Melting device for PLA material processing

Abstract

The utility model relates to the field of melting devices, in particular to a melting device for PLA (polylactic acid) material processing, which comprises a machine body, a heating furnace arranged in the middle of the machine body, a cover body covering the upper part of the heating furnace, a first stirring motor mounted on the upper part of the cover body, a C-shaped stirring arm mounted on the upper part of the stirring rod, a connecting cylinder is mounted at the lower part through a bearing, and a plurality of scrapers are arranged on the connecting cylinder. In the utility model, the annular heating coil is used for heating the bottom and the side wall of the heating furnace, the heating area is relatively uniform, and the independent stirring mechanisms arranged at the top and the bottom of the heating furnace are matched for stirring, so that different stirring directions are formed at the top and the bottom of the heating furnace, and the stirring efficiency can be effectively improved; and excessive heating of the bottom material is prevented, the uniformity and fluidity of the material during melting are guaranteed, and the processing efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of melting devices, in particular to a melting device for processing PLA materials. Background Art

[0002] A melting machine is a device used to heat solid materials to a molten state and process them. It uses heat to heat the material above the melting point, turning it into a liquid state for subsequent processing operations. Melting machines are widely used in many industries, especially in the fields of material processing, plastic product manufacturing, and textile industry.

[0003] The processing of PLA materials requires the use of a melting device. In actual use, the heating area of ​​a traditional melting device is mostly concentrated at the bottom of the heating furnace, and some PLA material particles are of different sizes, which causes uneven heating of the PLA material, and further causes the PLA material to partially stick to the pot wall, or even thermal degradation, affecting the melting efficiency. At the same time, since the melting operation often requires a stirring rod to ensure the uniformity and fluidity of the melting, and traditional melting devices are mostly simple stirring blades, which affects the melting efficiency. Therefore, there is an urgent need for a melting device for processing PLA materials. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a melting device for processing PLA materials.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A melting device for processing PLA materials, comprising a machine body, a heating furnace is arranged in the middle of the machine body, a cover body is arranged on the upper part of the heating furnace, a first stirring motor is arranged on the upper part of the cover body, an output end of the first stirring motor is drivingly connected to a stirring rod, a C-shaped stirring arm is arranged on the upper part of the stirring rod, a connecting cylinder is arranged on the lower part through a bearing, and a plurality of scrapers are arranged on the connecting cylinder;

[0007] A second stirring motor is installed at the bottom of the machine body, and the output end of the second stirring motor is connected to the driving shaft. The driving shaft extends into the machine body and is drivingly connected to the rotating disk. A plurality of stirring blades are arranged on the upper part of the rotating disk, and a guide pin is arranged in the middle part.

[0008] In addition, a preferred structure is that one side of the cover body is connected to the connecting block, both sides of the connecting block are limitedly movably installed on the guide rod, the guide rod is installed on the machine body, and a cylinder is provided on one side of the machine body, and the telescopic end of the cylinder is connected to the connecting block.

[0009] In addition, a preferred structure is that an annular heating coil is disposed inside the machine body, and one side of the annular heating coil is connected to the heating furnace.

[0010] In addition, a preferred structure is that a plurality of torsion spring rotating seats are provided outside the connecting tube, and a scraper is rotatably mounted on the torsion spring rotating seat, one end of the scraper extends into the interior of the connecting tube and is connected to a connecting rod.

[0011] In addition, a preferred structure is that a plurality of notches are provided on the top of the guide pin, and the guide pin limiting sleeve is installed inside the connecting tube.

