Temperature control cooling device for PLA modified particle production

Abstract

The utility model particularly relates to the field of PLA (polylactic acid) modified particle production equipment, and discloses a temperature control cooling device for PLA modified particle production, which comprises a workbench and a water tank, a mounting seat is fixedly arranged at the top end of the workbench, a shaper is fixedly arranged at the end part of the mounting seat, a plurality of discharge holes are symmetrically formed in the side wall of the shaper, and the discharge holes are communicated with the water tank. A water flowing groove is fixedly formed in the side wall, close to the discharging hole, of the workbench, a water spraying pipe is inserted into the inner side wall, close to the lower portion of the shaping device, of the water flowing groove, and two limiting frames are installed in the water flowing groove. The limiting frame, the hole groove and the clamping blocks are arranged, the two sets of clamping blocks are made of stainless steel and are fixedly connected with the gutter channel to form an integrated structure in a U shape, the internal size of the clamping blocks is matched with the external size of the limiting frame, the installation stability of the limiting frame is improved, the hole groove penetrates through the limiting frame and corresponds to the discharging hole, and the clamping blocks are convenient to install. Preliminarily-shaped PLA products can be conveniently inserted in a penetrating mode, vertical bending of PLA is limited, therefore, PLA makes full contact with cold water, and the cooling forming quality is improved.

Description

Technical Field

[0001] The utility model belongs to the field of PLA modified particle production equipment, in particular to a temperature control cooling device for PLA modified particle production. Background Art

[0002] Polylactic acid (PLA) is a polyester, while lactic acid (LA) is a naturally occurring biomonomer. PLA is a thermoplastic and can be processed using common plastic processing techniques to make films, sheets, and fibers. PLA itself is transparent, but it can also be made into opaque materials, and fillers can be added to PLA to form modified particles. Due to the high strength of PLA modified particles, they can be made into very thin sheets. PLA modified particles are insoluble in water and have good water and oil resistance. During the production process of PLA modified particles, the PLA and filler are heated and melted, then extruded into long strips using a spiral conveyor rod. A temperature-controlled cooling device is then used to cool and shape the long strips of PLA modified mixture to facilitate cutting into pellets in the next step.

[0003] Existing temperature-controlled cooling devices for PLA modified particle production typically include a water tank, a water pump, a shaper, and a water trough. Starting the water pump pumps cold water from the water tank into the shaper for preliminary shaping. The preliminarily shaped product is then transported to the water trough for direct contact with the cold water, thereby achieving rapid cooling and shaping.

[0004] During use, the existing temperature-controlled cooling device for the production of modified PLA particles may cause the shaped long strips of PLA products to bend and deform when cooling inside the water flow trough, resulting in insufficient cooling contact, thereby affecting the quality of the PLA cooling and molding, and thus affecting the quality of the next step of pelletizing. Utility Model Content

[0005] The utility model provides a temperature-controlled cooling device for the production of modified PLA particles, aiming to solve the problem that, during the use of the existing temperature-controlled cooling device for the production of modified PLA particles, a shaped long strip of PLA product may bend and deform when being cooled in a water flow trough, resulting in insufficient cooling contact, thereby affecting the quality of the PLA cooling and molding, and thus affecting the quality of the next step of pelletizing.

[0006] The utility model is implemented as follows: a temperature-controlled cooling device for the production of PLA modified particles comprises a workbench and a water tank, a mounting seat is fixedly provided on the top of the workbench, a shaper is fixedly provided on the end of the mounting seat, a plurality of discharge holes are symmetrically provided on the side wall of the shaper, a water trough is fixedly provided on the side wall of the workbench near the discharge hole, a water spray pipe is plugged into the inner side wall of the water trough near the bottom of the shaper, two limiting frames are installed inside the water trough, two groups of blocks are fixedly provided on the inner side walls of the water trough near both ends of the limiting frame, the two groups of blocks are both U-shaped and adapted to the external dimensions of the limiting frame, and a plurality of holes are provided on the side walls of the limiting frame corresponding to the discharge holes.

[0007] Preferably, a motor is fixedly provided at the end of the mounting seat away from the former, and a screw push rod is fixedly provided at the output end of the motor through the side wall of the mounting seat. A feed hopper is inserted at the top of the mounting seat and is connected to the interior of the mounting seat, thereby improving the efficiency of PLA transportation.

