JPH0717520A - Film original fabric loading device in packaging machine - Google Patents

Abstract

(57) [Abstract] [Purpose] As the film raw material 6 is set on the supporting member 16 and rotated to continuously feed out the film 6B, the winding amount of the film original fabric 6 is gradually reduced, and the supporting member 16 is gradually increased. Moves downward in the guide groove 15 provided in the holding member 10 in the vertical direction, so that the film material 6 is always placed on the placing rollers 4 and 5, and the holding member 10 and the supporting member 16 are used. It is stably supported and sends out the film 6B. [Structure] A screw rod 7 which is erected on a main body frame 1 and is formed with a freely rotatable left screw part and a right screw part. A pair of clamping members 10 which are respectively screwed to the left and right screw portions of the screw rod 7 and clamp the film original fabric 6 from both ends. This holding member
Guide grooves 15 provided on each of 10 in the vertical direction. A support member 16 is inserted through each of the guide grooves 15 so as to be vertically movable. Mounting rollers 4 and 5 which are laid on the main body frame 1 and on which the original film 6 is mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film stock loading device in a packaging machine for rotatably supporting a film stock and delivering the film.

[0002]

2. Description of the Related Art Generally, a packaging machine using a film material roll rotates a set film material roll to continuously feed the film, and in the course of feeding and moving, a packaged object such as food is sealed. It is configured to be packed and carried out.

By the way, as a film original fabric loading device in such a packaging machine, for example, an actual Kaihei 1-110,
The structure proposed in Japanese Patent Laid-Open No. 109 is known. This is to support both ends of two rolls for loading the film original on the machine bases on both sides, and to support the pair of blocks slidably on the guide bars installed on the machine bases on both sides, while Right and left screws at both ends of a handle shaft rotatably provided between the machine bases in parallel with the machine bases are screw-engaged with the both blocks, respectively, and both outer ends of the core rod of the film raw film are sandwiched between the blocks. A rotatably provided nip roll for preventing lateral movement of the film raw material when the film raw material is fed, and the film raw material is prevented from falling by abutting the side face of the core rod from both the blocks on the film feeding side. It is configured by providing a locking piece for preventing.

[0004]

In the above-mentioned prior art, since the sandwich roll is sandwiched between both outer ends of the core rod of the film raw material, and the locking piece is abutted on the side surface of the core rod, the film original material is abutted. This is effective in preventing the lateral movement of the film and the drop of the film in the feeding direction.However, when the film is fed out, a frictional resistance is applied to the clamping and abutting points, and this frictional resistance causes the film to be fed out stably. If the both ends or the side surface of the core rod has a rough shape due to scratches or the like, the frictional resistance may not be constant and the feeding may be more unstable. . In addition, since the original weight of the original film acts directly on the roll for placing the original film, the change in the original weight due to the decrease in the winding amount of the original film due to the film feeding directly affects the change in the tension of the film to be sent. The film tension may not be constant, and the film may be bent when the object to be packaged is wrapped.

In view of the above problems, an object of the present invention is to provide an original film loading device for a packaging machine which can always feed a film with a stable tension without causing frictional resistance to the rotating original film. .

[0006]

SUMMARY OF THE INVENTION The present invention is a film material loading device for feeding a film by setting a film material on a support member and rotating the film, which is installed on the left and right side plates of the main body frame. A screw rod having a left screw portion and a right screw portion that are rotatable by providing a handle at an end of the screw rod; and screw screws arranged on the left and right screw portions of the screw rod respectively by operating the handle. A pair of sandwiching members that are movable in the axial direction of the rod and sandwich the film stock from both ends, guide grooves provided in each of the pair of sandwiching members in the vertical direction, and vertically movable in each of the guide grooves. And a supporting member having a rotating portion capable of contacting and supporting the inner peripheral surface end portion and the outer end portion of the film original fabric, and a film original fabric that is erected on the left and right side plates of the main body frame and rotates. Publication Is that equipped with mounted rollers, the for.

[0007]

With the reduction of the winding amount of the film original film by setting the film original film on the supporting member and rotating it to continuously feed the film, the guide groove is gradually provided by the supporting member in the longitudinal direction of the holding member. Since it moves downward, the original film is always placed on the placing roller, and is stably supported by the sandwiching member and the supporting member to feed the film.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 all show an outline of a film original fabric loading device in a packaging machine, and 1 is a main body frame of the packaging machine, and a facing space portion of a left side plate 1A and a right side plate 1B of the main body frame 1. A pair of mounting rollers 4 and 5 rotatably fitted to the fixed shafts 2 and 3 are installed in parallel to and fixed to the main body frame 1 by both ends of the fixed shafts 2 and 3.

