CN214137287U

CN214137287U - Extruder head with storage cylinder

Info

Publication number: CN214137287U
Application number: CN202022988774.3U
Authority: CN
Inventors: 关慧超
Original assignee: Shanxi Rongde Plastic Industry Co ltd
Current assignee: Shanxi Rongde Plastic Industry Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-07
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a take storage vat to extrude aircraft nose, including bush, mandrel and storage vat, the mandrel be the cylindricality that the lower part diameter increases gradually, just the mandrel move about storage vat is inside, the clearance of mandrel and bush change along with the up-and-down motion of mandrel, the inside mandrel cover of storage vat is equipped with annular piston, annular piston pass through the connecting rod and connect first pneumatic cylinder, mold core upper end position be provided with displacement sensor, displacement sensor connect the wall thickness controller. The utility model relates to a rationally, adopt and take storage cylinder formula aircraft nose structure can be at short time shaping blank, and material saving can select the extruder that exhausts as little as possible, produces the product of great structure, simultaneously the utility model discloses a thereby wall thickness controller greatly reduced raw materials consumption.

Description

Extruder head with storage cylinder

Technical Field

The utility model belongs to the plastics shaping field especially relates to a take storage cylinder to extrude aircraft nose.

Background

For the production of large blow-molded products, large extruders are generally used, which require a large amount of melt to be rapidly supplied, and the use of small extruders cannot meet the production requirements of large blow-molded products.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a take storage cylinder to extrude aircraft nose.

The utility model discloses a realize like this: an extruder head with a storage cylinder comprises a neck mold, a core mold and the storage cylinder, wherein the neck mold is arranged at the lower end of the storage cylinder, the diameter of the lower portion of the core mold is gradually increased in a cylindrical shape, the core mold runs up and down in the storage cylinder, the gap between the core mold and the neck mold changes along with the up-and-down movement of the core mold, a forming mold is arranged at the lower portion of the neck mold, the side surface of the storage cylinder is connected with a neck joint, the neck joint is connected with an extruder, a runner is arranged on the side wall of the neck joint and the storage cylinder, an annular piston is sleeved on the core mold in the storage cylinder and connected with a first hydraulic cylinder through a connecting rod, the first hydraulic cylinder is connected with a first hydraulic pump through a reversing valve, the first hydraulic pump is connected with a hydraulic oil source, and the first hydraulic cylinder, the reversing valve, the first hydraulic pump and the hydraulic oil source form a hydraulic circulation loop, the hydraulic oil-saving core mould is characterized in that a displacement sensor is arranged at the upper end of the core mould and connected with a wall thickness controller, the wall thickness controller is connected with a proportional amplifier, the proportional amplifier is connected with a proportional valve, the proportional valve is simultaneously connected with a second hydraulic pump, a hydraulic oil source and a second hydraulic cylinder, and the second hydraulic cylinder is arranged at the upper position of the core mould.

Furthermore, the outer surface of the core mold and the inner surface of the storage cylinder are in matched sleeve joint through a movable sleeve.

Furthermore, the inner wall of the movable sleeve is provided with a first limiting mechanism, the first limiting mechanism comprises two first limiting blocks and a first stop dog, the first limiting blocks are fixedly connected with the inner wall of the movable sleeve, and the first stop dog is fixedly connected with the outer wall of the annular piston.

Furthermore, the upper part of the outer wall of the movable sleeve matched with the inner wall of the storage cylinder is provided with a second limiting mechanism, the second limiting mechanism comprises a second limiting block and a second stop block, the second limiting block is fixedly connected with the inner wall of the storage cylinder, and the second stop block is fixedly connected with the outer wall of the movable sleeve.

Furthermore, the pipeline of the proportional valve and the reversing valve connected with the hydraulic oil source is provided with a filter.

Furthermore, the mouth mold is connected with the lower end of the material storage cylinder through a fixing screw, and an adjusting screw is arranged on the side face of the mouth mold.

