KR101974181B1 - Apparatus for making disposable plastic cup - Google Patents

Abstract

According to the present invention, an apparatus for manufacturing a disposable plastic cup includes: a fabric roller for unwinding a synthetic resin film fabric to supply the same; a holding member for holding the fabric roller; a fabric supply adjusting roller for adjusting transfer of the film fabric conveyed from the fabric roller; a transfer roller for transferring the film fabric conveyed from the fabric supply adjusting roller; a preheating member for preheating the film fabric conveyed from the transfer roller; a forming unit for forming the film fabric passing through the preheating member; a crushing member for crushing a residual film fabric passing through the forming unit; and a hopper member for receiving and discharging a crushed fabric conveyed from the crushing member. The apparatus can reduce manufacturing costs by reducing manpower required in work and increasing work yield, and can prevent unnecessary waste of raw materials by supplying the film fabric to a precise position with less power. Further, the apparatus can prevent misoperation of the apparatus due to static electricity even in case of a long term operation, and promote a pleasant work environment by preventing combustible components generated from the film fabric from being scattering into a workplace.

Description

[0001] APPARATUS FOR MAKING DISPOSABLE PLASTIC CUP [0002]

The present invention relates to an apparatus for manufacturing a disposable plastic cup or lid for containing coffee or beverage, and more particularly to an apparatus for manufacturing a disposable plastic cup or lid for holding coffee or beverage, Disclosed is a disposable plastic cup manufacturing apparatus.

As the processing, storage and distribution of beverages or foodstuffs became industrialized, mass production was required, and the packaging technology of food was developed accordingly.

BACKGROUND OF THE INVENTION [0002] Recently, packaging materials ranging from plastic, paper, metal cans and glass bottles have been used as packaging materials for food packaging.

The role of packaging materials in the distribution and sale of beverages or foods is very large and serves as a shipping container while preventing food from decaying.

BACKGROUND ART Recently, paper or synthetic resin material is used as a beverage or a food packaging material. Paper has advantages of low cost, but it has a disadvantage that it can be permeated when a liquid is received in a time lapse.

Due to the high strength of the weight and the plastic nature of its chemical resistance and ease of molding, it has recently become a disposable take-out container for shops selling coffee or beverages, with a plastic cup and lid To the outside.

Normally, disposable plastic cups or lids are manufactured and supplied in large quantities due to the characteristics of disposable ones, so malfunctions or failures of the apparatuses generated during the operation of the manufacturing apparatus are a factor that significantly deteriorate the production yield.

In addition, during the operation of the apparatus, a plastic cloth for manufacturing a cup or a lid must be continuously supplied. However, the synthetic resin material, which is wrapped in a large amount in a roll state, is too heavy to handle easily.

Further, positional deviation and wrinkling or deformation of the fabric, which may occur in the process of transferring the synthetic resin material for forming a cup or a lid, may cause a defective product to be finally formed.

It is an object of the present invention to provide a disposable plastic cup manufacturing apparatus which can easily supply and replace a film fabric required for producing a plastic cup or a lid and can supply a fabric without interruption and can be easily handled, .

It is another object of the present invention to provide a disposable plastic cup manufacturing apparatus which can supply a film fabric to a correct position with less force, thereby preventing unnecessary waste of raw materials.

It is still another object of the present invention to provide a disposable plastic cup manufacturing apparatus that is configured to prevent malfunction of the apparatus due to static electricity even in long term operation.

It is still another object of the present invention to provide a disposable plastic cup manufacturing apparatus capable of preventing a combustible component generated from a film fabric from scattering into a workplace.

In order to accomplish the above object, according to the present invention, there is provided an apparatus for manufacturing a disposable plastic cup, which comprises a raw roll for unwinding and feeding a synthetic resin film fabric, a mounting member for mounting the raw rollers, A preheating member for preheating the film material transferred from the transfer roller, and a preheating member for preheating the film material transferred from the transferring roller, And a hopper member for receiving and discharging the crushed fabric conveyed from the crushing member. The crushing member includes a crushing member for crushing the crushed raw fabric.

Preferably, a non-load area is formed between the far-end feed control roller and the feed roller by the weight of the film, and a deflection sensing member for detecting the deflection of the film is provided in the no-load area.

