CN111016064A

CN111016064A - High-efficiency injection molding machine for plastic manufacturing

Info

Publication number: CN111016064A
Application number: CN201911304360.XA
Authority: CN
Inventors: 乐美华
Original assignee: Nan'an Guanling Industrial Design Co ltd
Current assignee: Nan'an Guanling Industrial Design Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-04-17

Abstract

The invention discloses a high-efficiency injection molding machine for plastic manufacturing, which structurally comprises a material heating and propelling device, a motor, a feed hopper, a hot melt plastic conveying pipe, a support ring, a plastic product forming device, an injection nozzle and a limiting frame, and has the following effects: spiral gyration heating structure through material heating advancing device formation, can make the material in carrying with under the prerequisite that hot melt plastics conveyer pipe inner wall produced the frictional force heating, the heat that the body produced in the combination auger delivery pole propelling movement, realize dual heating to the material, improve the thermalization speed of material in hot melt plastics conveyer pipe, accelerate the output utilization of hot melt plastics, form the cooling through automatic row material mould and throw the structure of sending, can cool off the plastics product of accomplishing the compound die and moulding plastics fast, and after plastics product cooling forming, automatic die sinking throws the plastics product to the conveyer belt on, export fashioned plastics product one by one through the conveyer belt.

Description

High-efficiency injection molding machine for plastic manufacturing

Technical Field

The invention relates to the field of plastic injection molding, in particular to a high-efficiency injection molding machine for plastic manufacturing.

Background

An injection molding machine, also known as an injection molding machine or an injection machine, is a main molding device for manufacturing thermoplastic plastics or thermosetting plastics into plastic products with various shapes by utilizing a plastic molding mold, the injection molding machine can heat the plastics and apply high pressure to the molten plastics to inject the molten plastics to fill a mold cavity of the mold, the traditional injection molding machine has low material heating speed during operation and needs a certain time for preheating, the material heating speed and the material heating balance are greatly reduced, and the injection molded models need to be manually taken out one by one, so the production speed of the plastic products is greatly reduced, therefore, a high-efficiency injection molding machine for manufacturing the plastics needs to be developed, the problems that the traditional injection molding machine has low material heating speed during operation and needs a certain time for preheating, the material heating speed and the material heating balance are greatly reduced, and the injection molded models need to be manually taken out one by one, greatly reducing the production speed of the plastic products.

Summary of the invention

Aiming at the defects of the prior art, the invention is realized by the following technical scheme: the utility model provides a high efficiency injection molding machine for plastic manufacturing, its structure includes material heating advancing device, motor, feeder hopper, hot melt plastics conveyer pipe, braced ring, plastic products forming device, injection nozzle, spacing, plastic products forming device top central point put and be equipped with hot melt plastics conveyer pipe, hot melt plastics conveyer pipe install perpendicularly on plastic products forming device, hot melt plastics conveyer pipe bottom be equipped with injection nozzle, injection nozzle and hot melt plastics duct connections, injection nozzle on be equipped with the braced ring, braced ring and injection nozzle connect, hot melt plastics conveyer pipe inside be equipped with material heating advancing device, material heating advancing device and hot melt plastics conveyer pipe cooperate, hot melt plastics conveyer pipe top be equipped with the motor, motor and material heating advancing device cooperate, the motor both sides be equipped with the feeder hopper, feeder hopper and hot melt plastics duct connections, spacing central point put and be equipped with hot melt plastics conveyer pipe, hot melt plastics conveyer pipe and spacing connection.

As the further optimization of this technical scheme, material heating advancing device constitute by heat conduction ring, support, louvre, heater, pushing mechanism, support both sides evenly distributed have the louvre, louvre and support structure as an organic whole, the inside heat conduction ring that is equipped with of support, heat conduction ring outer lane and support adopt interference fit, support bottom be equipped with the heater, heater and heat conduction ring connect, support below be equipped with pushing mechanism, pushing mechanism and heat conduction ring connect, pushing mechanism pass through the heat conduction ring and fix on the support.

