CN116728747A - Mould blank blow molding device for producing plastic cup and application method thereof - Google Patents

Abstract

The application discloses a mould embryo blow molding device for producing plastic cups, which belongs to the technical field of plastic cup production moulds, and the technical scheme is characterized by comprising the following steps: the upper die holder comprises a pressurizing cavity; the lower die holder comprises a die cavity and a negative pressure cavity, and the die cavity is communicated with the negative pressure cavity through micropores; the outer pressing ring is used for clamping the embryo; an inner pressing ring for clamping the embryo; a cutting assembly for severing the clamped embryo body, the cutting assembly comprising a cutting knife; the connecting component is used for connecting the cutting component and the inner pressing ring; the flanging mechanism is used for flanging the edge of the plastic cup; the cutting die comprises an outer pressing ring, an upper die holder, an inner pressing ring, a lower die holder, a cutting knife, a first spring, a second spring, an outer pressing groove, an inner cutting groove and an inner cutting groove, wherein the first spring is arranged between the outer pressing ring and the upper die holder, the second spring is arranged between the inner pressing ring and the upper die holder, the lower die holder is provided with the outer pressing groove matched with the outer pressing ring, and the lower die holder is provided with the inner cutting groove matched with the cutting knife. The application improves the production precision and the production quality of the plastic cup.

Description

Mould blank blow molding device for producing plastic cup and application method thereof

Technical Field

The application belongs to the technical field of plastic cup production dies, and particularly relates to a die blank blow molding device for producing plastic cups and a using method thereof.

Background

The disposable plastic cups and plastic bowls are often used in life, when the disposable plastic cups and plastic bowls are manufactured by stamping, and then are cut and blown out of the die, so that the assembly line processing can be realized, but along with the improvement of the living standard of people, the requirements on the shapes of the plastic cups and plastic bowls are higher and higher, for example, concave arc structures can be formed on the outer sides of the plastic cups and plastic bowls for preventing hands from sliding.

The prior art patent with publication number CN115447115A discloses a disposable plastic cup and plastic bowl forming die, which comprises a lower die and an upper die, wherein at least one die cavity is formed in the lower die, a bottom die with a plurality of micro-air holes is fixedly connected to the bottom of the die cavity, a cutting annular groove and an embedded groove which are coaxial are sequentially formed in the outer side of the die cavity in the top surface of the lower die, a sealing ring is fixedly arranged in the embedded groove, a cutting ring and a pressing ring groove which are matched with the annular groove and the embedded groove are formed in the lower bottom surface of the upper die, a pressing ring is elastically connected in the pressing ring groove, a negative pressure cavity is formed in the bottom of the lower die, and the negative pressure cavity is communicated with a negative pressure pipe.

The forming die can be used for quickly blowing the disposable plastic cup, but the annular pressing plate is fixedly connected with the cutting ring, and before the cutting ring cuts off the plastic blank body and presses the annular pressing plate, the gravity center of the blank body is easy to deform under the action of gravity, the edge is displaced, and finally the precision of the disposable plastic cup cannot meet the requirement.

Disclosure of Invention

The application aims at solving the technical problems and provides a mould blank blow molding device for producing plastic cups, which improves the production precision and the production quality of the plastic cups.

The application provides a mould blank blow molding device for producing plastic cups, which comprises the following components:

the upper die holder comprises a pressurizing cavity;

the lower die holder comprises a die cavity and a negative pressure cavity, and the die cavity is communicated with the negative pressure cavity through micropores;

the outer pressing ring is used for clamping the embryo;

an inner pressing ring for clamping the embryo;

a cutting assembly for severing the clamped embryo body, the cutting assembly comprising a cutting knife;

the connecting component is used for connecting the cutting component and the inner pressing ring;

the flanging mechanism is used for flanging the edge of the plastic cup;

the cutting die comprises an outer pressing ring, an upper die holder, an inner pressing ring, a lower die holder, a cutting knife, a first spring, a second spring, an outer pressing groove, an inner cutting groove and an inner cutting groove, wherein the first spring is arranged between the outer pressing ring and the upper die holder, the second spring is arranged between the inner pressing ring and the upper die holder, the lower die holder is provided with the outer pressing groove matched with the outer pressing ring, and the lower die holder is provided with the inner cutting groove matched with the cutting knife.

