A plastic injection molding machine extrusion screw structure

Abstract

The utility model relates to an injection molding machine extrusion screw structure of uniform speed discharge, including screw head structure, screw rod body structure and tail end connecting rod structure, screw rod body structure includes tail connecting end, middle extrusion spiral section and head connecting end, middle extrusion spiral section includes rear end extrusion screw section and expansion discharge screw section, and the front end of expansion discharge screw section is provided with internal connection structure, internal connection structure is connected with screw head structure through screw head sleeve body, and tail connecting end includes tail linkage body connected with tail connecting end, and the limiting connecting end head of being established in the rear end of tail linkage body. Through the fixed connection of being provided with double -end internal thread body between screw main part and screw head, make the convenient of the connection of both, utilize the multi -section clamping groove of screw head sleeve body and set up the connecting place of both, can make the connection more stable, make the connection of screw main part and screw head more convenient, through setting up double -end internal thread body structure makes the replacement and cleaning of both more convenient.

Description

Technical Field

[0001] This utility model relates to the field of injection molding screw technology, and in particular to an injection molding machine extrusion screw structure with uniform discharge speed. Background Technology

[0002] The injection screw is a crucial component of an injection molding machine. Its main function is to convey, compact, melt, mix, and pressurize plastic granules. During injection molding, the screw melts the plastic and precisely delivers it to the injection head. Traditional injection molding machine screws consist of a screw body, a screw head, and a connector. The screw body and connector are often machined as a single piece, and the connection between the screw head and screw body is a threaded connection. However, after the screw structure has completed the delivery of the injection molding material, it needs to be disassembled for cleaning. The existing threaded connection makes disassembly between the screw head and screw body inconvenient. This means that when replacing the screw head or screw body, this threaded connection makes reassembly very difficult, and it can also cause problems with material flow between the screw head and screw body. Utility Model Content

[0003] The purpose of this invention is to provide an injection molding machine extrusion screw structure with uniform discharge speed, solving the problems of inconvenient connection between the screw head and the screw body of ordinary injection molding screws and unsmooth material extrusion from the screw head.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an injection molding machine extrusion screw structure with uniform speed discharge, including a screw head structure, a screw body structure, and a tail end connecting rod structure. The screw body structure includes a tail connecting end, an intermediate extrusion spiral section, and a head connecting end. The intermediate extrusion spiral section includes a rear extrusion screw section and an expansion discharge screw section. An internal connection structure is provided at the front end of the expansion discharge screw section. The internal connection structure is connected to the screw head structure through a screw head sleeve. The tail connecting end includes a tail linkage body connected to the tail connecting end and a limiting connection end provided at the rear end of the tail linkage body.

[0005] The screw head structure includes a screw head connector and an extrusion head body connected to the front end of the screw head connector. The extrusion head body includes a feed cone section, an extrusion head connecting extension section connected to the feed cone section, and an outlet head.

[0006] An extrusion guide thread is provided at the right end of the discharge head, an internal discharge thread is provided at the front end of the discharge head, and a discharge cone surface is provided at the front end of the discharge head.

[0007] The outer side of the screw head connector is provided with a multi-segment slot that connects to the screw head sleeve.

[0008] The internal structure is a double-ended internal threaded body located at the front end of the expansion discharge screw section. The beneficial effects of this utility model are as follows: The screw body and screw head are threadedly fixed together by an internal connection structure with a double-ended internal threaded body, making connection and disassembly more convenient. Furthermore, the multi-segment slots of the screw head sleeve secure the connection point, resulting in a more stable connection and easier assembly of the screw body and screw head. The double-ended internal threaded body structure also facilitates disassembly, replacement, and cleaning. This allows for rapid disassembly of the screw body, improving the efficiency of screw body assembly and disassembly.

[0009] The discharge head is connected to the feed cone section and the extrusion head extension section. An extrusion guide thread is provided on the right end of the discharge head, and an internal discharge thread is provided at the front end of the discharge head to ensure smooth and stable discharge.

[0010] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of the screw rod.

[0013] Figure 3 for Figure 1 A schematic diagram of the structure of the screw head.

[0014] Figure 4 for Figure 3 Enlarged view of a specific area.

