A nozzle assembly for plasticizing parts of a high-tonnage injection blow molding machine

Abstract

The present invention discloses a nozzle assembly for plasticizing parts of a high-tonnage injection-blow machine, including a nozzle, a nozzle, a nozzle, a feed pipe and a conveying screw. The nozzle is fixed on the left side of the nozzle, and the nozzle is provided with a nozzle inside. The right side of the nozzle is connected with a feed pipe by a thread, and a conveying screw is arranged inside the feed pipe. A connecting mechanism is arranged on the right side of the nozzle, a pushing mechanism is arranged inside the nozzle, and a transmission mechanism and a flow guide mechanism are arranged at the bottom of the left side of the nozzle. The present invention combines the connecting mechanism, the pushing mechanism, the transmission mechanism and the flow guide mechanism together through the above structure, so that the device is closely connected as a whole, and effectively prevents the problem that when the nozzle is not used for a long time, the inside may be blocked, resulting in the inability of the solution to be sprayed out from the inside of the nozzle, and the nozzle may be damaged in the case of blockage, affecting the normal use of the nozzle.

Description

Technical Field

[0001] The invention relates to the technical field of nozzle assemblies, in particular to a nozzle assembly for a plasticizing component of a high-tonnage injection-blow machine. Background Art

[0002] The nozzle assembly mainly applies pressure to the melt after hot pressing plasticization through a screw or a plunger, and injects the melt from the nozzle into the mold for injection molding. The existing nozzle assembly for plasticizing parts of high-tonnage injection-blowing machines has various functions to meet various needs for plasticizing parts. For example, a self-locking nozzle of a laminated mold disclosed in Publication No. CN104924534A. The present invention simplifies the mold structure and greatly reduces the mold cost by adopting an extended self-locking nozzle structure. The glue is fed and sealed at the same time during injection molding, the injection molding efficiency is improved, and the problem of injection molding overflow is effectively solved; for example, a mold nozzle assembly for injection molding of large plastic parts disclosed in Publication No. CN109228145A solves the problems of bubbles and uneven texture of existing large plastic parts during the injection molding process; for example, a multifunctional spring nozzle for an injection molding machine disclosed in Publication No. CN107364075A can maintain the temperature of the melt and the injection flow rate is adjustable. Therefore, it can be seen that the existing nozzle assembly for plasticizing parts of high-tonnage injection-blowing machines has met people's use needs, but the following problems still exist.

[0003] The existing nozzle assemblies for plasticizing parts of high-tonnage injection blow molding machines are generally of an integrated structural design. When the nozzle is not used for a long time, it may become clogged, resulting in the inability of the solution to be sprayed out from the inside of the nozzle and injected into the mold. In the case of clogging, the nozzle may also be damaged, which greatly reduces the life of the nozzle and affects the normal use of the nozzle. Therefore, a new type of nozzle assembly for plasticizing parts of high-tonnage injection blow molding machines is urgently needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a nozzle assembly for a plasticizing component of a high-tonnage injection blow molding machine, so as to solve the problem of nozzle clogging when the nozzle is not used for a long time as mentioned in the background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a nozzle assembly for a plasticizing component of a high-tonnage injection-blow machine, comprising a nozzle, a nozzle, a nozzle opening, a feed pipe and a conveying screw, wherein a nozzle is fixed on the left side of the nozzle, and nozzle openings are provided inside the nozzle, a feed pipe is connected to the right side of the nozzle by a thread, and a conveying screw is provided inside the feed pipe, a connecting mechanism is provided on the right side of the nozzle, a pushing mechanism is provided inside the nozzle, and a transmission mechanism and a flow guide mechanism are respectively provided at the bottom end of the left side of the nozzle.

[0006] Preferably, the connecting mechanism includes a rotating screw, a fixed plate, a first set of rods, a second set of rods, a ring, a rotating rod, a connecting plate, a connecting block and a connecting groove. The right side of the nozzle is threadedly connected to the rotating screw, and the bottom end of the rotating screw is movably connected to the fixed plate through a bearing. The first set of rods are welded on both sides of the top of the fixed plate, and the second set of rods are sleeved on the outside of the first set of rods. The tops of the two groups of the second set of rods are welded to the inner wall of the nozzle, and the rings are fixed on both sides of the bottom end of the fixed plate, and the inside of the rings is movably connected to the rotating rod through a bearing. Connecting plates are fixedly installed on both sides of the rotating rod, and connecting blocks are provided at the connecting plates away from the center of the rotating rod. The right side of the connecting block on the right side is welded to the left side of the conveying screw. Connecting grooves are opened inside the two groups of connecting blocks, and the connecting blocks are mutually engaged with the connecting plates through the connecting grooves.

