KR101469950B1 - Film shrinking machine having smooth up and down movement of heating frame for packaging refrigerator using heat shrink film - Google Patents

Abstract

The present invention relates to a film shrinking device for a heat shrink film packaging device of a refrigerator, of which a heating frame can easily move up and down. More specifically, the film shrinking device keeps the balance of the heating frame and moves the heating frame easily with even small force through the combination of a driving motor, a weight balance, and a sprocket wheel, which is a linking device. The film shrinking device includes: a film supplier providing heat shrink film which is shrunk by heat; a film wrapping device covering a refrigerator with the heat shrink film supplied from the film supplier; a film shrinking device applying heat to the heat shrink film to allow the heat shrink film covering the refrigerator to be shrunk and completely attached on the refrigerator; and a refrigerator transporting means transporting the refrigerator to the determined work positions of the film wrapping device and the film shrinking device.

Description

TECHNICAL FIELD [0001] The present invention relates to a film shrinking apparatus for a refrigerator heat shrinkable film packaging apparatus,

The present invention relates to a film shrinker for a refrigerator heat shrinkable film packaging apparatus in which a heating frame is smoothly moved up and down. More specifically, the present invention relates to a film shrinker for a refrigerator heat shrinkable film packaging apparatus for balancing a heating frame by a combination of a driving motor, The film shrinking device for a refrigerator heat shrinkable film packaging apparatus according to the present invention can smoothly ascend and descend a heating frame while maintaining the temperature of the heating frame.

Refrigerators are typically packaged in paper-based boxes that protect the product when it is shipped for sale.

However, in the case of paper box made of paper, the use of wood, which is a raw material of paper, raises the risk of natural damage, and the cost is relatively high, resulting in an increase in cost, difficulty in handling due to the volume of packaging after completion of distribution, , The cost of recycling processing after collection is increased, and there is a difficulty in managing inventory by size due to marketing of a small quantity of products by the manufacturer.

In order to overcome the disadvantages of the box packaging of paper materials as described above, Korean Patent Laid-Open Publication No. 10-2000-0069218 (published on November 25, 2000) discloses a "machine for wrapping a product with heat- There is a bar.

However, the above-mentioned prior art has a problem in that it is difficult to apply to a large-sized product such as a refrigerator which is bulky and heavy in weight and which has a limited freedom of movement during packaging.

On the other hand, Korean Patent Laid-Open No. 10-2012-0050630 (date of publication: 2012.05.21) has proposed a "heat-shrinkable film packaging apparatus"

However, the above-mentioned other conventional technique has a problem that a lot of power is required to overcome the weight of the heating block and the frame by raising and lowering the frame provided with the heating block using only the elevating motor and the chain.

It is an object of the present invention to balance a heating frame with a relatively small force by a combination of a driving motor, a weight balance, an interlocking chain and a sprocket wheel, Shrinking film for a refrigerator heat shrinkable film packaging apparatus which can smoothly ascend and descend a heating frame up and down.

In order to achieve the above object, a film shrinker for a refrigerator heat shrinkable film packaging apparatus in which a heating frame according to the present invention can smoothly move up and down includes a film feeder for supplying a heat shrinkable film having a property of being contracted by heat; A film lapping machine for covering the heat shrink film fed from the film feeder to the refrigerator; A film shrinker for shrinking the heat shrinkable film put on the refrigerator and applying heat to the heat shrinkable film so as to be in close contact with the refrigerator; A refrigerator transfer means for transferring the refrigerator to a predetermined working position of the film lapping device and the film shrinking device; Wherein the film shrinker comprises a plurality of guide posts which are erected on the ground, a heating frame formed so that the refrigerator is insertable in the vertical direction and supported by the guide posts so as to be able to move up and down, A gas burner mounted on the heating frame for applying heat to the heat shrinkable film placed on the refrigerator with a gas as a heat source; a heating frame driving unit for moving the heating frame up and down; and a control unit for controlling operations of the gas burner and the heating frame driving unit Wherein the heating frame driving unit includes a driving motor for moving the heating frame up and down, a weight balance supported by the guide posts so as to be able to move up and down within the plurality of guide posts, Is connected to the weight balance and the other end is connected to the heating frame Linkage linked to a side chain, and such that the interconnected weight balance and heating the frame by the linkage chain-elevating in a direction facing each other characterized in that configured to include a sprocket wheel to be supported is the interlocking chain becomes over.

