CN212312585U - Injection molding machine nozzle - Google Patents
Injection molding machine nozzle Download PDFInfo
- Publication number
- CN212312585U CN212312585U CN201922293337.7U CN201922293337U CN212312585U CN 212312585 U CN212312585 U CN 212312585U CN 201922293337 U CN201922293337 U CN 201922293337U CN 212312585 U CN212312585 U CN 212312585U
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- nozzle
- cylindrical cavity
- molding machine
- thimble
- guide rod
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a nozzle of an injection molding machine, which comprises a nozzle, a nozzle guide rod and an injection screw rod, wherein the nozzle is sleeved on the nozzle guide rod, the injection screw rod is inserted in the nozzle guide rod, and the nozzle consists of a cylindrical ring at the front end and a funnel body at the rear end; the injection screw is internally provided with a cylindrical cavity for accommodating the thimble to move, the cylindrical cavity is surrounded by a plurality of first breather pipes communicated with the cylindrical cavity, and the first breather pipes are communicated with a high-pressure air source and an organic cleaning liquid supply source. The utility model discloses can in time clear up the inside remaining solution of nozzle, reduce the jam of nozzle.
Description
Technical Field
The utility model belongs to injection and spare part field, concretely relates to injection molding machine nozzle.
Background
An injection molding machine is a mechanical device for making plastic articles by melting solid raw materials and then injecting them into a mold through a feed tube and a nozzle to be molded. In the currently used injection molding equipment, the raw material in a molten state still remains in the nozzle after the injection is completed, and particularly, the phenomenon is more serious when the viscosity of the raw material is relatively low. In addition, the molten plastic retained at the injection hole of the nozzle is liable to block the injection hole, and the post-treatment is troublesome, which may affect the normal production.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides an injection molding machine nozzle.
Realize above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
a nozzle of an injection molding machine comprises a nozzle, a nozzle guide rod and an injection screw rod, wherein the nozzle is sleeved on the nozzle guide rod, the injection screw rod is inserted into the nozzle guide rod, and the nozzle consists of a cylindrical ring at the front end and a funnel body at the rear end; the injection screw is internally provided with a cylindrical cavity for accommodating the thimble to move, the cylindrical cavity is surrounded by a plurality of first breather pipes communicated with the cylindrical cavity, and the first breather pipes are communicated with a high-pressure air source and an organic cleaning liquid supply source.
As a further improvement of the present invention, the length of the cylindrical cavity is at least twice as long as the length of the thimble, and the diameter of the thimble is equal to the inner diameter of the cylindrical cavity.
As a further improvement of the utility model, the first breather pipe is in the distance from the vent hole of the cylindrical cavity to the top end of the cylindrical cavity is less than the length of the thimble.
As a further improvement of the utility model, the diameter of the thimble is equal to the inner diameter of the cylindrical ring.
As a further improvement of the present invention, the funnel body has a gap between the inner part and the outer wall of the nozzle guide rod, the cleaning mechanism further comprises a plurality of communicating tubes for communicating with the second vent tube in the gap, the second vent tube communicates with the tail end of the funnel body, the nozzle guide rod and the injection screw rod are provided with a through hole for penetrating.
As a further improvement of the utility model, the other end of the second vent pipe is communicated with the high-pressure air source and the organic cleaning liquid supply source.
The utility model has the advantages that: the utility model discloses can in time clear up the inside remaining solution of nozzle, reduce the jam of nozzle.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
wherein: 1-nozzle, 10-cylindrical ring, 11-funnel body, 2-nozzle guide rod, 3-injection screw, 41-thimble, 42-cylinder, 43-cylindrical cavity, 44-first vent pipe, 45-second vent pipe, 46-gap, 47-through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following description is made in detail for the application of the principles of the present invention with reference to the accompanying drawings.
A nozzle of an injection molding machine comprises a nozzle 1, a nozzle guide rod 2 and an injection screw rod 3, wherein the nozzle 1 is sleeved on the nozzle guide rod 2, the injection screw rod 3 is inserted in the nozzle guide rod 2, and the nozzle 1 consists of a cylindrical ring 10 at the front end and a funnel body 11 at the rear end.
The injection screw rod cleaning mechanism comprises an ejector pin 41 and an air cylinder 42 which are arranged in the center line of the injection screw rod 3 and are mutually connected, a cylindrical cavity 43 for accommodating the ejector pin 41 to move is arranged in the injection screw rod 3, and the injection screw rod 3 also comprises a plurality of first air pipes 44 which are communicated with the cylindrical cavity 43 and surround the cylindrical cavity 43. The first vent pipe 44 is communicated with the high-pressure gas source and the organic cleaning solution supply source simultaneously through the reversing valve.
