JPS62109714A - Film conveyor for packaging in packaging machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention is directed to, for example, a packaging machine for fresh foods, in which a strip-shaped packaging film is sandwiched between a pair of upper and lower belts and conveyed to the packaging section of the machine. The present invention relates to a conveyance device for use in transportation.

(Prior Art) Conventionally, as this type of conveying device, for example, Japanese Patent Laid-Open No. 1115
8-90010 is provided. In this device, two shafts are supported on both front and rear sides of a pair of shafts installed on one side of the fixed frame, and two shafts are supported on both front and rear sides of a pair of upper and lower shafts installed on the other side of the fixed frame. Between the two supported rollers, a plurality of endless round conveyor belts are hung vertically facing each other, and one side of the upper and lower round belts serves as a film supply port. In addition, the portion between the endless round belts on both the front and rear sides, which corresponds to the packaging film folding device, serves as a packaging section. Then, both widthwise ends of the packaging film are sandwiched between the lower running part of the upper round belt and the upper running part of the lower round belt, and the film is transported from the supply port to the packaging part. It is now possible to do so.

(Problem to be Solved by the Invention) However, while the packaging film is being conveyed to the packaging section, the packaging film between the endless round belts on both the front and back sides swells due to wind, static electricity, etc. There was some sleet that got caught and torn on the folding parts of the device and surrounding parts.

Therefore, we installed a member that presses the packaging film from 1 hour.
The present invention prevents this swelling.

Structure of the Invention (Means for Solving Problems) That is, as shown in the drawings of the embodiments described later, the present invention provides packaging from a film supply port P toward a packaging section S corresponding to a packaging film folding device 76. In a packaging film transport device of a packaging machine for transporting a film F, a bulging prevention member 50 is provided between the film supply port P and the packaging section S to press down the packaging film F from above.

(Function) In particular, even if the starting end of the film F tries to swell up due to wind or the like just before being led to the packaging section S, the starting end is prevented by the bulging prevention member 50. Further, the same applies when the middle part of the film bulges out, not only at the starting end of the film F.

(Embodiment) Hereinafter, a case will be described in accordance with the drawings in which a packaging film conveyance device according to an embodiment of the present invention is utilized in a fresh food packaging machine.

1 in Fig. 1 indicates a packaging film transport KFr installed on the upper part of the machine frame, and as shown in Fig. 2.3, two roller shafts 3 are installed from the outside on one side between the front and rear fixed frames 2. , 4 and a driven shaft 5 are rotatably installed, and a pair of shafts 6,
7 is fixed, and a pair of upper and lower shafts 10 and 11 are fixed to the other side.

Reference numeral 12 denotes a pair of opening/closing frames supported rotatably in the vertical direction on both front and rear ends of the shaft 6, extending from the support shaft 6 to above the roller shaft 3, and extending from the ends of the opening/closing frames 12. A support frame 13 having a handle 14 is fixed between the parts, and a roller shaft 15 is rotatably installed on the base end side of the support frame 13, and a shaft 16 is fixed thereto.

In FIG. 3, reference numeral 18 indicates a pair of upper and lower rollers rotatably supported on the front side of the pair of upper and lower shafts 16°5, and 19 indicates a pair of rollers rotatably supported on the front side of the pair of upper and lower shafts 6 and 7. A pair of upper and lower rollers, the upper rollers 18,
Two endless round belts 20 are placed on the rear side between 19 and 19, and one endless round belt 20 is placed on the lower side between 918 and 19 so as to be interposed between the tip belts 20. The belt 20 is hooked up. 21 is the pair of upper and lower shafts 1
A pair of upper and lower rollers rotatably supported on the front side of 0.11, with the -V side roller 19 interposed between the upper roller 21 and the front side of the upper roller 18. Three endless round belts 22 are passed around, and four endless round belts are passed between the lower D-ra 21 and the front side of the lower roller 18 via the lower roller 19. As shown in FIG. 5, the lower running part 22a of the upper round belt 22 is interposed between the upper running part 23a of the lower round belt 23, and both running parts 22a , 23a
are arranged alternately one by one to form seven belt rows M. 24 is a pair of upper and lower rollers rotatably supported with respect to the fixed frame 2 inside the roller 19;
5 is a lower pair of rollers rotatably supported on the fixed frame 2 inside the roller 21, and both upper and lower round belts 22, 23 are tensioned by both rollers 24, 25.

