CN209888120U

CN209888120U - Blow molding production line

Info

Publication number: CN209888120U
Application number: CN201920565569.0U
Authority: CN
Inventors: 周宗佑
Original assignee: Fujian Yinghao Cultural Creative Co Ltd
Current assignee: Fujian Yinghao Cultural Creative Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-01-03
Anticipated expiration: 2029-04-24

Abstract

The utility model relates to a blow molding production line, which comprises a double-plastic mixing forming mechanism and an automatic ball drawing machine; the double-plastic mixed forming mechanism comprises a first packing auger for feeding HIPS (high impact polystyrene) and a second packing auger for feeding GPPS (general purpose polystyrene), electric heating rings are arranged on the outer peripheries of the first packing auger and the second packing auger, discharge ports of the first packing auger and the second packing auger are connected to the same extrusion die head, and a stripping air pressure mechanism for shearing a parison and forming is arranged right below the extrusion die head; the automatic ball pitching machine comprises a cylindrical outer shell, wherein one end face of the outer shell is provided with a ball inlet, the other end face of the outer shell is provided with a ball outlet, a roller which is driven by a motor to rotate is arranged in the outer shell, the roller is declined from the ball inlet to the ball outlet, the roller comprises a plurality of impact spokes which are uniformly distributed on the peripheral wall of the roller along the axial direction, and the bottom of the outer shell is provided with a water gap material outlet; the double-plastic mixing forming mechanism and the automatic ball pulling machine are used for conveying materials through the chain plate conveyor, and the structure is simple.

Description

Blow molding production line

Technical Field

The utility model relates to a blow molding production line.

Background

The Christmas ball and other artware can increase the festival atmosphere and are loved by people, so that the market demand is large. The existing blow molding of artware such as Christmas balls and the like only can use one material (HIPS) when raw materials extrude a parison, and oil injection and electroplating are needed to generate a pearly-luster effect after the parison is molded into the Christmas balls, so that the operation is complicated, the equipment is single, and the efficiency is low; the existing Christmas ball is made by blowing a strip-shaped tubular parison in a blow mold, water gap materials are remained at the periphery of the formed Christmas ball, the joint of the water gap materials and the Christmas ball is very weak because of being extruded by the blow mold, and the Christmas ball is very easy to break after being kept stand and cooled, but even if the Christmas ball is still kept still, external force is needed, otherwise the water gap materials cannot be broken by themselves. The traditional mode of pulling the material at the water gap is manually pulled, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of prior art, the utility model aims to solve the technical problem that a blow molding production line is provided, not only simple structure, convenient high efficiency moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: a blow molding production line comprises a double-plastic mixing forming mechanism and an automatic ball drawing machine; the double-plastic mixed forming mechanism comprises a first packing auger for feeding HIPS (high impact polystyrene) and a second packing auger for feeding GPPS (general purpose polystyrene), electric heating rings are arranged on the outer peripheries of the first packing auger and the second packing auger, discharge ports of the first packing auger and the second packing auger are connected to the same extrusion die head, and a stripping air pressure mechanism for shearing a parison and forming is arranged right below the extrusion die head; the automatic ball pitching machine comprises a cylindrical outer shell, wherein one end face of the outer shell is provided with a ball inlet, the other end face of the outer shell is provided with a ball outlet, a roller which is driven by a motor to rotate is arranged in the outer shell, the roller is declined from the ball inlet to the ball outlet, the roller comprises a plurality of impact spokes which are uniformly distributed on the peripheral wall of the roller along the axial direction, and the bottom of the outer shell is provided with a water gap material outlet; and the double-plastic mixing forming mechanism and the automatic ball pulling machine are used for conveying materials through a chain plate conveyor.

Preferably, first auger and second auger all include an axis horizontally feeding section of thick bamboo, and feeding section of thick bamboo is inside to be the auger subassembly through motor drive is rotatory, and feeding section of thick bamboo is gone up the peripheral part and all is equipped with wide feeder hopper narrow down, and the feeder hopper all communicates with feeding section of thick bamboo is inside, and the tip that the feeder hopper was kept away from to the feeding section of thick bamboo all is equipped with the discharge gate, and the electric heating ring all is equipped with a plurality of along feeding section of thick bamboo's axial cover.

