Blow molding apparatus for disposable tableware production and method of manufacture

Abstract

The application provides a blow molding device and manufacturing method for disposable tableware production, and relates to the field of disposable tableware production equipment. The blow molding device for disposable tableware production comprises a cooling box, a mold one is arranged at the rear side of the cooling box, a mold two is arranged at the side, away from the cooling box, of the mold one, and a plug hole is arranged at the top of the mold two. The blow molding device for disposable tableware production sets up the mold one and the mold two to form a blow molding box, carries the parison into the blow molding box through the blow molding pipe, injects air into the parison through the air inlet channel, and makes the parison expand and swell to achieve the blow molding effect. The air is recycled through the cooperation of the cooling box, the temperature guide pipe, the T-shaped hole and the semicircular sphere, and the cooling and demolding effects are achieved. The energy recycling effect is achieved, and the energy loss is reduced. The parison after blow molding is cut through the concave type, the traditional manual cutting is replaced, and the tableware box body and the cover body are made at one time, and the work efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of disposable tableware production equipment, in particular to a blow molding device for disposable tableware production and a manufacturing method. BACKGROUND

[0002] With the development of economy and social progress, people's life rhythm is accelerating, in order to improve the convenience of daily life, disposable tableware also emerged as the times require, the traditional disposable tableware mostly uses polystyrene as raw material, although it brings convenience to people's life, but the degradation is difficult, a large number of disposable tableware discarded brings great burden to the natural environment.

[0003] With the emphasis on the environment, the market also correspondingly puts forward degradable materials to prepare disposable tableware, the raw materials of the existing degradable disposable tableware are mostly polylactic acid (PLA), starch, plant fiber or PBAT and other materials.

[0004] In the process of tableware production, blow molding machine is needed. After the product is hot blown, cooling and demolding are needed. At present, the cooling mechanism of most blow molding machines adopts air pump for cooling. Because the blown cold air cannot be recycled, it leads to waste of resources and causes a large amount of energy loss.

[0005] Secondly, the formed box will have mold corners, in order to solve the corner problem, artificial cutting is needed to form a complete box, which not only wastes labor, but also affects the overall production efficiency of the box. Therefore, we propose a disposable box blow molding and edge cutting device to solve the above problems. SUMMARY

[0006] (I) Technical problems solved

[0007] In view of the defects of the prior art, the present application provides a blow molding device for disposable tableware production and a manufacturing method, which solves the problems raised in the background art.

[0008] (II) Technical scheme

[0009] In order to achieve the above purpose, the present application is realized by the following technical scheme: a blow molding device for disposable tableware production, comprising a cooling box, the cooling box is provided with a mold one at the rear side, the mold one is provided with a mold two away from the cooling box side, the mold two is provided with a insertion hole at the top, the mold one and the mold two are spliced to form a blow molding box, the mold two is provided with a blow molding pipe above, the blow molding pipe is provided with a thermoplastic parison, the blow molding pipe extends into the blow molding box, the blow molding pipe is provided with a recovery pipe and an air inlet pipe at the top, the recovery pipe is connected with the cooling box.

[0010] The blow molding pipe is internally provided with an air inlet channel and an air outlet channel, the recovery pipe is connected to the air inlet channel, the air inlet pipe is connected to the air outlet channel, the cooling box rear end is connected to a temperature guide pipe, the temperature guide pipe penetrates the mold one and the mold two, and the mold one is provided with an adsorption module on the side facing the mold two.

[0011] Preferably, the temperature guide pipe rod body is provided with a bulge part between the mold one and the mold two, a T-shaped hole is internally provided in the bulge part, one end of the T-shaped hole longitudinal part is in contact with the mold one, the other end of the T-shaped hole longitudinal part is in contact with the mold two, the T-shaped hole transverse part is in communication with the temperature guide pipe, a semi-circular ball body driven by a motor is internally provided in the temperature guide pipe, when the semi-circular ball body is parallel to the T-shaped hole longitudinal part, the semi-circular ball body blocks the T-shaped hole transverse part, and when the semi-circular ball body is rotated by 90° and parallel to the T-shaped hole transverse part, the semi-circular ball body blocks the temperature guide pipe and the T-shaped hole is unblocked.