Here, the stationary member includes a frame portion constituting a skeleton of the stationary member, a tail roller mounting portion provided in the frame portion, a cylinder portion provided in the frame portion, and a transmission portion rotated by the cylinder portion A lower end portion of the transmission portion is rotatably coupled to a lower portion of the frame portion, a side portion of the transmission portion is relatively rotatably coupled to the cylinder portion, and a lower end portion of the cylinder portion is rotatably coupled to the lower portion of the frame portion.

In addition, a pair of seating grooves for seating the far-end rollers is formed in the far-end roller seating portion.

In addition, an end seating groove for seating the far-end rollers is formed at the upper end of the transmission portion.

Preferably, a pushing push portion for moving the far end rollers in the direction of the far end feed adjusting rollers is formed at the forward end of the end receiving recess in the delivery portion.

On the other hand, the far-end feed adjusting roller includes a pair of rollers, and the far-end feed adjusting roller is operated in conjunction with the deflection sensing member.

Here, when it is detected by the deflection sensing member that the film material is pre-determined to be a predetermined amount, the pair of rollers are moved in a direction in which the rollers are disengaged from each other, thereby stopping the conveyance of the film material.

Preferably, the deflection sensing member includes a first arm disposed at a position where the deflection sensing member contacts the far end, a second arm disposed to extend to the opposite side of the first arm, And a sensor for sensing.

Here, the first arm and the second arm are installed to rotate around a rotation axis, and a blocking portion formed at an end of the second arm with a width larger than the diameter of the second arm is formed.

The conveying roller includes an upper conveying roller and a lower conveying roller, and the surface of the upper conveying roller and the lower conveying roller is formed with a spiral recess formed symmetrically from the center to both sides thereof.

Preferably, an expanding member is provided between the transporting roller and the preheating member for expanding the film material to be transported.

Here, the spreader member includes an upper spreader member and a lower spreader roller, wherein the upper spreader member includes a fixed shaft and a contact pressing portion connected to the fixed shaft to face the lower spreader roller.

In addition, a plurality of circular concave portions formed along the circumferential direction are formed on the surfaces of the contact pressing portion and the lower spreading roller.

Preferably, the preheating member and the molding portion are provided inside the housing member, and the filtering member is connected to the housing member.

Here, the filtering member is provided with a filter unit, an intake fan for sucking air through the filter unit, and a combustion unit for burning a combustible component contained in the air sucked into the filtering member.

Preferably, a ground line is connected to the rotation axis of the deflection sensing member.

According to the present invention, it is possible to reduce manufacturing cost by reducing the manpower required for the work and increasing the work yield.

In addition, since the film fabric can be supplied to the correct position with less force, unnecessary waste of the raw material can be prevented.

In addition, malfunction of the apparatus due to static electricity can be prevented even in long term operation.

In addition, it is possible to prevent a flammable component generated from the film fabric from scattering inside the workplace, thereby providing a pleasant working environment.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a configuration diagram of an apparatus for manufacturing a disposable plastic cup according to the present invention,
FIG. 2 is a side view of the mounting member included in the manufacturing apparatus,
Fig. 3 is another side view of the abovementioned mounting member,
Fig. 4 is another side view of the abovementioned mounting member,
5 is a perspective view of the abovementioned mounting member,
6 is a perspective view of the far-end feed control roller,
7 is a side view of the deflection sensing member,
8 is a perspective view of the deflection sensing member,
Fig. 9 is a perspective view of the conveying roller included in the manufacturing apparatus,
10 is a perspective view of the spreader member included in the manufacturing apparatus,
11 is an internal configuration diagram of the filtering member.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, the terms used in the specification and claims should not be construed in a dictionary sense, and the inventor may, on the principle that the concept of a term can be properly defined in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

2 is a side view of a mounting member included in the manufacturing apparatus, Fig. 3 is another side view of the mounting member, Fig. 4 is a side view of the mounting member of the mounting member, 7 is a side view of the deflection sensing member, FIG. 8 is a perspective view of the deflection sensing member, and FIG. 9 is a side view of the deflection sensing member. FIG. FIG. 10 is a perspective view of the spreading member included in the manufacturing apparatus, and FIG. 11 is an internal structural view of the filtering member.

