TWM637975U - Multi-station injection blowing machine with thermal insulation injection mold and injection mold thereof - Google Patents

Abstract

The present invention provides a multi-station injection blowing machine with a thermal insulation injection mold, which includes a rotating tool Work table, an injection device, a heating device, a plurality of blowing mandrels, an injection mold, and a forming mold, wherein the injection mold has an upper mold, a lower mold and a hot runner mechanism, the upper mold, the lower mold The mold is connected to a heating device for heat preservation. The upper mold and the lower mold can move between a mold closing position and a mold opening position. The rotary table brings each blowing mandrel to the injection mold, forming mold, and unloading mold. When the blowing mandrel is at the position of the injection mold, the injection device injects the hot-melt plastic between the blowing mandrel and the injection mold, and the bottle blank is formed on the blowing mandrel. , the blowing mandrel with the bottle blank is taken by the rotary table to the forming mold for blowing to form a bottle, and then the blowing mandrel with the bottle is taken by the rotary table to the unloading device for unloading , complete multi-station continuous injection and molding.

Description

Multi-station injection blowing machine with thermal insulation injection mold and its injection mold

The present invention belongs to the field of injection blowing machines, especially multi-station injection blowing machines with thermal insulation injection moulds.

The traditional way of making bottles and cans generally adopts the following methods: 1. Use a storage type blow molding machine to blow bottles and cans. This method has low output and long processing and molding time, and there will be too many times or waste. 2. Use the injection machine to inject the preform and use the second-stage heating preform before blow molding. The equipment cost of this method is more, and the preform after injection must be taken or transported to the blow molding machine. In places, in addition to the lack of continuity in production, it will also increase freight or labor costs. 3. The purpose of the Taiwan New Patent No. 211491 one-stage injection blowing machine is to solve the above problems, but the case cannot truly realize continuous injection blow molding. The reason is that when the hot-melt plastic is injected into the injection mold, due to the temperature of the mold, it cannot The preform is effectively formed on the embryo axis of the injection mold, so when it is sent to the blowing mold for blowing, either it cannot be blown or the quality is poor.

The new model provides a multi-station injection blowing machine with a thermal insulation injection mold, which includes a rotary table, an injection device, a heating device, a plurality of blowing mandrels, an injection mold, a forming mold and a discharge device; the injection mold has an upper mold, a lower mold and a hot runner mechanism, a rail column is arranged on the lower mold, the upper mold has a sliding hole, and the upper mold is sleeved on the rail column with the sliding hole, the The upper mold and the lower mold can move between a mold closing position and a mold opening position; the upper mold is provided with an upper mold channel, the upper mold channel has an upper channel opening, and the upper mold channel is connected to the heating device by the upper channel opening The lower mold is provided with a lower mold passage, the lower mold passage has a lower passage opening, and the lower mold passage is connected to the heating device through the lower passage opening; the hot runner mechanism has a main body, and the main body is provided with an input joint, At least one injection head, a channel is provided in the main body, the channel communicates with the input joint and the injection head, the input joint is connected with the injection device, and the injection head is connected with the injection mold; through the rotary table, each The blowing mandrel is brought to the position of the injection mold, the molding die, and the unloading device. When the blowing mandrel is at the position of the injection mold, the blowing mandrel is between the upper mold and the lower mold, and the injection material The device injects hot-melt plastic between the injection mold and the blowing mandrel, and forms a bottle blank on the blowing mandrel, and the blowing mandrel with the bottle blank is brought to the molding by the rotary table Air is blown in the mold to form a bottle, and then the blowing mandrel with the bottle is taken to the unloading device by the rotary table for unloading.

This model also provides an injection mold of a multi-station injection blowing machine, which accepts hot-melt plastic from an injection device. The injection mold includes a heating device, an upper mold, a lower mold and a hot runner mechanism. The lower mold is provided with a rail column, the upper mold has a sliding hole, and the upper mold is sleeved on the rail column through the sliding hole, and the upper mold and the lower mold can move between a mold closing position and a mold opening position ; The upper mold is provided with an upper mold passage, the upper mold passage has an upper passage opening, and the upper mold passage is connected to the heating device by the upper passage opening; the lower mold is provided with a lower mold passage, and the lower mold passage has a lower passage The lower mold channel is connected to the heating device through the lower channel port; the hot runner mechanism has a main body, an input joint and at least one injection head are arranged on the main body, and a channel is provided in the main body, and the channel communicates with the An input joint and the injection head, the input joint is connected with the injection device, and the injection head is connected with the injection mold.

