JPH0472109A - Device for binding lumpy article - Google Patents

Abstract

PURPOSE:To securely place and hold a film at a specified position and facilitate packing of a wrapped article, by cutting the film part held by a guide roller, a film-pressing means, and a couple of upper and lower film setter respectively. CONSTITUTION:A film 21 wound on a roll 22 is wound off forward by a specified length through between a guide rollers 133a, 133b, and a film pressing means 131 and the first film setters 135a, 135b. Next, the film part between the guide roller and the first film setter is cut by a cutting blade 143. In this way, the cut film is laid on the film supporter 10 in the condition that the rear part of the film is supported by the first film setter. The wrapped article is fed on a receiver while the middle part of the film is pulled inward from the upper part of the film laid on the film supporter to the lower part. Next, a couple constriction members are driven to the approach direction by an appropriate driving system to constrict the film end by a constriction member and the constricted part is bundled by a heater or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a packaging device for bulk packages, and particularly to a packaging device for bulk packages suitable for packaging head vegetables such as lettuce.

(Prior Art) Conventionally, as a packaging device for head vegetables such as lettuce, for example, a vegetable receiver is provided at the lower part of a support plate having a guide hole to receive the head vegetables from the guide hole, and a vegetable receiver is provided above the vegetable receiver. A film squeezing mechanism for squeezing the packaging film is provided in the section, a synthetic resin film is stretched over the support plate, and the head vegetables are fed down through the guide hole onto the vegetable receiver, and the film is A supply method has been proposed in which the film is squeezed by a squeezing mechanism to package head vegetables and the film is heat-sealed.

(Problems to be Solved by the Invention) As mentioned above, in the conventional packaging device, a pre-formed rectangular packaging film is simply stretched over the guide hole of the support plate, so the operator has to The film had to be rolled out over the guide hole each time, which was not only poor in workability, but also caused problems such as the film being rolled out out of its proper position, or sometimes being blown away by the wind, and having to start over again. .

In addition, it is difficult to wrap round packages such as head vegetables with rectangular film, and the edges of the film cannot be narrowed down accurately, which results in the use of larger film than necessary. , there was a problem that it was wasted.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and its purpose is to provide a packaging device for bulk packages that can accurately and efficiently support the film and easily narrow down the edges of the film. It is to serve as an apprentice.

(Means for Solving the Problems) A packaging device for bulk packages according to the present invention is provided so that the bulk packages can pass through, and supports a film for packaging the packages at a portion through which the packages pass. a film supporting part, and a receiver disposed below the film supported by the film supporting part, which receives a package supplied from above the film through the film that is drawn in when the package is supplied. between the film supporting section and the receiver, the film support section is provided on both sides with a space above the receiver in between so as to be movable toward and away from each other, and the opposing edge portions are provided so as to be able to be received on the receiver when approached. and a film bundling section having a pair of squeezing members for squeezing the ends of the film extending upwardly of the packaged package, wherein the film support section is provided with a film bundle around which a long film is wound. A roll support base that rotatably supports the roll, and a guide roller and a guide roller disposed near the base of the roll support base to horizontally pull out the film pulled out from the roll supported by the roll support base above the film binding section. a means for pressing the film onto the guide roller; a pair of first film pressers disposed further in front of the guide roller in the film pull-out direction for pinching and pressing the drawn-out film from above and below; the guide roller and the first film press; It is characterized by comprising a cutting blade that cuts the film between the film and the body.

A second film presser is disposed above the film bundling part so as to be rotatable in the front-rear direction, and has a second film presser on the front end that clamps the front end of the pulled-out film from above and below, and the cutting blade is fixed on the rear end. It is preferable to provide a film cutting frame that is

Further, the guide roller and the film pressing means are disposed at the lower part of a rotary arm that is rotatably provided on the roll support base above the cutting blade in the front and back direction, and the rotary arm is connected to the guide roller. Further, the film pressing means is provided so as to be rotatable between a stop position in front of the cutting blade and a stop position behind the cutting blade.

The roll support stand and the film cutting frame are arranged on a slide stand fixed to a base so as to be slidable in the front and rear directions,
It is also advantageous to provide the front side frame portion of the film cutting frame to which the second film presser is fixed so as to be movable back and forth relative to the rear side to which the cutting blade is fixed.

Further, the film supporting part is cut by the cutting blade, and the film whose rear end is held between the first film holding members is cut so that one diagonal line thereof faces the direction in which the pair of aperture members of the film binding part approach and separate. It is preferable to support it.

(Operation) The film wound around the roll is pulled forward by a required length between the guide roller and the film pressing means and through the first film presser.

Next, the cutting blade cuts the film portion between the guide roller and the first film presser.

Thus, the cut film can be stretched on the film support section with its rear end held between the first film pressers.

The package is fed onto the receiver while drawing the central part of the film downward from above the film stretched on the film support.

Next, a pair of aperture members are driven in the approaching direction by an appropriate drive unit, the end portion of the film is narrowed by the aperture member, and this narrowed portion is bound by a heater or the like.

At the next time of packaging, the film can be cut in the same manner as described above by bending the end portion of the film that has been pinched by the guide roller and the film pressing means and pulling it forward through the first film presser.

By providing the guide roller and the film pressing means on a rotating arm that is rotatable in the front and back direction, the guide roller and the film pressing means can be positioned in front of the cutting blade when setting the film to be pulled out. The ends of the film sandwiched between these can be safely pulled forward.

A second film presser is provided at the front end of the film cutting frame, which is rotatably provided in the front and rear directions above the film binding section, and the cutting blade is provided at the rear end, so that the front end of the film pulled out forward is cut into the second film holder. When the front end of the film cutting frame 1 is pushed down while the film is being held between the film pressers 2 and 2, the cutting blade on the rear end side moves upward and the film is cut at the required location. Therefore, in this case, the cut film can be stretched on the film support section with its front end and rear end held between the second and first film pressers.