As a further optimization of the technical scheme, the pushing mechanism comprises a heat absorption rod, a rotating shaft, a fixing ring, a spiral conveying rod, a central heat conduction rod, a reverse stop valve and a spiral blade heat conduction line, the spiral conveying rod is movably connected with the heat conduction ring, the rotating shaft is arranged at the center of the top end of the spiral conveying rod and is connected with the spiral conveying rod, the fixing ring is arranged on the rotating shaft and is connected with the rotating shaft, the heat absorption rods are uniformly distributed at the top of the fixing ring at equal intervals, the heat absorption rods are vertically arranged on the fixing ring, the reverse stop valve is arranged at the bottom end of the spiral conveying rod and is connected with the spiral conveying rod, the central heat conduction rod is arranged at the center of the spiral conveying rod and is connected with the spiral conveying rod, the spiral blade heat conduction line is arranged on the outer ring of the central heat conduction rod, the spiral blade heat conducting line is connected with the central heat conducting rod.

As a further optimization of the technical scheme, the plastic product forming device comprises an automatic discharging die, a bottom cushion, a support plate, a conveying belt and a base, wherein the bottom cushion is arranged at the center of the top of the support plate and connected with the support plate, the base is arranged below the support plate and connected with the support plate, the conveying belt is arranged between the base and the support plate, and the conveying belt is movably connected with the base.

As a further optimization of the technical scheme, the automatic discharging die comprises a quick cooling die holder, a lower die holder, a hinge and push rods, wherein the lower die holder is arranged at the bottom of the quick cooling die holder, the hinge is arranged at the front end of the lower die holder, the push rods are arranged on two sides of the lower die holder, and the push rods are matched with the lower die holder.

As the further optimization of the technical scheme, the quick cooling die holder comprises a cooling air ring, a cooling seat, an upper die holder, a cooling spiral ring, a cooling air pipe and a lifting rod, the upper die holder is arranged at the bottom of the cooling seat, the upper die holder is connected with the cooling seat, the cooling air ring is arranged above the cooling seat, the cooling air pipe is arranged between the cooling air ring and the cooling seat, the cooling air pipe is vertically arranged on the cooling seat, the cooling seat is connected with the cooling air ring through the cooling air pipe, the cooling spiral ring is arranged on the outer ring of the cooling air pipe, the cooling spiral ring is connected with the cooling air pipe, and the lifting rod is arranged at the top of the cooling seat.

Advantageous effects

The high-efficiency injection molding machine for plastic manufacturing, provided by the invention, has the advantages of reasonable design and strong functionality, and has the following beneficial effects:

according to the invention, the spiral rotary heating structure formed by the material heating and pushing device is used for heating materials under the premise that the materials are heated by friction force with the inner wall of the hot-melt plastic conveying pipe in conveying, the heat generated by the body in the pushing process of the spiral conveying rod is combined, so that the materials are heated doubly, the heating speed of the materials in the hot-melt plastic conveying pipe is increased, the output and utilization of hot-melt plastics are accelerated, the cooling and throwing structure is formed by the automatic discharging die, so that plastic products subjected to die assembly and injection molding can be rapidly cooled, after the plastic products are cooled and formed, the die is automatically opened to throw the plastic products onto the conveying belt, and the formed plastic products are output one by one through the conveying belt;

the invention discloses a spiral structure formed by combining a central heat conducting rod and a spiral blade heat conducting wire, which is arranged in a spiral conveying rod, and a movable structure realized by the top of the spiral conveying rod and the heat conducting ring is utilized to conduct heat to the heat conducting ring, the central heat conducting rod and the spiral blade heat conducting wire by utilizing a heater, so that high temperature can be generated in materials pushed by the spiral conveying rod, and the materials are comprehensively and uniformly heated, because a rotating shaft is a part cast by steel materials and is used as a heat conducting piece while being connected with the spiral conveying rod, partial heat generated by the spiral conveying rod can be absorbed, a buckle ring structure is formed by a fixing ring and a heat absorbing rod, the buckle ring structure can rotate along with the rotation of the rotating shaft, the heat absorbing rod absorbs heat at the middle section of the rotating shaft, and the heat is discharged from a radiating hole as the heat conducting piece through cyclone generated in the rotation, so that the, the torque is reduced;