The new model utilizes the multi-station method, uses the rotary table to send the blowing mandrel to the injection mold, the forming mold and the unloading mold, and the three stations work at the same time, and uses the thermal insulation injection mold of the first station to hold the bottle The preform temperature is convenient for the forming mold of the second station to blow the preform into shape, and then use the unloading device to quickly and automatically take out the material. The manpower and cost of transportation, and the use of injection mold heating and heat preservation control can truly complete multi-station continuous injection and blow molding.

In order to enable your examiners to have a better understanding of the features and characteristics of the new model, the following preferred embodiments are listed below and illustrated as follows: As shown in Figure 1, it is a multi-station with a thermal insulation injection mold of the new model Injection blowing machine 100, the figure of present embodiment then adopts three stations, and it comprises a rotary table 10, a heating device 20, a plurality of blowing mandrels 30, an injection mold 40, a forming mold 50, an unloading mold. material device 60, a material injection device 80 and a cooling device 90, in which the bottle blank is obtained through the injection mold 40, after the bottle blank is blown into the forming mold 50, the finished product is taken out by the unloading device 60 and other three processes bit.

Please refer to FIG. 1 , in one embodiment, the rotary table 10 can not only rotate but also stop at a fixed point, and the rotary table 10 can move between a raised position and a lowered position. In another embodiment, the rotary table 10 also includes a lifting power mechanism (not shown) to drive the rotary table 10 to rise and fall; and includes a rotary power mechanism (not shown) to drive the rotary work The platform rotates; also includes a control system 70 to control the starting, running and all operations of all elements of this creation; the aforementioned lifting power mechanism and rotating power mechanism can be selected from general traditional mechanisms, and will not be repeated here. In one embodiment, the rotary table 10 adopts a triangular structure (viewed from a top view), which has three sides 11. Fig. 1 shows a three-station injection blowing machine, therefore, each side of the rotary table 10 corresponds to A station of a jet blowing machine.

In one embodiment, the heating device 20 has an adapter 29, the heating device 20 can supply heated kerosene as the heat source of this case, and use a pipeline (not shown) to send the hot kerosene to the adapter 29, provide hot kerosene by adapter 29, and this adapter 29 is then arranged on the rotary table 10. In an embodiment, the heating device 20 is an oil temperature machine, and the temperature of the hot kerosene is controlled between 120°C-180°C.

In one embodiment, each blowing mandrel 30 is installed horizontally on the side 11 of the rotary table 10, and protrudes axially from the side 11 of the table, and each blowing mandrel 30 passes through the pipeline 21 A heat source is obtained by connecting the adapter 29 of the heating device 20 . Since these air blowing mandrels 30 adopt conventional technology, their structure and technical features will not be repeated here.

In addition, in the embodiment, two blowing mandrels 30 are provided on the side 11 of each workbench, and a mandrel adapter block 31 is provided on the side 11 of each workbench, and the air blowing mandrel 30 is arranged on the side 11 of each worktable. The mandrel 30 is fixed on the edge 11 of the workbench. In addition to increasing the effective stability, it also plays a role in fixing the central axis of the blowing mandrel 30, and allows the central axis of the blowing mandrel 30 to be accurate without deviation .

In one embodiment, the injection device 80 of the present invention provides hot-melt plastics for the injection mold 40 , such as including but not limited to PC, Tritan, etc., and its structure and features are conventional technologies and will not be described in detail.

Please refer to Fig. 1-shown in Fig. 5, in one embodiment, this injection mold 40 then has a upper mold 41, lower mold 42 and a hot runner mechanism 43, and this upper mold 41 is provided with upper mold cavity 411, and lower mold 42 is then provided with lower mold cavity 421, and this upper mold cavity 411 and this lower mold cavity 421 are in relative position, is provided with a group of rail column 44 between this upper mold 41 and this lower mold 42, and this rail column 44 is located at the lower mold 42, and the upper mold 41 has a slide hole 415 for being sleeved on the rail column 44, whereby the upper mold 41 is movably slid on the rail column 44, so that the upper mold 41 can be placed on a Move between the mold closing position and a mold opening position. When in the mold closing position, the upper mold 41 is in contact with the lower mold 42, and the upper mold cavity 411 and the lower mold cavity 421 are closed. When in the mold opening position, the upper mold 41 is separated from the lower mold 42, and the upper mold cavity 411 and the lower mold cavity 421 are opened. In addition, a material supply opening 45 is provided between the upper mold cavity 411 and the lower mold cavity 421 , through the material supply opening 45 , when the upper mold cavity 411 and the lower mold cavity 421 are closed, the inside can communicate with the outside.