The upper die holder and the lower die holder are clamped to clamp the flaky blank, the clamping of the blank is realized through the outer pressing ring and the inner pressing ring, then the clamped blank is cut through the cutting assembly, the cutting blade is arranged between the outer pressing ring and the inner pressing ring and adjacent to the inner pressing ring, the cutting blade is connected with the inner pressing ring through the connecting assembly, the inner pressing ring and the cutting blade can move relative to each other, the edge of the plastic cup is downwards turned through the flanging mechanism, the outer pressing ring acts on through the first spring, the clamping degree of the outer pressing ring on the blank is improved, the outer pressing ring is matched with the outer pressing groove when being clamped, the inner pressing ring acts on the inner pressing ring through the second spring, the clamping degree of the inner pressing ring on the blank is improved, the cutting blade is matched with the inner cutting groove when being cut, the disposable plastic cup is molded in the die cavity of the lower die holder, the pressurizing cavity is inflated, the negative pressure cavity is pumped with air in the die cavity, the molding speed of the plastic cup is improved, the blank is fast molded and then clings to the die cavity, the accuracy of the plastic cup is improved, the pressurizing cavity is connected with the pressurizing air source, and the negative pressure cavity is connected with the negative pressure air source.

Further, the connection assembly includes:

the mounting seat is mounted on the upper die holder;

the gear is arranged on the mounting seat;

the first rack is arranged on the inner pressing ring;

the second rack is arranged on the cutting knife;

the reset component is arranged between the cutting knife and the inner pressing ring;

the driving assembly is used for driving the mounting seat to move;

wherein, both sides of gear are connected with first rack, second rack installation.

The mounting seat is arranged on the upper die holder, the gear is arranged on the mounting seat, when the upper die holder and the lower die holder are assembled, the inner pressing ring is contracted inwards towards the upper die holder, when the inner pressing ring moves, the first rack and the inner pressing ring are connected in a mounting manner and move simultaneously, the first rack drives the gear to rotate, then the gear drives the second rack to move, when the inner pressing ring moves inwards, the cutting knife moves outwards towards the upper die holder and acts on the blank to cut the blank, the reset component resets the relative position between the cutting knife and the inner pressing ring, and the driving component controls the mounting seat to move, so that the cutting knife continues to move outwards towards the upper die holder, and the flanging process for the edge of the plastic cup is completed.

Further, the reset assembly includes:

the reset seat is arranged on the cutting knife;

the push plate is arranged in the reset seat, and is provided with a connecting handle which extends from the inside of the reset seat to the outside of the reset seat and is connected with the first rack;

the third springs are arranged on two sides of the push plate and are propped against the reset seat;

wherein, reset seat be provided with the spout with the connecting handle adaptation.

The reset seat is arranged on the cutting knife, the push plate is arranged in the middle of the reset seat under the action of the third springs at the two sides when in a reset state, when the inner pressing ring and the cutting knife move mutually, the push plate moves simultaneously with the first rack connected through the connecting handle, so that the push plate moves in the reset seat, the third springs at the two sides are deformed, when the upper die holder and the lower die holder are opened, the inner pressing ring and the cutting knife are reset under the action of the second springs and the third springs, and the extension of the inner pressing ring is larger than that of the cutting knife after reset through the reset assembly, so that the blank is ensured to be firstly pressed by the inner pressing ring, and then the blank cutting is realized.

Further, the flanging mechanism:

the abutting seat is arranged in the inner cutting groove and corresponds to the cutting knife;

a fourth spring arranged between the abutting seat and the internal cutting groove;

the flanging block is arranged on the inner ring;

a pushing part arranged on the cutting knife;

the sliding shifting block is arranged on the flanging block;

limiting blocks hinged to two ends of the sliding shifting block;

the fifth spring is arranged between the limiting block and the sliding shifting block;

the flange block is provided with a sliding groove matched with the sliding shifting block, the sliding groove is provided with an arc groove, and the limiting block is matched with the sliding groove.

