Hot melt extrusion granulation device

Abstract

The utility model relates to hot melt extrusion granulation technical field, concretely relates to a kind of hot melt extrusion granulation device, including extrusion host, the top of extrusion host is provided with feed cylinder, the rear side of extrusion host is sequentially provided with cooling water tank and granulating host, further include: extrusion die head, set in the rear end of extrusion host, the middle of extrusion die head is provided with fitting installation groove.The utility model is arranged in parallel on the template adjusting frame of the front side of extrusion die head by multiple replaceable discharge templates, the extrusion hole shape or aperture size of each discharge template is different, the template adjusting frame is connected by lifting drive mechanism between extrusion die head, so that the template adjusting frame can be moved in vertical direction, by controlling lifting drive mechanism to aim at target discharge template and slide into fitting installation groove in the front end of extrusion die head, replacement can be completed, discharge template can be replaced quickly according to demand, and downtime is reduced, thereby improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hot melt extrusion granulation technology, and in particular to a hot melt extrusion granulation device. Background Technology

[0002] Hot melt extrusion granulation technology is a continuous production process that involves heating and melting materials, extruding them, and then cutting them into granules. It is widely used in plastics, pharmaceuticals, food, and chemical industries. Traditional hot melt extrusion granulation equipment typically includes core modules such as a feeding system, extruder, die, cooling system, and pelletizing device. Its working principle is as follows: after being plasticized and extruded by the screw, the material passes through the extrusion orifice of the die to form strips or molten material with a specific cross-sectional shape. This material is then cooled and solidified, and cut into granules by the pelletizing device. This type of equipment has the advantages of high production efficiency and good granule uniformity, and is especially suitable for processing high-viscosity materials.

[0003] However, existing hot melt extrusion granulation equipment has significant shortcomings in practical applications. The shape and size of the extrusion orifice of the die head directly determine the shape of the final particles. Traditional dies are mostly fixed structures, and the replacement process is cumbersome. When it is necessary to adjust the shape or size of the particles, the machine must be stopped to disassemble the die head and reinstall a suitable template, which is time-consuming, labor-intensive, and prone to production interruption. Overall, the production flexibility and efficiency are low. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a hot melt extrusion granulation device to solve the problems that the existing hot melt extrusion granulation equipment has a fixed die head structure, which makes the replacement process cumbersome and the overall production flexibility and efficiency low.

[0005] To achieve the above objectives, this utility model provides a hot melt extrusion granulation device, including an extrusion host, a feed cylinder disposed at the top of the extrusion host, a cooling water tank and a pelletizing host disposed sequentially at the rear of the extrusion host, and further comprising:

[0006] An extrusion die is located at the rear end of the extrusion host, and a fitting mounting groove is provided in the middle of the extrusion die.

[0007] A template adjustment frame is vertically set on the front side of the extrusion die head. Multiple replaceable discharge templates are arranged in parallel on the template adjustment frame. The shape or diameter of the extrusion hole in the middle of each discharge template is different. The discharge template and the fitting mounting groove are configured to cooperate with each other.

[0008] The template adjustment frame is connected to the extrusion die head through a lifting drive mechanism, and can move in the vertical direction to align the target output template and slide it into the fitting installation groove at the front end of the die head.

[0009] Furthermore, the lifting drive mechanism includes a vertical guide frame, the template adjustment frame is vertically slidably connected to the extrusion die head through the vertical guide frame, a lifting screw is vertically arranged in the middle of the vertical guide frame, a lifting sleeve is nested on the outside of the lifting screw, the lifting sleeve is connected to the template adjustment frame, and an adjustment motor is connected to the shaft end of the lifting screw.

[0010] Furthermore, horizontal sliding sleeves are symmetrically arranged on the left and right sides of the discharge template, and a horizontal guide rod is nested in the middle of the horizontal sliding sleeve. The horizontal guide rod is fixedly connected to the template adjustment frame. The discharge template is horizontally slidably connected to the template adjustment frame through the horizontal sliding sleeves and the horizontal guide rod. A fitting sealing ring is arranged around the middle of the rear end face of the discharge template, and a fitting sealing groove is arranged around the middle of the inner end face of the fitting mounting groove. The fitting sealing rings are mutually fitted and arranged. The discharge template slides back and forth to allow the fitting sealing rings to fit and separate and open.