According to the present invention, there is provided a film shrinker for a refrigerator heat shrinkable film packaging apparatus in which a heating frame is moved upward and downward according to the present invention, wherein the heating frame includes a pair of opposed width frames and a pair of opposed width frames, Wherein the driving frame drive unit further comprises a first rotation center axis and a second rotation center axis provided in parallel to the upper ends of the guide posts, Wherein the sprocket wheel includes a first sprocket wheel and a third sprocket wheel fixed to the first rotation center shaft and rotated in the same direction as the first rotation center axis, A second sprocket wheel rotatably connected to the shaft, and a fourth sprocket wheel, wherein the interlocking chain is supported on the first sprocket wheel, And a first interlocking chain connected to one side of the heating frame at a position where the other end is in proximity to the first rotation center axis and a second interlocking chain supported on the second sprocket wheel and having one end and the other end, And a second interlocking chain connected to one side of the heating frame at a position close to the first sprocket wheel and the second sprocket wheel, And a third interlocking chain connected to one side of the heating frame at a position near the second rotation center axis.

With the above construction, the film squeezer for a refrigerator heat shrinkable film packaging apparatus in which the heating frame according to the present invention can smoothly move up and down can easily balance a heating frame with a relatively small force by a combination of a driving motor, a weight balance, So that it can be smoothly moved up and down.

1 is a schematic view of a refrigerator heat shrinkable film packaging apparatus according to an embodiment of the present invention
2 is a perspective view of a film systole according to an embodiment of the present invention.
Figure 3 is a side view of the film systole according to one embodiment of the present invention.
4 is a perspective view conceptually showing the operating state of a heating frame driving unit of the film systolic according to an embodiment of the present invention;
FIG. 5 is a perspective view of a main part of a film systole according to an embodiment of the present invention.
6 is a plan view schematically showing a heating frame operation state of the film systolic according to an embodiment of the present invention.
FIG. 7 is a schematic view showing a gas burner of a film systole according to an embodiment of the present invention

Hereinafter, a film squeezer for a refrigerator heat shrink film packaging apparatus in which the heating frame according to the present invention can be easily lifted and lowered will be described in detail with reference to the embodiments shown in the drawings.

1 is a configuration diagram of a refrigerator heat shrinkable film packaging apparatus according to an embodiment of the present invention.

1, a refrigerator heat shrink film packaging apparatus according to an embodiment of the present invention includes a film feeder 10 for supplying a tube-shaped heat shrinkable film F having a property of being contracted by heat; A film wrapping machine 20 for wrapping the heat shrink film F on the refrigerator R so that the refrigerator R is inserted into the internal space of the heat shrink film F supplied from the film feeder 10; A film shrinker 30 for shrinking the heat shrinkable film F covering the refrigerator R and applying heat to the heat shrinkable film F so as to be in close contact with the refrigerator R; A refrigerator transfer means (40) for transferring the refrigerator (R) to a predetermined working position of the film wiping device (20) and the film shrinking device (30); .

FIG. 2 is a perspective view of a film systole according to an embodiment of the present invention, FIG. 3 is a side view of a film systole according to an embodiment of the present invention, FIG. 4 is a cross- FIG. 5 is a perspective view of a main portion of a film sagging device according to an embodiment of the present invention. FIG. 6 is a conceptual view illustrating a heating frame operation state of the film sagging device according to an embodiment of the present invention. FIG. 7 is a schematic view showing a gas burner of a film squeezer according to an embodiment of the present invention.

2 to 7, the film shrinker 30 is configured such that the heat shrinkable film F, which is wrapped on the refrigerator R by the film wrapper 20, is shrunk and closely contacted with the refrigerator R, The film shrinking apparatus for a refrigerator heat shrinkable film packaging apparatus according to an embodiment of the present invention includes a guide post 31, a heating frame 32, a gas burner 33, a heating frame driving section 34, an open hearth cooling section 35, and a film contraction control section 36.

The guide posts 31 are installed on the ground so as to support the heating frame 32 so that the heating frame 32 can ascend and descend. In one embodiment of the present invention, the heating frame 32 includes a pair of width frames 321, And a pair of width frames 322. The four pillars are located at angled corners of the heating frame 32 in consideration of points formed by the combination of the frame 322 and the pair of width frames 322.