The abutting seat is arranged in the inner cutting groove, when the cutting knife is cut, the abutting seat is continuously extended outwards through the driving component to be abutted on the abutting seat, the abutting seat is contracted inwards towards the lower die seat, the flanging block is extended out of the inner annular ring through the movement of the cutting knife, the side wall of the plastic cup is flanged, the cutting knife acts on the limiting block through the pushing part, the limiting block and the sliding shifting block are moved, the flanging block is controlled to move, when the pushing part is arranged between the two limiting blocks, the flanging block and the cutting knife move simultaneously, when the limiting block moves to the arc-shaped groove, the position of the limiting block and the position of the sliding shifting block are locked through the fifth spring, the pushing part is separated from the limiting block and the sliding shifting block to finish flanging, when the cutting knife is contracted and reset, the pushing part acts on the other limiting block to release the locking state of the sliding shifting block and the limiting block, the flanging block is contracted and reset inwards through the pushing part until the limiting block which is propped against the pushing part is arranged in the arc-shaped groove to lock the movable shifting block and is separated from the pushing part, and the cutting knife is continuously contracted.

Further, the upper die holder includes:

the vent hole is connected with the pressurizing cavity;

the valve cavity is arranged on the upper die holder and is positioned at the middle end of the vent hole;

the valve body is arranged in the valve cavity;

the support seat is arranged in the valve cavity;

the first electromagnet is arranged on the bracket seat;

the second electromagnet is arranged on the valve body and is matched with the first electromagnet;

wherein, the valve body is movably arranged on the bracket seat.

The blank is formed by discharging gas in the pressurizing cavity through the vent hole, the high-pressure gas in the pressurizing cavity is controlled by the valve cavity and the valve body in a switching mode, the support seat is arranged in the valve cavity, the valve body moves when the first electromagnet and the second electromagnet interact, when the valve cavity and the valve body are opened, other discharging in the pressurizing cavity is achieved, and when the valve cavity and the valve body are closed, the pressurizing cavity and the valve cavity are disconnected.

Further, the driving assembly includes:

the driving cavity is connected with the valve cavity;

the piston is arranged in the driving cavity and is connected with the mounting seat;

and the sixth spring is arranged between the mounting seat and the upper die seat.

When the valve cavity is opened, the air pressure in the valve cavity rises and is communicated with the driving cavity, the air pressure in the driving cavity rises to push the piston to move, meanwhile, the mounting seat is made to move, the inner pressing ring is static at the moment, the gear moves in the gravity direction, the gear simultaneously rotates around the axis of the inner pressing ring through the first rack, the second rack moves the rod when the gear rotates, the cutting knife continuously extends outwards in the flanging process is realized, when the valve cavity and the valve body are closed, the upper die holder and the lower die holder are opened, the driving cavity is communicated with the atmosphere through the valve cavity, the piston and the mounting seat are reset under the action of the sixth spring, and the reset of the inner pressing ring and the cutting knife is ensured.

Further, the method further comprises the following steps:

the air jet head is arranged on the lower die holder and connected with the die cavity.

When the upper die holder and the lower die holder are opened, the plastic cup is blown out of the die cavity through the flanging position of the edge of the plastic cup under the action of the butt joint seat and the jet head, so that the demolding efficiency and stability of the plastic cup are improved, and the jet head is connected with a high-pressure air source.

The application also provides a using method of the mould blank blow molding device for producing the plastic cup, which comprises the following specific steps:

s1, a strip-shaped blank is moved between an upper die holder and a lower die holder, die assembly is carried out between the upper die holder and the lower die holder, the blank is clamped through an outer pressing ring and an inner pressing ring, and a cutting knife is enabled to cut the blank in the clamping process of the inner pressing ring;

s2, after the compaction is completed, the valve cavity is opened through the valve body, air in the pressurizing cavity is filled into the die cavity, meanwhile, the negative pressure cavity is used for exhausting air, so that the blank is tightly attached to the inner wall surface of the die cavity, the blowing of the plastic cup is completed, meanwhile, when the valve body is opened, high-pressure air in the pressurizing cavity enters into the driving cavity to push the piston and the mounting seat to move, the cutting knife is enabled to continuously move in the inward grooving, and the flanging block is pushed to move to flanging the edge of the plastic cup;

s3, after the plastic cup is molded, the upper die holder and the lower die holder are opened, the plastic cup in the die cavity is sprayed out through the air jet head, the blown plastic cup is blown out of the die range through a fan arranged on the side edge of the die, blanking is completed, and the blank is moved to continue the steps.