Reference numeral 26 denotes a front film pressing member that is vertically movably supported with respect to the front fixed frame 2, and is divided into a central pressing portion 26a and horizontal pressing portions 26b on both left and right sides of the central pressing portion 26a. As shown in FIG. It is interposed between the running parts. A pressure receiving plate 27 extends from the fixed frame 2 in correspondence with the front presser member 26, and is interposed between the upper and lower running portions of the upper round belt 22, as shown in FIG.

Reference numeral 28 denotes a moving frame that is inserted through the rear side of the front lower shaft 5.7.11 so as to be movable in the axial direction, and a male threaded rod 29 is attached to the female threaded portion 29a attached to both left and right sides of the moving frame. They are screwed together. This male screw 6 and rod 29 are supported by the fixed frame 2, and are connected to a chain 29b.
One Ait threaded rod 29 has a handle 29C on the outside of the fixed frame 2 on the rear side, and rotation of this handle 29c causes the movable frame 2 to move.
8 is adjustable in movement.

Reference numeral 30 denotes a pair of upper and lower shafts 16 and 5 which are movably and rotatably supported in the axial direction of the pair of upper and lower shafts so as to be able to be positioned within the moving frame 28; A lower pair of rollers are similarly supported on the lower pair of shafts 6 and 7, and two endless round bells 1 to 49 are mounted on the front side between the upper two rollers 30 and 31. At the same time, an endless round belt 49 is hung between both [] and 30 and 31 on the ■ side so as to be interposed between the companion belts 49. 32 is the pair of upper and lower shafts 10.1
A pair of upper and lower rollers 30, 31, and 32 are supported in the same way relative to 1, and these rollers 30, 31, 32 are pushed by the moving frame 28 as the moving frame 28 is adjusted, so they follow the moving frame 28. It is designed to move in the axial direction.

33 denotes four non-winding round belts which are passed between the upper rollers 30 and 32 via the upper roller 31;
Reference numeral 4 denotes six endless round belts that are passed between the lower rollers 30 and 32 via the lower roller 31, and as shown in FIG. The lower running part 33a of the upper round belt 33 is interposed between both running parts 348 except between the upper running part 348 at the center, and both upper and lower running parts 33a are interposed between the upper running part 348 at the center. ,
34a are alternately arranged one by one to form ten belt rows M. Reference numeral 35 denotes a pair of upper and lower rollers that are rotatably supported within the movable frame 28 inside the roller 31, and move to follow the movement adjustment of the movable frame 28, and move within the movable frame 28 inside the roller 32. The companion belts 33, 34 are tensioned by a pair of upper and lower rollers 36 which are rotatably supported by the rollers 28.

Reference numeral 37 denotes a rear film pressing member supported vertically movably with respect to the movable frame 28, and is connected to the central pressing portion 37a.
It is divided into horizontal press II Alt 3711 on both the left and right sides. Reference numeral 38 indicates the rear presser member 3 on the upper part of the moving frame 28.
7, and the positional relationship between the rear presser member 37 and pressure plate 38 and the upper and lower round belts 33 and 34 is the same as that of the front film presser member 26. .

As shown in FIG. 5, a packaging section S is formed between the round belts 22, 23 and 33, 34, corresponding to both the front and rear film pressing members 26, 37.

In FIG. 3, reference numeral 39 denotes a pair of pulleys supported at the rear ends of the roller shafts 3 and 4, and an endless flat belt 40 is passed between both pulleys 39. 41 is a gear fixed to the upper and lower eyes 21; 42 is a gear fixed to the upper and lower eyes;
The gear is fixed to the roller 32 and movable in the axial direction together with the roller 32, and the drive rotation of the lower shaft 11 is transmitted to both gears 41, 42, and the roller 21, 32, round belt 22. 23, 33, 34, etc., to a pair of upper and lower shafts 16, 5 on the opening/closing frame 12 side.

The rotation of the driven shaft 5 is transmitted to the roller shaft 4 via a clutch brake (not shown), and furthermore, the rotation of the driven shaft 4 is transmitted to the roller shaft 3 via the flat belt 40. On the same day, it is also transmitted to the roller shaft 15 superimposed on the roller shaft 4.