Reference numeral 6 denotes an original film film using a plastic film made of, for example, expandable polyvinylidene chloride. The core film 6A of the original film film 6 has support members, which will be described later, at the inner and outer end portions of the core rod 6A. The film stock 6 is placed on the placement rollers 4 and 5 while being abutted against and supported by.

Reference numeral 7 denotes a screw rod in which a shaft rod formed with a left screw portion 7A and a right screw portion 7B is integrated by a connecting member 7C. A handle 8 having a manual knob 8A is attached and fixed to an end portion of the frame 1 on the left side plate 1A side,
The screw rod 7 is rotatable. 9 is a screw rod 7
Is a guide rod installed on the main body frame 1 in parallel with
A pinching member to be described later is stably supported together with the screw rod 7.

Reference numeral 10 denotes a holding member for holding the film original fabric 6 from both ends thereof, and insertion holes 11 and 12 are formed on the lower side of the holding member 10 as shown by a chain line in the drawing. An internal thread portion (not shown) is formed on the inner peripheral surface of the insertion hole 11, and an insertion member 13 that can be screwed into the screw rod 7 is inserted therein, and an insertion member for inserting the guide rod 9 is inserted in the insertion hole 12. Member 14
Has been inserted. The sandwiching member 10 in which the insertion members 13 and 14 are inserted is provided by being screwed or inserted at the position of the left screw portion 7A of the screw rod 7 and the position of the guide rod 9 corresponding thereto, and similarly, the right screw portion. 7B position and corresponding guide bar 9
A sandwiching member 10 is arranged at a position so that they are opposed to each other.

Further, on the upper side of each holding member 10, each holding member is provided.
A guide groove 15 consisting of a vertically oriented slit hole is bored along the vertical direction of 10, and a support member 16 for supporting the film original fabric 6 from both ends is movable in the vertical direction in each guide groove 15. It is arranged so that. The support member 16 is inserted into the guide groove 15 via an abutment plate 17 to support the entire support member 16, and a core rod of the film original fabric 6 rotatably fitted to the support rod 18. 6A, a rotating portion 19 that abuts on the inner peripheral surface end and the outer peripheral end of the film 6A to rotatably support the film original fabric 6. The rotating portion 19 is composed of a flange portion 20 and a blade portion 22 having a plurality of radial blades 21 extending toward the film original fabric 6 side set from the flange portion 20. At the tip of 21 is a taper portion 23 for facilitating the insertion of the blade portion 22 on the inner peripheral surface of the core rod 6A of the film raw fabric 6.
Are formed.

Numeral 24 is a support roller for keeping the tension of the film 6B sent out from the film original fabric 6 in a stable state, and both ends of the fixed shaft 25 are the placing rollers 4, 5 described above.
The support roller is installed on the body frame 1 substantially in parallel with
24 is rotatably arranged. 26 is also the support roller 24
Is a rotatable support roller which is constructed by suspending both ends of a fixed shaft 27 on the main body frame 1 below.

As described above, in this embodiment, the handle 8 is operated in accordance with the width of the various film stocks 6 to be set because of the above-described structure, and the pair of holding members are operated by the action of the left and right screw portions 7A and 7B. 10 is moved in the axial direction of the screw rod 7 to move it closer or farther to set the film raw material 6 on the rotary portion 19 of the supporting member 16 and to support the same. Of the film original fabric 6,
Whichever is set, it is possible to always align the center of the original film width with the center of the body frame width.

Further, the original film 6 is securely clamped from both ends by the clamping member 10 and the rotating portion 19 of the supporting member 16 is provided.
Is steadily abutted on the inner peripheral surface end and the outer end of the core rod 6A of the film original fabric 6 and rotatably supported, so that the film original fabric 6 moves laterally when the film 6B is fed out. Not only is it prevented from falling in the feeding direction, but also the contact portion between the rotating portion 19 and the core rod 6A is not displaced during the feeding, so that the core rod 6A of the film raw material 6 is not rubbed. There is no fear that resistance will work and the stable delivery of the film 6B will not be possible.