To change the film cutting length, the position of the second film presser may be adjusted. Furthermore, in order to align the center of the film with the center of the apparatus, the slide table may be moved and the position of the cutting blade relative to the base may also be moved.

Set the film support direction at the film support part to 1 of the film.
By setting the two diagonal lines to face the direction of approach and separation of the aperture members at the film binding section, the edges of the opposing aperture members narrow the corners of the film (long ears from the center), making it easier to narrow the film. can be done.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a side view of the packaging device.

10 is a film support part, 12 is a pushing part, 14 is a film binding part, 16 is a bucket support part (FIG. 2), 18 is a drive part, and 20 is a discharge part.

First, the film binding section 14 will be explained with reference to FIGS. 2 to 8.

As clearly shown in FIG. 2, the film binding section 14 includes, in order from the top, a top plate 27 and a pair of upper aperture plates (aperture members) 28a.
, 28b, a pair of heaters 30a, 30b fixed to a pair of slide bodies 36a, 36b, respectively, and a pair of lower aperture plates (aperture members) 31a, 31b. Further, a pair of horizontal aperture plates 32a, 32b are provided at approximately the same height as the heaters 30a, 30b.

A hole 33 through which the package 23 can pass is formed in the center of the top plate 27, and projecting pieces 34 are protruded from each of the four sides of the film 21 to be supplied. ing. Note that the package 23 can pass downward through the space between the tips of the projecting pieces 34. The projecting piece 34 is provided so that its projecting length can be adjusted to accommodate packages 23 of various sizes.

The pair of upper aperture plates 28a and 28b are provided directly below the top plate 27 with a hole 33 in the top plate 27 in between, so as to be able to move toward and away from each other. V-shaped narrowing recesses 35a and 35b (FIG. 3) whose bottoms are flat and have a slight length (approximately 3 cm) are provided at opposing parts of the pair of upper drawing plates 28a and 28b. When the opposing parts of the upper aperture plates 28a and 28b are overlapped and driven in the approaching direction, the space formed by both the aperture recesses 35a and 35b is pinched and moved until it becomes a thin slint-like shape. , the edge of the film 21 is narrowed down.

A pair of heaters 30a, 30b are slide bodies 36a, 36
b (Figs. 4 and 5).

Driving force is transmitted to the slide bodies 36a, 36b from a drive unit to be described later, and in conjunction with the movement of the slide bodies 36a, 36b, a pair of upper aperture plates 28a, 28b, a lower aperture plate, Boards 31a, 31b
, the lateral aperture plates 32a and 32b are driven.

The slide bodies 36a and 36b move while being guided by rails 37a and 37b fixed on the base, respectively. In FIG. 3, reference numeral 38 denotes a rotating shaft, and the driving force from the driving section is transmitted to a sprocket 39 provided at one end, so that the rotating shaft rotates back and forth about the axis. A sprocket 40a is mounted on the rotating shaft 38.
, 40b are fixed, and these sprockets 40a, 40b
and sprockets 41a and 41b arranged on the other side of the base.
Chains 42a and 42b are passed between the chains 42a and 42b, and one slide body 36 is attached to the lower running portion of each chain 42a and 42b.
b (FIG. 4), and the other slide body 36a is fixed to the upper running portion (FIG. 5). Therefore, in FIG. 3, when the rotation shaft 38 rotates clockwise, both slide bodies 36δ and 36b move toward each other, and when rotated in the opposite direction, they move away from each other.

As shown in FIG. 3, one slide body 36b is provided with a long hole 43 that is long in the direction of movement thereof. A pin 44 provided on the lower surface of one of the upper aperture plates 28b is fitted into the elongated hole 43, and a coil spring 46 is hooked between this pin 44 and a pin 45 provided on one slide body 36b. Therefore, one upper aperture plate 28b is biased toward the upper left in FIG. 3 (towards the center of the apparatus) with respect to one slide body 36b, and its movement is restricted by the pin 44 engaging with the end of the elongated hole 43. has been done. Therefore, one upper Hri board 28b
is connected to one slide body 36b via pins 44, 45 and coil springs 46, and one slide body 36b
It moves along with the movement of. Reference numeral 47 denotes a stopper pin, and the movement of the one upper aperture plate 28b toward the center of the device is stopped by abutting the upright piece 4 at the end of one of the upper aperture plates 28b on the head thereof. Note that one slide body 36b can move further toward the center of the device within the range of the elongated hole 43.

The other upper aperture plate 28a has a long hole 50 that is long in the direction of movement.
is provided, and a pin 51 provided on the other slide body 36a is fitted into this long hole 50. And this pin 5
1 and a pin 52 provided on the other upper aperture plate 28a.
The other upper aperture plate 28a is urged to the right in FIG. 3 until the bottle 51 comes into contact with one end of the elongated hole 50. Therefore, the other upper aperture plate 28a also connects to the other slide body 36 via the bins 51, 52 and the coil spring 53.
a, and moves along with the movement of the slide body 36a. Reference numeral 54 denotes a stopper, which is brought into contact with the end of the other upper aperture plate 28a to stop its movement toward the center of the apparatus. Even if the other upper aperture plate 28a stops, the other slide body 36a can still move toward the center of the device within the range of the elongated hole 50. Reference numeral 56 denotes a micro switch for stopping the drive motor of the drive unit, which will be described later. When a dog 55 provided on the slide body 28a presses the micro switch 56, the drive motor is stopped.

Next, the lower aperture plates 31a and 31b will be explained.

As shown in FIGS. 4 and 5, the lower aperture plates 31a and 31b are formed between L-shaped guides 58a and 58b provided on the lower surfaces of the slide bodies 36a and 36b, respectively, and members 59a and 59b. By having both side edges guided in the space, it is provided so as to be slidable in the same direction as the moving direction of the slide bodies 36a, 36b with respect to the slide bodies 36a, 36b.