Referring to FIG. 1, an apparatus for manufacturing a disposable plastic cup according to the present invention comprises a raw material roller 10 for uncoiling and feeding a synthetic resin film material, a mounting member 20 for mounting the raw material roller 10, A raw material feed regulating roller 30 for regulating the conveyance of the film material 2 transferred from the raw material roller 10 and a conveying roller for conveying the film raw material 2 conveyed from the raw material feed adjusting roller 30, A preheating member 50 for preheating the film material 2 transferred from the conveying roller 40 and a forming unit 60 for forming a film material having passed through the preheating member 50, And a hopper member 90 for receiving and discharging the crushed fabric conveyed from the crushing member 80. The crushing member 80 is provided with a crushing member 80 for crushing the residual film having passed through the forming units 60 and 70, ).

The disposable plastic cup manufacturing apparatus according to the present invention can be used for manufacturing a cup body or for manufacturing a cup lid.

Usually, the cup body and the lid are formed of a synthetic resin material of the same material. The cup body and the lid can be used for manufacturing the cup body or the lid by replacing the molds of the molding portions 60 and 70 included in the manufacturing apparatus.

The fabric rollers 10 are initially wound with a thin synthetic resin film fabric 2 wound around the fabric rollers 10 and the fabric rollers 10 are loosened and fed with the fabric 2 in a state of being seated on the fabric roll 20.

When the synthetic resin material is wound around the fabric rollers 10 in the form of a roll, it becomes very heavy for human handling, and it is very troublesome to lift the fabric rollers 10, It becomes a hard work.

The stationary member 20 is configured to receive the farther end rollers 10 for unloading and feeding the raw material 2 to the forming portions 60 and 70.

2 to 5, the stationary member 20 includes a frame portion 26 constituting a skeleton thereof, a tail roller mounting portion 28 provided on the frame portion 26, A cylinder portion 22 provided at a lower portion of the cylinder portion 22 and a transmission portion 24 rotated by the cylinder portion 22.

Here, the lower end of the transmission portion 24 is rotatably coupled to the lower portion of the frame portion 26 by a shaft.

The side portion of the transmission portion 24 is coupled to the cylinder portion 22 by a shaft 244 in a relatively rotatable manner.

The lower end of the cylinder 22 is rotatably coupled to a lower portion of the frame 26 through a shaft 222.

A pair of seating grooves 282 and 284 for seating the far-end rollers 10 are formed in the far-end roller seating portion 28.

An end receiving groove 242 for receiving the far-end rollers 10 is formed at an upper end of the transmitting portion 24. [

A pressing push portion (not shown) for moving the far end rollers 10 in the direction of the far end feed adjusting rollers 30 is provided in front of the end receiving grooves 242 in the conveying portion 24, 243 are formed.

2, when the cylinder shaft 224 is elongated in the cylinder portion 22, the end seating groove 242 of the transmission portion 24 is provided with the mounting member 20 And is lowered near the floor of the site.

The end rollers 10 can be easily seated in the end receiving grooves 242 when the end receiving grooves 242 are lowered in the vicinity of the bottom.

That is, in the state where the end receiving groove 242 is lowered to the floor, the far end rollers 10 can be easily rotated by rolling the end rollers 10 or easily placing the end rollers 10 in the end receiving grooves 242 .

3, when the length of the cylinder shaft 224 is shortened, the end receiving groove 242 is raised so that the farther end rollers 10 are positioned on the farthest end of the farthest end of the farthest end of the end rollers 28, As shown in Fig.

4, when the cylinder shaft 224 is further contracted, the pushing pushing portion 243 comes into contact with the far-end rollers 10 and exerts forward force, The tail roller 10 is moved to the front seating groove 284.

At this time, to prevent the far end roller 10 from being detached from the front receiving groove 284, a separation preventing edge 286 is formed at the front end of the far end roller receiving portion 28.

Then the cylinder shaft 224 is stretched again to move the other end rollers 10-1 to the end receiving grooves 242 and move them to the rear receiving grooves 282. As a result, 10, and 10-1 may be mounted on the mounting member 20.

Thus, when the synthetic resin film web wrapped around the rollers 10 mounted on the front seating grooves 284 is exhausted, the rear axles 224 are moved to the rear seating grooves 282 by a simple operation of shortening the cylinder shafts 224 The stationary rollers 10-1 can be quickly moved to the front seating grooves 284 so that the supply of the film material can be performed.

