Single-screw extrusion granulator

Abstract

The utility model relates to the technical field of pelletizers, and discloses a single-screw extrusion pelletizer which comprises a base table and a single-shaft screw extruder at the top of the base table, a processing groove is formed in one end of the top of the base table, a detachable machine head mechanism is arranged in the processing groove, the machine head mechanism comprises an arch-shaped limiting frame, and the limiting frame is arranged on the base table. The connecting assemblies are arranged on the two sides of the limiting frame, the limiting frame is connected with the base table through the connecting assemblies, the machine head mechanism is connected with a mold part, and the mold part comprises a fixing frame transversely arranged on the inner side of the limiting frame and at least one set of mold plate bodies arranged in the fixing frame. According to the utility model, the optimized design of the machine head and the mold can improve the production efficiency and the product quality, realize rapid and accurate butt joint and efficient production, the unique design of the machine head mechanism and the mold part realizes rapid and accurate butt joint of the mold and the output end of the single-shaft screw extruder, and the structure is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of granulators, and more specifically to a single-screw extrusion granulator. Background Art

[0002] In the processing of polymer materials such as plastics and rubber, the single-screw extruder granulator used after mixing is an important production equipment. It can extrude the mixed raw materials into granules for subsequent injection molding, extrusion molding and other processes to produce plastic and rubber products. The core parts of the single-screw extruder granulator include the die and the mold. Their design and coordination directly affect production efficiency, product quality and production flexibility.

[0003] However, a major problem in the prior art is that the connection between the die and the output end of the extruder lacks precision, resulting in uneven flow of raw materials, which affects the shape and size of the product and reduces product quality. This problem is particularly prominent in the production of multiple batches and multiple specifications of products. Traditional technology relies on manual adjustment of the connection position between the die and the output end, which is cumbersome and inefficient. Especially during production conversion, manual adjustment can easily lead to inaccurate connection, which causes unstable material flow, increases the defective rate, prolongs downtime, and reduces production efficiency.

[0004] Therefore, how to improve the docking accuracy between the mold and the machine head and improve production efficiency has become a problem that needs to be solved urgently in current technology.

[0005] For this purpose, a single screw extruder granulator is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a single-screw extruder granulator to solve the problems raised by the above-mentioned background technology.

[0007] The technical solution adopted by the utility model to solve the above technical problems is:

[0008] A single-screw extruder granulator comprises a base platform and a single-axis screw extruder on the top of the base platform, a processing groove is provided at one end of the top of the base platform, a detachable head mechanism is arranged inside the processing groove, the head mechanism comprises an arched limit frame and connecting components on both sides of the limit frame, the limit frame is connected to the base platform through the connecting components, the head mechanism is connected to a mold component, the mold component comprises a fixed frame installed on the inner side of the limit frame and arranged laterally, and at least one group of template bodies are arranged inside the fixed frame, the template bodies are embedded in the fixed frame, a docking sleeve is installed on the side of the fixed frame close to the output end of the single-axis screw extruder, the docking sleeve is used to be connected with the round tube sleeve of the extrusion end of the single-axis screw extruder, and the docking sleeve corresponds to a middle group of template bodies, the template bodies are provided with a plurality of mold holes, a pelletizing assembly is arranged on the outer side of the middle group of template bodies, and the pelletizing assembly is arranged at the opening of the processing groove.

[0009] The top of the fixing frame is threadedly connected with at least one set of bolts 1, which extend into the interior of the fixing frame and are connected with corresponding threaded holes on the top of the template body.

[0010] The connecting assembly includes a fixing plate installed on both sides of the limiting frame, and two groups of bolts 2 are threadedly arranged on the fixing plates. One group of bolts 2 connects one end of the fixing plate to the limiting frame, and the other group of bolts 2 connects the other end of the fixing plate to the base.

[0011] The pelletizing assembly includes a cutting box connected to the inside of the processing trough and a discharge trough inclined downward at the bottom of the cutting box. Cutting blades and a second drive motor are respectively arranged inside and outside the cutting box. The output shaft of the second drive motor extends inside the cutting box and is connected to the cutting blade.

[0012] The cutting box is integrally formed with one end of the base platform, and the surface of the cutting box facing the uniaxial screw extruder is hollowed out, and the hollow area inside the discharge chute passes through the wall of the cutting box away from the uniaxial screw extruder.