And as clearly shown in FIG. 6, the other slide body 36a
A coil spring 61 is passed between m' and f between the bottle 6o provided on the bottom and the protrusion of the other lower aperture plate 31a. 62 is biased toward the upper right in FIG. 6 until a stopper 63 protruding from the upper surface of the lower aperture plate 31a comes into contact with the lower aperture plate 31a. At this time, the end portion of the other lower aperture plate 31a on the side of the center of the device is set to protrude further toward the center of the device than the heater surface of the heater 30a.

One lower aperture plate 31b is also provided in the same manner as described above for one slide body 36b.

64a and 64b are stoppers for the lower aperture plates 31a and 31b. The lower aperture plates 31a, 31b are stoppers 64a, 64
Even if the slide bodies 36a, 36b and the heaters 30a, 30b are stopped by contacting the spring 61, the slide bodies 36a, 36b and the heaters 30a, 30b can move against the tensile force of the spring 61.

In FIG. 2, FIG. 4, and FIG. 5, 66a and 66b are drawn rubber (elastic string-like bodies), and the slide body 36a,
It is provided at the tip of 36b on the center side of the device. The aperture rubbers 66a, 66b are located approximately parallel to the tip edges of the lower aperture plates 31a, 31b, and closer to the center of the device than the tip edges,
Moreover, it is located below the lower surfaces of the lower aperture plates 31a and 31. 57a and 67b are the hanging fittings.

Next, the horizontal aperture plates 32a and 32b will be explained.

The horizontal aperture plates 32a and 32b are for squeezing the film 21 in a direction perpendicular to the aperture directions of the upper aperture plates 28a and 28b and the lower aperture plates 31a and 31b, and as clearly shown in FIGS. 7 and 8, Rotating arms 70a, 70 are provided on the base to be swingable in a horizontal plane about shafts 68a, 68b.
When the rotary arms 70a and 70b are rotated in a direction in which the two ends approach each other, the ends of the film are narrowed from the lateral direction.

Each of the lateral aperture plates 32a and 32b has two lateral aperture plates spaced apart from each other in the upper and lower directions, and the upper lateral aperture plate is formed into a width line and serves as a heat seal portion for the heaters 30a and 30b. The area directly above the area is narrowed down, and the horizontal narrowing plate below is the heater 30a, 3.
Narrow down to just below 0b. The reason why the upper horizontal aperture plate is formed on the width line is that after the upper horizontal aperture plate narrows the width, the heater 3
This is to prevent 0a and 30b from causing any harm as they move forward due to heat sole.

A toggle mechanism is employed as an example of an opening/closing mechanism for the horizontal aperture plates 32a, 32b. That is, as shown in FIGS. 7 and 8, links 7 are provided at the other ends of the rotating arms 70a and 70b, respectively.
1a, one end of the link 71b is pivoted, and the second link 71a
, 71b is pivoted by a shaft 74 to a movable body 73 slidably provided on a shaft 72 provided on a base.

The movable body 73 is normally moved by a spring 75 to rotate arms 70a, 70. The leading edge of the image b is biased in the opening direction. Further, one end of a wire 76 is fixed to the movable body 73,
When the wire 76 is pulled against the biasing force of the spring 75, the movable body 73 slides to the right in FIG. 7, and the horizontal aperture plates 32a and 32b are closed.

Therefore, when both slide bodies 36a, 36b move in the approaching direction as described above, the upper aperture plates 28a, 28b constrict the upper side of the film edge with their concave recesses 35a, 35b, and a little later, the lower aperture Boards 31a, 31b
narrows down its lower side.

Before the ends of the film are completely squeezed by the upper and lower squeeze plates, the squeeze rubbers 66a and 66b come into contact with the upper part of the package 23 with the film 21 interposed therebetween to squeeze the ends of the film. Further, the lateral aperture plates 32a and 32b are driven in the manner described above, and the portion of the film that is being constricted by the upper and lower aperture plates is constricted from the lateral direction, and the length of the constriction portion is appropriately adjusted.

The upper and lower aperture plates 31 come into contact with the corresponding stoppers as described above and stop, but the slide bodies 36a and 36b
still moves toward the center of the device, and the upper aperture plates 28a, 28b
The constricted portion of the film between the aperture position and the aperture positions of the lower aperture plates 31a and 31b is heat-sealed by heaters 30a and 30b.

Next, the bucket support section 16 will be explained.

As clearly shown in FIG. 2, the bucket (receptor) 24 is mounted on a support part 80 that is vertically movably guided to the base, and a product receiving box 81 is mounted on the support part 80.
It is supported so that it can be tilted in any direction.

In other words, the support stand 8 fixed to the upper part of the support part 80
A bucket 24 is fixed to the upper surface of a swinging body 84 which is swingably provided in the direction of the product receiving box 81 about a shaft 83 at the bottom of the product receiving box 81 . The rocking body 84 is urged to rotate in the direction opposite to the product receiving box 81 about the shaft 83 by a spring 85 disposed between the rocking body 84 and the support base 82. The other ends of links 87 and 88, whose one end is pivoted by a shaft 86, are pivoted between the base 82 and the bucket. 24 is horizontal. Further, one link 87 has a U-shaped cross section, and the other link 88 is pivoted by a shaft 86 at a position where it enters the end of one link 87. Even when the weight of bucket 23 is applied, the U-shaped end surface is locked to the other link 88, so that links 87 and 88 do not bend, and bucket 24 maintains a horizontal state. One end of a wire 89 is fixed to one end of the shaft 86 via a spring 96, and as the wire 89 is pulled to the right in FIG. The bucket 24 is bent in the direction of the product receiving box 81. The wire 89 is operated by the drive section 18 as described later. The spring 96 serves as a relief when the wire 89 is pulled too much, and prevents damage to various parts.

The support part 80 is pivotally attached to the other end of a lift rod 91 whose one end is rotatably attached to the base via a link 90, and a tension spring 92 is connected to the middle part of the lift rod 91. , the support portion 80 is always urged to move upward. The tensile force of the tension spring 92 is
Adjust accordingly by subtracting 3. 94 is its operating knob (Fig. 1).