The utility model has the advantages that: 1. the utility model relates to a rationally, adopt and take storage cylinder formula tool bit structure, parison forming speed is decided by annular piston moving speed, and is irrelevant with extruder and extrusion capacity size, and it can be in short time shaping blank, and the flagging phenomenon of blank is showing and is reducing to the raw materials has been practiced thrift. 2. On the other hand, because the parison forming speed is independent of the size of the extruder, the extruder which is as small as possible can be selected to produce blow-molded products with larger structures, so that the power consumption is reduced. 3. The utility model discloses constitute closed-loop wall thickness control system, can set for parison wall thickness axial variation curve through the wall thickness controller, the wall thickness controller is according to voltage or current signal to the proportional amplifier of curve output size change, reciprocate by the proportional amplifier control proportional valve drive second pneumatic cylinder control mandrel, make the change in mandrel and bush gap, thereby make the blank wall thickness change, displacement sensor obtains corresponding voltage signal through the size of measuring mandrel displacement and feeds back to the wall thickness controller, this has just constituted closed-loop wall thickness control system, use the wall thickness controller can make the blank require thick position thickening, and needn't whole thickening, the steerable thin a bit of both ends leftover bits, thereby greatly reduced raw materials consumption.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the wall thickness control state of the present invention;

FIG. 3 is a schematic view of the wall thickness control state of the present invention;

fig. 4 is a schematic structural view of the first and second limiting mechanisms of the present invention;

in the figure: 1-die, 2-core die, 3-storage cylinder wall, 4-neck joint, 5-runner, 6-annular piston, 7-movable sleeve, 8-connecting rod, 9-hydraulic cylinder, 10-reversing valve, 11-first hydraulic pump, 12-hydraulic oil source, 13-displacement sensor, 14-wall thickness controller, 15-proportional amplifier, 16-proportional valve, 17-second hydraulic pump, 18-filter, 19-first limiting mechanism, 1901-first limiting block, 1902-first stop block, 20-fixing screw, 21-adjusting screw, 22-second hydraulic cylinder, 23-forming die, 24-second limiting mechanism, 2401-second limiting block and 2402-second stop block.

Detailed Description

In order to understand the technical solution of the present invention more clearly, the present invention will be further explained with reference to the accompanying drawings.

The extruder head with the storage cylinder as shown in fig. 1-3 comprises a neck mold 1, a core mold 2 and a storage cylinder 3, wherein the neck mold 1 is arranged at the lower end of the storage cylinder 3, the core mold 2 is in a cylindrical shape with the diameter of the lower part gradually increasing, the core mold 2 runs up and down in the storage cylinder 3, the gap between the core mold 2 and the neck mold 1 changes along with the up-and-down movement of the core mold, when the opening degree is 0 as shown in fig. 2, the thickness of the extruded parison is the thinnest, when the opening degree is 100%, as shown in fig. 2, the thickness of the extruded parison is the largest, a forming mold 23 is arranged at the lower part of the neck mold 1, a neck joint 4 is connected to the side surface of the storage cylinder 3, the neck joint 4 is connected to an extruder, a flow passage 5 is arranged on the side wall of the neck joint 4 and the storage cylinder 3, an annular piston 6 is sleeved on the core mold 2 in the storage cylinder, the annular piston 6 is connected with a first hydraulic cylinder 9 through a connecting rod 8, the first hydraulic cylinder 9 is connected with a first hydraulic pump 11 through a reversing valve 10, the first hydraulic pump 11 is connected with a hydraulic oil source 12, the first hydraulic cylinder 9, the reversing valve 10, the first hydraulic pump 11 and the hydraulic oil source 12 form a hydraulic circulation loop, a displacement sensor 13 is arranged at the upper end of the core mould 2, the displacement sensor 13 is connected with a wall thickness controller 14, the wall thickness controller 14 is connected with a proportional amplifier 15, the proportional amplifier 15 is connected with a proportional valve 16, the proportional valve 16 is simultaneously connected with a second hydraulic pump 17, the hydraulic oil source 12 and a second hydraulic cylinder 22, and the second hydraulic cylinder 22 is arranged at the upper part of the core mould 2. The outer surface of the core mold 2 and the inner surface of the storage cylinder 3 are in matched sleeve joint through a movable sleeve 7. Activity sleeve 7 inner wall on be provided with first stop gear 19, first stop gear 19 include first stopper 1901 and first dog 1902, first stopper 1901 be two, set up respectively at the peak and the minimum of annular piston 6 operation, first stopper 1901 and activity sleeve 7 inner wall fixed connection,

first dog

1902 and 6 outer wall fixed connection of annular piston, first dog 1902 is along with annular piston 6 up-and-down motion. The upper part of the outer wall of the movable sleeve 6, which is matched with the inner wall of the storage cylinder 3, is provided with a second limiting mechanism 24, the second limiting mechanism 24 comprises a second limiting block 2401 and a second stopper 2402, the second limiting block 2401 is fixedly connected with the inner wall of the storage cylinder 3, and the second stopper 3402 is fixedly connected with the outer wall of the movable sleeve 7. The pipeline (oil return path) of the proportional valve 16 and the reversing valve 1012 connected with the hydraulic oil source is provided with a filter 18, and the filter can effectively filter out hybrid brought out by hydraulic oil in pipeline circulation, so that the service life of the hydraulic oil and the service life of hydraulic pipe fittings are effectively prolonged. The bush 1 is connected with the lower end of the storage cylinder 3 through a fixing screw 20, the bush 1 is tightly attached to the lower end face of the storage cylinder 4 through the connection of the fixing screw, a melt in the storage cylinder 3 can be effectively sealed, an adjusting screw 21 is arranged on the side face of the bush 1, and the position relation between the bush 1 and the core mold can be finely adjusted through the adjusting screw 21.

