US20050241279A1 - Adjustable mechanism for thermo shrinkable film machine - Google Patents

Adjustable mechanism for thermo shrinkable film machine Download PDF

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Publication number
US20050241279A1
US20050241279A1 US10/833,984 US83398404A US2005241279A1 US 20050241279 A1 US20050241279 A1 US 20050241279A1 US 83398404 A US83398404 A US 83398404A US 2005241279 A1 US2005241279 A1 US 2005241279A1
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United States
Prior art keywords
driving wheel
sidewalls
threaded section
positioning unit
rotatable rod
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/833,984
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Tien-Sheng Hsieh
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Individual
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Individual
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Priority to US10/833,984 priority Critical patent/US20050241279A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/14—Devices for distending tubes supplied in the flattened state

Definitions

  • the present invention relates to an adjustable mechanism for micro-adjusting the wheels for transmitting the thermo shrinkable film of different thickness.
  • a conventional thermo shrinkable film machine generally includes a transmission wheel with a hole defined centrically therethrough and a shaft rotatably extends through the hole in the transmission wheel with a small gap defined between the inner periphery of the hole and the shaft.
  • Two upper pressing wheels are located around the shaft so as to provide proper pressure on the thermo shrinkable film and to move film downward along the shaft.
  • a cutting device is located beneath the transmission wheel so as to cut the film at pre-decided length.
  • a positioning device is located beneath the transmission wheel and includes two lower pressing wheels which guide the film to be mounted to containers or cans. Two flexible plates are used to stop lower edge of the film which is not yet sent to mount on the containers or cans.
  • a common problem is that the thickness of the film may vary due to the different manufacturers and the upper pressing and lower pressing wheels have to be adjusted accordingly by manual efforts and this spends a lot of time.
  • the present invention intends to provide an adjustable mechanism for micro adjusting the pressing wheels for the shrinkable film of different thickness.
  • the present invention relates to a thermo shrinkable film machine which comprises a base with two sidewalls and two rails are connected between the two sidewalls.
  • a rotatable rod is rotatably connected between the two sidewalls and located between the two rails.
  • the rotatable rod includes a right-handed threaded section and a left-handed threaded section.
  • Two blocks are movably mounted to the two rails and have two respective threaded passages so as to be engaged with the right-handed threaded section and the left-handed threaded section respectively.
  • Two wheels are respectively connected to the two blocks so as to contact thermo shrinkable film mounted on a shaft.
  • a positioning unit received in one of the two sidewalls and a driving wheel which is connected to an end of the rotatable rod. The driving wheel is positioned by the positioning unit.
  • FIG. 1 is an exploded view to show the thermo shrinkable film machine and the adjustable mechanism of the present invention
  • FIG. 2 is a perspective view to show the thermo shrinkable film machine and the adjustable mechanism of the present invention
  • FIG. 3 is a cross sectional view to show that the bead is engaged with one of the notches in the driving wheel;
