JPH018495Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a method for determining film length in a manual packaging device that manually pulls out a film of a predetermined length from a film roll placed on a mounting roller. Related to size supply device.

(Prior Art) Conventionally, in this type of manual packaging device, the end of the film pulled out from the film lead-out portion of the device body is passed around the bottom of the article using the work panel on the upper surface of the device body, and then the film is pulled out to wrap the article. After winding, the film is cut, etc.

(Problem to be solved by the invention) However, in the past, the amount of film to be pulled out was determined by the operator's visual judgment, so the position of the film end at the bottom of the article varied, and the film for the same article The amount may be in excess or in shortage, resulting in wasted costs in the former case, and unreliable packaging in the latter case.

Therefore, the purpose of the present invention is to be able to supply a certain length of film and to make the amount of film used for each article appropriate, thereby preventing wasted costs due to excessive use of film and packaging uncertainty due to insufficient amount of film used. An object of the present invention is to provide a film sizing feeding device for a manual packaging device.

[Structure of the device] (Means for solving the problem) The present invention is for wrapping an article by manually pulling out a film from a pull-out position, and in which a film roll around which the film is wound is placed. A loading roller is provided which rotates according to the length of the pulled-out film when the film is pulled out at the pulling-out position, and the loading roller is connected to the loading roller via a power transmission mechanism and responds to the rotation of the loading roller. a length-measuring member that is moved by the pull-out position, and when the film from the film roll is pulled out for a predetermined length at the pull-out position, the length-measuring member is moved by coming into contact with the length-measuring member that is moved in response to the pull-out. A stopper is provided which restricts the rotation of the placing roller and stops the film from being pulled out by blocking the rotation of the placing roller, and when the stopper is operated to swing in conjunction with the manual wrapping operation of the article to be packaged, the power transmission mechanism stops. The present invention is characterized in that a return device is provided for releasing the transmission state and returning the length measuring member to its original position.

(Function) According to the above-mentioned means, when the length of the film pulled out from the pull-out position reaches a predetermined length, the rotation of the placement roller is regulated and the pull-out of the film is restrained. The amount of film used is always constant and controlled to an appropriate state with no excess or deficiency, thereby preventing wasted costs due to excessive amount of film used and packaging uncertainty due to insufficient amount of film used.

(Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. 1 to 6. Reference numeral 1 denotes a frame-shaped main body, and a pair of front and rear mounting rollers 2 and 3 are rotatably disposed at the rear thereof. A film roll 5 made of a film 4 wound around a winding frame 5a is placed on the placing rollers 2 and 3. Reference numeral 6 denotes a lid plate which also serves as a work plate and is disposed on the upper surface of the approximately middle part of the main body 1. A base plate 7 for packaging work is disposed on the upper surface of this plate so as to be movable back and forth. There is a protrusion 8 made of a metal plate for guiding the film 4.
is provided. Reference numeral 9 denotes a base plate for welding work disposed at the front of the main body 1. An adhesive hot plate 10 is disposed on the upper surface of the base plate 9, and a panel plate portion 11 is disposed on the rear edge of the base plate 9. is formed. 12 is a holder made of a non-slip metal plate for the film 4;
This is located between the protrusion 8 and the base plate 9 in the main body 1, and is pivotally supported on the main body 1 via a shaft 12a so as to be rotatable in the direction of arrow A and the direction opposite to arrow A.
A front holding part 13 and a rear holding part 14 each having a flat upper surface extend from the front and rear parts of the holding body 12. Also, the rear holding part 14 of this holding body 12
A film guide 15 that is slippery with respect to the film 4 is attached to the rear surface. 16 is the holding body 1
2 and the main body 1, the holder 12 is always biased to rotate in the direction of the arrow A. Reference numeral 17 denotes a heat cutter located inside the front holding part 13 and fixed to the main body 1, and an opening 13 facing the heat cutter 17 is provided on the upper surface of the front holding part 13.
A is provided. 18, 18 are roller levers whose intermediate parts are pivotally mounted on the left and right side plates of the main body 1,
A pressure roller 19 is rotatably bridged at one end thereof, and a spring 20 is adjusted at the other end so as to always urge the pressure roller 19 to rotate in the direction of arrow B (upward). Reference numeral 21 denotes a guide roller arranged close to the film guide 17. In FIGS. 2 and 4, reference numeral 22 denotes a plate-shaped arm, and a fitting hole 23 formed at one end is pivotally fitted into the end of the shaft 3a of the mounting roller 3, and the other end Pin 24 on the part
has been established. Reference numeral 25 denotes a first gear fixed to the end of the shaft 3a of the mounting roller 3, located outside the arm 22. A second gear 26 is rotatably fitted onto the pin 24 and meshes with the first gear 25 . A guide member 27 is located near the second gear 26 and attached to the inner surface of the main body 1, and has a sliding hole 27a having a substantially rectangular cross section in a substantially horizontal direction. Reference numeral 28 denotes a moving member which is a length measuring member in the shape of a substantially rectangular bar that is fitted into the sliding hole 27a of the guide member 27 and can be slid substantially horizontally in the direction of arrow C and in the direction opposite to arrow C;
A rack 29 that meshes with the second gear 26 is provided on the upper surface.
is formed. And arm 22, pin 24,
First gear 25, second gear 26 and rack 29
The power transmission mechanism 30 is configured by the above. This power transmission mechanism 30 is connected to the second gear 26 when the arm 22 is urged downward as shown by the solid line in FIG.
The second gear 26 engages with the rack 29 when it is swung upward as shown by the two-dot chain line.
When the transmission state is released, the transmission state is released. Reference numeral 31 denotes a stopper attached to the end of the movable member 28, and its outer peripheral portion protrudes from the outer peripheral edge of the movable member 28. 32 is an adjustment plate attached to the inner side of the main body 1 via a mounting plate 33, which is indicated by arrow C.
It is slidable in the direction opposite to arrow C, and is fixed at a desired position by screwing the fixing screw 34 screwed into the mounting plate 33 back and forth. Reference numeral 35 denotes a stopper piece formed by bending the end of the adjustment plate 32 at a substantially right angle toward the inside of the main body 1, and this stopper piece faces the stopper 31 of the moving member 28. Then, the movable member 28 moves leftward from the original position X where the stopper 31 abuts against the blocking piece 35.
It is possible to move by a distance l to the operating position Y where it comes into contact with the end 27b of the actuator and is prevented from moving, and this moving distance l can be expanded to the distance L shown in FIG. can. 36 is a roller rotatably attached to the inner wall of the main body 1; 37;
The locking pin 38 is also attached to the main body 1, the return spring 38 has one end hooked to the locking pin 37, and the other end of the wire 39 has one end attached to the other end of the return spring 38. is attached to the stopper 31 via a roller 36, and the movable member 28
is always urged in the opposite direction of arrow C by the resilient force of the return spring 38, and is placed at the original position X where the stopper 31 and the blocking piece 35 are in contact with each other. Reference numeral 40 indicates a pin provided upright on the inner wall of the main body 1, and reference numeral 41 indicates a lever swingably supported by the pin 40. The pin 24 of the arm 22 is inserted into a U-shaped opening 41a formed at one end.
is inserted. The width of this opening 41a is larger than the outer diameter of the pin 24, and the inner side 41b of the opening 41a
There is a gap between the pin 24 and the outer periphery of the pin 24. 42 is a first connector connected to the other end of the arm 22;
The connecting rod 43 is the third one from the shaft 12a of the holder 12.
With the second connecting rod attached near the right end as shown in the figure,
These first and second connecting rods 42, 43 are connected to each other so that their lengths can be adjusted. 44 is a holder located above the lever 41 and attached to the inner wall of the main body 1; 45 is a circular sliding hole formed horizontally in the holder 44; A stopper 46 is slidably inserted. 4
Reference numeral 7 denotes a guide plate attached to the stopper 46, which has an inclined surface portion 47a formed at its lower end. 48 is a diagonal driving body that comes into contact with the lever 41. The stopper 46 is biased in the direction of arrow C by a spring 49, and its tip presses the upper end surface of the arm 22 to prevent the arm 22 from moving upward.
A gear 26 is meshed with a rack 29. Thus, when the holding body 12 is rotated in the opposite direction of arrow A,
Along with this, the first and second connecting rods 42 and 43 are pushed down, the lever 41 is rotated in the direction of arrow D, and its opening 41a is displaced upward, but at the same time As the driving body 48 is raised, the guide plate 47 is moved in the opposite direction of arrow C against the elastic force of the spring 49, and the tip of the stopper 46 is released from the arm 22, so that the arm 22 is moved away from the lever 41. The lever 41 becomes slidable in accordance with the rotation, and as the holding body 12 rotates in the direction opposite to the arrow A, the lever 41 rotates in the direction of the arrow D, and the second gear 26
The engagement between the rack 29 and the rack 29 can be released. Then, the return spring 38, the wire 39,
The roller 36, lever 41, first and second connecting rods 42 and 43, stopper 46, holder 44, spring 49, and driver 48 constitute a return device 50.

