Die head injection device

Abstract

A die head material injection device comprises a material injection mechanism assembly, the material injection mechanism assembly comprises a material pushing ejector rod lower fixing disc, a set of material pushing ejector rods, a molten material transition disc, a flow dividing disc, a flow guiding sleeve material guiding disc, an inner flow guiding sleeve, a middle flow guiding sleeve and an outer flow guiding sleeve, and the molten material transition disc is located below the material pushing ejector rod lower fixing disc; a first melt through hole of the melt transition disc and a second melt through hole of the melt transition disc are formed in the melt transition disc, the flow dividing disc is located below the melt transition disc, and a first melt semi-arc flow dividing groove of the transition disc and a second melt semi-arc flow dividing groove of the transition disc are formed in the upward side of the melt transition disc; the lower end of the middle flow guide sleeve extends below the inner flow guide sleeve and the outer flow guide sleeve; and the longitudinal section of the lower end of the middle flow guide sleeve is rhombic. The material storage barrel has the advantages that two different molten materials can be well introduced into the material storage cavity of the material storage barrel, the uniform blending requirement of the two different molten materials is met, and the quality of a container needing to be subjected to blow-up forming is guaranteed.

Description

Technical Field

[0001] The utility model relates to a die head material injection device, specifically a device matched with the die head of a blow molding machine to provide molten material for a material storage cylinder, belonging to the technical field of hollow blow molding machines. Background Art

[0002] The aforementioned hollow plastic blow molding machine is equipment for processing hollow plastic containers, and is widely seen in Chinese patent literature, such as CN201941151U (plastic container fully automatic blow molding machine) and CN202162995U (large plastic container fully automatic blow molding machine), etc.

[0003] As is known in the industry, the die head is an indispensable and important part of the structural system of the blow molding machine, and can even be called the core part. There is also a lot of technical information related to the die head structure of the blow molding machine in the public Chinese patent documents, such as CN111791458A (double-layer die head structure of blow molding machine), CN106003665B (double-layer guide groove storage type die head device of blow molding machine) and CN110843190A (three-layer guide groove storage type die head device of blow molding machine), etc.

[0004] Composite hollow bulk containers, commonly known as IBC barrels, are popular because they have a high reuse rate and have the advantage of significantly reducing costs in filling, storage and transportation. Compared with round barrels, IBC barrels can save more than 30% of storage space. In addition, the size of IBC barrels is usually based on ISO standards, static empty barrels can be stacked in multiple layers, and can be transported in logistics links such as transportation without picky factors.

[0005] In the past, the inner liner of IBC barrels usually uses a single high-density polyethylene, the outer sheath is a metal frame or a galvanized steel pipe welded grid structure, and the base uses a four-way (front, back, left, right) all-steel tray, which has the characteristics of stable placement. There is also a discharge valve at the bottom of the IBC barrel to remove the remaining (residue) inside the container as needed.

[0006] In order to improve the physical and chemical properties of high molecular weight polyethylene containers, HMWPE4261A / BASF (BASF) materials, i.e. high molecular weight polyethylene and thermoplastic high density polyethylene resin, are usually used as the materials for IBC barrels. In order to obtain hollow plastic containers (i.e. IBC barrels) made of this material, a die head with a corresponding structure is required, that is, the injection mechanism of the die head structure system ensures that the two different materials enter the storage cavity in parallel through their respective flow channels in their respective proportions to achieve blending, and then extrude the molten blank from the die head into the mold of the blow molding machine, and the blowing mechanism (also called blowing mechanism or blowing needle mechanism) of the blow molding machine blows the blank in the above mold into an IBC container.

[0007] The "double-layer guide storage die structure for blow molding machines" recommended in CN106003665B mentioned above can achieve the three technical effects summarized in paragraph 0019 of its specification, especially by providing a pair of intermediate guide sleeve guide grooves and inner guide sleeve guide grooves spaced 180° apart on the intermediate guide sleeve and the inner guide sleeve, respectively, so that the plastic melt is divided into inner and outer layers and led to the storage barrel cavity, thereby ensuring the uniformity of the wall thickness of the plastic melt and finally making the wall thickness of the hollow plastic container formed by inflation uniform. However, there are the following shortcomings: since this patent is designed to meet the different material requirements of the inner and outer walls of the container to be processed (i.e., the final inflation-molded container), the lower part of the intermediate guide sleeve in the height direction of the structural system of the injection mechanism is designed to be significantly indented between the inner and outer guide sleeves to ensure that the plastic melt is formed by two different materials. The melt (melted and extruded by the screw extruder) flows into the barrel cavity of the storage barrel along the outer wall of the inner guide sleeve and the inner wall of the outer guide sleeve after leaving the lower part of the middle guide sleeve and the area between the inner and outer guide sleeves. However, this structural design of the inner, middle and outer guide sleeves is not effective for the situation where two different materials need to be blended evenly. The so-called blending evenly situation is just the opposite of the above, making the melts of the two different materials flow downward from the melt flow gap between the inner wall of the middle guide sleeve and the outer wall of the inner guide sleeve and from the melt gap between the outer wall of the middle guide sleeve and the inner wall of the outer guide sleeve respectively, and the two melts flow away from the lower part of the inner and outer guide sleeves and then follow the middle guide sleeve to enter the barrel cavity of the storage barrel in a state of uniform blending, so as to make the two melts show a good mixing effect in the barrel cavity as much as possible. Therefore, it is necessary to make a substantial change in the structural relationship between the inner, middle and outer guide sleeves. Summary of the invention

[0008] The utility model aims to provide a die head injection device which is helpful to evenly blend two different molten materials to meet the quality requirements of the container to be blown.

