Double-screw quick-open type extruder head

Abstract

The utility model relates to a double-screw quick-open type extruder head, which aims at solving the technical problem that the existing extruder head is complicated to disassemble, and adopts the technical scheme that the double-screw quick-open type extruder head comprises an extrusion mechanism, a net changing mechanism, a suspender mechanism and a machine head, the looped network mechanism uses a double-station filter plate which can be switched mutually, the machine heads are movably connected through the suspender mechanism, the machine heads can be removed more conveniently, the machine heads are connected through the suspender mechanism, the machine heads can be removed more conveniently and rapidly, and when a material formula is changed and a thread sleeve combination needs to be adjusted, the machine heads can be removed more conveniently and rapidly. The machine head can be removed more conveniently and rapidly, the screw can be disassembled more conveniently and rapidly, meanwhile, the working temperature of all extrusion parts can be kept, reheating is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polymer material extrusion granulation equipment, and in particular relates to a twin-screw quick-opening extruder head. Background Art

[0002] With the development of polymer processing industry, higher and higher requirements are put forward for polymer material molding and mixing process, so the twin-screw extruder die head equipment with better performance has been more and more widely used. At present, there are many types of extrusion die heads on the market, and different structures are used according to different products. The main functions of the die head are to change the direction of material flow, compact the material, maintain the material state, and even the material speed.

[0003] However, the traditional granulation extrusion die uses a single screw extruder, which has a relatively simple material formula, a limited scope of use, and a low production capacity. Although the twin-screw extrusion granulation die, which is currently used more frequently, solves the problem of a single material formula, when disassembling and replacing the screw assembly, the extrusion die needs to be cooled and the screen changing parts and the head parts removed at the same time before the screw in the barrel can be pulled out. The operation process is complicated and reduces production efficiency. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a twin-screw quick-opening extruder head.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A twin-screw quick-opening extruder head, comprising an extrusion mechanism, a screen changing mechanism, a suspension rod mechanism, and a head;

[0007] The extrusion mechanism includes two mandrels, two screw sleeves, a barrel and a plurality of heaters. An extrusion channel is horizontally opened in the middle of the barrel. The two mandrels are inserted into the extrusion channel side by side, one end extends out of the extrusion channel and is externally connected to a driving motor, and the other end is a screw head. The two screw sleeves are respectively fixedly sleeved on the two mandrels, and the two screw sleeves are located in the extrusion channel and bite each other. A plurality of slots are opened on the upper and lower sides of the outer wall of the barrel, and the plurality of heaters are clamped in the slots. A feed port is provided on the top surface of the barrel near the mandrel side.

[0008] The screen changing mechanism comprises an oil cylinder, a support plate, two support rods, an upper heater, a rear plate, a front plate, a lower heater, two filter plates and a slide plate. The support plate is fixed on the extrusion equipment bracket, the oil cylinder is fixed on one side of the support plate, one end of the two support rods is fixed horizontally and parallelly on the upper and lower sides of the other side of the support plate, the rear plate and the front plate are arranged vertically and parallelly with a gap between them, the upper heater and the lower heater are respectively fixed on the top and bottom surfaces of the rear plate and the front plate, a through hole is provided in the middle of the side walls of the rear plate and the front plate, and two through holes are provided on the slide plate. The filter hole is provided with two filter plates in the filter hole, the slide plate horizontally passes through the gap between the rear plate and the front plate, a pad is provided between the upper and lower surfaces of the slide plate and the upper heater and the lower heater, the pad is slidably connected to the slide plate, the other ends of the two support rods pass through the pad and are fixedly connected through the connecting plate, the telescopic rod of the oil cylinder passes through the supporting plate and is fixedly connected to the slide plate, the lower heater is fixedly arranged on the extrusion equipment bracket, the rear plate is fixedly arranged on the front end surface of the barrel of the extrusion mechanism, and the through holes on the rear plate and the front plate are connected to the extrusion channel of the extrusion mechanism;

