JPH082082Y2 - Stretch wrapping equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretch wrapping device, and more specifically, to a film wrapped around a film roll, which is pulled out from the rear side of the wrapping part to the same wrapping part, and which is placed under the film. Carry in the object to be packaged and raise the object to be packaged from underneath the film to wrap and package the film tip from the film roll placed and set on the roll set section in the stretch wrapping device in the film wrapping section. The present invention relates to a film set structure for.

[0002]

2. Description of the Related Art Heretofore, as this type of stretch wrapping device, for example, a device disclosed in Japanese Patent Application Laid-Open No. 4-339727 filed by the applicant of the present application has been known. However, in such a conventional apparatus, a roll setting unit for setting and setting a film roll is disposed on the back side of the machine frame at the rear of the packaging unit, and the leading end of the film pulled out from the film roll is locked and held. Place a pair of upper and lower comb-shaped film holding parts that form a film tip holding part that serves as a pull-out part for horizontally pulling out the film into the packing part when both are placed facing the packing part with an appropriate gap. The following problems remained because of the installation. ． When replacing the roll when the film on the roll is completed, the operator must bring a new roll to the back side of the apparatus and set it in the roll set section. ． After pulling out the film tip from the roll on the back side of the device, while pulling the tip while passing along each of the guide rollers arranged along the film feeding path leading to the film tip holding portion of the packaging section,
The tip of the film is held between a pair of upper and lower film holding portions whose upper side can be opened and closed with respect to the lower side facing the lower side with an appropriate gap of the film front side holding portion, and the upper film holding portion is inserted and inserted. Must be set.

Therefore, in the conventional apparatus, the film roll must be carried from the front of the machine frame to the back side of the machine provided in the roll setting section. Then, after being set in the roll setting section, the operator must pull the film tip to the film tip holding section of the wrapping section while laying the film tip along a complicated film feeding path in a posture of bending the body, It is very troublesome and time-consuming, and smooth packaging work cannot be expected. At the same time, since the work space must be secured around the device, the occupied area becomes large and the installation place of the device is limited.
Also, when the film tip is extended to the film tip holding part and pulled around, it is necessary to take care so that the film with self-adhesiveness does not stick to the middle of the path, so the operator needs to be careful. , Requires skill.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and the feeding of the film tip to the film tip holding section of the packaging section and the set holding of the tip with respect to the film tip holding section. It is an object of the present invention to provide a stretch wrapping device having a film setting structure which can be quickly and simply carried out and can be set in a roll setting section of a film roll from the front side.

[0005]

To achieve the above object, the technical means taken by the present invention is to pull out the film wound on a film roll from the rear side of the packaging unit to the packaging unit and make it stand by. In addition, in a stretch wrapping device for carrying in an object to be packaged under the film and ascending and pushing up the object to be packaged from below the film, a roll set for placing and setting a film roll at a position above the wrapping section And a pair of upper and lower film holding parts formed in a comb shape to form a film leading end holding part for holding the leading end of the film pulled out from the film roll on the surface of the packaging part below the roll setting part. And a rotation mechanism for rotating the upper film holding portion between the film front end holding portion position and the roll setting portion lower position. And butterflies. Further, the roll setting unit is arranged at a position above the packaging unit where the film roll can be placed and set from the front side of the packaging unit. Further, a film guide roller is axially provided in the vicinity of an upper portion of the upper film holding portion which constitutes the film leading end holding portion, and is configured to be moved together with the upper film holding portion by a rotating mechanism.

