JPH0654504U - Stretch wrapping equipment - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] The film tip can be fed to the film tip holder of the packaging section, and the set of the tip can be held quickly and simply. (EN) Provided is a stretch wrapping device having a film setting structure capable of setting a roll in a roll setting section from the front side. [Structure] A roll set section B for mounting a film roll 3 is provided above the packaging section D, and the tip of the film 2 pulled out from the film roll 3 is provided on the surface of the packaging section D below the roll set section B. A pair of upper and lower film holding parts A-1 and A-2 formed in a comb shape and constituting the film leading end holding part A are arranged to face each other, and the upper film holding part A-1 holds the film leading end. A rotating mechanism 12 for rotating the position A and the position below the roll setting unit B is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stretch wrapping device, and more specifically, pulls out a film wound on a film roll from the rear side of the wrapping part to the waiting part and carries the article to be packed under the film. , A film set structure for holding the leading edge of a film from a film roll set on a roll setting section of a stretch wrapping device for ascending and pushing up an object to be wrapped from under the film It is a thing.

[0002]

[Prior art and its problems]

 Conventionally, as this type of stretch wrapping device, for example, the device disclosed in Japanese Patent Application Laid-Open No. 4-339727 filed by the applicant of the present application is known. However, in such a conventional device, the roll setting part for placing and setting the film roll is disposed on the back of the machine frame behind the packaging part, and the leading end of the film pulled out from the film roll is locked and held. Placed in a comb-like shape that forms a film tip holding part that serves as a drawer for horizontally pulling out the film during packaging. However, the following problems remain. ． When the roll is replaced when the roll is finished, the operator must bring a new roll to the back of the machine and set it in the roll setting section. ． On the back side of the device, pull out the film tip from the roll, and while pulling it along the film feeding path leading to the film tip holding section of the packaging section and passing through each guide roller arranged in the path, The tip of the film is held between the pair of upper and lower film-holding parts with the upper end of the film-holding part opened with an appropriate gap of the film-end holding part. I have to set it.

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. After setting on the roll set, the worker must bend the body to the film tip holding part of the wrapping part while keeping the film tip along the complicated film feeding path. Therefore, it is very troublesome and troublesome, 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. In addition, the operator pays attention to the fact that the film with self-adhesiveness must be taken care not to stick to the middle of the route when the film front end is extended to the film front end holding part and pulled around. It is necessary and requires skill.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of such conventional circumstances, and it is possible to quickly and simply feed the film leading end to the film leading end holding portion of the packaging portion and hold the set at the leading end of the film leading end holding portion. An object of the present invention is to provide a stretch wrapping device having a film set structure that can be set in a roll set section of a film roll from the front side.

[0005]

[Means for achieving the object]

 The technical means taken by the present invention to achieve the above object is to pull out the film wound on the film roll from the rear side of the packaging unit to the same packaging unit, and to wait the film. In a stretch wrapping device that carries in an item and wraps up an item to be packaged from below the film, a roll set part for placing and setting a film roll is provided above the wrapping part. A pair of upper and lower film holding parts formed in a comb-tooth shape which constitutes a film leading end holding part for holding the leading end of the film pulled out from the film roll is disposed opposite to the packaging part surface on the lower side of the roll setting part, Further, a rotating mechanism for rotating the upper film holding portion between the film front end holding portion position and the roll setting portion lower position is provided. 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 mounted near the upper portion of the upper film holding portion which constitutes the film leading edge holding portion, and is configured to be moved together with the upper film holding portion by a rotating mechanism.