Reference numeral 95 denotes an air action, in which the piston rod of a piston having a valve mechanism is connected to a lift rod 91, and the downward movement of the support part 80 is free, and the upward movement of the support part 80 is caused by the tension of the tension spring 92. Even when the force is increased,
It acts as a kunosoyeon so that it does not move up to the 9th grade.

The support part 80 is configured such that its vertical movement is regulated by a universal key mechanism disposed in the middle part 2 of the support part 80. That is, the support part 80 is inserted into the hole of the hanging plate 97,98 which is swingably provided on one end side of the base, and each hanging plate 97
．． Reference numeral 98 denotes a guide plate 99 that guides the support portion 8o in a vertically movable manner.
．． Spring 101 and 102 interposed between 100 and 100
are biased in opposite directions to each other, and the edge of the hole is hooked to the support portion 80, so that the support portion 80 is attached to the hook plate 97.
Its downward movement is regulated by the latching plate 98, and its upward movement is regulated by the latching plate 98. At the other end of each latching plate 97.98 is a wire 103.1.
04 is connected, and the latching plate 97.98 is unlatched by pulling the wire I03.104 against the biasing force of the spring 101.102. The wire 103 is operated by driving the pushing part 12, and the wire 104 is operated by driving the driving part 18, as will be described later.

The bucket 24 has a shallow dish shape that is larger than the packages 23 so that it can accommodate packages 23 of various sizes. The bucket 24 is covered with a stretchable net 107 made of an elastic material. The periphery of the net 107 may be fixed to the edge of the bucket 24, or a hook may simply be provided to prevent the edge of the net from coming off around the outside of the bucket 24. The elastic force of the net 24 is so weak that when the package 23 is placed on the net 107, the net 107 is pressed against the inner bottom surface of the brush holder 24 by the weight of the package. In other words, the net 107 has an elastic force that prevents the packages 23 from rising from the inner bottom surface of the bucket 24 due to the elastic force of the net 107. In addition, on the inner bottom surface of the packet 24, there is a cylindrical receiving portion (9th day ) may be provided. 20 The receiving part 108 may have a flat top and be placed in the center of the bucket 24, but as clearly shown in FIG. It is preferable to make the slope slightly higher than the above. In this way, vegetables such as lettuce can be placed in the bucket 24 with the cut end of the root facing upward.
When the vegetables are placed on the bucket 24, the vegetables are also tilted according to the slope of the upper surface of the receiving part 108, and the cut ends of the roots are slightly shifted from the center of the bucket 24. However, the center of the vegetable is located approximately on the center line of the bucket 24. As a result, the heat-sealed portion of the film is positioned slightly beyond the cut end of the root, so that the cut end of the root can be seen from the outside through the film. Vegetables such as lettuce begin to rot from the cut end of the root, but by making the cut end of the root visible from the outside, the authenticity of the product can be increased. Note that the receiving portion 108 is not cylindrical;
For example, a plurality of blocks may be arranged separately so as to support the lower surface of vegetables at several locations.

Next, the pushing part 12 will be explained.

In FIG. 1, reference numeral 25 denotes a pressing body, which is supported by a support member 110 provided in an L-shape on a base, and supports the bucket 2.
It is provided above 4 so that it can move up and down. Reference numeral 111 denotes an operating lever, which allows the pressing body 25 to be pushed downward manually. A stopper 112 is provided on the upper part of the pressing body 25, and the stopper 112 is connected to the support member 110.
By contacting the upper surface, the lower end position of the pressing body 25, that is, the lowest end position of the pressing body 25 when pushed in is regulated. The position of the stopper 112 can be freely adjusted above the pressing body 25.

Note that the lowermost position of the lower end of the pressing body 25 may be adjusted by attaching a pad (not shown) or the like of an arbitrary thickness to the lower end of the pressing body 25.

A swing rod 113 is connected to the shaft 11 at one end of the support member 110.
4, the wire rope 116 is passed through pulleys 115, .
One end is fixed to the support member 110, and the other end is fixed to the lower part of the pressing body 25.

Further, a spring 117 is disposed between the swing rod 113 and the support member 110, and a wire whose one end is connected to the hook plate 97 of the universal key mechanism (FIG. 1) is placed in the middle of the swing rod 113. The other end of 103 is connected.

Therefore, the pressing body 25 is always supported by the spring 117.
It is pulled upward as shown in FIG. 1 via a swing rod 113, a pulley 115, and a wire rope 11.6. 118
is the strike and ba at that time.

When the pressing body 25 is pushed down against the tensile force of the spring 117, the swinging rod 113 is swung by the wire rope 116 in the first counterclockwise rotation direction of the hour hand.
is pulled, the locking plate 97 of the flexible oyster mechanism is unlatched, and the support portion 80, and thus the bucket 24, are in a state where they can move downward but cannot move upward.

An operating rod 121 is provided on the opposite side of the supporting member 110 to the side on which the swinging rod 113 is disposed (the front side in FIG. 1) so as to be swingable about a shaft 120. Operating rod 1
21 is normally in contact with the stopper 122. Working ring 1
A magnet 123 is fixed to the tip of 21, and the top surface of this top 123 matches the top surface of the support member 110 in height.

124 is a microswitch that is turned on by the operating rod 121 when the operating rod 121 is in a slightly raised position. After the pressing body 25 is pushed to the lowest position, when you release your hand from the operating handle 111, the pressing body 25 is moved upward by the spring 117 via the wire lobe 116 as described above. The magnet 123 at the tip of the ring 121 attracts the stopper 112 of the pressing body 25, and the tip of the operating ring 121 attracts the shaft 1 as the pressing body 25 moves upward.
The microswitch 124 is turned on from the operating rod 121.