[0007] Preferably, the pushing mechanism includes a fixed frame, a wire block, a limit slide rod, a screw rod, a connecting rod, a first pushing block, a second pushing block and a resisting rod. A fixed frame is provided on the right side inside the nozzle, the left side of the connecting block is welded to the right side of the fixed frame, and the left side of the fixed frame is fixed to the wire block, the upper and lower ends of the wire block are fixed with limit slide rods, and the limit slide rod is slidably connected to the inner wall of the nozzle, the wire block is threadedly connected with a screw rod, and a connecting rod is welded on the left side of the screw rod, the first pushing block is welded on the left side of the connecting rod, and the second pushing block is fixed to the left side of the first pushing block, and a resisting rod is fixedly installed on the left side of the second pushing block.

[0008] Preferably, the transmission mechanism includes a push rod, a first chamber, a first rack plate, a first gear, a second gear, a second rack plate, a collecting tank, a limiting rod, a holder, a sliding block and a slide rail, the push rod is fixedly installed at the bottom end of the second push block, a first chamber is opened at the left bottom end of the nozzle, and a first rack plate is arranged inside the first chamber, a push rod is fixed at the left top end of the first rack plate, a first gear is arranged at the rear side of the first rack plate, and a second gear is arranged at the left side of the rear end of the first gear, the bottom ends of the first gear and the second gear are both movably connected to the upper and lower inner walls of the first chamber through bearings, a second rack plate is arranged at the rear side of the second gear, and the left side of the second rack plate is fixedly installed on the right side of the rear end of the collecting tank, the front end of the right side of the collecting tank is fixed with a limiting rod, a holder is fixed on the left side of the first chamber, and the second rack plate is slidably connected inside the holder, a sliding block is fixedly connected to the right side of the first rack plate, and the bottom end of the sliding block is slidably connected to the first chamber through the sliding rail.

[0009] Preferably, the guide mechanism includes a guide plate, a first spring, a second chamber, a buffer plate and a second spring. The front and rear ends of the left side of the collecting trough are movably connected with the guide plate through a rotating shaft, and the first springs are fixed on both the front and rear sides of the right bottom end of the guide plate. The bottom ends of the two groups of the first springs are fixed to the left side of the collecting trough. The second chamber is opened at the top of the guide plate, and the buffer plate is sleeved inside the second chamber. The second spring is fixed to the bottom end of the buffer plate, and the bottom end of the second spring is fixed inside the second chamber.

[0010] Preferably, clamping blocks are fixedly installed at both the front and rear ends of the connecting plate, and clamping slots are opened at both the front and rear ends inside the connecting groove, and the clamping blocks and the clamping slots are engaged with each other.

[0011] Preferably, arc-shaped grooves are formed on all sides of the first pushing block, and an arc-shaped notch is formed on the left side of the support rod.

[0012] Preferably, a slide groove cooperating with the limiting rod is provided on the inner wall of the nozzle, and the limiting rod and the slide groove are slidably connected.

[0013] Preferably, the left side of the guide plate is designed to be arc-shaped, and the buffer plate is designed to be inclined.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the nozzle assembly for the plasticizing component of the high-tonnage injection-blow machine is provided with a rotating screw, a fixed plate, a first set of rods, a second set of rods, a collar, a rotating rod, a connecting plate, a connecting block and a connecting groove. First, the rotating screw is twisted to make the rotating screw move downward, thereby driving the fixed plate to move downward. When the connecting plates on both sides of the rotating rod are fully inserted into the connecting block and engaged with the connecting groove, the twisting of the rotating screw is stopped. Under the action of the engagement, the pushing mechanism and the conveying screw are connected to each other. At the same time, a fixed frame, a wire block, a limiting slide rod, a wire rod, a connecting rod, a first pushing block, a second pushing block and a resisting rod are provided. Under the action of the wire block and the wire rod, the connecting rod moves to the left side, and the wire block is limited by the action of the limiting slide rod. Then, when the first pushing block is pushed to the left side, under the action of the resisting rod, the blockage inside the nozzle can be effectively pushed out to prevent the nozzle from being blocked. At the same time, a push rod, a first chamber, a first rack plate, a first gear, a second gear, The second rack plate, the collecting groove, the limit rod and the clamping seat. Under the action of this mechanism, when the second pushing block moves to the left, the collecting groove can be pushed outward through the operation of the transmission mechanism to collect the residue and blockage, which is convenient for cleaning. At the same time, a guide plate, a first spring, a second chamber, a buffer plate and a second spring are provided. When the collecting groove is moved out, the guide plate can be unfolded under the action of the restoring force released outward by the guide plate to divert the blockage and prevent it from spilling. In summary, the connecting mechanism, the pushing mechanism, the transmission mechanism and the diversion mechanism are coordinated together through the above structure, so that the device is closely connected as a whole, and effectively prevents the nozzle from being blocked when it is not used for a long time, resulting in the solution being unable to be sprayed from the inside of the nozzle and injected into the mold. In the case of blockage, the nozzle may be damaged, affecting the normal use of the nozzle. The structure saves time and effort and is easy to clean. It is simple and convenient to operate, which improves the service life of the nozzle and makes the nozzle easy to use and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the working state structure of the present invention;