The outer pressing ring and the inner pressing ring are clamped firstly, the cutting knife is used for cutting, the position stability of blanks after cutting is improved, the accuracy of the plastic cup after molding is further improved, the edges are turned over in the plastic cup molding process, and the structural strength of the plastic cup is improved.

The beneficial effects of the application are as follows:

1. the clamping of the blank is realized through the outer pressing ring and the inner pressing ring, then the clamped blank is cut through the cutting assembly, the cutting knife is connected with the inner pressing ring through the connecting assembly, the inner pressing ring and the cutting knife can mutually move, the edge of the plastic cup is downwards turned through the turning mechanism, in the plastic cup forming process, the pressurizing cavity blows air, the negative pressure cavity pumps air in the die cavity through the micropores, the forming speed of the plastic cup is improved, the blank is rapidly formed and then clings to the die cavity, the precision of the molded plastic cup is improved,

2. when the upper die holder and the lower die holder are matched, the inner pressing ring is contracted inwards, the first rack is connected with the inner pressing ring in a mounting manner and moves simultaneously when the inner pressing ring moves, the first rack drives the gear to rotate, then the gear drives the second rack to move, and when the inner pressing ring moves in the die holder, the cutting knife moves outwards to the upper die holder and acts on the blank to cut the blank.

3. When the upper die holder and the lower die holder are opened, the inner pressing ring and the cutting knife are reset under the action of the second spring and the third spring.

4. The cutting knife is acted on the limiting blocks through the pushing parts, the limiting blocks and the sliding shifting blocks are moved, the flanging blocks are controlled to move, when the pushing parts are arranged between the two limiting blocks, the flanging blocks and the cutting knife move simultaneously, when the limiting blocks move to the arc-shaped grooves, the positions of the limiting blocks and the sliding shifting blocks are locked through the fifth springs, the pushing parts are separated from the limiting blocks and the sliding shifting blocks, flanging is completed, when the cutting knife contracts and resets, the pushing parts act on the other limiting blocks to release the locking state of the sliding shifting blocks and the limiting blocks, the flanging blocks contract and reset inwards through the pushing parts until the limiting blocks which are propped against the pushing parts are arranged in the arc-shaped grooves to lock the movable shifting blocks, and are separated from the pushing parts, and the cutting knife contracts continuously.

Drawings

FIG. 1 is a schematic view of a blow molding apparatus according to the present application;

FIG. 2 is a schematic view of a lower die holder according to the present application;

FIG. 3 is a schematic view of the upper die holder of the present application;

FIG. 4 is a schematic diagram of a reset assembly according to the present application;

FIG. 5 is an enlarged view of the application at A of FIG. 3;

FIG. 6 is an enlarged view of the application at B of FIG. 3;

FIG. 7 is an enlarged view of FIG. 3C of the present application;

reference numeral, 100, upper die holder in the figure; 110. a pressurizing chamber; 120. a vent hole; 130. a valve cavity; 140. a valve body; 150. a support seat; 160. a first electromagnet; 170. a second electromagnet; 200. a lower die holder; 210. a mold cavity; 220. a negative pressure chamber; 230. micropores; 240. an external pressing groove; 250. an inner slot; 300. an outer pressing ring; 310. a first spring; 400. an inner pressing ring; 410. a second spring; 510. a cutting knife; 600. a connection assembly; 610. a mounting base; 620. a gear; 630. a first rack; 640. a second rack; 650. a reset assembly; 651. a reset seat; 652. a push plate; 653. a connecting handle; 654. a third spring; 655. a chute; 660. a drive assembly; 661. a drive chamber; 662. a piston; 663. a sixth spring; 700. a flanging mechanism; 710. a butt joint seat; 720. a fourth spring; 730. a flanging block; 740. a pushing part; 750. sliding the shifting block; 760. a limiting block; 770. a fifth spring; 780. a sliding groove; 790. an arc-shaped groove; 800. a jet head.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The following provides a detailed description of embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, 2 and 3, an embodiment of the present application provides a mold blank blow molding apparatus for producing a plastic cup, including:

an upper die holder 100 including a plenum 110;

the lower die holder 200 comprises a die cavity 210 and a negative pressure cavity 220, wherein the die cavity 210 is communicated with the negative pressure cavity 220 through a micropore 230;