The heating frame 32 is formed such that the refrigerator R transferred to the predetermined working position of the film systeer 30 by the refrigerator transporting means 40 is vertically insertable into the guide post 31, And the gas burner 33 is installed on the opened inner side.

The heating frame 32 is formed by a combination of a pair of width frames 321 facing each other and a pair of width frames 322 facing each other so that the refrigerator R can be inserted upward and downward Wherein the pair of width frames (321) and / or the pair of width frames (322) are controlled by the film shrinkage control section (36) do.

That is, the heating frame 32 can be varied in width and / or width, so that the outer surface of the refrigerator R and the gas of the refrigerant R, which are inserted into the heating frame 32, It is possible to adjust so that the burning port 332 of the burner 33 maintains mutually proper spacing distance (preferably about 150 mm or less).

6, the pair of width frames 321 are fixed, and the pair of width frames 322 are moved back and forth along the length direction of the width frame 321. In this embodiment, So that the distance between the pair of width frames 322 can be adjusted.

The gas burner 33 is configured to apply heat to the heat shrinkable film F covering the refrigerator R with a gas as a heat source and has a gas supply source 331, a coke 332, a gas supply pipe 333, , And a gas valve (334).

The gas supply source 331 may be constituted by a tank in which the gas is stored, and is connected to the crater 332 by the gas supply pipe 333.

The crater 332 is connected to the gas supply source 331 and the gas supply pipe 333 and is ignited and radiates a flame toward the heat shrinkable film F covered by the refrigerator R and directly applies heat Are arranged at regular intervals on the opened inner side surface of the heating frame (32).

The gas supply pipe 333 is connected to the gas supply source 331 and the crater 332 and supplies gas to the crater 332 while the gas pressure is controlled by the regulator 335, In an embodiment of the present invention, as shown in FIG. 7, the flow rate of the gas supplied to the firebox 332 is controlled by the simplest method, and the flow rate of the gas supplied to the firebox 332 according to the standard of the refrigerator R, The gas supply piping 333 connected to the crater 332 is provided with two gas supply pipes 3331 and 3332 for controlling the thermal power of the flame emitted from the pipe 332, Two regulators 3351 and 3352, and first and second gas valves 3341 and 3342 are installed.

The gas valve 334 is controlled by the film shrinkage controller 36 and opens and closes the gas supply pipe 333. In an embodiment of the present invention, the gas supply pipe 333 includes a plurality of gas supply pipes 333, First and second gas valves 3341 and 3342 are installed in the first and second gas supply pipes 3331 and 3332, respectively.

4, the heating frame driving unit 34 includes a driving motor 341, a weight balance 342, an interlocking chain 342, A sprocket wheel 344, a first rotating center shaft 345, and a second rotating center shaft 346. The sprocket wheel 344 rotates in the clockwise direction.

The first rotation center shaft 345 and the second rotation center shaft 346 are arranged parallel to the upper end of the guide post 31. In one embodiment of the present invention, The center shaft 345 is rotatably supported by the guide post 31 and the second rotation center shaft 345 is fixed to the guide post 31.

The driving motor 341 is configured to move the heating frame 32 upward and downward and rotate the first rotation center shaft 345 in one embodiment of the present invention.

The weight balance 342 has a predetermined weight for canceling the weight of the heating frame 32 and is supported so as to be lifted up and down within four guide posts 31 each having a predetermined weight in the embodiment of the present invention .

The interlocking chain 343 has one end connected to the weight balance 342 and the other end connected to one side of the heating frame 32. In one embodiment of the present invention, A second interlocking chain 3432, and a third interlocking chain 3433. The detailed description thereof will be given later.

The sprocket wheel 344 is supported by the interlocking chain 343 so that the interlocking chain 343 is lifted up and down in a direction in which the weight balance 342 and the heating frame 32 are mutually opposed A first sprocket wheel 3441, a second sprocket wheel 3442, a third sprocket wheel 3443, and a fourth sprocket wheel 3444 in one embodiment of the present invention.

The first sprocket wheel 3441 and the third sprocket wheel 3443 are fixed to the first rotation center shaft 345 and rotated in the same direction as the first rotation center shaft 345.