Preferably, an annular HIPS cavity and an annular GPPS cavity are arranged at the inner upper part of the extrusion die head, an annular mixing cavity is arranged at the inner lower part of the extrusion die head, an upper annular cavity opening of the mixing cavity is connected with the HIPS cavity and a lower annular cavity opening of the GPPS cavity, the GPPS cavity is located at the outer peripheral part of the HIPS cavity, the outer peripheral wall of the GPPS cavity is connected with the outer peripheral wall of the mixing cavity, the inner peripheral wall of the HIPS cavity is connected with the inner peripheral wall of the mixing cavity, a discharge hole of the first packing auger is communicated with the HIPS cavity, a discharge hole of the second packing auger is communicated with the GPPS cavity; and an electric heating ring is sleeved on the periphery of the extrusion die head.

Preferably, the stripping pneumatic mechanism comprises a machine table, a first slide rail is erected on the machine table, at least one group of blow molds are arranged on the first slide rail, each blow mold comprises a first half mold and a second half mold, the first half mold is sleeved on the first slide rail through a first base, the first base is provided with a second slide rail, the second half mold is sleeved on the second slide rail through a second base, one side above the blow mold is provided with an extrusion die head, the other side above the blow mold is provided with an upper blow pipe, and a lower blow pipe corresponding to the upper blow pipe is arranged below the blow mold; the machine table is provided with a first air cylinder for driving the first base to slide left and right along the first slide rail, and the first base is provided with a second air cylinder for driving the second half die to slide left and right along the second slide rail; the first half die is provided with a 8-shaped first concave cavity, the second half die is provided with a 8-shaped second concave cavity, the upper part of the first half die is provided with a first upper air blowing groove connected with the first concave cavity, the lower part of the first half die is provided with a first lower air blowing groove connected with the first concave cavity, the upper part of the second half die is provided with a second upper air blowing groove connected with the second concave cavity, and the lower part of the second half die is provided with a second lower air blowing groove connected with the second concave cavity; the first concave cavity and the second concave cavity form a gourd-shaped molding cavity after the first half mold and the second half mold are buckled, the first upper air blowing groove and the second upper air blowing groove form an upper air blowing channel after the first half mold and the second half mold are buckled, and the first lower air blowing groove and the second lower air blowing groove form a lower air blowing channel after the first half mold and the second half mold are buckled; one end of the upper blowing pipe is connected with a core rod of an upper blowing head, the other end of the upper blowing pipe is externally connected with compressed gas, and the upper blowing head is connected with a telescopic rod of a third cylinder; one end of the lower air blowing pipe is connected with a core rod of a lower air blowing head, the other end of the lower air blowing pipe is externally connected with compressed air, and the lower air blowing head is connected with a telescopic rod of a fourth air cylinder; a scissor used for cutting off the strip-shaped tubular parison is arranged beside a discharge port of the extrusion die head, the scissor is driven by a fifth cylinder to open and close, the scissor and the fifth cylinder are both arranged on a sliding block, a sliding way is longitudinally arranged beside the sliding block, the sliding block is connected with a telescopic rod of a sixth cylinder, and the sixth cylinder drives the sliding block to slide up and down along the sliding way; the scissors comprise a left cutter body and a right cutter body which are arranged in a crossed mode, the middle of the left cutter body is hinged to the middle of the right cutter body through a pin shaft, the tail end of the left cutter body is hinged to the head end of a right connecting shaft through the pin shaft, the tail end of the right cutter body is hinged to the head end of the left connecting shaft through the pin shaft, and the tail end of the left connecting shaft and the tail end of the right connecting shaft are hinged to a telescopic rod of a fifth air cylinder through the pin shaft.

Preferably, a material collecting groove is arranged below the machine table of the stripping air pressure mechanism.

Preferably, the outer shell is supported on the horizontal ground through support legs, and the outer shell also declines from the ball inlet to the ball outlet.

Preferably, the length of the nozzle material outlet is greater than or equal to that of the roller, and a nozzle receiving groove is arranged right below the nozzle material outlet of the outer shell; the drum comprises a rotating shaft arranged in the outer shell through a bearing, the high end and the low end of the rotating shaft are coaxially and fixedly provided with circular end parts, a plurality of impact spokes fixedly arrange the two circular end parts into a whole, and the distance between every two adjacent impact spokes is smaller than the outer diameter of the Christmas ball; the top surface of shell body is provided with one and explores the mouth, explores to articulate on the mouth and has a apron that the rotation is opened and close.