[0012] In addition, a preferred structure is that when the guide pin is sleeved with the connecting tube, the connecting rod in the connecting tube contacts the guide pin and is limitedly engaged in the groove formed by the guide pin, and the connecting rod drives the scraper to rotate.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, the bottom and side walls of the heating furnace are heated by the annular heating coil, and the heating area is made more uniform, and the independent stirring mechanisms arranged at the top and bottom of the heating furnace are used for stirring, so that different stirring directions are formed at the top and bottom of the heating furnace, which can effectively improve the stirring efficiency, prevent the bottom material from being overheated, ensure the uniformity and fluidity of the material when it is melted, and further improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external structure of a melting device for processing PLA materials proposed in the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a melting device for processing PLA materials proposed in the utility model;

[0017] Figure 3 This is a schematic diagram of the stirring shaft connection structure of a melting device for processing PLA materials proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the scraper structure of a melting device for processing PLA materials proposed in the utility model;

[0019] Figure 5 The utility model provides a schematic diagram of the expanded structure of a scraper of a melting device for processing PLA materials.

[0020] In the figure: 1 body, 2 guide rod, 3 first stirring motor, 31 stirring rod, 32 C-type stirring arm, 4 second stirring motor, 41 driving shaft, 5 discharge pipe, 6 connecting block, 7 cover, 8 cylinder, 9 heating furnace, 10 discharge port, 11 bearing, 12 rotating disk, 121 stirring blade, 13 guide pin, 14 torsion spring rotating seat, 15 scraper, 16 connecting rod, 17 connecting tube, 18 annular heating coil. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A melting device for processing PLA materials comprises a body 1, a heating furnace 9 is arranged in the middle of the body 1, a cover 7 is arranged on the upper part of the heating furnace 9, a first stirring motor 3 is arranged on the upper part of the cover 7, an output end of the first stirring motor 3 is drivingly connected with a stirring rod 31, a C-shaped stirring arm 32 is arranged on the upper part of the stirring rod 31, a connecting cylinder 17 is arranged on the lower part through a bearing 11, and a plurality of scrapers 15 are arranged on the connecting cylinder 17;

[0023] Furthermore, a second stirring motor 4 is installed at the bottom of the body 1, and the output end of the second stirring motor 4 is connected to the driving shaft 41. The driving shaft 41 extends into the interior of the body 1 and is drivingly connected to the rotating disk 12. A plurality of stirring blades 121 are arranged on the upper part of the rotating disk 12, and a guide pin 13 is arranged in the middle.

[0024] Furthermore, one side of the cover body 7 is connected to the connecting block 6, and both sides of the connecting block 6 are limitedly movably mounted on the guide rod 2, the guide rod 2 is mounted on the machine body 1, and a cylinder 8 is provided on one side of the machine body 1, and the telescopic end of the cylinder 8 is connected to the connecting block 6. The cover body 7 is quickly raised and lowered by the telescopic movement of the cylinder 8, so as to ensure the convenience of loading and unloading materials and improve the processing efficiency.

[0025] Furthermore, an annular heating coil 18 is provided inside the machine body 1, and one side of the annular heating coil 18 is connected to the heating furnace 9. The bottom and side walls of the heating furnace are heated by the annular heating coil 18, and the heating area is made more uniform.

[0026] Furthermore, a plurality of torsion spring rotating seats 14 are disposed outside the connecting tube 17 , and a scraper 15 is rotatably mounted on the torsion spring rotating seat 14 , one end of the scraper 15 extends into the connecting tube 17 and is connected to a connecting rod 16 .

[0027] Furthermore, a plurality of notches are formed on the top of the guide pin 13 , and the guide pin 13 is installed in a limited sleeve inside the connecting tube 17 .

[0028] Furthermore, when the guide pin 13 is sleeved with the connecting tube 17 , the connecting rod 16 in the connecting tube 17 contacts the guide pin 13 and is limitedly engaged in the notch of the guide pin 13 , and the connecting rod 16 drives the scraper 15 to rotate.

[0029] In this embodiment, the processed PLA material is placed in the heating furnace 9 in the machine body 1, and the annular heating coil 18 is controlled to heat the heating furnace 9. At the same time, the cylinder 8 is extended and retracted, so that the cover body 7 drives the stirring rod 31 downward and covers the heating furnace 9, and the first stirring motor 3 and the second stirring motor 4 are started to drive and stir.