The cylinder portion 22 and the tail roller seating portion 28 may be provided on both sides of the frame portion 26. The cylinder portion 22 is connected to the operation portion of the remote controller or operation switch Lt; RTI ID = 0.0 > and / or < / RTI >

As described above, by rotating the transmission portion 24 by the operation of the cylinder portion 22, the heavy tail roller 10 is easily mounted on the stationary member 20 and the tail roller 10- 1 can be moved forward.

A raw material supply regulating roller 30 for regulating the transport of the film material 2 transferred from the raw material rollers 10 is provided in front of the stationary member 20.

 A no-load region 2-1 is formed between the far-end feed adjusting roller 30 and the feed roller 40. The unloaded region 2-1 is formed by the weight of the film material 2 being downwardly biased by its own weight.

In the no-load region 2-1, a deflection sensing member 110 for sensing deflection of the film material is provided.

6, the far-end feed adjusting roller 30 includes a pair of rollers 32 and 34, and a pair of rollers 32 and 34 included in the far-end feed adjusting roller 30, Are operated in conjunction with the deflection sensing member (110).

When the film material 2 is sensed to be sagged by the predetermined amount by the deflection sensing member 110, the pair of rollers 32 and 34 included in the far-end feed adjusting roller 30 are released from each other Direction, thereby stopping the conveyance of the film material.

For example, when the film material 2 is not sensed to be sagged by a predetermined amount by the deflection sensing member 110, the upper roller 32 included in the far-end feed adjusting roller 30 moves downward And is rotated together with the lower roller 34, thereby to transfer the fabric.

The upper roller 32 is moved upward so as not to be interlocked with the lower roller 34 when the film material 2 is sensed to be slack by a predetermined amount by the deflection sensing member 110, The conveyance of the film material 2 can be stopped.

Thus, a constant amount of film material is always supplied to the no-load region 2-1.

The film material 2 supplied to the no-load region 2-1 is supplied to the forming portions 60 and 70 through the conveying roller 40. [

As described above, by forming the no-load region 2-1 between the far-end feed adjusting roller 30 and the feed roller 40, the feed roller 40 and the forming portions 60, The film material 2 can be supplied to the conveying roller 40 and the forming portions 60 and 70 at a constant tension.

If the film material is moved only by the action between the far-end feed adjusting roller 30 and the feed roller 40 or the forming portions 60 and 70 without the no-load region 2-1, A constant tensile force acts on both sides of the film material disposed between the transfer roller 30 and the forming rollers 40 or between the forming rollers 40 and 70.

That is, a predetermined tension is applied to both side portions of the film material by the far-end feed adjusting roller 30 and the feed roller 40 or by the far-end feed adjusting roller 30 and the forming portions 60 and 70 The deformation or wrinkle of the film can be generated according to the change in the tension state applied by the far-end feed adjusting roller 30 and the feed roller 40 or the forming portions 60 and 70.

This may interfere with the formation of a molded cup or lid having a uniform thickness over the entire area, which may result in defects due to product deformation.

Thus, by forming the no-load region 2-1 in which the film material is squeezed by its own weight as described above, the material can be conveyed in a constant tension state by the conveying roller 40 or the forming portions 60 and 70. [

7 and 8, the deflection sensing member 110 includes a first arm 1106 disposed at a position where the deflection sensing member 110 contacts the far end, and a second arm 1106 disposed to extend to the opposite side of the first arm 1106 A second arm 1104, and a sensor 1108 for sensing whether the second arm 1104 is located in front.

The sensor 1108 may comprise, for example, an optical sensor.

The first arm 1106 and the second arm 1104 are installed so as to rotate around a rotation axis 1102 and the second arm 1104 has a diameter A blocking portion 1105 having a large width is formed.

The first arm 1106 and the second arm 1104 are both formed of a conductive metal, and a ground line (not shown) is connected to the rotation axis 1102.

When the distal end 2-1 of the first arm 1106 contacts the first arm 1106, the second arm 11040 is rotated about the rotation axis 1102 so that the blocking The portion 11050 is raised.

Thus, the rise of the blocking portion 1105 is sensed by the sensor 1108, thereby detecting that the deflection amount of the film material is a predetermined amount.