[0011] Furthermore, a locking ramp is provided on the outer side of the horizontal sliding sleeve, and horizontal hydraulic rods are symmetrically connected to the left and right sides of the extrusion die. A top-pressing slider is connected to the telescopic end of the horizontal hydraulic rod near the extrusion die. A top-pressing ramp is provided in the middle of the top-pressing slider. The top-pressing ramp and the locking ramp are configured to cooperate with each other. The top-pressing slider pushes the horizontal sliding sleeve to slide towards the extrusion die through the top-pressing ramp and the locking ramp. A return spring is provided on the side of the horizontal sliding sleeve near the extrusion die.

[0012] Furthermore, an extrusion screw is horizontally rotatably mounted inside the extrusion host, and an extrusion motor is connected to the shaft end of the extrusion screw. Multiple heating sleeves are evenly arranged and nested along the horizontal direction on the outer side of the extrusion host.

[0013] Furthermore, traction rollers are horizontally symmetrically arranged on the upper and lower sides of the middle of the pelletizing host. A traction motor is connected to the shaft end of the traction roller. A fixed cutting blade is arranged on the rear side of the traction roller. A rotating blade is arranged on the rear side of the fixed cutting blade. The rotating blade is rotatably connected to the pelletizing host. A cutting motor is connected to the shaft end of the rotating blade.

[0014] The beneficial effects of this utility model are as follows: As can be seen from the above description, the hot melt extrusion granulation device provided by this utility model has multiple replaceable discharge templates arranged in parallel on the template adjustment frame on the front side of the extrusion die. The shape or diameter of the extrusion hole of each discharge template is different. The template adjustment frame is connected to the extrusion die through a lifting drive mechanism, which allows the template adjustment frame to move in the vertical direction. When it is necessary to replace the discharge template, the target discharge template can be aligned and slid into the fitting installation groove at the front end of the extrusion die by controlling the lifting drive mechanism. The discharge template can be replaced quickly according to the needs, reducing downtime and thus improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front structural diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the extrusion host according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the lifting drive mechanism according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the template adjustment frame according to an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the material discharge template according to an embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the pelletizing host according to an embodiment of the present invention.

[0023] The diagram is marked as follows:

[0024] 1. Feed cylinder; 2. Extrusion main unit; 201. Extrusion screw; 202. Extrusion motor; 203. Heating sleeve; 3. Extrusion die head; 301. Fitting mounting groove; 302. Fitting sealing groove; 4. Cooling water tank; 5. Pelletizer; 501. Traction roller; 502. Traction motor; 503. Cutting fixed blade; 504. Rotating blade; 505. Cutting motor; 6. Template adjustment frame; 601. Horizontal guide rod; 7. Lifting drive mechanism; 701. Vertical guide frame; 702. Lifting screw sleeve; 703. Lifting screw; 704. Adjusting motor; 8. Discharge template; 801. Extrusion hole; 802. Horizontal sliding sleeve; 803. Locking inclined surface; 804. Return spring; 805. Fitting sealing ring; 9. Horizontal hydraulic rod; 901. Top pressure slider; 902. Top pressure inclined surface. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a hot melt extrusion granulation device includes an extruder 2, a feed cylinder 1 is provided on the top of the extruder 2, and a cooling water tank 4 and a pelletizing unit 5 are sequentially provided on the rear side of the extruder 2. The device is characterized by further comprising:

[0028] The extrusion die 3 is located at the rear end of the extrusion host 2, and the middle of the extrusion die 3 is provided with a fitting mounting groove 301;

[0029] The template adjustment frame 6 is vertically set on the front side of the extrusion die head 3. Multiple replaceable discharge templates 8 are arranged in parallel on the template adjustment frame 6. The shape or diameter of the extrusion hole 801 set in the middle of each discharge template 8 is different. The discharge template 8 and the fitting mounting groove 301 are set to cooperate with each other.

[0030] The template adjustment frame 6 is connected to the extrusion die head 3 via the lifting drive mechanism 7, and can move in the vertical direction to align the target discharge template 8 and slide it into the fitting mounting groove 301 at the front end of the die head.