As a result, a drive section 18, which will be described later, is activated. Note that the operating rod 121 comes into contact with the stopper 125 and stops moving upward, but the pressing body 25 is separated from the attraction of the magnet 123 and moves to the first position.
Move up to the position shown in the diagram.

Next, the film support section 10 will be explained.

FIG. 10 is a side view thereof, and FIG. 11 is a plan view thereof. In the figure, 130 indicates a roll support base.

Two parallel support rollers 132 on which the roll 22 on which the film 21 is wound are placed at the rear of the roll support stand 130
a, 132b are arranged. support roller 132a,
Sight rollers 133a, 133 are installed on both sides of 132b.
b is rotatably erected, and both side rollers 133a
, 133b can be adjusted according to the width of the film. The roll 22 is arranged between both side rollers 133a and 133b. Note that the roll 22 is not supported on a support roller, but may be rotatably supported by inserting a support shaft through the center of the roll. The film 21 pulled out from the roll is transferred to the guide roller 13
4 and the film presser (pressing means) 131, and between the upper and lower film pressers 135a and 135b (first film presser), and then pulled out forward, that is, above the top plate 27.

The film pressing body 131 presses the film against the guide roller 134 by the biasing force of a spring.

Note that the guide roller 134 and the upper film presser 1
35a is attached to a shaft 137t, thus an arm member 146 provided to be rotatable in the front-rear direction (FIG. 1), and by rotating the upper arm member I46 in FIG. 1 in the counterclockwise rotation direction, Upper and lower film pressers 135a, 135b
A gap is created between the guide roller 134 and the roll support base 130, and the film 21 is passed through this gap.
can be pulled forward. 147 is a banan lock for locking the arm member.

The roll support stand 130 is fixed on a slide stand 136.

A long hole 138 is formed in the slide table 136 in the front-back direction, and the roll support table 130 can be moved back and forth with respect to the base to adjust its position. 139 is the 7th pin for fixing it.

Reference numeral 140 denotes a film cutting frame that is rotatable in the front and rear directions above and below the slide table 136 with a shaft 41 in between and closed. At the front of the film cutting frame 140, upper and lower film pressers 142a and 142b (second film pressers) are provided.
is installed. Further, a cutting blade 143 is disposed at the rear of the film cutting frame 140 and positioned between the upper and lower film pressers 135a and 135b and the guide roller 134. A portion of the film cutting frame 140 having the shaft 141 is formed into a pipe shape, and the film holding bodies 142a, 142
The front side frame body portion of the cutting frame 140 to which the frame 140 is fixed is provided so as to be slidable relative to the above-mentioned pipe, and the positions of the film pressers 142a and 142b in the front and back direction can be adjusted. .

Reference numeral 145 denotes a pullback spring, which is stretched between the front end of the film cutting frame 140 and the support member 110.

The front end of the film 21 pulled out above the top plate 27 is attached to the film pressers 142a and 1 at the front end of the film cutting frame 140.
It is inserted and held between 42b.

When the front side of the film cutting frame 140 is pushed down about the shaft 141 against the tensile force of the spring 145, the cutting blade 143 rises and the film presser 135a,
The film between 135b and guide roller 134 is cut.

Therefore, the cut film 2j has film pressers 135a, 135b and film presser 142a at the front and back.
142b, respectively, and are held in an extended state above the top plate 27.

The cutting length of the film is determined by the film pressers 142a and 14.
This can be done by adjusting the position of 2b in the front-back direction.

Further, the center of the cut film can be aligned with the center of the apparatus (above the bucket) by moving the slide table 136 in the front and rear directions relative to the base.

As clearly shown in FIG. 11, the film 21 is pulled out in a direction approximately 45° from the moving direction of the upper and lower aperture plates (aperture members) in the film binding section 14. Therefore, the upper and lower aperture plates constrict the edges of the film toward the center.

Next, the drive section 18 will be explained with reference to FIG.

The drive section 18 is arranged on the side of the brush support section 16 .

150 is a crank cam that is approximately 1/4 arc shaped,
It is fixed to the output shaft of the drive motor 151 at the center of the arc. A crank pin is provided protruding from the front end of the crank cam 150 in the rotational direction.

Further, a tension pulley 153 and a sprocket 154 are arranged on the base, and a drive chain body 155 whose both ends are connected to the crank pin 152 is attached to the sprocket 39 fixed to the end of the rotating shaft 38 of the binding part 14, and A hook is provided between the tension pulley 153 and the sprocket 154.

Note that the tension pulley 153 of the drive chain body 155
The portion on which it slides is formed by a spring 17I that applies a predetermined tension to the drive chain body 155.

Further, a portion of the drive chain 155 between the three sprockets and the crank pin 152 is formed into a sprinkle 72 for increasing initial tension and obtaining driving force.

A pushing roller 156 is provided in a protruding manner on the opposite surface of the crank cam 150 from which the crank pin 152 protrudes.

The crank cam 10 is intermittently driven at rotational angles of approximately 180° in the counterclockwise direction from the initial position shown in FIG. Cam lever 157 for horizontal aperture that is pushed
and a cam lever 158 for releasing the lock are respectively connected to the shaft 1.
59, and is rotatably arranged around a shaft 160. The other end of the wire 76 that drives the horizontal aperture arms 70a, 70b in the closing direction is connected to the cam lever 157, and the other end of the wire 104, which has one end fixed to the locking plate 98 of the universal lock mechanism, is connected to the spring. Through the cam lever 15
It is fixed at 8.

Note that 170 is a microswitch for stopping the drive motor, which is turned on when the cam lever 158 is rotated.

A cam lever 162 is actuated by the cam surface of the crank cam 150, and is provided rotatably around a shaft 163. A rotating roller 164 is attached to one end, and the lever on the other end moves the bucket 24 around 1. The wire 89 and the other end of a wire 165 for driving an air switching plate, which will be described later, are connected to each other.

Referring to FIG. 12, 166 is the above-mentioned air switching plate, and a rotating rod 173z provided with a rotational axis C'l around a shaft 167 is attached to the rotating rod 173. 169 is an air switching plate. This is a blower fan provided opposite to 166.