the upper die holder and the lower die holder are matched, when injection molding is completed after the upper die holder and the lower die holder are matched, low temperature generated by the cooling air ring is absorbed by the cooling air pipe and the cooling spiral ring and is quickly and fully transmitted to the cooling seat, because the cooling seat is connected with the upper die holder, materials injected between the upper die holder and the lower die holder are quickly cooled and molded under the low-temperature environment, then the upper die holder and the lower die holder are driven to be separated under the action of vertical linear motion generated by the lifting rod, the lower die holder generates linear forward pushing acting force through the push rods arranged on two sides, the lower die holder and the support plate are forwards overturned under a movable structure formed by the hinge, plastic products fall into the conveying belt from the lower die holder and are sequentially conveyed forwards, and therefore the cost of manual die taking is reduced.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic front view of a high efficiency injection molding machine for plastic manufacturing according to the present invention;

FIG. 2 is a schematic cross-sectional view of a material heating propulsion device according to the present invention;

FIG. 3 is a schematic cross-sectional view of a pushing mechanism according to the present invention;

FIG. 4 is a front view schematically showing the structure of the apparatus for molding plastic articles according to the present invention;

FIG. 5 is a schematic diagram of a front view of the automatic discharge die of the present invention;

FIG. 6 is a front sectional view of the rapid cooling die holder according to the present invention.

In the figure: a material heating propulsion device-1, a heat conducting ring-11, a support-12, a heat radiating hole-13, a heater-14, a pushing mechanism-15, a heat absorbing rod-15 a, a rotating shaft-15 b, a fixing ring-15 c, a spiral conveying rod-15 d, a central heat conducting rod-15 e, a check valve-15 f, a spiral blade heat conducting line-15 g, a motor-2, a feed hopper-3, a hot melt plastic conveying pipe-4, a support ring-5, a plastic product forming device-6, an automatic discharging mold-61, a quick cooling mold seat-61 a, a cooling air ring-61 a1, a cooling seat-61 a2, an upper mold seat-61 a3, a cooling spiral ring-61 a4, a cooling-61 a5, a lifting rod-61 a6, a lower mold seat-61 b, an air duct, Hinge-61 c, push rod-61 d, bottom pad-62, support plate-63, conveyer belt-64, base-65, injection nozzle-7 and spacing frame-8.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

Example 1

Referring to fig. 1-3, the present invention provides an embodiment of a high efficiency injection molding machine for plastic manufacturing:

referring to fig. 1, a high-efficiency injection molding machine for plastic manufacturing structurally comprises a material heating and propelling device 1, a motor 2, a feed hopper 3, a hot-melt plastic conveying pipe 4, a support ring 5, a plastic product forming device 6, an injection nozzle 7 and a limiting frame 8, wherein the hot-melt plastic conveying pipe 4 is arranged at the center of the top of the plastic product forming device 6, the hot-melt plastic conveying pipe 4 is vertically installed on the plastic product forming device 6, the injection nozzle 7 is arranged at the bottom end of the hot-melt plastic conveying pipe 4, the injection nozzle 7 is connected with the hot-melt plastic conveying pipe 4, the support ring 5 is arranged on the injection nozzle 7, the support ring 5 is connected with the injection nozzle 7, the material heating and propelling device 1 is arranged in the hot-melt plastic conveying pipe 4, the material heating and propelling device 1 is matched with the hot-melt plastic conveying pipe 4, the motor 2 is arranged at the top end of the hot-melt plastic conveying pipe 4, motor 2 and material heating advancing device 1 cooperate, 2 both sides of motor be the axial symmetry structure and be equipped with two feeder hoppers 3, feeder hopper 3 and heat melt plastics conveyer pipe 4 and connect, 8 central points of spacing put and be equipped with heat and melt plastics conveyer pipe 4, heat melt plastics conveyer pipe 4 and spacing 8 and connect.

Referring to fig. 2, the material heating and propelling device 1 is composed of a heat conducting ring 11, a support 12, heat dissipation holes 13, heaters 14 and a pushing mechanism 15, the heat dissipation holes 13 are uniformly distributed on two sides of the support 12, the heat dissipation holes 13 and the support 12 are of an integrated structure, the heat conducting ring 11 is arranged inside the support 12, the outer ring of the heat conducting ring 11 and the support 12 are in interference fit, the two heaters 14 are arranged at the bottom of the support 12 in an axisymmetric structure, the heaters 14 are connected with the heat conducting ring 11, the pushing mechanism 15 is arranged below the support 12, the pushing mechanism 15 is connected with the heat conducting ring 11, and the pushing mechanism 15 is fixed on the support 12 through the heat conducting ring 11.