[0031] In this embodiment, the device mainly includes an extruder 2, a feed cylinder 1, a cooling water tank 4, a pelletizing machine 5, an extrusion die 3, a template adjusting frame 6, and a lifting drive mechanism 7. The feed cylinder 1 is located at the top of the extruder 2. The cooling water tank 4 and the pelletizing machine 5 are arranged sequentially at the rear of the extruder 2. The extrusion die 3 is installed at the rear end of the extruder 2. The extrusion die 3 has a fitting mounting groove 301 in the middle to facilitate quick replacement of different specifications of discharge templates 8 to adapt to different production needs. Multiple replaceable discharge templates 8 are arranged in parallel on the template adjusting frame 6, which is vertically installed at the front of the extrusion die 3. The shape or diameter of the extrusion hole 801 of each discharge template 8 is different. In this way, the appropriate discharge template 8 can be flexibly selected according to production needs. The template adjusting frame 6 is connected to the extrusion die 3 through the lifting drive mechanism 7, so that the template adjusting frame 6 can move in the vertical direction. When it is necessary to replace the discharge template 8, the operator only needs to control the lifting drive mechanism 7 to align the target discharge template 8 and slide it into the fitting and mounting groove 301 at the front end of the extrusion die head 3 to complete the replacement. The discharge template 8 can be replaced quickly as needed, reducing downtime and thus improving production efficiency. Due to the diversity and easy replacement of the discharge template 8, the device can quickly adapt to the production requirements of different materials and products, enhancing the flexibility of the production process.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, preferably, the device has vertical guide frames 701 on both sides of the extrusion die 3. The template adjustment frame 6 is vertically slidably connected to the extrusion die 3 through these guide frames, ensuring the stability and accuracy of the template adjustment frame 6 during movement. A lifting screw 703 is vertically installed in the middle of the vertical guide frame 701, and a lifting sleeve 702 is nested on the outside of the screw. The lifting sleeve 702 is connected to the template adjustment frame 6, so that when the lifting screw 703 rotates, the lifting sleeve 702 and the template adjustment frame 6 connected to it can move up and down in the vertical direction through the threaded transmission. One end of the lifting screw 703 is connected to an adjusting motor 704, which drives the lifting screw 703 to rotate. By controlling the forward and reverse rotation of the adjusting motor 704, the position of the template adjustment frame 6 can be precisely adjusted, thereby selecting and positioning the appropriate discharge template 8 to align with the fitting mounting groove 301 at the front end of the extrusion die 3, making the entire template replacement process simpler and faster.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, preferably, the device has horizontal sliding sleeves 802 symmetrically arranged on the left and right sides of the discharge template 8, and horizontal guide rods 601 are nested in the middle of these sliding sleeves. The horizontal guide rod 601 is fixedly connected to the template adjustment frame 6, enabling the discharge template 8 to slide horizontally with the template adjustment frame 6 via the horizontal sliding sleeve 802 and the horizontal guide rod 601. This ensures the precise horizontal movement of the discharge template 8. A fitting sealing ring 805 is arranged around the middle of the rear end face of the discharge template 8, while a corresponding fitting sealing groove 302 is arranged around the middle of the inner end face of the fitting mounting groove 301 of the extrusion die 3. When the discharge template 8 slides back and forth, the fitting sealing ring 805 will cooperate with the fitting sealing groove 302 to achieve fitting closure or separation opening. This not only ensures that the material will not leak during the extrusion process, but also improves the working stability and safety of the entire device. In actual operation, the target discharge template 8 is first adjusted to a suitable height by the lifting drive mechanism 7, and then the discharge template 8 is pushed to slide along the horizontal guide rod 601 so that the fitting sealing ring 805 is accurately embedded in the fitting sealing groove 302 to complete the closure. After production is completed, the discharge template 8 can be easily removed by reversing the operation, preparing for the next replacement. The design of the interlocking sealing ring 805 and the interlocking sealing groove 302 effectively prevents material leakage during the extrusion process, improving the safety and stability of equipment operation. By adopting the combination of horizontal sliding sleeve 802 and horizontal guide rod 601, the replacement process of discharge template 8 is greatly simplified, downtime is reduced, and work efficiency is improved. The easy disassembly and installation features allow operators to quickly replace discharge templates 8 of different specifications according to production needs, enhancing the adaptability and flexibility of the production line.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, preferably, the device has a locking ramp 803 on the outer side of the horizontal sliding sleeve 802, and horizontal hydraulic rods 9 are symmetrically installed on the left and right sides of the extrusion die 3. Each horizontal hydraulic rod 9 has a top-pressing slider 901 connected to its telescopic end near the extrusion die 3. The top-pressing slider 901 has a top-pressing ramp 902 in the middle. The top-pressing ramp 902 cooperates with the locking ramp 803. When the horizontal hydraulic rod 9 extends, the top-pressing slider 901 applies a pushing force to the locking ramp 803 through the top-pressing ramp 902. The top-pressing slider 901 interacts with the locking ramp 803 on the outer side of the horizontal sliding sleeve 802 through the top-pressing ramp 902, thereby pushing the horizontal sliding sleeve 802 to slide towards the extrusion die 3, ensuring that the discharge template 8 is accurately embedded in the fitting sealing groove 302 and remains stable. A return spring 804 is provided on the side of the horizontal sliding sleeve 802 near the extrusion die 3. When the discharge template 8 needs to be removed or replaced, the horizontal hydraulic rod 9 retracts, releasing the pressure of the top-pressing slider 901 on the horizontal sliding sleeve 802. At this time, the return spring 804 will automatically push the horizontal sliding sleeve 802 back to its original position, preparing for the next operation. Through the design of the top-pressing slider 901 and the locking inclined surface 803, the discharge template 8 can be effectively fixed in the designated position, preventing the position of the discharge template 8 from shifting due to vibration or other external forces, thus enhancing the stability of the entire system. The use of hydraulic drive combined with mechanical locking greatly simplifies the installation and disassembly process of the discharge template 8, reduces the need for manual intervention, and improves work efficiency. The reliable locking mechanism avoids potential safety risks caused by improper installation of the discharge template 8, such as material leakage, thus ensuring the safety of equipment and personnel.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, preferably, an extrusion screw 201 is horizontally rotatably mounted inside the extruder 2. The extrusion screw 201 is responsible for pushing the material from the feed cylinder 1 to the extrusion die 3. One end of the extrusion screw 201 is connected to an extrusion motor 202, which drives the extrusion screw 201 to rotate. Multiple heating sleeves 203 are evenly arranged and nested on the outer side of the extruder 2 in the horizontal direction. These heating sleeves 203 surround the extruder 2 and heat the passing material through them by electric heating, bringing it to a molten state to facilitate the subsequent extrusion molding process. The number and power of the heating sleeves 203 can be adjusted according to different materials and process requirements. One or more sets of traction rollers 501 are horizontally symmetrically arranged on the upper and lower sides of the middle of the pelletizing host 5. These traction rollers 501 are used to clamp and pull the material strips extruded and cooled by the extrusion die 3. The surface of the traction rollers 501 is made of flexible material with a certain deformation redundancy, which is convenient for pulling extruded strips of different sizes and shapes. Each set of traction rollers 501 is connected to a traction motor 502 at the shaft end, and the speed of the traction rollers 501 is controlled by the traction motor 502 to ensure that the material strips are pulled smoothly and continuously. A cutting blade 503 is provided on the rear side of the traction rollers 501, which provides a fixed reference surface for cutting. A rotating blade 504 is installed on the rear side of the cutting blade 503. The rotating blade 504 is rotatably connected to the pelletizing host 5, and a cutting motor 505 is connected to its shaft end. The cutting motor 505 drives the rotating blade 504 to rotate at high speed, which, together with the fixed cutting blade 503, achieves precise cutting of the material strip to form the required granular product.