  • FIG. 4 shows when rotating the driving wheel, the bead is removed from the notch of the driving wheel
  • FIG. 5 shows the bead is engaged with another notch of the driving wheel so as to adopt the wheels on the two blocks to the thicker film;
  • FIG. 6 is another embodiment of the adjustable mechanism of the present invention.
  • FIG. 7 is yet another embodiment of the adjustable mechanism of the present invention.
  • the thermo shrinkable film machine 2 of the present invention comprises a base with two sidewalls 21 , 22 on the base 20 and a transmission wheel 60 for driving a shaft 6 is rotatably engaged with a recess in a side of the base 20 .
  • Two rails 23 , 24 are connected between the two sidewalls 21 , 22 and a rotatable rod 3 is rotatably connected between the two sidewalls 21 , 22 and located between the two rails 23 , 24 .
  • the rotatable rod 3 includes a right-handed threaded section 31 and a left-handed threaded section 32 .
  • Two blocks 26 , 27 are movably mounted to the two rails 23 , 24 and have two respective threaded passages.
  • the right-handed threaded section 31 and the left-handed threaded section 32 are respectively threadedly engaged with the two respective threaded passages such that when rotating the rotatable rod 3 , the two blocks 26 , 27 are moved in two opposite directions along the two rails 23 , 24 .
  • Two wheels 260 , 270 are respectively connected to the two blocks 26 , 27 so as to contact the thermo shrinkable film 7 mounted on the shaft 6 .
  • An adjustable mechanism includes a positioning unit 5 received in a hole 210 in the sidewall 21 and a driving wheel 4 has a rectangular hole through which a rectangular section on an end of the rotatable rod 3 extends.
  • the driving wheel 4 has a plurality of notches 40 defined in a side thereof.
  • the positioning unit 5 includes a bead 50 and a spring 51 which biases the bead 50 .
  • the bead 50 and the spring 51 are received in a sleeve 52 which has a smaller opening in one end of the sleeve 52 so as to prevent the bead 50 from dropping from the sleeve 52 .
  • the bead 50 is engaged with one of the notches 40 of the driving wheel 4 .
  • the user may rotating the driving wheel 4 to move the two blocks 26 , 27 away from each other, and the rotation can be stopped when the bead 50 is engaged with another notch 40 .
  • the small gap of adjustment between the wheels 260 , 270 and the film 7 allows the wheels 260 , 270 to contact the thicker film 7 properly.
  • FIG. 6 shows another embodiment of the present invention wherein the driving wheel 4 includes an insertion which is rotatably extends through the sidewall 21 , and a plurality of notches 40 are defined in an outer periphery of the insertion.
  • the positioning unit 5 is received in a hole 210 defined in a top of the sidewall 21 so that a bead 50 is engaged with one of the notches 40 of the insertion of the driving wheel 4 .
  • FIG. 7 shows yet another embodiment wherein the driving wheel 4 is connected to an end of the rotatable rod 3 and a plurality of protrusions 400 extending from a first side of the driving wheel 4 .
  • a hole 210 is defined in the sidewall 21 and receives one of the protrusions 400 .
  • the adjustable mechanism includes a positioning unit 5 which includes a spring 51 and a cap 52 which is fixed to the end of the rotatable rod 3 .
  • the spring 51 is biased between the driving wheel 4 and the cap 52 so as to provide a force to the driving wheel 4 toward the sidewall 21 .
  • a recess 41 is defined in the second side of the driving wheel 4 so as to accommodate the positioning unit 5 therein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