In addition, in one embodiment, the upper mold 41 is provided with an upper mold passage 413 and a plurality of upper passage openings 414, and these upper passage openings 414 communicate with the upper mold passage 413, through which the upper passage openings 414 are connected with pipelines ( Not shown in the figure) connects the heating device 20, and the hot kerosene that is supplied by the heating device 20 allows the temperature of the upper mold 41 to remain between 120°C-180°C.

In one embodiment, the lower mold 42 is provided with a lower mold passage 423 and a plurality of lower passage openings 424, and these lower passage openings 424 communicate with the lower mold passage 423, through which the lower passage openings 424 are connected to pipelines ( (not shown in the figure) is connected to the heating device 20, and the heating device 20 supplies hot kerosene to the lower mold channel 423, so that the temperature of the lower mold 42 is kept between 120°C-180°C.

Moreover, the blowing mandrel 30 is deep in the space formed by the upper mold cavity 411 and the lower mold cavity 421, and there is a gap 46 between them to accommodate the hot-melt plastic. After the upper mold 41 and the lower mold 42 are separated , these plastics will be coated on the outer surface of the blowing mandrel 30, and become the bottle blank before blowing, and then sent to the molding die 50 by the rotary table 10 for blow molding.

In one embodiment, the hot runner mechanism 43 includes a main body 431, an input joint 432 and two injection heads 433; wherein, the main body 431 is provided with a channel 434, and FIG. 5 only shows a part of the structure of the channel 434. The two injection heads 433 communicate with the input joint 432 through the channel 434, and the input joint 432 is connected to the injection device 80, and the two injection heads 433 are connected to the feed port 45 of the injection mold 40, through which the thermal casting The channel mechanism 43 can evenly and stably supply the hot-melt plastic from the injection device 80 to the injection mold 40 . In addition, an electric heating tube 436 is embedded in the main body 431, through which the hot runner mechanism 43 is heated, and the temperature of the hot runner mechanism 43 is kept at 250°C-320°C.

Please refer to Fig. 1, Fig. 6-shown in Fig. 11, the cooling device 90 of the present invention mainly supplies cold water or ice water to the molding die 50, so that the temperature of the molding die 50 is maintained at 50°C-80°C. In an embodiment, the cooling device 90 adopts an oil-type or water-type mold temperature controller.

In one embodiment, the forming die 50 has a forming upper die 51, a forming lower die 52, and a bottom die mechanism 54. The forming upper die 51 is concavely provided with two first mold cavities 511. The first die The bottom of the cavity 511 is connected with an upper bottom mold cavity 516, and the rear end of the upper bottom mold cavity 516 communicates with the outside of the forming upper mold 51, and the forming upper mold 51 is provided with sliding holes 512 passing through the upper and lower sides on both sides of the rear side. The forming upper mold 51 is provided with an upper mold runner 513, and the upper mold runner 513 has a plurality of upper pipe interfaces 514, and these upper pipe interfaces 514 are arranged on both sides of the outer surface of the molding upper mold 51, and the upper pipe The interface 514 communicates with the upper mold flow channel 513, and the upper pipe interface 514 is connected to the cooling device 90 with a pipeline (not shown). In the embodiment, the cooling device 90 provides ice water to the upper mold flow channel 513 for forming The temperature of the upper mold 51 is lowered and kept between 50°C and 80°C.

In the embodiment, the forming lower mold 52 is concavely provided with two second mold cavities 521, and the bottom end of the second mold cavity 521 is connected with a lower bottom mold cavity 526, and the rear end of the lower bottom mold cavity 526 is connected with the forming lower mold. 52 communicates with the outside, the two second mold cavities 521 are set opposite to the two first mold cavities 511 of the forming upper mold 51, and a set of sliding columns 53 are arranged on both sides of the rear side of the forming lower mold 52. The sliding column 53 is sleeved for the sliding hole 512 of the forming upper mold 51, whereby the forming upper mold 51 is movably slid on the sliding column 53, so that the forming upper mold 51 can be in a mold closing position and a Move between mold opening positions. When in the mold closing position, the molding upper mold 51 contacts the molding lower mold 52, and the first mold cavity 511 and the second mold cavity 521 are closed. When in the mold opening position, the molding The upper mold 51 is separated from the forming lower mold 52, and the first mold cavity 511 and the second mold cavity 521 are opened.