[0009] The suspension rod mechanism includes a fixed block, a twisted shaft, a plurality of connecting rods, a suspension rod bolt and a suspension rod, wherein the fixed block is fixedly arranged in the middle of the top surface of the upper heater, the twisted shaft is vertically fixedly arranged in the middle of the top surface of the fixed block, one end of the connecting rod is hinged to the twisted shaft, a plurality of connecting rods are hinged head to tail in sequence, one end of the suspension rod is hinged to the tail of the connecting rod, the other end of the suspension rod is hinged to the suspension rod bolt, and the suspension rod bolt is fixedly arranged in the middle of the top surface of the machine head;

[0010] The machine head includes a mouth template, a head body and a head body heater, the head body heater is arranged on the upper, lower, left and right sides of the machine head body, the mouth template is arranged on the front end face of the machine head body, and a discharge hole is opened on the head body. The discharge hole of the head body is connected with the extrusion channel of the extrusion mechanism, the through holes on the rear plate and the front plate, and the template channel of the mouth template.

[0011] Furthermore, handles are symmetrically provided on the two side walls of the mouth template.

[0012] Furthermore, the screw sleeve is made of any wear-resistant alloy steel.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The head of the utility model is connected by a suspension rod mechanism, which makes it more convenient and quick to remove the head. When the material formula changes and the screw sleeve combination needs to be adjusted, the head can be removed more conveniently and quickly, and the screw can be disassembled. At the same time, the working temperature of each extrusion component can be maintained to avoid reheating, thereby improving production efficiency;

[0015] 2. The utility model adopts a double-station filtering device and adopts closed-loop control to achieve continuous non-stop operation;

[0016] 3. The screw sleeve combination of the utility model adopts a deep groove and small gap design, which is more conducive to the extrusion of materials and improves the output and quality of products. At the same time, the barrel component matched with the screw component adopts a wear-resistant alloy design, which improves the accuracy and service life of the barrel and optimizes the barrel cooling and temperature measurement design; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model when the machine head is closed;

[0018] Figure 2 This is a schematic diagram of the extrusion mechanism structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the extrusion mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the screen changing mechanism structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the suspension rod mechanism of the utility model;

[0022] Figure 6 This is a schematic diagram of the machine head structure of the utility model;

[0023] Figure 7 It is a schematic diagram of the structure of the utility model when the machine head is opened;

[0024] In the figure: 1. Extrusion mechanism; 2. Screen changing mechanism; 3. Hanging rod mechanism; 4. Machine head;

[0025] 1.1, mandrel; 1.2, screw sleeve; 1.3, feed port; 1.4, barrel; 1.5, heater; 1.6, screw head;

[0026] 2.1, oil cylinder; 2.2, support plate; 2.3, support rod; 2.4, upper heater; 2.5, pad; 2.6, rear plate; 2.7, front plate; 2.8, lower heater; 2.9, filter plate; 2.10, slide plate;

[0027] 3.1, fixed block; 3.2, twisted shaft; 3.3, connecting rod; 3.4, suspension rod bolt; 3.5, suspension rod;

[0028] 4.1. Handle; 4.2. Mouth template; 4.3. Machine head body; 4.4. Machine head body heater. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-7 As shown, a twin-screw quick-opening extruder head comprises an extrusion mechanism 1, a screen changing mechanism 2, a suspension rod mechanism 3, and a head 4;

[0031] The extrusion mechanism 1 includes two mandrels 1.1, two screw sleeves 1.2, a barrel 1.4 and a plurality of heaters 1.5. An extrusion channel is horizontally opened in the middle of the barrel 1.4. The two mandrels 1.1 are inserted into the extrusion channel side by side, one end extends out of the extrusion channel and is externally connected to a driving motor, and the other end is a screw head 1.6. The two screw sleeves 1.2 made of high manganese alloy steel adopt a deep groove and small gap design, which is more conducive to the extrusion of products and improves the output and quality of products. They are fixedly sleeved on the two mandrels 1.1 respectively, and the two screw sleeves 1.2 are located in the extrusion channel and bite each other. A plurality of slots are opened on the upper and lower sides of the outer wall of the barrel 1.4, and the plurality of heaters 1.5 are clamped in the slots. A feed port 1.3 is provided on the top surface of the barrel 1.4 close to the mandrel 1.1 side;