A thermo shrinkable film machine includes two blocks movably mounted on two rails between two sideswalls on the base of the machine. A rotatable rod is rotatably connected between the two sidewalls includes a right-handed threaded section and a left-handed threaded section. The two blocks has two respective threaded passages which are respectively connected to the right-handed threaded section and the left-handed threaded section so that when rotating the rotatable rod, the two blocks are moved in opposite directions. Two wheels are respectively connected to the two blocks so as to contact thermo shrinkable film mounted on a shaft. An adjustable mechanism includes a driving wheel connected to an end of the rotatable rod and can be positioned by a positioning unit received in one of the two sidewalls.

Description

    FIELD OF THE INVENTION
  • The present invention relates to an adjustable mechanism for micro-adjusting the wheels for transmitting the thermo shrinkable film of different thickness.
    • BACKGROUND OF THE INVENTION
  • A conventional thermo shrinkable film machine generally includes a transmission wheel with a hole defined centrically therethrough and a shaft rotatably extends through the hole in the transmission wheel with a small gap defined between the inner periphery of the hole and the shaft. Two upper pressing wheels are located around the shaft so as to provide proper pressure on the thermo shrinkable film and to move film downward along the shaft. A cutting device is located beneath the transmission wheel so as to cut the film at pre-decided length. A positioning device is located beneath the transmission wheel and includes two lower pressing wheels which guide the film to be mounted to containers or cans. Two flexible plates are used to stop lower edge of the film which is not yet sent to mount on the containers or cans. A common problem is that the thickness of the film may vary due to the different manufacturers and the upper pressing and lower pressing wheels have to be adjusted accordingly by manual efforts and this spends a lot of time.
  • The present invention intends to provide an adjustable mechanism for micro adjusting the pressing wheels for the shrinkable film of different thickness.
    • SUMMARY OF THE INVENTION
  • The present invention relates to a thermo shrinkable film machine which comprises a base with two sidewalls and two rails are connected between the two sidewalls. A rotatable rod is rotatably connected between the two sidewalls and located between the two rails. The rotatable rod includes a right-handed threaded section and a left-handed threaded section. Two blocks are movably mounted to the two rails and have two respective threaded passages so as to be engaged with the right-handed threaded section and the left-handed threaded section respectively. Two wheels are respectively connected to the two blocks so as to contact thermo shrinkable film mounted on a shaft. A positioning unit received in one of the two sidewalls and a driving wheel which is connected to an end of the rotatable rod. The driving wheel is positioned by the positioning unit.
  • The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an exploded view to show the thermo shrinkable film machine and the adjustable mechanism of the present invention;
  • FIG. 2 is a perspective view to show the thermo shrinkable film machine and the adjustable mechanism of the present invention;
  • FIG. 3 is a cross sectional view to show that the bead is engaged with one of the notches in the driving wheel;
  • FIG. 4 shows when rotating the driving wheel, the bead is removed from the notch of the driving wheel;
  • FIG. 5 shows the bead is engaged with another notch of the driving wheel so as to adopt the wheels on the two blocks to the thicker film;
  • FIG. 6 is another embodiment of the adjustable mechanism of the present invention, and
  • FIG. 7 is yet another embodiment of the adjustable mechanism of the present invention.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIGS. 1 to 3, the thermo shrinkable film machine 2 of the present invention comprises a base with two sidewalls 21, 22 on the base 20 and a transmission wheel 60 for driving a shaft 6 is rotatably engaged with a recess in a side of the base 20. Two rails 23, 24 are connected between the two sidewalls 21, 22 and a rotatable rod 3 is rotatably connected between the two sidewalls 21, 22 and located between the two rails 23, 24. The rotatable rod 3 includes a right-handed threaded section 31 and a left-handed threaded section 32. Two blocks 26, 27 are movably mounted to the two rails 23, 24 and have two respective threaded passages. The right-handed threaded section 31 and the left-handed threaded section 32 are respectively threadedly engaged with the two respective threaded passages such that when rotating the rotatable rod 3, the two blocks 26, 27 are moved in two opposite directions along the two rails 23, 24. Two wheels 260, 270 are respectively connected to the two blocks 26, 27 so as to contact the thermo shrinkable film 7 mounted on the shaft 6.
  • An adjustable mechanism includes a positioning unit 5 received in a hole 210 in the sidewall 21 and a driving wheel 4 has a rectangular hole through which a rectangular section on an end of the rotatable rod 3 extends. The driving wheel 4 has a plurality of notches 40 defined in a side thereof. The positioning unit 5 includes a bead 50 and a spring 51 which biases the bead 50. The bead 50 and the spring 51 are received in a sleeve 52 which has a smaller opening in one end of the sleeve 52 so as to prevent the bead 50 from dropping from the sleeve 52. The bead 50 is engaged with one of the notches 40 of the driving wheel 4.
  • Referring to FIGS. 4 and 5, when the film 7 to be used is thicker than the previous one, the user may rotating the driving wheel 4 to move the two blocks 26, 27 away from each other, and the rotation can be stopped when the bead 50 is engaged with another notch 40. The small gap of adjustment between the wheels 260, 270 and the film 7 allows the wheels 260, 270 to contact the thicker film 7 properly.
  • Referring to FIG. 6 which shows another embodiment of the present invention wherein the driving wheel 4 includes an insertion which is rotatably extends through the sidewall 21, and a plurality of notches 40 are defined in an outer periphery of the insertion. The positioning unit 5 is received in a hole 210 defined in a top of the sidewall 21 so that a bead 50 is engaged with one of the notches 40 of the insertion of the driving wheel 4.
  • FIG. 7 shows yet another embodiment wherein the driving wheel 4 is connected to an end of the rotatable rod 3 and a plurality of protrusions 400 extending from a first side of the driving wheel 4. A hole 210 is defined in the sidewall 21 and receives one of the protrusions 400. The adjustable mechanism includes a positioning unit 5 which includes a spring 51 and a cap 52 which is fixed to the end of the rotatable rod 3. The spring 51 is biased between the driving wheel 4 and the cap 52 so as to provide a force to the driving wheel 4 toward the sidewall 21. A recess 41 is defined in the second side of the driving wheel 4 so as to accommodate the positioning unit 5 therein.
  • While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (5)

