CN218053879U - BFS plastic bottle filling production integrated equipment and adjustable extrusion die head thereof - Google Patents

Abstract

The utility model discloses an adjustable extrusion die head, including the feeding seat, with the main mould body of feeding seat intercommunication, insert and locate interior die sleeve, the slidable of main mould body insert the movable unloading cover of locating in interior die sleeve, connect in the outer die sleeve of main mould body bottom, and set up in on the main mould body, be used for driving through screw drive the movable unloading cover carries out vertical elevating movement's lever actuating mechanism, the inner wall of interior die sleeve with leave the gap as the runner between the outer wall of movable unloading cover, the top of outer die sleeve seted up with the unloading chute of runner intercommunication, the bottom of movable unloading cover be provided with be used for with unloading chute complex keeps off the material slope, with adjust during the elevating movement of movable unloading cover the unloading chute with the clearance that keeps off the material slope. The utility model discloses can realize the flow control of melting material in the pipe runner. The utility model discloses still disclose a BFS plastic bottle filling production integrated equipment, its beneficial effect as above.

Description

BFS plastic bottle filling production integrated equipment and adjustable extrusion die head thereof

Technical Field

The utility model relates to an extrusion moulding technical field, in particular to adjustable extrusion die head. The utility model discloses still relate to a BFS plastic bottle filling production integrated equipment.

Background

BFS (Blow-Fill-Seal) is a plastic bottle filling production integrated device, i.e. a processing device integrating three functions of blowing, filling and sealing, and is usually used for aseptic packaging of plastic bottles, and the device can intensively complete the three operations of blowing, filling and sealing in an aseptic state.

The extruder is one of the important components of a bottle blowing mechanism in BFS equipment, the extrusion die head is the core component of the extruder, the mechanical property and the appearance quality of products, the uniformity among batches of finished products, the production efficiency and the economical efficiency of forming processing are greatly influenced, and the stability of canning and sealing of pharmaceutical-grade products has great relation to the integral yield and whether the products are qualified.

At present, in an extrusion die head device of a traditional extruder, after materials in a molten state enter each tube blank channel from a machine body, the materials are gradually extruded through a die, and the shape and the structure of the die are fixed when the die leaves a factory, so that the discharge flow of the extrusion die head is kept fixed, and the discharge flow of a plurality of tube blank channels is kept consistent theoretically. However, due to the influence of factors such as manufacturing and processing errors, the uniformity of the roughness and the processing precision of the flow channel where each tube blank is located cannot be guaranteed, and the uniformity of the temperature of each tube blank also causes that the flow rate of the molten material in each tube blank is difficult to keep consistent in practice. In addition, in the actual production process, the extruder may need to simultaneously produce a plurality of products with different types and different specifications, different products may need to use different flow rates, and the extrusion die head with fixed flow rate in the prior art cannot be sufficient.

Therefore, how to realize the flow regulation of the molten material in the tube blank flow passage is a technical problem faced by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adjustable extrusion die head can realize the flow control of melting material in the pipe runner. Another object of the utility model is to provide a BFS plastic bottle filling production integrated equipment.

For solving the technical problem, the utility model provides an adjustable extrusion die head, including the feeding seat, with the master mould body of feeding seat intercommunication, insert and locate interior die sleeve, slidable in the master mould body insert and locate movable unloading cover in the interior die sleeve, connect in the outer die sleeve of master mould body bottom, and set up in on the master mould body, be used for driving through screw drive the movable unloading cover carries out vertical elevating movement's lever drive mechanism, the inner wall of interior die sleeve with leave the gap as the runner between the outer wall of movable unloading cover, the top of outer die sleeve seted up with the unloading chute of runner intercommunication, the bottom of movable unloading cover be provided with be used for with unloading chute complex keeps off the material slope, so adjust during the activity unloading cover elevating movement the unloading chute with the clearance that keeps off the material slope.

Preferably, the device further comprises a fixed blanking sleeve which is fixedly inserted into the main die body and is positioned at a preset height position, so as to serve as an adjusting standard of the movable blanking sleeve when the movable blanking sleeve performs vertical lifting motion.