Preferably, a ball inlet track is arranged on the ball inlet, a ball outlet track is arranged on the ball outlet, the ball inlet track inclines downwards towards the ball outlet, and a ball outlet port of the ball outlet track is provided with a switch door.

Preferably, the horizontal section of the chain plate conveyor is positioned at the bottom of an inner groove of the collecting groove, the width of the horizontal section of the chain plate conveyor is equal to the width of the collecting groove, one end of the horizontal section of the chain plate conveyor outwards penetrates through the collecting groove and is connected with an upward inclined section, and the high end of the inclined section is positioned right above the ball inlet track.

Compared with the prior art, the utility model discloses following beneficial effect has: when the extrusion die is used, HIPS material can be fed through the first packing auger, GPPS material mixed with pearlescent color master batch is fed into the second packing auger, and the two materials are combined in the extrusion die head to form a blank, so that the surface of the blank has a pearlescent effect; the Christmas balls after blow molding and cooling are conveyed into the roller by the chain plate conveyor, the rotating roller enables the Christmas balls with the water gap materials to continuously collide with the impact spokes, the connection part of the water gap materials and the Christmas balls is extruded by the blow molding die and becomes very weak, the Christmas balls after standing and cooling become brittle and are very easy to break, and the water gap materials and the Christmas balls can be separated by the collision.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic view of the structure of a double plastic mixing molding mechanism.

Fig. 3 is a schematic view of the configuration of an extrusion die.

Fig. 4 is a schematic view of the configuration of the blow mold.

Fig. 5 is a schematic view of the configuration of the upper blowing head.

Fig. 6 is a top view of the scissors.

Fig. 7 is a side view of the scissors.

FIG. 8 is a schematic top view of the lower blowhead.

FIG. 9 is a schematic view showing the construction of an automatic ball pitching machine.

Fig. 10 is a cross-sectional view taken at a-a in fig. 9.

Fig. 11 is a schematic view of the structure of a christmas ball with water gap material.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in FIG. 1 ~ 11, a blow molding production line comprises a double-plastic mixing forming mechanism and an automatic ball pulling machine, wherein the double-plastic mixing forming mechanism comprises a first auger 22 for feeding HIPS and a second auger 23 for feeding GPPS, electric heating rings 24 are arranged on the peripheries of the first auger and the second auger, discharge ports 25 of the first auger and the second auger are connected to the same extrusion die head, a material stripping air pressure mechanism for shearing a parison and forming is arranged right below the extrusion die head, the electric heating rings are used for melting the HIPS and the GPPS materials, the automatic ball pulling machine comprises a cylindrical outer shell 32, a ball inlet is formed in one end face of the outer shell, a ball outlet is formed in the other end face of the outer shell, a roller 34 driven to rotate by a motor 33 is arranged in the outer shell, the roller descends from the ball inlet to the ball outlet, the roller comprises a plurality of axially extending spokes 35 uniformly distributed on the peripheral wall of the roller, a material outlet 36 is formed in the bottom of the outer shell, and the double-plastic mixing forming mechanism and the automatic ball pulling machine are used for conveying the materials through a chain plate conveyor 37.

The embodiment of the utility model provides an in, first auger all includes axis horizontally feeding section of thick bamboo 27 with the second auger, and feeding section of thick bamboo is inside to be the auger subassembly rotatory through the drive of motor 28, and feeding section of thick bamboo is gone up the peripheral part and all is equipped with wide feeder hopper 29 narrow down, and the feeder hopper all communicates with feeding section of thick bamboo is inside, and a tip that feeding section of thick bamboo kept away from the feeder hopper all is equipped with the discharge gate, and the electric heating ring all is equipped with a plurality of along feeding section of thick bamboo's axial cover.