In the air switching plate 166, the rotating rod 173 is normally connected to the spring 1.
68, the front side of the blower fan 169 is shut off, the air is guided downward, and the air is blown onto the drive motor 151 of the drive section 18 to cool the drive motor 151.

On the other hand, as described above, when the wire 165 is pulled, the rotating rod 173 is rotated against the spring 168,
The air switching plate 166 is rotated to open the front side of the blower fan 169. As a result, air is blown upward onto the packet 24, and after the heat sealing is completed, the fused residual film is blown away in the lateral direction (outside the machine).

Next, the overall operation will be schematically explained.

In order to make the explanation easier to understand, process diagrams shown in FIGS. 13 and 14 are attached.

(1) First, pull out the film 21 from the roll 22, cut the film 21 as described above, and remove the film pressers 135a, 135b and the film pressers 142a, 1.
The cut film is held between 42b and stretched above the top plate 27.

(2) Brush the package 23 onto the film 21 using the brush 24
Place on top. The central part of the film 21 descends together with the package 23, and the four sides of the film are pressed by the protrusions 34 that protrude toward the hole force of the top plate 27, and are slightly squeezed toward the package. Figure 13(a), Figure 14))
. The protruding length of the protruding piece 34 is 8I depending on the size of the packaged item! It is good to keep it in a section.

(3) Push in the operating lever 111 to lower the pressing body 25. As a result, as mentioned above, the wire rope 11
The tip side of the swinging rod 113 is lowered through the wire 103 through the wire 103.
is pulled, the latching plate 97 is pulled upward, and the latching to the support rod 80 is released, and the supporting rod 80 can be moved downward from this point (since the other latching plate 98 is latched). upward movement is impossible).

The pressing body 2 is pressed until the stopper 112 comes into contact with the support base 110.
Press down on 5. As a result, even if the packages 23 vary in size, the height position of the apex (sealed area) is always constant (FIG. 13(b)).

Since the top surface of the bucket 24 is covered with the net 107,
The center portion of the film 21 is pressed against the bottom surface of the package 23 by the elastic net 107. Therefore, unnecessary air is not accumulated between the center part of the film and the upper part of the package, and finally the film is brought into close contact with the upper part of the package, so that the package is beautifully packaged. This is important because the top side of the package is the front side of the product. Furthermore, the 13th
In the figure, the receiver 108 for the packet 24 described above is omitted from illustration.

When the operating lever 111 is released, the swinging rod 113 is pulled by the spring 1174, thereby causing the pressing body 25 to move upward to the initial position via the wire row 1116.

At this time, due to the action of the mag 2 soto 123, the stopper 112 is raised and the operating rod 121 is rotated upward about the shaft 120, turning on the micro switch 124. As a result, the drive unit 1 is driven.

Even if the pressing body 25 moves upward, the packet 24 does not rise and the package 2
3 is stopped at a predetermined position.

(4) When the macro switch 124 is turned on, the drive motor 151 is activated, and the crank cam 150 is rotated approximately 180° in the counterclockwise direction of rotation of the hour hand in FIG. As a result, the sprocket 39 and therefore the rotating shaft 38 are rotated clockwise via the drive chain body 155, and the chains 42a and 42b are rotated clockwise in FIG.
36b moves in the approach direction, and therefore the upper aperture plate 28a
, 28b move in the approaching direction, and the narrowing recess 35a,
35b↓ This narrows the edges of the film toward the center (Fig. 14), and a little later the lower drawing plates 31a and 31b
The film also moves in the approaching direction and narrows down the film near the top of the package (FIG. 13(C)).

Before the ends of the film are completely squeezed by the upper and lower squeeze plates, the squeeze rubbers 66a and 66b come into contact with the upper part of the package with the film 21 interposed therebetween, and squeeze the ends of the film. As a result, the air between the package and the film is exhausted as much as possible6. On the other hand, the pushing roller 156 rotates the cam lever 1.57 during the rotation of the crank cam 150, and the wire 76
As described above, the swinging arm 70a is pulled.
, 70b are rotated, and the horizontal aperture plates 32a and 32b narrow the portion of the film that is being condensed by the upper and lower aperture plates, thereby adjusting the length of the next heat seal by the heaters 30a and 30bl.

Heat sealing with heaters 30a and 30b is performed after the above-mentioned narrowing down.

That is, as described above, the upper and lower aperture plates come into contact with their corresponding stoppers to stop their forward movement, but the slide body 36a
, 36b, so the heaters 30a, 30b continue to move forward and then heat seal the constricted portion of the film (FIG. 13(d)).

When the dog 55 fixed to the slide body 36a presses the microswitch 56, the drive motor 151 is controlled by a timer to stop for several seconds, thereby completely welding the film at the heaters 30a and 30b. Note that even if the drive motor 151 stops, the drive chain body 15
A pressing force acts on both slide bodies 36a and 36b due to the tension of a spring 172 interposed in heater 3.
0a and 30b are brought into close contact with each other with a film interposed therebetween, and heat sealing is completed. The springs 171 and 172 installed in the drive chain body 155 not only perform the above-mentioned functions, but also serve as a safety escape when an operator's fingers are caught between a pair of upper and lower aperture plates. act. Chains 42a and 4 that drive both slide bodies 36a and 36b are also
2b is also interposed with a spring, and in addition to applying a certain tension to the chains 42a and 42b, these springs also act as a relief when a foreign object is caught.

The lateral aperture plates 32a and 32b are rotated back to their original positions when the pushing roller 156 is disengaged from the cam lever 157 just before the drive motor 151 stops. Drive motor 15
1 stops, the rotation of the crank cam 150 also stops, but this stopping position is approximately 1 from the initial position in FIG.
This is the position rotated by 80 degrees. Therefore, it is understood that when the drive motor 151 is driven again in the same direction after the predetermined time has elapsed, the drive chain body 155 will now rotate in the opposite direction, and both the slide bodies 36a and 36b will be moved in the direction of separation. .

