KR200352181Y1 - automatic packing machine of short-necked clam - Google Patents

Abstract

In the case of continuous automatic packaging of aquatic products such as clams and shellfish including seawater, the heater part which seals the wrapping paper by heat fusion and the cutting part which cuts the junction part of the wrapping paper are dualized due to the salt remaining in the heater part. It is to prevent the bad processing of the sealing area,

The clamshell automatic packing machine according to the present invention, the clamshell supply means for periodically moving the clamshell which is accommodated by a predetermined amount in a plurality of ports that can be opened and closed on the bottom surface from the first hopper receiving the washed clamshell,

A second hopper through which a predetermined amount of clam and sea water are supplied from the clam supply means,

Wrapping paper supply means for continuously supplying the wrapping paper in the form of a film wound on a roll while maintaining the tension in the discharge port of the second hopper,

It is installed outside the outlet of the second hopper, and the expansion piece for deforming the wrapping paper supplied from the roll into a packaging bag type,

A packing bag molding part which is installed below the discharge port of the second hopper and joins the central surface of the packing bag formed by the extension piece by heat fusion with a pair of heaters;

A pair of conveying belts which are installed to face the packing bag forming part and moves the packing bags downward by closely supporting the packing bags with respect to the outlet of the second hopper,

Sealing means for joining the openings of the clamshell discharged from the second hopper and the opening of the packaging bag into which the seawater is introduced, by means of heat fusion by a pair of heaters moved forward and backward by the driving means,

It is provided downward to be spaced apart from the sealing means, and the cutting means for cutting the middle of the joint portion by the cutter after the pressing by a pair of pressing pieces forward and backward by the driving means of the packaging bag.

Description

Automatic packing machine of short-necked clam}

The present invention, in case of continuous automatic packaging of live seafood such as clam shells, sea cucumbers, sea squirts, etc., in seawater, into a wrapping paper, the salinity is dualized by dualizing a cutting portion that cuts the junction between the heater and sealing wrappers by heat sealing. The present invention relates to a clamshell automatic packaging machine that can prevent the defective processing of the sealing portion.

More specifically, the sealing of the wrapping paper by heat-sealing by a hot heater and the bonding portion of the sealed wrapping paper to be cut by the cutter in a subsequent step, so as to separate the sealing and cutting work of the wrapping paper, the salinity in the heater portion The present invention relates to a clamshell automatic packing machine which prevents the quenching and prevents leakage through the sealing part.

In general, clam shellfish promotes liver detoxification by taurine, which is contained in meat, and is effective in preventing hepatitis and relieving hangovers.It is rich in calcium and iron, including vitamin B12, which improves liver function. have.

In particular, pregnant women, children, senior citizens are very useful to prevent anemia due to high iron and minerals content, fast absorption of digestion to prevent obesity and fine skin. In addition, it contains a component that inhibits the absorption of cholesterol in the body, is known to be very effective in lowering the cholesterol level of the human body.

On the other hand, when the clam clam is packaged individually by wrapping paper, the clam clam and a predetermined amount of seawater are simultaneously placed on the wrapping paper in order to maintain the freshness of clam clam during the distribution period (that is, 3 to 5 days) after packing in the production area. It will be received and packed.

Conventionally, when a certain amount of clam (which can be applied to marine products such as sea squirts and sea cucumbers) and seawater are simultaneously accommodated in a wrapping paper and automatically packed, a seal for bonding the wrapping paper by heat-sealing by a heater maintaining high temperature, The work of cutting the wrapping paper by the cutter is unified.

For this reason, when cutting the middle part of a junction part by the cutter after joining a wrapping paper by a high temperature heater, the seawater which remains in a cut part turns into water vapor and is buried in a heater. Therefore, the sealing portion is not completely bonded due to the salt accumulated in the heater, so that seawater leaks through the sealing portion during the distribution period after packing, and thus, the freshness of the clam falls and the commerciality is deteriorated.

In addition, when the joint portion of the wrapping paper is not completely sealed and treated as a defective product, there is a problem that the price competitiveness is lowered due to the increase in labor cost because the workability of wrapping the clam is poor.

The object of the present invention is to separate the sealing and cutting work of the wrapping paper to accommodate a certain amount of aquatic products, such as clam shells, including sea water, and to separate and work, to prevent the salinity buried in the heater portion to be treated poorly It is to provide an automatic clam packing machine to prevent the damage.