[0032] The two screw sleeves 1.2 adopt application number 202310941702.9, publication number CN116922738A, and the patent name is: A combined screw of a twin-screw extruder and a combined structure in a high-strength polyoxymethylene preparation process;

[0033] The screen changing mechanism 2 comprises an oil cylinder 2.1, a support plate 2.2, two support rods 2.3, an upper heater 2.4, a rear plate 2.6, a front plate 2.7, a lower heater 2.8, two filter plates 2.9 and a slide plate 2.10. The support plate 2.2 is fixed on the extrusion equipment bracket, the oil cylinder 2.1 is fixed on one side of the support plate 2.2, one end of the two support rods 2.3 is fixed horizontally and parallelly on the upper and lower sides of the other side of the support plate 2.2, the rear plate 2.6 and the front plate 2.7 are arranged vertically and parallelly with a gap therebetween, the upper heater 2.4 and the lower heater 2.8 are fixed on the top and bottom surfaces of the rear plate 2.6 and the front plate 2.7 respectively, a through hole is provided in the middle of the side walls of the rear plate 2.6 and the front plate 2.7, two filter holes are provided on the slide plate 2.10, and the two filter plates 2.9 are provided with a plurality of filter holes. It is arranged in the filtering hole, the slide plate 2.10 horizontally passes through the gap between the rear plate 2.6 and the front plate 2.7, and a pad 2.5 is arranged between the upper and lower surfaces of the slide plate 2.10 and the upper heater 2.4 and the lower heater 2.8. The pad 2.5 is slidably connected to the slide plate 2.10, and the other ends of the two support rods 2.3 pass through the pad 2.5 and are fixedly connected through the connecting plate, and the telescopic rod of the oil cylinder 2.1 passes through the support plate 2.2 and is fixedly connected to the slide plate 2.10, and the lower heater 2.8 is fixedly arranged on the extrusion equipment bracket, and the rear plate 2.6 is fixedly arranged on the front end surface of the barrel 1.4 of the extrusion mechanism 1, and the through holes on the rear plate 2.6 and the front plate 2.7 are connected to the extrusion channel of the extrusion mechanism 1, and a double-station filtering device is adopted, and closed-loop control is adopted, so that continuous non-stop operation can be achieved;

[0034] The suspension rod mechanism 3 comprises a fixed block 3.1, a twisted shaft 3.2, a plurality of connecting rods 3.3, a suspension rod bolt 3.4 and a suspension rod 3.5. The fixed block 3.1 is fixedly arranged in the middle of the top surface of the upper heater 2.4. The twisted shaft 3.2 is vertically fixedly arranged in the middle of the top surface of the fixed block 3.1. One end of the connecting rod 3.3 is hinged to the twisted shaft 3.2. A plurality of connecting rods 3.3 are hinged head to tail in sequence. One end of the suspension rod 3.5 is hinged to the tail of the connecting rod 3.3. The other end of the suspension rod 3.5 is hinged to the suspension rod bolt 3.4. The suspension rod bolt 3.4 is fixedly arranged in the middle of the top surface of the machine head 4.

[0035] The machine head 4 includes a mouth template 4.2, a machine head body 4.3 and a machine head body heater 4.4, the machine head body heater 4.4 is arranged on the upper, lower, left and right sides of the machine head body 4.3, the mouth template 4.2 is arranged on the front end face of the machine head body 4.3, and handles 4.1 are symmetrically provided on the two side walls of the mouth template 4.2, and a discharge hole is opened on the machine head body 4.3, and the discharge hole of the machine head body 4.3 is connected with the extrusion channel of the extrusion mechanism 1, the through holes on the rear plate 2.6 and the front plate 2.7, and the template channel of the mouth template 4.2. The machine head part is connected by a suspension rod mechanism, so that the removal of the machine head is more convenient and quick. When the material formula changes and the screw sleeve combination needs to be adjusted, the machine head can be removed more conveniently and quickly, and the screw can be disassembled. At the same time, the working temperature of each extrusion component can be maintained to avoid reheating and improve production efficiency.

