JPH0635101U - Film coating equipment - Google Patents

Abstract

(57) [Summary] [Structure] A film coating mechanism (1) for covering the top surface of a stretch-wrapped object (4) with a film (6) having a size sufficiently larger than the top surface, and a film covering mechanism (1). A film coating apparatus provided with a mechanism (2) for horizontally binding a portion (6) hanging from the top surface of a package to the four side surfaces thereof with a tape-shaped stretch film (8). [Effect] The top surface of the object to be packaged can be covered with the top film, and at the same time, the film hanging down from the side surface of the object to be packaged can be bound with a tape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a film coating device, and more specifically, a top surface of a stretch-wrapped packaged object is covered with a film having a size sufficiently larger than the top surface, and the film is hung from the top surface of the packaged object to the four side surfaces thereof. The present invention relates to a film coating device having a function of binding portions horizontally with a tape-shaped stretch film.

[0002]

[Prior art]

 Prior to stretch-wrapping an article to be packaged placed on a pallet, a top surface of the article is covered with a film having a size sufficiently larger than the top surface (hereinafter referred to as a top film). For example, Japanese Patent Laid-Open No. 175511/1982 discloses two types of film coating devices. With these devices, the top surface covered with a top film can be wrapped with a spiral or full-web type stretch wrapping machine from the outside of the edge of the top film that hangs down on the side surface of the top film. It was shipped with stretch film wrapped around the sides with tension applied.

[0003]

[Problems to be solved by the device]

 However, such conventional packaging also has some problems. First, when a stretch package as described above is loaded in the rain, the edge of the top film, which covers the top surface of the package, enters the inside of the stretch film around the top surface, so rainwater tops. It was often soaked between the film and stretch film to wet the packaged item. As a countermeasure, after stretch-wrapping the side surface of the packaged object, cover the top surface with a top film having a size sufficiently larger than the size of the top surface, and tape the portion of the film that hangs down on the side surface of the packaged object. And so on.

On the other hand, an air layer is likely to be formed between the top surface of the article to be packaged and the top film, and the top film may be misaligned between the film coating device and the binding machine, or the top film may be blown up by the wind. It sometimes happened that it went up and interrupted the continuous work. The present invention has been made in view of such a situation, and its problem is to cover the top surface of the packaged object with a top film at the same time in order to prevent the top film from slipping and curling up in the coating process. It is an object of the present invention to provide a film coating device capable of binding a portion of a film hung down on the side surface of an object to be packaged with a tape (of a stretch film).

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the film coating apparatus of the present invention includes a conveyor for moving an article to be packaged, a gantry provided adjacent to one side edge of the conveyor, and a pedestal attached to the gantry so as to be vertically movable. An arm protruding above the conveyor, a pair of support rollers mounted on the arm for supporting film winding, and a pair of rollers provided below the support roller and rotating at the same peripheral speed as the speed of the conveyor. And a film cutting mechanism in which a hot wire knife and a backup member are attached to the tip of an oscillating lever that is rotatably connected in one direction to the shafts of the film feeding roller and the pair of feeding rollers via a cam clutch. The film covering portion is provided adjacent to the front side of the film covering portion in the traveling direction of the object to be packaged, at symmetrical positions on both sides of the conveyor, and Each of them is provided with a tape feeding device provided with a tension applying mechanism and a tape feeding device adjacent to the front of the tape feeding device in the traveling direction of the package, and moves forward and backward in opposite directions from symmetrical positions on both sides of the conveyor. Install two heat-sealing heaters and a heating wire knife between these heaters at appropriate intervals on one of the pair of holders, and a backup member for pressing the film on the heaters on the other holder. And a tape bundling section having a tape connecting device.

Further, since the film covering the top surface of the packaged object is closely adhered to the top surface, the top surface of the packaged object is provided adjacent to the forward direction of the holder moving forward and backward in the traveling direction of the packaged object. Install an air blower that blows air over almost the entire width.

[0007]

[Action]

 In the film coating apparatus of the present invention, a tape binding portion is provided adjacent to the front of the film coating portion in the traveling direction of the packaged object, and the top film is repeated at the same speed as the moving speed of the packaged object. By cutting the film, the top film is cut into a predetermined size by the film covering part to cover the top surface of the packaged object, and at the same time, the tape wrapping part hangs down from the covered part to the side surface of the packaged object. The effect of binding the taped parts with tape is achieved. In addition, by blowing air over the entire width of the top surface of the package in the post process of the tape binding part (if necessary), the air between the top film and the top surface of the package is expelled. The effect of bringing the top film into close contact with the top surface of the packaged object is achieved.