[0012] Preferably, the mold two is internally provided with a groove, a small electric push rod is internally provided on the inner wall of the groove, a concave knife is internally provided on the movable end of the small electric push rod, the concave knife is in a concave shape, one side of the concave knife can be attached to the mold one, and the sharp end of the concave knife can be extended out of the mold two.

[0013] Preferably, a first toggle is hingedly connected in the air inlet channel, a second toggle is hingedly connected in the air outlet channel, the movable end of the first toggle is inclined downward, the movable end of the second toggle is inclined upward, a baffle is internally provided in the air outlet channel and above the second toggle, one end of the baffle extends to the outside of the blow molding pipe, and a middle electric push rod is connected to the top of the blow molding pipe.

[0014] Preferably, a placement hole is internally provided in the center of the mold one, a matching bottom disc is internally provided in the placement hole, a motor is connected to the rear side of the cooling box, a large electric push rod is connected to the transmission shaft of the motor, the movable end of the large electric push rod is connected to the bottom disc, a gas pump is connected to the rod body of the large electric push rod, a connecting pipe is connected to the working end of the gas pump, a gas hole is internally provided in the bottom disc, and the connecting pipe is connected to the gas hole.

[0015] Preferably, the mold one and the mold two are both internally provided with a through hole, the temperature guide pipe penetrates the mold one and the mold two through the through hole, and a recess matching the bulge part is internally provided on the inner wall of the through hole.

[0016] A blow molding method for producing disposable tableware:

[0017] Step one: placing the mold two, making the temperature guide pipe penetrate the mold two, and then moving the mold one and the mold two to make the mold one and the mold two tightly attached together, and the mold one and the mold two wrapping the bulge part of the temperature guide pipe.

[0018] Step two: starting the adsorption module, using the adsorption module to make the mold one and the mold two tightly attached together to form a blow molding box, and controlling the large electric push rod to retract to make the bottom disc match the placement hole.

[0019] Step three, after mold one and mold two are assembled into a blow molding box, the heated thermoplastic parison is added to the blow molding tube, the middle electric push rod is elongated to drive the blow molding tube to descend, the blow molding tube carrying the parison penetrates the insertion hole and enters the blow molding box.

[0020] Step four, the partition is moved to the exhaust passage, the partition blocks the exhaust passage, air is guided into the blow molding tube along the air inlet pipe, air enters the parison along the air inlet passage, so that the parison is inflated and contacts the inner wall of the blow molding box.

[0021] Step five, after step four, the partition is moved outward to make the exhaust passage unobstructed, the parison no longer continues to expand, air enters the cooling box through the exhaust passage and the recovery pipe, the recovery pipe cools the air to form cold air, the cold air is discharged along the temperature guide pipe, and the surface temperature of mold one and mold two is reduced by the heat transfer effect, thereby cooling the blow molded parison.

[0022] Step six, after the parison is cooled, the air pump is started to suck air, the bottom plate adsorbs the parison, the small electric push rod is elongated to make the concave knife extend out of mold two, the concave knife pierces the parison, the motor drives the large electric push rod to rotate, and the concave knife performs ring cutting on the parison, so that the parison is separated into a tableware box body and a tableware cover body.

[0023] Step seven, the middle electric push rod is retracted to pull out the blow molding tube from the blow molding box, the adsorption module is closed, the semicircular sphere is rotated by 90°, the semicircular sphere blocks the temperature guide pipe, and the cold air is sprayed from the T-shaped hole, so that mold one and mold two are far away from each other.

[0024] (Three) beneficial effects

[0025] The application provides a blow molding device and manufacturing method for disposable tableware production. The application has the following beneficial effects:

[0026] 1. The blow molding device for disposable tableware production is provided with mold one and mold two to form a blow molding box, the blow molding tube carrying the parison is placed in the blow molding box, the air inlet passage injects air into the parison, the parison is inflated, and the blow molding effect is achieved. The cooling box, the temperature guide pipe, the T-shaped hole and the semicircular sphere are matched to recycle the air, achieve the effects of cooling and demolding, recycle the energy, and reduce the energy loss. The concave knife cuts the blow molded parison, replaces the traditional manual cutting, and one-time produces the tableware box body and cover body, thereby further improving the work efficiency. DRAWINGS

[0027] Figure 1 It is a structure perspective view of the application;

[0028] Figure 2 It is a structure schematic view of mold one of the application;

[0029] Figure 3 This is a structural schematic diagram of the mold 2 of the present invention;

[0030] Figure 4 Schematic diagram of the parison structure of the present invention;

[0031] Figure 5 This is a diagram showing the structural state of the thermal conductive pipe of the present invention;

[0032] Figure 6 This is a diagram showing the second structural state of the thermal conductive pipe of the present invention;

[0033] Figure 7 It is a partial structural cross-sectional view of the present invention;

[0034] Figure 8 Schematic diagram of the internal structure of the blow molding tube of the present invention;

[0035] Figure 9 This is a schematic diagram of the concave knife structure of the present invention;

[0036] Figure 10 It is a schematic diagram of the chassis structure of the present invention.