In the embodiment, the forming lower mold 52 is provided with a lower mold flow channel 523, and the lower mold flow channel 523 has a plurality of lower pipe interfaces 524, and these lower pipe interfaces 524 are arranged on both sides of the outer surface of the forming lower mold 52, And the lower pipe interface 524 communicates with the lower mold flow channel 523, and the lower pipe interface 524 is connected to the cooling device 90 with a pipeline (not shown), and the cooling device 90 provides ice water to the lower mold flow channel 523, The temperature of the forming lower mold 52 is lowered and maintained at 50°C-80°C.

In one embodiment, the bottom mold mechanism 54 includes a bottom module 541 , a sliding block 542 , a trigger block 543 , and a spring 544 .

The aforementioned bottom module 541 is a cylindrical block, one side of which is a circular convex surface 546, and the other side is a plane 545. This bottom module 541 is movably arranged at the position of the lower bottom mold cavity 526 of the forming lower mold 52; the slide block 542 It has an upper inclined surface 547 and a rail pin 548. The slider 542 is fixed on the plane 545 of the bottom module 541. In addition, the lower mold 52 is provided with a rail hole 549 and a spring hole 5441. The rail The hole 549 is for sliding the rail pin 548, the spring hole 5441 is for accommodating the spring 544, and one end of the spring 544 protrudes Out of the spring hole 5441 and abut against the slider 542, the spring 544 is a compression spring, the rail pin 548 slides in the rail hole 549, so that the slider 542 can move back and forth in a straight line, and can drive the bottom module 541 linearly moves back and forth in the bottom mold cavity 526; the touch block 543 is fixed on the rear side of the forming upper mold 51 and is opposite to the slide block 542, and the touch block 543 has a corresponding slope 547 on the slide block 542. Inclined surface 540, when forming the upper mold 51 in the mold opening position (see Figure 13), the touch block 543 is far away from the slide block 542, at this time the spring 544 is in the energy release state, and pushes the bottom module 541 backwards, when the upper mold is formed When the mold 51 is at the clamping position (see FIG. 12 ), the lower slope 540 of the touch block 543 contacts and pushes the upper slope 547 of the slider 542 to move the slider 542 forward (the right side of the figure), and drives the bottom module 541 Move forward, at this time spring 544 is compressed and stored energy, when the upper mold 51 for forming is moved up to the mold opening position, this spring 544 releases energy and slide block 542 is pushed back, and bottom module 541 returns to original state.

In the embodiment, the blowing mandrel 30 goes deep into the space formed by the first mold cavity 511, the second mold cavity 521 and the bottom module 541, and there is a gap 56 therebetween, and the previous station has a bottle embryo The blowing mandrel 30 of the material is then brought into the gap 56 by the rotary table 10 for blow molding. In addition, one side of the bottom module 541 is set as a rounded convex surface, which can shape the bottom of the bottle into an inwardly convex shape, and when the mold is opened, the bottom module 541 can move to the rear side to remove the blow molding. 85 for the bottle.

Please refer to Fig. 1 and shown in Fig. 4, the unloading device 60 in the present invention comprises a material taking plate 61, and this material taking plate 61 is subjected to a driving device (not shown) and can move linearly back and forth, and this material taking The plate 61 is provided with two grooves 62, and the driving device belongs to the known technology and will not be described in detail.

The above is an introduction to the various components and assembly methods of a multi-station injection blowing machine 100 with a thermal insulation injection mold provided by an embodiment of the present invention, and then its use characteristics are described as follows: Please refer to Figure 1, Figure 12 and Figure 1. As shown in 13, the present invention uses the rotation of the rotary table 10 to send each blowing mandrel 30 of the three stations to the positions of the injection mold 40, the forming mold 50 and the unloading device 60 in sequence. The sequence is to first move the upper mold 41 of the injection mold 40 and the forming upper mold 51 of the forming mold 50 upward by a power (not shown), and the rotary table 10 rises and rotates to move each blowing mandrel separately. 30 to the injection mold 40, The position of the forming mold 50 and the unloading device 60, and then the rotary table 10 descends, and the respective blowing mandrels 30 are moved to the lower mold 42 of the injection mold 40, the forming lower mold 52 of the forming mold 50, and the unloading device 60 In the groove 62 of the take-up plate 61 of the material, then the upper mold 41 of the injection mold 40 is lowered, and the molding upper mold 51 of the forming mold 50 is lowered to be mold-closed.

