JPH0346362B2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention provides a method for wrapping an article in a packaging material such as a packaging film or binding tape, and sandwiching both ends of the packaging material between sealing members. The present invention relates to a method for preventing items from being caught in a sealing member in a body wrapper that is joined together.

(Problems to be Solved by the Prior Art and the Invention) Conventionally, for example, when wrapping an item using a packaging film, when the packaging film is clamped and joined by sealing members at both ends, it is difficult to tighten the packaging film against the item. In the case of multiple items, one of them may lift toward the sealing member, or in the case of a soft item, it may deform toward the sealing member, causing the items or packaging film to become stuck to the sealing member. There was a risk that the product and packaging film would be damaged, resulting in poor packaging conditions.

Structure of the Invention (Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and in a state where an article W is wrapped in a packaging material F, both ends F1 of the packaging material F are , in a body wrapping package in which the F2 side is sandwiched and combined between seal members 3, 22, the packaging material F pulled out above the seal members 3, 22 is held by the seal members 3, 22 corresponding to each other.
A first step of hanging down in a concave shape from between the opposing parts, a second step of inserting the article W into the concave portion of the packaging material F, and an approach operation of the sealing members 3 and 22 in the sandwiching direction. , a presser member 33 that moves from above to below between the opposing parts of each seal member 3, 22.
Accordingly, a third step of regulating the upward movement of the article W wrapped in the packaging material F at a lower position between the opposing parts of each of the seal members 3 and 22; It consists of a fourth step of sandwiching and joining both end portions F1 and F2 of the packaging material F between opposing portions of the seal members 3 and 22 at a position above the presser member 33 that restricts movement.

(Function) When the item W is placed in the concave portion of the packaging material F that is formed to hang downward between the facing portions of the seal members 3 and 22 that correspond to each other, the seal members 3 and 22 begin to approach each other. . Then, along with this operation, the presser member 33 moves from above to below between the opposing parts of each seal member 3, 22, and each seal member 3, 2
The upward movement of the article W wrapped in the packaging material F at the lower position between the two opposing parts is restricted. Then, at the upper position of the pressing member 33, both end portions F1 and F2 of the packaging material F are connected to the respective sealing members 3 and 22.
They are sandwiched and coupled between the opposing parts.

(Example) Hereinafter, an example in which the method and apparatus according to the present invention are embodied in body wrapping of articles 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 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 both left and right sides of the fixed base 2, and are engaged with engagement rods 11 installed between the arms 5 between the fixed base 2 and the nipping roller 7. Due to the urging force of the leaf spring 10, the clamping roller 7 is always brought into contact with the clamping portion 3a of the fixed seal plate 3. Fixed seal plate 3
A slide plate 12 is placed on the fixed seal plate 3 between the clamping roller 7 and the saw blade 13 attached to the sliding plate 12 along the clamping roller 7.
is opposed to the contact portion between the fixed seal plate 3 and the clamping roller 7. 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 downward from the outside of both arms 5, and is fixed to the rod 15. L-shaped rod 16
is inserted into the hole 12a of the slide plate 12. As shown in FIGS. 11, 12, and 14, when the rod 15 tilts as the rotation shaft 14 rotates, the slide plate 12
Then, the saw blade 13 moves on the fixed seal plate 3 so as to approach and move away from the clamping roller 7.

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 ends of the pair of left and right movable levers 18 via a bracket 19, and the substrate 20 facing the packaging section S 20
The tip of the is a push-in part 21, and this push-in part 21
A cutting groove 21a extending in the left-right direction is formed in. A movable seal plate 22 is supported by a compression coil spring 23 in a storage chamber 20a on the lower side of the substrate 20 so as to be biased toward the packaging section S.
The tip portion of the movable seal plate 22 adjacent to the push-in portion 21 of No. 0 is used as a clamping portion 22a. A support plate 24 is supported in the storage chamber 20b on the upper side of the board 20 so as to be biased toward the packaging part S by a compression coil spring 25. A movable side clamping roller 26 is installed. Note that the clamping part 22a of the movable seal plate 22 protrudes further toward the packaging section S 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 substrate 20 so as to extend toward the packaging section S, and as shown in FIG. is formed. Engagement pins 28 are protrudingly provided on both left and right sides of the movable seal plate 22 in proximity to the clamping portions 22a thereof.