[0006]

[Work]

 According to the above-mentioned technical means according to the first aspect of the present invention, a film in which the upper film holding portion of the film front end holding portion is set in the roll set portion above the packaging portion by the rotating mechanism. After rotating to the roll, the film tip is hooked around the comb teeth of the film holding part, and then the film holding part is turned by the turning mechanism so that the film tip holding part of the packaging part is held. By returning the film, the film front end can be inserted and set between the film front end holding portion and the lower film holding portion. Further, according to the technical means described in claim 2, it is possible to perform the roll exchanging work for removing the roll of which the film is finished from the roll setting section on the front side of the apparatus and for 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 front end hooked thereon is rotated and returned to the film front end holding portion of the packaging unit by the rotation mechanism, The unwound film can be pulled out to the film tip holding part of the wrapping part while being guided along the guide roller.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the whole of the stretch packaging apparatus according to the present embodiment. ) Is placed on the front side of the machine frame 4, while the film 2 for wrapping the product 1 is pulled out horizontally from the film front end holding section A and stretched in a stretched state. The wrapping section D is arranged on the upper surface of the machine frame 4, and the front and rear positions of the wrapping section D in the film withdrawing direction are gripped by the leading edge of the film 2 held by the film leading end holding section A to set the roll. The film 2 is pulled out from the film roll 3 on the portion B by a predetermined length, and the pulled-out film 2 is transferred to a predetermined position in the packaging portion D, the rear clamp mechanism F, the leading edge and the rear end of the film 2. Edge 1 Respectively disposed before and after folding mechanism G which folded on the bottom side. Then, both sides of the width direction of the film 2 which has been drawn out and transferred to a predetermined position are grasped on both sides of the packaging section D which intersects the drawing direction, and at the same time, the film 2 is expanded by a predetermined amount in the width direction. A left and right clamp mechanism H and a left and right folding mechanism I that folds both left and right edges of the film 2 to the bottom side of the product 1 are respectively arranged, and the product 1 received from the carry-in section C is conveyed to the packaging section D. The base J is supported by the drive mechanism K and is movably arranged in the apparatus frame 4 in the horizontal direction and the vertical direction, and the film 2 which is set and held in the film front end holding section A by the film drawing mechanism E is set. The film 2 of a predetermined length is pulled out from the film roll 3 to the wrapping section D by gripping the leading edge, and the film 2 is transferred to the predetermined position of the wrapping section D in cooperation with the rear clamp mechanism F. At the position, the left and right edges of the film 2 are held and stretched by a predetermined amount in the width direction of the film 2 by pulling in the direction in which the left and right edges of the film 2 are gripped and extended by the cooperation of the left and right folding mechanism I and the left and right clamping mechanism H. After that, the carrier J from the bottom of the film 2 pushes up the commodity 1 received from the carry-in section C to the upper surface by the horizontal movement and the vertical movement of the drive mechanism K, and then the leading edge and the rear edge of the film 2 The edge and the left and right side edges are configured to wrap the product 1 by being folded to the bottom side of the product 1 by the front and rear folding mechanism G and the left and right folding mechanism I.

The specific configurations and operations of the film pull-out mechanism E, the rear clamp mechanism F, the front and rear folding mechanism G, the left and right clamp mechanism H, the left and right folding mechanism I, the transport table J, the driving mechanism K, etc. are applied to the present application. It is described in detail in the specification and drawings of Japanese Patent Application No. 4-320922, Japanese Patent Application No. 4-320923, Japanese Patent Application No. 4-320924, and Japanese Patent Application No. 4-320925, which were previously filed by a person. Since it is not directly related to the present invention, a detailed description thereof will be omitted here.

The roll setting section B supports and supports both ends of the roll shaft 3a of the film roll 3 to rotatably set and hold the film roll 3 according to the drawing speed of the film 2. 4 From the both sides on the rear surface side, the upper end of the standing frame 5 which is erected at an appropriate height from the both sides upwards 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. Further, the concave portions 6 for supporting and supporting the roll shaft 3a are provided on the upper sides of both the projecting end portions, and the supporting rollers 7 are attached to the concave portions 6 along the arc edges of the concave portions 6 so that the roll shaft 3a is It is configured to rotate smoothly.