In the initial first station, the injection device 80 is used to inject pre-heated plastics such as PC, Tritan, etc. into the hot runner mechanism 43, and the plastic is sent to the injection mold through the hot runner mechanism 43. The feed port 45 of 40 enters the injection mold 40, and the plastic will fill the gap 46 between the injection mold 40 and the blowing mandrel 30 to form the blank of the predetermined shape, and because the injection mold 40 has the function of heat preservation , the temperature is set between 120°C and 180°C, so that the billet can be formed and kept at a temperature suitable for blowing. After the blank is obtained, it is sent to the aforementioned second station molding die 50, and air is blown to the blowing mandrel 30 of the station. When blowing air, the blank is immediately blown by the gas and attached to the molding die 50 to form a predetermined shape. In this station, the cooling device 90 then provides ice water in a timely manner for cooling. For some materials such as Tritan It can be formed under rapid cooling without deformation, so as to obtain high-quality bottle 85 finished products. Fig. 15 shows a schematic view of moving to the unloading device 60 after blow molding, wherein the bottle 85 has a body 851 and a head 852 extends from the body 851, and the blowing mandrel 30 is still in the bottle 85 , the head 852 of the bottle 85 is in the groove 62 of the take-off plate 61 of the unloading device 60. Since the outer diameter of the bottle body 851 is greater than the inner diameter of the groove 62, when discharging, the take-off plate 61 is driven by an external force Move outward, just bottle 85 can be taken off (as shown in Figure 16), repeat above-mentioned process again, and can obtain bottle 85 finished product very quickly, and there is no waste material in the process completely.

The above disclosures are only the preferred embodiments provided by the present model, and are not intended to limit the scope of implementation of the present model. All equivalent changes made by those skilled in the art according to the present model shall belong to the present model. range covered.

100: Multi-station injection blowing machine with thermal insulation injection mold

10:Rotary table

20: Heating device

30: blowing mandrel

40: Injection mold

50: Forming mold

60: Unloading device

80: Injection device

90: cooling device

70: Control system

11: side

29: Adapter

21: pipeline

31: Mandrel adapter block

41: upper mold

42: Lower mold

43:Hot runner mechanism

411: upper mold hole

421: Lower mold cavity

44: rail column

415: sliding hole

45: feed port

413: upper mold channel

414: up channel

423: Lower mold channel

424: down channel

46: Gap

56: Gap

431: subject

432: input connector

433: injection head

434: channel

436: electric heating tube

54: Bottom mold mechanism

51: forming upper mold

52: Forming the lower mold

511: The first cavity

516: upper bottom mold cavity

512: sliding hole

513: upper mold runner

514: Upper pipe interface

521: Second cavity

526: Bottom mold cavity

53: Sliding column

523: Lower mold runner

524: down tube interface

541: Bottom module

542:Slider

543:Touch block

544: spring

546: Convex

545: plane

547: upper bevel

548: rail pin

549: rail hole

5441: spring hole

540: lower bevel

85: bottle

61: Pick-up plate

62: Groove

851: bottle body

852: head

Figure 1 is a top view schematic diagram of the new multi-station injection blowing machine with thermal insulation injection mold. Figure 2 is a schematic diagram of most of the injection mold in the new model. Fig. 3 is the front view of the injection mold in the new model. It includes a blowing mandrel and a mandrel adapter block. Fig. 4 is the top view diagram of the combination of the lower mold and the blowing mandrel of the injection mold in the new model. Fig. 5 is a schematic cross-sectional view of a part of the combination of the injection mold and the blowing mandrel in the present invention. Fig. 6 is most of the schematic diagrams of the molding die in the present invention. Fig. 7 is the front view of forming die in the present model. It includes a blowing mandrel and a mandrel adapter block. Fig. 8 is a top view schematic diagram of the combination of the forming lower die and the blowing mandrel of the forming die in the present invention. Fig. 9 is a schematic sectional view of a part of the combination of the forming die and the blowing mandrel in the present invention. Fig. 10 and Fig. 11 are two state schematic diagrams of the new middle bottom mold mechanism. Fig. 12 and Fig. 13 are the schematic diagrams of two different states of the injection mold, the forming mold and the rotary table in the present invention. Fig. 14 is the front schematic diagram of the material taking plate in the new type. Fig. 15 is a schematic cross-sectional view between the middle blowing mandrel of the present invention and the bottle after blowing is completed. Fig. 16 is the bottle appearance schematic diagram that obtains in the present model.