[0009] The task of the utility model is accomplished in this way. A die head ejection device includes an ejection mechanism assembly, which includes a lower fixed plate of a ejector rod, a group of ejector rods, a molten material transition plate, a diverter plate, a guide sleeve material guide plate, an inner guide sleeve, an intermediate guide sleeve and an outer guide sleeve. A group of ejector rods are spaced apart in the circumferential direction and the lower ends are fixed to the lower fixed plate of the ejector rod. The molten material transition plate is located below the lower fixed plate of the ejector rod. A first molten material transition plate through hole and a second molten material transition plate through hole are provided on the molten material transition plate, which penetrate the thickness direction of the molten material transition plate. The first and second molten material through holes of the molten material transition plate are 180° apart from each other in the circumferential direction of the molten material transition plate. The flow plate is located below the molten material transition plate, and a first molten material semi-circular arc diverter groove and a second molten material semi-circular arc diverter groove of the transition plate are provided on the upper side of the molten material transition plate. The two end portions of the first molten material semi-circular arc diverter groove of the transition plate each form a first molten material outlet hole of the diverter groove, and the two end portions of the second molten material semi-circular arc diverter groove of the transition plate each form a second molten material outlet hole of the diverter groove. The first molten material outlet hole of the diverter groove and the second molten material outlet hole of the diverter groove run through the thickness direction of the diverter groove, the first melt through hole of the molten material transition plate is communicated with the first molten material semi-circular arc diverter groove of the transition plate, and the second melt through hole of the molten material transition plate is communicated with the second molten material semi-circular arc diverter groove of the transition plate The guide sleeve material guide plate is located below the diverter plate and is fixed to the upper end surfaces of the inner guide sleeve, the middle guide sleeve and the outer guide sleeve at the same time. A first molten material outlet hole of the guide sleeve is provided on the guide sleeve material guide plate and at a position corresponding to the first molten material outlet hole of the diverter plate, which runs through the thickness direction of the guide sleeve material guide plate and is communicated with the first molten material outlet hole of the diverter plate. A pair of second molten material outlet holes of the guide sleeve are provided at a position corresponding to the second molten material outlet hole of the diverter plate, which also runs through the thickness direction of the guide sleeve material guide plate and corresponds to the outer side of the first molten material outlet hole of the guide plate in an isolated state and is communicated with the second molten material outlet hole of the diverter plate. The inner guide sleeve is accommodated in the middle guide sleeve cavity of the middle guide sleeve. A pair of inner guide sleeve herringbone guide grooves are formed on the outer wall of the flow sleeve, the positions of which correspond to each other front and back and are recessed in the outer surface of the inner guide sleeve. A longitudinal feeding groove of the inner guide sleeve herringbone guide groove, which is communicated with the inner guide sleeve herringbone guide groove and is used to introduce the melt into the inner guide sleeve herringbone guide groove, is formed above the center position of the pair of inner guide sleeve herringbone guide grooves. A group of material storage core scraping cleaning ribs are formed in a spaced state at the lower part of the cavity wall of the inner guide sleeve cavity of the inner guide sleeve and around the circumferential direction of the cavity wall of the inner guide sleeve cavity. The middle guide sleeve is accommodated in the outer guide sleeve cavity of the outer guide sleeve. A pair of middle guide sleeve herringbone guide grooves are formed on the outer wall of the middle guide sleeve, the positions of which correspond to each other front and back and are recessed in the outer surface of the middle guide sleeve.A pair of intermediate guide sleeve herringbone guide grooves are formed above the center position of the intermediate guide sleeve herringbone guide groove, which is used to introduce the melt into the intermediate guide sleeve herringbone guide groove. The second molten material outlet hole of the guide plate corresponds to and communicates with the longitudinal feed groove of the intermediate guide sleeve herringbone guide groove, wherein a melt bypass notch is provided on the upper surface of the intermediate guide sleeve and at a position corresponding to the longitudinal feed groove of the intermediate guide sleeve herringbone guide groove. The melt bypass notch is connected to the intermediate guide sleeve herringbone guide groove. The first molten material outlet hole of the guide plate corresponds to and is communicated with the first molten material outlet hole of the guide plate and the longitudinal feed groove of the herringbone guide groove of the inner guide sleeve. The outer guide sleeve is accommodated in the storage barrel cavity of the storage barrel in the use state. A group of storage barrel inner wall scraping cleaning ribs that are in contact with the cavity wall of the storage barrel cavity are formed in a spaced state at the lower part of the outer wall of the outer guide sleeve and around the circumferential direction of the outer guide sleeve; the lower end of the middle guide sleeve extends to the lower part of the inner and outer guide sleeves and the longitudinal section of the lower end of the middle guide sleeve is in a rhombus shape.

[0010] In a specific embodiment of the present utility model, in the group of pusher rods, a first melt introduction hole of the pusher rod is opened in the middle of the height direction of the pusher rod corresponding to the first melt through-hole of the melt transition plate, and the first melt introduction hole of the pusher rod is communicated with the first melt through-hole of the melt transition plate through the first melt longitudinal center feed hole of the pusher rod opened at the center position of the pusher rod, and a second melt introduction hole of the pusher rod is opened in the middle of the height direction of the pusher rod corresponding to the second melt through-hole of the melt transition plate, and the second melt introduction hole of the pusher rod is communicated with the second melt through-hole of the melt transition plate through the second melt longitudinal center feed hole of the pusher rod opened at the center position of the pusher rod.

[0011] In another specific embodiment of the present invention, the first melt introduction hole of the push rod and the second melt introduction hole of the push rod are on the same horizontal plane.

[0012] In another specific embodiment of the utility model, a material storage core passing hole of the lower fixed plate of the pusher rod is formed in the central position of the lower fixed plate of the pusher rod, a material storage core passing hole of the molten material transition plate is formed in the central position of the molten material transition plate, a material storage core passing hole of the diverter plate is formed in the central position of the diverter plate, and a material storage core passing hole of the guide sleeve guiding plate is formed in the central position of the guide sleeve guiding plate, and the upper end surface of the inner guide sleeve, the guide sleeve guiding plate, the diverter plate, the molten material transition plate and the lower fixed plate of the pusher rod are sequentially stacked from bottom to top.

[0013] In another specific embodiment of the utility model, the diameters of the material storage core passing hole of the fixed plate under the push rod, the material storage core passing hole of the molten material transition plate, the material storage core passing hole of the diverter plate, the material storage core passing hole of the guide sleeve guide plate and the inner guide sleeve cavity of the inner guide sleeve are the same.

[0014] In another specific embodiment of the utility model, the gap formed between the outer wall of the inner guide sleeve and the inner wall of the middle guide sleeve constitutes a first molten material flow channel, and the gap formed between the outer wall of the middle guide sleeve and the inner wall of the outer guide sleeve constitutes a second molten material flow channel; the space in the lower part of the storage barrel cavity of the storage barrel constitutes a storage barrel storage cavity.

[0015] In a more specific embodiment of the present invention, an inner guide sleeve fixing screw, a middle guide sleeve fixing screw and an outer guide sleeve fixing screw are arranged on and around the guide sleeve guiding plate at intervals. The middle guide sleeve fixing screw is located on the outside of the inner guide sleeve fixing screw, and the outer guide sleeve fixing screw is located on the outside of the middle guide sleeve fixing screw.

[0016] In a further specific embodiment of the present invention, inner guide sleeve fixing screw holes corresponding to the inner guide sleeve fixing screws are provided at intervals around the inner guide sleeve on the upper surface of the inner guide sleeve, inner guide sleeve fixing screw holes corresponding to the intermediate guide sleeve fixing screws are provided at intervals around the intermediate guide sleeve, intermediate guide sleeve fixing screw holes corresponding to the intermediate guide sleeve fixing screws are provided at intervals around the intermediate guide sleeve, and outer guide sleeve fixing screw holes corresponding to the outer guide sleeve fixing screws are provided at intervals around the outer guide sleeve, the inner guide sleeve fixing screws are fixed to the inner guide sleeve fixing screw holes, the intermediate guide sleeve fixing screws are fixed to the intermediate guide sleeve fixing screw holes, and the outer guide sleeve fixing screws are fixed to the outer guide sleeve fixing screw holes.

[0017] In yet another specific embodiment of the present invention, a guide sleeve material guide plate inner fixing screw, a diverter plate fixing screw and a guide sleeve material guide plate outer fixing screw are arranged on and around the lower fixing plate of the pusher push rod at intervals, the diverter plate fixing screw is located on the outside of the guide sleeve material guide plate inner fixing screw, and the guide sleeve material guide plate outer fixing screw is located on the outside of the diverter plate fixing screw, and the molten material transition plate inner fixing screw through holes corresponding to the guide sleeve material guide plate inner fixing screws, the molten material transition plate middle screw through holes corresponding to the diverter plate fixing screws and the molten material transition plate outer transition screw through holes corresponding to the guide sleeve material guide plate outer fixing screws are arranged on the diverter plate at intervals around the diverter plate The screw holes for fixing the diverter plate and the outer transition screw holes for fixing the diverter plate corresponding to the nails and the outer transition screw holes for fixing the diverter plate corresponding to the outer fixing screws of the diverter plate; the inner fixing screw holes for fixing the diverter plate and the outer fixing screw holes for fixing the diverter plate corresponding to the outer fixing screws of the diverter plate are arranged at intervals around the diverter plate around the diverter plate, the inner fixing screws of the diverter plate pass through the inner fixing screw holes of the molten material transition plate and the inner fixing screw holes of the diverter plate in sequence from top to bottom, and then are screwed into the inner fixing screw holes of the diverter plate, the diverter plate fixing screw passes through the middle screw holes of the molten material transition plate from top to bottom, and then is screwed into the fixing screw holes of the diverter plate, the outer fixing screws of the diverter plate are screwed into the outer transition screw holes of the molten material transition plate and the outer transition screw holes of the diverter plate in sequence from top to bottom, and then are screwed into the outer fixing screw holes of the diverter plate.