Movable seal cutting member 1 configured in this way
7 and the fixed seal cutting member 1, a support rod 30 is attached to the upper end of a pair of left and right movable levers 29 located below the movable seal cutting member 17 in the initial state of operation shown in FIG. A guide roller 31 is installed above the movable seal cutting member 17 between the upper portions of both support rods 30, which are fixed so as to be inclined toward the S side. A foil-shaped presser plate 33 is rotatably supported by a support shaft 32 installed between both support rods 30 below the movable seal cutting member 17, and a spring (not shown) is supported in the direction of arrow B in FIG. ) 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 in the initial state of operation shown in FIG.
Above the intermediate roller 39 and the guide roller 3
1, and its one end F1 is held between the clamping portion 3a of the fixed seal plate 3 and the fixed clamping roller 7 in the fixed seal cutting member 1. Since this fixed side clamping roller 7 is supported via the one clutch 8, this one end F
It does not rotate in the pulling direction of No. 1 (the direction of the arrow opposite to A), and the one end F is held securely.

A receiving plate 41 is supported on a rotating shaft 40 installed below the packaging section S, and is tilted upwardly at the discharge plate 42 at the initial operating position shown in FIG. This receiving plate 41 tilts in the vertical direction as the rotation shaft 40 rotates, as shown in FIGS. 11 and 14.

Both movable levers 18 and 29 are interlocked with a disk cam (not shown) at their lower ends, and the movable lever 29 cuts the fixed side seal until it comes into contact with the stopper 29a, and the rotary lever 18 cuts the fixed side seal until it comes into contact with the stopper 18a. It approaches the member 1, and then moves away again to the initial operating position shown in FIG. The rotating shaft 14 of the stationary seal cutting member 1 and the rotating shaft 40 of the receiving plate 41 also rotate in conjunction with this disk cam. The electric motor 38 is rotated in forward and reverse directions by a limit switch (not shown) that is turned on and off as the disk cam rotates.

From the initial state of operation shown in FIG. 1, the electric motor 38 is first rotated in the forward direction for the time set by the timer, 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 is fixed side seal cutting member 1 and guide roller 3
1 and hangs down in a concave shape, and the article W is thrown into this concave portion. When the movable levers 18 and 29 move closer to the fixed seal cutting member 1 as shown in FIG. 3, the movable seal cutting member 17, guide roller 31, and presser plate 33 also move.

Furthermore, when both movable levers 18 and 29 move, only one movable lever 29 comes into contact with the stopper 29a and guide roller 31 as shown in FIG.
Then, the presser plate 33 comes close to the fixed-side clamping roller 7 of the fixed-side seal cutting member 1 and stops.

When only the other movable lever 18 continues to move, as shown in FIG. ) 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 item W wrapped by the packaging film F is lifted upward. next,
The movable seal plate 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 tilted further downward to hold the item W and prevent the item W from moving upward. At this time, the electric motor 38 continues to rotate in the reverse direction, and the wrapping film F is pulled back to tighten the article W.

Thereafter, as shown in FIGS. 6 to 8, when the movable seal plate 22 of the movable seal cutting member 17 comes into contact with the fixed seal plate 3 of the fixed seal cutting member 1,
One end F1 and the joining end F2 of the packaging film F are clamped by the clamping parts 3a and 22a.
The electric motor 38 is rotated in the reverse direction until immediately before this clamping, and the wrapping film F is continued to be pulled back and the article W is tightened.

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 bias after a little delay after the fixed seal plate 3 and the movable seal plate 22 come into contact with each other. The side seal cutting member 1 comes into contact with the fixed side clamping roller 7, and the joint end portion F2 of the packaging film F is clamped therebetween. In synchronization with this clamping, the engaging slopes 27a of both guide rods 27 of the movable seal cutting member 17 are moved to the fixed seal cutting member 1.
Both guide rods 27 come into contact with both engaging rollers 9 of
lifts both engaging rollers 9 together with fixed-side clamping roller 7 upward against the urging force of leaf spring 10, and as shown in FIGS. 9 and 10, push-in portion 21 of movable-side seal cutting member 17 is fixed. Holding part 3 of seal plate 3
When the movable lever 18 comes into contact with the stopper 18a, the movable seal cutting member 17 stops. In this state, the joint end F2 of the packaging film F is connected to the pushing part 2.
1, the packaging film F is bent into a U-shape between the clamping part 3a of the fixed sealing plate 3 and the pushing part 21.
The one end portion F1 and the joining end portion F2 are interposed with each other in a superimposed state with warmth, and the joining end portion F2 of the packaging film F is held between the fixed side clamping roller 7 and the pushing portion 21. . The clamping part 3a of the fixed seal plate 3 and the clamping part 22 of the movable seal plate 22
The one end F1 and the joining end F2 of the packaging film F, which are superimposed and sandwiched between the packaging film F and the package film F, are fused to each other by the heat of the heater-equipped fixed sealing plate 3 during the sandwiching.