When the first arm 1106 is raised by the conveyance of the film material by the conveying roller 40 and the deflection amount is reduced, the blocking portion 1105 is moved in accordance with the rotation of the second arm 1104 And is positioned in front of the sensor 1108.

As a result, the first and second arms and the blocking part are continuously rotated clockwise or counterclockwise according to the deflection amount of the film material, and consequently, have.

By grounding the electrostatic component of the film material 2 through the first arm 1106 by connecting a ground line to the rotating shaft 1102, static electricity sparking occurs in the manufacturing apparatus according to the present invention even for a long period of driving Can be prevented.

Meanwhile, the conveying roller 40 conveys the unloaded film original 2-1, which is conveyed from the far-end feed adjusting roller 30, to the forming sections 60 and 70 side.

Here, the conveying roller 40 may be rotated by a motor to actively convey the raw material, or the raw material moved by the action of the forming portions 60 and 70 may be manually conveyed in an idle state .

9, the conveying roller 40 includes an upper conveying roller 42 and a lower conveying roller 44, and on the surfaces of the upper conveying roller 42 and the lower conveying roller 44, Spiral concave portions 43 and 45 are formed symmetrically from the central portion toward both sides.

In the spiral recesses 43 and 45 formed on the surfaces of the upper and lower conveying rollers 42 and 44, the edge portions are subjected to a fine frictional force on the surface of the conveyed film material. As described above, By forming the spiral concave portions 43 and 45 symmetrically, the force to flatly spread the film is finely acted while the film is transported straight toward the forming portions 60 and 70.

Thus, it is possible to prevent the fabric from leaning to the one side portion in the course of the cloth feeding and to supply the fabric to the forming portions 60, 70 at a uniform position.

The film web conveyed by the conveying roller 40 enters the forming sections 60 and 70 in a preheated state through the preheating member 50.

The preheating member 50 includes a heat generating lamp for smoothly deforming the fabric through the forming units 60 and 70. For example, the preheating member may be preheated in a range of 100 to 120 degrees .

In another embodiment of the present invention, as shown in FIG. 10, an unfolding member 130 may be installed between the transporting roller 40 and the preheating member 50 to unfold the transported film web.

The spreader member 130 includes an upper spreader member 132 and a lower spreader roller 134.

The upper spreading member 132 includes a fixed shaft 131 and a contact pressing part 133 connected to the fixed shaft 131 and facing the lower spreading roller 134.

The contact pressing portion 133 faces the lower unfolding roller 134 in a state in which both side portions of the fixed shaft 131 are rotatably supported and consequently the contact pressing portion 133 of the upper spreading member 132 (133) is in a free-end state.

The film material 2 is conveyed between the lower spreading roller 134 and the contact pressing part 133.

Here, a plurality of circular depressions 1332 and 1342 formed along the circumferential direction are formed on the surfaces of the contact pressing portion 133 and the lower spreading roller 134.

Thus, by the action of the contact pressing portion 133 and the lower spreading roller 134, even when the conveyed film fabric is spread flatly, the frictional force of the corners of the circular recesses 1332 and 1342, Can be transported straight.

The film material having passed through the preheating member 50 is formed into a cup or a lid while passing through the forming portions 60 and 70.

The first forming part 60 of the forming parts 60 and 70 is a forming part for forming the shape of a cup or a lid by deforming the film material and the second forming part 70 forms a cup or a lid shape It is a forming part for cutting and separating from the film fabric.

Since the heating of the film fabric is mainly performed by the preheating member 50 and the first forming unit 60, the preheating member 50 and the first forming unit 60 are installed inside the housing member 100 And a second forming part 70 may be installed outside the housing member 100.

A filtering member 120 for collecting flammable gas generated in the housing member 100 is connected to the side of the housing member 100 through a corrugated pipe 1206.

11, a filter 1204 and an intake fan 1210 for sucking air through the filter 1204 are installed in the housing 1202 of the filtering member 120. As shown in FIG.

A combustion unit 1208 for burning a combustible component contained in the air sucked into the filtering member 120 is installed in the upper portion of the housing 1202.

The combustion unit 1208 may be formed of a heating wire or an electrothermal coil so that combustible components in the air sucked into the filtering member 120 are burned through the combustion unit 1208, It is possible to prevent the combustible gas component generated in the combustion chamber from flowing out into the workplace.

