Granulating knife mounting structure of head of screw extruder

Abstract

The utility model relates to the technical field of screw extruders, and discloses a screw extruder head pelletizing cutter mounting structure which comprises a mounting head and a pelletizing blade, the top of the pelletizing blade is connected into a clamping groove in an inserted mode, turntables are arranged on the two sides of the mounting head, movable columns are arranged in the turntables, and the movable columns are arranged in the mounting head. The interior of the rotating disc is rotationally connected to one end of the movable column, one end of the movable column is fixedly connected with the fixing ring, the fixing ring is located in the rotating disc, one end of the movable column is fixedly connected with the inserting block, the inserting groove is machined in the top of the pelletizing blade, and the inserting block is connected to the interior of the inserting groove in a clamped mode. The rotating disc drives the rotating shaft and the limiting rods to rotate, so that the two ends of the limiting rods are separated from the interiors of the limiting grooves, then the inserting blocks are separated from the interiors of the inserting grooves, then the rotating disc is pulled outwards, the rotating disc drives the movable columns and the inserting blocks to move through the fixing rings, the inserting blocks are separated from the interiors of the inserting grooves, and therefore the pelletizing blades can be conveniently taken down for replacement.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw extruder technical field, concretely is a screw extruder head pelletizing cutter mounting structure. BACKGROUND

[0002] With the progress of petrochemical industry, various new plastic materials are emerging, such as polyethylene, polypropylene, polyvinyl chloride, etc., and the requirements for plastic processing equipment are also increasing. Screw extruder needs continuous improvement and innovation to adapt to the processing characteristics of different plastic materials and meet the growing demand for plastic product production.

[0003] Plastic products are widely used in many fields such as construction, automobile, electronics, medical treatment, etc. Different fields have different requirements for the performance and quality of plastic products. For example, automotive interior parts need to have good flexibility and aesthetics, and electronic component housings need to have high precision and good insulation performance, which requires screw extruders to achieve more precise process control and more complex molding process.

[0004] In the process of pulling and cutting, the extruder extrudes plastic into strips, and the pulling and cutting knife is installed on the cutting machine. Through cooperation with the traction device, when the plastic strip is pulled to the cutting knife position, the cutting knife cuts the plastic strip into particles of a certain length at a certain speed and frequency. For example, when producing common polyethylene and polypropylene particles, this cutting method is usually used.

[0005] For the existing related technology, the inventor believes that the following defects exist: the existing cutting knife is generally fixed on the extruder head by bolts. When the cutting knife is worn out after long-term use, tools need to be used to disassemble the bolts, which makes disassembly and installation more troublesome. INVENTION CONTENTS

[0006] To solve the technical problem that the existing cutting knife needs to be disassembled by tools when it is worn out after long-term use, resulting in more troublesome disassembly and installation, the utility model provides a screw extruder head pelletizing cutter mounting structure.

[0007] The utility model adopts the following technical scheme: a screw extruder head pelletizing cutter mounting structure, including installation head and pelletizing blade, the inside of installation head is processed with clamping groove, the top of pelletizing blade is insertedly connected in the inside of clamping groove, the both sides of installation head are provided with rotating disc, the inside of rotating disc is provided with movable column, the inside of rotating disc is rotatably connected in one end of movable column, one end of movable column is fixedly connected with fixed ring, fixed ring is located in the inside of rotating disc, one end of movable column is fixedly connected with plug, the top of pelletizing blade is processed with insertion slot, plug is connected in the inside of insertion slot in clamping mode.

[0008] Preferably, the inside of the mounting head is processed with a recess, and the movable column is movably connected in the inside of the recess.

[0009] Preferably, the outside of the movable column is provided with a reset spring, one end of the reset spring is fixedly connected to one side of the plug block, and the other end of the reset spring is fixedly connected to one side of the inner wall of the recess.

[0010] Preferably, the inside of the movable column is rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected to the inside of the rotating disc, and the other end of the rotating shaft is fixedly connected with a limiting rod.

[0011] Preferably, the inside of the plug block is processed with a movable slot, and the limiting rod is rotatably connected in the inside of the movable slot.

[0012] Preferably, the outside of the plug slot is processed with two limiting grooves, and the two ends of the limiting rod are insertedly connected in the inside of the limiting grooves.