Preferably, the lever driving mechanism includes an upper mounting plate erected above the top end of the main mold body, a butt ring sleeved on the top end of the movable blanking sleeve, an adjusting stud erected on the top end of the main mold body, a pressing adjusting nut sleeved on the top end of the adjusting stud, a jacking adjusting nut sleeved on the bottom end of the adjusting stud, a pressing lever with one end rotatably connected to the upper mounting plate and the other end sleeved on the adjusting stud, and a jacking lever with one end rotatably connected to the main mold body and the other end sleeved on the adjusting stud, wherein the rod body of the pressing lever is in ball joint with the top end face of the butt ring, and the rod body of the jacking lever is in ball joint with the bottom end face of the butt ring.

Preferably, the adjusting stud comprises an upper thread area located at the axial top end, a lower thread area located at the axial bottom end, and a polished rod area located at the axial middle part, the pressing adjusting nut is matched with the upper thread area, the jacking adjusting nut is matched with the lower thread area, and the pressing lever and the jacking lever are sleeved on the polished rod area.

Preferably, one end of the pressing lever is in ball joint with the bottom surface of the upper mounting plate, and one end of the jacking lever is in ball joint with the end surface of the top end of the main die body.

Preferably, the blanking device further comprises a mandrel inserted into the movable blanking sleeve in a vertically slidable manner, and a wall thickness adjusting mechanism arranged on the main die body and used for driving the mandrel to perform vertical lifting motion, wherein an adjusting cone is arranged at the bottom end of the mandrel, and a discharge cone groove matched with the adjusting cone is formed in the bottom end of the outer die sleeve, so that a gap between the adjusting cone and the discharge cone groove is adjusted when the mandrel performs lifting motion.

Preferably, the outer wall of the top of the mandrel is provided with threads and forms a screw rod, and the wall thickness adjusting mechanism comprises a transmission nut which is rotatably arranged at the top end of the main die body and forms thread transmission with the screw rod.

Preferably, the wall thickness adjusting mechanism further comprises a nut mounting seat arranged at the top end of the main die body and used for positioning and mounting the transmission nut so as to limit the vertical movement freedom degree of the transmission nut.

Preferably, the top end of the mandrel is provided with an air inlet communicated with an air inlet joint, and the bottom end of the adjusting cone is provided with an air outlet communicated with the air inlet.

The utility model also provides a BFS plastic bottle filling production integrated equipment, construct and seal the mechanism including bottle blowing mechanism, filling, wherein, be provided with adjustable extrusion die among the bottle blowing mechanism, just adjustable extrusion die specifically is above-mentioned arbitrary item adjustable extrusion die.

The utility model provides an adjustable extrusion die head mainly includes feeding seat, die body, interior die sleeve, activity unloading cover, outer die sleeve and lever actuating mechanism. The feeding seat is mainly used for introducing molten materials into the main die body to realize feeding. The main die body is a main body structure of the extrusion die head, is mainly used for installing and containing other parts, is internally provided with a plurality of tube blanks and is communicated with the feeding seat, so that molten materials enter each tube blank through the feeding seat respectively. The inner die sleeve is inserted into each tube blank in the main die body and is mainly used for guiding the molten material to flow directionally in the tube blank. The movable blanking sleeve is also inserted into each tube blank in the main die body, is specifically inserted into the inner die sleeve, and keeps a certain gap with the inner wall of the inner die sleeve, so that an annular gap is formed between the outer wall of the movable blanking sleeve and the inner wall of the inner die sleeve, and the gap is communicated with the feeding seat and mainly used as a flow channel for molten materials in the tube blank. The outer die sleeve is connected to the bottom of the main die body and is a die part of the extrusion die head, and the molten material is discharged and molded through the outer die sleeve. The lever driving mechanism is arranged on the main die body, the output end of the lever driving mechanism is connected with the movable blanking sleeve, and the lever driving mechanism is mainly used for driving the movable blanking sleeve to vertically lift and move in the tube blank in a thread transmission mode. Importantly, a discharging chute is arranged at the top end of the outer die sleeve, and a notch of the discharging chute is communicated with an outlet of the flow channel so that the molten material enters the discharging chute through the flow channel. Simultaneously, be provided with in the bottom of unloading cover and keep off the material slope, should keep off material slope mainly used and the cooperation of unloading chute: when the lever driving mechanism drives the movable blanking sleeve to vertically move downwards, the slope surface of the material blocking slope gradually approaches the groove wall of the blanking chute, the gap between the slope surface and the groove wall gradually becomes smaller, which is equivalent to the narrowing of a flow passage, so that the material flow is reduced; when the lever driving mechanism drives the movable discharging sleeve to vertically rise, the slope surface of the material blocking slope is gradually far away from the groove wall of the discharging chute, the gap between the slope surface and the groove wall is gradually increased, which is equivalent to the widening of the flow channel, so that the material flow is improved. Therefore, the utility model provides an adjustable extrusion die head, screw transmission through lever actuating mechanism carries out vertical elevating movement with power transmission to activity unloading cover in the pipe with the activity unloading cover to in-process that the unloading cover carried out elevating movement in the activity, the clearance of the material stopping slope of the synchronous change activity unloading cover and the unloading chute of outer die sleeve, and then the volume size of synchronous change runner realizes the flow control of melting material in the pipe runner.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of a specific embodiment of the present invention.