A saw blade support rod 43 is rotatably installed between the front and rear fixed frames 2 between the roller shafts 3 and 4, and a saw blade 43a is attached to almost the entire length of the saw blade support rod. rotation is transmitted via a clutch brake (not shown).

A case will be described in which a packaging film F is set from a take-up roll (not shown) provided on one side of the machine frame to the packaging film conveying device 1 configured as described above. In this case, the position of the moving frame 28 is adjusted in advance according to the width dimension of the packaging film F by operating the handle 29c. Then, when grasping the handle 14 on the side of the machine frame shown in FIG. 2 and lifting it upward, the opening/closing frame 12 is
The upper roller 18.30 and the lower roller 18, 30 are separated from each other, and the film supply port P is rotated upward.
opens. From this state, the starting end of the wrapping film F for winding [J-R] is guided to the supply port P via the two-wheel shafts 3, 4, and the lower round belts 20, 23, 34, . . . shown in FIG. ．． 4
Place it on 9-. Next, when the opening/closing frame 12 is returned downward to bring the upper rollers 18, 30 and the lower rollers 18, 30 closer together and the film supply port P is closed, the packaging film F
Both edges in the width direction are connected to the upper round belt 2 as shown in Figure 5.
2.33 Lower running parts 22a, 33a and lower round belts 23.34 Upper running parts 23a, 34a for the belt row M, one row 1 from the inside] running parts 23a, 34
A is alternately inserted under the running sections 22a and 33a of the -12th row and above the running sections 23a and 34a of the third row, resulting in an up-and-down meandering state.

From this set state, the packaging film F is guided and stretched to the packaging section S by the drive of the film transport device 1 as shown in FIG. As shown in FIGS. (a) and (11), by driving both the front and rear film pressing members 26, 37, each of the suppressing portions 26a
, 26b, 37a.

37b and the pressure receiving plates 27, 38 together with the belt row M.

In the packaging film conveying device No. 1 constructed in this way, as shown in FIG.
0 is set. That is, the bulge prevention member 50 is provided between the front film pressing member 26 and the support shaft 6, which is the center of rotation of the opening/closing frame 12, and is coaxial with the upper roller 24, as shown in FIG. Base 51 fixed on the center
A face plate 52 protruding toward the packaging section S side and a long and thin elastic plate 53 protruding below the support shaft 6 are attached to the holder, and the tip of the elastic plate 53 is slightly bent upward.

Then, the packaging film [is transported from the supply port P to the packaging section S through the lower part of the bulge prevention member 50.

As shown in FIGS. 1 and 2, a packaging film folding device 76 is installed above the packaging film conveying device 1, and a packaging film folding device 77 is installed above the packaging film transport device 1.
As shown in FIG. 8, both sliders 79, which are supported so as to be movable in the front and rear directions with respect to rails 78 arranged on both the left and right sides of the upper part of the machine frame, are connected to a connecting plate 80 and rollers 8 on both the front and rear sides thereof.
The rear folding member 82a connected at 1 is a left and right side support member 82 that is supported movably in the left and right direction with respect to a support plate 83 installed between the rear ends of the rails 7B at the rear of the rear folding member 77. is a left and right folding member mounted on a shaft 84 so as to be rotatable in the left and right direction with respect to both support members 82a, and passes forward from the coaxial mounting portion (rotation fulcrum) of the rear folding member 77. It extends, and an auxiliary folding plate 86 is screwed to the distal end thereof so that its position can be adjusted.

Reference numeral 89 denotes a front folding member installed between the front ends of both the rails 78, and has both front and rear conveyance rollers 90 and a folding roller 91 provided behind the rear side conveyance roller 90. 590, a round belt 90b is passed between the rear conveyance roller 90 and the folding roller 91 at both ends, and the same belt 90a, 90b is configured to rotate only in the direction of arrow C l\.

Reference numeral 140 denotes a threaded rod supported on the support plate 83 so as to extend in the left-right direction, and has a left-hand threaded portion 140a and a right-hand threaded portion 140b.
One of the support members 82a is screwed into the left-hand threaded portion 140a, and the other support member 82a is threaded onto the right-hand threaded portion 140a.
It is screwed into 0b. 141 is the left and right support member 8
2a is an electric motor installed on the machine frame at the rear, and a pulley 142a of its output shaft 141a is connected to a pulley 142b attached to a threaded rod 140 between both left and right support members 82a via a flat belt 142. It is linked. When the screw $140 is rotated by this electric motor 141, the left and right side support members 82a open the left and right screw portions 140a.
, 140b to approach the second or third point.