Another object of the present invention is to reduce the cost and production cost by minimizing the parts constituting the driving portion for sealing and cutting the wrapping paper to accommodate the clam and sea water, and to reduce the cost of the operation smoothly after operation maintenance costs It is to provide an automatic clam packing machine to reduce the amount of waste.

Another object of the present invention is to prevent the poor treatment of the sealing portion for bonding the wrapping paper by high temperature heat fusion, to prevent the leakage of sea water to maintain the freshness of the clams during the distribution period to improve the merchandise It is to provide an automatic clam packing machine.

Another object of the present invention is to provide a clam clam automatic packaging machine that can be cost-effectively significantly reduced labor cost and cost because it is possible to mass-produce the clam clam continuously automatically.

1 is an overall perspective view of an automatic clam packing machine according to the present invention,

Figure 2 is a side view of the automatic clam packing machine according to the present invention,

Figure 3 is a perspective view of the cutting unit for cutting the heating portion and the junction to heat-sealed wrapping paper in the clam automatic packaging machine according to the present invention,

4 is a perspective view of a driving part for driving the heating part and the cutting part shown in FIG.

FIG. 5 is a side view illustrating an operation before the heating unit and the cutting unit illustrated in FIG. 3;

FIG. 6 is a side view illustrating the heating unit and the cutting unit shown in FIG. 3 during operation; FIG.

6 is a perspective view illustrating a using state of the heating unit and the cutting unit illustrated in FIGS. 3 and 4;

7 is an enlarged excerpt of the main portion of the port for discharging the clam from the hopper by a predetermined amount in the clam automatic packaging machine according to the present invention,

8 is an enlarged perspective view of a transport belt pulling a wrapping paper in a state of maintaining tension in an automatic clam packing machine according to the present invention;

9 is a state diagram used in the conveyance belt shown in FIG.

* Explanation of symbols used in the main part of the drawing

10; Clam supply

20; Hopper No. 2

30; Packing paper supply means

40; Extension

50; Packing bag molding part

60; Conveying belt

70; Sealing means

80; Cutting means

An object of the present invention described above, and the clam supply means for periodically moving the clam is accommodated by a predetermined amount in a plurality of ports that can be opened and closed from the first hopper receiving the washed clam,

A second hopper through which a predetermined amount of clam and sea water are supplied from the clam supply means,

Wrapping paper supply means for continuously supplying the wrapping paper in the form of a film wound on a roll while maintaining the tension in the discharge port of the second hopper,

It is installed outside the outlet of the second hopper, and the expansion piece for deforming the wrapping paper supplied from the roll into a packaging bag type,

A packing bag molding part which is installed below the discharge port of the second hopper and joins the central surface of the packing bag formed by the extension piece by heat fusion with a pair of heaters;

A pair of conveying belts which are installed to face the packing bag forming part and moves the packing bags downward by closely supporting the packing bags with respect to the outlet of the second hopper,

Sealing means for joining the openings of the clamshell discharged from the second hopper and the opening of the packaging bag into which the seawater is introduced, by means of heat fusion by a pair of heaters moved forward and backward by the driving means;

It is installed downward and spaced apart from the sealing means, the automatic packing of the clam, characterized in that it comprises a cutting means for cutting the middle of the joint portion by a cutter after pressing the pair of pressing pieces forward and backward by the driving means of the packing bag. By providing a machine.

According to a preferred embodiment, the above-described clam supply means,

Ports installed in the circumferential direction on the bottom surface of the rotatable first hopper and the upper and lower ends thereof open;

An opening and closing plate rotatably installed at the bottom of the first hopper to open and close the bottom of the port;

When the port containing a certain amount of clam is moved to a predetermined position by the rotation of the first hopper, the opening and closing plate is lowered and opened when the port is discharged, and when the port which discharged the clam is out of the predetermined position by the rotation of the first hopper, the opening and closing plate is lifted to lower the port. Shut off lockers,

A belt conveyor is provided for continuously supplying a clam to the second hopper by a plurality of chutes for accommodating the clam discharged from the port.

