JPH037281Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to the use of stretchable plastic films such as polyvinylidene chloride, which can be used to wrap packaged objects, especially foodstuffs and other products placed in trays or other containers. This invention relates to a packaging machine that wraps with film.

[Conventional technology]

In general, this type of packaging machine includes a film supply device that feeds out a roll of stretch film and transfers it to a packaging section position, a packaged object supply device that transfers the packaged item onto a pedestal, and a packaged item supply device that transfers the packaged item onto a pedestal. a pedestal lifting device that is movable up and down below the packaging unit position; a film folding device that folds the stretch film under the packaged object; and a film folding device that carries out the package folded by the film folding device. The device consists of a carry-out device that pushes up the packaged items supplied to the pedestal towards the stretch film supplied to the packaging section and stretched, thereby pressing the packaged items against the stretch film and tensioning the stretch film. While maintaining this condition, the stretch film is folded under the packaged object using a folding tool to wrap it, and then the wrapped package is transported out.

Such packaging machines are sometimes covered with a cover to prevent other members from entering the machine or to improve appearance.

However, the cover of conventional packaging machines of this type is formed from a metal plate, and the metal cover is mounted on stays that are fixed to the inner walls of the left and right side plates of the main body frame with screws. Ta.

[The problem that the idea attempts to solve]

In the above-mentioned conventional technology, the work of attaching and detaching the cover as necessary is troublesome because the cover is heavy, and since it is made of a metal plate, it is easy to injure hands and fingers. Further, even if the cover is removed, the stays protruding inward from the left and right side plates become an obstacle, causing trouble in inspecting and repairing the internal devices of the main body frame. Furthermore, when replenishing or replacing the rolled stretch film and setting the film, the cover gets in the way and is troublesome to handle.

This invention was created in view of the above circumstances,
The cover device is lightweight and easy to handle when attached and detached, the cover support member does not protrude into the main body frame, and the rolled stretch film can be easily replenished or replaced while the cover is attached. The purpose of the present invention is to provide a packaging machine having the following features.

[Means to solve the problem]

The present invention includes a film feeding device that feeds out a roll of stretch film and transports it to a packaging section position;
A packaged article supply device that transfers the packaged article onto a pedestal, a pedestal lifting device that allows the pedestal to move up and down below the packaging section position, and a pedestal lifting device that moves the stretch film to the bottom of the packaged article. A packaging machine comprising a film folding device for folding a film into the film folding device, and a carrying-out device for carrying out the package folded by the film folding device, the main body frame surrounding at least the film feeding device, the film folding device, and the pedestal lifting device. A synthetic resin cover is installed on the
This synthetic resin cover is provided with an opening/closing lid for replenishing or replacing the roll-shaped stretch film, and is designed to cover the outer surface of the main body frame of the packaging machine and the synthetic resin cover covered with the main body frame. An engaging protrusion is provided on one side of the lower part, and an engaging recess is provided on the other side, and the cover is fixed to the main body frame in a covered state by the uneven engagement between the engaging protrusion and the engaging recess. be.

[Effect]

With the above configuration, the synthetic resin cover is fixed to the main body frame in a covered state by the convex-concave engagement of the engaging convex portion and the engaging concave portion. Further, by opening the opening/closing lid, the attachment location of the rolled stretch film is opened, and the rolled stretch film can be easily replenished or replaced with the cover covered.

[Example] Figures 1 and 2 show an overview of the overall configuration. On the front side of the main body frame 1, there is a packaged article 3 up to the lower part of the packaging section 2, which is approximately the middle part of the main body frame 1.
A packaged article supply device A is provided with a conveyor 4 for conveying the packaged articles.

At the supply end of the conveyor 4, there is disposed a pedestal 5 on which the articles 3 to be packaged are fed and placed by the conveyor 4, and this pedestal 5 is connected to a lift 6 which is moved up and down by a drive unit as appropriate. In addition, a pedestal lifting device B is formed which stretches and holds the film when the pedestal 5 is raised.

A roll body 8 in which a stretch film 7 is wound in a roll shape is rotatably held on the rear side of the main body frame 1. A film feeding device C that is sandwiched between a pair of endless belts 9 and transported to the packaging section 2 is disposed on both sides of the upper part of the main body frame 1 in the front-rear direction. At the end of the endless belt 9 on the side where the stretch film 7 is inserted, there is a cutter 10 for perforating the stretch film 7 in the width direction.
A film cutting device D is provided, which includes film pressers 11 provided on both sides of the film. Packaging department 2
A film pressing portion E presses a position near the rear of the perforation of the stretch film 7 supplied to the position.
is provided.