[0018] In yet another specific embodiment of the present invention, a diverter plate inner ring fixing screw and a diverter plate outer ring fixing screw are arranged at intervals on the molten material transition plate and around the circumferential direction of the molten material transition plate, and the diverter plate inner ring fixing screw and the diverter plate outer ring fixing screw are fixed to the diverter plate inner ring fixing screw hole and the diverter plate outer ring fixing screw hole which are opened on the diverter plate and correspond to the diverter plate inner ring fixing screw and the diverter plate outer ring fixing screw respectively; an alignment pin is also arranged on the molten material transition plate, and the upper end of the alignment pin protrudes out of the upper surface of the molten material transition plate and protrudes into the upper insertion hole of the alignment pin opened on the lower fixing plate of the push rod, while the lower end of the alignment pin protrudes out of the lower surface of the molten material transition plate and protrudes into the lower insertion hole of the alignment pin opened on the diverter plate.

[0019] The technical effect of the technical solution provided by the utility model is as follows: since a pair of inner guide sleeve herringbone guide grooves and a pair of middle guide sleeve herringbone guide grooves are respectively provided on the outer walls of the inner guide sleeve and the middle guide sleeve in the structural system of the injection mechanism assembly and at corresponding front and rear positions, and the lower end of the middle guide sleeve is extended to below the inner and outer guide sleeves and the longitudinal cross-section shape of the lower end is designed to be diamond-shaped, it is possible to well introduce two different molten materials into the storage barrel storage cavity of the storage barrel, meet the requirement of uniformly blending the two different molten materials, and ensure the quality of the container to be blown. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an assembly structure diagram of the injection mechanism assembly of the utility model;

[0021] Figure 2 for Figure 1 An expanded view of the inner guide sleeve shown;

[0022] Figure 3 for Figure 1 Detailed structural diagram of the diverter plate shown;

[0023] Figure 4 This is a schematic diagram of an application example of the injection mechanism assembly of the utility model;

[0024] Figure 5 for Figure 4 Enlarged view of part A. DETAILED DESCRIPTION

[0025] In order to more clearly understand the technical essence and beneficial effects of the present invention, the applicant provides a detailed description in the form of embodiments below. However, the description of the embodiments is not a limitation on the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical solution of the present invention.

[0026] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 4 The position state of the present invention is taken as an example, and therefore it cannot be understood as a special limitation on the technical solution provided by the present invention. In addition, in order to facilitate the interpretation of the present invention, the applicant first Figure 1 Structure and Figure 1 The structure is used for Figure 4 The structure is described together.

[0027] See also Figure 1 and Figure 4, shows a material storage core 1, a material storage barrel 2 and an injection mechanism assembly 3, the material storage barrel 2 is located outside the material storage core 1, more specifically, the material storage core 1 is located in the center of the material storage barrel 2, and a material storage barrel cover 21 is provided at the upper end of the material storage barrel 2, the material storage barrel cover 21 is supported on the material storage barrel cover support platform 213, and a first melt material introduction hole 211 and a second melt material introduction hole 212 of the material storage barrel cover are provided on the material storage barrel cover 21 and around the circumferential direction of the material storage barrel cover 21 at a distance of 180° from each other. In this embodiment, the first melt material mentioned above and to be mentioned below is high molecular weight polyethylene (HMWPE), and the second melt material mentioned above is thermoplastic high density polyethylene resin (HDPE).

[0028] The aforementioned ejection mechanism assembly 3 comprises a lower fixed plate 31 for ejector rods, a group of ejector rods 32, a molten material transition plate 33, a diverter plate 34, a guide sleeve material guide plate 35, an inner guide sleeve 36, an intermediate guide sleeve 37 and an outer guide sleeve 38, a group of ejector rods 32 are spaced apart in the circumferential direction and the upper end is connected to the ejector rods 32 by the ejector rods 33. Figure 4The push rod driving mechanism 4 shown in the figure is connected, and the lower end is fixed to the lower fixed plate 31 of the push rod after passing through the aforementioned storage barrel cover 21. The molten material transition plate 33 is located below the aforementioned lower fixed plate 31 of the push rod. A molten material transition plate first melt through hole 331 and a molten material transition plate second melt through hole 332 are provided on the molten material transition plate 33, which penetrate (through) the thickness direction of the molten material transition plate 33 (that is, from the upper surface to the lower surface, the same below). The first and second melt through holes 331 and 332 of the molten material transition plate are 180° apart from each other in the circumferential direction of the molten material transition plate 33. The diverter plate 34 is located below the molten material transition plate 33, and a transition plate first melt through hole 331 is provided on the upper side of the molten material transition plate 33. A molten material semicircular arc-shaped diverter groove 341 (also called a C-shaped diverter groove) and a transition plate second molten material semicircular arc-shaped diverter groove 342 (also called a C-shaped diverter groove), the two ends of the first molten material semicircular arc-shaped diverter groove 341 of the transition plate each form a diverter groove first molten material outlet hole 3411, the two ends of the second molten material semicircular arc-shaped diverter groove 342 of the transition plate each form a diverter groove second molten material outlet hole 3421, the diverter groove first molten material outlet hole 3411 and the diverter groove second molten material outlet hole 3421 penetrate the thickness direction of the diverter plate 34, the aforementioned molten material transition plate first melt through hole 331 is connected with the aforementioned transition plate first molten material semicircular arc-shaped diverter groove 341, and the aforementioned molten material transition plate second melt through hole 332 The guide sleeve guide plate 35 is connected to the second molten material semi-circular arc-shaped diverter groove 342 of the transition plate. The guide sleeve guide plate 35 is located below the diverter groove 34 and is fixed to the upper end surfaces of the inner guide sleeve 36, the middle guide sleeve 37 and the outer guide sleeve 38 at the same time. On the guide sleeve guide plate 35 and at a position corresponding to the first molten material outlet hole 3411 of the diverter groove, a first molten material outlet hole 351 of the guide sleeve is provided, which runs through the thickness direction of the guide sleeve guide plate 35 and is connected to the first molten material outlet hole 3411 of the diverter groove. At a position corresponding to the second molten material outlet hole 3421 of the diverter groove, a pair of guide holes 351 of the guide sleeve are provided, which also run through the thickness direction of the guide sleeve guide plate 35 and correspond to the outer side of the first molten material outlet hole 351 of the guide plate in an isolated state and are connected to the first molten material outlet hole 351 of the diverter groove. The second molten material outlet hole 352 of the guide plate is communicated with the second molten material outlet hole 3421. The concept of the isolation state mentioned here refers to that the first and second molten material outlet holes 351 and 352 of the guide plate are separated, that is, they are not communicated with each other. The inner guide sleeve 36 is accommodated in the middle guide sleeve cavity 372 of the middle guide sleeve 37. A pair of inner guide sleeve herringbone guide grooves 361 corresponding to each other in front and back and recessed in the outer surface of the inner guide sleeve 36 are formed on the outer wall of the inner guide sleeve 36. The upper part of the center position of the pair of inner guide sleeve herringbone guide grooves 361 is formed as an inner guide sleeve herringbone guide groove longitudinal feeding groove 3611 for introducing the melt into the inner guide sleeve herringbone guide groove 361.A group of material storage core scraping cleaning ribs 3621 are formed in a spaced state at the lower part of the cavity wall of the inner guide sleeve cavity 362 of the inner guide sleeve 36 and around the circumferential direction of the cavity wall of the inner guide sleeve cavity, which are in contact with (can also be called "contact") the outer wall of the aforementioned material storage core 1; the intermediate guide sleeve 37 is accommodated in the outer guide sleeve cavity 382 of the outer guide sleeve 38; a pair of intermediate guide sleeve herringbone guide grooves 371 are formed on the outer wall of the intermediate guide sleeve 37, which are located front and back and recessed in the outer surface of the intermediate guide sleeve 37; an intermediate guide sleeve herringbone guide groove longitudinal feeding groove 3711 which is communicated with the intermediate guide sleeve herringbone guide groove 371 and is used to introduce the melt into the intermediate guide sleeve herringbone guide groove 371 is formed above the center position of the pair of intermediate guide sleeve herringbone guide grooves 371; the aforementioned second molten material outlet hole 352 of the guide plate is connected to the longitudinal feed groove 371 of the intermediate guide sleeve herringbone guide groove The outer guide sleeve 38 is accommodated in the storage barrel cavity 22 of the storage barrel 2, and a group of storage barrel inner wall scraping cleaning ribs 381 are formed in a spaced state at the lower part of the outer wall of the outer guide sleeve 38 and around the circumferential direction of the outer guide sleeve 38, which are in contact with the cavity wall of the storage barrel cavity 22; the lower end of the aforementioned middle guide sleeve 37 extends to the lower part of the inner and outer guide sleeves 36, 38, and the longitudinal cross-section of the lower end of the middle guide sleeve 37 is in a rhombus shape.