In the embodiment of the utility model, the interior upper portion of extrusion die head is equipped with annular HIPS chamber 30, annular GPPS chamber 31, the interior lower part of extrusion die head is equipped with annular mixing chamber 26, the last annular mouth that goes up in mixing chamber links up with the HIPS chamber, the lower annular mouth in GPPS chamber, wherein GPPS chamber is located the peripheral part in HIPS chamber, the peripheral wall in GPPS chamber links up the peripheral wall in mixing chamber, the internal perisporium in HIPS chamber links up the internal perisporium in mixing chamber, the discharge gate of first auger communicates the HIPS chamber, the discharge gate of second auger communicates the GPPS chamber, form multilayer coextrusion die head; the HIPS cavity and the hot melt blank in the GPPS cavity are extruded by gravity and continuous feeding to flow down into the mixing cavity, and the HIPS hot melt blank in the mixing cavity is layered and coextruded into a strip-shaped tubular parison outside the hot melt blanks in the GPPS cavity and the inner side of the GPPS cavity.

In the embodiment of the present invention, the outer circumferential portion of the extrusion die head is also sleeved with an electrical heating ring.

In the embodiment of the present invention, the material-removing pneumatic mechanism includes a machine table 1, a first slide rail 2 is erected on the machine table 1, at least one set of blow molds 3 is disposed on the first slide rail 2, the blow molds 3 include a first half mold 301 and a second half mold 302, the first half mold 301 is sleeved on the first slide rail 2 through a first base 4, a second slide rail 5 is disposed on the first base 4, the second half mold 302 is sleeved on the second slide rail 5 through a second base 6, an extrusion die head 7 is disposed on one side above the blow molds 3, an upper blowing pipe 8 is disposed on the other side above the blow molds 3, and a lower blowing pipe 9 corresponding to the upper blowing pipe 8 is disposed below the blow molds 3; preferably, two sets of blow molding dies 3 which are symmetrically arranged are arranged on the first slide rail 2, the two sets of blow molding dies 3 alternately work, when one set of blow molding dies 3 is in a standing and cooling state, the other set of blow molding dies 3 perform feeding and blow molding, double-station blow molding is realized, time is saved, efficiency is greatly improved, and the number of the set sets of blow molding dies 3 is determined according to actual conditions and is not limited to the actual conditions.

In the embodiment of the present invention, the machine table 1 is provided with a first cylinder 10 for driving the first base 4 to slide left and right along the first slide rail 2, and the first base 4 is provided with a second cylinder 11 for driving the second half mold 302 to slide left and right along the second slide rail 5; the first base 4 is provided with a first connecting hole for the first slide rail 2 to pass through, and the second base 6 is provided with a second connecting hole for the second slide rail 5 to pass through; the first half module 301 is fixedly connected with the first base 4 through a screw nut component or a welding process, the first base 4 is fixedly connected with the telescopic rod of the first cylinder 10 through the screw nut component or the welding process, the cylinder body of the first cylinder 10 is fixedly connected with the machine table 1 through the screw nut component or the welding process, the cylinder body of the second cylinder 11 is fixedly connected with the first base 4 through the screw nut component or the welding process, and the second half module 302 is fixedly connected with the telescopic rod of the second cylinder 11 through the screw nut component or the welding process.

In the embodiment of the present invention, the first half mold 301 has a first cavity 303 with a 8 shape, the second half mold 302 has a second cavity 304 with a 8 shape, the upper portion of the first half mold 301 is provided with a first upper blowing groove 305 connected to the first cavity 303, the lower portion of the first half mold 301 is provided with a first lower blowing groove 306 connected to the first cavity 303, the upper portion of the second half mold 302 is provided with a second upper blowing groove 307 connected to the second cavity 304, and the lower portion of the second half mold 302 is provided with a second lower blowing groove 308 connected to the second cavity 304; the first cavity 303 and the second cavity 304 form a gourd-shaped molding cavity after the first half mold 301 and the second half mold 302 are fastened, the first upper blowing groove 305 and the second upper blowing groove 307 form an upper blowing channel after the first half mold 301 and the second half mold 302 are fastened, and the first lower blowing groove 306 and the second lower blowing groove 308 form a lower blowing channel after the first half mold 301 and the second half mold 302 are fastened; the surface roughness of the first cavity 303 and the second cavity 304 is such that the first cavity and the second cavity can be naturally separated from the molded part in the case of mold splitting.