A rear folding body 12 that reciprocates along the length direction of the stretch film 7 and left and right folding bodies 13 that can be mutually opened and closed along the width direction of the film 7 are provided on the packaging section 2 side of the main body frame 1. Each folding body 1
The packaged object 3 is cut from the perforation position where the rear side is pressed by the presser E as the objects 2 and 13 move, and is lifted up by the pedestal lifting device B.
A film folding device F is provided on the bottom surface of the camera.

A delivery device G is provided on the upper side of the main body frame 1, and includes a delivery belt 14 that moves forward in contact with the upper surface of the package 3a, and a transfer body 15 on which the package 3a is placed and transferred.

As shown in FIG. 5A, the packaged items 3 such as trays containing products are transferred from the front side of the main body frame 1 to the lower part of the packaging section 2 at an approximately intermediate portion by the conveyor 4 of the packaged item supply device A, and placed on a pedestal. 5 is supplied and placed.
At the same time as the object to be packaged 3 is transferred, the stretch film 7 pulled out from the roll body 8 by the film supply device C is transferred from the rear side of the main body arm 1 to the packaging section 2.
The film is transported to the desired position while being sandwiched between a pair of upper and lower endless belts 9, and during the transport, a perforation 16 is formed by the cutter 10 of the film cutting device D, and in this way, the perforation is cut as shown in FIG. The series of stretch films 7 on which 16 have been formed are further transferred to the packaging section 2 position, and are in a state where the position near the rear of the perforation 19 is pressed by the presser section E.

In this way, as shown in FIG. 5B, the article to be packaged 3 is fed onto the pedestal 5, and a series of stretch films 7 with perforations 16 are fed to the packaging section 2 and pressed by the presser E. In this state, as shown in FIG. 5C, the pedestal 5 is raised by the lift 6 of the pedestal lifting device B, and the stretch film 7 supplied to the packaging section 2 position is pushed up from below and stretched, and then folded into the rear part. The body 12 and the left and right folding bodies 13 are slid along the bottom surface of the pushed-up object 3 to be separated from the perforation 16, and the edges of the stretch film 7 are folded in to form a package 3a. This package 3a is carried out to the front side of the main body frame 1 by the carry-out belt 14 and the transport body 15 as shown in FIG. 5D.

More specifically, in the film supply device C shown in FIG.
The film is guided to the upper side of the main body frame 1 by a pair of upper and lower film feeding rubber rollers 19 and 20 which are rotatably installed on the main body frame 1. On the front side of the film feeding rollers 19 and 20, a pair of upper and lower conveyor 9 driving and film feeding rubber rollers 21 and 22 are spaced apart and mounted on the main body frame 1 at the same height as the film feeding rubber rollers 19 and 20. Erection and main body frame 1
A pair of upper and lower rollers 23 and 24 for the conveyor 9 are rotatably supported on both front side surfaces of the conveyor 9. A pair of upper and lower endless belt conveyors 25 and 26 are spanned between the belt guide portions on both sides of the rubber rollers 21 and 22 and the rollers 23 and 24, respectively. A plurality of shafts 27 for pressing the upper conveyor belt 25 from above are supported on the side surfaces of the main body frame 1, and a pair of upper and lower endless belt conveyors 25, 26 have running portions 25a, 2 for transporting the film.
A plurality of upper and lower rollers 28 for guiding the rollers 6a are pivotally supported on the side surface of the main body frame 1. A motor 29 with a clutch brake is provided at the bottom of the main body frame 1. The motor 29 is equipped with a clutch brake for determining the length of film feed by using a clutch by counting the sine waveform of a pulse generator (not shown) attached to the rear of the motor. A gear 3 provided coaxially with the drive gear 30 and the film feeding rubber rollers 19 and 20.
1 and 32 and gears 33 and 34 provided coaxially with the rubber rollers 21 and 23 for driving the conveyor 9 and feeding the film are connected by a timing belt 35, and the timing belt 35 is connected to the outside of the upper gears 31 and 33. , the inner side of the lower gears 32 and 34, and the drive gear 30 in this order. Therefore, the motor 29 rotates intermittently at the film feed length pitch set in advance by adjusting the pulse generator, and the rotation of the motor 29 causes the timing belt 35, gears 31, 32,
The film feeding rubber rollers 39, 20 and the conveyor drive, the film feeding rubber rollers 21, 22 rotate through the conveyors 25, 33, 34.
26 drives. Therefore, the series of stretch films 7 pulled out from the roll body 8 are guided by the guide rollers 17 and 18 in a continuous state, and are moved between the pair of upper and lower rubber rollers 19 and 20 and the rubber roller 2.
1 and 22, and both ends of the stretch film 7 are connected to the film feeding traveling portions 25 of a pair of upper and lower endless conveyor belts 25 and 26.
a, 26a and is transported intermittently.