[0006]

According to the above-mentioned technical means according to claim 1 of the present invention, the upper film holding portion of the film front end holding portion is set in the roll setting portion above the packaging portion by the rotating mechanism. After rotating to the existing film roll, hook the film tip around the comb-teeth part of the film holding part, and then rotate the film holding part by the rotating mechanism to hold the film end of the packaging part. By returning to the section, the film tip can be inserted and set between the film tip holding section and the lower film holding section. Further, according to the technical means of the second aspect, it is possible to perform the roll exchanging work for removing the roll having the film finished on the front side of the apparatus from the roll setting section and setting a new film roll. Further, according to the technical means as set forth in claim 3, when the upper film holding portion having the film leading end hooked therein is turned back to the film leading end holding portion of the packaging portion by the turning mechanism, the upper film holding portion is fed out from the film roll. The film to be guided can be drawn out to the film tip holding part of the packaging part while being guided along the guide roller.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the entire stretch wrapping device of the present embodiment. A carrying-in section C for loading a product) is arranged on the front side of the apparatus frame 4, and a film 2 for packaging the product 1 is stretched by being horizontally drawn out from the film front end holding section A and stretched. The wrapping portion D to be hung is arranged on the upper surface of the machine frame 4, and the leading edge of the film 2 held by the film leading end holding portion A is held at the front and rear positions in the film drawing direction of the wrapping portion D. A film withdrawing mechanism E for pulling out the film 2 from the film roll 3 on the roll setting section B for a predetermined length and transferring the pulled out film 2 to a predetermined position of the packaging section D, a rear clamp mechanism F, and a leading edge of the film 2 and Quoting the trailing edge The longitudinal folding mechanism G that folding the first bottom side respectively disposed. Then, on both sides of the packaging portion D intersecting the drawing direction, right and left clamps for grasping both side edges in the width direction of the film 2 drawn out and transferred to a predetermined position and extending the film 2 by a predetermined amount in the width direction. A mechanism H and a left-right folding mechanism I that folds the left and right side edges of the film 2 to the bottom side of the product 1 are respectively arranged, and a carrier table J that drives the product 1 received from the carry-in part C to the packaging part D is driven. It is supported by the mechanism K and is movably arranged in the machine frame 4 in the horizontal direction and the vertical direction, and grasps the leading edge of the film 2 set and held in the film leading end holding section A by the film drawing mechanism E. At least a predetermined length of the film 2 is pulled out from the film roll 3 to the wrapping section D, and the film 2 is transferred to a predetermined position of the wrapping section D in cooperation with the rear clamp mechanism F and at the same position. By pulling the left and right side edges of the film 2 in a direction in which the left and right side edges of the film 2 are held and extended by the cooperation of the left and right folding mechanism I and the left and right clamping mechanism H, the film 2 is stretched by a predetermined amount and made to stand by. , The carrier J from below the film 2 is moved horizontally by the drive mechanism K and vertically moved to the loading section C.
After ascending and pushing up the commodity 1 received from the upper surface, the leading edge and the rear edge of the film 2 and the left and right side edges are folded into the bottom side of the commodity 1 by the front and rear folding mechanism G and the left and right folding mechanism I. Is configured to wrap the product 1.

The specific construction and operation of the film pull-out mechanism E, the rear clamp mechanism F, the front / rear folding mechanism G, the left / right clamping mechanism H, the left / right folding mechanism I, the transport table J, the driving mechanism K, etc. are applied to the present application. Japanese Patent Application No. 4-320922 (Japanese Patent Application Laid-Open No. 6-156412) and Japanese Patent Application No. 4-320923 filed previously by a person
Japanese Patent Application Laid-Open No. 6-156416, Japanese Patent Application No. 4-320924 (Japanese Patent Application Laid-Open No. 6-3
29105) and Japanese Patent Application No. 4-320925 (Japanese Patent Application Laid-Open No. 6-329106) and the drawings, which are not directly related to the invention of the present application, and the detailed description thereof is omitted here.