1. A thermo shrinkable film machine comprising:
a base with two sidewalls on the base, two rails connected between the two sidewalls and a rotatable rod rotatably connected between the two sidewalls, the rotatable rod including a right-handed threaded section and a left-handed threaded section, two blocks movably mounted to the two rails and having two respective threaded passages, the right-handed threaded section and the left-handed threaded section respectively threadedly engaged with the two respective threaded passages, two wheels respectively connected to the two blocks and adapted to contact thermo shrinkable film mounted on a shaft, and
an adjustable mechanism including a positioning unit received in one of the two sidewalls and a driving wheel which is connected to an end of the rotatable rod, the driving wheel being positioned by the positioning unit.
2. The machine as claimed in claim 1, wherein the driving wheel has a plurality of notches defined in a side thereof and the positioning unit is received in a hole in one of the two sidewalls, the positioning unit including a bead and a spring which biases the bead which is engaged with one of the notches of the driving wheel.
3. The machine as claimed in claim 1, wherein the driving wheel 4 includes an insertion which is rotatably extends through one of the sidewalls, a plurality of notches defined in an outer periphery of the insertion, the positioning unit received in a hole in one of the two sidewalls and including a bead and a spring which biases the bead which is engaged with one of the notches of the insertion of the driving wheel.
4. A thermo shrinkable film machine comprising:
a base with two sidewalls on the base, two rails connected between the two sidewalls and a rotatable rod rotatably connected between the two sidewalls, the rotatable rod including a right-handed threaded section and a left-handed threaded section, two blocks movably mounted to the two rails and having two respective threaded passages, the right-handed threaded section and the left-handed threaded section respectively threadedly engaged with the two respective threaded passages, two wheels respectively connected to the two blocks and adapted to contact thermo shrinkable film mounted on a shaft, and
a driving wheel mounted to an end of the rotatable rod and an adjustable mechanism including a positioning unit connected to a first side of the driving wheel, a plurality of protrusions extending from a second side of the driving wheel, a hole defined in one of the two sidewalls and receiving one of the protrusions, the positioning unit including a spring and a cap which is fixed to the end of the rotatable rod, the spring being biased between the driving wheel and the cap.
5. The machine as claimed in claim 4, wherein the driving wheel has a recess defined in the first side of the driving wheel and the positioning unit is received in the recess.
US10/833,984 2004-04-28 2004-04-28 Adjustable mechanism for thermo shrinkable film machine Abandoned US20050241279A1 (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060196149A1 (en) * 2005-03-07 2006-09-07 Liao Benker P C Adjusting device of film packaging machine
US20070234686A1 (en) * 2004-06-28 2007-10-11 Tien-Sheng Hsieh Guidance device for thermo shrinkable film machine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242635A (en) * 1962-06-01 1966-03-29 David G Kobick Packaging machine
US4806187A (en) * 1986-06-18 1989-02-21 Fujiyama Giken Co., Ltd. Method and apparatus for successively applying thermoshrinkable tubular labels to containers
US5402620A (en) * 1991-07-05 1995-04-04 O.M.G. Di Giorgio Pessina E Aldo Perobelli S.N.C. Device and method for closing and laterally sealing plastic film wrapped bundles containing sheets or the like
US5531858A (en) * 1995-01-20 1996-07-02 Hong; Chin-Tan Shrinkable label inserting machine
US5791220A (en) * 1996-08-28 1998-08-11 Benison & Co., Ltd. Cutting device of packing apparatus
US5862715A (en) * 1995-12-18 1999-01-26 Electronic Hardware Corp. Tactile detent knob
US6070399A (en) * 1998-07-21 2000-06-06 Huang; Fu-Chuan Guide feeding device for a thermal shrinking film mechanism
US6161444A (en) * 1999-05-28 2000-12-19 Raytheon Company Precision linear adjustment mechanism
US6220114B1 (en) * 1999-03-29 2001-04-24 Delphi Technologies, Inc. Control knob positioning device having tactile feedback
US6508144B1 (en) * 1999-08-11 2003-01-21 The United States Of America As Represented By The Secretary Of The Navy Quick zeroing knob assembly
US20050241280A1 (en) * 2004-04-28 2005-11-03 Tien-Sheng Hsieh Synchronously adjusting device for thermo shrinkable film machine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242635A (en) * 1962-06-01 1966-03-29 David G Kobick Packaging machine
US4806187A (en) * 1986-06-18 1989-02-21 Fujiyama Giken Co., Ltd. Method and apparatus for successively applying thermoshrinkable tubular labels to containers
US5402620A (en) * 1991-07-05 1995-04-04 O.M.G. Di Giorgio Pessina E Aldo Perobelli S.N.C. Device and method for closing and laterally sealing plastic film wrapped bundles containing sheets or the like
US5531858A (en) * 1995-01-20 1996-07-02 Hong; Chin-Tan Shrinkable label inserting machine
US5862715A (en) * 1995-12-18 1999-01-26 Electronic Hardware Corp. Tactile detent knob
US5791220A (en) * 1996-08-28 1998-08-11 Benison & Co., Ltd. Cutting device of packing apparatus
US6070399A (en) * 1998-07-21 2000-06-06 Huang; Fu-Chuan Guide feeding device for a thermal shrinking film mechanism
US6220114B1 (en) * 1999-03-29 2001-04-24 Delphi Technologies, Inc. Control knob positioning device having tactile feedback
US6161444A (en) * 1999-05-28 2000-12-19 Raytheon Company Precision linear adjustment mechanism
US6508144B1 (en) * 1999-08-11 2003-01-21 The United States Of America As Represented By The Secretary Of The Navy Quick zeroing knob assembly
US20050241280A1 (en) * 2004-04-28 2005-11-03 Tien-Sheng Hsieh Synchronously adjusting device for thermo shrinkable film machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070234686A1 (en) * 2004-06-28 2007-10-11 Tien-Sheng Hsieh Guidance device for thermo shrinkable film machine
US20060196149A1 (en) * 2005-03-07 2006-09-07 Liao Benker P C Adjusting device of film packaging machine
US7231748B2 (en) * 2005-03-07 2007-06-19 Benison & Co., Ltd. Adjusting device of film packaging machine

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