On the other hand, the remaining film material having passed through the forming portions 60 and 70 is finely crushed by the crushing member 80, and the crushed raw material is transferred to the hopper member 90.

The crushed fabric received in the hopper member 90 is packed in a bag 120 or a box and sent to a raw material processing plant to be regenerated as a film fabric.

While the present invention has been described with reference to the exemplary embodiments and the drawings, it is to be understood that the technical scope of the present invention is not limited to these embodiments and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations may be made without departing from the scope of the appended claims.

10: Fabric rollers
20:
30: Fabric feed adjusting roller
40: Feed roller
50:
60, 70:
80: crushing member
90: hopper member

Claims (17)

A fabric roller for unwinding and feeding the synthetic resin film fabric;
A mounting member for mounting the far end rollers;
A fabric feed regulating roller for regulating the transport of the film web transferred from the fabric rollers;
A conveying roller for conveying a film material conveyed from the far-end feed adjusting roller;
A preheating member for preheating the film material transferred from the conveying roller;
A molding unit for molding a film material having passed through the preheating member;
A crushing member for crushing the remaining film material having passed through the forming portion;
And a hopper member for receiving and discharging the crushed fabric delivered from the crushing member,
Between the far-end feed adjusting roller and the feed roller, a no-load region in which the film material is stuck downward by its own weight is formed,
A deflection sensing member for sensing deflection of the film fabric is provided in the no-load region,
Wherein the deflection sensing member comprises: a first arm disposed at a position where the deflection sensing member contacts the fabric;
A second arm installed to extend to the opposite side of the first arm;
And a sensor for sensing whether the second arm is located in front of the second arm. The method according to claim 1,
The above-
A frame part forming a frame of the mounting member;
A tail roller mounting part installed on the frame part;
A cylinder portion provided in the frame portion;
And a transmitting portion that is rotated by the cylinder portion,
The lower end of the transmission portion is rotatably coupled to a lower portion of the frame portion, the side portion of the transmission portion is coupled to the cylinder portion so as to be rotatable relative to the cylinder portion,
And a lower end portion of the cylinder portion is rotatably coupled to a lower portion of the frame portion. 3. The method of claim 2,
And a pair of seating grooves for seating the far-end rollers are formed on the far-end roller seating portion. 3. The method of claim 2,
Wherein an end seating groove for seating the far-end rollers is formed at an upper end of the transmitting portion. 5. The method of claim 4,
Wherein the pushing portion is formed at a front portion of the end receiving groove in the delivery portion to contact the end rollers and move the end rollers toward the end feed adjusting rollers. The method according to claim 1,
Wherein the far-end feed regulating roller includes a pair of rollers,
Wherein the far-end feed adjusting roller is operatively associated with the deflection sensing member. The method according to claim 6,
Characterized in that when the film material is sensed to be sagged by a predetermined amount by the deflection sensing member, the pair of rollers are moved in a direction in which they are disengaged from each other, thereby stopping the conveyance of the film material. Manufacturing apparatus. The method according to claim 1,
The first arm and the second arm are installed to rotate around a rotation axis,
Wherein a blocking portion formed at an end of the second arm with a width larger than a diameter of the second arm is formed. The method according to claim 1,
Wherein the conveying roller includes an upper conveying roller and a lower conveying roller,
Wherein a spiral concave portion formed symmetrically from the center portion toward the both side portions is formed on a surface of the upper feed roller and the lower feed roller. The method according to claim 1,
And a spreading member for spreading a film material to be fed is provided between the conveying roller and the preheating member. 11. The method of claim 10,
Wherein the spreading member includes an upper spreading member and a lower spreading roller,
Wherein the upper spreading member includes a fixed shaft and a contact pressing part connected to the fixed shaft and facing the lower spreading roller. 12. The method of claim 11,
Wherein a plurality of circular concave portions formed along the circumferential direction are formed on the surfaces of the contact pressing portion and the lower spreading roller. The method according to claim 1,
The preheating member and the molding unit are installed inside the housing member,
And a filtering member is connected to the housing member. 14. The method of claim 13,
A filter unit inside the filtering member;
An intake fan for sucking air into the filter unit;
Wherein a combustion part for burning a combustible component contained in the air sucked into the filtering member is provided. 9. The method of claim 8,
And a ground line is connected to the rotating shaft. delete delete

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