Blow molding nozzle mechanism of blow molding machine

Abstract

The invention discloses a blow molding nozzle mechanism of a blow molding machine, and belongs to the technical field of blow molding machines, the blow molding nozzle mechanism comprises a first connecting plate, a feeding mechanism is fixedly connected to one side of the top surface of the first connecting plate, a mold closing mechanism is arranged at the discharging position of the feeding mechanism, and the mold closing mechanism comprises a fixed mold closing part and a movable mold closing part in sliding connection with the fixed mold closing part; the fixed mold closing part comprises a first driving piece fixedly connected with the first connecting plate, the first driving piece is in transmission connection with a fixed mold, a blow molding mechanism is arranged on the top surface of the fixed mold, the movable mold closing part comprises a second driving piece fixedly connected with the first connecting plate, the second driving piece is in transmission connection with a movable mold, and the movable mold is in sliding connection with the fixed mold. Through the cooperation of the fixed mold closing part and the movable mold closing part, the shape and the size of a cavity can be accurately controlled, the precision of a blow molding product is ensured, meanwhile, the mold closing action is stable and reliable through a sliding connection mode, the mold closing efficiency is improved, meanwhile, the blow molding mechanism can flexibly adjust the spraying position, and the requirements of different blow molding processes are met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of blow molding machines, in particular to a blow nozzle mechanism of a blow molding machine. BACKGROUND

[0002] In the field of plastic processing, blow molding is a commonly used method for manufacturing hollow plastic products. With the increasing demand for plastic products in the market, higher requirements are placed on the performance and quality of blow molding machines.

[0003] Currently, traditional blow molding machines have some problems in the blow nozzle mechanism. For example, the clamping mechanism is not accurate enough, resulting in unstable shape and size of the cavity, affecting the precision of blow molded products; the position adjustment of the blow nozzle is not flexible enough, making it difficult to meet the needs of different blow molding processes. SUMMARY

[0004] The purpose of the present application is to provide a blow nozzle mechanism of a blow molding machine to solve the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a blow nozzle mechanism of a blow molding machine, which comprises a first connecting plate, the top surface of the first connecting plate is fixedly connected with a feeding mechanism, the discharge end of the feeding mechanism is provided with a clamping mechanism, the clamping mechanism comprises a fixed clamping part and a movable clamping part which is slidingly connected with the fixed clamping part, the fixed clamping part comprises a first driving member which is fixedly connected with the first connecting plate, the first driving member is drivingly connected with a fixed mold, the top surface of the fixed mold is provided with a blow molding mechanism, the movable clamping part comprises a second driving member which is fixedly connected with the first connecting plate, the second driving member is drivingly connected with a movable mold, and the movable mold is slidingly connected with the fixed mold.

[0006] Preferably, the top surface of the fixed mold is provided with an air inlet, the blow molding mechanism comprises a second connecting plate fixedly connected to the top surface of the fixed mold, the second connecting plate is provided with a first sliding groove on the side close to the air inlet, the first sliding groove is slidingly connected with a first sliding block, the first sliding block is drivingly connected with a third driving part, the side of the first sliding block away from the second connecting plate is symmetrically fixedly connected with a first connecting seat, and two first connecting seats are slidingly connected with a nozzle on the side away from the second connecting plate, the bottom surface of the nozzle is provided with a nozzle, and the top surface of the nozzle is respectively communicated with an air pipe.

[0007] Preferably, the third driving part comprises a first motor fixedly connected with the second connecting plate, the output shaft of the first motor is fixedly connected with a first lead screw, the first lead screw is threadedly connected with the first sliding block, the side of the first lead screw away from the first motor is rotatably connected with a third connecting plate, and the third connecting plate is fixedly connected to the outside of the first sliding groove.

[0008] Preferably, the first connecting seat is provided with a first groove near one side of the spray pipe, the spray pipe is slidingly connected in the first groove, the spray pipe is provided with a second groove near one side of the first groove, the second groove is provided with a tooth, the first connecting seat is provided with a first cavity, the first cavity is in communication with the outside of the first connecting seat through a first opening, a second motor is fixedly connected in the first cavity, the output shaft of the second motor is fixedly connected with a first gear, the first gear is extended to the outside of the first opening and engaged with the tooth near one side of the first opening.