[0018] Figure 3It is a schematic diagram of the front cross-sectional structure of the connecting mechanism of the present invention;

[0019] Figure 4 It is a schematic diagram of a partial front view cross-sectional structure of the left side of the nozzle of the present invention;

[0020] Figure 5 It is a schematic diagram of the partial top view of the left side of the nozzle of the present invention;

[0021] Figure 6 It is a schematic diagram of the top view of the structure of the fixing plate, the collar, the rotating rod, the connecting plate, the connecting block and the connecting groove of the present invention;

[0022] Figure 7 It is a side view structural diagram of the first pushing block, the second pushing block and the stop rod of the present invention;

[0023] Figure 8 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0024] Fig. 9 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0025] In the figure: 1, nozzle; 2, nozzle; 3, nozzle; 4, feeding pipe; 5, conveying screw; 611, rotating screw; 612, fixing plate; 613, first set of rods; 614, second set of rods; 615, collar; 616, rotating rod; 617, connecting plate; 618, connecting block; 619, connecting groove; 711, fixing frame; 712, wire block; 713, limit slide rod; 714, wire rod; 715, connecting rod; 716, first push rod Block; 717, second push block; 718, push rod; 811, push rod; 812, first chamber; 813, first rack plate; 814, first gear; 815, second gear; 816, second rack plate; 817, collecting trough; 818, limit rod; 819, holder; 820, slider; 821, slide rail; 911, guide plate; 912, first spring; 913, second chamber; 914, buffer plate; 915, second spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-9 , an embodiment provided by the present invention:

[0028] A nozzle assembly for plasticizing parts of a high-tonnage injection-blow machine comprises a nozzle 1, a nozzle 2, a nozzle opening 3, a feed pipe 4 and a conveying screw 5. The nozzle 2 is fixed on the left side of the nozzle 1, and the nozzle opening 3 is opened inside the nozzle 2. The right side of the nozzle 1 is connected with the feed pipe 4 through a thread, and the feed pipe 4 is provided with a conveying screw 5. A connecting mechanism is provided on the right side of the nozzle 1, a pushing mechanism is provided inside the nozzle 1, and a transmission mechanism and a flow guide mechanism are respectively provided at the bottom end of the right side of the nozzle 1.

[0029] According to the attached Figure 3 and attached Figure 6 It can be seen that the connecting mechanism includes a rotating screw 611, a fixed plate 612, a first set of rods 613, a second set of rods 614, a collar 615, a rotating rod 616, a connecting plate 617, a connecting block 618 and a connecting groove 619. The right side of the nozzle 1 is threadedly connected with a rotating screw 611, and the bottom end of the rotating screw 611 is movably connected to the fixed plate 612 through a bearing. The first set of rods 613 are welded on both sides of the top of the fixed plate 612, and the second set of rods 614 are sleeved on the outside of the first set of rods 613. The tops of the two sets of second sets of rods 614 are welded to the inner wall of the nozzle 1. The collars 615 are fixed on both sides of the bottom end of the fixed plate 612, and the inside of the collar 615 is movably connected to the rotating rod 616 through a bearing. Connecting plates 617 are fixedly installed on both sides of the rotating rod 616, and the connecting plate 61 A connection block 618 is provided at a position away from the center of the rotating rod 616. The right side of the right connection block 618 is welded to the left side of the conveying screw 5. A connection groove 619 is provided inside the two sets of connection blocks 618, and the connection blocks 618 are engaged with the connection plate 617 through the connection groove 619. First, the rotating screw 611 is twisted to move the fixed plate 612 downward, so that the connection plate 617 and the connection block 618 are engaged with each other. The push mechanism is operated by the conveying screw 5, which improves the usability. Blocks are fixedly installed at both ends of the connection plate 617, and slots are provided at both ends of the connection groove 619. The block and the slot are engaged with each other. Under the action of the mutual engagement, the conveying screw 5 and the push mechanism are connected more stably, which improves the stability.