In the embodiment of the present invention, one end of the upper blowing pipe 8 is connected to the core rod of the upper blowing head 12, the other end of the upper blowing pipe 8 is externally connected to compressed air, and the upper blowing head 12 is connected to the telescopic rod of the third air cylinder 13; one end of the lower blowing pipe 9 is connected with a core rod of a lower blowing head 14, the other end of the lower blowing pipe 9 is externally connected with compressed gas, and the lower blowing head 14 is connected with a telescopic rod of a fourth cylinder 15; the compressed gas may be generated by an air compressor; therefore, the cylinder body of the third cylinder 13 and the cylinder body of the fourth cylinder 15 are fixedly connected with a vertical frame through a screw and nut assembly or a welding process, and the vertical frame is arranged on the ground; compressed gas is introduced into a forming cavity to carry out blow molding to form the prior process; the upper blowing head 12 and the lower blowing head 14 are arranged to be not interfered with the first base 4, the first slide rail 2 and the second slide rail 5, two groups of first slide rails 2 and second slide rails 5 are arranged on two sides below the blow molding die 3, and the upper blowing head 12 and the lower blowing head 14 are arranged between the two groups of first slide rails 2 and second slide rails 5.

In the embodiment of the present invention, a scissors 16 for cutting off the strip-shaped tubular parison is disposed beside the discharge port of the extrusion die head 7, the scissors 16 is driven by a fifth cylinder 17 to open and close, the scissors 16 and the fifth cylinder 17 are both disposed on a slider 18, a slide 19 is longitudinally disposed beside the slider 18, the slider 18 is connected to an expansion link of a sixth cylinder 20, and the sixth cylinder 20 drives the slider 18 to slide up and down along the slide 19; the slideway 19 is fixedly connected with the machine table 1 through a screw and nut assembly or a welding process; the extrusion die head 7 contains a hot melt blank capable of being blown, the hot melt blank is automatically blanked into a strip-shaped tubular parison under the action of gravity and continuous feeding extrusion, when the strip-shaped tubular parison is extruded to a certain length, the scissors 16 are driven by the fifth air cylinder 17 to be closed so as to cut the strip-shaped tubular parison with a certain length, then the scissors 16 are driven by the sixth air cylinder 20 to move downwards along the slide way 19 so as to drive the scissors to descend together with the strip-shaped tubular parison with a certain length and enter between the first half die 301 and the second half die 302, the first half die 301 and the second half die 302 are closed, the scissors 16 are driven by the fifth air cylinder 17 to be opened, and then the scissors 16 are driven by the sixth air cylinder 20 to move upwards along the slide way 19 so as to return to the initial position.

In the embodiment of the present invention, the scissors 16 includes a left cutter body 1601 and a right cutter body 1602 which are arranged in a crossed manner, the middle of the left cutter body 1601 is hinged to the middle of the right cutter body 1602 through a pin shaft, the end of the left cutter body 1601 is hinged to the head end of the left connecting shaft 1604 through a pin shaft, the end of the right cutter body 1602 is hinged to the head end of the left connecting shaft 1603 through a pin shaft, and the end of the left connecting shaft 1603 and the end of the left connecting shaft 1604 are hinged to the telescopic rod of the fifth cylinder 17 through a pin shaft; the left cutter body 1601, the right cutter body 1602, the left connecting shaft 1604 and the left connecting shaft 1603 form a four-bar linkage, the telescopic rod of the fifth cylinder 17 extends out, the left cutter body 1601 and the right cutter body 1602 open around a pin shaft, the telescopic rod of the fifth cylinder 17 is retracted, and the left cutter body 1601 and the right cutter body 1602 close around the pin shaft.

The embodiment of the present invention provides an embodiment, the below of the machine platform 1 is provided with a collecting groove 21, the first half mold 301 and the second half mold 302 open the back formed part and drop to the chain plate conveyor in the collecting groove 21 under the action of the self-weight.

In the embodiment of the present invention, the first cylinder 10, the second cylinder 11, the third cylinder 13, the fourth cylinder 15, the fifth cylinder 17, and the sixth cylinder 20 all adopt the existing cylinders, and the gas source of the first cylinder 10, the second cylinder 11, the third cylinder 13, the fourth cylinder 15, the fifth cylinder 17, and the sixth cylinder 20 adopts the external gas, and the power source adopts the external power source; the processes of the first cylinder 10, the second cylinder 11, the third cylinder 13, the fourth cylinder 15, the fifth cylinder 17 and the sixth cylinder 20 are controlled by manual control or a control panel, and the control panel is matched with the infrared sensor.