[0036] The threaded sleeve 1.2 may also be made of any other wear-resistant alloy steel.

[0037] The working process of this utility model:

[0038] When the utility model is used, in the working state, the connecting rod 3.3 and the hanging rod 3.5 of the hanging rod mechanism 3 are folded up, so that the head body 4.3 of the head 4 is connected with the front plate 2.7 of the screen changing mechanism 2 by bolts, the extrusion channel of the extrusion mechanism 1, the through holes on the rear plate 2.6 and the front plate 2.7, and the template channel of the mouth template 4.2 are connected, the oil cylinder 2.1 is started, and the telescopic rod pushes the slide plate 2.10 to move in the gap between the rear plate 2.6 and the front plate 2.7. When one of the filter plates 2.9 coincides with the through hole, the oil cylinder 2.1 is closed;

[0039] The driving motor is started, and the screw sleeve 1.2 is driven to rotate through the core shaft 1.1. At the same time, the extrusion material is added from the feed port 1.3. Under the rotation and extrusion of the screw sleeve 1.2, the material moves forward along the extrusion channel of the extrusion mechanism 1. When the material reaches the position of the screw head 1.6, the material is further extruded forward by the subsequent material, and is extruded from the filter holes of the filter plate 2.9, and then enters the mouth mold plate 4.2 from the discharge hole of the head body 4.3, and is extruded and formed in the mouth mold plate 4.2;

[0040] During the extrusion process, the heater 1.5 around the barrel 1.4 heats the material in the extrusion mechanism 1, the upper heater 2.4 and the lower heater 2.8 heat the material in the screen changing mechanism 2, and the head body heater 4.4 heats the material in the head 4;

[0041] When the filter plate 2.9 is blocked and needs to be replaced, the drive motor is turned off, the extrusion process is suspended, the oil cylinder 2.1 is started, and its telescopic rod is extended or contracted, driving the slide plate 2.10 to move in the gap between the rear plate 2.6 and the front plate 2.7 until another filter plate 2.9 coincides with the through hole, the oil cylinder 2.1 is turned off, the filter plate 2.9 is replaced, and then the drive motor is started again to continue the extrusion operation. The staff can replace the idle filter plate 2.9 outside the extrusion station;

[0042] When the material formula changes and the screw assembly 1.2 needs to be replaced and adjusted, the oil cylinder 2.1 is closed, the extrusion operation is stopped, the bolts between the head body 4.3 and the front plate 2.7 are loosened, and then the operator holds the handle 4.1 and pulls it outward. Under the action of the pulling force, the suspension rod 3.5 and the connecting rod 3.4 are stretched out, so that the head 4 leaves the extrusion mechanism 1 and the screen changing mechanism 2. Figure 7 As shown, at this time, the maintenance personnel only need to disassemble and remove the screw sleeve 1.2. During the disassembly process, the heater 1.5, the upper heater 2.4, the lower heater 2.8, and the head body heater 4.4 continue to heat the extrusion mechanism 1, the screen changing mechanism 2 and the head 4 to keep the material in the device at the working temperature. After replacement, the operation can be started directly to avoid reheating, thereby greatly improving production efficiency.