The second sprocket wheel 3442 and the fourth sprocket wheel 3444 are rotatably connected to the second rotation center shaft 346 and the fourth sprocket wheel 3444 is rotatably connected to the third sprocket wheel 3444. [ (3443).

The first interlocking chain 3431 is supported on the first sprocket wheel 3441 so that one end and the other end of the first interlocking chain 3431 are supported by the first sprocket wheel 3441, The weight balance 342 at a position close to the first rotation center shaft 345 and the one side of the heating frame 32 are connected.

That is, the first interlocking chain 3431 is fixed to the first rotation center shaft 345 when the drive motor 341 rotates the first rotation center shaft 345, The weight balance 342 connected to the heating frame 32 is directly raised and lowered by the rotation of the first sprocket wheel 3441 rotated in the same direction as the first sprocket wheel 3441.

The second interlocking chain 3432 is supported on the second sprocket wheel 3442 so that the weight balance 342 at one end and the other end thereof close to the second rotation center shaft 346, To the other side.

That is, the second interlock chain 3432 is supported on the second sprocket wheel 3442 rotatably connected to the second rotation center shaft 346, So that the weight balance 342 of the position can cancel the weight of the heating frame 32.

That is, when the heating frame 32 is raised by the operation of the driving motor 341, the weight balance 342 connected by the first interlocking chain 3431 and the second interlocking chain 3432 has its own weight The driving motor 341 can lift the heating frame 32 with a small force.

The third interlocking chain 3433 is supported on the third sprocket wheel 3443 and the fourth sprocket wheel 3444 at the same time so that one end of the third interlock chain 3433 is in contact with the first rotation center shaft 345, And the other end is connected to one side of the heating frame 32 at a position close to the second rotation center shaft 346. [

That is, the third interlocking chain 3433 assists the first interlocking chain 3431 and the second interlocking chain 3432, which are connected to each other in a short distance, so as not to be shifted to one side of the heating frame 32 And is configured to be lifted and lowered in a balanced manner as a whole.

The crater cooling unit 35 is controlled by the film shrinkage control unit 36 and cooling the crater 332 of the gas burner 33 in a state where the crater 332 is extinguished. 5, air blowing is performed by air blown to the heating frame 32 by spraying air toward the firebox 332 in order to effectively cool the firebox 332 even with a simple structure, And a nozzle 351.

In the case of the heat shrink film for packaging refrigerator (F), in order to efficiently heat shrink, it is necessary to instantaneously dissipate a temperature of 170 DEG C. Therefore, in the embodiment of the present invention, a conventional electric burner, And a gas burner 33 for radiating a flame in a direction toward the heat shrinkable film F but not for use.

When the gas burner 33 is used as the heat source of the film shrinker 30, the firebox 332 is repeatedly ignited and extinguished periodically. In this case, 332 are not cooled, ignition and extinguishing are repeated as well as the heat due to the flame emitted from the burning port 332 over time, and the heat radiated from the burning burning port 332 itself is transferred to the heat- F and the heat radiated toward the heat shrinkable film F changes with the lapse of time, thereby causing a problem that the quality of the quality, which is an important problem in the automation system, can not be secured.

Therefore, in order to ensure the quality of the film shrinker 30, the gas burner 33 is used as a heat source of the film shrinker 30 in the embodiment of the present invention, And the crater cooling section (35) for cooling the crater (332) in a digested state.

The film shrinkage control unit 36 controls the operation of the heating frame 32, the gas burner 33, the heating frame driving unit 34 and the crater cooling unit 35, The heating force of the gas burner 33, the rising and falling speed of the heating frame 32, and the temperature of the heating frame 32 (see FIG. 3) are set to a value set according to the standard of the refrigerator R transferred to the working position of the film shrinker 30, The width of the pair of width frames 321 and / or the width of the pair of width frames 322. [

That is, the film shrinkage controller 36 controls the film shrinker 30 according to the present invention even if the size of the refrigerator R to be supplied to the film shrinker 30 is changed, .

The thermal decomposition of the gas burner 33 by the film shrinkage control section 36 is controlled by the thermal expansion of the first and second gas valves 3341 and 3342 provided in the first and second gas supply pipes 3331 and 3332, And controlling the flow rate of the gas supplied to the firebox 332 by controlling the opening and closing.