The roll setting section B supports both ends of the roll shaft 3a of the film roll 3 and supports the film roll 3 so that the film roll 3 is rotatably set and held in accordance with the drawing speed of the film 2. 4 The upper end of the standing frame 5 which is erected at an appropriate height upward from both sides on the rear surface side is made to project horizontally toward the front, and the projecting end portion is positioned above the packaging part D. In addition, the operator is allowed to place the film roll 3 from the front side of the apparatus.
Then, the recessed portions 6 for supporting and supporting the roll shaft 3a are provided on the upper sides of both the projecting end portions, and the support rollers 7 are attached to the recessed portions 6 along the arc edges of the recessed portions 6 to make the roll shaft 3a smooth. It is configured to rotate to.

The film leading edge holding portion A is gripped by the leading edge of the film 2 immediately after being pulled out from the film roll 3 and the film pulling-out mechanism E, and the film 2 is pulled out to the packaging portion D by a predetermined length. This is for holding the leading edge (cutting edge) of the film 2 immediately after it is cut by the film cutting mechanism L so that it is gripped by the film drawing mechanism E for each package, and a pair of upper and lower comb teeth are formed. Of the film holding parts A-1 and A-2 of the film 2 which are drawn horizontally by the film drawing mechanism E below the roll setting part B and behind the packaging part D (drawing level height position). The upper and lower parts are arranged to face each other with an appropriate gap. The film front end holding portion A configured as described above
In the above, the lower film holding section A-2 is formed into a flat rectangular shape with a length across both width directions of the apparatus frame 4,
A film hooking portion 8 having a continuous uneven shape is formed on the front edge of the upper portion, which is fixedly arranged at the rear position of the packaging portion D, while the upper film holding portion A-1 is a lower film holding portion. A film hooking portion 9 having a continuous concavo-convex shape is formed on the front edge so as to be opposed to A-2 with an appropriate gap so that the leading edge of the film 2 can be inserted and interposed. The holding edge portion 10 and the holding edge portion 10 are bent at a right angle from the trailing edge of the holding edge portion 10 and further inclined in the middle to move the holding edge portion 10 from the facing position on the lower film holding portion A-2 to the film setting portion B. It is formed in a substantially L shape from a continuous side portion 11 continuously formed so as to be movable to a lower position, and an upper end of the continuous side portion 11 is a rotation shaft 13 of a rotation mechanism 12 described later. The gripping side portion 10 is fixedly supported on the lower film holding portion A-2 by the rotating operation of the rotating mechanism 12, and the film 2 is held. It is configured so as to be opposed to each other with an appropriate gap so that the set can be held with the leading edge inserted and interposed.

In the figure, 14 is a guide roller axially mounted behind the right-angled portion (vertical portion) of the continuous side portion 11 of the upper film holding portion A-1, and this guide roller 14 transfers the film 2 from the film roll 3 to the guide roller 14. When the film 2 is pulled out and set and held in the film leading edge holding portion A, the film 2 is prevented from touching the continuous side portion 11, and the leading edge set and held in the film leading edge holding portion A is set in the film drawing mechanism E. When the film 2 is gripped and pulled out to the wrapping section D, the film 2 is smoothly contacted without the contact of the continuous side portion 11.
Provide these guidance so that you will be drawn to.