an outer pressing ring 300 for clamping the embryo;

an inner pressing ring 400 for clamping the embryo;

a cutting assembly for severing the clamped embryo body, the cutting assembly comprising a cutting knife 510;

a connection assembly 600 for connecting between the cutting assembly and the inner race 400;

the flanging mechanism 700 is used for flanging the edge of the plastic cup;

the first spring 310 is disposed between the outer pressing ring 300 and the upper die holder 100, the second spring 410 is disposed between the inner pressing ring 400 and the upper die holder 100, the lower die holder 200 is provided with an outer pressing groove 240 adapted to the outer pressing ring 300, and the lower die holder 200 is provided with an inner cutting groove 250 adapted to the cutting knife 510.

The upper die holder 100 and the lower die holder 200 are clamped to clamp the sheet-shaped blank, the outer pressing ring 300 and the inner pressing ring 400 are used for clamping the blank, then the cutting assembly is used for cutting the clamped blank, the cutting knife 510 is arranged between the outer pressing ring 300 and the inner pressing ring 400 and adjacent to the inner pressing ring 400, the cutting knife 510 is connected with the inner pressing ring 400 through the connecting assembly 600, the inner pressing ring 400 and the cutting knife 510 can mutually move, the flanging mechanism 700 is used for flanging the edge of the plastic cup downwards, the first spring 310 acts on the outer pressing ring 300, the clamping degree of the outer pressing ring 300 on the blank is improved, the outer pressing ring 300 is matched with the outer pressing groove 240 when being clamped, the second spring 410 acts on the inner pressing ring 400, the clamping degree of the inner pressing ring 400 on the blank is improved, the cutting knife 510 is matched with the inner pressing groove 250 when being cut, the disposable plastic cup is formed in the die cavity 210 of the lower die holder 200, the plastic cup is formed in the process, the pressurizing cavity 110 is blown, the air in the die cavity 210 is pumped through the micropore 230, the forming speed of the plastic cup is improved, the blank is rapidly clinged to the die cavity 210, and then the pressurizing cavity 220 is connected with the pressurizing cavity 220, and the pressurizing air source is connected with the pressurizing air source 110 after the pressurizing cavity is formed.

Example 2:

as shown in fig. 3 and 4, the embodiment of the present application provides a mold blank blow molding apparatus for producing plastic cups, further, the connecting assembly 600 includes:

the mounting seat 610 is mounted on the upper die holder 100;

a gear 620 mounted on the mount 610;

a first rack 630 mounted on the inner race 400;

a second rack 640 mounted on the cutter 510;

a reset assembly 650 installed between the cutter 510 and the inner pressure ring 400;

a driving assembly 660 for driving the mount 610 to move;

wherein, the two sides of the gear 620 are connected with the first rack 630 and the second rack 640.

The mounting seat 610 is mounted on the upper die holder 100, the gear 620 is mounted on the mounting seat 610, when the upper die holder 100 and the lower die holder 200 are assembled, the inner die holder 400 is contracted inwards towards the upper die holder 100, when the inner die holder 400 moves, the first rack 630 is mounted and connected with the inner die holder 400 to move simultaneously, the first rack 630 drives the gear 620 to rotate, then the gear 620 drives the second rack 640 to move, when the inner die holder 400 moves in the upper die holder 100, the cutter 510 moves outwards towards the upper die holder 100 and acts on a blank to cut the blank, the reset component 650 resets the relative position between the cutter 510 and the inner die holder 400, the driving component 660 controls the mounting seat 610 to move, the cutter 510 continues to move outwards towards the upper die holder 100, and the flanging process for the edge of the plastic cup is completed.

Further, the reset component 650 includes:

a reset seat 651 mounted to the cutter 510;

a push plate 652 disposed in the reset seat 651, the push plate 652 being provided with a connection handle 653, the connection handle 653 extending from the inside of the reset seat 651 to the outside of the reset seat 651 and being connected with the first rack 630;

third springs 654 disposed on both sides of the push plate 652 and biased against the reset seat 651;

wherein the reset seat 651 is provided with a sliding groove 655 adapted to the connection handle 653.