[0009] Preferably, the four corners of the fixed mold are fixedly connected with connecting rods, the connecting rods are slidingly connected with the movable mold respectively, the first driving member includes first legs symmetrically fixed on the top surface of the first connecting plate, the top surfaces of the two first legs are fixedly connected with a second connecting seat, the second connecting seat is provided with a second sliding groove near one side of the fixed mold, and the fixed mold is slidingly connected with the second sliding groove through a second sliding block.

[0010] Preferably, the first driving member further includes a fourth connecting plate, the fourth connecting plate is fixedly connected with the first leg near the feeding mechanism, the fourth connecting plate is fixedly connected with a first electric telescopic rod near one side of the fixed mold, and the first electric telescopic rod is fixedly connected with the fixed mold.

[0011] Preferably, the second driving member includes third connecting seats symmetrically fixed on the top surface of the first connecting plate, the top surfaces of the two third connecting seats are slidingly connected with a fourth connecting seat, the fourth connecting seat is provided with a third sliding groove near one side of the movable mold, and the movable mold is slidingly connected with the third sliding groove through a third sliding block.

[0012] Preferably, the top surfaces of the two third connecting seats are fixedly connected with a fifth connecting seat, the fifth connecting seat is located on the side, away from the movable mold, of the fourth connecting seat, the top surface of the fifth connecting seat is fixedly connected with a second electric telescopic rod, the output end of the second electric telescopic rod is fixedly connected with the fourth connecting seat, the top surface of the third connecting seat is provided with a fourth sliding groove, the bottom surface of the fourth connecting seat is symmetrically fixedly connected with fourth sliding blocks, and the fourth sliding blocks are slidingly connected with the fourth sliding grooves adjacent thereto.

[0013] Preferably, the feeding mechanism includes a driving box fixedly connected to the top surface of the first connecting plate, the driving box is drivingly connected with a driving rod, the driving rod is drivingly connected in a transmission cylinder, the top of the transmission cylinder is communicated with a storage tank, one side, away from the driving rod, of the transmission cylinder is communicated with a discharge port, the discharge port is located above the mold closing mechanism, the two sides of the transmission cylinder are symmetrically fixedly connected with second legs, and the second legs are fixedly connected with the top surface of the first connecting plate.

[0014] Preferably, the bottom surface of the first connecting plate is fixed with a third leg at each corner.

[0015] The application discloses the following technical effects: when the blow molding machine is running, the feeding mechanism delivers the plastic raw material to the mold closing mechanism, the first driving member drives the fixed mold, the second driving member drives the movable mold, the movable mold is slidably connected with the fixed mold and the mold is closed, the blow molding cavity is formed, and then the blow molding mechanism is used for blow molding. Through the cooperation of the fixed mold closing part and the movable mold closing part, the shape and size of the cavity can be accurately controlled, the precision of the blow molding product is guaranteed, the mold closing action is stable and reliable in a sliding connection mode, the mold closing efficiency is improved, the blow molding mechanism can flexibly adjust the injection position, and the requirements of different blow molding processes can be met. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide further understanding of the present application, the embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a structure schematic view of the blow nozzle mechanism of the blow molding machine of the present application;

[0018] Figure 2 It is another angle structure schematic view of the blow nozzle mechanism of the blow molding machine of the present application;

[0019] Figure 3 It is a partial enlarged view of A in the present application Figure 2

[0020] Figure 4 It is an internal structure schematic view of the first connecting seat of the present application;

[0021] Figure 5 It is a side view of the present application.