The concrete working process of the stripping air pressure mechanism is as follows: the first half die 301 and the second half die 302 are opened and are placed below the extrusion die head 7, the hot-melt blank in the extrusion die head 7 is extruded into a strip-shaped tubular parison, the scissors 16 are closed to cut off the strip-shaped tubular parison with a preset length and descend together, the strip-shaped tubular parison with the preset length is placed between the first half die 301 and the second half die 302, the telescopic rod of the second air cylinder 11 extends out, the telescopic rod of the first air cylinder 10 is not moved, at the moment, the first half die 301 and the second half die 302 complete die assembly, and the scissors 16 ascend and reset; the telescopic rod of the first air cylinder 10 is retracted to drive the blow mold 3 which is matched with the mold to move below the station of the upper blow head 12 and above the station of the lower blow head 14, at the moment, the air outlet of the upper blow head 12 is aligned with the upper blow channel, the air outlet of the lower blow head 14 is aligned with the lower blow channel, the telescopic rod of the third air cylinder 13 and the telescopic rod of the fourth air cylinder 15 extend out, the air outlet of the upper blow head 12 is inserted into the strip-shaped tubular parison of the upper blow channel and blows air, the air outlet of the lower blow head 14 is inserted into the strip-shaped tubular parison of the lower blow channel and blows air, the process is blow molding, after the blow molding is completed, the telescopic rod of the third air cylinder 13 and the telescopic rod of the fourth air cylinder 15 are retracted, the upper blow head 12 and the lower blow head 14 are reset, and the blow mold 3 is; and after the preset time, standing and cooling are finished, the telescopic rod of the first air cylinder 10 extends out, the telescopic rod of the second air cylinder 11 retracts, the first half die 301 and the second half die 302 are separated from the formed part arranged between the first half die 301 and the second half die 302, the formed part arranged between the first half die 301 and the second half die 302 naturally falls onto a chain plate conveyor in the material collecting groove 21 under the action of gravity, and stripping is finished.

In the embodiment of the present invention, the outer casing is supported on the horizontal ground through the support legs 38, and the outer casing also has a downward inclination from the ball inlet toward the ball outlet.

In the embodiment of the utility model, the length of the outlet of the nozzle material is greater than or equal to that of the roller, and the nozzle receiving groove 39 is arranged under the outlet of the nozzle material; the separated water gap materials fall into a water gap receiving groove along a water gap material outlet to be collected so as to be recycled.

The embodiment of the utility model provides an in, be equipped with goal track 40 on the goal, be equipped with out ball track 41 on going out the ball mouth, the goal track has a down dip toward going out the ball mouth direction, and the ball on christmas along the whereabouts of goal track can fall into inside the cylinder under the inertial action, and the cylinder that has a down dip makes ball on christmas 48 after mouth of a river material 47 separation can move toward going out the ball mouth, goes out to be equipped with switch door 42 on orbital play ball port.

The embodiment of the utility model provides an in, the cylinder includes installs the pivot 43 in the shell body inside through the bearing, and the ring shape tip 44 has all coaxially set firmly to the high-end of pivot, the low side, and a plurality of striking spokes set firmly two ring shape tips as an organic wholely, and adjacent striking spoke interval is less than the external diameter of ball on christmas, and the ball on christmas can not follow and fall down between adjacent striking spoke.

In the embodiment of the utility model, the top surface of the outer shell is provided with an exploration port, and a rotary opening and closing cover plate 45 is hinged on the exploration port; the cover plate is opened to facilitate exploration, maintenance and cleaning.

In the embodiment of the present invention, each of the circular ring-shaped end portions is integrally connected to the rotating shaft via a radially extending spoke 46.

The specific working process of the automatic ball drawing machine is as follows: the Christmas balls after blow molding and cooling are conveyed into the roller by the chain plate conveyor, the rotating roller enables the Christmas balls with the water gap materials to continuously collide with the impact spokes, the connection part of the water gap materials and the Christmas balls is extruded by the blow molding die and becomes very weak, the Christmas balls after standing and cooling become brittle and are very easy to break, and the water gap materials and the Christmas balls can be separated by the collision.