[0037] In the figure: 1 cooling box, 11 large electric push rod, 12 air pump, 121 connecting pipe, 2 mold 1, 21 placement hole, 22 adsorption module, 3 mold 2, 31 jack, 32 groove, 33 concave knife, 34 small electric push rod, 4 blow molding tube, 41 air intake channel, 42 exhaust channel, 43 paddle 1, 44 paddle 2, 45 partition, 46 medium electric push rod, 5 parison, 6 through hole, 61 depression, 7 temperature conducting tube, 71 ridge, 72 T-hole, 73 semi-sphere, 8 chassis, 81 air hole, 9 recovery pipe, 10 air intake pipe. DETAILED DESCRIPTION

[0038] The embodiment of the present invention provides a blow molding device for producing disposable tableware, such as Figures 1-10 As shown, it includes a cooling box 1, with mold 1 2 mounted on the rear side of the cooling box 1. Mold 2 3 is mounted on the side of mold 1 2 away from the cooling box 1. Mold 2 3 has a socket 31 at the top. Mold 1 2 and mold 2 3 can be spliced ​​together to form a blow molding box. A blow molding tube 4 is mounted above mold 2 3. A thermoplastic parison 5 is sheathed on the blow molding tube 4 and extends into the blow molding box. A recovery tube 9 and an air inlet pipe 10 are fixedly mounted on the top of the blow molding tube 4. The recovery tube 9 is welded to the cooling box 1.

[0039] Blowing tube 4 is provided with an air inlet channel 41 and an exhaust channel 42. Recovery tube 9 is connected to air inlet channel 41, and air inlet tube 10 is connected to exhaust channel 42. A heat conducting tube 7 is welded to the rear end of cooling box 1 and passes through mold 1 2 and mold 2 3. Adsorption module 22 is fixedly mounted on the side of mold 1 2 facing mold 2 3.

[0040] Combined with attachment Figure 5 、6 The heat conducting tube 7 has a raised portion 71 on its shaft, and the tube 7 and raised portion 71 are integrally formed. Raised portion 71 is located between mold 1 2 and mold 2 3 . A T-shaped hole 72 is defined within raised portion 71. One longitudinal end of T-shaped hole 72 contacts mold 1 2 , while the other longitudinal end of T-shaped hole 72 contacts mold 2 3 . The transverse portion of T-shaped hole 72 communicates with the interior of heat conducting tube 7 . A motor-driven semi-circular sphere 73 is fixedly mounted within heat conducting tube 7 .

[0041] In working state 1, when the semi-sphere 73 is parallel to the longitudinal portion of the T-shaped hole 72, the semi-sphere 73 blocks the transverse portion of the T-shaped hole 72. The air flow is discharged along the heat conducting tube 7.

[0042] In the second working state, when the hemispherical body 73 rotates 90 degrees and becomes parallel to the transverse portion of the T-shaped hole 72, the hemispherical body 73 blocks the heat conducting tube 7, while the T-shaped hole 72 remains unobstructed, allowing air to escape from the T-shaped hole 72. This airflow can push Mold 1 2 and Mold 2 3 away from each other, achieving a separation effect.

[0043] The mold 2 3 is provided with a groove 32, the inner wall of the groove 32 is welded with a small electric push rod 34, and the movable end of the small electric push rod 34 is fixedly installed with a concave knife 33. The concave knife 33 is concave in shape, and is combined with the attached Figure 3 、 7 It can be seen that when mold 1 2 and mold 2 3 are fitted together, one side of the concave knife 33 can fit with mold 1 2.

[0044] When the small electric push rod 34 extends to push the concave knife 33 to move, the sharp end of the concave knife 33 can extend from the mold 2 3. The sharp end of the concave knife 33 can pierce the blow-molded parison 5.