[0013] A feed hopper is arranged on the top of the single-shaft screw extruder, and a driving motor 1 for driving the single-shaft screw extruder is arranged on the top tail end of the base platform.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The optimized head and mold design improves production efficiency and product quality, and enables fast, accurate docking and efficient production. The unique design of the head mechanism and mold components realizes fast and accurate docking between the mold and the output end of the single-shaft screw extruder. The limit frame is firmly mounted on the base table through the fixing plate and bolts of the connecting assembly. The docking sleeve of the fixed frame is connected to the output end of the extruder. This structure ensures the accuracy and stability of the docking. During the production process, this greatly shortens the equipment debugging and mold replacement time, and improves production efficiency. For example, in the continuous production of multiple batches and multiple specifications of products, the quick docking function allows the equipment to quickly switch to the next batch of production status, reducing downtime and increasing effective production time.

[0016] 2. Flexible mold adaptation and product quality improvement: The three sets of template bodies of the mold components are designed with ingenuity. Users can choose template bodies with different mold holes for installation according to product requirements. This flexibility enables the equipment to adapt to the production requirements of various product shapes and sizes. At the same time, during the extrusion process, the raw materials are extruded through the precisely aligned mold holes, ensuring the high consistency of product shape and quality stability. Whether it is the tiny particles required to produce small precision plastic parts or the large-sized particles of large plastic products, the product quality can be guaranteed to be uniform, effectively reducing defective products caused by mold mismatch or shape error, and improving the overall product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a partial structure diagram of the utility model Figure 1 ;

[0019] Figure 3 It is a partial structure diagram of the utility model Figure 2 ;

[0020] Figure 4 It is a partial structure diagram of the utility model Figure 3 ;

[0021] Figure 5 It is a partial structure diagram of the utility model Figure 4 ;

[0022] Figure 6 It is a partial structure diagram of the utility model Figure 5 .

[0023] Legend: 1. Base table; 101. Processing trough; 2. Single-axis screw extruder; 201. Feed hopper; 202. Drive motor 1; 3. Limit frame; 301. Fixed frame; 302. Bolt 1; 303. Docking sleeve; 304. Fixed plate; 305. Bolt 2; 4. Template body; 401. Mold hole; 5. Cutting box; 501. Drive motor 2; 502. Cutting blade; 503. Discharge trough. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0025] Figure 1-Figure 6 It is the best embodiment of the utility model, and the following Figure 1 -Attached Figure 6 The utility model is further described.

[0026] A single-screw extruder granulator includes a base platform 1 and a single-shaft screw extruder 2 on the top of the base platform 1. The single-shaft screw extruder 2 is a metal cylinder, usually made of heat-resistant, pressure-resistant, high-strength, strong, wear-resistant and corrosion-resistant alloy steel or a composite steel pipe lined with alloy steel, and an extrusion screw is arranged inside the single-shaft screw extruder 2. A feed hopper 201 is arranged on the top of the single-shaft screw extruder 2, and a driving motor 202 for driving the extrusion screw in the single-shaft screw extruder 2 is arranged at the top tail end of the base platform 1.

[0027] A processing groove 101 is provided at one end of the top of the base 1, and a detachable head mechanism is arranged inside the processing groove 101, and the head mechanism includes an arched limit frame 3 and connecting components on both sides of the limit frame 3, and the limit frame 3 is connected to the base 1 through the connecting components. The head mechanism is connected with a mold component, and the mold component includes a fixed frame 301 installed on the inner side of the limit frame 3 and arranged in a horizontal manner, and three groups of template bodies 4 are arranged inside the fixed frame 301. The three groups of template bodies 4 are embedded in the fixed frame 301 and can be slid out. The fixed frame 301 is installed with a docking sleeve 303 on one side close to the output end of the single-axis screw extruder 2. The docking sleeve 303 is used to be connected with the extrusion end of the single-axis screw extruder 2, and the docking sleeve 303 corresponds to the middle group of template bodies 4, and each group of template bodies 4 is provided with a plurality of mold holes 401. The outer side of the middle group of template bodies 4 is provided with a pelletizing assembly, and the pelletizing assembly is arranged at the opening of the processing groove 101.