[0008]

【Example】

 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto. 1 is a schematic side view of a film coating apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an enlarged view of an essential part of FIG. 2 showing a state immediately before a tape connecting apparatus connects tapes. Show. 4 to 6 are schematic side views for explaining the operation of the film coating portion of the apparatus of this embodiment, and each drawing shows the state at each stage of the operation. 7 to 11 are schematic plan views for explaining the operation of the tape binding portion of the apparatus of this embodiment, and each drawing shows the state at each stage of the operation. FIG. 12 is a partial plan view of a tape connecting device according to another embodiment of the present invention.

In the figure, reference numeral 1 is a film covering portion, 2 is a tape binding portion, 3 is a chain conveyor, 4 is an object to be wrapped, 5 is a top film winding, 6 is a top film, and 7 is a (stretch film). Tape winding, 8 is a (stretch film) tape, 9a and 9b are tape joints, 10 is an air blower, 11 is a post, 12 is a chain, 13 is an arm, 14a and 14b are support rollers, 15a and 15b Is a film feeding roller, 16a and 16b are swing levers, 16c is a spring, 17 is a film cutting device, 18 is a hot wire knife, 19 is an anvil, 20 is a guide roller, 21 is a tape feeding device, 22 is a tape connecting device, and 23a. , 23b are tape unwinding mechanisms, 24a, 24b are brake rollers, 25 is an endless chain, 26a, 26b are A holder, 27a and 27b are heat-sealing heaters, 28 is a hot wire knife, 29 is an anvil, 31 is a (conveyor) frame, 32 is an endless chain, 33 is a drive motor, and 34a and 34b are beam switches.

With reference to FIGS. 1 to 3, the film coating apparatus of the present embodiment includes a chain conveyor 3 for moving an article to be packaged 4 and a film coating section 1 for coating a top surface of the article to be packaged with a top film 6. It comprises a tape binding portion 2 for binding the portion of the top film 6 hanging down on the side surface of the article 4 to be wrapped with a tape 8 of a stretch film.

The film coating unit 1 is moved up and down by a gantry 11 provided adjacent to one side edge of the chain conveyor 3 and a chain 12 driven by a motor (not shown) along the gantry 11. A pair of support rollers 14a and 14b configured to support the top film take-up 4 and a pair of film feeding rollers 15a driven by a motor (not shown) under the arm 13 are provided on the arm 13. , 15b are attached. A friction brake (not shown) is attached to one of the shafts of the support rollers 14a and 14b to appropriately brake the rotation of the top film winding 5. In addition, the rocking levers 16a and 16b are connected to the shafts of the film feeding rollers 15a and 15b through respective cam gears (not shown) which are meshed with the respective gears (not shown). It is connected so that it can rotate freely. Further, a heat ray knife 18 is attached to the tip of the swing lever 16a, and an anvil 19 is attached to the tip of the swing lever 16b. The heat ray knife 18 and the anvil 19 constitute a film cutting device 17. . The swing levers 16a and 16b are normally opened left and right by a pulling spring 16c.

The tape bundling portion 2 is provided with a pair of tape supply devices 21 provided at the front of the arm 13 in the traveling direction of the packaged object and at symmetrical positions on both sides of the chain conveyor 3, and the tape packager 2 to be packaged. The tape connecting device 22 is provided adjacent to the front side of the object traveling direction. The pair of tape feeding devices 21 respectively apply tension to the tape 8 wound from the tape winding mechanism 23a, 23b for mounting the tape winding 7 of the stretch film, the pair of guide rollers 20 and the tape winding 7. Brake rollers 24a and 24b for attaching the tape, and the tape connecting device 22 is an endless chain 25 which is rotated by a motor (not shown) and holders 26a and 26b which are attached at symmetrical positions on the chain. , Two heat-sealing heaters 27a and 27b mounted on the holder 26a at appropriate intervals, a heat ray knife 28 provided between these heaters, and an anvil mounted on the holder 26b. And 29. (See Figure 3)

Further, in the apparatus of this embodiment, the air blower 10 is provided in the tape binding portion 2 in the traveling direction of the packaged object. The chain conveyor 3 includes a frame 31, a pair of endless chains 32, a drive motor 33, and beam switches 34a and 34b mounted on the frame 1 along the conveyor.