The film leading edge holding section 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 section D by a predetermined length. The film 2 immediately after being cut by the film cutting mechanism L is for holding the leading edge (cutting edge) of each package so as to be held by the film drawing mechanism E, and is formed in a comb tooth shape. A pair of upper and lower film holding parts A-1 and A-2 are provided below the roll setting part B and behind the wrapping part D by a film drawing mechanism E to horizontally draw out the film 2 (drawing level surface). It is configured so as to face each other with an appropriate gap above and below. In the film front end holding portion A configured as described above, the lower film holding portion A-2 is formed in a flat rectangular shape with a length across the width direction of both sides of the machine frame 4, and faces the packaging portion D direction. The film retaining portion 8 having a continuous concavo-convex shape is formed on the front edge thereof and is fixedly arranged at the above-mentioned rear position of the packaging portion D, while the upper film holding portion A-1 is arranged on the lower film holding portion A. -2 The film hooking portion 9 is formed in the same rectangular shape and has a continuous uneven shape and is formed on the front edge so as to be opposed to each other with an appropriate gap so that the leading edge of the film 2 can be inserted and interposed. The side portion 10 and the rear edge of the holding side portion 10 are bent at a right angle from the middle and further inclined so that the holding side portion 10 is located below the film setting portion B from the facing position on the lower film holding portion A-2. It is formed in a substantially L shape from the continuous side portion 11 which is continuously formed so as to have a length that can be moved to a position. , The upper end of the continuous side portion 11 is fixedly supported by a rotating shaft 13 of a rotating mechanism 12 which will be described later, and the holding side portion 10 is lifted by the rotating operation of the rotating mechanism 12 on the lower film holding portion A-2. In addition, the film 2 is arranged so as to face each other with an appropriate gap so that the film 2 can be set and held with the leading edge inserted.

In the figure, 14 is a guide roller axially mounted behind the right-angled part (vertical part) of the continuous side part 11 of the upper film holding part A-1, and this guide roller 14 is adapted to load the film 2 from the film roll 3 When the film 2 is pulled out and the leading edge thereof is set and held in the film leading edge holding portion A, the film 2 does not touch the continuous side portion 11, and the leading edge set and held in the film leading edge holding portion A is the film drawing mechanism E. These guides are provided so that the film 2 can be smoothly pulled out to the wrapping portion D without being touched by the continuous side portion 11 when the film 2 is pulled by the wrapping portion D and pulled out to the wrapping portion D.

The rotating mechanism 12 is arranged between the roll setting section B and the film front end holding section A, and the holding side section 10 of the upper film holding section A-1 of the front end holding section A is connected to the lower film side. This operation is performed by rotating the holding part A-2 from above to the lower position of the roll setting part B. The rotation shaft 13 for fixing and supporting the upper end of the continuous side part 11 of the upper film holding part A-1 is fixed. The wrapping section D is horizontally rotatably disposed between the standing frames 5 on both sides, and the gear 15 is fixedly attached to the protruding portion of one end of the rotating shaft 13, and the upper film holding section A-1 is provided with the roll setting section B. A holding disk 16 for positioning the holding edge portion 10 having the film hooking portion 9 when it is rotated to the side, is fixedly provided, and has a tooth portion for meshingly connecting with the gear wheel 15. An operating handle 17 for rotating the rotating shaft 13 via 15 is rotatably mounted on the standing frame 5. And composed. In the figure, reference numeral 18 denotes a stopper pin, and a notch portion 19 provided on the outer circumference of the positioning disk 16 is abuttingly engaged with the stopper pin 18 so that the lower position of the roll set portion B near the film roll 3 is lowered. Then, the holding edge 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 hooking portion 9 of the holding edge portion 10 so that the work can be performed. (See Figure 5). In the figure, reference numeral 20 denotes a positioning locking portion provided 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 is provided. -By engaging and locking the claw pieces 21 provided on both sides of the continuous side portion 11 of -1, the holding side portion 10 of the upper film holding portion A-1 is appropriately placed on the lower film holding portion A-2. It can be positioned in parallel with a gap (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 upright frame 5, and the spring 22 is operated by the operation handle 17 to hold the upper film holding portion A. -1 is turned upward and the holding side part 10 is moved to the lower position of the film roll 3 to act, so that the notch 19 of the notch 19 on the outer circumference of the positioning disk 16 with respect to the stopper pin 18 is locked. It holds the state (see FIG. 5). On the other hand, the spring 23 acts by operating the operation handle 17 to rotate the upper film holding portion A-1 downward so that the holding side portion 10 is positioned opposite to the lower film holding portion A-2, The state is maintained (see FIGS. 6 and 7).