When the extruder head works, the extruder injects the melt into the storage cylinder 3 through the neck 4, the annular piston 6 rises under the action of the first hydraulic cylinder 9, when the highest point is reached, the first limit block 1901 at the high point acts, the storage cylinder 3 is filled with the melt, under the action of the reversing valve 10, the first hydraulic cylinder 9 drives the annular piston 6 to move downwards, when the annular piston 6 moves downwards, the movable sleeve 7 also moves downwards, when the movable sleeve 7 reaches the lower end position, the runner 5 at the neck 4 is closed, the melt flows out through the gap between the mouth mold 1 and the core mold 2, the thickness of the extruded parison can be adjusted along with the relative position between the core mold 2 and the mouth mold 1, and the specific control is as follows: an operator can set an axial variation curve of the parison wall thickness through the wall thickness controller 14, the wall thickness controller 14 outputs voltage or current signals with variable magnitudes to the proportional amplifier 15 according to the curve, the proportional amplifier 15 controls the proportional valve to drive the second hydraulic cylinder 22 to control the core mold 2 to move up and down, so that the gap between the core mold 2 and the die mold 1 is changed, the displacement sensor obtains corresponding voltage signals through measuring the magnitude of the moving distance of the core mold 2 and feeds the voltage signals back to the wall thickness controller 14, and therefore the closed-loop wall thickness control system is formed.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. An extruder head with a storage cylinder comprises a mouth mold, a core mold and the storage cylinder, and is characterized in that the mouth mold is arranged at the lower end of the storage cylinder, the core mold is cylindrical, the diameter of the lower portion of the core mold is gradually increased, the core mold runs up and down in the storage cylinder, the gap between the core mold and the mouth mold changes along with the up-and-down movement of the core mold, a forming mold is arranged at the lower portion of the mouth mold, the side surface of the storage cylinder is connected with a neck joint, the neck joint is connected with an extruder, a runner is arranged on the side wall of the neck joint and the storage cylinder, an annular piston is sleeved on the core mold in the storage cylinder and is connected with a first hydraulic cylinder through a connecting rod, the first hydraulic cylinder is connected with a first hydraulic pump through a reversing valve, the first hydraulic pump is connected with a hydraulic oil source, and the first hydraulic cylinder, the reversing valve, the first hydraulic pump and the hydraulic oil source form a hydraulic circulation loop, the hydraulic oil-saving core mould is characterized in that a displacement sensor is arranged at the upper end of the core mould and connected with a wall thickness controller, the wall thickness controller is connected with a proportional amplifier, the proportional amplifier is connected with a proportional valve, the proportional valve is simultaneously connected with a second hydraulic pump, a hydraulic oil source and a second hydraulic cylinder, and the second hydraulic cylinder is arranged at the upper position of the core mould.

2. The extruder head with the accumulator according to claim 1, wherein the outer surface of the core mold and the inner surface of the accumulator are fittingly sleeved by a movable sleeve.

3. The extruder head with the storage tank as claimed in claim 2, wherein the inner wall of the movable sleeve is provided with a first limiting mechanism, the first limiting mechanism comprises two first limiting blocks and two first stop blocks, the first limiting blocks are fixedly connected with the inner wall of the movable sleeve, and the first stop blocks are fixedly connected with the outer wall of the annular piston.

4. The extruder head with the storage cylinder as claimed in claim 2, wherein a second limiting mechanism is arranged at the upper position where the outer wall of the movable sleeve is matched with the inner wall of the storage cylinder, the second limiting mechanism comprises a second limiting block and a second stop block, the second limiting block is fixedly connected with the inner wall of the storage cylinder, and the second stop block is fixedly connected with the outer wall of the movable sleeve.

5. The extruder head with the accumulator as in claim 1, wherein the pipeline connecting the proportional valve and the reversing valve to the hydraulic oil source is provided with a filter.

6. The extruder head with the accumulator according to claim 1, wherein the die is connected with the lower end of the accumulator through a fixing screw, and an adjusting screw is arranged on the side surface of the die.