The reset seat 651 is mounted on the cutter 510, the push plate 652 is placed in the middle position of the reset seat 651 under the action of the third springs 654 on two sides in the reset state, when the inner pressing ring 400 and the cutter 510 move mutually, the push plate 652 moves simultaneously with the first connected racks 630 through the connecting handle 653, the push plate 652 moves in the reset seat 651, the third springs 654 on two sides are deformed, when the upper die holder 100 and the lower die holder 200 are opened, the inner pressing ring 400 and the cutter 510 are reset under the action of the second springs 410 and the third springs 654, and the extension of the inner pressing ring 400 is larger than the extension of the cutter 510 after reset through the reset assembly 650, so that the blank is ensured to be cut after the blank is pressed by the inner pressing ring 400.

Example 3:

as shown in fig. 2, 3 and 5, the embodiment of the present application provides a mold blank blow molding apparatus for producing plastic cups, which includes the above technical features, and further, the flanging mechanism 700:

a supporting seat 710 disposed in the inner slot 250 and corresponding to the cutter 510;

a fourth spring 720 disposed between the abutment 710 and the interior slot 250;

a burring block 730 disposed on the inner pressing ring 400;

a pushing part 740 disposed on the cutter 510;

a sliding block 750 disposed on the flange block 730;

the limiting blocks 760 are hinged to two ends of the sliding shifting block 750;

a fifth spring 770 interposed between the stopper 760 and the sliding dial 750;

the flange block 730 is provided with a sliding groove 780 adapted to the sliding dial 750, the sliding groove 780 is provided with an arc groove 790, and the limiting block 760 is adapted to the sliding groove 780.

The abutment seat 710 is placed in the inner slot 250, when the cutting knife 510 is cut, the abutment seat 710 continues to extend outwards and abut against the abutment seat 710 through the driving component 660, the abutment seat 710 is retracted inwards to the lower die holder 200, the flanging block 730 extends out of the inner annular ring 400 through movement of the cutting knife 510, flanging is performed on the side wall of the plastic cup, the cutting knife 510 acts on the limiting block 760 through the pushing part 740, the limiting block 760 and the sliding shifting block 750 move, the flanging block 730 is controlled to move, when the pushing part 740 is placed between the two limiting blocks 760, the flanging block 730 moves simultaneously with the cutting knife 510, when the limiting block 760 moves to the arc-shaped groove 790, the positions of the limiting block 760 and the sliding shifting block 750 are locked through the fifth spring 770, the pushing part 740 is separated from the limiting block 760 and the sliding shifting block 750, flanging is completed, when the cutting knife 510 is retracted and reset, the pushing part 740 acts on the other limiting block 760 to retract inwards to reset the limiting block 400 through the pushing part 740 until the limiting block 760 abuts against the pushing part 740 to be placed in the arc-shaped groove 790, and the cutting knife 510 is further retracted.

Example 4:

as shown in fig. 3, 6 and 7, the embodiment of the present application provides a mold blank blow molding apparatus for producing plastic cups, further, the upper mold base 100 includes:

a vent hole 120 connected to the pressurizing chamber 110;

the valve cavity 130 is arranged on the upper die holder 100 and is positioned at the middle end of the vent hole 120;

a valve body 140 disposed in the valve chamber 130;

a bracket seat 150 disposed in the valve chamber 130;

a first electromagnet 160 disposed on the bracket base 150;

a second electromagnet 170 disposed on the valve body 140 and adapted to the first electromagnet 160;

wherein, the valve body 140 is movably mounted on the bracket base 150.

The blank is formed by exhausting the gas in the pressurizing cavity 110 through the vent hole 120, the high-pressure gas in the pressurizing cavity 110 is controlled by opening and closing the valve cavity 130 and the valve body 140, the bracket seat 150 is arranged in the valve cavity 130, the valve body 140 moves when the first electromagnet 160 and the second electromagnet 170 interact, when the valve cavity 130 and the valve body 140 are opened, other exhausting in the pressurizing cavity 110 is realized, and when the pressurizing cavity 110 is closed, the valve cavity 130 is disconnected from circulation.

Further, the driving assembly 660 includes:

a drive chamber 661 connected with the valve chamber 130;

a piston 662 disposed in the driving chamber 661 and connected to the mounting base 610;

a sixth spring 663 is disposed between the mount 610 and the upper die holder 100.