[0008] Preferably, a water pump 1 is fixedly provided at the top of the water tank, and both ends of the water pump 1 are connected to the shaper and the water tank in sequence through pipes. A spiral water trough is provided inside the water tank, and the spiral water trough is evenly wound around the discharge hole. One end of the spiral water trough is connected to the water outlet of the water pump 1 through a pipe, and the other end of the spiral water trough is connected to the water tank through a pipe, so as to facilitate the preliminary shaping of PLA.

[0009] Preferably, water pump 2 is fixedly installed on the surface of the water tank near water pump 1. The two ends of water pump 2 are connected to the water tank and the water spray pipe through pipes in sequence. A number of water outlet holes are opened at equal intervals on the side wall of the water spray pipe to improve the uniformity of cold water discharge.

[0010] Preferably, a water pump three is fixedly installed on the surface of the water tank near the water pump two, a connecting pipe is inserted into the bottom end of the water flow trough, and both ends of the water pump three are connected to the water tank and the connecting pipe in turn through pipes to facilitate cold water circulation.

[0011] Preferably, several of the holes are internally clamped with protective sleeves, and the protective sleeves are made of rubber and are annular, thereby improving the stability of the PLA penetrating the holes.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] First, by setting a limit frame, hole slots and clamping blocks, both sets of clamping blocks are made of stainless steel and are U-shaped and fixedly connected to the water flow channel to form an integrated structure. The internal dimensions of the clamping blocks are adapted to the external dimensions of the limit frame, which improves the stability of the limit frame installation. The hole slots pass through the limit frame and correspond to the discharge holes, which facilitates the insertion of preliminarily shaped PLA products and limits the vertical bending of the PLA, thereby allowing the PLA to fully contact with cold water and improving the quality of cooling and molding. Secondly, by setting a protective cover made of rubber material with elasticity and a smooth surface, the friction resistance to the PLA can be reduced, thereby improving the stability of the PLA passing through the hole slots. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 For the utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of the mounting base of the present invention.

[0017] Figure 4 This is a schematic diagram of the front cross-sectional structure of the water trough of the present invention.

[0018] The accompanying drawings are marked as follows: 1. Workbench; 2. Mounting base; 3. Shaper; 4. Water tank; 5. Water pump 1; 6. Water pump 2; 7. Water pump 3; 8. Water trough; 9. Connecting pipe; 10. Limiting frame; 11. Water spray pipe; 12. Discharge hole; 13. Hole slot; 14. Block; 15. Motor; 16. Screw push rod; 17. Feed hopper; 18. Spiral water trough; 19. Protective cover. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] See also Figure 1-4The embodiment provided by the present invention is a temperature-controlled cooling device for the production of PLA modified particles, comprising a workbench 1 and a water tank 4, the water tank 4 being used to store and prepare cold water, a mounting base 2 being fixed on the top of the workbench 1, a shaper 3 being fixed on the end of the mounting base 2, a plurality of discharge holes 12 being symmetrically opened on the side wall of the shaper 3 and being connected to the interior of the mounting base 2 for PLA shaping, a motor 15 being fixed on the end of the mounting base 2 away from the shaper 3, a screw push rod 16 being fixed on the output end of the motor 15 penetrating the side wall of the mounting base 2, a feed hopper 17 being plugged into the top of the mounting base 2 and being connected to the interior of the mounting base 2, for convenient addition of molten PLA for mixing The starting motor 15 can drive the spiral push rod 16 to rotate, thereby transporting the mixed material to the internal shaping of the discharge hole 12. A water flow trough 8 is fixedly provided on the side wall of the workbench 1 near the discharge hole 12 by bolts. The spiral water trough 18 is inclined to supply cold water to flow naturally. A water spray pipe 11 is inserted on the inner wall of the water flow trough 8 just below the shaper 3. A water pump 5 is fixedly provided on the top of the water tank 4 by bolts. The two ends of the water pump 5 are connected with the shaper 3 and the water tank 4 in turn through pipes. A spiral water trough 18 is opened inside the water tank 4. The spiral water trough 18 is evenly wound around the discharge hole 12. One end of the spiral water trough 18 is connected to the water outlet of the water pump 5 through a pipe. The other end of the spiral water trough 18 is connected with the water tank 4 through a pipe to facilitate water circulation. Starting the water pump 15 can output cold water to the inside of the spiral water trough 18 to cool the shaping device 3, which is convenient for the PLA to be initially shaped inside the discharge hole 12. The surface of the water tank 4 near the water pump 15 is fixed with a water pump 26. The two ends of the water pump 26 are connected with the water tank 4 and the water spray pipe 11 through pipes in turn. A number of water outlet holes are opened at equal intervals on the side wall of the water spray pipe 11, which improves the uniformity of the flow of cold water in the water trough 8. Two limit frames 10 are installed inside the water trough 8. The limit frame 10 is made of plastic and is long and strip-shaped. The water trough 8 is close to the limit frame 10 on both sides. Two groups of blocks 14 are fixed on the inner side wall of each end. Both groups of blocks 14 are made of stainless steel and are U-shaped and fixedly connected to the water flow channel 8 to form an integrated structure. Both groups of blocks 14 are adapted to the external dimensions of the limit frame 10, thereby improving the stability of the limit frame 10 being clamped inside the block 14. Several holes 13 are opened on the side wall of the limit frame 10 and correspond to the discharge hole 12. The hole grooves 13 pass through the limit frame 10 and correspond to the discharge hole 12, which is convenient for inserting the preliminarily shaped PLA products, so that the limit frame 10 limits the lateral displacement of the PLA, so that the PLA is fully in contact with the cold water, and the quality and efficiency of the PLA cooling molding are improved.