100: Multi-station injection blowing machine with thermal insulation injection mold

10:Rotary table

20: Heating device

30: blowing mandrel

40: Injection mold

50: Forming mold

80: Injection device

90: cooling device

70: Control system

11: side

29: Adapter

21: pipeline

31: Mandrel adapter block

43:Hot runner mechanism

432: input connector

433: injection head

60: Unloading device

46: Gap

56: Gap

Claims (8)

A multi-station injection blowing machine with a thermal insulation injection mold, including: a rotary table, which can be driven to rotate and stop at a fixed point, and the rotary table can be between a raised position and a lowered position Mobile, the rotary table has a plurality of sides; an injection device, the injection device provides hot-melt plastic; a heating device to supply hot kerosene, the heating device has an adapter; a plurality of blowing mandrels , the plurality of blowing mandrels are evenly distributed and installed on each side of the rotary table, and these blowing mandrels protrude horizontally and axially from the side of the rotary table, and each blowing mandrel is connected to the heating The adapter of the device, the blowing mandrels include a mandrel adapter block, which is fixed on the side of the rotary table by the mandrel adapter block; an injection mold, the injection mold has an upper mold, a lower mold and A hot runner mechanism, a rail column is arranged on the lower mold, the upper mold has a sliding hole, and the upper mold is sleeved on the rail column through the sliding hole, and the upper mold and the lower mold can be clamped in one position and mold opening position; the upper mold is provided with an upper mold channel, the upper mold channel has an upper channel opening, and the upper mold channel is connected to the heating device by the upper channel opening; the lower mold is provided with a lower mold channel, The lower mold channel has a lower channel opening, and the lower mold channel is connected to the heating device through the lower channel opening; the hot runner mechanism has a main body, and the main body is provided with an input joint and at least one injection head. There is a channel, the channel is connected to the input joint and the injection head, the input joint is connected to the injection device, the injection head is connected to the injection mold; a forming mold, the forming mold has a forming upper mold and a forming lower mold, the forming The upper mold and the forming lower mold can move between a mold opening position and a mold closing position; a discharge device; Bring each blowing mandrel to the position of the injection mold, the molding die, and the unloading device by the rotary table, and when the blowing mandrel is at the position of the injection mold, the blowing mandrel is blown by the blowing mandrel Between the upper mold and the lower mold, the injection device injects the hot-melt plastic between the injection mold and the blowing mandrel, and the bottle blank is formed on the blowing mandrel, and the rotary table The blowing mandrel with the bottle blank is taken to the molding die to blow air to form a bottle, and then the rotary table takes the blowing mandrel with the bottle to the unloading device for unloading. According to the multi-station injection blowing machine with thermal insulation injection mold described in item 1 of the patent scope of the application, an electric heating tube is arranged in the main body of the hot runner mechanism. The multi-station injection blowing machine with thermal insulation injection mold as described in item 1 or item 2 of the patent application scope, wherein the temperature of the hot runner mechanism is kept at 250°C-320°C. The multi-station injection blowing machine with thermal insulation injection mold as described in item 1 of the scope of application, wherein the temperature of the hot kerosene is 120°C-180°C. According to the multi-station injection blowing machine with thermal insulation injection mold described in item 1 of the scope of the patent application, the unloading device includes a pick-up plate, and the pick-up plate is provided with grooves. An injection mold of a multi-station injection blowing machine accepts hot-melt plastic provided by an injection device. The injection mold includes a heating device, an upper mold, a lower mold and a hot runner mechanism. There is a rail column, the upper mold has a sliding hole, the upper mold is sleeved on the rail column through the sliding hole, the upper mold and the lower mold can move between a mold closing position and a mold opening position; An upper mold channel is provided, and the upper mold channel has an upper channel opening, and the upper mold channel is connected to the heating device through the upper channel opening; a lower mold channel is provided in the lower mold, and the lower mold channel has a lower channel opening, and the lower mold channel The mold channel is connected to the heating device through the lower channel port; the hot runner mechanism has a main body, which is provided with an input joint and at least one injection head, and a channel is provided in the main body, and the channel communicates with the input joint and the An injection head, the input joint is connected with the injection device, and the injection head is connected with the injection mold. The injection mold of the multi-station injection blowing machine as described in item 6 of the scope of the patent application, wherein an electric heating tube is arranged in the main body of the hot runner mechanism. The injection mold of the multi-station injection blowing machine as described in item 6 or item 7 of the patent scope, wherein the temperature of the hot runner mechanism is kept at 250°C-320°C.

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