Next, the operation of the above configuration will be explained. As shown in FIG. 2, the film 4 from the film roll 5 is hung on a guide roller 21 and drawn upward along the film guide 15.
The drawer end portions of the drawer are held in close contact with the rear holding portion 14 and the front holding portion 13 so as to be bridge-held. When the pull-out end of the film 4 is pulled out from this state, the film roll 5 rotates in the direction of arrow R, and in response to this rotation, the mounting roller 3 rotates in the opposite direction of arrow R, and its shaft 3a
The first gear 25 at the end also rotates in the same direction. This rotation of the first gear 25 causes the second gear 26 to rotate in the direction of arrow R, and the moving member 28 having the rack 29 moves in the direction of arrow C. and film 4
When the movable member 28 is pulled out by a predetermined length l, the stopper 31 at the end of the movable member 28 reaches the operating position Y where it abuts the end 27b of the guide member 27, and the movement of the movable member 28 is blocked, thereby causing the second and first gears to move. 26 and 25 stop, the loading roller 3 also stops, and as a result, further withdrawal of the film 4 is stopped, and thus,
The supply length of the film 4 becomes constant. Next, when the film 4 is rotated in the opposite direction of arrow A along the holder 12 in order to cut the pulled-out film 4, the thermal cutter 17 is cut into the opening 1 by the rotation of the holder 12.
3a to cut the film 4. Further, as the holding body 12 is rotated in the opposite direction of the arrow A, the lever 41 is swung in the direction of the arrow D around the pin 40, and the driving body 48 slides on the inclined surface portion 47a of the guide plate 47 as described above. Then, the stopper rod 46 is moved in the opposite direction of arrow C, and its tip is released from the arm 22. Subsequently, the opening 4 of the lever 41
Since the inner part 41b of 1a pushes the pin 24 upward, the arm 22 rotates in the direction opposite to the arrow R and releases the second gear 26 from the rack 29, thereby causing the movable body 28 to release the return spring 38. The force moves it in the opposite direction of arrow C and returns to the original position X, returning to the initial state. Due to the above action, the film 44
is pulled out a certain length each time.

Next, FIGS. 5 a to d show the operation when wrapping the article A while pulling out the film 4 in this way.
This will be explained with reference to FIG. That is, when wrapping article A in FIG.
Set. Next, (a) place the tray B containing the article A on the base plate 7, and from this state, hold the pulled-out end of the film 4 and move it slightly upward and toward you as shown in Fig. 5a. l Pull out ₁ . Then, the film roll 5 rotates, and the rack 29 is passed through the first and second gears 25 and 26 of the mounting roller 3 in the same manner as described above.
Then, the moving member 28 moves by a length l ₁ in the direction of arrow C (see FIG. 3).