A support rod 36 is installed on the main body frame 1 at a position slightly above the stretch film 7 on the front end side of the film feeding traveling sections 25a and 26a, and the stretch film 7 is positioned below the support rod 36. A fixing plate 37 to which rubber or the like is attached is arranged to clamp and fix the front end side of the stretch film 7, and the fixing plate 37 is fixed to a pivot shaft 38 rotatably installed on the main body frame 1. One end of a link 39 is fixed to the drive shaft, and the other end of the link 39 is connected to a link 41 provided on the drive shaft of a torque motor 40 via an engagement groove 42 and an engagement roller 43. Therefore, when the link 41 is rotated by the drive of the torque motor 40, the link 39 is rotated via the engagement roller 43 and the engagement groove 42, and the pivot 38 is rotated. Board 3
7 rotates to clamp and fix the front end of the stretch film 7 to the receiving rod 36.

Further, on the rear end side of the endless conveyor belts 25, 26, running portions 25a, 26a for transporting the film are provided.
A pair of upper and lower pressing rollers 44 and 45 are disposed for pressing the stretch film 7 from both the upper and lower sides and suppressing the pulling out of the portion near the rear side of the perforation 16 of the stretch film 7. The movable body 46 is slidably provided on rails 47 provided in the front-rear direction on both sides of the main body frame 1, and a rack rod 48 is provided below the rails 47 in parallel with the rails 47. The movable body 46 is provided so as to be slidable in a direction, and the movable body 46 is attached to the rack rod 4.
8, and the rack tooth 49 of the rack rod 48
A pinion 52 that meshes with a drive gear 51 of a motor 50 is in mesh with the drive gear 51 of the motor 50. When the motor 50 is driven, a rack lever 48 slides through the drive gear 51, pinion 52, and rack teeth 49, and moves the movable body 46 onto the rail 4.
Move along 7. In this case, the motor 50 is connected to a clutch brake motor 29 that determines the film feed length of the film feeder C, and the pressure roller 44 is movably installed so that it is always positioned near the rear side of the perforation 16. ing.

In the above packaging machine, the main body frame 1 has a first
As shown in FIGS. 2 and 2, a cover 61 is provided. This cover 61 is integrally molded from synthetic resin, and as shown in FIGS.
The central chevron portion 63 on the side and the horizontal portion 6 on the side of the unloading device G
4, an opening 65 is formed on the center side of the inclined part 62 and the horizontal part 64, and an opening 6 on the inclined part 62 side
5 is attached with an opening/closing lid 61A. This opening/closing lid 61A is used when replenishing or replacing the roll body 8. Furthermore, side surfaces 66 are provided on the peripheries of the inclined portion 62, the chevron portion 63, and the horizontal portion 64, and an engaging recess is provided at the lower part of the side surface portion 66 in the portion along the left and right side plates 1A of the main body frame 1. A flange 67 facing towards the side is provided in succession. Further, on the outer surface side of the left and right side plates 1A of the main body frame 1, as shown in FIG. Or the reinforcing arm 6 of the cover 61
A shaft end fixing portion of an internal mechanism such as No. 8 is provided as a protrusion 69 which is an engaging convex portion. The synthetic resin cover 61 is mounted on the main body frame 1, and a flange 67 provided on a side surface 66 of the cover 61 is fixed by being engaged with the projection 69. Note that the cover 61 is preferably molded from a relatively soft synthetic resin that allows the side portions 66 to be slightly expanded.

Since the embodiment of the present invention is as described above, the synthetic resin cover 6 is lightweight and does not cause any damage to hands or fingers.
1 on the main body frame 1 and by engaging the flange 67 of the cover 61 with the protrusion 69, it can be easily fixed. The cover 61 can be easily removed by removing it from the cover 69. Furthermore, since the protrusions 69 can utilize the shaft end fixing portions inevitably formed on the outer surfaces of the left and right side plates 1A of the main body frame 1, there is no need to increase the number of parts for fixing the cover 61, and the protrusions 69
9 protrudes from the outer surface of the main body frame 1, so that it does not interfere with inspection and repair of the inside of the main body frame 1 and does not cause any inconvenience.