[0013] Preferably, one side of the rotating disc is fixedly connected with two positioning pins, one side of the mounting head is processed with two positioning holes, and the positioning pins are insertedly connected in the inside of the positioning holes.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In use, the rotating disc drives the rotating shaft and the limiting rod to rotate by rotating the rotating disc, the two ends of the limiting rod are separated from the inside of the limiting grooves, the plug block is separated from the inside of the plug slot, the rotating disc drives the movable column and the plug block to move by pulling the rotating disc outward, the plug block is separated from the inside of the plug slot, and the cutting blade can be conveniently taken down and replaced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the mounting head and the cutting blade connecting structure schematic diagram of the utility model;

[0018] Figure 3 It is the movable column and the rotating shaft connecting structure schematic diagram of the utility model;

[0019] Figure 4 It is the Figure 2 It is the enlarged schematic diagram of middle A part of the utility model.

[0020] In the figure: 1, install the head; 2, cut the grain blade; 3, carousel; 4, card slot; 5, fixed ring; 6, movable column; 7, plug; 8, plug-in slot; 9, recess; 10, return spring; 11, rotating shaft; 12, limit rod; 13, movable slot; 14, limit slot; 15, positioning pin; 16, positioning hole. DETAILED DESCRIPTION

[0021] The utility model will be described further, combining with the drawings and specific implementation, it is explained that under the premise that there is no conflict, the following described each embodiment or each technical feature between can be combined to form new embodiment.

[0022] Example 1: please refer to Figure 1 Figure 4 The screw extruder head cutting grain knife installation structure of the embodiment includes installation head 1 and cutting grain blade 2, the inside of installation head 1 is processed with card slot 4, the top of cutting grain blade 2 is connected in the inside of card slot 4 in plug-in mode, the both sides of installation head 1 are provided with carousel 3, the inside of carousel 3 is provided with movable column 6, carousel 3 is rotatably connected at one end of movable column 6, one end of movable column 6 is fixedly connected with fixed ring 5, and fixed ring 5 is located in the inside of carousel 3, one end of movable column 6 is fixedly connected with plug 7, and the top of cutting grain blade 2 is processed with plug-in slot 8, plug 7 is connected in the inside of plug-in slot 8 in clamping mode;

[0023] When cutting grain blade 2 needs to be disassembled, carousel 3 is pulled outwards, carousel 3 will drive fixed ring 5 to move outwards, fixed ring 5 will drive movable column 6 to move, movable column 6 will drive plug 7 to move, plug 7 will extrude return spring 10, so that plug 7 is separated from the inside of plug-in slot 8, so that the top of cutting grain blade 2 is separated from the inside of installation head 1, and cutting grain blade 2 is conveniently removed for replacement;

[0024] Further, the inside of installation head 1 is processed with recess 9, movable column 6 is movably connected in the inside of recess 9, when carousel 3 drives movable column 6 to move, movable column 6 will move along the inside of recess 9;

[0025] Further, the outside of movable column 6 is provided with return spring 10, one end of return spring 10 is fixedly connected on one side of plug 7, the other end of return spring 10 is fixedly connected on one side of the inner wall of recess 9, by being provided with return spring 10, when carousel 3 is pulled, movable column 6 will drive return spring 10 to compress through plug 7, when carousel 3 is released, return spring 10 resets and elongates, return spring 10 will drive plug 7 to move, so that plug 7 is plugged into the inside of plug-in slot 8;

[0026] ​Further, the inside of the movable column 6 is rotatably connected with a rotating shaft 11, one end of the rotating shaft 11 is fixedly connected with the inside of the rotating disc 3, the other end of the rotating shaft 11 is fixedly connected with a limiting rod 12, the inside of the plug block 7 is processed with a movable slot 13, the limiting rod 12 is rotatably connected with the inside of the movable slot 13, the outside of the plug slot 8 is processed with two limiting slots 14, the two ends of the limiting rod 12 are insertedly connected with the inside of the limiting slots 14;