[0030] According to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 7 and attached Fig. 9It can be seen that the pushing mechanism includes a fixed frame 711, a wire block 712, a limiting slide rod 713, a screw rod 714, a connecting rod 715, a first pushing block 716, a second pushing block 717 and a push rod 718. A fixed frame 711 is provided on the right side of the nozzle 1. The left side of the left connecting block 618 is welded to the right side of the fixed frame 711, and the left side of the fixed frame 711 is fixed to the wire block 712. The limiting slide rod 713 is fixed to both the upper and lower ends of the wire block 712, and the limiting slide rod 713 is engaged with the upper and lower ends of the nozzle 1. The wire block 712 is threadedly connected to the wire block 714, and a connecting rod 715 is welded to the left side of the wire block 714. A first pushing block 716 is welded to the left side of the connecting rod 715, and a second pushing block 717 is fixed to the left side of the first pushing block 716. A push rod 718 is fixedly installed on the left side of the second pushing block 717. When 12 rotates, 811 and 813 are limited by the sliding connection 820 and 821, so that the screw rod 714 moves linearly to the left, and the first push block 716 and the second push block 717 are driven to move to the left by the action of the connecting rod 715. Under the action of the push rod 718, the blockage inside the nozzle 3 can be effectively pushed out, so that the inside of the nozzle 3 is unobstructed, which improves the usability and fluency. The first push block 716 is provided with arc grooves all around, and the left side of the push rod 718 is provided with an arc notch. This design can make the first push block 716 increase the stability of the mechanism while also conveying the molten material, thereby improving the usability. The blockage can be better removed by the action of the push rod 718 under the arc shape at the upper and lower ends, thereby improving the usability and convenience, and the operation is simple and easy to use.

[0031] According to the attached Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 8It can be known that the transmission mechanism includes a push rod 811, a first chamber 812, a first rack plate 813, a first gear 814, a second gear 815, a second rack plate 816, a collecting tank 817, a limit rod 818, a holder 819, a slider 820 and a slide rail 821. The push rod 811 is fixedly installed at the bottom end of the second pushing block 717. The left bottom end of the nozzle 1 is provided with a first chamber 812, and a first rack plate 813 is arranged inside the first chamber 812. A push rod 811 is fixedly installed at the top left end of the first rack plate 813. A first gear 814 is arranged at the rear side of the first rack plate 813, and a second gear 815 is arranged at the left side of the rear end of the first gear 814. The bottom ends of the first gear 814 and the second gear 815 are both movably connected to the upper and lower inner walls of the first chamber 812 through bearings. A second rack plate 816 is arranged at the rear side of the second gear 815, and the left side of the second rack plate 816 is fixedly installed on the right side of the rear end of the collecting tank 817. A limiting rod 818 is fixed to the front end of the right side of the collecting trough 817, a holder 819 is fixed to the left side of the first chamber 812, and a second rack plate 816 is slidably connected inside the holder 819, a slider 820 is fixedly connected to the right side of the first rack plate 813, and the bottom end of the slider 820 is slidably connected to the first chamber 812 through a slide rail 821. Through this mechanism, when the push rod 811 moves to the left, the first rack plate 813 is driven to move to the left, thereby driving the first gear 814 and the second gear 815 to rotate, so that the second rack plate 816 moves quickly to the left, and the collecting trough 817 is moved outward to collect the removed materials for easy cleaning, to prevent the situation where it is difficult to clean when it falls, and to improve ease of use and convenience. A sliding groove is provided on the inner wall of the nozzle 1 to cooperate with the limiting rod 818, and the limiting rod 818 and the sliding groove are slidably connected. The smoothness and stability of the operation of the mechanism are improved through the action of the sliding groove.