[0030] In actual use, when the connecting tube 17 at the bottom of the stirring rod 31 is inserted into the guide pin 13, the notch on the guide pin 13 pushes the connecting rod 16 in the connecting tube 17 upward by means of a snap connection and restricts its movement. At the same time, the connecting rod 16 rotates and drives the scraper 15 to rotate in the opposite direction, that is, the scraper 15 is unfolded; the first stirring motor 3 drives the stirring rod 31 to rotate, and the C-shaped stirring arm 32 can drive the PLA material in the barrel to flow better than the traditional stirring blade, thereby improving the stirring efficiency. At the same time, the second stirring motor 4 at the bottom drives the rotating disk 12 to rotate, and the stirring blade 121 on the rotating disk 12 stirs the material at the bottom. At the same time, due to the setting of the bearing 11 on the stirring rod 31, the rotating disk 12 can drive the scraper 15 to rotate through the connecting tube 17. In the process of gradual melting of the PLA material, different stirring directions are formed in the top and bottom cavities of the heating furnace 9, so that the uniformity of the material can be further improved and the quality of the finished product can be improved. At the same time, the scraper 15 can effectively avoid the accumulation of the bottom material.

[0031] It is worth noting that the first stirring motor 3 and the second stirring motor 4 rotate in opposite directions.

[0032] In the utility model, the bottom and side walls of the heating furnace are heated by the annular heating coil 18, and the heating area is made more uniform, and the independent stirring mechanisms arranged at the top and bottom of the heating furnace are used for stirring, so that different stirring directions are formed at the top and bottom of the heating furnace, which can effectively improve the stirring efficiency, prevent the bottom material from being overheated, ensure the uniformity and fluidity of the material when it is melted, and further improve the processing efficiency.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A melting device for processing PLA materials, comprising a body (1), characterized in that: A heating furnace (9) is arranged in the middle of the machine body (1), the upper part of the heating furnace (9) is covered with a cover body (7), a first stirring motor (3) is installed on the upper part of the cover body (7), the output end of the first stirring motor (3) is drivingly connected to a stirring rod (31), a C-shaped stirring arm (32) is installed on the upper part of the stirring rod (31), a connecting cylinder (17) is installed on the lower part through a bearing (11), and a plurality of scrapers (15) are arranged on the connecting cylinder (17); A second stirring motor (4) is installed at the bottom of the machine body (1), and the output end of the second stirring motor (4) is connected to a driving shaft (41). The driving shaft (41) extends into the interior of the machine body (1) and is drivingly connected to a rotating disk (12). A plurality of stirring blades (121) are arranged on the upper part of the rotating disk (12), and a guide pin (13) is arranged in the middle part.

2. A melting device for processing PLA materials according to claim 1, characterized in that: One side of the cover body (7) is connected to the connecting block (6), and both sides of the connecting block (6) are mounted on the guide rod (2) in a limited and movable manner. The guide rod (2) is mounted on the machine body (1), and a cylinder (8) is provided on one side of the machine body (1), and the telescopic end of the cylinder (8) is connected to the connecting block (6).

3. A melting device for processing PLA materials according to claim 1, characterized in that: An annular heating coil (18) is arranged inside the machine body (1), and one side of the annular heating coil (18) is connected to the heating furnace (9).

4. A melting device for processing PLA materials according to claim 1, characterized in that: A plurality of torsion spring rotating seats (14) are arranged outside the connecting tube (17), and a scraper (15) is rotatably mounted on the torsion spring rotating seat (14). One end of the scraper (15) extends into the interior of the connecting tube (17) and is connected to a connecting rod (16).

5. A melting device for processing PLA materials according to claim 1, characterized in that: A plurality of notches are provided on the top of the guide pin (13), and the guide pin (13) is installed in a limited sleeve manner inside the connecting tube (17).

6. A melting device for processing PLA materials according to claim 5, characterized in that: When the guide pin (13) is sleeved with the connecting tube (17), the connecting rod (16) in the connecting tube (17) contacts the guide pin (13) and is limitedly engaged in the slot provided in the guide pin (13), and the connecting rod (16) drives the scraper (15) to rotate.

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