In addition, the driving means described above,

A pair of first and second gears meshed with opposite rotation directions,

An air cylinder which is connected to an air supply source and is expanded and operated when supplying compressed air;

A first moving bar having one end connected to a rod of the air cylinder and a first heater for cutting or a first pressing piece for cutting being fixed to the other end, and being moved back and forth during the expansion and contraction operation of the air cylinder;

A first crank having one end fixed to the first moving bar and the other end fixed to the rotating shaft of the first gear, the first crank rotating the first gear when the air cylinder is expanded and contracted;

A second crank, one end of which is fixed to the rotation shaft of the second gear and converts the rotational movement of the second gear into a linear movement during expansion and contraction of the air cylinder;

One end is fixed to the other end of the second crank and the second heater for cutting or the second pressing piece for cutting is fixed to the other end, and the second heater or the second pressing piece is connected to the first heater or the first pressing piece when the air cylinder is expanded and operated. And a second moving bar for advancing forward and backward with respect to it.

In addition, the aforementioned cutting means,

An air cylinder that cuts the middle of the joint of the packing bag by penetrating the through-hole formed in the second pressing piece, the cutter formed in the first pressing piece, and mounted on the back side of the first pressing piece, and moving the cutter back and forth with respect to the through-hole during expansion and contraction operation. It is provided.

In addition, a rotatable roller is formed in layers in the vertical direction on the outer surface of the discharge port facing the conveying belt so as to increase the traction force to pull the aforementioned wrapping paper.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail so that those skilled in the art to which the present invention pertains can easily carry out the present invention. It does not mean that the technical spirit and scope of the invention is limited.

As shown in Figures 1 to 9, the clamshell automatic packaging machine according to the present invention, accommodates the washed clam, a plurality of ports 12 that can be opened and closed the bottom surface from the first hopper 11 rotated in one direction It is provided with a clam supply means 10 for periodically moving the clam accommodated in a predetermined amount).

At this time, the clam supply means 10,

Opening and circumferentially installed on the bottom surface of the rotatable first hopper 11 and installed in the circumferential direction and the bottom of the first hopper 11 so as to open and close the port 12, the upper and lower ends are opened, When the plate 13 and the port 12 in which a predetermined amount of clam is accommodated by the rotation of the first hopper 11 move to a predetermined position, the port 12 which opens and closes the opening and closing plate 13 downward and discharges the clam is When the first hopper 11 rotates out of a predetermined position, the locker 14 which lifts the opening and closing plate 13 to close the bottom of the port 12, and a plurality of chutes which accommodate the clam discharged from the port 12 A belt conveyor 16 is provided to continuously supply the clam to the second hopper 20 by a predetermined amount (15).

In addition, the second hopper 20 through which the seawater is passed by a predetermined amount of clam and the seawater supply pipe 100 supplied from the clam supply means 10, and a wrapping paper 31 wrapped in a roll 32. ) Is provided with a wrapping paper supply means 30 which continuously supplies a predetermined length below the second hopper 20 to the pipe-shaped outlet port 22 extending in a state of maintaining tension.

In addition, it is installed outside the outlet 22 of the second hopper 20, the expansion piece 40 for shape-shaping the wrapping paper 31 supplied from the roll 32 into a packaging bag, and the second hopper 20 Is installed below the discharge port 22 of the packaging bag, and the packaging bag forming part 50 is joined to the center surface of the packaging bag 31a formed by the extension piece 40 by heat fusion by a pair of heaters 51. Equipped.

In addition, the packing bag is formed so as to face the molding unit 50, the drive roller (60a) to support the packing bag against the discharge port 22 of the second hopper 20 to move the packing bag (31a) downward. And a pair of conveying belts 60 (a timing belt is used) for endless track movement by the driven roller 60b.

At this time, the rotatable roller 61 is provided in a layer in the vertical direction on the outer surface of the discharge port 22 facing the transfer belt 60 so as to increase the traction force to pull the wrapping paper 31 described above.

In addition, the sealing means for joining the opening of the clam discharged from the above-described second hopper 20 and the opening of the packaging bag 31a into which the sea water is introduced by a pair of heaters thermally fused by a pair of heaters moved forward and backward by the driving means A. (70).