[0032] According to the attached Figure 8It can be seen that the guide mechanism includes a guide plate 911, a first spring 912, a second chamber 913, a buffer plate 914 and a second spring 915. The guide plate 911 is movably connected to the front and rear ends of the left side of the collecting tank 817 through a rotating shaft, and the first spring 912 is fixed to the front and rear sides of the right bottom end of the guide plate 911. The bottom ends of the two groups of first springs 912 are fixed to the left side of the collecting tank 817. The second chamber 913 is opened at the top of the guide plate 911, and the buffer plate 914 is sleeved inside the second chamber 913. The buffer plate 914 A second spring 915 is fixed at the bottom, and the bottom end of the second spring 915 is fixed inside the second chamber 913. The left side of the guide plate 911 is designed in an arc shape, and the buffer plate 914 is designed in an inclined shape. Through this mechanism, the fallen blockages are guided under the action of the guide plate 911 and the buffer plate 914 to prevent them from falling to the ground, so that the blockages can be better collected. The guide plate 911 and the second spring 915 can buffer the fallen blockages and make them fall more smoothly, thereby improving ease of use and stability.

[0033] Working principle: when the nozzle 1 is to be repaired to prevent blocking, firstly, the rotating screw 611 is twisted, and the rotating screw 611 is moved downward under the action of the threaded connection between the nozzle 1 and the rotating screw 611, thereby driving the fixing plate 612 to move downward, and the fixing plate 612 is limited under the action of the first set of rods 613 and the second set of rods 614, and when the connecting plates 617 on both sides of the rotating rod 616 are fully inserted into the connecting block 618 and engaged with the connecting groove 619, the rotating screw 611 is stopped from being twisted, and the pushing mechanism and the conveying screw 5 are connected to each other under the action of the engagement;

[0034] When the connecting mechanism is connected to the pushing mechanism, first, the fixed frame 711 is driven to rotate under the action of the rotation of the conveying screw 5 itself, and the pushing column 715 is pushed to the left under the action of the rotation of the wire block 712 and the wire rod 714, and the wire block 712 is limited by the action of the limiting slide 713, and the limiting slide 713 can rotate inside the nozzle 1, and then, while the first pushing block 716 is pushed to the left, the second pushing block 717 and the stop rod 718 are driven to remove the inside of the nozzle 3 on the nozzle 2, and while the second pushing block 717 and the stop rod 718 move to the left, the push rod 811 is driven to move, so that the transmission mechanism rotates;

[0035] When the transmission mechanism rotates, first the first rack plate 813 moves to the left under the action of the push rod 811, thereby driving the first gear 814 to rotate, and the second gear 815 rotates under the action of the first gear 814 rotating, and the second rack plate 816 moves to the left under the action of the first gear 814 and the second gear 815 rotating in coordination with each other, pushing the collection slot 817 outward, and then the guide plate 911 is unfolded under the action of the shaft and the first spring 912 to collect the obstruction dropped from the nozzle 3, and the dropped objects are guided by the action of the buffer plate 914, and the dropped objects can be buffered under the action of the second spring 915, and the dropped objects are collected in the collection slot 817 under the cooperation of the guide plate 911;