(b) In this stopped state, wrap the film 4 as shown in FIG. Make contact at

(c) Next, as shown in FIG. 5c, tray B is moved in the direction of arrow F and the film 4 is pulled out by a secondary drawing amount l ₂ . As in section (a), the rotation of the film roll 5 causes the movable member 28 to move in the direction of arrow C, and stops at the operating position Y where the stopper 31 abuts the end 27b of the guide member 27, and the film 4 Primary withdrawal amount l ₁ +secondary withdrawal amount l ₂ )=total length l pulled out.

(d) Then, when the film 4 is wrapped around the lower surface of the tray B and the pressure roller 19 is pressed by the wrapped portion as shown in FIG. Film 4 is cut. On the other hand, the holding body 12 is rotated in the opposite direction of arrow B, the lever 41 is rotated, and the moving member 28 is returned to the original position X as described above.

(e) After that, as shown in FIG. 6, turn both ears 4a and 4b of the film 4 in the direction of arrow C (toward the bottom of the tray B), and place the film 4 on the bottom of the tray B onto the adhesive hot plate 10. to weld.

By repeating the operations (a) to (d) above, trays B containing articles A can be wrapped one after another.

According to the above embodiment, the film 4 having a predetermined length l
When the film 4 is pulled out, the stopper 31 prevents the moving member 28 from moving, thereby restricting the film 4 from being pulled out, so that the film 4 of the required length can be supplied.

The length l of the film 4 to be pulled out can be adjusted by changing the position of the adjustment plate 32, and the required length l of the film 4 is so small that the stopper 31 does not come into contact with the end of the guide member 27. Even in this state, the film 4 can be cut by the thermal cutter 17 by rotating the holder 12 in the opposite direction of arrow B. When packaging, it is possible to perform packaging without any trouble without readjusting the adjustment plate 32.

FIG. 7 shows a second embodiment of the present invention.
The same parts as in the first embodiment are given the same reference numerals, and only different parts will be explained. A large gear 51 is rotatably fitted to a shaft 52 erected on the inner wall of the main body 1 and is meshed with the second gear 26 . Reference numeral 53 denotes a backing plate that is attached to the side surface of the large gear 51 and projects outward, and 54 is a stopper that is attached to the main body 1 and comes into contact with the backing plate 53. 55
is an adjustment plate disposed along the outer periphery of the large gear 51, which is provided with an arc-shaped long groove 55a, and a blocking piece 56 whose position can be changed along the long groove 55a.
protrudes inward and is fixed. 57 is the shaft 52
A return spring whose one end is hooked to the large gear 51 and whose other end is hooked to the large gear 51 normally urges the large gear 51 in the opposite direction of arrow H to cause the backing plate 53 to come into contact with the blocking piece 56. It is held at position X. When the film 4 is pulled out, the mounting roller 3, the first and second
The large gear 51 moves in the direction of the arrow H through the gears 25 and 26.
When the film 4 is rotated in the direction shown in FIG. After stopping, the arm 2 is rotated by rotating the holder 12 as in the previous embodiment.
2 is rotated in the direction of arrow D, the meshing between the second gear 26 and the large gear 51 is released, and the large gear 51
is returned to the original position X by the urging force of the return spring 57.