Referring to fig. 3, the pushing mechanism 15 is composed of a heat absorbing rod 15a, a rotating shaft 15b, a fixing ring 15c, a spiral conveying rod 15d, a central heat conducting rod 15e, a reverse check valve 15f and a spiral blade heat conducting wire 15g, the rotating shaft 15b is arranged at the center of the top end of the spiral conveying rod 15d, the rotating shaft 15b is connected with the spiral conveying rod 15d, the fixing ring 15c is arranged on the rotating shaft 15b, the fixing ring 15c is connected with the rotating shaft 15b, the rotating shaft 15b generates a driving torque through a motor 2, the heat absorbing rods 15a are uniformly distributed at the top of the fixing ring 15c at equal intervals, the heat absorbing rod 15a is vertically arranged on the fixing ring 15c, the reverse check valve 15f is arranged at the bottom end of the spiral conveying rod 15d, the reverse check valve 15f is connected with the spiral conveying rod 15d, the central heat conducting rod 15e is arranged at the center of the spiral conveying rod 15d, the central heat conducting rod 15e is connected with the spiral conveying rod 15d, a spiral blade heat conducting line 15g is arranged on the outer ring of the central heat conducting rod 15e, and the spiral blade heat conducting line 15g is connected with the central heat conducting rod 15 e.

The spiral conveying rod 15d is movably connected with the heat conducting ring 11.

The heat absorption device also comprises heat absorption rods 15a which are enclosed into a ring wall structure along a fixing ring 15c, and the central heat conduction rod 15e is connected with the heater 14 through a heat conduction ring 11.

When in use, the central heat conducting rod 15e and the helical blade heat conducting wire 15g are combined to form a helical structure, the helical structure is arranged inside the helical conveying rod 15d, and the heater 14 is used for conducting heat on the heat conducting ring 11, the central heat conducting rod 15e and the helical blade heat conducting wire 15g through the top of the helical conveying rod 15d and a movable structure realized by the heat conducting ring 11, so that high temperature can be generated in the material pushed by the helical conveying rod 15d, and the material can be heated comprehensively and uniformly, because the rotating shaft 15b is a part cast by steel material and is used as a heat conducting piece when being connected with the helical conveying rod 15d, partial heat generated by the helical conveying rod 15d can be absorbed, a retaining ring structure is formed by the fixing ring 15c and the heat absorbing rod 15a, the rotating along with the rotation of the rotating shaft 15b can be absorbed at the middle position of the rotating shaft 15b by the heat absorbing rod 15a, and cyclone, the heat is discharged from the heat dissipation holes 13, and the rotating shaft 15b is prevented from being used as a heat conduction member to transmit the heat to the inside of the motor 2, so that the service life of the motor 2 is reduced, and the torque is reduced.

Example 2

Referring to fig. 1-6, the present invention provides an embodiment of a high efficiency injection molding machine for plastic manufacturing:

Referring to fig. 4, the plastic product molding device 6 is composed of an automatic discharging mold 61, a bottom pad 62, a support plate 63, a conveying belt 64 and a base 65, the bottom pad 62 is arranged at the center of the top of the support plate 63, the bottom pad 62 is connected with the support plate 63, the base 65 is arranged below the support plate 63, the base 65 is connected with the support plate 63, the conveying belt 64 is arranged between the base 65 and the support plate 63, and the conveying belt 64 is movably connected with the base 65.

Referring to fig. 5, the automatic discharging mold 61 is composed of a fast cooling mold base 61a, a lower mold base 61b, hinges 61c and push rods 61d, the lower mold base 61b is arranged at the bottom of the fast cooling mold base 61a, two hinges 61c are arranged at the front end of the lower mold base 61b in parallel and equidistantly, the push rods 61d are arranged at two sides of the lower mold base 61b, and the push rods 61d are matched with the lower mold base 61 b.