The rotating mechanism 12 is arranged between the roll setting section B and the film leading edge holding section A, and the holding side portion 10 of the upper film holding section A-1 of the leading edge holding section A is connected to the lower film. The upper film holding part A-1 is used to rotate the holding part A-2 from above to below the roll setting part B.
The rotating shaft 13 for firmly supporting the upper end of the continuous side portion 11 of the
A rotatable horizontal crossing is provided between the upright frames 5 on both sides, and a gear 15 is fixedly attached to a protruding portion of one end of the rotating shaft 13, and the upper film holding portion A-1 is rotated to the roll setting portion B side. A positioning disc 16 for fixing the holding edge portion 10 having the film hooking portion 9 to its lower position when moved, and
An operating handle 17 that has a tooth portion that meshes with and is connected to the gear 15 and that rotates the rotating shaft 13 via the gear 15 is rotatably mounted on the standing frame 5. In the figure, reference numeral 18 denotes a stopper pin, and a notch portion 19 provided on the outer periphery of the positioning disk 16 is abuttingly engaged with the stopper pin 18 so that a lower position thereof near the film roll 3 of the roll set portion B is brought about. Then, the holding side portion 10 of the upper film holding portion A-1 is stopped, and the leading edge of the film 2 is wound around the film holding portion 9 of the holding side portion 10 so that the work can be performed. (See Figure 5). In the figure, reference numeral 20 denotes a positioning locking portion arranged on both inner surfaces of the machine frame 4 in which the lower film holding portion A-2 is arranged. On the positioning locking portion 20, the upper film holding portion A- By engaging and locking the claw pieces 21 provided on both sides of the continuous side portion 11 of 1, the lower film holding portion A-
The upper edge of the upper film holding portion A-1 is held parallel to the upper film holding portion A-1 with an appropriate gap so that the positioning can be performed (see FIGS. 6 and 7). In the figure, 22 and 23 are springs having one end attached to each predetermined position of the positioning disk 16 and the operation handle 17 and the other end attached to the standing frame 5.
Is operated by rotating the upper film holding part A-1 upward by the operation handle 17 and moving the holding side part 10 to the lower position of the film roll 3, and the outer circumference of the positioning disk 16 with respect to the stopper pin 18 is moved. The notch 19 holds the abutting engagement state (see FIG. 5). On the other hand, the spring 23 acts by operating the operation handle 17 to rotate the upper film holding part A-1 downward so that the holding side part 10 is positioned opposite to the lower film holding part A-2. It holds the state (see FIGS. 6 and 7).

Thus, according to the stretch wrapping apparatus of this embodiment having the film set structure constructed as described above, the outer peripheral cutout portion 19 of the positioning disk 16 is the stopper pin.
By operating the operation handle 17 until it abuts against 18, the upper film holding part A-1 is turned upward with the turning shaft 13 as a fulcrum to move the holding side part 10 to the roll setting part B above the packaging part G. It is positioned below the film roll 3 placed and set on. At this time, the spring 22 acts to hold the sandwiched side portion 10 at the lower position of the film roll 3, so that the state is maintained even when the operation handle 17 is released (state of FIG. 5). Then, after grasping the leading edge of the film 2 which is wound around the film roll 3 and hangs down with both hands, and pulling out the film 2 from the film roll 3 until the leading edge engages with the film hooking portion 9 of the holding side portion 10, the film 2 The leading edge is hooked around the film hooking portion 9 (see FIG. 3). After that, by operating the operation handle 17 until the claw pieces 21 provided on both sides of the upper film holding portion A-1 hit the positioning locking portions 20 on both inner surfaces of the machine frame 4, the upper film holding portion A- 1 is a position where the holding side portion 10 on which the leading edge of the film 2 is hooked is turned downward while the drawing shaft 2 is pulled out from the film roll 3 and is turned around a turning shaft 13 as a fulcrum, on the lower film holding portion A-2. Let's hold the holding part A-
The leading edge of the film 2 is inserted and interposed between the two. At this time, the spring 23 acts to move the holding edge portion 10 to the lower film holding portion.
A-2 Fix and hold on top. As a result, the setting of the leading edge of the film 2 on the film leading edge holding section A of the packaging section D is completed (see FIGS. 6 and 7).

In the above embodiment, the rotary shaft 13
The operation handle 17 arranged at a position operable from the front side of the apparatus is rotated by a manual operation by an operator to move the upper holding section A-1. The specific configuration for rotating the holding section A-1 is not limited to the configuration described in detail in the embodiments. For example, the rotation of the upper holding portion A-1 may be automatically performed by a driving means such as a motor. In this case, the starting switch of the driving means is arranged at a position operable from the front side of the device.

