CN212795820U

CN212795820U - Multi-material-channel extrusion molding die head

Info

Publication number: CN212795820U
Application number: CN202021263234.2U
Authority: CN
Inventors: 邓永斌; 吴桂香
Original assignee: Fushan Yousheng Precision Machinery Co Ltd
Current assignee: Fushan Yousheng Precision Machinery Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-26
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a many material way extrusion molding die, include: the device comprises a fixed box body, an extrusion head assembly, an extrusion rod and a wall thickness adjusting assembly. The extrusion head assembly comprises a fixed cover plate, an extrusion end cover and an adjusting wedge block. The wall thickness adjusting assembly comprises an extrusion nozzle adjusting rod and a power mechanism. The plastic blank is extruded from a feed inlet of the fixed box body, passes through an extrusion channel surrounded by the fixed box body, the extrusion end cover and the extrusion rod, and is extruded from an extrusion port of the extrusion end cover. The position of the extrusion end cover is adjusted through the adjusting wedge block so as to adjust the extrusion effect. The extrusion nozzle adjusting rod is controlled by a power mechanism to adjust the wall thickness of the extruded bottle blank. The utility model discloses a many material way extrusion molding die, compact structure, the practicality is strong, is fit for lasting extrusion molding production. The utility model discloses can be applied to in the plastic products production field.

Description

Multi-material-channel extrusion molding die head

Technical Field

The utility model relates to a plastic products production field, in particular to many material way extrusion molding die head.

Background

The function of an extrusion die is to distribute the plastic melt from the extruder barrel well in the die flow path for extrusion and shaping from the die at a uniform velocity. The shaping action of the extrusion die is of critical importance in the extrusion process.

Common types of extrusion dies are single-stream and multi-stream. In particular, in the production of plastic bottles, a forming mold with a plurality of forming cavities is often adopted, and the bottle blowing mold with one or more forms needs to extrude bottle blanks for feeding by using corresponding multi-material-channel extrusion molding dies. In the multi-material-channel extrusion molding die head in the prior art, the debugging of a plurality of die head discharge ports is difficult, and poor molding is often caused because of the butt joint error between a plurality of discharge material channels of the die head and a molding cavity of a molding die.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a many material ways extrusion molding die to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The technical scheme adopted for solving the technical problems is as follows:

a multi-channel extrusion die comprising:

the device comprises a fixed box body, a plurality of material cavities and a plurality of material inlets, wherein the fixed box body is provided with an extrusion end face, the material cavities and the material inlets;

an extrusion head assembly, the extrusion head assembly comprising:

the fixed cover plate is fixedly arranged on the extrusion end face;

the extrusion end covers are provided with inner cavities, each inner cavity is provided with an extrusion port, the extrusion end covers are multiple, the extrusion end covers are respectively arranged at the port parts of the material cavities on the extrusion end faces, the extrusion end covers are all slidably arranged between the extrusion end faces and the fixed cover plate, and the inner cavities of the extrusion end covers are communicated with the corresponding material cavities;

the extrusion end cover is provided with a plurality of adjusting parts matched with the adjusting inclined planes, the fixing cover plate is provided with screw through holes corresponding to the screw holes, the directions of the screw through holes are consistent with the directions of the corresponding screw holes, and the screw through holes are provided with adjusting screws in threaded connection with the screw holes;

the extruding rod is provided with a plurality of extruding rods, the extruding rods correspond to the material cavities one by one, the extruding rods are fixedly installed in the material cavities, corresponding extruding channels are arranged between the inner walls of the extruding end covers and the inner walls of the material cavities and the extruding rods, and the extruding openings and the feeding holes are communicated with the extruding channels.

The utility model has the advantages that: the plastic blanks enter from the feed inlet through the fixed box body, the extrusion head assembly and the extrusion rod, and are extruded from the extrusion port after passing through the extrusion channel; when the adjusting screw is adjusted to change the distance between the adjusting wedge block and the screw through hole corresponding to the adjusting wedge block, the adjusting inclined planes of the adjusting wedge blocks act on the adjusting part of the extrusion end cover, so that the extrusion end cover deflects on the extrusion end face, and the inner cavity of the extrusion end cover radially deflects relative to the extrusion rod, thereby achieving the effects of changing the shape of the extrusion channel at the extrusion port and adjusting the extrusion effect.

As a further improvement of the above technical solution, the method further comprises: the wall thickness adjusting assembly and the extrusion head assembly are respectively and fixedly arranged on two opposite sides of the fixed box body, and the wall thickness adjusting assembly comprises an extrusion nozzle adjusting rod and a power mechanism; the extrusion nozzle adjusting rod is provided with a plurality of air holes and one-to-one correspondence to the extrusion rods, the extrusion nozzle adjusting rod penetrates through the extrusion rods along the axial sliding direction of the extrusion rods, and the extrusion nozzle adjusting rod is fixedly connected with the power mechanism.

According to the technical scheme, in the process of extruding the plastic bottle blank, the power mechanism drives the extrusion nozzle adjusting rod to slide up and down in the extrusion rod, and the distance between the upper end of the extrusion nozzle adjusting rod and the extrusion port of the extrusion end cover is changed, so that the wall thickness of the plastic bottle blank extruded from the extrusion port is adjusted; the extrusion nozzle adjusting rod is provided with an air vent which can be connected with an air supply device, and a certain amount of air is injected into the bottle blank while the bottle blank is extruded so that the bottle blank keeps bulging, and subsequent extrusion molding is facilitated.

As a further improvement of the technical scheme, the vent hole of the extrusion nozzle adjusting rod is axially arranged and penetrates through the extrusion nozzle adjusting rod.

Through above-mentioned technical scheme, the air vent runs through the setting, makes nozzle adjusts pole bottom and air feeder is linked together, blows when the top is extruded, can avoid simultaneously nozzle adjusts the pole and slides from top to bottom and carry out the wall thickness when adjusting, and the trachea that nozzle adjusts the pole and communicates takes place to hang and pulls the phenomenon.

As a further improvement of the above technical solution, the plurality of adjusting wedges are slidably mounted in the same direction, every two adjusting wedges are respectively mounted on both sides of the extrusion end cover, the fixing cover plate is provided with adjusting screw holes, and the adjusting screw holes are arranged along the sliding direction of the adjusting wedges.

Through the technical scheme, the screw through holes corresponding to the adjusting wedge blocks and the adjusting screw holes are arranged along the same direction, so that the corresponding adjusting screws can be fixed on the same side of the fixed cover plate, the debugging process of the extrusion end cover can be completed on the same side of the die head, the operation is convenient, and the practicability is high.

As a further improvement of the technical scheme, the material cavities are two, the extrusion end cover, the extrusion rod and the feeding holes are respectively provided with two, and the two feeding holes are respectively communicated with the two material cavities.

Through the technical scheme, the material cavity corresponds to the extrusion end cover, the extrusion rod and the feed inlet one to one, and the double-material cavity arrangement can ensure that the extrusion die head structure is compact and simple and simultaneously improves the extrusion efficiency.

As a further improvement of the above technical solution, two connecting line directions of the material cavities are left and right directions, the adjusting wedges are slidably mounted along the left and right directions, every two adjusting wedges are respectively mounted on two sides of the extrusion end cover, the extrusion end face is provided with a top block mounting groove, the top block mounting groove is arranged around one of the ports of the material cavities, the top block mounting groove is slidably mounted along the left and right directions and is provided with a movable top block, the sliding top block is provided with a avoiding groove and a jacking portion, and the fixed cover plate and the fixed box body are both provided with adjusting screw holes arranged along the left and right directions.

Through the technical scheme, the two adjusting screw holes corresponding to the two extrusion end covers can be arranged on the same side, the two extrusion end covers are conveniently adjusted, except for the corresponding adjusting wedge blocks, one of the extrusion end covers is tightly supported through the screws arranged in the adjusting screw holes, and the other extrusion end cover is tightly supported on the movable jacking block of the extrusion end cover through the screws for adjusting.

As a further improvement of the technical scheme, the two feed inlets are arranged on the same side of the fixed box body, and the feed inlets are respectively communicated with the corresponding extruding channels.

Through above-mentioned technical scheme, two crowded material passageways all need to be crowded the blank into through the feed inlet, and two feed inlets are located and can be conveniently communicate with plastic extruder with one side.

As a further improvement of the technical scheme, the material cavity is cylindrical, the inner cavity of the extrusion end cover is conical, the middle of the extrusion rod is in a reducing cylindrical shape, and the extrusion rod is arranged at the end part of the extrusion end cover and is conical.

Through the technical scheme, the outer diameter of the extruding rod is changed, so that the blank entering the extruding channel is subjected to a certain degree of mixing and homogenizing effects in the extruding process, and the extruded blank has better quality; the inner cavity of the extruding end cover and the end part of the extruding rod are in corresponding conical shapes, so that a cylindrical bottle blank with high applicability can be conveniently extruded, and the extruding effect can be conveniently adjusted.

As a further improvement of the technical scheme, the extrusion end cover comprises an extrusion cup head and an extrusion cup mouth, the extrusion mouth is arranged on the extrusion cup mouth, and the extrusion cup mouth is fixedly arranged on the extrusion cup head.

Through the technical scheme, the different extrusion cup mouths can be replaced when products with different specifications are produced, so that the specifications of the extrusion mouths can be matched with the products, the whole extrusion end cover is prevented from being replaced, and the adaptability and practicability are higher.

As a further improvement of the technical scheme, the power mechanism is provided with a screw rod, a screw nut and a nut mounting plate, the screw rod is arranged along the axial direction of the extruding rod, the screw nut is in threaded connection with the screw rod, and the nut mounting plate is fixedly connected with the nut and the extruding nozzle adjusting rod.

Through the technical scheme, for the mechanism with higher requirement on the action frequency for adjusting the wall thickness, the commonly used power source is the servo motor, and the rotation action of the output shaft of the servo motor is converted into the axial sliding of the extrusion nozzle adjusting rod along the extrusion rod through the matching of the screw rod, the screw rod nut and the nut mounting plate, so that the effect of adjusting the wall thickness is achieved.

Drawings

The present invention will be further explained with reference to the drawings and examples;

FIG. 1 is a cross-sectional view of one embodiment of a multi-channel extrusion die provided by the present invention;

FIG. 2 is a schematic perspective view of one embodiment of a multi-channel extrusion die provided by the present invention;

FIG. 3 is a perspective view of the multi-channel extrusion die of the present invention with one embodiment of the die having a stationary cover removed;

FIG. 4 is a cross-sectional view of an embodiment of a multi-channel extrusion die provided by the present invention at the extrusion end cap;

FIG. 5 is a cross-sectional view of an embodiment of a multi-channel extrusion die provided by the present invention, showing the feed ports;

fig. 6 is a partially enlarged view of fig. 1.

100. The extrusion device comprises a fixed box body, 110, a feed inlet, 120, a top block mounting groove, 130, a movable top block, 200, an extrusion head assembly, 210, a fixed cover plate, 211, an adjusting screw hole, 212, a screw through hole, 220, an extrusion end cover, 221, an extrusion cup head, 222, an extrusion cup mouth, 230, an adjusting wedge block, 300, an extrusion rod, 400, a wall thickness adjusting assembly, 410, an extrusion nozzle adjusting rod, 420 and a power mechanism.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 6, the multi-channel extrusion die of the present invention makes the following examples:

a multi-channel extrusion die comprising: the device comprises a fixed box 100, an extrusion head assembly 200, an extrusion rod 300 and a wall thickness adjusting assembly 400.

The fixed box 100 is cuboid, and its upper end is equipped with extrudes the terminal surface, fixed box 100 is equipped with two cylindrical material chambeies that run through from top to bottom. And the material cavities are fixedly provided with one extruding rod 300 respectively. The lower part of the extrusion rod 300 is cylindrical, the lower part of the extrusion rod 300 is hermetically installed with the material cavity, the middle section of the extrusion rod 300 is in a reducing cylinder shape, and the upper part of the extrusion rod 300 is in a cone shape.

The extrusion head assembly 200 is fixedly installed above the fixed box 100, and the extrusion head assembly 200 includes: the extrusion end face comprises a fixed cover plate 210 fixedly arranged on the extrusion end face and an extrusion end cover 220 slidably arranged on the extrusion end face. The number of the extrusion end covers 220 is two, the two extrusion end covers are respectively arranged at the upper ends of the two material cavities, and the extrusion end cover 220 is provided with a conical inner cavity. The extrusion end cover 220 comprises an extrusion cup head 221 and an extrusion cup mouth 222, the extrusion cup mouth 222 is fixedly mounted on the upper portion of the extrusion cup head 221 in a threaded manner, and an extrusion mouth is arranged in the middle of the extrusion cup mouth 222.

The material extruding rod 300 is arranged in a space surrounded by the inner wall of the material cavity and the inner wall of the extruding end cover 220, and an annular material extruding channel is formed. Two feed inlets 110 are arranged on the right side of the fixed box body 100, and the two feed inlets 110 are respectively communicated with the bottoms of the two extruding channels.

The two extrusion end caps 220 are slidably mounted on the upper end of the fixed box 100 along the direction of the extrusion end face. The front side and the rear side of the extrusion end cover 220 are both provided with adjusting wedges 230, the adjusting wedges 230 are installed in a sliding mode along the left-right direction, and the adjusting wedges 230 are provided with threaded holes and adjusting inclined planes. The front side and the rear side of the extrusion end cover 220 are both provided with adjusting parts matched with the adjusting inclined planes; the right side of the fixed cover plate 210 is provided with screw through holes 212 corresponding to the screw holes of the adjusting wedge 230.

The upper end of stationary box 100 is equipped with kicking block mounting groove 120, kicking block mounting groove 120 winds the right side the port setting in material chamber, there is movable kicking block 130 along controlling direction slidable mounting in kicking block mounting groove 120, the middle part of activity kicking block 130 is equipped with keeps away the position groove, the left end of activity kicking block 130 is equipped with the tight portion in top.

The right side of the fixed cover plate 210 and the right side of the fixed box body 100 are both provided with an adjusting screw hole 211 arranged along the left-right direction. The adjusting screw hole 211 arranged on the right side of the fixed cover plate 210 is communicated with the extrusion end cover 220 arranged on the right side; the adjusting screw hole 211 formed on the right side of the fixed box 100 is communicated with the movable top block 130.

The wall thickness adjustment assembly 400 includes a nozzle adjustment lever 410 and a power mechanism 420. The number of the nozzle adjusting rods 410 is two, the two nozzle adjusting rods 410 are respectively slidably arranged in the two material extruding rods 300, and the nozzle adjusting rods 410 are arranged along the axis of the material extruding rods 300. The upper end of the nozzle adjusting rod 410 is conical, the nozzle adjusting rod 410 is provided with an air vent, and the air vent penetrates through the nozzle adjusting rod 410 along the axis. The power mechanism 420 is provided with a screw rod, a screw rod nut and a nut mounting plate, the screw rod is arranged along the up-down direction, the screw rod nut is in threaded connection with the screw rod, the nut mounting plate is fixedly connected with the nut, and the nozzle adjusting rod 410 is fixedly connected with the nut mounting plate.

Referring to fig. 1 to 6, when the multi-material channel extrusion molding die head of the utility model is used for extruding plastic bottle blanks:

firstly, the feed inlets 110 are connected to an extruder, and a hot-melt billet enters from the two feed inlets 110 and is extruded from the extrusion port through the extrusion channel. In the process, the screw rod of the power mechanism 420 is driven by the servo motor to rotate, the two extrusion nozzle adjusting rods 410 are driven by the screw rod nut and the nut mounting plate to slide up and down in the extrusion rod 300, and the distance between the upper ends of the extrusion nozzle adjusting rods 410 and the extrusion port of the extrusion end cover 220 is changed, so that the wall thickness of the plastic bottle blank extruded from the extrusion port is adjusted. The bottom of the extrusion nozzle adjusting rod 410 is connected with a gas supply device, and a certain amount of gas is injected into the bottle blank while the bottle blank is extruded, so that the bottle blank keeps bulging, and subsequent extrusion molding is facilitated.

The bottle parison extruded from the extrusion die head needs to be consistent with the mold closing position of the molding die, and therefore the extrusion direction needs to be adjusted, specifically, when the extrusion end cap 220 on the right side is adjusted: a screw which is installed in the adjusting screw hole 211 of the fixing cover plate 210 through adjusting threads, so that one end of the screw abuts against the extrusion end cover 220; and the position of the adjusting wedge 230 is changed by adjusting a screw installed in the screw through hole 212 and threadedly coupled to the adjusting wedge 230. Under the action of the inclined surfaces of the two adjusting wedges 230 and the screws in the adjusting screw holes 211, the right extrusion end cover 220 moves on the extrusion end surface, so that the inner cavity of the extrusion end cover 220 deviates relative to the upper part of the extrusion rod 300, and the extrusion effect is adjusted. Specifically, when adjusting the left extrusion end cap 220: besides adjusting the adjusting wedge 230, a screw installed in the adjusting screw hole 211 of the fixed box 100 through an adjusting thread is also needed, so that one end of the screw abuts against the movable top block 130, and the movable top block 130 abuts against the extrusion end cap 220 through the abutting portion thereof, thereby performing translational adjustment on the extrusion end cap 220.

In some embodiments, the feed ports 110 are arranged in a front-to-back direction.

In some embodiments, the adjusting wedge 230 is slidably installed in a front-rear direction, and the adjusting screw hole 211 is formed in the front-rear direction.

In some embodiments, the top block mounting groove 120 is formed at the bottom of the fixing cover plate 210, and the adjustment screw hole 211 is formed at one side of the fixing cover plate 210.

In addition, examples of the multi-channel extrusion die having a number of material chambers greater than or equal to three can be made with reference to the above-listed examples of the multi-channel extrusion die having a number of material chambers of two, and will not be further described here.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. The utility model provides a many material way extrusion molding die which characterized in that: the method comprises the following steps:

the device comprises a fixed box body (100), wherein the fixed box body (100) is provided with an extrusion end face, a plurality of material cavities and a feeding hole (110), and the material cavities all penetrate through the extrusion end face;

an extrusion head assembly (200), the extrusion head assembly (200) comprising:

the fixed cover plate (210), the said fixed cover plate (210) is fixedly mounted to the said extrusion end;

the extrusion end covers (220) are provided with inner cavities, each inner cavity is provided with an extrusion port, a plurality of extrusion end covers (220) are arranged, the extrusion end covers (220) are respectively arranged at the port parts of the material cavities on the extrusion end faces, the extrusion end covers (220) are all slidably arranged between the extrusion end faces and the fixed cover plates (210), and the inner cavities of the extrusion end covers (220) are communicated with the corresponding material cavities;

the adjusting wedge block (230) is provided with a plurality of adjusting wedge blocks (230), the adjusting wedge blocks (230) are slidably mounted on the fixed cover plate (210) along a fixing direction, each adjusting wedge block (230) is provided with an adjusting inclined surface and a threaded hole arranged along the sliding direction, the extrusion end cover (220) is provided with a plurality of adjusting parts matched with the adjusting inclined surfaces, the fixed cover plate (210) is provided with a screw through hole (212) corresponding to the threaded hole, the screw through hole (212) is consistent with the corresponding threaded hole in direction, and the screw through hole (212) is provided with an adjusting screw in threaded connection with the threaded hole;

crowded material pole (300), crowded material pole (300) have many, crowded material pole (300) with material chamber one-to-one, crowded material pole (300) fixed mounting in material intracavity, it is corresponding extrude the inner wall in end cover (220) and the inner wall in material chamber with be equipped with a crowded material passageway between crowded material pole (300), extrude mouthful and feed inlet (110) all with crowded material passageway is linked together.

2. The multi-channel extrusion die of claim 1, wherein: further comprising: the wall thickness adjusting assembly (400) and the extrusion head assembly (200) are respectively and fixedly arranged at two opposite sides of the fixed box body (100), and the wall thickness adjusting assembly (400) comprises an extrusion nozzle adjusting rod (410) and a power mechanism (420); the extrusion nozzle adjusting rod (410) is provided with a plurality of strips, the extrusion nozzle adjusting rod (410) is provided with vent holes, the extrusion nozzle adjusting rod (410) is in one-to-one correspondence with the extrusion rods (300), the extrusion nozzle adjusting rod (410) is arranged in the extrusion rods (300) in a penetrating mode along the axial sliding direction of the extrusion rods (300), and the extrusion nozzle adjusting rod (410) is fixedly connected with the power mechanism (420).

3. The multi-channel extrusion die of claim 2, wherein: the vent hole of the nozzle adjusting rod (410) is axially arranged and penetrates through the nozzle adjusting rod (410).

4. The multi-channel extrusion die of claim 1, wherein: the adjusting wedges (230) are installed in a sliding mode along the same direction, every two adjusting wedges (230) are installed on the two sides of the extrusion end cover (220) respectively, the fixing cover plate (210) is provided with adjusting screw holes (211), and the adjusting screw holes (211) are arranged along the sliding direction of the adjusting wedges (230).

5. The multi-channel extrusion die of claim 1, wherein: the material chamber has two, extrude end cover (220), crowded material pole (300), feed inlet (110) all are equipped with two, two feed inlet (110) respectively with two the material chamber is linked together.

6. The multi-channel extrusion die of claim 5, wherein: use two the line direction in material chamber is left right direction, adjust voussoir (230) along left right direction slidable mounting, per two adjust voussoir (230) install respectively in extrude the both sides of end cover (220), it is equipped with kicking block mounting groove (120) to extrude the terminal surface, kicking block mounting groove (120) are around one of them the port setting in material chamber, kicking block mounting groove (120) are along controlling direction slidable mounting and are moved kicking block (130), the slip kicking block is equipped with keeps away a groove and the tight portion in top, fixed cover plate (210) and fixed box (100) all are equipped with along controlling the adjustment screw (211) that the direction set up.

7. The multi-channel extrusion die of claim 5, wherein: the two feed inlets (110) are arranged on the same side of the fixed box body (100), and the feed inlets (110) are respectively communicated with the corresponding extruding channels.

8. The multi-channel extrusion die of claim 1, wherein: the material chamber is cylindrical, the inner chamber of extruding end cover (220) is cone shape, the middle part of extruding pole (300) is reducing cylinder shape, extruding pole (300) are located the tip of extruding end cover (220) is cone shape.

9. The multi-channel extrusion die of claim 1, wherein: the extrusion end cover (220) comprises an extrusion cup head (221) and an extrusion cup mouth (222), the extrusion mouth is arranged on the extrusion cup mouth (222), and the extrusion cup mouth (222) is fixedly arranged on the extrusion cup head (221).

10. The multi-channel extrusion die of claim 2, wherein: the power mechanism (420) is provided with a screw rod, a screw rod nut and a nut mounting plate, the screw rod is arranged along the axial direction of the extruding rod (300), the screw rod nut is in threaded connection with the screw rod, and the nut mounting plate is fixedly connected with the nut and the extruding nozzle adjusting rod (410).