In FIGS. 8 and 9, 143 is the left and right support member 82a.
It is an L-shaped guide plate fixed to the front part of the board, and consists of a base plate part 143a extending to both left and right sides, and an engagement plate part 143b extending forward from the tip thereof along the rail 78. A roller 144 attached to the tip of
is supported movably in left and right directions on a rail portion 145 of the machine frame. Then, when the left and right support members 82a move in the left and right direction, the left and right inner guide plates 14
3 t) They are designed to move in the same direction.

146 is a guide groove formed in the engagement plate portion 143b of the guide plate 1/13 so as to extend in the front-rear direction; 147 is a guide bin engaged with the guide groove 146;
The elongated hole 1 is connected to the protruding plate part 79a protruding from the slider 79 of the rear folding member 77 below the engagement plate part 143b.
48 so as to be movable in the left and right direction. 1
Reference numeral 49 indicates the lower end of the guide bin 147 and the left and right bending portions 4
4 B A link rotatably supported by the front end side of 2. When the slider 79 of the rear folding portion 4477 rests on the rail 78 and moves forward and backward, the guide bin 147 moves into the guide groove 14 of the guide plate 143.
6, both the left and right folding members 82 connect to the link 149.
They rotate about the pivot point 84 to open and close each other.

Further, when the left and right inner support members 82a approach and separate from each other, while the guide bin 187 moves along the long hole 148 of the slider 79, the left and right folding members 82, the guide plate 143, the guide bin 147, and the link 149 move, respectively. Translate horizontally while maintaining the same positional relationship.

In FIG. 1.2, reference numeral 93 is a bracket installed on the rear end of the rail 78, and 94 is a lever fixed to a support shaft 95 rotatably installed between the upper part of the bracket 1 and the upper part of the rail 78. A shaft 96a is rotatably attached to an interlocking rod 96 that is driven vertically. 97 is the bracket 9
A pair of levers 98 are fixed to both ends of a support shaft 95 on the outside of the lever 97, and a link 98 is rotatably connected to the shaft 99 at the tip of the lever 97, and is rotatably attached to the slider 79. 100 shafts are installed.

When the interlocking rod 96 is in the upward movement position, the rear folding member 77 is in the retracted position and both the left and right folding members 82 are in the wide open state, as shown in FIG. When the interlocking rod 96 moves downward from this state, as shown in FIG. The position of the guide groove 146 is regulated and the left and right folding parts 82 are closed to each other via the link 149, and these front, rear, left and right folding members 89,77
．． The space between 82 and 82 is defined as the folded portion R. As shown in FIG.
is supported.

In particular, the film bulging prevention member 50 of the conveying device 1
The face plate 52 is located below the tip of one of the left and right folding members 82.

1 and 2 show a device 101 for discharging goods W, and 104 is a conveyor on which an endless belt 104a made of sponge is stretched, and is supported rotatably in the vertical direction on a four-bar parallel link vs1M102. , which corresponds to the packaging section S-to of the packaging film conveying device 1 in a horizontal state. This conveyor 104 has a four-bar parallel link mechanism 1.
02 allows parallel movement in the vertical direction.

Further, the belt 104a of this conveyor 104 rotates in the sending direction and is prevented from rotating in the opposite direction.

In FIG. 1, reference numeral 45 denotes a belt conveying type article supplying device installed below the film conveying device 1 both inside and outside the machine frame, and 46 denotes an inner end of the article feeding device 45, the wrapping section S and the folding section R. A plurality of loading tables 46a which are tiltably biased and which are moved up and down between the article receiving tables 46a.
At the lowest moving position, the article W is transferred from the article supply device 45 and placed thereon, and is positioned by a stopper 47.

Next, an outline of the actual packaging operation will be explained.

Before operation, when an item W (1-lay with stored items) is placed on the item supply device 45, the distance between the pivot points 84 of the left and right folding members 82 is automatically adjusted according to the item W. Target 1
It is stipulated.