At this time, the driving means (A) for advancing the heater back and forth to seal the above-described packaging bag,

And a pair of first and second gears 72 and 73 which are rotated in opposite directions and connected to an air supply source (not shown) such as an air compressor to expand and drive the compressed air when compressed air is supplied. And, one end is connected to the rod (74a) of the air cylinder 74, the first heater 71 for sealing is fixed to the other end, the first moving bar 76 is moved forward and backward during expansion and contraction operation of the air cylinder (74) And a first end of which is fixed to the first moving bar 76 and the other end of which is fixed to the rotation shaft 72a of the first gear 72 and rotates the first gear 72 when the air cylinder 74 expands and contracts. Crank 77 and a second crank 78, one end of which is fixed to the rotation shaft 73a of the second gear 73 and converts the rotational movement of the second gear 73 into linear motion during expansion and contraction operation of the air cylinder 74. ) And one end is fixed to the other end of the second crank 78 and the second heater 75 for sealing is fixed to the other end, and the second heater 75 is first heater 71 when the air cylinder 74 is stretched and driven. The second to advance back and forth about) And a dongba 79.

In addition, it is provided downwardly spaced apart from the above-mentioned sealing means 70, by a pair of first and second pressing pieces 81 and 82, which are joined forward and backward by the driving means B, and the bonding portion of the packaging bag 31a. It is provided with a cutting means 80 for cutting the middle of the joint portion by the cutter 83 after pressing.

At this time, the driving means (B) of the cutting means 80 for cutting the junction of the above-described packaging bag (31a) is substantially the same as the driving means (A) of the above-mentioned sealing means 70, a description thereof will be omitted. Reference numerals of overlapping members are the same.

The cutting means 80 described above includes a through hole 82a formed in the second pressing piece 82, a cutter 83 formed in the first pressing piece 81, and a first pressing piece 81. It is further provided with an air cylinder (84) mounted on the back side and cutting the middle of the joint portion of the packaging bag (31a) by moving the cutter 83 back and forth with respect to the through hole (82a) during expansion and contraction operation by supplying compressed air.

In the figure, 90 is a seawater supply pipe for supplying seawater to the port 12 of the first hopper 11, 100 is a seawater supply pipe for supplying seawater to the second hopper 20 into which a predetermined amount of clam is fed, and 110 is a first 1 Hopper 11 is a blade that keeps a certain amount by sweeping the clam filled to overflow the port 12 during rotation.

On the other hand, the present invention has been described as an example of packing the clam clam and seawater, of course, can be alive aquatic products, such as clam clam, sea urchin, sea cucumber.

Hereinafter, the operation of the automatic clam packing machine according to the present invention will be described with reference to the accompanying drawings.

Wash clam shells (which can be applied to live marine products such as sea squirts and sea cucumbers) collected from the mountain area with water to wash off any dirt or soil on the clam's surface. Drain the back completely and finally rinse the clam with water.

As shown in Fig. 2 and 7, the washed clam is supplied to the first hopper 11 described above. Since the clam supplied to the first hopper 11 passes through the upper surface of the first hopper 11 by the blade 110 when the first hopper 11 rotates, it is mounted circumferentially on the bottom surface of the first hopper 11. A predetermined amount is accommodated in the port 12.

Since the opening and closing plate 13 installed to open and close the bottom surface of the port 12 when the port 12 moves to the designated position by the rotation of the first hopper 11 described above rotates and opens downward by the rocker 14, A certain amount of clams received in the port 12 is discharged to the chute 15 installed in the belt conveyor 16 (shown in FIG. 7).

At this time, since the seawater is supplied through the seawater supply pipe 90 installed at one side of the first hopper 11, the freshness of the clam is maintained, and the clam is prevented from sticking to the opening and closing plate 13.

After the clam is discharged from the port 12 by the opening / closing plate 13, and the port 12 is out of the designated position by the rotation of the first hopper 11, the opening / closing plate ( 13) to the initial position to close the bottom of the port (12).

As shown in Fig. 1 and 2, the clam which is accommodated in the chute 15 by a predetermined amount is discharged to the above-described second hopper 20 along the belt conveyor 16. At the same time, a predetermined amount of seawater is supplied through the seawater supply pipe 100 installed at one side of the second hopper 20.

The film-type wrapping paper 31 wound on the roll 32 of the wrapping paper supply means 30 passes through the plurality of rotating rollers 33 installed in order to maintain tension, and then the second hopper 20 described above. It is supplied to the discharge port 22 extended by maintaining a predetermined length below.

At this time, the film-shaped wrapping paper 31 is deformed into a cylindrical bag shape when passing through the expansion piece 40 formed outside the discharge port 22 described above.