[0028] The output end of the single-axis screw extruder 2 usually uses a round tube to extrude the kneaded material outward. At this time, the mold component can be quickly positioned and docked with the output end of the single-axis screw extruder 2 by sleeve-jointing the butt sleeve 303 on the round tube at the extrusion end of the single-axis screw extruder 2. The butt sleeve 303 in this technical solution uses a stainless steel sleeve, and the butt sleeve 303 is welded to the fixed frame 301. The outer wall of the butt sleeve 303 fits tightly with the inner wall of the round tube at the extrusion end of the single-axis screw extruder 2. In order to further ensure the sealing performance, a conventional structure such as a sealing pad can be set between the two. Figure 3 As shown, after the round tube at the extrusion end of the single-shaft screw extruder 2 is docked with the docking sleeve 303, the round tube is docked with the end surface of the template body 4, so that the output raw material directly enters the template body 4 for extrusion;

[0029] The extruded raw material will pass through the die hole 401 on the middle template body 4 to form a long strip of corresponding shape. In the present technical solution, the die holes 401 opened in the three groups of template bodies 4 can select hole models of different sizes, or can select the same model of holes. The three groups of template bodies 4 are arranged together, and the other two groups of template bodies 4 serve as standby, and the two groups of template bodies 4 in the standby state can also fix the template bodies 4 in normal use.

[0030] The top of the fixing frame 301 is threadedly connected with three groups of bolts 302, which extend into the fixing frame 301 and are connected to the corresponding threaded holes on the top of the template body 4 to prevent the raw materials output by the single-axis screw extruder 2 from being offset and unable to be aligned with the middle template body 4.

[0031] The connection assembly includes a fixing plate 304 installed on both sides of the limiting frame 3, and two sets of bolts 305 are threadedly arranged on the fixing plate 304. One set of bolts 305 connects one end of the fixing plate 304 to the limiting frame 3, and the other set of bolts 305 connects the other end of the fixing plate 304 to the base 1. The head component placed inside the processing tank 101 is installed and fixed by the bolts 305 on the fixing plate 304.

[0032] The pelletizing assembly includes a cutting box 5 connected to the inside of the processing tank 101 and a discharge tank 503 tilted downward at the bottom of the cutting box 5. A cutting blade 502 and a second drive motor 501 are respectively arranged inside and outside the cutting box 5. The output shaft of the second drive motor 501 extends inside the cutting box 5 and is connected to the cutting blade 502. The cutting blade 502 is composed of a rotating disk and a plurality of small blades tilted at the edge of the rotating disk. The cutting blade 502 is a prior art, so it is not described in detail in the specification.

[0033] The cutting box 5 is integrally formed with one end of the base platform 1 , and the surface of the cutting box 5 facing the uniaxial screw extruder 2 is hollowed out, and the hollow area inside the discharge chute 503 passes through the wall of the cutting box 5 away from the uniaxial screw extruder 2 .

[0034] When the raw materials extruded from the single-axis screw extruder 2 pass through the mold parts to form multiple groups of plastic strips, the plastic strips pass through the corresponding cutting blades 502 after passing through the mold parts, and are sheared by the multiple groups of small blades rotating on the cutting blades 502 to be cut into particles of a certain length. The cutting blades 502 are located directly above the inclined surface of the discharge trough 503, and the particles will fall downward onto the inclined surface of the discharge trough 503 and be discharged from the interior of the cutting box 5.

[0035] The working principle and use process of the utility model are as follows: the arched limiting frame 3 fixes the head mechanism in the processing groove 101 through the connecting components on both sides thereof, the fixing frame 301 is installed on the inner side of the limiting frame 3, and the butt joint sleeve 303 on the side close to the output end of the single-axis screw extruder 2 is sleeved on the round tube at the extrusion end of the single-axis screw extruder 2, so as to realize the rapid positioning and butt joint of the mold component and the output end of the single-axis screw extruder 2;

[0036] A die hole 401 is provided inside the template body 4. When the kneaded raw material is extruded from the output end of the single-shaft screw extruder 2, the raw material is formed into a long strip of corresponding shape through the die hole 401 on the middle template body 4. Die holes 401 of different or the same size can be selected according to production requirements to achieve control of the shape of the extruded raw material.