[0022] ​In the figure: 1, the first connecting plate; 2, the fixed mold; 3, the movable mold; 4, the air inlet; 5, the second connecting plate; 6, the first sliding groove; 7, the first sliding block; 8, the first connecting seat; 9, the spray pipe; 10, the nozzle; 11, the air pipe; 12, the first motor; 13, the first lead screw; 14, the third connecting plate; 15, the first groove; 16, the second groove; 17, the tooth; 18, the first cavity; 19, the first opening; 20, the second motor; 21, the first gear; 22, the connecting rod; 23, the first leg; 24, the second connecting seat; 25, the second sliding groove; 26, the second sliding block; 27, the fourth connecting plate; 28, the first electric telescopic rod; 29, the third connecting seat; 30, the fourth connecting seat; 31, the third sliding groove; 32, the third sliding block; 33, the fifth connecting seat; 34, the second electric telescopic rod; 35, the fourth sliding groove; 36, the drive box; 37, the drive rod; 38, the storage tank; 39, the transmission cylinder; 40, the discharge port; 41, the second leg; 42, the third leg. DETAILED DESCRIPTION

[0023] Current mainstream blow molding processes include three major categories: extrusion blow molding (EBM), injection blow molding (IBM) and injection stretch blow molding (ISBM):

[0024] Extrusion blow molding: Forming tubular parisons through extruders, suitable for producing large containers (such as 5-gallon water buckets), with the advantages of low equipment cost and flexible production capacity.

[0025] Injection blow molding: First injection molding parisons and then blow molding, with better uniformity of product wall thickness, widely used in the field of pharmaceutical packaging.

[0026] Stretch blow molding: Introducing a two-way stretching process during blow molding, significantly improving the transparency, strength and barrier properties of the product, with typical applications for PET beverage bottle production.

[0027] A typical nozzle mechanism consists of five functional modules:

[0028] Melt delivery system: Optimize melt flow characteristics through channel design, open nozzles suitable for low viscosity materials, long conical nozzles designed for high viscosity materials (such as PVC).

[0029] Opening and closing control mechanism: Self-locking nozzles use spring-needle structure, hydraulic nozzles achieve precise opening and closing through cylinder drive.

[0030] Gas injection assembly: Including air inlet, spray pipe and nozzle head, nozzle caliber design needs to consider pressure loss and shear heating effect.

[0031] Temperature control unit: Built-in heater and thermocouple in hot runner nozzle, maintain melt temperature stability.

[0032] Sealing and Anti-overflow Device: Adopt spherical sealing structure, cooperate with anti-saliva ring to prevent melt leakage during pre-plastic stage.

[0033] Process stability problem

[0034] Melt flow control defects:

[0035] Problem: High viscosity materials (such as HIPS) are prone to melt rupture at flow channel turns, resulting in product surface flow marks.

[0036] Case: A packaging enterprise producing 5L detergent bottles had a high rejection rate of 8% due to unreasonable flow channel design.

[0037] Temperature fluctuation impact:

[0038] Data: Nozzle temperature fluctuation ±5℃ can cause PET bottle blank transmittance to decrease by 12%.

[0039] Solution: Use PID control algorithm combined with infrared temperature measurement to control temperature fluctuation within ±1℃.

[0040] Equipment precision limitations

[0041] Nozzle coaxiality error:

[0042] Standard requirement: Nozzle spherical surface and mold gate coaxiality ≤0.05mm

[0043] Industry status: Domestic equipment average coaxiality 0.12mm, leading to 3 times increase in material overflow risk.

[0044] Wall thickness control technology gap:

[0045] Comparison: Imported equipment axial wall thickness control precision ±0.1mm, domestic equipment ±0.3mm

[0046] Cost: A domestic equipment used by an automobile fuel tank production enterprise increased raw material loss rate by 2.5%.

[0047] Production efficiency bottleneck

[0048] Color change cleaning time-consuming:

[0049] Problem: Traditional nozzle structure cleaning time is as long as 45-60 minutes

[0050] Innovation: Modular quick-change nozzle system can shorten cleaning time to 15 minutes.

[0051] Energy consumption management challenge:

[0052] Data: Hot runner system energy consumption accounts for 25%-35% of the whole machine

[0053] Breakthrough direction: Develop waste heat recovery device, theoretical energy saving potential up to 18%.