8 and 9, the transfer belt 60 (timing belt is provided to the endless orbital movement in the vertical direction by the drive roller 60a and the driven roller 60b on the left and right sides of the discharge port 22 described above. Used) and the roller 61 is formed in the vertical direction on the outer surface of the discharge port 22 and pulled toward the bottom to maintain a predetermined tension.

The center surface of the packaging bag formed by the above-mentioned extension piece 40 is attached to the side of the conveyance belt 60 mentioned above by heat fusion of the heater 51 which maintains high temperature. Thus, the top and bottom open packaging bags are completed.

Therefore, the predetermined amount of clam discharged from the above-mentioned second hopper 20 and the seawater supplied by the seawater supply pipe 100 are introduced into the packaging bag 31a through the discharge port 22 (the sealing means 70 at this time). ), The lower end of the packaging bag is bonded in advance).

As shown in Figures 3 to 6, it will be described by bonding the opening of the packaging bag in which a certain amount of the clam and the sea water is introduced by the sealing means 70 by heat fusion.

When the packing bag 31a into which the clam and the sea water are introduced is moved between the first and second heaters 71 and 75 described above, compressed air is supplied to the small chamber of the air cylinder 74 from the aforementioned air supply source and contracted. As driven, the first moving bar 76 connected to the cylinder rod 74a is moved in the left direction in the drawing.

At this time, the first heater 71 installed at the end of the first moving bar 76 is moved in the left direction in the drawing, and the first crank 77 fixed to the first moving bar 76 described above is the first gear. As it rotates counterclockwise about the rotating shaft 72a of 72, the 1st gear 72 also rotates counterclockwise on drawing.

At this time, the second gear 73 meshed with the first gear 72 described above is rotated in the clockwise direction.

At the same time, as the second crank 78 fixed to the rotation shaft 73a of the second gear 73 is rotated clockwise about the rotation shaft 73a, the second movement bar ( 79) is moved to the right in the drawing.

Therefore, due to the compression of the first heater 71 fixed to the first moving bar 76 and the second heater 75 fixed to the second moving bar 79, the opening of the packaging bag 31a is heat-sealed. Due to splicing (shown in phantom in FIG. 6).

On the other hand, it will be described that the cutting means 80 to cut the middle of the junction of the packaging bag 31a, the opening of which is joined by the sealing means 70 described above.

As shown in FIGS. 3 to 6, when the above-described air cylinder 74 for cutting means 80 is driven, the first moving bar 76 fixed to the rod 74a is moved to the left in the drawing. In addition, the second moving bar 79 connected to the second crank 78 fixed to the second gear 73 meshed with the first gear 72 is moved in the right direction in the drawing.

Therefore, the middle of the junction of the packaging bag 31a is compressed by the first pressing piece 81 fixed to the first moving bar 76 and the second pressing piece 82 fixed to the second moving bar 79. Afterwards, the through-hole formed in the second pressing piece 82 by the cutter 83 fixed to the cylinder rod advancing in the left direction due to the driving of the air cylinder 84 mounted on the rear surface of the first moving bar 76. It is moved to 82a.

Thus, it is possible to cut the middle of the junction of the packaging bag (shown in phantom in Figure 6).

At this time, when both sides of the packaging bag 31a are mutually compressed by the first and second pressing pieces 81 and 82 described above, the first and second pressing pieces 81 and 82 are formed of metal and joined together. Of course, the remaining heat is cooled at room temperature.

As described above, the operation of joining the opening of the packaging bag (31a) in which a predetermined amount of clam and sea water by heat fusion by the first and second heaters (71, 75) to maintain the high temperature of the sealing means (70); By separating the operation of cutting the junction of the sealing bag 31a, the opening of which is sealed with the cutter 83 of the cutting means 80, the first and second heaters 71 and 75 Sea water is vaporized when cutting the middle of the joint by the high temperature heat remaining during the joining of the opening of 31a), thereby preventing the first and second heaters 71 and 75 from being buried.

Therefore, even when the openings of the packaging bags 31a into which the sea water is injected are joined by the first and second heaters 71 and 75 by heat fusion, the joints can be prevented from being completely sealed due to salt. do.

As described above, the automatic clam packing machine according to the present invention has the following advantages.