Furthermore, by opening the opening/closing lid 61A, the attachment point of the roll body 8 is opened, so that the roll body 8 can be easily replenished or replaced and the film 7 can be set while covered with the synthetic resin cover 61. be able to.

Note that the present invention is not limited to the above-mentioned embodiments, and various modified embodiments are possible within the scope of the gist of the present invention. For example, although the cover is shown as having an inclined part, a chevron-shaped part, and a horizontal part, its shape and structure may be changed as appropriate depending on the structure of the packaging machine or the shape of the main body frame. Further, although the shaft end fixing portion of the device is used as the protrusion as the engagement convex portion, a new protrusion may be provided. Further, the flange serving as the engaging convex portion may be partially formed at a location corresponding to the protrusion. Further, the flange may be formed at the lower part of the side surface portion or above it. Further, the engagement protrusion may be provided on the main body frame side and the engagement protrusion may be provided on the cover side.

An example of the overall configuration of the packaging machine is shown in Figures 1 and 2, but a film feeding device that clamps and feeds the film as in Japanese Patent Publication No. 56-35578 or Japanese Utility Model Publication No. 55-47992 is also available. Publication No., Tokukosho
A film folding device such as that disclosed in Japanese Patent No. 56-34484 may be used and may be selected as appropriate.

[Effect of idea]

The present invention includes a film supply device that feeds out a roll of stretch film and transfers it to a packaging section position, a packaged article supply device that transfers the packaged item onto a pedestal, and a film supply device that transfers the packaged item onto a pedestal, and a film supply device that transfers the pedestal to a position below the packaging unit position. A packaging machine comprising a pedestal lifting device that can be moved up and down with a cradle, a film folding device that folds the stretch film onto the underside of an object to be packaged, and a carrying-out device that carries out the package folded by the film folding device. , a synthetic resin cover is provided on the main body frame surrounding at least the full film supply device, the film folding device, and the pedestal lifting device, and the stretch film is attached to a portion of the synthetic resin cover that corresponds to the rolled stretch film. Equipped with an opening/closing lid for replenishing or replacing
An engaging protrusion is provided on one side of the outer surface of the main frame of the packaging machine and a lower part of the synthetic resin cover covered with the main body frame, and an engaging recess is provided on the other side, and the engaging protrusion and the engagement recess are provided on the other side. Since the cover is fixed to the body frame in a covered state by engaging the recesses in the recesses, it is easy to handle the cover, and there is no need to worry about the cover fixing member interfering with inspection or repair of internal devices. Moreover, the roll-shaped stretch film can be easily replenished or replaced with the cover covered, which is highly effective.

[Brief explanation of drawings]

Figure 1 is an overall vertical sectional view, Figure 2 is an overall plan view,
3 is a front view of the pressure roller mechanism; FIG. 4 is a plan view thereof; FIGS. 5A, B, C, and D are working state diagrams showing the packaging state; FIG. 6 is a perspective view of the cover as seen from the top;
FIG. 7 is a perspective view of the same as seen from the bottom surface, FIG. 8 is a front view showing a covered state, and FIG. 9 is a sectional view of the same. DESCRIPTION OF SYMBOLS 1... Body frame, 2... Packaging section, 3... Item to be packaged, 3a... Packaged item, 7... Stretch film, 8... Roll body, 9... Endless belt, 6
1... Cover, 67... Flange (engaging recess),
69... Protrusion (engaging protrusion), A... Packaged object supply device, B... pedestal elevating device, C... film supply device, D... film cutting device, E... film presser , F...film folding device, G...unloading device.

Claims (1)

[Scope of utility model registration request] A film supply device that feeds out a roll of stretch film and transfers it to the packaging unit position, a packaged item supply device that transfers the packaged item onto a pedestal, and the pedestal is movable up and down below the packaging unit position. A packaging machine comprising a pedestal elevating device, a film folding device for folding the stretch film onto the underside of an object to be packaged, and an unloading device for carrying out the package folded by the film folding device. A synthetic resin cover is provided on the main body frame that surrounds the feeding device, the film folding device, and the pedestal lifting device, and the stretch film is supplied or replaced at a portion of the synthetic resin cover that corresponds to the rolled stretch film. An opening/closing lid is provided for carrying out the operation, and an engaging protrusion is provided on one side of the outer surface of the main body frame of the packaging machine and a lower part of a synthetic resin cover covered with the main body frame, and an engaging recess is provided on the other side. A packaging machine characterized in that the cover is fixed to the main body frame in a covered state by a convex-concave engagement between the engaging protrusion and the engaging recess.