Next, the article W is transferred by driving the article supply device 45 and placed on the pedestal device 46 that has moved downward. At this time, the rear folding member 77 is moved backward by the upward movement of the interlocking rod 96.

When the film conveyance device 1 is driven in synchronization with this feeding, the starting end of the packaging film F located at the supply port P is conveyed toward the packaging section S at the center of the conveyed image 1. . During its conveyance, the sawtooth 43a forms perforations in the width direction of the packaging film F at every fixed length, and an instantaneous brake is applied at the supply port P to pull the packaging film F, and this tensile force causes It is cut at the perforations and conveyed to the packaging section S.

During this conveyance, the film F swells at the bulge-1-bulk prevention section (45
After being guided below the tip of the elastic plate 53 of No. 0, it passes below the face plate 52 of the same member 50. Therefore, even if the starting end of the film F is about to swell up due to wind or the like just before it is led to the packaging section S, the starting end will be prevented from blistering by the bulging prevention plate 50 and will not be caught by the folding device 76 or the like. It is reliably guided below the device 76. Further, the same applies when the middle part of the film F swells and bulges, not only at the starting end of the film F.

The packaging film F on the packaging section S is shown in FIG. 6(a).

As shown in FIG. 7(b) and FIGS. 7(a) and (b), the upward movement of both the front and rear film pressing members 26 and 37 causes each of the suppressing portions 2
6a, 26b, 37a, 37b and receiving plate 27.3
8 together with the belt M row, and the packaging film F is prevented from being pulled out.

Next, when the pedestal device 46 moves upward and the item W pushes up the packaging film F, the item W is covered with the packaging film F.

Thereafter, as the interlocking rod 96 moves downward with the upward movement of the pedestal device 46, the rear folding member 77, which is in the retracted position, moves forward. Along with this forward movement, both the left and right folding members 82 also approach each other. Next, when the rear folding member 77 and the left stone double folding member 82 enter below the item W, and the pedestal device 46 moves downward again, the item W is placed on the rear folding member 77 and the lower side of the item W is inserted. The folding operation of the packaging film F is performed from both the rear and left and right directions. In synchronization with this folding operation, the central pressing portion 37a and the lateral pressing portion 37 of the rear film pressing member 37
b and the horizontal pressing portion 26b of the front film pressing member 26
is moved downward, and each pressing portion 37a.

The clamping between 37b and 26b is released.

Thereafter, when the belt 104a is rotated and the clamping by the central pressing part 26a of the front film pressing member 26 is released, the crystal object W is conveyed forward, and the crystal object W is transported from above the rear folding member 77 to the front folding member 89. During the transport, the underside of the item W is also folded from the front, and the folding from the rear overlaps with the folding from both left and right directions, forming a folded part at the bottom of the item W.Next, The interlocking rod 96 is moved upward again and the rear folding member 77 retreats, and as the rear folding member 77 retreats, both the left and right folding members 82 open from each other.

The product W to be packaged is carried out, where the folded portions are brought into close contact, completing one process and moving on to the next process.

Effects of the Invention In short, according to the present invention, since the film F is prevented from swelling during transportation, the film F is reliably guided below the folding device 76 without being caught by the folding device 76, etc.
can eliminate tearing.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing the side surface of a fresh food packaging machine using the packaging film conveying device according to the present embodiment, and FIG. 2 is a schematic cross-sectional view taken along line X-X in FIG. Figure 3 is a schematic plan view showing the packaging film conveyance and preparation of this embodiment;
The figure is a partial sectional view showing the swelling prevention member of this embodiment,
FIG. 5 is a partial sectional view of the packaging film transport device, and FIG. 6(a). (b) and Figures 7<a) and (b) are partial cross-sectional views showing the film clamping action by both the front and rear pressing members, Figure 8 is a schematic plan view showing the folding device, and Figure 9 is the interlocking operation of the folding device. It is a partial sectional view showing a mechanism.

Claims (1)

[Claims] 1. Packaging film transport of a packaging machine that transports the packaging film (F) from the film supply port (P) toward the packaging section (S) corresponding to the packaging film folding device (76). Packaging in a packaging machine, characterized in that a bulge prevention member (50) for pressing the packaging film (F) from above is provided between the film supply port (P) and the packaging section (S). film conveyance device.