Hot air crystallization equipment for PLA (polylactic acid) heat-resistant suction pipe

Abstract

The utility model relates to the technical field of PLA (polylactic acid) crystallization, and discloses hot air crystallization equipment for a PLA heat-resistant suction pipe, which comprises a hot air heating cavity, an adjustable material barrel, a uniform heating body, a hot air circulating cavity and a cabinet body, the adjustable material barrel comprises a net barrel and a lifting net, and slideways are fixedly arranged on two sides of the inner wall of the net barrel; a first hole is formed in the middle of the inner bottom face of the net barrel, the lifting net is of a metal net structure, first grooves are formed in the two sides of the lifting net, and the lifting net is slidably arranged in the net barrel through sliding fit between the first grooves and sliding ways; a rotating disc net is fixedly arranged on the upper end face of the rotating disc body and is of a metal net structure, and a second hole is formed in the middle of the rotating disc net. According to the heating device, the PLA suction pipes can be heated more uniformly, different specifications of PLA suction pipes can be adjusted differently, and meanwhile the utilization rate of hot air circulation is increased.

Description

Technical Field

[0001] This utility model relates to the field of PLA crystallization technology, and in particular to a hot air crystallization device for a PLA heat-resistant suction tube. Background Technology

[0002] PLA heat-resistant straws are made from bio-based biodegradable materials. Ordinary PLA straws have limited heat resistance and are only suitable for cold or warm drinks; contact with high-temperature liquids will cause them to soften and deform. PLA straws treated with a high-crystallinity process have significantly improved heat resistance. This high-crystallinity process for PLA straws uses hot air crystallization equipment. By precisely controlling the temperature and airflow, the molecular chains are made more tightly packed, increasing the crystallinity of PLA and thus significantly improving the straw's heat resistance.

[0003] However, common hot air crystallization equipment only achieves a hot air controllability rate of 70% to 85%, resulting in uneven heating and a large number of defective products. In areas of localized overheating, the surface of the straw will over-crystallize, becoming brittle and prone to breakage, while in areas of insufficient heating, crystallization will be incomplete, and the heat resistance temperature will not meet the requirements. In addition, the hot air circulation cannot be fully utilized; the single vertical air supply mode results in insufficient hot air circulation efficiency, and the fixed equipment specifications cannot be adjusted for different sizes of PLA straws.

[0004] Therefore, this application provides a hot air crystallization device for PLA heat-resistant suction tubes to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hot air crystallization device for PLA heat-resistant straws. This device allows for more uniform heating of PLA straws, enables different adjustments for different specifications of PLA straws, and improves the hot air circulation utilization rate and air duct.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A hot air crystallization device for PLA heat-resistant straws includes a hot air heating chamber, an adjustable material barrel, a uniform heating body, a hot air circulation chamber, and a cabinet body. The adjustable material barrel includes a mesh barrel and a lifting mesh. Slide tracks are fixedly provided on both sides of the inner wall of the mesh barrel. A hole No. 1 is opened in the middle of the bottom surface of the mesh barrel. The lifting mesh is a metal mesh structure with a groove No. 1 on both sides. The lifting mesh is slidably disposed inside the mesh barrel through the groove No. 1 and the slide track.

[0008] The uniform heating body includes an electric lifting rod, a turntable body, a partition plate, and a motor. A turntable mesh is fixedly installed on the upper surface of the turntable body. The turntable mesh is a metal mesh structure with a second hole in its center. A bevel gear disk is fixedly installed on the lower surface of the turntable body. The front and rear ends and both sides of the outer wall of the turntable body are provided with third grooves. Ball bearings are rolled inside each of the four third grooves. A second groove is provided in the center of the upper surface of the partition plate. A small bevel gear is fixedly connected to the output end of the motor.

[0009] Furthermore, the cabinet body includes a heating chamber cabinet, and a crystallization cabinet is fixedly installed on the lower end face of the heating chamber cabinet.