When the valve cavity 130 is opened, the air pressure in the valve cavity 130 rises and is communicated with the driving cavity 661, the air pressure in the driving cavity 661 rises to push the piston 662 to move, meanwhile, the mounting seat 610 is made to move, at the moment, the inner pressing ring 400 is static, the gear 620 moves in the gravity direction, the gear 620 simultaneously rotates around the axis of the mounting seat, the second rack 640 moves the rod when the gear 620 rotates, the cutter 510 continuously extends outwards in the flanging process is realized, when the valve cavity 130 and the valve body 140 are closed, the upper die holder 100 and the lower die holder 200 are opened, the driving cavity 661 is communicated with the atmosphere through the valve cavity 130, and the piston 662 and the mounting seat 610 are reset under the action of the sixth spring 663, so that the reset of the inner pressing ring 400 and the cutter 510 is ensured.

Example 5:

as shown in fig. 2, an embodiment of the present application provides a mold blank blow molding apparatus for producing plastic cups, which further includes, in addition to the above technical features:

the air jet head 800 is mounted on the lower die holder 200 and is connected with the die cavity 210.

When the upper die holder 100 and the lower die holder 200 are opened, the plastic cup is blown out from the die cavity 210 by matching with the jet head 800 through the flanging position of the edge of the plastic cup under the action of the propping seat 710, so that the demolding efficiency and stability of the plastic cup are improved, and the jet head 800 is connected with a high-pressure air source.

Example 6:

the application also provides a using method of the mould blank blow molding device for producing the plastic cup, which comprises the following specific steps:

s1, a strip-shaped blank is moved between an upper die holder 100 and a lower die holder 200, die assembly is carried out between the upper die holder 100 and the lower die holder 200, the blank is clamped through an outer pressing ring 300 and an inner pressing ring 400, and a cutting knife 510 cuts the blank in the clamping process of the inner pressing ring 400;

s2, after the compaction is completed, the valve cavity 130 is opened through the valve body 140, air in the pressurizing cavity 110 is filled into the die cavity 210, meanwhile, air is pumped through the negative pressure cavity 220, the blank is tightly attached to the inner wall surface of the die cavity 210, the blow molding of the plastic cup is completed, meanwhile, when the valve body 140 is opened, high-pressure air in the pressurizing cavity 110 enters the driving cavity 661 to push the piston 662 and the mounting seat 610 to move, the cutter 510 is continuously moved into the inward grooving 250, and the flanging block 730 is pushed to move to flanging the edge of the plastic cup;

s3, after the plastic cups are molded, the upper die holder 100 and the lower die holder 200 are opened, the plastic cups in the die cavity 210 are ejected through the air jet head 800, the blown plastic cups are blown out of the die range through a fan arranged on the side edge of the die, blanking is completed, and the blank is moved to continue the steps.

The outer pressing ring 300 and the inner pressing ring 400 are clamped firstly, the cutting knife 510 is used for cutting, the position stability of blanks after cutting is improved, the precision of the formed plastic cup is further improved, the edges are turned over in the plastic cup forming process, and the structural strength of the plastic cup is improved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (8)

1. A mold base blow molding apparatus for producing plastic cups, comprising:

an upper die holder (100) comprising a plenum (110);

the lower die holder (200) comprises a die cavity (210) and a negative pressure cavity (220), wherein the die cavity (210) is communicated with the negative pressure cavity (220) through micropores (230);

an outer pressing ring (300) for clamping the embryo;

an inner pressing ring (400) for clamping the embryo;

-a cutting assembly for severing the clamped embryo body, the cutting assembly comprising a cutting knife (510);

a connecting assembly (600) for connecting between the cutting assembly and the inner pressing ring (400);

the flanging mechanism (700) is used for flanging the edge of the plastic cup;

the die comprises an outer pressing ring (300) and an upper die holder (100), wherein a first spring (310) is arranged between the outer pressing ring (300) and the upper die holder (100), a second spring (410) is arranged between the inner pressing ring (400) and the upper die holder (100), an outer pressing groove (240) matched with the outer pressing ring (300) is formed in a lower die holder (200), and an inner cutting groove (250) matched with a cutting knife (510) is formed in the lower die holder (200).