Therefore, according to the stretch packaging device of this embodiment having the film set structure configured as described above, the operation is performed until the outer peripheral cutout portion 19 of the positioning disc 16 abuts on the stopper pin 18. When the handle 17 is operated, the upper film holding portion A-1 is rotated upward with the rotation shaft 13 as a fulcrum, and the holding side portion 10 is placed and set on the roll setting portion B above the packaging portion G. It is located below the film roll 3. At this time, the spring 22 acts to hold the holding edge 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 in FIG. 5). 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 leading edge of the film 2 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 structure in which the film 2 is pulled out from the film roll 3 and is rotated downward about a rotation shaft 13 as a fulcrum so that the holding edge portion 10 on which the leading edge of the film 2 is hooked faces the lower film holding portion A-2. Then, the leading edge of the film 2 is inserted between the holding part A-2 and the holding part A-2. At this time, the spring 23 operates to fix and hold the holding edge portion 10 on the lower film holding portion A-2. As a result, the setting of the leading edge of the film 2 on the film leading end holding portion A of the packaging portion D is completed (see FIGS. 6 and 7).

In the above-described embodiment, the rotating shaft 13 is rotated by the operator manually operating the operation handle 17 arranged at a position operable from the front side of the apparatus. Although the configuration in which the upper holding portion A-1 is moved is adopted, the specific configuration for rotating the holding portion A-1 is not limited to the configuration form detailed in the embodiment. For example, it is conceivable that the upper holding part A-1 is automatically rotated by a driving means such as a motor. In this case, the starting switch of the driving means is arranged at a position where it can be operated from the front side of the device.

[0015]

[Effect of device]

 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 set part arranged above the packaging part by the rotating mechanism, the film roll set in the roll set part is rotated. The leading edge of the wound film is hooked around the comb-teeth part of the upper film holding part, and then the upper film holding part is turned by the turning mechanism and returned to the film leading end holding part of the packaging part. Thus, the film tip can be inserted and set between the film tip holding portion and the lower film holding portion. Therefore, it is possible to pull out the film front end from the film roll to the film front end holding part of the wrapping part and hold the set end of the film front end holding part 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 checked at all times during the packaging work, there is no possibility of causing troubles such as the device stopping in the middle of operation due to lack of film. Further, since there is no need to go around the back side of the device and put a hand inside the device to draw the film around to the film tip holding part of the packaging part, it is possible to perform the work safely. ． Since the roll setting part is located above the wrapping part where the film roll can be placed and set from the front side of the wrapping part, remove the roll from the roll setting part when the film is finished or when the film is replaced. 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 device, it is not necessary to secure a work space around the device to bring the film roll to the back side of the device, and therefore, the installation location of the device is not restricted. ． A film guide roller is provided around the upper part of the upper film holding part that constitutes the film leading edge holding part so that it can be moved together with the upper film holding part by a rotating mechanism. When the upper film holding part is rotated and returned to the film tip holding part of the packaging part by the rotating mechanism, the film fed from the film roll is guided to the guide roller and guided to the film tip holding part of the packaging part. Can be withdrawn.

[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 a perspective view showing an enlarged main part.

FIG. 3 is a perspective view of an essential part showing a form in which the tip of the film is hooked to a comb tooth part (film hooking part) in the upper film holding part.

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.