[0015]

Since the stretch wrapping device of the present invention is constructed as described above, it has the following operational effects. ． After rotating the upper film holding part of the film front end holding part to the position below the roll setting part arranged above the packaging part by the rotating mechanism, the film is wound around the film roll set in the roll setting part. By hooking the end of the film being wound around the comb teeth of the upper film holding part, and then turning the upper film holding part by the turning mechanism and returning it to the film end holding part of the packaging part,
A film tip can be inserted and set between the film tip holding section and the lower film holding section.
Therefore, the leading end of the film from the film roll to the film leading end holding portion of the packaging portion and the set holding of the leading end of the film leading end holding portion can be performed more quickly and simply than in the conventional device. As a result, smooth packaging work can be expected. Moreover, since the remaining amount of the film can be constantly checked while performing the packaging work, troubles such as the device stopping in the middle of the operation due to lack of the film will not occur. Further, since it is not necessary to wrap around the back side of the device and put a hand inside the device to draw the film to the film front end holding part of the packaging part, it is possible to perform the work safely. ． Since the roll setting unit is arranged at a position above the packaging unit where the film roll can be placed and set from the front side of the packaging unit, when the film is finished or when the film is replaced, the roll is removed from the roll setting unit, Then, these roll changing operations for setting a new film roll can be performed on the front side of the apparatus. Therefore, unlike the conventional apparatus, it is not necessary to secure a work space around the apparatus for bringing the film roll to the back side of the apparatus, so that the installation location of the apparatus is not restricted. ． A film guide roller is provided around the upper part of the upper film holding part which constitutes the film leading end holding part so that it is moved by a rotating mechanism together with the upper film holding part. When the upper film holding part is turned back to the film tip holding part of the packaging part by the turning mechanism, the film fed out from the film roll is guided to the guide roller and pulled out to the film tip holding part of the packaging part. You can

[Brief description of drawings]

FIG. 1 is a side view showing an example of implementation of a stretch wrapping device of the present invention.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is a perspective view of a main part showing a form in which a leading end of a film is hooked on a comb tooth portion (film hooking portion) in an upper film holding portion.

FIG. 4 is a perspective view of an essential part showing a state in which the leading end of the film is inserted and interposed between a lower film holding portion and an upper film holding portion.

FIG. 5 is a side view showing a state in which the upper film holding portion is rotated to a position below the roll setting portion.

FIG. 6 is a side view showing a state in which the upper film holding portion is rotated to the film front end holding portion of the packaging portion and is positioned to face the lower film holding portion of the front end holding portion.

7 is a longitudinal sectional view showing the state of FIG. 6 in an enlarged manner.

[Explanation of symbols]

1 ... Object to be packaged (product) 2 ... Film A ... Film tip holding part A-1 ... Upper film holding part A-2 ... Lower film holding part B ... Roll setting part D ... Wrapping part 14 ... Guide roller

Claims (3)

[Scope of utility model registration request] 1. A film wound around a film roll is pulled out from the rear side of the packaging unit into the packaging unit, and the packaged item is carried under the film and is packaged from below the film. In a stretch wrapping device for ascending and pushing up an object, a roll set part for placing a film roll is provided above the wrapping part, and a film roll is provided on the wrapping part surface below the roll set part. A pair of upper and lower film holding parts formed in a comb shape forming a film leading end holding part for holding the film leading end pulled out from the film are arranged opposite to each other, and the upper film holding part is located at the film leading end holding part position and roll. A stretch wrapping device, wherein a rotating mechanism for rotating to a position below the setting portion is provided. 2. The stretch wrapping apparatus according to claim 1, wherein the roll setting section is disposed above the wrapping section on which the film roll can be placed from the front side of the wrapping section. 3. A film guide roller is axially mounted near the upper part of the upper film holding part which constitutes the film leading end holding part, and is configured to be moved together with the upper film holding part by a rotating mechanism. The stretch wrapping device according to claim 1 or 2.