[0015] In the diagram: 1. Rear extrusion screw section, 2. Expansion discharge screw section, 3. Internal connection structure, 4. Rear connector thread, 5. Screw head assembly, 6. Tail linkage, 7. Limiting connection end, 8. Screw head connector, 9. Feed conical section, 10. Extrusion head connection extension section, 11. Discharge head, 12. Extrusion discharge thread, 13. Discharge internal thread, 14. Discharge conical surface, 15. Multi-segment slot. Detailed Implementation

[0016] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in the application text to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1, as Figure 1-4 As shown, an injection molding machine extrusion screw structure with uniform discharge speed includes a screw head structure, a screw body structure, and a tail end connecting rod structure. The screw body structure includes a tail connecting end, an intermediate extrusion spiral section, and a head connecting end. The intermediate extrusion spiral section includes a rear extrusion screw section 1 and an expanding discharge screw section 2. The front end of the expanding discharge screw section is provided with an internal connection structure 3. The internal connection structure 3 is a double-ended internal threaded body located at the front end of the expanding discharge screw section. The double-ended internal threaded body is connected to the screw head structure through a screw head sleeve 5. The tail connecting end includes a tail linkage body 6 connected to the tail connecting end, a limiting connecting end 7 located at the rear end of the tail linkage body, and a rear connecting body mounting thread 4 located at the front end of the tail linkage body 6.

[0018] The screw head structure includes a screw head connector 8 and an extrusion head body connected to the front end of the screw head connector. The extrusion head body includes a feed cone section 9, an extrusion head connecting extension section 10 connected to the feed cone section, and an outlet head 11.

[0019] An extrusion guide thread 12 is provided at the right end outside the discharge head, an internal discharge thread 13 is provided at the front end outside the discharge head, and a discharge cone surface 14 is provided at the front end of the discharge head.

[0020] The outer side of the screw head connector is provided with a multi-segment slot 15 that connects to the screw head sleeve body.

[0021] The screw body and screw head are connected by a threaded structure with a double-ended internal thread, making connection and disassembly easier. The multi-segment grooves on the screw head assembly further stabilize the connection, making the connection between the screw body and screw head more convenient. The double-ended internal thread structure also facilitates disassembly, replacement, and cleaning. This allows for rapid disassembly of the screw body, improving the efficiency of screw body assembly and disassembly.

[0022] The discharge head is connected to the feed cone section and the extrusion head extension section. An extrusion guide thread is provided on the right end of the discharge head, and an internal discharge thread is provided at the front end of the discharge head to ensure smooth and stable discharge.

[0023] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

[0024] The parts not covered in this utility model are the same as or can be implemented using existing technologies.

Claims

1. A uniform-speed discharge injection molding machine extrusion screw structure, comprising a screw head structure, a screw body structure, and a tail-end connecting rod structure, characterized in that: The screw body structure includes a tail connecting end, an intermediate extrusion spiral section, and a head connecting end. The intermediate extrusion spiral section includes a rear extrusion screw section and an expansion discharge screw section. The front end of the expansion discharge screw section is provided with an internal connection structure. The internal connection structure is connected to the screw head structure through a screw head sleeve. The tail connecting end includes a tail linkage body connected to the tail connecting end and a limiting connecting end located at the rear end of the tail linkage body.

2. The injection molding machine extrusion screw structure with uniform discharge as described in claim 1, characterized in that: The screw head structure includes a screw head connector and an extrusion head body connected to the front end of the screw head connector. The extrusion head body includes a feed cone section, an extrusion head connecting extension section connected to the feed cone section, and an outlet head.

3. The injection molding machine extrusion screw structure with uniform discharge as described in claim 2, characterized in that: An extrusion guide thread is provided at the right end of the discharge head, an internal discharge thread is provided at the front end of the discharge head, and a discharge cone surface is provided at the front end of the discharge head.

4. The injection molding machine extrusion screw structure with uniform discharge as described in claim 1, characterized in that: The outer side of the screw head connector is provided with a multi-segment slot that connects to the screw head sleeve.

5. The injection molding machine extrusion screw structure with uniform discharge as described in claim 1, characterized in that: The internal connection structure is a double-ended internal threaded body located at the front end of the expansion discharge screw section.

Images