[0029] See you next time Figure 1 and Figure 4In the aforementioned set of pusher pins 32, a first melt introduction hole 321 for the pusher pin is provided in the middle of the height direction of the pusher pin corresponding to the first melt through hole 331 of the aforementioned melt transition plate, and the first melt introduction hole 321 for the pusher pin is communicated with the first melt through hole 331 of the aforementioned melt transition plate through a first melt longitudinal center material introduction hole 3211 for the pusher pin provided at the center position of the pusher pin, and a second melt introduction hole 322 for the pusher pin is provided in the middle of the height direction of the pusher pin corresponding to the second melt through hole 332 of the aforementioned melt transition plate, and the second melt introduction hole 322 for the pusher pin is communicated with the second melt through hole 332 of the aforementioned melt transition plate through a second melt longitudinal center material introduction hole 3221 for the pusher pin provided at the center position of the pusher pin. More specifically, a push rod 32 in a group of push rods 32 corresponding to the first melt introduction hole 211 of the storage barrel cover is provided with a push rod first melt introduction hole 321 at a position corresponding to the first melt introduction hole 211 of the storage barrel cover, and the push rod first melt introduction hole 321 is connected to the push rod first melt longitudinal center introduction hole 3211 at the center of the lower end of the push rod and the melt transition plate 33 and the melt transition plate 33 in the thickness direction (the thickness direction mentioned here and below refers to the dimension from the upper surface to the lower surface) The first melt through hole 331 of the material transition plate is communicated, and a push rod in a group of push rods 32 corresponding to the second melt introduction hole 212 of the storage barrel cover is provided with a push rod second melt introduction hole 322 at a position corresponding to the second melt introduction hole 212 of the storage barrel cover. The push rod second melt introduction hole 322 is communicated with the second melt through hole 332 of the melt transition plate which is provided on the melt transition plate 33 and also runs through the melt transition plate 33 in the thickness direction through a push rod second melt longitudinal center guide hole 3221 provided at the central position of the lower end of the push rod.

[0030] The first melt introduction hole 321 of the ejector pin and the second melt introduction hole 322 of the ejector pin are located on the same horizontal plane, that is, their positions on the ejector pin are consistent.

[0031] Depend on Figure 4 As shown, a first screw extruder feed connector 216 is connected to the barrel cover 21 at a position corresponding to the first melt introduction hole 211 of the barrel cover, and a second screw extruder feed connector 217 is connected to the barrel cover 21 at a position corresponding to the second melt introduction hole 212 of the barrel cover. Figure 1 and Figure 4The high molecular weight polyethylene mentioned above is extruded by a first screw extruder not shown in the figure in a molten state through the first screw extruder feed connector 216, the first melt introduction hole 211 of the storage barrel cover, the first melt introduction hole 321 of the push rod, the first melt longitudinal center feed hole 3211 of the push rod, the first melt through hole 331 of the melt transition plate, the first melt semi-circular arc-shaped diverter groove 341 of the transition plate, the first melt outlet hole 3411 of the diverter groove, the melt bypass notch 373, the first melt outlet hole 351 of the feed plate, the longitudinal feed groove 3611 of the inner guide sleeve herringbone guide groove and the inner guide sleeve herringbone guide groove 361 and follows the first molten material flow channel 39a mentioned below to enter the storage barrel storage cavity 221 mentioned below. At the same time, the second screw extruder not shown in the figure makes the aforementioned thermoplastic high-density polyethylene resin in a molten state pass through the second screw extruder feed connector 217, the second melt material introduction hole 212 of the storage barrel cover, the second melt material introduction hole 322 of the push rod, the second melt material longitudinal center feed hole 3221 of the push rod, the second melt through hole 332 of the melt transition plate, the second melt semi-circular arc-shaped diverter groove 342 of the transition plate, the second melt outlet hole 3421 of the diverter groove, the longitudinal feed groove 3711 of the middle guide sleeve herringbone guide groove and the middle guide sleeve herringbone guide groove 371, and enter the storage barrel storage cavity 221 along the second molten material flow channel 39b mentioned below. As can be seen from the above, the melt used to form the molten blank in the storage barrel storage cavity 221 is a uniform mixture of high molecular weight polyethylene melt and thermoplastic high-density polyethylene resin melt, which provides raw material guarantee for the subsequent formation of the container, i.e., the molten blank of the IBC barrel. Figure 4 Also shown is a heating and heat-insulating ring 23 (also called a “heating and heat-insulating sleeve”) disposed outside the storage barrel 2 , and a rubber material discharge hole 24 opened at the upper end of the storage barrel 2 .

[0032] See also Figure 2 , Figure 2 A pair of inner guide sleeve herringbone guide grooves 361 formed on the front outer wall of the inner guide sleeve 36 and spaced 180 degrees from each other are shown. Since the intermediate guide sleeve herringbone guide grooves 371 formed on the front and rear outer walls of the intermediate guide sleeve 37 are similar to the aforementioned pair of inner guide sleeve herringbone guide grooves 361, the applicant did not disclose them in an expanded form of the figure.

[0033] As for the function of the above-mentioned set of material storage core scraper cleaning ribs 3621, it can remove the melt adhering to the outer wall of the material storage core 1 just like the effect of a washboard, and especially can avoid the melt fouling caused by long-term shutdown; the aforementioned set of material storage barrel inner wall scraper cleaning ribs 381 clean the inner wall of the material storage barrel 2 in the same way, which will not be repeated.

[0034] Please see the key Figure 1A material storage core through hole 311 is formed at the central position of the aforementioned push rod lower fixed plate 31, a molten material transition plate storage core through hole 333 is formed at the central position of the aforementioned molten material transition plate 33, a diverter plate storage core through hole 343 is formed at the central position of the aforementioned diverter plate 34, a diverter sleeve material storage core through hole 353 is formed at the central position of the aforementioned guide sleeve material guide plate 35, and the upper end surface of the aforementioned inner guide sleeve 36 The guide sleeve, the material guide plate 35, the diverter plate 34, the molten material transition plate 33 and the lower fixed plate 31 of the push rod are sequentially stacked from bottom to top and are slidably sleeved on the outside of the aforementioned material storage core 1. A material storage core upper end matching hole 214 is formed at the central position of the material storage barrel cover 21 of the aforementioned material storage barrel 2. The upper end of the aforementioned material storage core 1 protrudes upward through the material storage core upper end matching hole 214 to the upper surface of the material storage barrel cover 21 and is locked by the material storage core upper end locking nut 11.