[0036] When the nozzle 1 is to be used, the guide plate 911 is first pressed to store the guide plate 911 through the collecting groove 817, and the pushing mechanism is reset under the reverse rotation of the conveying screw 5. Then, the rotating screw 611 is twisted in the reverse direction so that the rotating screw 611 rises and drives the rotating rod 616 to move upward, so that the connection between the conveying screw 5 and the pushing mechanism is released, and finally the first rotating rod 611 is moved upward to complete the operation.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A nozzle assembly for plasticizing components of a high-tonnage injection blow molding machine, comprising a nozzle (1), a nozzle (2), a nozzle opening (3), a material delivery pipe (4) and a conveying screw (5), wherein the nozzle (2) is fixed to the left side of the nozzle (1), and the nozzle opening (3) is provided inside the nozzle (2), the right side of the nozzle (1) is connected to the material delivery pipe (4) by a thread, and the material delivery pipe (4) is provided with a conveying screw (5), characterized in that: A connecting mechanism is arranged on the right side of the nozzle (1), a pushing mechanism is arranged inside the nozzle (1), and a transmission mechanism and a flow guiding mechanism are arranged at the bottom end of the left side of the nozzle (1); The connection mechanism comprises a rotating screw (611), a fixing plate (612), a first set of rods (613), a second set of rods (614), a collar (615), a rotating rod (616), a connecting plate (617), a connecting block (618) and a connecting groove (619); the right side of the nozzle (1) is threadedly connected with the rotating screw (611), and the bottom end of the rotating screw (611) is movably connected to the fixing plate (612) via a bearing; the first set of rods (613) are welded to both sides of the top of the fixing plate (612), and the second set of rods (614) are sleeved on the outside of the first set of rods (613); the tops of the two sets of the second set of rods (614) are Welded to the inner wall of the nozzle (1), the bottom end of the fixed plate (612) is fixed with a collar (615) on both sides, and the collar (615) is movably connected to a rotating rod (616) via a bearing, and the rotating rod (616) is fixedly installed with a connecting plate (617) on both sides, and the connecting plate (617) is provided with a connecting block (618) at a position away from the center of the rotating rod (616), and the right side of the connecting block (618) is welded to the left side of the conveying screw (5), and the two groups of connecting blocks (618) are provided with connecting grooves (619) inside, and the connecting blocks (618) are mutually engaged with the connecting plates (617) through the connecting grooves (619); The pushing mechanism comprises a fixed frame (711), a thread block (712), a limiting sliding rod (713), a threaded rod (714), a connecting rod (715), a first pushing block (716), a second pushing block (717) and a stop rod (718). The fixed frame (711) is arranged on the right side of the nozzle (1). The left side of the connecting block (618) is welded to the right side of the fixed frame (711). The left side of the fixed frame (711) is fixed to the thread block (712). The thread block (712) ) A limit slide bar (713) is fixed at both the upper and lower ends, and the limit slide bar (713) is slidably connected to the inner wall of the nozzle (1), the thread block (712) is internally threadedly connected to a screw rod (714), and a connecting rod (715) is welded to the left side of the screw rod (714), a first push block (716) is welded to the left side of the connecting rod (715), and a second push block (717) is fixed to the left side of the first push block (716), and a stop rod (718) is fixedly installed on the left side of the second push block (717); The transmission mechanism comprises a push rod (811), a first chamber (812), a first rack plate (813), a first gear (814), a second gear (815), a second rack plate (816), a collecting tank (817), a limit rod (818), a holder (819), a slide block (820) and a slide rail (821); a push rod (811) is fixedly mounted on the bottom end of the second push block (717); a first chamber (812) is provided at the bottom left end of the nozzle (1), and a first rack plate (813) is arranged inside the first chamber (812); a push rod (811) is fixedly mounted on the top left end of the first rack plate (813); a first gear (814) is arranged on the rear side of the first rack plate (813); and a left side of the rear end of the first gear (814) is provided. A second gear (815) is provided, the bottom ends of the first gear (814) and the second gear (815) are both movably connected to the upper and lower inner walls of the first chamber (812) through bearings, a second rack plate (816) is provided on the rear side of the second gear (815), and the left side of the second rack plate (816) is fixedly installed on the right side of the rear end of the collecting tank (817), a limiting rod (818) is fixed to the front end of the right side of the collecting tank (817), a holder (819) is fixed on the left side of the first chamber (812), and the second rack plate (816) is slidably connected inside the holder (819), a slider (820) is fixedly connected to the right side of the first rack plate (813), and the bottom end of the slider (820) is slidably connected to the first chamber (812) through a slide rail (821); The flow guide mechanism comprises a flow guide plate (911), a first spring (912), a second chamber (913), a buffer plate (914) and a second spring (915); the left side front and rear ends of the collecting tank (817) are both movably connected to the flow guide plate (911) via a rotating shaft, and the right side bottom end front and rear sides of the flow guide plate (911) are both fixed with the first spring (912); the bottom ends of the two groups of the first springs (912) are both fixed to the left side of the collecting tank (817); the top end of the flow guide plate (911) is provided with a second chamber (913), and the second chamber (913) is sleeved with a buffer plate (914); the bottom end of the buffer plate (914) is fixed with the second spring (915), and the bottom end of the second spring (915) is fixed inside the second chamber (913); The connection plate (617) is fixedly provided with clamping blocks at both the front and rear ends, and the connection slot (619) is provided with clamping slots at both the front and rear ends, and the clamping blocks and the clamping slots are engaged with each other.

2. The nozzle assembly for plasticizing parts of a high-tonnage injection blow molding machine according to claim 1, characterized in that: The first pushing block (716) is provided with arc-shaped grooves on all sides, and the left side of the support rod (718) is provided with an arc-shaped notch.

3. The nozzle assembly for plasticizing parts of a high-tonnage injection blow molding machine according to claim 1, characterized in that: The inner wall of the nozzle (1) is provided with a slide groove that cooperates with the limiting rod (818), and the limiting rod (818) and the slide groove are slidably connected.

4. The nozzle assembly for plasticizing parts of a high-tonnage injection blow molding machine according to claim 1, characterized in that: The left side of the guide plate (911) is designed to be arc-shaped, and the buffer plate (914) is designed to be inclined.

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