[0037] The usage process is divided into the following steps:

[0038] First, the preparation stage:

[0039] The docking sleeve 303 on one side of the fixed frame 301 of the head mechanism is docked with the round tube at the extrusion end of the single-axis screw extruder 2. When the rear end face of the limiting frame 3 is tightly fitted with the side wall of the processing groove 101, the docking is in place. After the docking is in place, it can ensure that the end face of the round tube at the extrusion end of the single-axis screw extruder 2 is butted and fitted with the end face of the template body 4. Then, the limiting frame 3 of the head mechanism is fixedly installed on the base platform 1 through the connecting component fixing plate 304 and the bolt 2 305;

[0040] According to production requirements, select a template body 4 with a suitable mold hole 401 model, place it in the fixed frame 301 from one side, and then slide it into the middle position. Use a bolt 302 on the top of the fixed frame 301 to strengthen and fix the template body 4 in the fixed frame 301 to ensure the stability of the template body 4 in the fixed frame 301. After that, another two groups of template bodies 4 can be installed in the fixed frame 301 to ensure the position accuracy of the middle template body 4.

[0041] 2. Start-up and operation phase:

[0042] Start the drive motor 1 202, the external raw material enters the single-shaft screw extruder 2 from the feed hopper 201, the raw material moves to the output end under the action of the extrusion screw, and is extruded through the mold hole 401 of the middle mold body 4 of the mold component to form a long plastic strip;

[0043] At the same time, the second driving motor 501 is started to rotate the cutting blade 502 in the cutting box 5, and the cutting blade 502 cuts the long plastic strip into particles.

[0044] Third, the material arrangement stage:

[0045] The cut particles are discharged from the cutting box 5 through the discharge trough 503 which is inclined downward at the bottom of the cutting box 5 under the action of gravity, thus completing the entire granulation process.

Claims

1. A single-screw extruder granulator, comprising a base platform (1) and a single-shaft screw extruder (2) on top of the base platform (1), characterized in that: A processing groove (101) is provided at one end of the top of the base (1), and a detachable head mechanism is arranged inside the processing groove (101), the head mechanism comprising an arched limit frame (3) and connecting components on both sides of the limit frame (3), the limit frame (3) being connected to the base (1) via the connecting components, the head mechanism being connected to a mold component, the mold component comprising a fixed frame (301) installed on the inner side of the limit frame (3) and arranged laterally, and at least one group of template bodies (4) arranged inside the fixed frame (301), the template bodies The body (4) is embedded and installed inside the fixed frame (301); a docking sleeve (303) is installed on one side of the fixed frame (301) close to the output end of the single-axis screw extruder (2); the docking sleeve (303) is used to be connected with the round tube at the extrusion end of the single-axis screw extruder (2); and the docking sleeve (303) corresponds to a middle group of template bodies (4); the template bodies (4) are provided with a plurality of die holes (401); and a pelletizing assembly is arranged on the outer side of the middle group of template bodies (4); and the pelletizing assembly is arranged at the opening of the processing groove (101).

2. A single screw extruder granulator according to claim 1, characterized in that: The top of the fixing frame (301) is threadedly connected with at least one set of bolts 1 (302), which extend into the interior of the fixing frame (301) and are connected to corresponding threaded holes on the top of the template body (4).

3. A single screw extruder granulator according to claim 1 or 2, characterized in that: The connection assembly comprises a fixing plate (304) mounted on both sides of the limiting frame (3), and two sets of bolts (305) are threadedly arranged on the fixing plate (304), one set of bolts (305) connecting one end of the fixing plate (304) to the limiting frame (3), and the other set of bolts (305) connecting the other end of the fixing plate (304) to the base platform (1).

4. A single screw extruder granulator according to claim 1 or 2, characterized in that: The pelletizing assembly comprises a cutting box (5) connected to the inside of the processing tank (101) and a discharge tank (503) inclined downwardly at the bottom of the cutting box (5); a cutting blade (502) and a second drive motor (501) are respectively arranged inside and outside the cutting box (5); an output shaft of the second drive motor (501) extends inside the cutting box (5) and is connected to the cutting blade (502).

5. A single screw extruder granulator according to claim 4, characterized in that: The cutting box (5) is integrally formed with one end of the base platform (1), and the surface of the cutting box (5) at one end facing the single-axis screw extruder (2) is hollowed out, and the hollow area inside the discharge chute (503) passes through the wall of the cutting box (5) at one end away from the single-axis screw extruder (2).

6. A single screw extruder granulator according to claim 1, characterized in that: A feed hopper (201) is arranged at the top of the single-shaft screw extruder (2), and a driving motor 1 (202) for driving the single-shaft screw extruder (2) is arranged at the top tail end of the base platform (1).

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