[0035] In this embodiment, the diameters of the material storage core through hole 311 of the fixed plate below the push rod, the material storage core through hole 333 of the molten material transition plate, the material storage core through hole 343 of the diverter plate, the material storage core through hole 353 of the guide sleeve guiding plate, and the inner guide sleeve cavity 362 of the inner guide sleeve 36 are the same.

[0036] Depend on Figure 4 As shown, the gap formed by the outer wall of the aforementioned inner guide sleeve 36 and the inner wall of the aforementioned intermediate guide sleeve 37 constitutes the first molten material flow channel 39a mentioned above, and the gap formed by the outer wall of the aforementioned intermediate guide sleeve 37 and the inner wall of the aforementioned outer guide sleeve 38 constitutes the second molten material flow channel 39b mentioned above; the space at the lower part of the storage barrel cavity 22 of the aforementioned storage barrel 2 constitutes the above-mentioned storage barrel material storage cavity 221; a support plate threaded fitting hole 2131 is provided on the aforementioned storage barrel cover supporting platform 213 and at a position corresponding to the storage barrel cover 21, and a support plate 21311 is threadedly fitted at a position corresponding to the support plate threaded fitting hole 2131, and the storage barrel cover 21 is fixed to the support plate 21311 on all sides by storage barrel cover support fixing screws 215 distributed at intervals.

[0037] See the key points Figure 1 as well as Figure 5On the guide sleeve material guide plate 35 and around the guide sleeve material guide plate 35, inner guide sleeve fixing screws 354a, middle guide sleeve fixing screws 354b and outer guide sleeve fixing screws 354c are arranged at intervals, the middle guide sleeve fixing screws 354b are located on the outside of the inner guide sleeve fixing screws 354a, and the outer guide sleeve fixing screws 354c are located on the outside of the middle guide sleeve fixing screws 354b; on the upper surface of the inner guide sleeve 36, inner guide sleeve fixing screw holes 363 corresponding to the inner guide sleeve fixing screws 354a are arranged at intervals around the inner guide sleeve 36, and on the periphery of the middle guide sleeve 37, inner guide sleeve fixing screw holes 363 corresponding to the inner guide sleeve fixing screws 354a are arranged at intervals around the middle guide sleeve 37. The inner guide sleeve fixing screw hole 363 corresponds to the guide sleeve fixing screw 354b, the intermediate guide sleeve fixing screw holes 374 corresponding to the intermediate guide sleeve fixing screw 354b are spaced around the intermediate guide sleeve 37, and the outer guide sleeve fixing screw holes 383 corresponding to the outer guide sleeve fixing screw 354c are spaced around the outer guide sleeve 38, the inner guide sleeve fixing screw 354a is fixed to the inner guide sleeve fixing screw hole 363, the intermediate guide sleeve fixing screw 354b is fixed to the intermediate guide sleeve fixing screw hole 374, and the outer guide sleeve fixing screw 354c is fixed to the outer guide sleeve fixing screw hole 383.

[0038] See Figure 1 as well as Figure 3On the aforementioned push rod lower fixed plate 31 and around the push rod lower fixed plate 31, there are arranged at intervals a guide sleeve guide plate inner fixing screw 312, a diverter plate fixing screw 313 and a guide sleeve guide plate outer fixing screw 314. The diverter plate fixing screw 313 is located outside the guide sleeve guide plate inner fixing screw 312, and the guide sleeve guide plate outer fixing screw 314 is located outside the diverter plate fixing screw 313. On the aforementioned molten material transition plate 33, there are arranged at intervals a guide sleeve guide plate inner fixing screw 312 and a diverter plate fixing screw 313 around the molten material transition plate 33. The fixing screw through hole 334 in the melt transition plate corresponding to the fixing screw 312, the middle screw through hole 335 in the melt transition plate corresponding to the aforementioned flow guide plate fixing screw 313, and the outer transition screw through hole 336 in the melt transition plate corresponding to the aforementioned flow guide sleeve guide plate outer fixing screw 314 are provided on the aforementioned flow guide plate 34 at intervals around the flow guide plate 34. The inner fixing screw through holes 344 in the flow guide plate corresponding to the aforementioned flow guide sleeve guide plate inner fixing screw 312, the flow guide plate fixing screw through holes 343 in the flow guide plate corresponding to the aforementioned flow guide sleeve guide plate inner fixing screw 313, and the flow guide plate fixing screw through holes 344 in the flow guide plate corresponding to the aforementioned flow guide sleeve guide plate inner fixing screw 312, and the flow guide plate fixing screw through holes 345 in the flow guide plate corresponding to the aforementioned flow guide sleeve guide plate inner fixing screw 313 are provided on the aforementioned flow guide plate 34 at intervals around the aforementioned flow guide plate 34. The guide sleeve guide plate 35 has a plurality of fixed screw holes 345 and a transition screw through hole 346 on the outer side of the diverter plate corresponding to the outer fixing screw 314 of the guide sleeve guide plate. The guide sleeve guide plate 35 has inner fixing screw holes 355 corresponding to the inner fixing screw 312 of the guide sleeve guide plate and outer fixing screw holes 356 corresponding to the outer fixing screw 314 of the guide sleeve guide plate. The inner fixing screw 312 of the guide sleeve guide plate passes through the molten material in turn from top to bottom. The fixing screw through hole 334 in the transition plate and the fixing screw through hole 344 in the diverter plate are then screwed into the fixing screw hole 355 in the guide sleeve lead plate. The diverter plate fixing screw 313 passes through the middle screw through hole 335 of the molten material transition plate from top to bottom and is then screwed into the fixing screw hole 345 of the diverter plate. The fixing screw 314 outside the guide sleeve lead plate is screwed into the outer transition screw through hole 336 and the outer transition screw through hole 346 of the molten material transition plate from top to bottom in sequence and then is screwed into the outer fixing screw hole 356 of the guide sleeve lead plate.

[0039] See you next time Figure 1On the aforementioned molten material transition plate 33 and around the circumference of the molten material transition plate 33, there are arranged at intervals a diverter plate inner ring fixing screw 337a and a diverter plate outer ring fixing screw 337b, the diverter plate inner ring fixing screw 337a and the diverter plate outer ring fixing screw 337b are arranged on the aforementioned diverter plate 34 and correspond to the diverter plate inner ring fixing screw 337a and the diverter plate outer ring fixing screw 337b. The molten material transition plate 33 is fixed with a nail hole and a fixing screw hole on the outer ring of the diverter plate; an alignment pin 338 is also provided on the aforementioned molten material transition plate 33, and the upper end of the alignment pin 338 protrudes from the upper surface of the molten material transition plate 33 and protrudes into the alignment pin upper probing hole 315 opened on the aforementioned push rod lower fixed plate 31, while the lower end of the alignment pin 338 protrudes from the lower surface of the molten material transition plate 33 and protrudes into the alignment pin lower probing hole 347 opened on the aforementioned diverter plate 34.