[0010] Furthermore, the hot air heating chamber is installed inside the heating chamber cabinet. The hot air heating chamber includes a protective net, which is fixedly installed on the upper end face of the heating chamber cabinet. A heating tube is fixedly installed inside the heating chamber cabinet near the upper end face, and a fan is fixedly installed inside the heating chamber cabinet at the lower end of the heating tube.

[0011] Furthermore, the mesh barrel is a cylindrical metal mesh structure, which is movably mounted on the upper surface of the turntable mesh.

[0012] Furthermore, the turntable body is rotatably mounted inside the fourth groove through the rolling engagement of the ball bearings with the second groove, and the motor is fixedly mounted at the corner on the other side of the rear end of the lower end face of the partition.

[0013] Furthermore, the bevel gear disk engages with the smaller bevel gear.

[0014] Furthermore, the hot air circulation chamber includes an air outlet and a circulation net. Blowers are fixedly installed on both sides of the inner bottom surface of the inner wall of the crystallization cabinet. The air outlet is opened on both sides of the rear end face of the outer wall of the crystallization cabinet. The circulation net is a metal mesh structure and is fixedly installed on both sides of the inner top surface of the inner wall of the crystallization cabinet. The blowers blow hot air upwards through the circulation net into the interior of the crystallization cabinet.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model proposes a hot air crystallization device for PLA heat-resistant straws. The PLA straws to be processed are placed inside a mesh barrel on the upper part of a lifting mesh, and the mesh barrel is then placed on the upper part of a turntable above the turntable body. According to the PLA straw specifications, the height of the electric lifting rod is adjusted via a microcontroller to raise the PLA straw to a height for optimal heating. Simultaneously, the motor drives the turntable body to rotate, which in turn drives the mesh barrel to rotate, allowing for more uniform heating of the PLA straws inside the mesh barrel.

[0017] 2. The present invention proposes a hot air crystallization device for PLA heat-resistant straws. The blower blows hot air upwards through the circulation net into the interior of the crystallization cabinet, forming a horizontally distributed enveloping airflow, which makes the PLA straws heat more evenly and improves the hot air circulation utilization rate. Attached Figure Description

[0018] Figure 1 This is an overall isometric schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the back of this utility model;

[0020] Figure 3 This is an isometric schematic diagram of the hot air heating cavity of this utility model;

[0021] Figure 4 This is a bottom view of the adjustable feed cylinder of this utility model;

[0022] Figure 5 This is a schematic diagram of the explosion of the uniformly heated body of this utility model;

[0023] Figure 6 This is a schematic diagram of the hot air circulation chamber of this utility model;

[0024] Figure 7 This is a schematic diagram showing the placement of the mesh bucket and turntable body of this utility model.

[0025] Legend:

[0026] 1. Hot air heating chamber; 2. Adjustable material bucket; 3. Uniform heating body; 4. Hot air circulation chamber; 5. Cabinet body; 101. Protective net; 102. Heating tube; 103. Fan; 201. Net bucket; 202. Hole No. 1; 203. Slide rail; 204. Lifting net; 205. Groove No. 1; 301. Electric lifting rod; 302. Groove No. 4; 303. Turntable body; 304. Turntable net; 305. Hole No. 2; 306. Ball bearing; 307. Bevel gear disc; 308. Motor; 309. Groove No. 2; 310. Small bevel gear; 311. Partition plate; 312. Groove No. 3; 401. Blower; 402. Circulation net; 403. Air outlet; 501. Crystallization cabinet; 502. Heating chamber cabinet. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1 , Figure 3 One embodiment of this utility model is a hot air crystallization device for PLA heat-resistant suction tubes, comprising a hot air heating chamber 1, an adjustable material bucket 2, a uniform heating body 3, a hot air circulation chamber 4, and a cabinet body 5. The hot air heating chamber 1 is installed inside the heating chamber cabinet 502. The hot air heating chamber 1 includes a protective net 101, which is fixedly installed on the upper end face of the heating chamber cabinet 502. A heating pipe 102 is fixedly installed inside the heating chamber cabinet 502 near the upper end face. A fan 103 is fixedly installed inside the heating chamber cabinet 502 at the lower end of the heating pipe 102.