2. The apparatus for blow molding a mold for producing a plastic cup according to claim 1, wherein the connecting assembly (600) comprises:

the mounting seat (610) is mounted on the upper die holder (100);

a gear (620) mounted on the mount (610);

a first rack (630) mounted on the inner pressure ring (400);

a second rack (640) mounted on the cutter (510);

a reset assembly (650) mounted between the cutter (510) and the inner race (400);

a drive assembly (660) for driving the movement of the mount (610);

the two sides of the gear (620) are connected with the first rack (630) and the second rack (640) in a mounting way.

3. A blow molding apparatus for producing plastic cups according to claim 2, wherein said reset assembly (650) comprises:

a reset seat (651) mounted on the cutter (510);

the push plate (652) is arranged in the reset seat (651), the push plate (652) is provided with a connecting handle (653), and the connecting handle (653) extends out of the reset seat (651) from the inside of the reset seat (651) and is connected with the first rack (630);

a third spring (654) which is arranged at two sides of the push plate (652) and is propped against the reset seat (651);

wherein, reset seat (651) is provided with spout (655) with handle (653) adaptation.

4. A mould-blank blow moulding apparatus for the production of plastic cups according to claim 3, characterized in that said flanging mechanism (700):

a support seat (710) placed in the inner slot (250) and corresponding to the cutter (510);

a fourth spring (720) arranged between the abutting seat (710) and the internal cutting groove (250);

a flange block (730) arranged on the inner pressing ring (400);

a pushing part (740) arranged on the cutting knife (510);

a sliding shifting block (750) arranged on the flanging block (730);

limiting blocks (760) hinged to two ends of the sliding shifting block (750);

a fifth spring (770) disposed between the stopper (760) and the sliding dial block (750);

wherein, turn-ups piece (730) are provided with sliding tray (780) with slip shifting block (750) adaptation, sliding tray (780) are provided with arc wall (790), stopper (760) and sliding tray (780) adaptation.

5. The apparatus for blow molding a mold for producing a plastic cup according to claim 4, wherein the upper mold base (100) comprises:

a vent hole (120) connected to the pressurizing chamber (110);

the valve cavity (130) is arranged on the upper die holder (100) and is positioned at the middle end of the vent hole (120);

a valve body (140) disposed within the valve cavity (130);

a bracket seat (150) arranged in the valve cavity (130);

a first electromagnet (160) disposed on the support base (150);

a second electromagnet (170) disposed on the valve body (140) and adapted to the first electromagnet (160);

wherein the valve body (140) is movably mounted on the bracket seat (150).

6. The apparatus for blow molding a mold for producing plastic cups according to claim 5, wherein said driving assembly (660) comprises:

a drive chamber (661) connected to the valve chamber (130);

a piston (662) disposed in the drive chamber (661) and connected to the mount (610);

and a sixth spring (663) arranged between the mounting seat (610) and the upper die holder (100).

7. The apparatus for blow molding a mold for producing a plastic cup according to claim 6, further comprising:

and the jet head (800) is arranged on the lower die holder (200) and is connected with the die cavity (210).

8. A method of using the mold blank blow molding apparatus for producing plastic cups as defined in claim 7, comprising the specific steps of:

s1, a strip-shaped blank is moved between an upper die holder (100) and a lower die holder (200), die assembly is carried out between the upper die holder (100) and the lower die holder (200), the blank is clamped through an outer pressing ring (300) and an inner pressing ring (400), and a cutting knife (510) cuts the blank in the clamping process of the inner pressing ring (400);

s2, after the compaction is completed, the valve cavity (130) is opened through the valve body (140), air in the pressurizing cavity (110) is filled into the die cavity (210), meanwhile, air is pumped through the negative pressure cavity (220), the blank is tightly attached to the inner wall surface of the die cavity (210), the blow molding of the plastic cup is completed, meanwhile, when the valve body (140) is opened, high-pressure air in the pressurizing cavity (110) enters the driving cavity (661) to push the piston (662) and the mounting seat (610) to move, the cutting knife (510) is enabled to continuously move into the inward cutting groove (250), and the flanging block (730) is pushed to move to flanging the edge of the plastic cup;

s3, after the plastic cups are molded, the upper die holder (100) and the lower die holder (200) are opened, the plastic cups in the die cavity (210) are sprayed out through the air jet head (800), the blown plastic cups are blown out of the die range through a fan arranged on the side edge of the die, blanking is completed, and the blank is moved to continue the steps.