[0036] The hot melt extrusion granulation device provided by this utility model has multiple replaceable discharge templates 8 arranged in parallel on the template adjustment frame 6 on the front side of the extrusion die 3. The shape or diameter of the extrusion hole 801 of each discharge template 8 is different. The template adjustment frame 6 is connected to the extrusion die 3 through a lifting drive mechanism 7, which allows the template adjustment frame 6 to move in the vertical direction. When it is necessary to replace the discharge template 8, the target discharge template 8 can be aligned and slid into the fitting and mounting groove 301 at the front end of the extrusion die 3 by controlling the lifting drive mechanism 7. The discharge template 8 can be replaced quickly according to the needs, reducing downtime and thus improving production efficiency.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above, which are not provided in the details for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hot melt extrusion granulation apparatus, comprising an extruder (2), wherein a feed cylinder (1) is provided at the top of the extruder (2), and a cooling water tank (4) and a pelletizing unit (5) are sequentially provided at the rear side of the extruder (2), characterized in that, Also includes: An extrusion die (3) is disposed at the rear end of the extrusion host (2), and a fitting mounting groove (301) is provided in the middle of the extrusion die (3); The template adjustment frame (6) is vertically set on the front side of the extrusion die (3). Multiple replaceable discharge templates (8) are arranged in parallel on the template adjustment frame (6). The shape or diameter of the extrusion hole (801) in the middle of each discharge template (8) is different from each other. The discharge template (8) and the fitting mounting groove (301) are mutually matched. The template adjustment frame (6) is connected to the extrusion die (3) via a lifting drive mechanism (7) and can move in the vertical direction to align the target discharge template (8) and slide it into the fitting mounting groove (301) at the front end of the die.