The length of the cylindrical cavity 43 is at least two times of the length of the thimble 41, and the diameter of the thimble 41 is equal to the inner diameter of the cylindrical cavity 43.
The distance from the vent hole of the cylindrical cavity 43 of the first vent pipe 44 to the top end of the cylindrical cavity 43 is smaller than the length of the thimble 41. When the cleaning mechanism is started, the end surface of the ejector pin 41 is flush with the end surface of the cylindrical cavity 43, and the first vent pipe 44 is blocked by the surface of the ejector pin 41, so that the opening of the first vent pipe 44 is prevented from being blocked by the backflow of the solution when the injection molding machine operates. During the process of removing the residue, the air cylinder 42 drives the thimble 41 to move to the extreme end of the cylindrical cavity 43, and the first vent pipe 44 is communicated with the cylindrical ring 10.
The diameter of the thimble 41 is equal to the inner diameter of the cylindrical ring 10.
A gap 46 is formed between the inner part of the funnel body 11 and the outer wall of the nozzle guide rod 2, the cleaning mechanism further comprises a plurality of second vent pipes 45 communicated with the gap 46, the second vent pipes 45 are communicated with the tail end of the funnel body 11, and through holes 47 are formed in the nozzle guide rod 2 and the injection screw rod 3.
The first vent pipe 44 and the second vent pipe 45 are communicated with a high-pressure gas source and an organic cleaning liquid supply source. In the cleaning process, firstly, the thimble 41 is driven by the cylinder 42 to retract to the tail end of the cylindrical cavity 43, then the organic liquid and the high-pressure gas are sequentially introduced to thoroughly clean the residual raw material attached to the inner wall, and in the process, the thimble 41 is matched with the back-and-forth movement between the top end of the cylindrical ring 10 and the tail end of the cylindrical cavity 43 to thoroughly clean the residual melt.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A nozzle of an injection molding machine is characterized in that: the injection device comprises a nozzle (1), a nozzle guide rod (2) and an injection screw (3), wherein the nozzle (1) is sleeved on the nozzle guide rod (2), the injection screw (3) is inserted into the nozzle guide rod (2), and the nozzle (1) consists of a cylindrical ring (10) at the front end and a funnel body (11) at the rear end;
the cleaning mechanism comprises a thimble (41) and an air cylinder (42) which are arranged in the middle line of the injection screw (3) and are mutually connected, a cylindrical cavity (43) for accommodating the thimble (41) to move is arranged in the injection screw (3), a plurality of first breather pipes (44) communicated with the cylindrical cavity (43) are arranged around the cylindrical cavity (43), and the first breather pipes (44) are communicated with a high-pressure air source and an organic cleaning liquid supply source.
2. The injection molding machine nozzle of claim 1, wherein: the length of the cylindrical cavity (43) is at least more than twice of the length of the thimble (41), and the diameter of the thimble (41) is equal to the inner diameter of the cylindrical cavity (43).
3. The injection molding machine nozzle of claim 2, wherein: the distance from the vent hole of the first vent pipe (44) in the cylindrical cavity (43) to the top end of the cylindrical cavity (43) is smaller than the length of the thimble (41).
4. The injection molding machine nozzle of claim 1, wherein: the diameter of the thimble (41) is equal to the inner diameter of the cylindrical ring (10).
5. The injection molding machine nozzle of claim 1, wherein: a gap (46) is formed between the inner part of the funnel body (11) and the outer wall of the nozzle guide rod (2), the cleaning mechanism further comprises a plurality of second vent pipes (45) communicated with the gap (46), the second vent pipes (45) are communicated to the tail end of the funnel body (11), and the nozzle guide rod (2) and the injection screw rod (3) are provided with through holes (47).
6. The injection molding machine nozzle of claim 5, wherein: the other end of the second vent pipe (45) is communicated with a high-pressure air source and an organic cleaning liquid supply source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922293337.7U CN212312585U (en) | 2019-12-19 | 2019-12-19 | Injection molding machine nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922293337.7U CN212312585U (en) | 2019-12-19 | 2019-12-19 | Injection molding machine nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212312585U true CN212312585U (en) | 2021-01-08 |
Family
ID=74029760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922293337.7U Active CN212312585U (en) | 2019-12-19 | 2019-12-19 | Injection molding machine nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212312585U (en) |
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2019
- 2019-12-19 CN CN201922293337.7U patent/CN212312585U/en active Active
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