Next, the operation of the apparatus of this embodiment will be described mainly with reference to FIGS. 4 to 10. In the apparatus of this embodiment, as shown in FIG. 1, the top film take-up device 5 is placed on the support rollers 14a and 14b provided on the arm 13 of the film covering portion 1 and the take-up film is taken up before starting as shown in FIG. The top film 6 unwound from the above is sandwiched between the film feeding rollers 15a and 15b, and from there, preliminarily fed out by a size reaching an appropriate height on the side surface of the packaged object (as shown in FIG. 1). deep. As described above, the friction brake attached to either one of the support rollers 14a and 14b brakes the rotation of the top film take-up 5. The arm 13 moves up and down along the gantry 11 by a chain 12 driven by a motor (not shown). This is for facilitating the exchange of the top film winding 5 and for the film coating portion 1 This is because the height of the tape binding portion 2 is adjusted according to the height of the article to be packaged.

In the apparatus of the present embodiment, the chain conveyor 3 is started in response to a signal to carry in the article to be packaged from an upstream device such as a palletizer, the article to be packaged 4 is received on the conveyor, and the film coating unit 1 Transfer to. As shown in FIG. 4, when the beam switch 34a detects the tip of the article 4 to be packaged, the film feeding rollers 15a and 15b of the film coating portion 1 rotate in the direction of the arrow, and the same speed as the feeding speed of the chain conveyor 3 Then, the top film is fed out, and the top surface of the article to be packaged 4 is started to be covered with the top film 6. This state is shown in FIGS. The swing arms 16a and 16b are connected to the shafts of the film feeding rollers 15a and 15b through a cam clutch so that the film feeding rollers 15a and 15b do not swing when the film is fed, and when they are reversed. Only rock.

When the rear end of the article to be packaged 4 passes in front of the beam switch 34a, the tape binding process is started. (The tape binding process will be described later.) When the rear end of the article to be packaged 4 passes in front of the beam switch 34a, the chain conveyor 3 stops. Next, the film feeding rollers 15a and 15b reversely rotate, and the rocking levers 16a and 16b rock as shown in FIG. 6, and between the hot wire knife 18 and the anvil 19 which are respectively attached to the tips of the levers. Cut the film by sandwiching the top film 6. When the cutting of the top film is completed, the chain conveyor 3 is started again, and the article 4 to be packaged is started to be sent forward.

In the tape binding portion 2, as shown in FIG. 7, the tape 8 unwound from the pair of stretch film tape winding 7 is a pair of left and right guide rollers 20 and a brake for applying tension to the tape. The end portions of the chain conveyor 3 are heat-sealed and connected (9a) at substantially the center of the chain conveyor 3 via the rollers 24a and 24b, and as shown in FIG. It is attached from the front side of the package to the left and right sides. When the rear end of the article to be packaged 4 passes in front of the beam switch 34b, the chain conveyor 3 stops again. Next, the endless chain 25 is driven by a motor (not shown) and rotates in the direction of the arrow in FIG. 2, so that the holders 26a and 26b attached to the chain move in the directions opposite to each other as shown in FIG. After applying the tape 8 to the rear side surface of the article 4 to be packaged, the tape 8 is sandwiched between both holders as shown in FIG. Next, the heat sealers 27a and 27b attached to the holder 26a and the heat wire cutter 28 are energized, and the tape 8 is heat-sealed and connected between the heat sealers 27a and 27b and the anvil 29 attached to the holder 26b. At the same time, the middle of these joints is cut by the hot wire cutter 28. Next, as shown in FIG. 11, the chain 25 rotates in the opposite direction, and the holders 26a and 26b are returned to the origin.

In this way, the top surface of the article to be packaged 4 is covered with the top film 6, and the portion of the film that hangs down on the side surface of the article to be packaged is bound with the tape 8 of the stretch film. A tape seam 9b is formed on the rear side surface of the object to be packaged 4, and a tape seam 9a is formed on the tape 8 of the stretch film that extends between the left and right tape supply devices 21 in the tape binding unit 2. To be done.

