Multi-section foaming screw rod easy to disassemble

Abstract

The utility model discloses a multi-section type foaming screw rod easy to disassemble, which comprises a central rod and a plurality of functional sections, the diameter of the central rod is sequentially reduced from the tail end to the front end, a spline extending from the tail end to the front end of the central rod is arranged on the central rod, a through hole for the central rod to penetrate is arranged in the functional sections, and the functional sections are arranged on the central rod. A through hole is formed in the center rod, a key groove allowing a spline to penetrate is formed in the through hole, the multiple functional sections are arranged on the center rod in a sleeved mode in an end-to-end butt joint mode, the tail end of the center rod is further provided with the functional section at the foremost end, and the functional section at the foremost end and the center rod are fixed through a fixing mechanism. A water inlet cavity channel and a water outlet cavity channel which are communicated with each other are formed in the center rod; according to the utility model, only the corresponding damaged functional section needs to be replaced, so that the use cost is effectively reduced, and the device is easy to disassemble and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming screws, in particular to a multi-section foaming screw that is easy to disassemble. Background Art

[0002] The foaming screw can mix the molten material with the supercritical fluid. The mixing of the molten material and the supercritical fluid occurs in the supercritical fluid injection section of the screw. The screw body is sequentially provided with a feeding section, a compression section, a melting section, a homogenizing section, a kneading section, and a discharging section in the feeding direction. The compression section, the melting section, and the homogenizing section are provided with helical thread edges. As the screw rotates, the mixture is pushed forward into the compression section and the metering section, and then into the mold. However, the existing screw threads and the screw are integrally formed, so the whole will be scrapped after the module thread section is damaged. Summary of the Utility Model

[0003] To solve the defect that the existing screw threads and the screw are integrally formed in the prior art, and the whole will be scrapped after the module thread section is damaged, the utility model provides a multi-section foaming screw that is easy to disassemble.

[0004] To solve the above technical problems, the utility model provides the following technical solutions:

[0005] A multi-section foaming screw that is easy to disassemble according to the utility model includes a central rod and a plurality of functional sections. The diameter of the central rod gradually decreases from the end to the front, and the central rod is provided with a spline extending from the end to the front. The functional section is provided with a through hole for the central rod to pass through, and the through hole is provided with a keyway for the spline to pass through. A plurality of the functional sections are sleeved on the central rod end to end, and the end of the central rod is further provided with a fixing mechanism for fixing the frontmost functional section and the central rod. And the central rod is provided with a communicating water inlet channel and a water outlet channel.

[0006] As a preferred technical solution of the utility model, the fixing mechanism includes a positioning screw hole provided on the spline, a through hole corresponding to the positioning screw hole is provided on the frontmost functional section, and a positioning bolt is installed between the through hole and the positioning screw hole.

[0007] As a preferred technical solution of the utility model, there are no less than two splines.

[0008] As a preferred technical solution of the utility model, the width and thickness of the spline gradually decrease from the end to the front of the central rod.

[0009] As a preferred technical solution of the utility model, one end of the functional section is provided with a sealing ring groove, and the other end is provided with a sealing ring block. The sealing ring groove and the sealing ring block between adjacent functional sections cooperate with each other.

[0010] The beneficial effects of the present utility model are as follows:

[0011] In the multi - segment foaming screw rod that is easy to disassemble, the central rod and several functional segments adopt a split - type design. A spline extending from the end to the front end of the central rod is provided on the central rod. A through - hole for the central rod to pass through is provided in the functional segment, and a keyway for the spline to pass through is provided on the through - hole. Several of the functional segments are butted end - to - end and sleeved on the central rod. In this way, only the corresponding damaged functional segment needs to be replaced, effectively reducing the use cost, and it is easy to disassemble and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0013] Figure 1 is a schematic structural diagram of a multi - segment foaming screw rod that is easy to disassemble according to the present utility model;

[0014] Figure 2 is a schematic structural diagram of the central rod of a multi - segment foaming screw rod that is easy to disassemble according to the present utility model;

[0015] Figure 3 is a schematic structural diagram of the keyway of a multi - segment foaming screw rod that is easy to disassemble according to the present utility model;

[0016] Figure 4 is a schematic installation diagram of the positioning bolt of a multi - segment foaming screw rod that is easy to disassemble according to the present utility model;

[0017] Figure 5 is a schematic installation diagram of the sealing ring groove bolt of a multi - segment foaming screw rod that is easy to disassemble according to the present utility model;

[0018] Figure 6 is a schematic structural diagram of the water inlet cavity of a multi - segment foaming screw rod that is easy to disassemble according to the present utility model.