[0027] When the cutting blade 2 needs to be disassembled, the rotating disc 3 is rotated, the rotating disc 3 drives the rotating shaft 11 to rotate, the rotating shaft 11 rotates along the inside of the movable column 6, the rotating shaft 11 rotates and drives the limiting rod 12 to rotate, the limiting rod 12 rotates along the inside of the movable slot 13, so that the two ends of the limiting rod 12 are separated from the inside of the limiting slot 14, and then the plug block 7 can be separated from the inside of the plug slot 8;

[0028] Further, one side of the rotating disc 3 is fixedly connected with two positioning pins 15, one side of the mounting head 1 is processed with two positioning holes 16, the positioning pins 15 are insertedly connected with the inside of the positioning holes 16, when the rotating disc 3 is pulled outward, the rotating disc 3 drives the positioning pins 15 to move outward, so that the positioning pins 15 are separated from the inside of the positioning holes 16, thereby releasing the limiting of the rotating disc 3, when one end of the positioning pin 15 is inserted into the inside of the positioning hole 16, the positioning pin 15 limits the rotating disc 3, avoiding that the rotating disc 3 rotates to drive the rotating shaft 11 and the limiting rod 12 to rotate;

[0029] Working principle: when the rotating disc 3 is pulled outward, the rotating disc 3 drives the positioning pins 15 to move outward and separate from the inside of the positioning holes 16, then the rotating disc 3 is rotated, the rotating disc 3 drives the rotating shaft 11 and the limiting rod 12 to rotate, so that the two ends of the limiting rod 12 are separated from the inside of the limiting slot 14, and then the plug block 7 can be separated from the inside of the plug slot 8, the rotating disc 3 drives the movable column 6 and the plug block 7 to move through the fixed ring 5, the plug block 7 extrudes the return spring 10, so that the plug block 7 is separated from the inside of the plug slot 8, thereby facilitating the cutting blade 2 to be taken off and replaced.

[0030] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application, any non-substantial change and replacement made by the person skilled in the art on the basis of the present application belongs to the scope of protection of the present application.

Claims

1. A screw extruder head cutter mounting structure comprising a mounting head (1) and a cutter blade (2), characterized in that, The inside of the installation head (1) is processed with a clamping groove (4), the top of the cutting blade (2) is insertedly connected in the inside of the clamping groove (4), both sides of the installation head (1) are provided with a rotating disc (3), the inside of the rotating disc (3) is provided with a movable column (6), the inside of the rotating disc (3) is rotatably connected at one end of the movable column (6), one end of the movable column (6) is fixedly connected with a fixed ring (5), the fixed ring (5) is located in the inside of the rotating disc (3), one end of the movable column (6) is fixedly connected with an insertion block (7), the top of the cutting blade (2) is processed with an insertion slot (8), the insertion block (7) is clampedly connected in the inside of the insertion slot (8).

2. A screw extruder head die cutter mounting structure according to claim 1, wherein The inside of the installation head (1) is processed with a recess (9), the movable column (6) is movably connected in the inside of the recess (9).

3. A screw extruder head die cutter mounting structure according to claim 2, wherein The outside of the movable column (6) is provided with a return spring (10), one end of the return spring (10) is fixedly connected on one side of the insertion block (7), the other end of the return spring (10) is fixedly connected on one side of the inner wall of the recess (9).

4. A screw extruder head die cutter mounting structure according to claim 1 wherein, The inside of the movable column (6) is rotatably connected with a rotating shaft (11), one end of the rotating shaft (11) is fixedly connected in the inside of the rotating disc (3), the other end of the rotating shaft (11) is fixedly connected with a limiting rod (12).

5. A screw extruder head die cutter mounting structure according to claim 4, wherein The inside of the insertion block (7) is processed with a movable slot (13), the limiting rod (12) is rotatably connected in the inside of the movable slot (13).

6. A screw extruder head die cutter mounting structure according to claim 5 wherein, The outside of the insertion slot (8) is processed with two limiting grooves (14), both ends of the limiting rod (12) are insertedly connected in the inside of the limiting grooves (14).

7. A screw extruder head die cutter mounting structure according to claim 1 wherein, One side of the rotating disc (3) is fixedly connected with two positioning pins (15), one side of the installation head (1) is processed with two positioning holes (16), the positioning pins (15) are insertedly connected in the inside of the positioning holes (16).

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