[0040] Please see the key Figure 4A die sleeve mechanism 5 is connected to the lower part of the aforementioned storage barrel 2, and the die sleeve mechanism 5 includes a die sleeve seat 51, an outer die 52, an outer die connection plate 53 and a connecting pressure ring 54. The upper end of the die sleeve seat 51 is matched with the lower end of the storage barrel 2, and a pressure ring fixing connection flange 511 is formed on the outer wall of the lower end of the die sleeve seat 51 and around the circumferential direction of the die sleeve seat 51. The connecting pressure ring 54 is located below the pressure ring fixing connection flange 511 and is fixed by connecting pressure rings distributed at intervals. The screw 541 is fixed to the pressure ring fixing flange 511, and the upper part of the outer die 52 is fixed to the outer die connecting plate 53 by the outer die fixing screw 521, and the bottom of the outer edge of the outer die connecting plate 53 in the circumferential direction is supported on the bottom wall of the connecting pressure ring cavity of the connecting pressure ring 54; the lower end of the aforementioned storage core 1 extends into the mold sleeve seat cavity of the mold sleeve seat 51, and a center pull rod 12 is arranged in the storage core longitudinal center hole 13 of the storage core 1 so as to move up and down, and the upper end of the center pull rod 12 The central rod 12 extends to the top of the material storage core 1 and passes through the aforementioned ejector rod driving mechanism 4 and then extends upward to be connected with the central rod lifting mechanism 6 above the ejector rod driving mechanism 4. The lower end of the central rod 12 extends out of the material storage core 1 and is equipped with an inner mold mechanism 7. The inner mold mechanism 7 includes a guide sleeve 71 that rises and falls with the aforementioned central rod 12, an inner die 72 and an inner die limiting nut 73. The guide sleeve 71 is located above the inner die 72 and is connected by spaced guide sleeve connecting screws. 711 is connected to the top of the inner die 72, and the inner die limiting nut 73 is located in the inner die cavity 721 of the inner die 72 and is fixed to the lower end of the center pull rod 12 extending into the inner die cavity 721, wherein the gap between the outer wall of the guide sleeve 71 and the upper inner wall of the aforementioned outer die 52 constitutes a melt transition flow channel 712 communicated with the aforementioned storage barrel storage cavity 221, and the gap between the outer wall of the inner die 72 and the lower inner wall of the outer die 52 constitutes a melt outlet flow channel 722.

[0041] Based on the above description and combined Figure 4 It can be seen that the inner die 72 moves downward to open the mouth of the melt outlet channel 722 ( Figure 1 The bottom shown in the figure) and under the operation of the injection mechanism assembly 3, the mixed material, i.e. the mixed melt formed by uniformly mixing the first melt material, i.e. the high molecular weight polyethylene melt material, and the second melt material, i.e. the thermoplastic high density polyethylene resin melt material, in the storage barrel storage chamber 221 at the lower part of the storage barrel chamber 22 will be led out through the melt transition flow channel 712 and the melt lead-out flow channel 722 in sequence.

[0042] See you next time Figure 4The aforementioned push rod driving mechanism 4 includes a push rod oil cylinder body 41, a push rod oil cylinder upper cylinder cover 42, a push rod lower cylinder cover 43, a push rod piston 44 and a center pull rod spacer 45. The push rod oil cylinder upper cylinder cover 42 is fixed to the upper end of the push rod oil cylinder body 41, the push rod lower cylinder cover 43 is fixed to the lower end of the push rod oil cylinder body 41, and the push rod piston 44 is arranged in the push rod oil cylinder body piston cavity 411 of the push rod oil cylinder body 41. The upper end of the tie rod spacer 45 extends to the top of the push rod piston 44 and is fixed to the push rod cylinder upper cylinder cover 42, while the lower end of the center tie rod spacer 45 is supported on the push rod lower cylinder cover 43, and the upper end outer wall and the lower end outer wall of the center tie rod spacer 45 are respectively sealed with the push rod cylinder upper cylinder cover 42 and the push rod lower cylinder cover 43 through sealing rings. The central position of the push rod piston 44 is connected to the center tie rod through the push rod piston sealing ring 441. The outer wall of the spacer 45 forms a sealing fit relationship for sliding up and down; the upper end of the aforementioned set of push rods 32 enters the aforementioned push rod cylinder piston chamber 411 through the push rod lower cylinder cover push rod hole 431 on the aforementioned push rod lower cylinder cover 43 and is fixed to the downward side of the push rod piston 44, wherein a push rod lower cylinder cover push rod hole sealing ring 4311 that seals with the push rod 32 is provided on the hole wall of the push rod lower cylinder cover push rod hole 431; the aforementioned center The upper end of the pull rod 12 passes through the center pull rod hole 432 of the lower cylinder cover 43 at the central position of the push rod lower cylinder cover and the center pull rod spacer center hole 451 of the center pull rod spacer 45 from bottom to top, and then is connected upward to the aforementioned center pull rod lifting mechanism 6; wherein, a support plate 46 is fixed at a position corresponding to the lower position of the aforementioned push rod lower cylinder cover 43 by a support rod plate fixing screw, and a support member 47 is arranged between the support plate 46 and the opposite side of the aforementioned storage barrel cover 21.

[0043] Since the push rod piston 44 of the above-mentioned push rod driving mechanism 4 makes a group of push rods 32 work (lift and lower), and the up and down lifting action of a group of push rods 32 causes the above-mentioned push rod lower fixed plate 31, molten material transition plate 33, diverter plate 34, guide sleeve material guide plate 35, inner guide sleeve 36, middle guide sleeve 37 and outer guide sleeve 38 to move accordingly to realize the mechanism of injection, which is similar to CN106003665B (double-layer guide storage die head device for blow molding machine), and the applicant will not repeat it here.

[0044] Still see Figure 4The aforementioned central tie rod lifting mechanism 6 includes a tie rod acting oil cylinder body 61, a tie rod acting oil cylinder upper cylinder cover 62, a tie rod up and down lifting piston 63, and a tie rod up and down lifting piston stroke adjustment screw sleeve 64 and an adjustment screw sleeve locking nut 65. The tie rod acting oil cylinder upper cylinder cover 62 is fixed to the upper end of the tie rod acting oil cylinder body 61, and the lower end of the tie rod acting oil cylinder body 61 is supported on the aforementioned push rod oil cylinder upper cylinder cover 42 which also serves as the tie rod acting oil cylinder lower cylinder cover, and the upper end inner wall of the tie rod acting oil cylinder body 61 and The inner wall of the lower end is sealed with the upper cylinder cover 62 of the pull rod action cylinder and the upper cylinder cover 42 of the push rod cylinder respectively through the pull rod action cylinder body sealing ring 611, and the pull rod up and down lifting piston 63 is arranged in the pull rod action cylinder body piston cavity 612 of the pull rod action cylinder body 61, and the pull rod up and down lifting piston 63 is sealed with the cavity wall of the pull rod action cylinder body piston cavity 612 through the pull rod up and down lifting piston sealing ring 631, wherein the pull rod up and down lifting piston 63 extends downwardly from the middle of the lower side A lifting piston lower mating end 632, the lifting piston lower mating end 632 is sealed and matched with the center hole 421 of the push rod oil cylinder upper cylinder cover 42 of the push rod oil cylinder in an up-and-down sliding state, and a lifting piston upper mating end 633 is extended upward from the middle of the upper side of the pull rod lifting piston 63, and the lifting piston upper mating end 633 is sealed and matched with the center hole 621 of the pull rod acting oil cylinder upper cylinder cover 62 of the pull rod acting oil cylinder upper cylinder cover 62 in an up-and-down sliding state. The upper end of the aforementioned center pull rod 12 passes from bottom to top The center hole 634 of the pull rod up and down lifting piston 63 of the pull rod up and down lifting piston extends to the top of the cylinder cover 62 of the aforementioned pull rod acting cylinder. The pull rod up and down lifting piston stroke adjusting screw sleeve 64 is fixed to the upper end of the center pull rod 12 at a position corresponding to the top of the cylinder cover 62 of the pull rod acting cylinder, and is connected to the mating end 633 on the aforementioned lifting piston by a piston connecting screw 641. The adjusting screw sleeve locking nut 65 is threadedly mated with the center pull rod 12 at a position corresponding to the top of the pull rod up and down lifting piston stroke adjusting screw sleeve 64.