As a result, the heater 30a,
30b, lower aperture plates 31a, 31b, upper aperture plates 28a, 2
It separates from the heat-sealed part in the order of 8b. Further, the squeeze rubbers 66a and 66b are also opened in the middle.

When the crank cam 150 rotates, the rotating roller 164 of the cam lever 162 rides on the cam surface of the crank cam 150. As a result, the cam lever 162 is rotated in the rotation direction of the upper hour hand in FIG. 1, and the wire 89 and the wire 165 are pulled.

When the wire 89 is pulled, the bucket 24 is tilted as described above. When the bucket 24 starts tilting, the lower aperture plates 31a and 31b open, and the upper aperture plate 28a opens.
, 28b are still in the closed state. Therefore, as the bucket 24 tilts, the film is fused at the heat-sealed portion, and the film end portions that protrude above the upper aperture plates 28a, 28b remain on the upper aperture plates 28a, 2Bb.
The heat-sealed package 23 is released toward the product receiving box 81 (FIG. 13(e)).

On the other hand, when the wire 165 is pulled, the air switching plate 166 is rotated as described above, air is blown horizontally from the 16 blowing fans, and the upper diaphragm plates 28a and 28b are opened and the falling film residue is moved horizontally. It is blown away and ejected.

When the crank cam 150 rotates further, the pushing roller 15
6 presses the cam lever 158 to rotate it, thereby pulling the wire 104.

When the wire 104 is pulled, the latch plate 98 pivots downward, the support rod 80 is unlatched, and the support rod 80 and therefore the bucket 24 rise to the initial position.

Further, when the cam lever 158 is rotated, the microswitch 170 is pushed in, and the drive motor 151 is stopped at the position where the crank cam 150 has rotated to the initial position where the pushing roller 156 is removed from the cam lever 158. It returns to the state.

When the rotating roller 164 comes off the cam surface of the crank cam 150 just before the drive motor 151 stops, the cam lever 162
is rotated back, so that the packet 24 is attached to the spring 8.
5 returns to the horizontal state. Also, air switching plate 1
66 is also rotated back by the spring 168, and air is again blown towards the drive motor 151 to cool it down.

In the above embodiment, the front end and rear end of the film are held between the second and first film pressers, but the front end side, that is, the second film pressers 142a and 142b, may not necessarily be provided. That is, at least the first film presser 1.35a, 135b can press the trailing edge of the film and cut the film between the guide roller 134 and the film with good quality, and the film can also be supported after cutting by the first film presser. If the rear end of the film is held between 135a and 135b, the film will not be blown out of the machine by wind or the like. A film cutting frame is not necessarily required.

That is, the film may be simply pulled out onto a support plate having a hole through which the package passes, and the cutting blades may be provided so as to be able to be driven separately and cut the film between the first film presser and the kite roller. .

FIG. 15 shows another embodiment of the film support section 10.

In this embodiment, the roll support base 130 is provided with a rotating arm 181 that rotates around a shaft 180.
A guide roller 134 and a film pressing body 13 are attached to the lower end of 81.
1 is provided.

Further, the rear end of the film cutting frame 140 and the middle part of the rotating arm 181 are connected by a link 182.

Furthermore, a pair of film pressers 135a and 135b (first
When the presser body 135a on the film presser 135a is fixed to the middle part of the rotating arm 181 and the front end of the film cutting frame 140 is pushed down as shown in FIG. 15(b),
The rotating arm 181 is rotated by the link 182, and the space between the upper and lower film pressers 135a and 135b is closed. 184 is the rotating arm 1 at the above rotating position.
81, and is biased to rotate to the right about a shaft 185 by a spring (not shown) in FIG. 186 is a wire for releasing the stopper piece 184, one end of which is connected to the stopper piece 184G;
The other end is connected to the swing ring 113 described above.

Normally, as shown in FIG.
40 rotates to the right, it is pulled by the link 182 and rotates to the left, whereby the upper and lower film pressers 135a, 1
35b is opened, and the guide roller 134 and film pressing body 31 are located to the left of the cutting blade 143, that is, in front of the cutting blade I43. Therefore, the edge of the film sandwiched between the guide roller 134 and the film pressing body 131 is not disturbed by the upper 'F (7) film pressing springs 135a, 135b, and the cutting blade 143 does not injure fingers. It can be safely and easily pulled forward without any problems. After the front end of the pulled-out film is held between the film pressers 142a and 142b, the 15th
When the front end of the film cutting frame 140 is pushed down as shown in FIG.
A predetermined portion of the film is held between the guide roller 134 and the film pressing body 131 by the cutting blade 14.
3. When the rim is rotated to the rear position, press the button 18.
Lock at 4. At the same time, the cutting blade 143 cuts the kite roller 134 and the upper and lower film pressers 135a.
, 135b is cut. As a result, the cut film is stretched with both ends supported by the first and second film pressers. When the package is fed onto the bucket 24 and the pressing body 25 is pushed down, the swing ring 113 rotates, the wire 186 is pulled, the stopper piece 184 is rotated to the left, and the stopper piece 184 is engaged with the rotation arm 181. The lock is released and the rotating arm 181 returns to its original position.

According to this embodiment, since the guide roller 34 and the film pressing member 131 are always rotated forward of the cutting blade 143, the film can be pulled out safely and easily.

The packaging device according to the present invention can be suitably used not only for packaging head vegetables but also for packaging other lumps.

Although the present invention has been described above with reference to preferred embodiments, it goes without saying that the present invention is not limited thereto.

For example, the cutting and feeding of films and the feeding of packages can be automated.

There may be only one aperture member above or below the film binding section. In addition to welding and fusing with a heater, the film may be bound by adhesive tape, ribbon, wire, or the like, or by simply wrapping the ends of the film.

The film pressing body 131 may be a roller.