Further, with the decrease of the winding amount of the film original film 6 by continuously feeding the film 6B, the supporting member 16 is gradually moved downward along the guide groove 15 which is a slit hole provided in the holding member 10. Since it moves, the film raw fabric 6 is always installed on the placing rollers 4 and 5, so that stable feeding can be expected, and the weight of the film raw fabric 6 is entirely exerted on the placing rollers 4 and 5. Instead, the clamping member 10 partially works through the support member 16, so that the displacement of the change of the self-weight acting on the mounting rollers 4 and 5 due to the decrease of the winding amount of the film original fabric 6 by the feeding of the film 6B is suppressed. This makes it possible to always maintain the tension of the film 6B in a substantially constant state, so that there is no fear that the film 6B will bend when the object to be packaged is wrapped. Become

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, the structure may be such that the guide groove provided in each of the pair of holding members has a U-shaped groove shape, and the support member is detachable from the uppermost position of the holding member. Further, the number and shape of the blades in the blade portion of the rotating portion that comes into contact with the inner peripheral surface of the core rod of the film original film may be appropriately selected as long as stable support is possible. Further, from the viewpoint of reducing the weight of the entire packaging machine, the fixed shaft or the screw rod or the shaft rod of the guide rod that rotatably supports the placing roller or the supporting roller may be hollowed out.

[0018]

Industrial Applicability The present invention is a film raw material loading device for feeding a film by setting a raw material film on a supporting member and rotating the film, which is installed on the left and right side plates of the main body frame and has a handle at either one end. And a screw rod formed with a left screw portion and a right screw portion that are rotatable and a screw rod mounted on the left and right screw portions of the screw rod and moved in the axial direction of the screw rod by operating the handle. A pair of sandwiching members for freely sandwiching the film material from both ends, a guide groove provided in each of the pair of sandwiching members in a vertical direction, and an insertion arrangement provided so as to be vertically movable in each of the guide grooves. A supporting member having a rotating portion capable of abutting and supporting the inner peripheral surface end and the outer end of the film original fabric, and a mounting device for mounting the rotating film original fabric installed on the left and right side plates of the main body frame With Laura Since the stock film is provided, the raw material film is securely sandwiched from both ends by the sandwiching member, and the supporting member securely supports the raw film film rotatably. Therefore, the rotating portion of the supporting member and the core rod of the raw film material are provided. There is no displacement of the contact position with the film at the time of feeding the film, so that there is no fear that the core rod of the film raw film will have a frictional resistance and stable feeding cannot be performed.

Further, since the support member is gradually moved downward in the guide groove as the winding amount of the film original film is reduced by continuously feeding the film, the film original film is always placed on the placing roller. Since it is to be placed, stable feeding can be expected, and since the self-weight of the film raw sheet does not act on the placing roller described above, a part of it also acts on the sandwiching member via the supporting member, so that the film original produced by the film feeding It is possible to reduce the displacement of the change of the self-weight acting on the placing roller due to the decrease of the amount of the take-up, which keeps the tension of the film almost constant at all times, so that the film can be wrapped around the film when it is wrapped. There is no fear of bending. As described above, it is possible to provide the film original fabric loading device capable of stably feeding the film, and sufficiently achieve the intended purpose.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a side view showing an embodiment of the present invention.

FIG. 4 is a perspective view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Main body frame 1A Left side plate (main body frame) 1B Right side plate (main body frame) 4,5 Mounting roller 6 Film original film 6B Film 7 Screw rod 7A Left screw part 7B Right screw part 8 Handle 10 Holding member 15 Guide groove 16 Support Member 19 Rotating part

Claims (1)

[Claims] 1. A film material loading device for feeding a film by setting a film material on a support member and rotating the film, the film material loading device being installed on left and right side plates of a main body frame, and having a handle at one end thereof. A screw rod formed with a freely rotatable left screw part and a right screw part, and screwed to the left and right screw parts of the screw rod, respectively, so as to be movable in the axial direction of the screw rod by operating the handle. A pair of sandwiching members for sandwiching the raw film of the film from both ends, guide grooves vertically provided in the pair of sandwiching members, and the film arranged in each of the guide grooves so as to be vertically movable. A supporting member having a rotating portion capable of contacting and supporting the inner peripheral surface end and the outer end of the original fabric, and a placing roller for placing a rotating original film on the left and right side plates of the main body frame, Equipped with A film original fabric loading device in a packaging machine characterized by the above.