In the tape connecting device 22, an air cylinder may be used as a means for sliding the holders 26a and 26b, and as shown in FIG. 4 When the guide rollers 20a are attached to the front and rear of the traveling direction, the friction with the tape 8 can be reduced when the holder slides. Further, the air blower 10 blows air from above the top film 6 covering the top surface of the object to be packaged 4, and expels the air between the object to be packaged 4 and the top film 6 to the rear in the traveling direction of the object to be packaged. The top film 6 is brought into close contact with the top surface of the article to be packaged 4 before it is bound with.

[0020]

[Effect of device]

 As described above in detail, according to the present invention, in order to prevent the top film from slipping or curling in the coating process, the top surface of the packaged object is covered with the top film and the film is simultaneously packaged. It is possible to provide a film coating apparatus capable of binding a portion hanging down on the side surface of an object with a tape of a stretch film.

[Brief description of drawings]

FIG. 1 is a schematic side view of a film coating apparatus according to an embodiment of the present invention.

2 is a plan view of the device of FIG. 1. FIG.

FIG. 3 is an enlarged view of a main part of the apparatus shown in FIG.

FIG. 4 is a schematic side view for explaining the operation of the film coating portion of the apparatus of FIG.

5 is a schematic plan view for explaining the operation of the film coating portion of the apparatus of FIG. 1 subsequent to FIG.

6 is a schematic plan view for explaining the operation of the film coating portion of the apparatus of FIG. 1 subsequent to FIG.

FIG. 7 is a schematic plan view for explaining the operation of the tape binding portion of the apparatus shown in FIG.

8 is a schematic plan view for explaining the operation of the tape binding portion of the apparatus of FIG. 1 subsequent to FIG.

9 is a schematic plan view for explaining the operation of the tape binding portion of the apparatus of FIG. 1 subsequent to FIG.

10 is a schematic plan view for explaining the operation of the tape binding portion of the apparatus of FIG. 1 subsequent to FIG.

11 is a schematic plan view for explaining the operation of the tape binding portion of the apparatus of FIG. 1 following FIG.

FIG. 12 is a partial plan view of a tape connecting device according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Film coating part, 2 ... Tape binding part, 3 ... Chain conveyor, 4 ... Wrapping object, 5 ... Top film winding,
6 ... Top film, 7 ... Tape winding, 8 ... Tape, 9
a, 9b ... tape seam, 10 ... air blower, 11
… Posts, 12 ... Chains, 13 ... Arms, 14a, 14
b ... Support roller, 15a, 15b ... Film feeding roller, 16a, 16b ... Swing lever, 16c ... Spring, 17 ... Film cutting device, 18 ... Hot wire knife,
19 ... Anvil, 20, 20a ... Guide roller, 21
... tape supply device, 22 ... tape connecting device, 23a, 2
3b ... Tape unwinding mechanism, 24a, 24b ... Brake roller, 25 ... Endless chain, 26a, 26b ... Holder, 27a, 27b ... Heat seal heater, 2
8 ... Heat knife, 29 ... Anvil, 31 ... (Conveyor) frame, 32 ... (Endless) chain, 33 ...
Motor, 34a, 34b ... Beam switch

Claims (2)

[Scope of utility model registration request] 1. A conveyor for moving an article to be packaged, a gantry provided adjacent to one side edge of the conveyor, an arm attached to the gantry so as to be vertically movable, and protruding above the conveyor. A pair of supporting rollers mounted on the arm and supporting film winding, a pair of film feeding rollers provided below the supporting rollers and rotating at the same peripheral speed as the speed of the conveyor, and a pair of these feeding rollers. A film covering portion having a film cutting mechanism in which a hot wire knife and a backup member are attached to the tip of an oscillating lever rotatably connected in one direction to a shaft via a cam clutch, and the film covering portion is packaged. Adjacent to the front in the direction of travel of the article, provided at symmetrical positions on both sides of the conveyor, and a tape supply device provided with a tension applying mechanism, respectively, and Two tape holders are provided adjacent to each other on the front side of the tape feeding device in the traveling direction of the package, and are moved forward and backward from the symmetrical positions on both sides of the conveyor in opposite directions. It is composed of a heater for heat sealing and a tape binding portion having a tape connecting device in which a hot wire knife is attached between these heaters and a backup member for pressing a film against the heater is attached to the other holder. Film coating equipment. 2. An air blower, which blows air over substantially the entire width of the top surface of the package, is attached adjacent to the front side of the holder that moves forward and backward in the traveling direction of the package.
The film coating apparatus described.