes into contact with the engagement pin 28 of the movable seal plate 22, and the movable seal plate 22
resists the bias of the compression coil spring 23 and sinks into the accommodation chamber 2Oa, causing the clamping portion 3a of the fixed seal plate 3 and the movable seal plate 2
As shown in FIG.
fall on top.

Bao iX! After completion, the movable levers 18 and 29 operate in the completely opposite manner to the above-mentioned case, and the movable seal cutting member 17, the guide roller 31, and the presser plate 33 return to the initial operating state shown in FIG. 14.

Although a packaging film was used in the embodiments described above, the present invention can also be applied to a case where a tape is used instead. In this case, bind both sides of the item with tape. Further, in the above-described embodiment, the saw blade 13 is made immovable relative to the fixed seal plate 3, and the cut l17i of the pushing part 21 is
The groove 21a may be pushed into this saw blade 13.

Effects of the Invention In short, according to the present invention, both ends F1 and F2 of the packaging material F
When the sides are clamped and joined by the seal portion Ij3.22, the article W is prevented from moving toward the seal member 3.22, so there is no risk that the article W or packaging material F will be sprayed into the seal member 3.22. This prevents the product W and the packaging material E from breaking, resulting in a good packaging condition.

[Brief explanation of drawings]

Figure 1 is a schematic cross-sectional view showing the initial operating state of the product body wrapping device, Figure 2 is a strategic plan view, and Figure 3 is a strategic plan view.
Figure 4, Figure 5, Figure 6, Figure 9, Figure 11 and Figure 14 show the packaging action of the same device. 8 is a partially enlarged sectional view of FIG. 6, FIG. 10 is a partially enlarged sectional view of FIG. 9, FIG. 12 is a partially enlarged side view of FIG.
FIG. 3 is a perspective view that does not show the body-wrapped article, and FIG. 14 is a strategic cross-sectional view showing the state of the same device after wrapping. Fixed side seal cutting member 1, fixed seal plate with heater (sealing member) 3, arm 5, fixed side clamping roller (clamping member) 7, one clutch 8, engagement roller 9, slide plate 12
, saw blade (cutting blade) 13, D Rad 15, movable side seal cutting member 17, pushing part (pushing member 21, movable seal plate (sealing member) 22, movable side pinching roller (sealing member) 2
6, guide rod 27, engagement pin 28, guide roller 31,
Holding plate 33, film winding roll 35, forward/reverse rotating electric motor 38, one end F1 of packaging film F1, joint end F1
2. Goods W0 Patent applicant Fujipack System Co., Ltd. Agent
Person Patent Attorney On 1) Manabu Shiga, Director General of the Patent Office 3. Person making the amendment (name)

Claims (1)

[Claims] 1. With the product (W) wrapped in the packaging material (F), both ends (F1, F2) of the packaging material (F) are held between sealing members (3, 22) before joining. A body wrapping package for an item, characterized in that the side of the item (W) opposite the sealing member (3, 22) is pressed by a pressing member (33) to prevent movement of the item (W) to the sealing member (3, 22). A method for preventing items from getting caught.