[0045] After the storage barrel cavity 22 has finished storing materials, that is, after the storage barrel storage cavity 221 has finished storing materials, the pull rod acting oil cylinder body 61 (i.e., the push rod acting oil cylinder) of the center pull rod lifting mechanism 6 works, and the upper part of the pull rod lifting piston 63, i.e., the upper cavity of the piston cavity 612 of the pull rod acting cylinder body, enters oil, and the oil pressure forces the pull rod lifting piston 63 to move downward, driving the center pull rod 12 downward, and the center pull rod 12 drives the guide sleeve 71 fixedly connected to its lower end and the inner die 72 (also called "inner die" or "mold core") connected to the guide sleeve 71 downward, opening the melt outlet flow channel 722. At the same time, under the operation of the ejector drive mechanism 4 driving the injection mechanism assembly 3, the material in the storage barrel storage cavity 221 for forming a molten blank is guided to the mouth (bottom) of the melt transition flow channel 712 and the melt outlet flow channel 722 in sequence and moved to the mold located below. Under the reverse operation of the central tie rod lifting mechanism 6, the lower part of the tie rod lifting piston 63, i.e., the lower chamber of the piston chamber 612 of the tie rod cylinder body, enters oil (the aforementioned upper chamber returns oil), and the pressure of the oil forces the tie rod lifting piston 63 to move upward until the outer wall of the aforementioned inner die 72 touches the inner wall of the outer die 52 and the outlet of the melt outlet channel 722 is temporarily closed. At the same time, the aforementioned push rod driving mechanism 4 drives the injection mechanism assembly 3 to move in the opposite direction (i.e., upward) to prepare for the next injection. Since the next injection, i.e., the process of providing the next molten billet for forming an IBC barrel, is similar to the aforementioned process, the applicant will not repeat it. It should be noted that the material (molten mixed material) stored in the storage chamber 221 of the storage barrel can meet the requirement of providing a plurality of molten billets.

[0046] In summary, the technical solution provided by the utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A die head injection device, characterized in that: The invention comprises an ejection mechanism assembly (3), wherein the ejection mechanism assembly (3) comprises a lower fixed plate (31) of an ejector rod, a group of ejector rods (32), a molten material transition plate (33), a diverter plate (34), a guide sleeve material guide plate (35), an inner guide sleeve (36), an intermediate guide sleeve (37) and an outer guide sleeve (38), wherein the group of ejector rods (32) are spaced apart in a circumferential direction and the lower ends are fixed to the lower fixed plate (31) of the ejector rod, the molten material transition plate (33) is located below the lower fixed plate (31) of the ejector rod, and a first molten material transition plate through hole (331) and a molten material transition plate through hole (331) of the molten material transition plate (33) are provided on the molten material transition plate (33) and a molten material transition plate through hole (331) of the molten material transition plate (33) in a thickness direction thereof. The first and second melt through holes (331, 332) of the molten material transition plate are 180° apart from each other in the circumferential direction of the molten material transition plate (33); the diverter plate (34) is located below the molten material transition plate (33); a first molten material semi-circular arc diverter groove (341) and a second molten material semi-circular arc diverter groove (342) of the transition plate are provided on the upper side of the molten material transition plate (33); the two end portions of the first molten material semi-circular arc diverter groove (341) of the transition plate each form a first molten material outlet hole (3411); the two end portions of the second molten material semi-circular arc diverter groove (342) of the transition plate each form a second molten material outlet hole (3412); The molten material outlet hole (3421), the first molten material outlet hole (3411) of the diverter groove and the second molten material outlet hole (3421) of the diverter groove penetrate the thickness direction of the diverter plate (34); the first molten material through hole (331) of the molten material transition plate is communicated with the first molten material semi-circular arc diverter groove (341) of the transition plate, and the second molten material through hole (332) of the molten material transition plate is communicated with the second molten material semi-circular arc diverter groove (342) of the transition plate; the guide sleeve guide plate (35) is located below the diverter plate (34) and is fixed to the upper end faces of the inner guide sleeve (36), the middle guide sleeve (37) and the outer guide sleeve (38) at the same time; on the guide sleeve guide plate (35) and at the corresponding A first molten material outlet hole (351) of the guide plate is provided at the position of the first molten material outlet hole (3411) of the diverter slot, which penetrates the thickness direction of the guide sleeve guide plate (35) and communicates with the first molten material outlet hole (3411) of the diverter slot. A pair of second molten material outlet holes (352) of the guide plate are provided at the position corresponding to the second molten material outlet hole (3421) of the diverter slot, which also penetrate the thickness direction of the guide sleeve guide plate (35) and communicate with the second molten material outlet hole (3421) of the diverter slot in an isolated state. The inner guide sleeve (36) is accommodated in the middle guide sleeve cavity (372) of the middle guide sleeve (37).A pair of inner guide sleeve herringbone guide grooves (361) are formed on the outer wall of the inner guide sleeve (36) and are located in front and back correspondence with each other and are recessed in the outer surface of the inner guide sleeve (36). A longitudinal feed groove (3611) of the inner guide sleeve herringbone guide groove, which is communicated with the inner guide sleeve herringbone guide groove (361) and is used to introduce melt into the inner guide sleeve herringbone guide groove (361), is formed above the center position of the pair of inner guide sleeve herringbone guide grooves (361). A circular groove (3611) is formed at the lower part of the cavity wall of the inner guide sleeve cavity (362) of the inner guide sleeve (36) and surrounds the cavity wall of the inner guide sleeve cavity. A group of material storage core scraping cleaning ribs (3621) are formed in a spaced state in the circumferential direction; the intermediate guide sleeve (37) is accommodated in the outer guide sleeve cavity (382) of the outer guide sleeve (38); a pair of intermediate guide sleeve herringbone guide grooves (371) are formed on the outer wall of the intermediate guide sleeve (37) and are located front and back corresponding to each other and are recessed in the outer surface of the intermediate guide sleeve (37); a channel for introducing melt into the intermediate guide sleeve herringbone guide groove (371) is formed above the center position of the pair of intermediate guide sleeve herringbone guide grooves (371). 1) in the middle guide sleeve herringbone guide groove longitudinal feed groove (3711), the second molten material outlet hole (352) of the guide plate corresponds to and communicates with the middle guide sleeve herringbone guide groove longitudinal feed groove (3711), wherein a melt bypass notch (373) is provided on the upper surface of the middle guide sleeve (37) and at a position corresponding to the middle guide sleeve herringbone guide groove longitudinal feed groove (3711), the melt bypass notch (373) corresponds to the first molten material outlet hole (351) of the guide plate and is also connected to the first molten material outlet hole (352) of the guide plate 51) and the inner guide sleeve herringbone guide groove longitudinal feed groove (3611), the outer guide sleeve (38) is accommodated in the storage barrel cavity (22) of the storage barrel (2) in the use state, and a group of storage barrel inner wall scraping cleaning ribs (381) are formed in a spaced state at the lower part of the outer wall of the outer guide sleeve (38) and around the circumferential direction of the outer guide sleeve (38) to contact the cavity wall of the storage barrel cavity (22); the lower end of the middle guide sleeve (37) extends to the lower part of the inner and outer guide sleeves (36, 38) and the longitudinal cross-section of the lower end of the middle guide sleeve (37) is rhombus-shaped.