The bucket (receiver) does not necessarily have to be tilted, but may be provided to simply move up and down. In this case, it is preferable to take out the packaged item from the upper side of the film support portion after wrapping.

The mechanism for vertically moving the bucket can also be implemented using a screw rod or the like. For packages of constant size, the bucket may be fixed.

Further, the sliding body of the film binding section can be moved toward and away from the film by a rolling device.

Of course, many modifications can be made in keeping with the spirit of the invention.

(Effects of the Invention) As described above, according to the present invention, after the film is pulled out above the film binding section, the film is held between the guide roller, the film pressing means, and the pair of upper and lower film pressers. Since the film portion is cut with a cutting blade, the film can be easily cut, and the rear end of the cut film is held in the state held by the first film holder, so the film can be cut securely. It can be stretched and supported in a predetermined position, making it easy to package items.

In addition, by providing a film cutting frame with a second film presser at the front end and a cutting blade at the rear end so as to be rotatable in the front-rear direction, the film can be easily cut by rotating the film cutting frame. Further, the film can be easily and more reliably stretched and supported at a predetermined position while the front and rear ends of the cut film are held between the second and first film pressers.

By disposing the guide roller and the film pressing means on the rotating arm and rotating the film to the front and rear positions of the cutting blade, work can be carried out safely without injuring fingers or the like by the cutting blade when drawing out the film.

A roll support stand and a film cutting frame are installed on a slide table, and the front side frame body of the film cutting frame is movable back and forth relative to the rear side, thereby keeping the center of the film at the center of the device. Its length can be changed.

In addition, by setting the film support direction in the film support section so that one diagonal of the film faces the direction of approach and separation of the aperture member at the film binding section, the long edges of the film can be squeezed with the aperture member. This makes it easier to narrow down the search results.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire mechanism mainly showing the pushing part and the drive part, Fig. 2 is a side (partially cross-sectional) view of the film binding part and bucket support part, and Fig. 3 is a plan view of the film binding part. 4 and 5 are both cross-sectional explanatory views of the film binding part, and
The figure is an explanatory diagram showing the connecting part of the slide body and the lower aperture plate.
The figure is a plan view showing the rotation mechanism of the horizontal aperture plate, the 8th figure is a cross-sectional view, the 9th figure is an explanatory view showing another embodiment of the brush, and the 10th figure is a side view of the film support part. Fig. 11 is a plan view thereof, Fig. 12 is an explanatory diagram of the air switching plate, Fig. 13 is an explanatory diagram of the operation of the upper and lower aperture plates and the heater in the film binding section,
FIG. 14 is an explanatory diagram showing the state of film squeezing by the protruding pieces. FIGS. 15(a) and 15(b) show other embodiments of the film support section. IO...film support part, 12...pushing part,
14...Film binding part, 16.Brush, support part, 18...Drive part, 21...Film,
23...Package, 24...Bucket, 28a,
28b... Upper aperture plate, 30a, 30b...-Heater, 31a, 31b...-Lower aperture plate, 32a 32b... Lateral aperture plate, 35a, 35b... Squeezing recess, 36a 36b... Slide body, 46, 53.61 ・・・Spring, 47 ・ ・
・Stopper, 62a ・・Stopper, 64a
, 64b...□ Stopper, 66a 66b... Elastic string-like body, 80... Support rod, 130... Roll support base, 1
31... Film pressing body (pressing means), 134...
- Guide rollers, 135a, 135b...first film presser, 13
6... Slide stand, 140... Film cutting frame, 142a, 142b... Second film presser, 143... Cutting blade, 181... Rotating arm. Figure 7b Figure 7b O Swamp Kazu Figure Figure Figure Figure o8 Figure Figure Figure Figure (e) Ward Ward N

Claims (1)

[Scope of Claims] 1. A film support section that is provided so that a bulk package can pass therethrough and that supports a film for packaging the package at a portion through which the package passes; a receiver disposed below the film that receives the package supplied from above the film via the film that is drawn in as the package is supplied; and a receiver between the film support and the receiver. The film is provided on both sides of the receiver with a space above the receiver so as to be movable toward and away from each other, and the opposite end edges of the film extend above the package received on the receiver when the film approaches the receiver. A packaging device for bulk packages, comprising: a film bundling section having a pair of squeezing members for squeezing the film; In order to pull out the film pulled out from the roll supported by the support stand horizontally above the film binding section, a guide roller disposed near the base of the roll support stand, a film pressing means for the guide roller, and a guide roller. Furthermore, a pair of first film pressers are arranged at the front in the film pull-out direction and press the pulled-out film from above and below, and a cutting blade cuts the film between the guide roller and the first film presser. A packaging device for bulk packages, characterized in that: 2. A second film presser is disposed above the film bundling part so as to be rotatable in the front-rear direction, and has a second film presser at the front end that clamps the front end of the pulled-out film from above and below, and a second film presser at the rear end. 2. The packaging apparatus for bulk packages according to claim 1, further comprising a film cutting frame to which is fixed a film cutting frame. 3. The guide roller and the film pressing means are disposed at the lower part of a rotating arm that is rotatably provided on the roll support in the front and back direction above the cutting blade, and the rotating arm is connected to the guide roller. and the film pressing means is provided to rotate between a stop position in front of the cutting blade and a stop position behind the cutting blade. Packaging equipment for bulk packages. 4. The roll support stand and the film cutting frame are arranged on a slide stand fixed to the base so as to be slidable in the front-back direction, and the front side of the film cutting frame to which the second film presser is fixed. 4. The packaging device for bulk packages according to claim 2, wherein the frame portion is movable back and forth relative to the rear side to which the cutting blade is fixed. 5. The film support part is cut by a cutting blade,
Claim 1, characterized in that the film whose rear end is held between the first film holding members is supported such that one diagonal line of the film faces in a direction in which the pair of aperture members of the film binding section approach and separate. 5. A packaging device for bulk packages according to 2, 3 or 4.