[0029] Specifically, the protective net 101 prevents operators from accidentally putting their hands into the equipment and causing burns, or prevents foreign objects from entering the equipment and causing damage. The fan 103 blows the heat generated by the heating tube 102 into the interior of the crystallization cabinet 501.

[0030] Reference Figure 4 , Figure 7 The adjustable material bucket 2 includes a mesh bucket 201 and a lifting net 204. The inner walls of the mesh bucket 201 are fixedly provided with slide rails 203 on both sides. A hole 202 is opened in the middle of the bottom surface of the mesh bucket 201. The lifting net 204 is a metal mesh structure with a groove 205 on both sides. The lifting net 204 is slidably disposed inside the mesh bucket 201 through the groove 205 and slide rails 203. The mesh bucket 201 is a cylindrical metal mesh structure and is movably disposed on the upper surface of the turntable mesh 304.

[0031] Specifically, the first groove 205 of the lifting net 204 slides in conjunction with the slide rail 203 of the net barrel 201, allowing the lifting net 204 to move only up and down under the drive of the electric lifting rod 301, while restricting the lifting net 204 from rotating together with the net barrel 201.

[0032] Reference Figure 5 The uniform heating body 3 includes an electric lifting rod 301, a turntable body 303, a partition plate 311, and a motor 308. A turntable mesh 304 is fixedly installed on the upper end surface of the turntable body 303. The turntable mesh 304 is a metal mesh structure with a second hole 305 in the middle. A bevel gear disk 307 is fixedly installed on the lower end surface of the turntable body 303. The front and rear ends and both sides of the outer wall of the turntable body 303 are provided with third grooves 312. Rolling balls 306 are rolled inside the four third grooves 312. A second groove 309 is opened in the middle of the upper end surface of the partition plate 311. A small bevel gear 310 is fixedly connected to the output end of the motor 308. The turntable body 303 is rotated inside the fourth groove 302 through the rolling cooperation of the rolling balls 306 and the second groove 309. The motor 308 is fixedly installed at the corner of the lower end surface of the partition plate 311 near the rear end. The bevel gear disk 307 is geared with the small bevel gear 310.

[0033] Specifically, the rolling engagement of the ball bearing 306 with the second groove 309 causes the turntable body 303 to rotate inside the fourth groove 302. The output end of the motor 308 drives the small bevel gear 310 to rotate the turntable body 303 together. The output end of the electric lifting rod 301 passes through the second hole 305 and the first hole 202 and rests on the middle of the lower end face of the lifting net 204.

[0034] Reference Figure 6 The hot air circulation chamber 4 includes an air outlet 403 and a circulation net 402. Blowers 401 are fixedly installed on both sides of the inner bottom surface of the inner wall of the crystallization cabinet 501. The air outlet 403 is opened on both sides of the rear end face of the outer wall of the crystallization cabinet 501. The circulation net 402 is a metal mesh structure and is fixedly installed on both sides of the inner top surface of the inner wall of the crystallization cabinet 501. The blowers 401 blow hot air upwards through the circulation net 402 into the interior of the crystallization cabinet 501.

[0035] Specifically, fan 103 blows hot air into the crystallization cabinet 501. The hot air passes through the lifting net 204, the inner bottom surface of the net barrel 201 and the turntable net 304, and finally reaches the inner bottom surface of the crystallization cabinet 501. Then, blower 401 blows the hot air upward through the circulation net 402 into the crystallization cabinet 501. The residual hot air is finally discharged from the air outlet 403.

[0036] Reference Figure 2 , Figure 6 The cabinet body 5 includes a heating chamber cabinet 502, and a crystallization cabinet 501 is fixedly installed on the lower end face of the heating chamber cabinet 502.

[0037] Specifically, hot air is sent into the crystallization cabinet 501 through the cooperation of the heating pipe 102 and the fan 103 inside the heating chamber cabinet 502, and the PLA suction pipe is processed in the mesh barrel 201 inside the crystallization cabinet 501.