Claims

1. A twin-screw quick-opening extruder head, characterized in that: It comprises an extrusion mechanism (1), a screen changing mechanism (2), a suspension rod mechanism (3), and a machine head (4); The extrusion mechanism (1) comprises two mandrels (1.1), two screw sleeves (1.2), a barrel (1.4) and a plurality of heaters (1.5); an extrusion channel is horizontally provided in the middle of the barrel (1.4); the two mandrels (1.1) are inserted into the extrusion channel side by side, one end of the mandrels (1.1) extends out of the extrusion channel and is externally connected to a drive motor, and the other end is a screw head (1.6); the two screw sleeves (1.2) are respectively fixedly sleeved on the two mandrels (1.1); the two screw sleeves (1.2) are located in the extrusion channel and engage with each other; a plurality of slots are provided on the upper and lower sides of the outer wall of the barrel (1.4); the plurality of heaters (1.5) are clamped in the slots; and a feed port (1.3) is provided on the top surface of the barrel (1.4) close to the mandrel (1.1); The screen changing mechanism (2) comprises an oil cylinder (2.1), a support plate (2.2), two support rods (2.3), an upper heater (2.4), a rear plate (2.6), a front plate (2.7), a lower heater (2.8), two filter plates (2.9) and a slide plate (2.10). The support plate (2.2) is fixed on an extrusion equipment bracket. The oil cylinder (2.1) is fixed on one side of the support plate (2.2). One end of the two support rods (2.3) is fixed horizontally and parallelly on the upper and lower sides of the other side of the support plate (2.2). The rear plate (2.6) and the front plate (2.7) are arranged vertically and parallelly with a gap between them. The upper heater (2.4) and the lower heater (2.8) are fixed on the top and bottom surfaces of the rear plate (2.6) and the front plate (2.7) respectively. A through hole is provided in the middle of the side walls of the rear plate (2.6) and the front plate (2.7). The slide plate (2.10) is provided with a through hole. Two filtering holes are provided, the two filtering plates (2.9) are arranged in the filtering holes, the slide plate (2.10) horizontally passes through the gap between the rear plate (2.6) and the front plate (2.7), a pad (2.5) is provided between the upper and lower surfaces of the slide plate (2.10) and the upper heater (2.4) and the lower heater (2.8), the pad (2.5) and the slide plate (2.10) are slidably connected, the other ends of the two support rods (2.3) pass through the pad (2.5) and are fixedly connected through a connecting plate, the telescopic rod of the oil cylinder (2.1) passes through the support plate (2.2) and is fixedly connected to the slide plate (2.10), the lower heater (2.8) is fixedly arranged on the extrusion equipment bracket, the rear plate (2.6) is fixedly arranged on the front end surface of the barrel (1.4) of the extrusion mechanism (1), and the through holes on the rear plate (2.6) and the front plate (2.7) are connected to the extrusion channel of the extrusion mechanism (1); The suspension rod mechanism (3) comprises a fixed block (3.1), a twisted shaft (3.2), a plurality of connecting rods (3.3), a suspension rod bolt (3.4) and a suspension rod (3.5); the fixed block (3.1) is fixedly arranged in the middle of the top surface of the upper heater (2.4); the twisted shaft (3.2) is vertically fixedly arranged in the middle of the top surface of the fixed block (3.1); one end of the connecting rod (3.3) is hinged to the twisted shaft (3.2); a plurality of connecting rods (3.3) are hinged head to tail in sequence; one end of the suspension rod (3.5) is hinged to the tail of the connecting rod (3.3); the other end of the suspension rod (3.5) is hinged to the suspension rod bolt (3.4); and the suspension rod bolt (3.4) is fixedly arranged in the middle of the top surface of the machine head (4); The machine head (4) comprises a mouth template (4.2), a machine head body (4.3) and a machine head body heater (4.4); the machine head body heater (4.4) is arranged on the upper, lower, left and right side surfaces of the machine head body (4.3); the mouth template (4.2) is arranged on the front end surface of the machine head body (4.3); a discharge hole is opened on the machine head body (4.3); the discharge hole of the machine head body (4.3) is connected to the extrusion channel of the extrusion mechanism (1), the through holes on the rear plate (2.6) and the front plate (2.7), and the template channel of the mouth template (4.2).

2. A twin-screw quick-opening extruder head according to claim 1, characterized in that: Handles (4.1) are symmetrically arranged on the two side walls of the mouth template (4.2).

3. A twin-screw quick-opening extruder head according to claim 1, characterized in that: The screw sleeve (1.2) is made of any wear-resistant alloy steel.

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