In the case of automatic packaging of live seafood such as clams, the sealing and cutting operations of wrapping paper that accommodates a certain amount of seawater and clams clam are separated and separated, thereby preventing salt from getting on the heater and preventing sealing parts from being treated poorly. can do.

In addition, by minimizing the parts constituting the drive portion for sealing and cutting the wrapping paper and seawater to accommodate the clam and the sea water to reduce the cost cost and manufacturing cost, it is possible to reduce the after-sales maintenance cost by preventing the operation smoothly.

In addition, by preventing the poor treatment of the sealing portion for bonding the wrapping paper by high temperature heat fusion, it prevents sea water leakage through the bonding portion to maintain the freshness of the clam during the distribution period can contribute to the improvement of the health of consumers. .

In addition, it is possible to mass-produce the clam shells automatically and continuously, thereby improving workability, thereby significantly reducing labor cost and cost, and thus having price competitiveness.

Claims (5)

A clam supply means for periodically moving a clam accommodated by a predetermined amount in a plurality of ports of which a bottom surface is openable from a first hopper accommodating the washed clam; A second hopper through which a predetermined amount of clam and sea water are supplied from the clam supply means; Wrapping paper supply means for continuously supplying a wrapping paper wrapped in a roll to a discharge port of the second hopper while maintaining tension; An extension piece installed outside the discharge port of the second hopper and configured to deform the wrapping paper supplied from the roll into a packaging bag; A packing bag molding part installed below the discharge port of the second hopper and bonding the central surface of the packing bag formed by the extension piece to be thermally fused by a pair of heaters; A pair of transfer belts installed to face the packing bag forming part and moving the packing bags downward by closely supporting the packing bags with respect to the outlet of the second hopper; Sealing means for joining the opening of the packing bag into which the clam discharged from the second hopper and the sea water are introduced by heat fusion by a pair of heaters which are moved back and forth by a driving means; And It is installed downward spaced apart from the sealing means, and the cutting means for cutting the middle of the joint portion by the cutter after the pressing by a pair of pressing pieces forward and backward by the driving means of the packing bag Automatic packing machine. The method according to claim 1, The clam supply means; A port installed in the circumferential direction on the rotatable first hopper bottom and having an upper and lower end open; An opening and closing plate rotatably installed at the bottom of the first hopper to open and close the bottom of the port; When the port containing a certain amount of clam is moved to a predetermined position by the rotation of the first hopper, the opening and closing plate is lowered and opened when the port is discharged, and when the port which discharged the clam is out of the predetermined position by the rotation of the first hopper, the opening and closing plate is lifted up. A locker for closing the bottom of the pot; And And a belt conveyor for continuously supplying the clam to the second hopper by a predetermined amount by a plurality of chutes for accommodating the clam discharged from the port. The method of claim 1, wherein the driving means; A pair of first and second gears meshed with each other to rotate in opposite directions; An air cylinder connected to an air supply source and expanded and driven when supplying compressed air; A first moving bar having one end connected to a rod of the air cylinder, and a sealing first heater or cutting first pressing piece fixed at the other end, and moving forward and backward during expansion and contraction of the air cylinder; A first crank having one end fixed to the first moving bar and the other end fixed to the rotation shaft of the first gear, and the first gear rotating the first gear when the air cylinder is stretched and driven; And A second crank having one end fixed to a rotation shaft of the second gear and converting the rotational movement of the second gear into a linear movement during expansion and contraction of the air cylinder; And One end is fixed to the other end of the second crank, and a sealing second heater or cutting second pressing piece is fixed to the other end, and the second heater or second pressing piece is moved to the first heater or the first when the air cylinder is stretched and driven. A clamshell automatic packaging machine, characterized in that it comprises a second moving bar for advancing back and forth with respect to the pressing piece. The method of claim 1 or 3, wherein the cutting means; The through-hole formed in the second pressing piece, the cutter formed in the first pressing piece, and attached to the back surface of the first pressing piece, the expansion and contraction of the cutter with respect to the through-hole when the expansion and contraction of the joint portion of the packaging bag The clamshell automatic packaging machine comprising an air cylinder for cutting the middle. The clamshell automatic packaging machine according to claim 1, wherein a rotatable roller is provided in layers in an up and down direction on an outer surface of the discharge port facing the transfer belt so as to increase the pulling force for pulling the wrapping paper.