[0045] Combined with the Figure 4 , the shadow area of ​​the parison 5 in the accompanying drawings represents the cutout portion. After the shadow area of ​​the blade is removed by the concave cutter 33, the parison 5 is divided into two, one part serving as the cutlery box body and the other part serving as the cutlery box cover.

[0046] A paddle 1 43 is hinged in the air intake channel 41, and a paddle 2 44 is hinged in the air exhaust channel 42. The movable end of the paddle 1 43 is tilted downward, and the movable end of the paddle 2 44 is tilted upward. A partition 45 is slidably fitted in the exhaust channel 42 and above the paddle 2 44. One end of the partition 45 extends to the outside of the blow molding tube 4, and a medium-power push rod 46 is fixedly installed on the top of the blow molding tube 4.

[0047] The electric push rod 46 is welded to the frame to suspend the blow molding tube 4. The first paddle 43 and the second paddle 44 cooperate to make the air inlet channel 41 and the exhaust channel 42 become one-way channels.

[0048] The exhaust passage 42 is blocked by the partition 45, so that the air stays in the parison 5, and the parison 5 gradually bulges as the gas is continuously injected.

[0049] The air inlet pipe 10 is in communication with a gas conveying mechanism, and the gas conveying mechanism is provided with a gas flow meter. The amount of gas injected into the parison 5 is observed according to the gas flow meter, so that the worker determines whether the parison 5 is blown to completion according to the amount of gas injection. Since this is a conventional technical means, the specific structure, connection mode and the like are not described in detail.

[0050] When the parison 5 is blown to completion, the partition 45 is opened, and the subsequent air is transported into the cooling box 1 through the exhaust passage 42.

[0051] A placement hole 21 is formed in the center of the mold 2, and a matching bottom disc 8 is placed in the placement hole 21. A motor is fixedly installed at the rear side of the cooling box 1, a large electric push rod 11 is welded to the transmission shaft of the motor, and the movable end of the large electric push rod 11 is welded to the bottom disc 8. The rod body of the large electric push rod 11 is fixedly installed with a gas pump 12, the working end of the gas pump 12 is fixedly installed with a connecting pipe 121, the bottom disc 8 is provided with a gas hole 81, and the connecting pipe 121 is in opposite connection with the gas hole 81.

[0052] The parison 5 blown to completion is adsorbed by the bottom disc 8 through air pumping by the gas pump 12. The cold air is sprayed out through the T-shaped hole 72, and the mold 2 and the mold 3 move away from each other. Since the mold 2 moves towards the cooling box 1, the mold 2 is separated from the tableware box body adsorbed by the bottom disc 8.

[0053] The mold 2 and the mold 3 are both provided with through holes 6, the temperature guide pipe 7 passes through the mold 2 and the mold 3 through the through holes 6, and the inner wall of the through hole 6 is provided with a recess 61 matched with the raised portion 71.

[0054] The above-mentioned adsorption module 22 and the cooling box 1 are conventional technical means, and the present scheme does not make any innovation to them. Therefore, the specific structure, circuit arrangement, connection mode and the like are the same as the prior art, and will not be described in detail.

[0055] A blow molding method for producing disposable tableware:

[0056] Step one, place the mold 3, so that the temperature guide pipe 7 passes through the mold 3, then move the mold 2 and the mold 3, so that the mold 2 and the mold 3 are tightly attached together, and the mold 2 and the mold 3 wrap the raised portion 71 of the temperature guide pipe 7.

[0057] Step two, start the adsorption module 22, use the adsorption module 22 to make the mold 2 and the mold 3 tightly attached to each other to form a blow molding box, and control the large electric push rod 11 to retract so that the bottom disc 8 is matched with the placement hole 21.

[0058] Step three, after the mold one 2 and the mold two 3 are assembled into the blow molding box, the heated thermoplastic parison 5 is put on the blow molding tube 4, the middle electric push rod 46 is extended to drive the blow molding tube 4 to descend, the blow molding tube 4 carrying the parison 5 penetrates the insertion hole 31 and extends into the blow molding box.

[0059] Step four, the partition plate 45 is moved to the exhaust passage 42, the partition plate 45 blocks the exhaust passage 42, the air is guided into the blow molding tube 4 along the air inlet tube 10, the air enters the parison 5 along the air inlet passage 41, so that the parison 5 is inflated and contacts the inner wall of the blow molding box.