In the embodiment of the utility model, the horizontal section of the chain plate conveyor is positioned at the bottom of the inner groove of the material collecting groove, the width of the horizontal section is equal to the width of the material collecting groove, one end of the horizontal section of the chain plate conveyor outwards penetrates through the material collecting groove and is connected with an upward inclined section, and the high end of the inclined section is positioned right above the goal track; the chain plate conveyor is used for conveying falling Christmas balls to the ball inlet track.

The working method of the blow molding production line comprises the following steps: (1) when the extrusion die is used, the HIPS material is fed through the first auger, the GPPS material mixed with the pearlescent color master batch is fed into the second auger, and the two materials are combined in the extrusion die head to form a blank, so that the surface of the blank has a pearlescent effect; (2) blowing the parison into a Christmas ball with a nozzle material by a stripping air pressure mechanism; (3) the Christmas balls after blow molding and cooling are conveyed into the roller by the chain plate conveyor, the rotating roller enables the Christmas balls with the water gap materials to continuously collide with the impact spokes, the connection part of the water gap materials and the Christmas balls is extruded by the blow molding die and becomes very weak, the Christmas balls after standing and cooling become brittle and are very easy to break, and the water gap materials and the Christmas balls can be separated by the collision.

The present invention is not limited to the above preferred embodiments, and any person can obtain other blow molding lines of various forms according to the teaching of the present invention. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

1. A blow molding production line, characterized in that: comprises a double-plastic mixing forming mechanism and an automatic ball drawing machine; the double-plastic mixed forming mechanism comprises a first packing auger for feeding HIPS (high impact polystyrene) and a second packing auger for feeding GPPS (general purpose polystyrene), electric heating rings are arranged on the outer peripheries of the first packing auger and the second packing auger, discharge ports of the first packing auger and the second packing auger are connected to the same extrusion die head, and a stripping air pressure mechanism for shearing a parison and forming is arranged right below the extrusion die head; the automatic ball pitching machine comprises a cylindrical outer shell, wherein one end face of the outer shell is provided with a ball inlet, the other end face of the outer shell is provided with a ball outlet, a roller which is driven by a motor to rotate is arranged in the outer shell, the roller is declined from the ball inlet to the ball outlet, the roller comprises a plurality of impact spokes which are uniformly distributed on the peripheral wall of the roller along the axial direction, and the bottom of the outer shell is provided with a water gap material outlet; and the double-plastic mixing forming mechanism and the automatic ball pulling machine are used for conveying materials through a chain plate conveyor.

2. Blow molding line according to claim 1, characterized in that: first auger and second auger all include the horizontally feeding section of thick bamboo of axis, and feeding section of thick bamboo is inside to be the auger subassembly through motor drive is rotatory, and feeding section of thick bamboo upper peripheral part all is equipped with wide feeder hopper down, and the feeder hopper all communicates with feeding section of thick bamboo is inside, and a tip that the feeder hopper was kept away from to the feeding section of thick bamboo all is equipped with the discharge gate, and electric heating ring all is equipped with a plurality of along feeding section of thick bamboo's axial cover.

3. Blow molding line according to claim 1, characterized in that: an annular HIPS cavity and an annular GPPS cavity are arranged at the inner upper part of the extrusion die head, an annular mixing cavity is arranged at the inner lower part of the extrusion die head, an upper annular cavity opening of the mixing cavity is connected with the HIPS cavity and a lower annular cavity opening of the GPPS cavity, the GPPS cavity is positioned at the outer peripheral part of the HIPS cavity, the outer peripheral wall of the GPPS cavity is connected with the outer peripheral wall of the mixing cavity, the inner peripheral wall of the HIPS cavity is connected with the inner peripheral wall of the mixing cavity, a discharge opening of the first packing auger is communicated with the HIPS cavity, a discharge opening of the second packing auger is communicated with the GPPS cavity; and an electric heating ring is sleeved on the periphery of the extrusion die head.