[0019] In the figure: 1, central rod; 2, functional segment; 3, spline; 4, through - hole; 5, keyway; 6, blocking block; 7, positioning screw hole; 8, through - hole; 9, positioning bolt; 10, water inlet cavity; 11, butt - joint pipe; 12, sealing ring groove; 13, sealing ring block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following is a description of the preferred embodiments of the present utility model with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0021] Embodiment: As Figure 1-6 shown, a multi - section foaming screw of the present utility model that is easy to disassemble includes a central rod 1 and several functional sections 2. The diameter of the central rod 1 gradually decreases from the end to the front end. A spline 3 extending from the end to the front end of the central rod 1 is provided on the central rod 1. A through - hole 4 for the central rod 1 to penetrate is provided in the functional section 2, and a keyway 5 for the spline 3 to penetrate is provided on the through - hole 4. Several of the functional sections 2 are butted end - to - end and sleeved on the central rod 1. A blocking block 6 is further provided at the end of the central rod 1, and the functional section 2 at the foremost end is fixed to the central rod through a fixing mechanism; and a communicating water inlet channel 10 and a water outlet channel 11 are provided on the central rod 1. The central rod 1 and several functional sections 2 adopt a split - type design. Among them, a spline 3 extending from the end to the front end of the central rod 1 is provided on the central rod 1. A perforation 84 for the central rod 1 to penetrate is provided in the functional section 2, and a keyway 5 for the spline 3 to penetrate is provided on the perforation 84. Several of the functional sections 2 are butted end - to - end and sleeved on the central rod 1. In this way, only the corresponding damaged functional section 2 needs to be replaced, effectively reducing the use cost, and it is easy to disassemble and replace.

[0022] Among them, the fixing mechanism includes a positioning screw hole 7 provided on the spline 3, a perforation 8 corresponding to the positioning screw hole is provided on the functional section 2 at the foremost end, and a positioning bolt 9 is installed between the perforation 8 and the positioning screw hole 7. In this way, by disassembling and installing the positioning bolt, the disassembly and installation of each functional section 2 can be realized.

[0023] Among them, a docking pipe 11 communicating with the water inlet channel 10 is provided at the end of the central rod 1.

[0024] Among them, there are no less than two splines 3.

[0025] Among them, the width and thickness of the spline 3 gradually decrease from the end to the front end of the central rod 1. A sealing ring groove 12 is provided at one end of the functional section 2, and a sealing ring block 13 is provided at the other end. The sealing ring groove 12 and the sealing ring block 13 between adjacent functional sections 2 cooperate with each other. In this way, through the mutual cooperation of the sealing ring groove 12 and the sealing ring block 13, each functional section 2 can be...

[0026] During operation, for this multi - section foaming screw that is easy to disassemble, the central rod 1 and several functional sections 2 adopt a split - type design. Among them, a spline 3 extending from the end to the front end of the central rod 1 is provided on the central rod 1. A perforation 84 for the central rod 1 to penetrate is provided in the functional section 2, and a keyway 5 for the spline 3 to penetrate is provided on the perforation 84. Several of the functional sections 2 are butted end - to - end and sleeved on the central rod 1. In this way, only the corresponding damaged functional section 2 needs to be replaced, effectively reducing the use cost, and it is easy to disassemble and replace.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An easily disassembled multi-stage foaming screw, characterized in that: The invention comprises a central rod (1) and a plurality of functional sections (2), wherein the diameter of the central rod (1) decreases from the end to the front end, and the central rod (1) is provided with a spline (3) extending from the end to the front end of the central rod (1), and the functional section (2) is provided with a through hole (4) for the central rod (1) to pass through, and the through hole (4) is provided with a keyway (5) for the spline (3) to pass through, and the plurality of functional sections (2) are butt-jointed and sleeved on the central rod (1) end to end, and a blocking block (6) is further provided at the end of the central rod (1), and the frontmost functional section (2) is fixed to the central rod via a fixing mechanism; and the central rod (1) is provided with a connected water inlet cavity (10) and a water outlet cavity (11).

2. The easily disassembled multi-stage foaming screw according to claim 1, characterized in that: The fixing mechanism comprises a positioning screw hole (7) provided on the spline (3), a through hole (8) corresponding to the positioning screw hole is provided on the frontmost functional section (2), and a positioning bolt (9) is installed between the through hole (8) and the positioning screw hole (7).

3. The easily disassembled multi-stage foaming screw according to claim 1, characterized in that: The splines (3) are provided with no less than two.

4. The easily disassembled multi-stage foaming screw according to claim 1, characterized in that: The width and thickness of the spline (3) decreases from the end to the front end of the center rod (1).

5. The easily disassembled multi-stage foaming screw according to claim 1, characterized in that: One end of the functional segment (2) is provided with a sealing ring groove (12), and the other end is provided with a sealing ring block (13), and the sealing ring grooves (12) and sealing ring blocks (13) between adjacent functional segments (2) cooperate with each other.

Images