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
is introduced into the cutting groove 21a of the pushing part 21, and the joint end F2 of the packaging film F is cut there.
Before this cutting, the receiving plate 41 tilts downward and interlocks with the discharge plate 42. During this cutting, the lower surface of the rod 15 comes into contact with the engagement pin 28 of the movable seal plate 22, and the movable seal plate 22 sinks into the accommodation chamber 20a against the bias of the compression coil spring 23, and the fixed seal plate 3
The clamping part 3a of the movable seal plate 22 and the clamping part 22a of the movable seal plate 22
There is a slight separation between the two, and as shown in FIG. 13, the body-wrapped item W falls onto the discharge plate 42 due to its weight.

After wrapping, both movable levers 18 and 29 move the movable seal cutting member 1 in a completely opposite manner to that described above.
7, the guide roller 31 and the presser plate 33 are the first
Return to the initial state of operation shown in Figure 4.

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 the items with tape. Further, in the above-described embodiment, the saw blade 13 is made immovable relative to the fixed seal plate 3, and the cutting groove 21a of the pushing part 21 is connected to the saw blade 13.
You can also push it into the

Effects of the Invention In short, according to the present invention, both ends F of the packaging material F
1. When the F2 side is held between the seal members 3 and 22 and engaged, the holding member 33 moves from above to below between the opposing parts of the seal members 3 and 22, so that the article W is held between the opposing parts of the seal members 3 and 22. Since the article W and the packaging material F can be reliably prevented from moving between the seal members 3 and 22 and are clamped and connected at the upper position of the presser member 33, there is no possibility that the article W or the packaging material F will be caught in the seal members 3, 22. Damage to the article W and packaging material F is prevented and a good packaging condition is obtained.

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view showing the initial operating state of the product body wrapping device, Fig. 2 is a schematic plan view, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 9
11 are schematic sectional views showing the packaging action of the same device, FIG. 7 is a partially enlarged sectional view of FIG. 6, FIG. 8 is a partially enlarged side view of FIG. 6, and FIG. Fig. 12 is a partially enlarged side view of Fig. 11, Fig. 13 is a perspective view showing the product wrapped in a body wrap, and Fig. 14 is a schematic diagram showing the state after wrapping in the same device. FIG. Fixed side seal cutting member...1, Fixed seal plate with heater (seal 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, Rod...1
5. Movable side seal cutting member...17, Pushing part (pushing member)...21, Movable seal plate (sealing member)...22, Movable side holding roller (holding member)
...26, Guide rod ...27, Engagement pin ...2
8, Guide roller...31, Holding plate...33, Film take-up roll...35, Forward/reverse rotation electric motor...38, Wrapping film F, One end F...1, Joining end F...2, Item...W.

Claims (1)

[Scope of Claims] 1. With the product W wrapped in the packaging material F, both ends F1 and F2 of the packaging material F are covered with sealing members 3,
22, the wrapping material F pulled out above the sealing members 3 and 22 is hung down in a concave shape from between the facing portions of the corresponding sealing members 3 and 22; , a second step of putting the item W into the concave portion of the packaging material F, and as the sealing members 3 and 22 approach in the sandwiching direction, from above to below between the facing portions of each of the sealing members 3 and 22; a third step of restricting upward movement of the article W wrapped in the packaging material F at a lower position between the facing portions of each of the seal members 3 and 22 by a moving presser member 33; Both ends F1,
A method for preventing an item from being caught in body wrapping of an item, comprising a fourth step of sandwiching and joining the F2 side between opposing parts of the seal members 3 and 22.