2. The die head injection device according to claim 1, characterized in that: In the group of pusher rods (32), a first melt introduction hole (321) of the pusher rod is provided in the middle of the height direction of the pusher rod corresponding to the first melt through hole (331) of the melt transition plate, and the first melt introduction hole (321) of the pusher rod is communicated with the first melt through hole (331) of the melt transition plate through a first melt longitudinal center feed hole (3211) of the pusher rod provided at the center position of the pusher rod, and a second melt introduction hole (322) of the pusher rod is provided in the middle of the height direction of the pusher rod corresponding to the second melt through hole (332) of the melt transition plate, and the second melt introduction hole (322) of the pusher rod is communicated with the second melt through hole (332) of the melt transition plate through a second melt longitudinal center feed hole (3221) of the pusher rod provided at the center position of the pusher rod.

3. The die head injection device according to claim 2, characterized in that: The first melt introduction hole (321) of the push rod and the second melt introduction hole (322) of the push rod are located on the same horizontal plane.

4. The die head injection device according to claim 1, characterized in that: A material storage core passing hole (311) of the lower fixed plate (31) of the pusher rod is formed at the central position of the pusher rod, a material storage core passing hole (333) of the molten material transition plate (33) is formed at the central position of the molten material transition plate (33), a diverter plate material storage core passing hole (343) is formed at the central position of the diverter plate (34), and a guide sleeve material storage core passing hole (353) is formed at the central position of the guide sleeve material guide plate (35). The upper end surface of the inner guide sleeve (36), the guide sleeve material guide plate (35), the diverter plate (34), the molten material transition plate (33) and the lower fixed plate (31) of the pusher rod are sequentially stacked from bottom to top.

5. The die head injection device according to claim 4, characterized in that: The diameters of the material storage core through hole (311) of the fixed disk under the push rod, the material storage core through hole (333) of the molten material transition disk, the material storage core through hole (343) of the diverter disk, the material storage core through hole (353) of the guide sleeve guide disk, and the inner guide sleeve cavity (362) of the inner guide sleeve (36) are the same.

6. The die head injection device according to claim 1, characterized in that: The gap formed between the outer wall of the inner guide sleeve (36) and the inner wall of the intermediate guide sleeve (37) constitutes a first molten material flow channel (39a), and the gap formed between the outer wall of the intermediate guide sleeve (37) and the inner wall of the outer guide sleeve (38) constitutes a second molten material flow channel (39b); the space at the lower part of the storage barrel cavity (22) of the storage barrel (2) constitutes a storage barrel storage cavity (221).

7. The die head injection device according to claim 1, characterized in that: An inner guide sleeve fixing screw (354a), an intermediate guide sleeve fixing screw (354b) and an outer guide sleeve fixing screw (354c) are arranged at intervals on the guide sleeve guide plate (35) and around the guide sleeve guide plate (35); the intermediate guide sleeve fixing screw (354b) is located outside the inner guide sleeve fixing screw (354a), and the outer guide sleeve fixing screw (354c) is located outside the intermediate guide sleeve fixing screw (354b).

8. The die head injection device according to claim 7, characterized in that: Inner guide sleeve fixing screw holes (363) corresponding to the inner guide sleeve fixing screws (354a) are arranged at intervals around the inner guide sleeve (36) on the upper surface of the inner guide sleeve (36), inner guide sleeve fixing screw holes (363) corresponding to the middle guide sleeve fixing screws (354b) are arranged at intervals around the middle guide sleeve (37), and middle guide sleeve fixing screw holes (363) corresponding to the middle guide sleeve fixing screws (354b) are arranged at intervals around the middle guide sleeve (37). The outer guide sleeve fixing screw holes (374) are provided with outer guide sleeve fixing screw holes (383) corresponding to the outer guide sleeve fixing screws (354c) at intervals around the outer guide sleeve (38), the inner guide sleeve fixing screws (354a) are fixed to the inner guide sleeve fixing screw holes (363), the middle guide sleeve fixing screws (354b) are fixed to the middle guide sleeve fixing screw holes (374), and the outer guide sleeve fixing screws (354c) are fixed to the outer guide sleeve fixing screw holes (383).

9. The die head injection device according to claim 1, characterized in that: On the lower fixed plate (31) of the push rod and around the lower fixed plate (31) of the push rod, there are arranged at intervals inner fixing screws (312) of the guide sleeve material guide plate, fixing screws (313) of the diverter plate and outer fixing screws (314) of the guide sleeve material guide plate. The diverter plate fixing screws (313) are located outside the inner fixing screws (312) of the guide sleeve material guide plate, while the outer fixing screws (314) of the guide sleeve material guide plate are located outside the diverter plate fixing screws (313). On the molten material transition plate (33), there are arranged at intervals inner fixing screws (312) of the guide sleeve material guide plate and around the molten material transition plate (33). The molten material transition plate inner fixing screw through hole (334) corresponding to the inner fixing screw (312), the molten material transition plate middle screw through hole (335) corresponding to the diverter plate fixing screw (313), and the molten material transition plate outer transition screw through hole (336) corresponding to the guide sleeve guide plate outer fixing screw (314), the diverter plate inner fixing screw through hole (344) corresponding to the guide sleeve guide plate inner fixing screw (312), the diverter plate inner fixing screw through hole (345) corresponding to the diverter plate fixing screw (313) are arranged at intervals around the diverter plate (34). The guide sleeve guide plate (35) has a plate fixing screw hole (345) and a diverter plate outer transition screw through hole (346) corresponding to the guide sleeve guide plate outer fixing screw (314); the guide sleeve guide plate inner fixing screw holes (355) corresponding to the guide sleeve guide plate inner fixing screw (312) and the guide sleeve guide plate outer fixing screw holes (356) corresponding to the guide sleeve guide plate outer fixing screw (314) are arranged at intervals around the guide sleeve guide plate (35), and the guide sleeve guide plate inner fixing screw (312) passes through the melting The fixing screws (313) of the guide sleeve guide plate are screwed into the fixing screw holes (355) of the guide sleeve guide plate after passing through the fixing screw holes (334) of the molten material transition plate and the diverter plate from top to bottom. The diverter plate fixing screws (313) pass through the middle screw holes (335) of the molten material transition plate from top to bottom and are screwed into the fixing screw holes (345) of the diverter plate. The fixing screws (314) outside the guide sleeve guide plate are screwed into the outer transition screw holes (336) of the molten material transition plate and the outer transition screw holes (346) of the diverter plate from top to bottom in sequence and are screwed into the outer fixing screw holes (356) of the guide sleeve guide plate.

10. The die head injection device according to claim 9, characterized in that: A diverter plate inner ring fixing screw (337a) and a diverter plate outer ring fixing screw (337b) are arranged at intervals on the molten material transition plate (33) and around the circumferential direction of the molten material transition plate (33). The diverter plate inner ring fixing screw (337a) and the diverter plate outer ring fixing screw (337b) correspond to the diverter plate inner ring fixing screw holes provided on the diverter plate (34) and corresponding to the diverter plate inner ring fixing screw (337a) and the diverter plate outer ring fixing screw (337b) respectively. The molten material transition plate (33) is fixed by a fixing screw hole on the outer ring of the shunt plate; an alignment pin (338) is also provided on the molten material transition plate (33), the upper end of the alignment pin (338) protrudes from the upper surface of the molten material transition plate (33) and protrudes into the alignment pin upper protrusion hole (315) provided on the lower fixed plate (31) of the push rod, and the lower end of the alignment pin (338) protrudes from the lower surface of the molten material transition plate (33) and protrudes into the alignment pin lower protrusion hole (347) provided on the shunt plate (34).

Images