Fig. 2 isbase:Sub>A schematic view ofbase:Sub>A-base:Sub>A cross-sectional structure shown in fig. 1.

Fig. 3 is an enlarged schematic view of the middle structure of fig. 2.

Fig. 4 is an enlarged schematic view of the bottom structure of fig. 2.

Fig. 5 is an enlarged schematic view of the top structure of fig. 2.

Fig. 6 is a schematic view of a cross-sectional structure B-B shown in fig. 1.

Fig. 7 is a partial structural view of fig. 6.

Wherein, in fig. 1-7:

a flow channel-a;

a feeding seat-1, a main mold body-2, an inner mold sleeve-3, a movable blanking sleeve-4, an outer mold sleeve-5, a lever driving mechanism-6, a fixed blanking sleeve-7, a mandrel-8 and a wall thickness adjusting mechanism-9;

the device comprises a material blocking slope-41, a blanking chute-51, a discharging conical groove-52, an upper mounting plate-61, a butting ring-62, an adjusting stud-63, a downward pressing adjusting nut-64, a jacking adjusting nut-65, a downward pressing lever-66, a jacking lever-67, an adjusting cone-81, a screw rod-82, an air inlet-83, an air outlet-84, a transmission nut-91 and a nut mounting seat-92;

upper thread zone-631, lower thread zone-632, polish rod zone-633.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 7, fig. 1 isbase:Sub>A schematic view of an overall structure of an embodiment of the present invention, fig. 2 isbase:Sub>A schematic view ofbase:Sub>A-base:Sub>A cross-sectional structure shown in fig. 1, fig. 3 is an enlarged schematic view ofbase:Sub>A middle structure of fig. 2, fig. 4 is an enlarged schematic view ofbase:Sub>A bottom structure of fig. 2, fig. 5 is an enlarged schematic view ofbase:Sub>A top structure of fig. 2, fig. 6 isbase:Sub>A schematic view ofbase:Sub>A B-B cross-sectional structure shown in fig. 1, and fig. 7 isbase:Sub>A schematic view ofbase:Sub>A partial structure of fig. 6.

The utility model provides an among the specific embodiment, adjustable extrusion die head mainly includes feeding seat 1, fundamental mode body 2, interior die sleeve 3, activity unloading cover 4, outer die sleeve 5 and lever actuating mechanism 6.

Wherein, the feeding base 1 is mainly used for introducing molten materials into the main mold body 2 to realize feeding.

The main die body 2 is a main body structure of the extrusion die head, is mainly used for installing and containing other parts, is internally provided with a plurality of tube blanks, and is communicated with the feeding seat 1, so that molten materials enter each tube blank through the feeding seat 1.

The inner die sleeve 3 is inserted into each tube blank in the main die body 2 and is mainly used for guiding the molten material to flow directionally in the tube blank. Generally, an arc-shaped annular groove is formed in the outer wall of the inner die sleeve 3 and is communicated with the feeding seat 1, so that the molten materials are uniformly mixed in the arc-shaped annular groove and reach a certain pressure, and then flow upwards to the inner wall of the inner die sleeve 3 through the top end port of the inner die sleeve 3. Specifically, the top end port of the inner jacket 3 may be curved to smoothly pass and flow the molten material to the inner wall side of the inner jacket 3.

The movable blanking sleeve 4 is also inserted into each tube blank in the main die body 2, specifically inserted into the inner die sleeve 3, and keeps a certain gap with the inner wall of the inner die sleeve 3, so that an annular gap is formed between the outer wall of the movable blanking sleeve 4 and the inner wall of the inner die sleeve 3, and the gap is communicated with the feeding seat 1 and mainly used as a flow channel a of a molten material in the tube blank.

The outer die sleeve 5 is connected to the bottom of the main die body 2 and is a die part of the extrusion die head, and the molten material is discharged and molded through the outer die sleeve 5.

The lever driving mechanism 6 is arranged on the main die body 2, the output end of the lever driving mechanism is connected with the movable blanking sleeve 4, and the lever driving mechanism is mainly used for driving the movable blanking sleeve 4 to perform vertical lifting motion in the tube blank in a thread transmission mode.

Importantly, a discharging chute 51 is opened at the top end of the outer die sleeve 5, and the notch of the discharging chute 51 is communicated with the outlet of the flow channel a, so that the molten material enters the discharging chute 51 through the flow channel a. Simultaneously, be provided with in the bottom of unloading cover and keep off material slope 41, should keep off material slope 41 mainly used and unloading chute 51 cooperation: when the lever driving mechanism 6 drives the movable blanking sleeve 4 to vertically move downwards, the slope surface of the material blocking slope 41 gradually approaches the wall of the blanking chute 51, the gap between the slope surface and the blanking chute gradually becomes smaller, namely the flow channel a becomes narrower, so that the material flow is reduced; when the lever driving mechanism 6 drives the movable blanking sleeve 4 to vertically rise, the slope surface of the material blocking slope 41 is gradually far away from the groove wall of the blanking chute 51, the gap between the material blocking slope and the blanking chute is gradually increased, which is equivalent to the widening of the flow channel a, so that the material flow is improved.

So, the adjustable extrusion die that this embodiment provided, through lever actuating mechanism 6's screw transmission with power transmission to activity unloading cover 4, drive activity unloading cover 4 and carry out vertical elevating movement in the pipe to in-process that the elevating movement was carried out to activity unloading cover 4, the synchronous clearance that changes the fender material slope 41 of activity unloading cover 4 and the unloading chute 51 of outer die sleeve 5, and then the volume size of synchronous change runner a, realize the flow control of melting material in pipe runner a.

Considering that most of BFS equipment adopts an extrusion die head with "one inlet and one outlet and four outlets (or tube blanks), when adjusting the flow rate, because only adjusting the flow rate of one outlet may also affect the whole body for the molten material, and there is no reference when adjusting the flow rate, which easily results in long time consumption for adjusting the flow rate in each tube blank, and more waste of material due to repeated adjustments, for this reason, this embodiment implements a reference adjustment method of" one adjustment and three adjustment "on the extrusion die head, and specifically adds a fixed blanking sleeve 7.

The fixed blanking sleeve 7 is fixedly inserted into the main die body 2 and is fixedly connected with the main die body 2, namely the height position of the fixed blanking sleeve 7 in the main die body 2 is fixed and unchanged, so that the fixed blanking sleeve can be used as an adjusting standard when the movable blanking sleeve 4 performs vertical lifting movement. Generally, a fixed blanking sleeve 7 is inserted into one of the tube blanks in the main mold body 2, and the movable blanking sleeves 4 are inserted into the other three tube blanks, and the vertical lifting motion adjustment of the three movable blanking sleeves 4 can be determined according to the height position of the fixed blanking sleeve 7. Specifically, the top end of the fixed blanking sleeve 7 extends to a certain height from the top end face of the main mold body 2, the top end faces of the fixed blanking sleeve 7 can serve as adjusting standards for the rest three movable blanking sleeves 4, and when the adjustment is carried out, an operator only needs to operate the lever driving mechanism 6, so that the top end faces of the rest three movable blanking sleeves 4 are flush with the top end face of the fixed blanking sleeve 7, the flow in three tube blanks is ensured to be consistent, and the target flow is achieved.

Of course, during the assembly process of the fixed blanking sleeve 7, the specific height position of the fixed blanking sleeve 7 in the main mold body 2 can also be adjusted through a flange, a positioning sleeve and other components.

In an alternative embodiment with respect to the lever driving mechanism 6, the lever driving mechanism 6 mainly includes an upper mounting plate 61, an abutment ring 62, an adjustment stud 63, a down-pressing adjustment nut 64, a up-lifting adjustment nut 65, a down-pressing lever 66, and a up-lifting lever 67.

Wherein the upper mounting plate 61 is erected at a position above the top end of the main template, and has a certain height.

The abutting ring 62 is sleeved on the top end of the movable blanking sleeve 4 and is fixedly connected with the movable blanking sleeve, and generally, a round nut and other parts can be adopted.

The adjusting stud 63 is vertically provided at the top end of the main body 2, and is generally vertically provided at a side edge position of the top end surface of the main body 2, and the top end thereof can abut against the bottom surface of the upper mounting plate 61.

The lower pressing adjusting nut 64 is sleeved at the top end of the adjusting stud 63, and the lower pressing adjusting nut and the adjusting stud form threaded transmission connection.

The jacking adjusting nut 65 is sleeved at the bottom end of the adjusting stud 63, and the jacking adjusting nut and the adjusting stud form threaded transmission connection.

One end of the length direction of the pressing lever 66 is connected with the bottom surface of the upper mounting plate 61 and forms a rotating connection, and the other end of the length direction thereof is sleeved on the adjusting stud 63 but does not form a threaded transmission connection but forms a sliding connection.

Similarly, one end of the jacking lever 67 in the length direction is connected to the end surface of the top end of the main die body 2 and forms a rotary connection, and the other end of the jacking lever in the length direction is sleeved on the adjusting stud 63 but does not form a threaded transmission connection but forms a sliding connection.

Meanwhile, the rod body of the pressing lever 66 forms a spherical connection with the top end face of the abutting ring 62, and the rod body of the jacking lever 67 forms a spherical connection with the bottom end face of the abutting ring 62. Generally, the contact ring 62 has a hexagonal or circular ring shape, and a plurality of ball contacts may be uniformly arranged on the top end surface and the bottom end surface thereof in the circumferential direction.

So set up, when the height position of activity unloading cover 4 need be reduced, only need forward to twist and push down adjusting nut 64 for the one end (the right-hand member of the figure) of pushing down lever 66 is pushed down, and then makes and push down lever 66 wholly produces the small-angle deflection, and pushes down lever 66 and the ball juncture of butt ring 62 down, and the pushing down force is through this transmission to the butt ring 62 on, and then on transmitting to activity unloading cover 4, compresses tightly the vertical decline of activity unloading cover 4. Of course, when the adjusting nut 64 is screwed down in the forward direction, the jacking adjusting nut 65 is also screwed in the reverse direction (or advanced) to leave a certain deflection angle space for the jacking lever 67, so as to prevent the jacking lever 67 from obstructing the vertical descending movement of the abutting ring 62 and the movable blanking sleeve 4.

When the height position of activity unloading cover 4 need to rise, only need forward to twist jacking adjusting nut 65 for one end (the right-hand member of the drawing) of jacking lever 67 is upwards extruded, and then makes the whole small-angle deflection that produces of jacking lever 67, and at the ball junction of jacking lever 67 and butt ring 62, the jacking force transmits to butt ring 62 through this on, and then transmits to activity unloading cover 4 on, is pushing up the vertical rising of activity unloading cover 4. Of course, when the jacking adjustment nut 65 is screwed forward, the pressing adjustment nut 64 is also screwed backward (or advanced) at the same time to leave a certain deflection angle space for the pressing lever 66, so as to prevent the pressing lever 66 from obstructing the vertical ascending movement of the abutting ring 62 and the movable blanking sleeve 4.

In an alternative embodiment with respect to the adjustment stud 63, the adjustment stud 63 is divided into three zones, namely an upper threaded zone 631, a lower threaded zone 632 and a polished rod zone 633. The upper threaded area 631 is disposed at an axial top end of the adjusting stud 63, and is mainly used for matching with the pressing adjusting nut 64. The lower threaded area 632 is disposed at the axial bottom end of the adjusting stud 63, and is mainly used for matching with the jacking adjusting nut 65. The polish rod region 633 is arranged in the axial middle area of the adjusting nut and is a smooth surface, the pressing lever 66 is sleeved on the polish rod region 633 in a sleeving manner, and a certain gap allowance is reserved between the pressing lever and the polish rod region 633 so that the pressing lever 66 can smoothly deflect; similarly, the jacking lever 67 is sleeved at the position close to the lower part of the polished rod region 633 in a sleeved mode, and a certain clearance allowance is reserved between the jacking lever 67 and the polished rod region 633 to enable the jacking lever 67 to deflect smoothly

To facilitate the pivotal connection between the push-down lever 66 and the upper mounting plate 61, in the present embodiment, one end of the push-down lever 66 forms a spherical connection with the bottom surface of the upper mounting plate 61. Similarly, in order to facilitate the rotational connection between the jacking lever 67 and the main mold body 2, in this embodiment, one end of the jacking lever 67 forms a spherical connection with the top end face of the main mold body 2. Of course, the pivotal connection between the push-down lever 66 and the upper mounting plate 61 and the pivotal connection between the lift-up lever 67 and the main mold body 2 may also be achieved by a hinge support or the like.

The utility model provides an among another kind of specific implementation, still be provided with dabber 8 in master model body 2, but this dabber 8 vertical sliding ground inserts and establishes in activity unloading cover 4 to outside the top of dabber 8 extended to the top terminal surface of master model body 2 always, and outside the bottom of dabber 8 extended to the bottom terminal surface of master model body 2 always, mainly used and the cooperation of outer die sleeve 5, adjust with the wall thickness of the bottle base of realizing extruding the formation to the material. Specifically, an adjusting cone 81 is arranged at the bottom end of the mandrel 8, the adjusting cone 81 is in a conical or horn shape, the discharge cone groove 52 is formed at the bottom end of the outer die sleeve 5, a certain gap is left between the outer wall surface of the adjusting cone 81 and the inner wall surface of the discharge cone groove 52, and the width of the gap is the wall thickness of the bottle blank. In order to adjust the wall thickness, the mandrel 8 needs to perform vertical lifting movement to adjust the gap between the outer wall surface of the adjusting cone 81 and the inner wall surface of the discharging cone groove 52, and the adjusting principle is similar to the flow adjusting.

Meanwhile, considering that the wall thickness adjustment of the extrusion die head in the prior art is mainly realized through actuating mechanisms such as a servo proportional valve control oil cylinder, if the oil cylinder leaks oil or the proportional valve fails, the wall thickness adjustment is easy to be extremely unstable, so that the wall thickness adjustment mode of the extrusion die head in the prior art is not reliable or has certain limitation, and aiming at the problem, the wall thickness adjusting mechanism 9 is additionally arranged in the embodiment.

Specifically, the wall thickness adjusting mechanism 9 mainly includes a transmission nut 91, the transmission nut 91 is disposed on the top end face of the main mold 2 (or the upper mounting plate 61), and a thread is disposed on the outer wall of the top of the mandrel 8 to form the top of the mandrel 8 into the lead screw 82, and the transmission nut 91 and the lead screw 82 form a thread transmission. So set up, through revolving to driving nut 91, can turn into the linear motion of lead screw 82 through the rotary motion of screw transmission with driving nut 91 to drive dabber 8 and carry out vertical elevating movement.

Further, in order to ensure stable thread transmission between the transmission nut 91 and the screw rod 82, a nut mounting seat 92 is additionally arranged in the embodiment. Specifically, the nut mounting seat 92 is disposed on the top end face of the main mold body 2 (or the upper mounting plate 61), and is mainly used for positioning and mounting the transmission nut 91, so as to ensure that the transmission nut 91 has a rotational freedom degree in the nut mounting seat 92, but limit the vertical freedom degree of the transmission nut 91, and prevent the transmission nut 91 from generating linear motion along the vertical direction on the screw rod 82.

In addition, in order to facilitate blow molding of the bottle preform, the present embodiment further includes an air inlet 83 formed at the top end of the mandrel 8, and the air inlet 83 is connected to an air inlet connector for introducing compressed air. Meanwhile, the bottom end of the adjusting cone 81 is provided with an air outlet 84, and the air outlet 84 is communicated with the air inlet 83 through the inner cavity of the mandrel 8 so as to enable compressed air to enter the bottle blank.

This embodiment still provides a BFS plastic bottle filling production integrated equipment, mainly includes bottle blowing mechanism, filling mechanism and seals the mechanism, wherein, is provided with adjustable extrusion die head in the bottle blowing mechanism, and this adjustable extrusion die head's specific content is the same with above-mentioned relevant content, and here is no longer repeated.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an adjustable extrusion die head, its characterized in that, including feeding seat (1), with the master die body (2) of feeding seat (1) intercommunication, insert locate interior die sleeve (3) in master die body (2), slidable insert locate activity unloading cover (4) in interior die sleeve (3), connect in outer die sleeve (5) of master die body (2) bottom, and set up in on master die body (2), be used for driving through screw drive activity unloading cover (4) carry out vertical elevating movement's lever actuating mechanism (6), the inner wall of interior die sleeve (3) with leave the gap as runner (a) between the outer wall of activity unloading cover (4), the top of outer die sleeve (5) seted up with the unloading chute (51) of runner (a) intercommunication, the bottom of activity unloading cover (4) be provided with be used for with unloading chute (51) complex material stopping slope unloading slope (41), with adjust during the activity unloading chute (51) with the unloading clearance of material stopping chute (41).

2. The adjustable extrusion die head according to claim 1, further comprising a fixed blanking sleeve (7) fixedly inserted into the main die body (2) and located at a preset height position, so as to serve as an adjustment standard of the movable blanking sleeve (4) during vertical lifting movement.

3. The adjustable extrusion die head according to claim 1, wherein the lever driving mechanism (6) comprises an upper mounting plate (61) erected above the top end of the main die body (2), a butting ring (62) sleeved on the top end of the movable blanking sleeve (4), an adjusting stud (63) erected on the top end of the main die body (2), a pressing adjusting nut (64) sleeved on the top end of the adjusting stud (63), a jacking adjusting nut (65) sleeved on the bottom end of the adjusting stud (63), a pressing lever (66) with one end rotatably connected with the upper mounting plate (61) and the other end sleeved on the adjusting stud (63), and a jacking lever (67) with one end rotatably connected with the main die body (2) and the other end sleeved on the adjusting stud (63), wherein the rod body of the pressing lever (66) is ball-jointed with the top end face of the butting ring (62), and the rod body of the jacking lever (67) is ball-jointed with the bottom end face of the butting ring (62).

4. The adjustable extrusion die head according to claim 3, wherein the adjusting stud (63) comprises an upper threaded zone (631) at the axial top end, a lower threaded zone (632) at the axial bottom end, and a polish rod zone (633) at the axial middle portion, and the pressing adjusting nut (64) is engaged with the upper threaded zone (631), the jacking adjusting nut (65) is engaged with the lower threaded zone (632), and the pressing lever (66) and the jacking lever (67) are both looped over the polish rod zone (633).

5. The adjustable extrusion die head according to claim 4, wherein one end of the lower pressing lever (66) forms a ball joint with the bottom surface of the upper mounting plate (61), and one end of the lifting lever (67) forms a ball joint with the top end surface of the main die body (2).

6. The adjustable extrusion die head according to any one of claims 1 to 5, further comprising a mandrel (8) inserted into the movable blanking sleeve (4) in a vertically slidable manner, and a wall thickness adjusting mechanism (9) disposed on the main die body (2) and used for driving the mandrel (8) to perform a vertical lifting motion, wherein an adjusting cone (81) is disposed at a bottom end of the mandrel (8), and a discharging cone groove (52) used for being matched with the adjusting cone (81) is disposed at a bottom end of the outer die sleeve (5) so as to adjust a gap between the adjusting cone (81) and the discharging cone groove (52) when the mandrel (8) performs a lifting motion.

7. The adjustable extrusion die according to claim 6, characterized in that the top outer wall of the mandrel (8) is threaded and forms a lead screw (82), and the wall thickness adjusting mechanism (9) comprises a transmission nut (91) rotatably arranged at the top end of the main die body (2) and in threaded transmission with the lead screw (82).

8. The adjustable extrusion die head according to claim 7, wherein the wall thickness adjusting mechanism (9) further comprises a nut mounting seat (92) arranged at the top end of the main die body (2) for positioning and mounting the transmission nut (91) so as to limit the freedom of vertical movement of the transmission nut (91).

9. The adjustable extrusion die head according to claim 6, wherein the top end of the mandrel (8) is provided with an air inlet (83) communicated with an air inlet joint, and the bottom end of the adjusting cone (81) is provided with an air outlet (84) communicated with the air inlet (83).

10. A BFS plastic bottle filling production integrated device comprises a bottle blowing mechanism, a filling mechanism and a sealing mechanism, and is characterized in that an adjustable extrusion die head is arranged in the bottle blowing mechanism, and the adjustable extrusion die head is specifically the adjustable extrusion die head of any one of claims 1-9.

Images