[0054] The technical development of blow nozzle mechanisms is undergoing a profound transformation from mechanical control to intelligent control, from single function to composite function, and from experience-driven to data-driven. In the face of industry trends such as material diversification, product precision, and production greenization, future technical breakthroughs in nozzle mechanisms will focus on: 1) building a digital twin model for virtual debugging; 2) developing adaptive control algorithms to cope with material property fluctuations; and 3) promoting the application of 3D printing technology in complex flow channel manufacturing. These innovations will drive the evolution of blow molding technology towards greater efficiency, precision, and sustainability.

[0055] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0056] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments.

[0057] Referring to Figures 1-5 The present embodiment provides a blow nozzle mechanism of a blow molding machine, which comprises a first connecting plate 1, a feeding mechanism is fixedly connected to one side of the top surface of the first connecting plate 1, a mold closing mechanism is arranged at the discharge of the feeding mechanism, the mold closing mechanism comprises a fixed mold closing part and a movable mold closing part which is slidingly connected with the fixed mold closing part, the fixed mold closing part comprises a first driving member which is fixedly connected with the first connecting plate 1, the first driving member is drivingly connected with a fixed mold 2, the top surface of the fixed mold 2 is provided with a blow molding mechanism, the movable mold closing part comprises a second driving member which is fixedly connected with the first connecting plate 1, the second driving member is drivingly connected with a movable mold 3, and the movable mold 3 is slidingly connected with the fixed mold 2.

[0058] When the blow molding machine is running, the feeding mechanism delivers plastic raw materials to the mold closing mechanism, the first driving member drives the fixed mold 2, and the second driving member drives the movable mold 3, so that the movable mold 3 is slidingly connected with the fixed mold 2 and the mold is closed, forming a blow molding cavity, and then blow molding is performed through the blow molding mechanism. Through the cooperation of the fixed mold closing part and the movable mold closing part, the shape and size of the cavity can be accurately controlled to ensure the precision of the blow molding product. At the same time, the sliding connection mode makes the mold closing action stable and reliable, improving the mold closing efficiency. At the same time, the blow molding mechanism can flexibly adjust the injection position to meet the needs of different blow molding processes.

[0059] Further optimization scheme, the top surface of the fixed mold 2 is provided with an air inlet 4, the blowing mechanism comprises a second connecting plate 5 fixedly connected to the top surface of the fixed film, the second connecting plate 5 is provided with a first sliding groove 6 on the side close to the air inlet 4, the first sliding groove 6 is slidably connected with a first sliding block 7, the first sliding block 7 is drivingly connected with a third driving part, the side of the first sliding block 7 away from the second connecting plate 5 is symmetrically fixedly connected with a first connecting seat 8, two first connecting seats 8 are slidably connected with a spray pipe 9 on the side away from the second connecting plate 5, the bottom surface of the spray pipe 9 is provided with a nozzle 10, and the top surface of the spray pipe 9 is respectively communicated with an air pipe 11.

[0060] When blowing, the gas enters from the air inlet 4, the third driving part drives the first sliding block 7 to slide in the first sliding groove 6, drives the first connecting seat 8 to move, and then drives the spray pipe 9 to move to the appropriate position, the gas enters the spray pipe 9 through the air pipe 11, and finally is sprayed out from the nozzle 10 to blow the plastic in the cavity. The position of the spray pipe 9 can be flexibly adjusted to ensure that the blowing gas can uniformly and accurately act on the plastic raw material, thereby improving the blowing quality, and the setting of the nozzle 10 enables the gas to be concentratedly sprayed, thereby enhancing the blowing effect.

[0061] Further optimization scheme, the third driving part comprises a first motor 12 fixedly connected with the second connecting plate 5, the output shaft of the first motor 12 is fixedly connected with a first lead screw 13, the first lead screw 13 is threadedly connected with the first sliding block 7, and the side of the first lead screw 13 away from the first motor 12 is rotatably connected with a third connecting plate 14, and the third connecting plate 14 is fixedly connected to the outside of the first sliding groove 6.

[0062] The first motor 12 is started to drive the first lead screw 13 to rotate, since the first lead screw 13 is threadedly connected with the first sliding block 7 and the side of the first lead screw 13 away from the first motor 12 is rotatably connected with the third connecting plate 14, the first sliding block 7 is driven to slide in the first sliding groove 6. Through the lead screw transmission mode, the accurate movement of the first sliding block 7 can be realized, the position adjustment of the spray pipe 9 is more accurate, and the precision and stability of the blowing process are improved.

[0063] Further optimization scheme, the side of the first connecting seat 8 close to the spray pipe 9 is provided with a first recess 15, the spray pipe 9 is slidably connected in the first recess 15, the side of the spray pipe 9 close to the first recess 15 is provided with a second recess 16, the second recess 16 is provided with a tooth 17, the first connecting seat 8 is provided with a first cavity 18, the first cavity 18 is communicated with the outside of the first connecting seat 8 through a first opening 19, the first cavity 18 is fixedly connected with a second motor 20, the output shaft of the second motor 20 is fixedly connected with a first gear 21, the side of the first gear 21 close to the first opening 19 extends to the outside of the first opening 19 and is meshed with the tooth 17.

[0064] The second motor 20 drives the first gear 21 to rotate, and the first gear 21 drives the nozzle 9 to slide in the first groove 15 through the meshing with the teeth 17. The position of the nozzle 9 can be further adjusted to fine-tune the blowing gas injection position, meet the needs of different blowing processes, and improve the flexibility and adaptability of the blow molding. Two nozzles 9 are used for blowing and cooling after blowing.

[0065] Further optimization scheme, the four corners of the fixed mold 2 are respectively fixedly connected with connecting rods 22, and the connecting rods 22 are respectively in sliding connection with the movable mold 3. The first driving member includes first legs 23 symmetrically fixed on the top surface of the first connecting plate 1. The top surfaces of the two first legs 23 are fixedly connected with second connecting seats 24. The second connecting seats 24 are provided with second sliding grooves 25 on the side close to the fixed mold 2. The fixed mold 2 is in sliding connection with the second sliding grooves 25 through second sliding blocks 26.

[0066] When the first driving member works, the first electric telescopic rod 28 is telescopic to push the fixed mold 2 to slide in the second sliding grooves 25 of the second connecting seats 24 through the second sliding blocks 26. At the same time, the connecting rods 22 guide the movable mold 3, so that the movable mold 3 and the fixed mold 2 maintain correct relative positions for mold closing. The connecting rods 22 ensure the sliding connection precision of the movable mold 3 and the fixed mold 2. The structure of the first driving member makes the movement of the fixed mold 2 stable, improves the accuracy and stability of mold closing, and is beneficial to ensuring the quality of blow molding products.

[0067] Further optimization scheme, the first driving member further includes a fourth connecting plate 27. The fourth connecting plate 27 is fixedly connected with the first leg 23 close to the feeding mechanism. The fourth connecting plate 27 is fixedly connected with the first electric telescopic rod 28 on the side close to the fixed mold 2. The first electric telescopic rod 28 is fixedly connected with the fixed mold 2.

[0068] When it is necessary to adjust the position of the fixed mold 2, the first electric telescopic rod 28 is telescopic to push the fixed mold 2 to move. In this way, the position of the fixed mold 2 can be accurately controlled, the cavity of the mold closing mechanism can be conveniently adjusted, and the adaptability and production efficiency of the blow molding machine are improved.

[0069] Further optimization scheme, the second driving member includes third connecting seats 29 symmetrically fixed on the top surface of the first connecting plate 1. The top surfaces of the two third connecting seats 29 are in sliding connection with fourth connecting seats 30. The fourth connecting seats 30 are provided with third sliding grooves 31 on the side close to the movable mold 3. The movable mold 3 is in sliding connection with the third sliding grooves 31 through third sliding blocks 32.

[0070] When the second driving member works, the fourth connecting seats 30 are in sliding connection with the third sliding grooves 31 of the third connecting seats 29 through the third sliding blocks 32 to drive the movable mold 3 to move.

[0071] Further optimization scheme, the top surface of the two third connecting bases 29 is fixedly connected with a fifth connecting base 33, the fifth connecting base 33 is located on the side of the fourth connecting base 30 away from the movable mold 3, the top surface of the fifth connecting base 33 is fixedly connected with a second electric telescopic rod 34, the output end of the second electric telescopic rod 34 is fixedly connected with the fourth connecting base 30, and the top surface of the third connecting base 29 is provided with a fourth sliding groove 35.

[0072] The second electric telescopic rod 34 is telescopic, the fourth connecting base 30 is driven to move, the fourth sliding block on the bottom surface of the fourth connecting base 30 slides in the fourth sliding groove 35 on the top surface of the third connecting base 29, so that the movable mold 3 is driven to move, and the mold closing and mold opening of the fixed mold 2 are realized. Through the driving of the second electric telescopic rod 34, the movable mold 3 can be quickly and accurately moved, and the stability of movement is guaranteed through the cooperation of the fourth sliding block and the fourth sliding groove 35, and the performance of the mold closing mechanism is improved.

[0073] Further optimization scheme, the feeding mechanism comprises a driving box 36 fixedly connected to the top surface of the first connecting plate 1, the driving box 36 is in transmission connection with a driving rod 37, the driving rod 37 is in transmission connection in a transmission cylinder 39, the top of the transmission cylinder 39 is communicated with a storage tank 38, one side of the transmission cylinder 39 away from the driving rod 37 is communicated with a discharge port 40, and the discharge port 40 is located above the mold closing mechanism.

[0074] The driving box 36 drives the driving rod 37 to rotate in the transmission cylinder 39, so that the plastic raw materials in the storage tank 38 are conveyed to the discharge port 40, and the discharge port 40 conveys the plastic raw materials to the mold closing mechanism. In this way, the plastic raw materials can be stably conveyed, the continuity of the blow molding process is guaranteed, the production efficiency is improved, and the position of the discharge port 40 ensures that the plastic raw materials can be accurately conveyed to the mold closing mechanism.

[0075] Further optimization scheme, the bottom surface of the first connecting plate 1 is fixedly connected with third supporting legs 42 at four corners.

[0076] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0077] The above described embodiments are only to illustrate the preferred modes of the present application, and are not intended to limit the scope of the present application. Any modification and improvement made by those skilled in the art to the technical solutions of the present application without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A blow molding nozzle mechanism for a blow molding machine, characterized in that: The system includes a first connecting plate (1), a feeding mechanism fixedly connected to one side of the top surface of the first connecting plate (1), a mold closing mechanism provided at the discharge end of the feeding mechanism, the mold closing mechanism including a fixed mold closing part and a movable mold closing part slidably connected to the fixed mold closing part, the fixed mold closing part including a first driving member fixedly connected to the first connecting plate (1), the first driving member being drivenly connected to a fixed mold (2), the top surface of the fixed mold (2) being provided with a blow molding mechanism, the movable mold closing part including a second driving member fixedly connected to the first connecting plate (1), the second driving member being drivenly connected to a movable mold (3), the movable mold (3) being slidably connected to the fixed mold (2).

2. The blow molding nozzle mechanism of the blow molding machine according to claim 1, characterized in that: The top surface of the fixed mold (2) is provided with an air inlet (4). The blow molding mechanism includes a second connecting plate (5) fixed to the top surface of the fixed mold. The second connecting plate (5) is provided with a first sliding groove (6) on the side near the air inlet (4). A first slider (7) is slidably connected in the first sliding groove (6). The first slider (7) is drivenly connected to a third driving part. A first connecting seat (8) is symmetrically fixed to the side of the first slider (7) away from the second connecting plate (5). A nozzle (9) is slidably connected to the side of the two first connecting seats (8) away from the second connecting plate (5). A nozzle (10) is provided on the bottom surface of the nozzle (9). An air pipe (11) is connected to the top surface of the nozzle (9).

3. The blow molding nozzle mechanism of the blow molding machine according to claim 2, characterized in that: The third drive unit includes a first motor (12) fixedly connected to the second connecting plate (5). The output shaft of the first motor (12) is fixedly connected to a first lead screw (13). The first lead screw (13) is threadedly connected to the first slider (7). A third connecting plate (14) is rotatably connected to the side of the first lead screw (13) away from the first motor (12). The third connecting plate (14) is fixedly connected to the outside of the first slide groove (6).

4. The blow molding nozzle mechanism of the blow molding machine according to claim 2, characterized in that: The first connecting seat (8) has a first groove (15) on the side near the nozzle (9), the nozzle (9) is slidably connected in the first groove (15), the nozzle (9) has a second groove (16) on the side near the first groove (15), the second groove (16) has teeth (17) in it, the first connecting seat (8) has a first cavity (18) in it, the first cavity (18) communicates with the outside of the first connecting seat (8) through a first opening (19), a second motor (20) is fixedly connected in the first cavity (18), the output shaft of the second motor (20) is fixedly connected to a first gear (21), the first gear (21) extends out to the outside of the first opening (19) on the side near the first opening (19) and meshes with the teeth (17).

5. The blow molding nozzle mechanism of the blow molding machine according to claim 1, characterized in that: The fixed mold (2) has connecting rods (22) fixedly connected to its four corners respectively. The connecting rods (22) are slidably connected to the movable mold (3). The first driving component includes first legs (23) symmetrically fixed to the top surface of the first connecting plate (1). The top surfaces of the two first legs (23) are fixedly connected to second connecting seats (24). The second connecting seat (24) has a second sliding groove (25) on the side near the fixed mold (2). The fixed mold (2) is slidably connected to the second sliding groove (25) through the second slider (26).

6. The blow molding nozzle mechanism of the blow molding machine according to claim 5, characterized in that: The first driving component also includes a fourth connecting plate (27), which is fixedly connected to the first support leg (23) near the feeding mechanism. A first electric telescopic rod (28) is fixedly connected to the side of the fourth connecting plate (27) near the fixed mold (2), and the first electric telescopic rod (28) is fixedly connected to the fixed mold (2).

7. The blow molding nozzle mechanism of the blow molding machine according to claim 1, characterized in that: The second driving component includes a third connecting seat (29) symmetrically fixed to the top surface of the first connecting plate (1), and a fourth connecting seat (30) slidably connected to the top surfaces of the two third connecting seats (29). The fourth connecting seat (30) has a third sliding groove (31) on the side near the movable mold (3), and the movable mold (3) is slidably connected to the third sliding groove (31) through a third slider (32).

8. The blow molding nozzle mechanism of the blow molding machine according to claim 7, characterized in that: A fifth connecting seat (33) is fixedly connected to the top surface of the two third connecting seats (29). The fifth connecting seat (33) is located on the side of the fourth connecting seat (30) away from the movable mold (3). A second electric telescopic rod (34) is fixedly connected to the top surface of the fifth connecting seat (33). The output end of the second electric telescopic rod (34) is fixedly connected to the fourth connecting seat (30). A fourth sliding groove (35) is provided on the top surface of the third connecting seat (29). A fourth slider is symmetrically fixed to the bottom surface of the fourth connecting seat (30). The fourth slider and the adjacent fourth sliding groove (35) are slidably connected.

9. The blow molding nozzle mechanism of the blow molding machine according to claim 1, characterized in that: The feeding mechanism includes a drive box (36) fixed to the top surface of the first connecting plate (1). The drive box (36) is driven by a drive rod (37). The drive rod (37) is driven by a transmission cylinder (39). The top of the transmission cylinder (39) is connected to a storage tank (38). The side of the transmission cylinder (39) away from the drive rod (37) is connected to a discharge port (40). The discharge port (40) is located above the mold closing mechanism. The two sides of the transmission cylinder (39) are symmetrically fixed with second legs (41). The second legs (41) are fixed to the top surface of the first connecting plate (1).

10. The blow molding nozzle mechanism of the blow molding machine according to claim 1, characterized in that: The bottom corners of the first connecting plate (1) are respectively fixed with third legs (42).

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