[0060] Step five, after step four, the partition plate 45 is moved outward to make the exhaust passage 42 unblocked, the parison 5 no longer continues to expand, the air enters the cooling box 1 through the exhaust passage 42 and the recovery tube 9, the recovery tube 9 cools the air to form cold air, the cold air is discharged along the temperature guide tube 7, and the surface temperature of the mold one 2 and the mold two 3 is reduced by the heat transfer effect, so that the parison 5 is cooled.

[0061] Step six, after the parison 5 is cooled, the air pump 12 is started to suck air, the bottom plate 8 adsorbs the parison 5, the small electric push rod 34 is controlled to be extended, the concave knife 33 is extended from the mold two 3, the concave knife 33 pierces the parison 5, the motor drives the large electric push rod 11 to rotate, the concave knife 33 performs ring cutting on the parison 5, so that the parison 5 is separated into a tableware box body and a tableware cover body.

[0062] Step seven, the middle electric push rod 46 is controlled to be retracted to pull out the blow molding tube 4 from the blow molding box, the adsorption module is closed, the semicircular sphere 73 is controlled to be rotated by 90°, the semicircular sphere 73 blocks the temperature guide tube 7, the cold air is sprayed from the T-shaped hole 72, so that the mold one 2 and the mold two 3 are far away from each other. The worker removes the mold two 3 to take out the tableware cover body, and controls the large electric push rod 11 to be extended to drive the bottom plate to move, so that the tableware box body is separated from the mold one 2.

[0063] As described above, the blow molding device for producing disposable tableware is provided with the mold one 2 and the mold two 3 to form a blow molding box, the blow molding tube 4 carrying the parison 5 is put into the blow molding box, the air inlet passage 41 injects air into the parison 5, so that the parison 5 is inflated and reaches the blow molding effect. The cooling box 1, the temperature guide tube 7, the T-shaped hole 72 and the semicircular sphere 73 cooperate to reuse the air, achieve the effects of cooling and demolding, and play a role in recycling energy and reducing energy consumption. The concave knife 33 cuts the blow molded parison 5, instead of traditional manual cutting, and one-time production of tableware box body and cover body further improves work efficiency.

[0064] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A blow molding device for the production of disposable tableware, comprising a cooling box (1), characterized in that: The rear side of the cooling box (1) is provided with a mold one (2), the far side of the mold one (2) from the cooling box (1) is provided with a mold two (3), the top of the mold two (3) is provided with a insertion hole (31), the mold one (2) and the mold two (3) are spliced to form a blow molding box, the top of the mold two (3) is provided with a blow molding pipe (4), the blow molding pipe (4) is provided with a thermoplastic parison (5), the blow molding pipe (4) extends into the blow molding box, the top of the blow molding pipe (4) is connected with a recovery pipe (9) and an air inlet pipe (10), the recovery pipe (9) is connected with the cooling box (1); The blow molding pipe (4) is provided with an air inlet channel (41) and an exhaust channel (42), the recovery pipe (9) is connected with the air inlet channel (41), and the air inlet pipe (10) is connected with the exhaust channel (42), the rear end of the cooling box (1) is connected with a temperature guide pipe (7), the temperature guide pipe (7) penetrates the mold one (2) and the mold two (3), and the side of the mold one (2) facing the mold two (3) is provided with an adsorption module (22); The rod body of the temperature guide pipe (7) is provided with a bulge (71), the bulge (71) is located between the mold one (2) and the mold two (3), the bulge (71) is provided with a T-shaped hole (72), one end of the longitudinal part of the T-shaped hole (72) is in contact with the mold one (2), the other end of the longitudinal part of the T-shaped hole (72) is in contact with the mold two (3), the transverse part of the T-shaped hole (72) is in communication with the temperature guide pipe (7), and the temperature guide pipe (7) is provided with a semicircle ball (73) driven by a motor, when the semicircle ball (73) is parallel to the longitudinal part of the T-shaped hole (72), the semicircle ball (73) blocks the transverse part of the T-shaped hole (72), and when the semicircle ball (73) is rotated by 90° and parallel to the transverse part of the T-shaped hole (72), the semicircle ball (73) blocks the temperature guide pipe (7) and the T-shaped hole (72) is unobstructed; The air inlet channel (41) is hinged with a first tab (43), the exhaust channel (42) is hinged with a second tab (44), the movable end of the first tab (43) is inclined downward, the movable end of the second tab (44) is inclined upward, the exhaust channel (42) is provided with a baffle (45) above the second tab (44), one end of the baffle (45) extends out of the blow molding pipe (4), and the top of the blow molding pipe (4) is connected with a middle electric push rod (46).