FIG. 8 shows a third embodiment of the present invention.
58 is a drive pulley formed on the side surface of the large gear 51; 59 is a driven pulley rotatably supported on a shaft 60 provided upright on the main body 1; 61 is an adjustable pulley between the drive pulley 58 and the driven pulley 59. The belt 62 is a backing plate attached to the belt 61 as a length measuring member. Reference numeral 63 denotes a tension spring adjusted between the belt 61 and the main body 1, which normally biases the belt 61 in the direction of arrow K to keep the backing plate 62 in contact with the stopper 31. Then film 4
When the film 4 is pulled out, the belt 61 moves in the opposite direction of the arrow K via the first gear 25, the second gear 26, the large gear 51, and the drive pulley 58, and when the film 4 is pulled out a predetermined length l, the belt 61 moves in the opposite direction of arrow K. The plate 62 is the stopper 5
4 and the drawing of the film 4 is stopped. After stopping, the holding body 1 is
2, the arm 22 is rotated in the direction of arrow D, thereby disengaging the second gear 26 and the large gear 51, and the belt 61 is returned to its original position X by the biasing force of the tension spring 63. The second and third embodiments described above also provide the same effects as the first embodiment.

In each of the embodiments described above, the length measuring member is returned to its original position by disengaging the gears from each other. The length measuring member may be returned to its original position by interposing a clutch between the two and releasing the clutch.

[Effects of the invention] As is clear from the above description, the present invention is an apparatus for packaging articles by manually pulling out a film from a pull-out position, in which a film roll around which the film is wound is placed. When the film is pulled out at the pull-out position, a loading roller rotates according to the length of the pulled-out film, and is connected to this loading roller via a power transmission mechanism to rotate the loading roller. A length measuring member is provided which is moved in accordance with the drawing, and when the film from the film roll is pulled out for a predetermined length at the drawing position, the length measuring member comes into contact with the length measuring member which is moved in accordance with the drawing. A stopper is provided which restricts the rotation of the placing roller and stops the film from being pulled out by preventing the movement of the placing roller, and when the stopper is operated to swing in conjunction with the manual wrapping operation of the article to be packaged, the power transmission occurs. Since the device is characterized by being provided with a return device that releases the transmission state of the mechanism and returns the length measuring member to its original position, when the length of the film pulled out from the pull-out position reaches a predetermined length, the length of the film is removed. Since the drawer is restricted, the amount of film used for wrapping the packaged items is always kept constant and controlled to an appropriate state with no excess or deficiency, thereby preventing wasted costs due to excessive use of film or packaging due to insufficient amount of film used. This has the excellent effect of preventing uncertainty.

[Brief explanation of the drawing]

1 to 6 show a first embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is an enlarged longitudinal sectional side view, and FIG. 3 is an enlarged side view of main parts. Figure 4 is a sectional view taken along the line - in Figure 3, Figures 5 a to d.
6 is a perspective view of the article in the middle of packaging, and FIG. 7 is a view corresponding to FIG. 3 showing the second embodiment of the present invention. , FIG. 8 is a diagram corresponding to FIG. 3 showing a third embodiment of the present invention. In the drawing, 3 is a loading roller, 4 is a film, 5 is a film roll, 25 is a first gear, and 26 is a second gear.
, 28 is a moving member (length measuring member), 29 is a rack, 30 is a power transmission mechanism, 31 and 54 are stoppers, 50 is a return device, 51 is a large gear (length measuring member),
61 indicates a belt (length measuring member).

Claims (1)

[Scope of utility model registration request] In a device that manually pulls out a film from a pull-out position to wrap an article, when a film roll with the film wound thereon is placed and the film is pulled out at the pull-out position, the length of the pulled-out film changes. a mounting roller that rotates in accordance with the rotation of the film roll; a length measuring member that is connected to the mounting roller via a power transmission mechanism and is moved in accordance with the rotation of the mounting roller; When the film is pulled out for a predetermined length, the film is pulled out by abutting against the length measuring member that is moved in accordance with the pulling out and preventing the movement of the length measuring member, thereby regulating the rotation of the placing roller and pulling out the film. a stopper for stopping the length measuring member; and a return device for releasing the transmission state of the power transmission mechanism and returning the length measuring member to its original position when the object is swung in conjunction with the manual wrapping operation of the article to be packaged. A film sizing feeding device in a manual packaging device comprising: