CN212372630U

CN212372630U - Plasticizing device of injection stretch blow molding machine

Info

Publication number: CN212372630U
Application number: CN202020696396.9U
Authority: CN
Inventors: 焦家富; 庞武景
Original assignee: Ningbo Cortez Machinery Manufacturing Co ltd
Current assignee: Ningbo Cortez Machinery Manufacturing Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-01-19
Anticipated expiration: 2030-04-29

Abstract

The utility model relates to an annotate and draw and blow device technical field, disclose an annotate and draw plastifying device who blows make-up machine, including: the device comprises a charging barrel with a charging groove, wherein a feeding hole communicated with the charging groove is formed in the side wall of the charging barrel, a cooling sleeve is arranged at one end, close to the feeding hole, of the charging barrel, and a plurality of charging barrel heating rings are sleeved along the axis of the charging barrel; the screw rod is rotatably arranged in the material groove and can move along the axial direction of the material barrel; the feed trough is also provided with a backstop mechanism, and the screw rod is movably arranged in the backstop mechanism in a penetrating way; and the nozzle is communicated with the material groove and arranged at one end of the material barrel, which is far away from the feeding hole. The utility model has the advantages that the plasticizing device can be suitable for various sizing materials, and the working efficiency of the plasticizing device is high; the plasticizing device has balanced temperature control and good injection effect.

Description

Plasticizing device of injection stretch blow molding machine

Technical Field

The utility model relates to an annotate and draw and blow device technical field relates to an annotate and draw plasticizing device who blows make-up machine.

Background

The process of injection stretch blow comprises the following steps: the method comprises the steps of firstly, injection molding a blank by an injection molding machine, longitudinally stretching the hot blank, and then, introducing compressed air to transversely stretch the hot blank to obtain a product with the same shape as a mold cavity, wherein the product generally comprises an injection bottle blank station, a stretch blow molding station and a demolding station. Most mineral water bottles, medicine bottle boxes, lamp covers and the like in life are widely molded by injection, drawing and blowing.

In injection stretch blow molding machines, the main function of the plasticizing device is to melt the gum material and then inject the molten gum material into the mold. The plasticizing device of the existing injection stretch blow molding machine generally has the following problems: the plasticizing device is applicable to limited types of sizing materials and has poor universality; the temperature field of the plasticizing device is unreasonably controlled, the temperature equalization effect is not achieved, and the plasticizing efficiency is low.

The publication number "CN 205167477U" discloses a novel injection molding machine equipment, including mode locking hydro-cylinder, back template, liquid top hydro-cylinder, front template, mechanical safety mechanism, pull rod, movable mould board, connecting rod clamping mechanism, accent mould mechanism, plastify subassembly, hopper subassembly, thrust subassembly, carriage subassembly, injection subassembly and removal subassembly. In the novel injection molding machine equipment, the temperature field of the plasticizing component is unreasonable to control, the plasticizing efficiency is low, and the universality is poor.

SUMMERY OF THE UTILITY MODEL

The above is not enough to prior art, the utility model aims to solve the technical problem that a wide application scope, the high-efficient and balanced notes of work efficiency draw the plasticizing device who blows the make-up machine of temperature control are proposed.

The utility model provides a technical scheme that its technical problem adopted is, provides a annotate plastify device that draws and blows make-up machine, including:

the device comprises a charging barrel with a charging groove, wherein a feeding hole communicated with the charging groove is formed in the side wall of the charging barrel, a cooling sleeve is arranged at one end, close to the feeding hole, of the charging barrel, and a plurality of charging barrel heating rings are sleeved along the axis of the charging barrel;

the screw rod is rotatably arranged in the material groove and can move along the axial direction of the material barrel; a backstop mechanism is further arranged in the material groove, and a screw rod is movably arranged in the backstop mechanism in a penetrating mode;

and the nozzle is communicated with the material groove and arranged at one end of the charging barrel, which is far away from the feeding hole.

Furthermore, the screw is a separated screw and comprises a feeding section, a compression section and a plasticizing section which are sequentially connected; the feeding section is located at one end close to the feeding port, and the plasticizing end is located at one end close to the nozzle.

Furthermore, the screw pitches of the compression section are smaller than those of the feeding section and the plasticizing section.

Further, an adjusting mechanism for controlling the opening and closing of the nozzle is arranged on the nozzle.

Furthermore, the adjusting mechanism comprises an ejector pin and a nozzle lock for driving the ejector pin; the nozzle lock is connected with the ejector pin;

the nozzle is provided with an ejector pin hole along the radial direction, the ejector pin penetrates through the ejector pin hole, and the ejector pin can move along the axial direction of the ejector pin hole; the thimble is provided with a material guide hole.

Further, the nozzle lock can drive the material guide hole to be communicated with the nozzle, and the nozzle lock can drive the thimble to plug the nozzle.

Further, a nozzle heating ring is sleeved on the periphery of the nozzle; and the nozzle is provided with a positioning block which is propped against the thimble.

Furthermore, one end of the charging barrel, which is far away from the feeding hole, is connected with a charging barrel end cover, and the nozzle is embedded on the charging barrel end cover; and a charging barrel end cover heating ring is arranged on the periphery of the charging barrel end cover.

Furthermore, a positioning step is arranged at the position, close to the feeding port, of the trough, the cooling sleeve is sleeved on the positioning step, and the side face of the cooling sleeve abuts against the side face of the positioning step.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the utility model discloses in, adopt separation type screw rod, the initial position and the terminal position of reasonable control screw thread, and the pitch of control compression section all is less than the pitch of reinforced section and plastify section for this plasticizing device can be applicable to most sizing material, improves its application scope, and is provided with stopping mechanism in the silo, can effectively prevent the sizing material against the current. The nozzle is provided with an adjusting mechanism for controlling the on-off of the nozzle, and the nozzle is closed to prevent the rubber material from flowing out of the nozzle during the early storage; after the material storage is finished, the nozzle is conducted, so that the rubber material can be smoothly injected into the die, and the operation is convenient. A cooling sleeve is arranged at a position, close to a feeding hole, of the charging barrel, so that the glue material at the initial section is prevented from melting and blocking at the front end, and the subsequent glue material cannot smoothly flow into a material groove at the rear end; the feed cylinder is evenly overlapped and is equipped with feed cylinder end cover heating ring, nozzle on being equipped with feed cylinder end cover heating ring, the feed cylinder end cover and is overlapped and be equipped with the nozzle heating ring on, guarantees that the each stage of sizing material is heated evenly, prevents the condition of cold burden from appearing, guarantees that injection efficiency is high and injection effect is good.

Drawings

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

FIG. 2 is an enlarged schematic view at A in FIG. 1;

fig. 3 is an enlarged schematic view of fig. 1 at B.

In the figure, the position of the upper end of the main shaft,

1. a charging barrel; 10. a trough; 11. a feed inlet; 12. a cooling jacket; 13. a charging barrel heating ring; 14. a charging barrel end cover; 15. a heating ring of the end cover of the charging barrel; 16. positioning a step;

2. a screw; 20. a feeding section; 21. a compression section; 22. a plasticizing section;

3. a backstop mechanism;

4. a nozzle; 40. a thimble hole; 41. a nozzle heating ring; 42. positioning blocks;

5. an adjustment mechanism; 50. a thimble; 51. a nozzle lock; 501. a material guide hole; 60. a nut; 61. a half loop; 62. and (5) sealing rings.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, a plasticizing apparatus of an injection stretch blow molding machine includes: the device comprises a material barrel 1, a screw 2, a retaining mechanism 3, a nozzle 4 and an adjusting mechanism 5.

The device comprises a charging barrel 1 with a charging groove 10, wherein a feeding hole 11 communicated with the charging groove 10 is formed in the side wall of the charging barrel 1, a cooling sleeve 12 is arranged at one end, close to the feeding hole 11, of the charging barrel 1, and a plurality of charging barrel heating rings 13 are sleeved along the axis of the charging barrel 1; specifically, a cooling sleeve 12 is arranged at a position of the charging barrel 1 close to the feeding hole 11, so that the situation that the sizing material at the position is melted and blocked at the front end is prevented, and the sizing material cannot smoothly flow to the rear end of the material groove 10 is avoided; a plurality of charging barrel heating rings 13 are uniformly sleeved on the charging barrel 1 to assist the melting of the rubber material, and on one hand, the rubber material is sheared and rubbed through the rotation of the screw rod to generate heat when the rubber material is melted; on the other hand, the heating ring 13 of the charging barrel can transfer heat to the position of the sizing material, so that the plasticizing efficiency of the sizing material is improved, and a stable temperature field is provided.

A screw 2 rotatably disposed in the trough 10, the screw 2 being movable in an axial direction of the barrel 1; the feed chute 10 is also provided with a retaining mechanism 3, and a screw rod 2 is movably arranged in the retaining mechanism 3 in a penetrating manner; wherein, the stopping mechanism 3 of this application mainly includes the stopping ring, and the cover is established at the front end of screw rod 2, and the setting of 2 activities of screw rod is in the stopping ring, and the stopping ring can prevent effectively that the sizing material that is close to 4 sides of nozzle from flowing in the silo 10 is reverse, guarantees the injection quality, and screw rod 2 rotates in silo 10 for cut the melting sizing material, screw rod 2 back-and-forth movement in silo 10, be arranged in injecting injection mold with the sizing material after the melting.

And the nozzle 4 is communicated with the material groove 10 and is arranged at one end of the charging barrel 1, which is far away from the feeding hole 11. Specifically, an adjusting mechanism 5 for controlling the opening and closing of the nozzle 4 is arranged on the nozzle 4, wherein the adjusting mechanism 5 comprises an ejector pin 50 and a nozzle lock 51 for driving the ejector pin 50; the nozzle lock 51 is connected with the thimble 50, specifically, the nozzle lock 51 is a hydraulic nozzle lock, the adjustment is fast and convenient, the nozzle 4 is provided with a thimble hole 40 along the radial direction, the thimble 50 penetrates through the thimble hole 40, and the thimble 50 can move along the axial direction of the thimble hole 40; the thimble 50 is provided with a material guiding hole 501, the cross section of the material guiding hole 501 close to the charging barrel 1 is larger, and the cross section of the end far away from the charging barrel 1 is smaller, so that the sizing material can be ejected from the nozzle at high speed. The nozzle lock 51 can drive the material guide hole 501 to be communicated with the nozzle 4, the nozzle lock 51 can drive the thimble 50 to block the nozzle 4, and the adjusting mechanism 5 controls the nozzle 4 to be closed to prevent the rubber material from flowing out of the nozzle 4 during the early storage; after the material storage is finished, the adjusting mechanism 5 controls the nozzle 5 to be conducted, so that the rubber material can be smoothly injected into the die from the nozzle 4, and the operation is convenient.

Preferably, the screw 2 is a separate screw, and comprises a feeding section 20, a compression section 21 and a plasticizing section 22 which are connected in sequence; add material section 20 and be close to the one end of feed inlet 11, plastify section 22 is in and is close to the one end of nozzle 4, the effect of three-section, divide the worker different, the pitch of compression section 21 all is less than add material section 20 with the pitch of plastify section 22, through the screw thread initial position and the terminal point position of reasonable control screw rod 2 for this plasticizing device can be applicable to most sizing material, improves plasticizing device's application scope.

Specifically, a charging barrel end cover 14 is connected to one end of the charging barrel 1 far away from the feeding hole 11, and the nozzle 4 is embedded in the charging barrel end cover 14; a charging barrel end cover heating ring 15 is arranged on the periphery of the charging barrel end cover 14; a nozzle heating ring 13 is sleeved on the periphery of the nozzle 4; the feed cylinder heating ring 13, the feed cylinder end cover heating ring 15 and the nozzle heating ring 41 which are sequentially arranged ensure that the rubber material is uniformly heated and provide a stable temperature field, ensure that each section of the rubber material is uniformly heated, prevent the cold material or overheating condition, and ensure that the injection efficiency is high and the injection effect is good.

Be equipped with locating piece 42 on nozzle 4, locating piece 42 supports and is in on the thimble 50, guarantees the position accuracy of thimble 50, silo 10 is close to feed inlet 11 department is equipped with a location step 16, cooling jacket 12 cover is established on the location step 16, and the side of cooling jacket 12 support in the side of location step 16 prevents that cooling jacket 12 from drunkenness on feed cylinder 1, specifically, still is provided with nut 60 in the one end of feed cylinder 1 keeping away from nozzle 4, is convenient for fix feed cylinder 1 on the injection stretch blow molding machine, and the one end that nozzle 4 was kept away from to screw rod 2 is provided with hough ring 61 and sealing washer 62, is used for the connection of screw rod 2 and the sealed of sizing material respectively.

The plasticizing device of the scheme can be suitable for various sizing materials, and has a wide application range; the plasticizing device has high working efficiency; the heating control of the plasticizing device is reasonable, the temperature field is balanced, the temperature control is stable, and the injection effect is good.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a plasticizing device of injection stretch blow molding machine which characterized in that, including:

2. The plasticizing device of an injection stretch blow molding machine according to claim 1, wherein the screw is a separate screw comprising a feeding section, a compression section and a plasticizing section which are connected in sequence; the feeding section is located at one end close to the feeding port, and the plasticizing section is located at one end close to the nozzle.

3. A plasticizing unit for an injection stretch blow molding machine as defined in claim 2 wherein the pitch of said compression section is less than the pitch of said charging section and said plasticizing section.

4. A plasticizing unit of an injection stretch blow molding machine according to any one of claims 1 to 3, characterized in that the nozzle is provided with an adjustment mechanism for controlling the opening and closing of the nozzle.

5. The apparatus of claim 4, wherein said adjusting mechanism includes a pin and a nozzle lock for driving said pin; the nozzle lock is connected with the ejector pin;

6. The apparatus of claim 5, wherein the nozzle lock actuates the material guide hole to communicate with the nozzle, and the nozzle lock actuates the pin to block the nozzle.

7. A plasticizing unit of an injection stretch blow molding machine as defined in claim 5, wherein the outer periphery of said nozzle is fitted with a nozzle heating ring; and the nozzle is provided with a positioning block which is propped against the thimble.

8. The plasticizing device of an injection stretch blow molding machine of claim 1 wherein a barrel end cap is connected to an end of the barrel remote from the feed inlet, the nozzle being fitted over the barrel end cap; and a charging barrel end cover heating ring is arranged on the periphery of the charging barrel end cover.

9. A plasticizing unit for an injection stretch blow molding machine as claimed in claim 1, wherein said material tank is provided with a positioning step near said inlet, said cooling jacket is fitted over said positioning step, and the side of said cooling jacket is against the side of said positioning step.