[0038] Working principle: The operator first places the PLA straw into the upper surface of the lifting net 204 inside the net bin 201. Then, according to the specifications of the PLA straw, the operator controls the electric lifting rod 301 to the optimal heating height via the microcontroller. After adjusting the height, the output of the motor 308 drives the small bevel gear 310 to rotate the turntable body 303. At the same time, the heating tube 102 continues to heat the tube, and the fan 103 sends the heat generated by the heating tube 102 into the crystallization cabinet 501. The blower 401 blows the hot air upwards through the circulation net 402 into the crystallization cabinet 501, forming a horizontally distributed enveloping airflow, making the PLA straw heated more evenly. The residual hot air is finally discharged from the air outlet 403.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot air crystallization device for PLA heat-resistant suction tubes, comprising a hot air heating chamber (1), an adjustable material tank (2), a uniform heating body (3), a hot air circulation chamber (4), and a cabinet body (5), characterized in that: The adjustable material bucket (2) includes a mesh bucket (201) and a lifting net (204). The inner walls of the mesh bucket (201) are fixedly provided with slide rails (203) on both sides. A hole (202) is opened in the middle of the bottom surface of the mesh bucket (201). The lifting net (204) is a metal mesh structure with a groove (205) on both sides. The lifting net (204) is slidably disposed inside the mesh bucket (201) through the groove (205) and slide rails (203). The uniform heating body (3) includes an electric lifting rod (301), a turntable body (303), a partition (311), and a motor (308). A turntable mesh (304) is fixedly installed on the upper end face of the turntable body (303). The turntable mesh (304) is a metal mesh structure with a second hole (305) in the middle. A bevel gear disk (307) is fixedly installed on the lower end face of the turntable body (303). The front and rear ends and both sides of the outer wall of the turntable body (303) are provided with a third groove (312). Ball bearings (306) are rolled inside the four third grooves (312). A second groove (309) is provided in the middle of the upper end face of the partition (311). A small bevel gear (310) is fixedly connected to the output end of the motor (308).

2. The hot air crystallization equipment for a PLA heat-resistant suction tube according to claim 1, characterized in that: The cabinet body (5) includes a heating chamber cabinet (502), and a crystallization cabinet (501) is fixedly installed on the lower end face of the heating chamber cabinet (502).

3. The hot air crystallization equipment for a PLA heat-resistant suction tube according to claim 2, characterized in that: The hot air heating chamber (1) is installed inside the heating chamber cabinet (502). The hot air heating chamber (1) includes a protective net (101). The protective net (101) is fixedly installed on the upper surface of the heating chamber cabinet (502). A heating tube (102) is fixedly installed inside the heating chamber cabinet (502) near the upper surface. A fan (103) is fixedly installed inside the heating chamber cabinet (502) at the lower end of the heating tube (102).

4. The hot air crystallization equipment for a PLA heat-resistant suction tube according to claim 1, characterized in that: The mesh barrel (201) is a cylindrical metal mesh structure, which is movably set on the upper end face of the turntable mesh (304).

5. The hot air crystallization equipment for a PLA heat-resistant suction tube according to claim 1, characterized in that: The turntable body (303) is rotatably mounted inside the fourth groove (302) through the rolling cooperation of the ball bearing (306) and the second groove (309). The motor (308) is fixedly mounted at the corner of the lower end face of the partition plate (311) on the other side of the rear end.

6. The hot air crystallization equipment for a PLA heat-resistant suction tube according to claim 1, characterized in that: The bevel gear disk (307) is geared to the small bevel gear (310).

7. The hot air crystallization equipment for a PLA heat-resistant suction tube according to claim 2, characterized in that: The hot air circulation chamber (4) includes an air outlet (403) and a circulation net (402). Blowers (401) are fixedly installed on both sides of the inner bottom surface of the crystallization cabinet (501). The air outlet (403) is opened on both sides of the rear end face of the outer wall of the crystallization cabinet (501). The circulation net (402) is a metal mesh structure and is fixedly installed on both sides of the inner top surface of the crystallization cabinet (501). The blowers (401) blow hot air upwards through the circulation net (402) into the interior of the crystallization cabinet (501).

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