Referring to fig. 6, the rapid cooling die holder 61a is composed of a cooling air ring 61a1, a cooling seat 61a2, an upper die holder 61a3, a cooling spiral ring 61a4, a cooling air duct 61a5, and a lifting rod 61a6, the bottom of the cooling seat 61a2 is provided with an upper die seat 61a3, the upper die seat 61a3 is connected with the cooling seat 61a2, a cooling air ring 61a1 is arranged above the cooling seat 61a2, two cooling air pipes 61a5 are arranged between the cooling air ring 61a1 and the cooling seat 61a2 in parallel at equal intervals, the cooling air pipe 61a5 is vertically installed on the cooling seat 61a2, the cooling seat 61a2 is connected with the cooling air ring 61a1 through the cooling air pipe 61a5, the outer ring of the cooling air pipe 61a5 is provided with a cooling spiral ring 61a4, the cooling spiral ring 61a4 is connected with the cooling air pipe 61a5, and the top of the cooling seat 61a2 is provided with two lifting rods 61a6 in parallel and at equal intervals.

The lower die holder 61b is movably connected with the base pad 62, the lower die holder 61b can be kept in a horizontal state in the die closing process through the base pad 62, and the lower die holder 61b is connected with the support plate 63 through the hinge 61 c.

The injection nozzle is characterized by further comprising an upper die seat 61a3, a cooling seat 61a2 and an injection nozzle 7 which are in sliding fit, and the head end and the tail end of the lifting rod 61a6 are connected with the cooling seat 61a2 and the support ring 5.

When the injection molding machine is used, according to the first embodiment, the upper die holder 61a3 is matched with the lower die holder 61b, when injection molding is completed after the upper die holder 61a3 and the lower die holder 61b are clamped, low temperature generated by the cooling air ring 61a1 is absorbed by the cooling air pipe 61a5 and the cooling spiral ring 61a4, and is quickly and sufficiently transferred to the cooling seat 61a2, because the cooling seat 61a2 is connected with the upper die holder 61a3, the material injected between the upper die holder 61a3 and the lower die holder 61b is quickly cooled and molded in a low temperature environment, then under the action of vertical linear motion generated by the lifting rod 61a6, the upper die holder 61a3 and the lower die holder 61b are driven to separate, the lower die holder 61b generates linear forward pushing force through the push rods 61d arranged at two sides, the lower die holder 61b and the support plate 63 are turned over forward through the movable structure formed by the hinge 61c, plastic products fall into the conveying belt 64 from the lower die holder 61b and, thereby reducing the cost of manual mold extraction.

The specific realization principle is as follows:

through the spiral rotary heating structure formed by the material heating and propelling device 1, on the premise that the materials are heated by friction force with the inner wall of the hot melt plastic conveying pipe 4 in the conveying process, the heat generated by the body in the pushing process of the spiral conveying rod 15d is combined, the materials are heated doubly, the thermalization speed of the materials in the hot melt plastic conveying pipe 4 is improved, and the output utilization of the hot melt plastics is accelerated, because the central heat conducting rod 15e and the spiral blade heat conducting wires 15g are combined to form a spiral structure which is arranged in the spiral conveying rod 15d, and through the movable structure realized by the top of the spiral conveying rod 15d and the heat conducting ring 11, the central heat conducting rod 15e and the spiral blade heat conducting wires 15g are subjected to heat transfer by the heater 14, so that the spiral conveying rod 15d can generate high temperature in the pushed materials, the materials are heated comprehensively and uniformly, and because the rotating shaft 15b is a, the cooling and throwing structure is formed by the automatic discharging die 61, the plastic product which is subjected to die assembly and injection molding can be rapidly cooled, the plastic product is automatically thrown onto the conveying belt 64 after the plastic product is cooled and molded, the molded plastic products are output one by one through the conveying belt 64, because the upper die base 61a3 is matched with the lower die base 61b, when injection molding is completed after the upper die holder 61a3 and the lower die holder 61b are assembled, low temperature generated by the cooling air ring 61a1 is absorbed by the cooling air pipe 61a5 and the cooling spiral ring 61a4, and is quickly and fully transferred to the cooling seat 61a2, because the cooling seat 61a2 is connected with the upper die holder 61a3, the material injected between the upper die holder 61a3 and the lower die holder 61b is quickly cooled and molded in a low-temperature environment, then the upper die holder 61a3 and the lower die holder 61b are driven to be separated under the action of vertical linear motion generated by the lifting rod 61a6, the lower die holder 61b generates linear forward pushing force through the push rods 61d arranged on the two sides, the lower die holder 61b and the support plate 63 turn over forward through the movable structure formed by the hinge 61c, and plastic products fall into the conveyor belt 64 from the lower die holder 61b and are sequentially conveyed forward, so that the cost of manual die taking is reduced.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high efficiency injection molding machine for plastic manufacturing, its structure includes material heating advancing device (1), motor (2), feeder hopper (3), hot melt plastics conveyer pipe (4), braced ring (5), plastic products forming device (6), injection nozzle (7), spacing (8), its characterized in that:

plastic products forming device (6) top be equipped with heat and melt plastics conveyer pipe (4), heat melt plastics conveyer pipe (4) bottom and be equipped with injection nozzle (7), injection nozzle (7) on be equipped with journal ring (5), heat melt plastics conveyer pipe (4) inside be equipped with material heating advancing device (1), heat melt plastics conveyer pipe (4) top and be equipped with motor (2), motor (2) both sides be equipped with feeder hopper (3), spacing (8) central point put and be equipped with heat and melt plastics conveyer pipe (4).

2. The high efficiency injection molding machine for plastic manufacturing of claim 1, wherein: material heating advancing device (1) constitute by heat-conducting ring (11), support (12), louvre (13), heater (14), push mechanism (15), support (12) both sides be equipped with louvre (13), support (12) inside be equipped with heat-conducting ring (11), support (12) bottom be equipped with heater (14), support (12) below be equipped with push mechanism (15).

3. The high-efficiency injection molding machine for plastic production according to claim 2, characterized in that: push mechanism (15) constitute by heat absorption pole (15a), pivot (15b), solid fixed ring (15c), auger delivery pole (15d), central heat conduction pole (15e), anti-flow stopping valve (15f), helical blade heat conduction line (15g), auger delivery pole (15d) top be equipped with pivot (15b), pivot (15b) on be equipped with solid fixed ring (15c), solid fixed ring (15c) top be equipped with heat absorption pole (15a), auger delivery pole (15d) bottom be equipped with anti-flow stopping valve (15f), auger delivery pole (15d) central point put and be equipped with central heat conduction pole (15e), central heat conduction pole (15e) outer lane on be equipped with helical blade heat conduction line (15 g).

4. The high efficiency injection molding machine for plastic manufacturing of claim 1, wherein: the plastic product forming device (6) is composed of an automatic discharging mold (61), a bottom pad (62), a support plate (63), a conveying belt (64) and a base (65), wherein the bottom pad (62) is arranged at the top of the support plate (63), the base (65) is arranged below the support plate (63), the conveying belt (64) is arranged between the base (65) and the support plate (63), and the automatic discharging mold (61) is arranged at the top of the support plate (63).

5. The high-efficiency injection molding machine for plastic production according to claim 4, wherein: automatic row material mould (61) constitute by fast cold die base (61a), die holder (61b), hinge (61c), push rod (61d), fast cold die base (61a) bottom be equipped with die holder (61b), die holder (61b) front end be equipped with hinge (61c), die holder (61b) both sides be equipped with push rod (61 d).

6. The high efficiency injection molding machine for plastic manufacturing of claim 5, wherein: fast cold die holder (61a) by cooling wind ring (61a1), cooling seat (61a2), upper die base (61a3), cooling spiral ring (61a4), cooling tuber pipe (61a5), lifter (61a6) constitute, cooling seat (61a2) bottom be equipped with upper die base (61a3), cooling seat (61a2) top be equipped with cooling wind ring (61a1), be equipped with cooling tuber pipe (61a5) between cooling wind ring (61a1) and cooling seat (61a2), cooling tuber pipe (61a5) outer lane on be equipped with cooling spiral ring (61a4), cooling seat (61a2) top be equipped with lifter (61a 6).