4. Blow molding line according to claim 1, characterized in that: the stripping air pressure mechanism comprises a machine table, a first slide rail is erected on the machine table, at least one group of blow molds are arranged on the first slide rail, each blow mold comprises a first half mold and a second half mold, the first half mold is sleeved on the first slide rail through a first base, the first base is provided with a second slide rail, the second half mold is sleeved on the second slide rail through a second base, one side above the blow molds is provided with an extrusion die head, the other side above the blow molds is provided with an upper blow pipe, and a lower blow pipe corresponding to the upper blow pipe is arranged below the blow molds; the machine table is provided with a first air cylinder for driving the first base to slide left and right along the first slide rail, and the first base is provided with a second air cylinder for driving the second half die to slide left and right along the second slide rail; the first half die is provided with a 8-shaped first concave cavity, the second half die is provided with a 8-shaped second concave cavity, the upper part of the first half die is provided with a first upper air blowing groove connected with the first concave cavity, the lower part of the first half die is provided with a first lower air blowing groove connected with the first concave cavity, the upper part of the second half die is provided with a second upper air blowing groove connected with the second concave cavity, and the lower part of the second half die is provided with a second lower air blowing groove connected with the second concave cavity; the first concave cavity and the second concave cavity form a gourd-shaped molding cavity after the first half mold and the second half mold are buckled, the first upper air blowing groove and the second upper air blowing groove form an upper air blowing channel after the first half mold and the second half mold are buckled, and the first lower air blowing groove and the second lower air blowing groove form a lower air blowing channel after the first half mold and the second half mold are buckled; one end of the upper blowing pipe is connected with a core rod of an upper blowing head, the other end of the upper blowing pipe is externally connected with compressed gas, and the upper blowing head is connected with a telescopic rod of a third cylinder; one end of the lower air blowing pipe is connected with a core rod of a lower air blowing head, the other end of the lower air blowing pipe is externally connected with compressed air, and the lower air blowing head is connected with a telescopic rod of a fourth air cylinder; a scissor used for cutting off the strip-shaped tubular parison is arranged beside a discharge port of the extrusion die head, the scissor is driven by a fifth cylinder to open and close, the scissor and the fifth cylinder are both arranged on a sliding block, a sliding way is longitudinally arranged beside the sliding block, the sliding block is connected with a telescopic rod of a sixth cylinder, and the sixth cylinder drives the sliding block to slide up and down along the sliding way; the scissors comprise a left cutter body and a right cutter body which are arranged in a crossed mode, the middle of the left cutter body is hinged to the middle of the right cutter body through a pin shaft, the tail end of the left cutter body is hinged to the head end of a right connecting shaft through the pin shaft, the tail end of the right cutter body is hinged to the head end of the left connecting shaft through the pin shaft, and the tail end of the left connecting shaft and the tail end of the right connecting shaft are hinged to a telescopic rod of a fifth air cylinder through the pin shaft.

5. Blow molding line according to claim 1, characterized in that: and a material collecting groove is arranged below the machine table of the stripping air pressure mechanism.

6. Blow molding line according to claim 1, characterized in that: the outer shell is supported on the horizontal ground through the supporting legs, and the outer shell also inclines downwards from the ball inlet to the ball outlet.

7. Blow molding line according to claim 1, characterized in that: the length of the water gap material outlet is greater than or equal to that of the roller, and a water gap receiving groove is arranged right below the water gap material outlet of the outer shell; the drum comprises a rotating shaft arranged in the outer shell through a bearing, the high end and the low end of the rotating shaft are coaxially and fixedly provided with circular end parts, a plurality of impact spokes fixedly arrange the two circular end parts into a whole, and the distance between every two adjacent impact spokes is smaller than the outer diameter of the Christmas ball; the top surface of shell body is provided with one and explores the mouth, explores to articulate on the mouth and has a apron that the rotation is opened and close.

8. Blow molding line according to claim 5, characterized in that: the ball inlet is provided with a ball inlet track, the ball outlet is provided with a ball outlet track, the ball inlet track inclines downwards towards the ball outlet, and the ball outlet port of the ball outlet track is provided with a switch door.

9. Blow molding line according to claim 8, characterized in that: the horizontal section of the chain plate conveyor is located at the bottom of an inner groove of the collecting groove, the width of the horizontal section of the chain plate conveyor is equal to the width of the collecting groove, one end of the horizontal section of the chain plate conveyor outwards penetrates through the collecting groove and is connected with an upward inclined section, and the high end of the inclined section is located right above the goal track.