The gas pipe cooling unit 35 controls the film shrinkage control unit 36 to control the gas valve 334 so that the gas supply pipe 333 is closed so that the crater 332 is extinguished Thereby controlling the crater cooling unit 35 to operate.

A second lower lifter 422 controlled by the transport control unit 43 of the refrigerator transport means 40 is provided on the conveyor 41 at the working position of the film syste 30 so that it can move up and down. The second lower lifter 422 lifts the refrigerator R when the film shrinker 30 is operated to secure a space in which the front end portion of the heat shrinkable film F can be curled inside the lower portion of the refrigerator R .

That is, when the air suction device (not shown) provided in the vicinity of the second lower lifter 422 is operated with the refrigerator R raised by the second lower lifter 422, The front end portion of the heat shrinkable film F to be covered is dried to the inside of the lower portion of the refrigerator R. [

The film squeezer for a refrigerator heat shrinkable film packaging apparatus in which the heating frame as described above and shown in the drawing can move up and down is only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention . The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

R refrigerator
F heat shrinkable film
10 film feeder
20 film wrapping machine
30 film systole
31 Guide posts
32 heating frames
321 wide frame
322 width frame
33 Gas Burner
331 Gas source
332 fireworks
333 Gas supply piping
334 gas valve
335 regulator
34 Heating frame driving part
341 drive motor
342 Weight balance
343 Interlocking Chain
344 Sprocket wheel
345 First rotation center axis
346 2nd rotation center axis
35 Zone cooling section
351 Air injection nozzle
36 film shrinkage control section
40 Refrigerator transporting means

Claims (2)

A film feeder for supplying a heat-shrinkable film having a property of being contracted by heat; A film lapping machine for covering the heat shrink film fed from the film feeder to the refrigerator; A film shrinker for shrinking the heat shrinkable film put on the refrigerator and applying heat to the heat shrinkable film so as to be in close contact with the refrigerator; A refrigerator transfer means for transferring the refrigerator to a predetermined working position of the film lapping device and the film shrinking device; The film systole of the refrigerator heat shrink film packaging apparatus,
The film shrinking device includes a plurality of guide posts that are erected on the ground, a heating frame formed to be vertically insertable into the refrigerator and supported by the guide post so as to be able to move up and down, A gas burner for applying heat to the heat shrinkable film placed on the refrigerator; a heating frame driving part for moving the heating frame up and down; and a film shrinkage control part for controlling the operation of the gas burner and the heating frame driving part,
The heating frame driving unit includes a driving motor for moving the heating frame up and down, a weight balance having a predetermined weight and supported so as to be able to move up and down within the plurality of guide posts, And a sprocket wheel connected to the one side of the heating frame and the sprocket wheel supported by the interlocking chain so that the weight balance and the heating frame connected to each other by the interlocking chain are raised and lowered in mutually opposing directions A film systole for refrigerator heat shrinkable film packing device that can smoothly move up and down the heating frame. The method according to claim 1,
Wherein the heating frame is formed in a rectangular frame shape by a pair of width frames opposed to each other and a pair of width frames facing each other,
The heating frame driving unit may further include a first rotation center axis and a second rotation center axis provided in parallel to the upper ends of the guide posts,
Wherein the drive motor is configured to rotate the first rotation center shaft,
Wherein the sprocket wheel includes a first sprocket wheel and a third sprocket wheel which are fixed to the first rotation center shaft and are rotated in the same direction as the first rotation center axis and a second sprocket wheel and a second sprocket wheel rotatably connected to the second rotation center shaft, A sprocket wheel, and a fourth sprocket wheel,
The first sprocket chain being supported on the first sprocket wheel and having one end and the other end connected to one side of the heating frame and the weight balance at a position close to the first rotation center shaft, A second interlocked chain supported on the wheel and connected to one side of the heating frame and having a weight balance at a position where one end and the other end are close to the second rotation center shaft; And a third interlocking chain having one end connected to a weight balance at a position close to the first rotation center axis and the other end connected to one side of a heating frame at a position close to the second rotation center axis Wherein the heat-shrinkable film of the heat-shrinkable film packaging device for the refrigerator is smoothly moved up and down.

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