2. The hot melt extrusion granulation apparatus according to claim 1, characterized in that, The lifting drive mechanism (7) includes a vertical guide frame (701). The template adjustment frame (6) is vertically slidably connected to the extrusion die (3) through the vertical guide frame (701). A lifting screw (703) is vertically arranged in the middle of the vertical guide frame (701). A lifting sleeve (702) is nested on the outside of the lifting screw (703). The lifting sleeve (702) is connected to the template adjustment frame (6). An adjustment motor (704) is connected to the shaft end of the lifting screw (703).

3. The hot melt extrusion granulation apparatus according to claim 1, characterized in that, The discharge template (8) is symmetrically provided with horizontal sliding sleeves (802) on the left and right sides. A horizontal guide rod (601) is nested in the middle of the horizontal sliding sleeves (802). The horizontal guide rod (601) is fixedly connected to the template adjustment frame (6). The discharge template (8) is horizontally slidably connected to the template adjustment frame (6) through the horizontal sliding sleeves (802) and the horizontal guide rod (601). A fitting sealing ring (805) is provided around the middle of the rear end face of the discharge template (8). A fitting sealing groove (302) is provided around the middle of the inner end face of the fitting mounting groove (301). The fitting sealing rings (805) are mutually fitted together. The discharge template (8) slides back and forth to make the fitting sealing rings (805) fit together and separate.

4. The hot melt extrusion granulation apparatus according to claim 3, characterized in that, A locking ramp (803) is provided on the outer side of the horizontal sliding sleeve (802). Horizontal hydraulic rods (9) are symmetrically connected on the left and right sides of the extrusion die (3). A top-pressure slider (901) is connected to the telescopic end of the horizontal hydraulic rod (9) near the extrusion die (3). A top-pressure ramp (902) is provided in the middle of the top-pressure slider (901). The top-pressure ramp (902) and the locking ramp (803) are configured to cooperate with each other. The top-pressure slider (901) pushes the horizontal sliding sleeve (802) to slide towards the extrusion die (3) through the top-pressure ramp (902) and the locking ramp (803). A return spring (804) is provided on the side of the horizontal sliding sleeve (802) near the extrusion die (3).

5. The hot melt extrusion granulation apparatus according to claim 1, characterized in that, The extrusion host (2) is equipped with an extrusion screw (201) that rotates horizontally inside. An extrusion motor (202) is connected to the shaft end of the extrusion screw (201). Multiple heating sleeves (203) are evenly arranged and nested on the outside of the extrusion host (2) in the horizontal direction.

6. The hot melt extrusion granulation apparatus according to claim 1, characterized in that, The pelletizing host (5) has traction rollers (501) arranged horizontally and symmetrically on the upper and lower sides in the middle. The traction rollers (501) are connected to the shaft end of the traction rollers (501) and the traction motor (502) is connected to the shaft end. The traction rollers (501) have a fixed cutting blade (503) on the rear side and a rotating blade (504) on the rear side. The rotating blade (504) is rotatably connected to the pelletizing host (5) and the rotating blade (504) has a cutting motor (505) connected to the shaft end.

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