2. A blow molding apparatus for disposable tableware production according to claim 1, characterized in that: The mold two (3) is provided with a groove (32), the inner wall of the groove (32) is provided with a small electric push rod (34), the movable end of the small electric push rod (34) is provided with a concave knife (33), the concave knife (33) is in the shape of a concave character, one side of the concave knife (33) can be attached to the mold one (2), and the sharp end of the concave knife (33) can extend out of the mold two (3).

3. A blow molding apparatus for disposable tableware production according to claim 2, characterized in that: The mold one (2) is provided with a setting hole (21) at the center, the setting hole (21) is provided with a matching bottom disc (8), the rear side of the cooling box (1) is connected with a motor, the transmission shaft of the motor is connected with a large electric push rod (11), the movable end of the large electric push rod (11) is connected with the bottom disc (8), the rod body of the large electric push rod (11) is connected with an air pump (12), the working end of the air pump (12) is connected with a connecting pipe (121), the bottom disc (8) is provided with an air hole (81), and the connecting pipe (121) is connected with the air hole (81).

4. A blow molding apparatus for disposable tableware production according to claim 3, characterized in that: The mold one (2) and the mold two (3) are provided with through holes (6), the temperature guide pipe (7) passes through the mold one (2) and the mold two (3) through the through hole (6), and the inner wall of the through hole (6) is provided with a recess (61) matched with the raised portion (71).

5. The blow molding method of the blow molding device for disposable tableware production according to claim 4, characterized in that: Step one, the mold two (3) is placed, so that the temperature guide pipe (7) passes through the mold two (3), and then the mold one (2) and the mold two (3) are moved to make the mold one (2) and the mold two (3) tightly adhere to each other, and the mold one (2) and the mold two (3) wrap the raised portion (71) of the temperature guide pipe (7); Step two, the adsorption module (22) is started, the mold one (2) and the mold two (3) are tightly adhered to each other to form a blow molding box by the adsorption module (22), and the bottom disc (8) is matched with the placement hole (21) by controlling the contraction of the large electric push rod (11); Step three, after the mold one (2) and the mold two (3) are assembled into a blow molding box, a heated thermoplastic parison (5) is added to the blow molding pipe (4), the middle electric push rod (46) is elongated to drive the blow molding pipe (4) to descend, and the blow molding pipe (4) carrying the parison (5) passes through the insertion hole (31) and extends into the blow molding box; Step four, the partition plate (45) is moved into the exhaust passage (42), the partition plate (45) is blocked in the exhaust passage (42), air is introduced into the blow molding pipe (4) along the air inlet pipe (10), and the air enters the parison (5) along the air inlet passage (41), so that the parison (5) is inflated and contacts the inner wall of the blow molding box; Step five, after step four, the partition plate (45) is moved outward to make the exhaust passage (42) unobstructed, the parison (5) no longer continues to expand, and the air enters the cooling box (1) through the exhaust passage (42) and the recovery pipe (9), the recovery pipe (9) cools the air to form cold air, the cold air is discharged along the temperature guide pipe (7), and the surface temperature of the mold one (2) and the mold two (3) is reduced by means of heat transfer effect, so as to cool the blow molded parison (5); Step six, after the parison (5) is cooled, the air pump (12) is started to suck air, the bottom disc (8) adsorbs the parison (5), the small electric push rod (34) is elongated to make the concave knife (33) extend out of the mold two (3), the concave knife (33) pierces the parison (5), the motor drives the large electric push rod (11) to rotate, the concave knife (33) performs ring cutting on the parison (5), and the parison (5) is separated into a tableware box body and a tableware cover body; Step seven, the middle electric push rod (46) is controlled to contract to pull out the blow molding pipe (4) from the blow molding box, the adsorption module is closed, the semicircular sphere (73) is controlled to rotate by 90°, the semicircular sphere (73) is blocked in the temperature guide pipe (7), and the cold air is sprayed from the T-shaped hole (72), so that the mold one (2) and the mold two (3) are away from each other.

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