[0022] Water pump three 7 is fixed on the surface of water tank 4 near water pump two 6, and a connecting pipe 9 is connected to the bottom end of the water trough 8. The two ends of water pump three 7 are connected to the water tank 4 and the connecting pipe 9 in turn through pipes, which facilitates the cold water circulation inside the water trough 8.

[0023] A plurality of holes 13 are each clamped with a protective sleeve 19 . The protective sleeve 19 is made of rubber and is annular, thereby improving the stability of the PLA penetrating the holes 13 .

[0024] Working principle: When using this temperature-controlled cooling device for the production of PLA modified particles, the operator first connects an external power supply, pours the heated and molten PLA mixture from the feed hopper 17 into the inside of the mounting base 2, starts the motor 15 to drive the spiral push rod 16 to rotate, thereby transporting the heated and molten PLA to the inside of the discharge hole 12 for shaping, and starts the water pump 5 to pump the cold water inside the water tank 4 to the inside of the spiral water trough 18 to cool the shaper 3, thereby performing preliminary cooling and shaping on the PLA inside the discharge hole 12. When the PLA is transported to the inside of the water flow trough 8, it is in direct contact with the cold water, which facilitates accelerated cooling and shaping. The PLA is passed through the corresponding hole grooves 13 in turn, and the limit frame 10 can limit the lateral displacement of the PLA, so that the PLA is fully in contact with the cold water, thereby improving the quality and efficiency of the PLA cooling and molding, and then the cooled and molded PLA is cut into particles using a cutting device.

[0025] Secondly, the protective cover 19 is made of rubber and has elasticity. The surface of the protective cover 19 is smooth. When the protective cover 19 contacts the PLA, the friction resistance can be reduced, thereby improving the stability of the PLA through-hole groove 13.

[0026] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0027] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0028] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A temperature control cooling device for the production of PLA modified particles, characterized in that: The invention comprises a workbench (1) and a water tank (4): a mounting seat (2) is fixedly provided on the top of the workbench (1), a shaper (3) is fixedly provided on the end of the mounting seat (2), a plurality of discharge holes (12) are symmetrically provided on the side wall of the shaper (3), a water trough (8) is fixedly provided on the side wall of the workbench (1) near the discharge holes (12), a water spray pipe (11) is plugged into the inner side wall of the water trough (8) near the bottom of the shaper (3), two limit racks (10) are installed inside the water trough (8), two groups of card blocks (14) are fixedly provided on the inner side walls of the water trough (8) near the two ends of the limit rack (10), the two groups of card blocks (14) are both U-shaped and adapted to the external dimensions of the limit rack (10), and a plurality of hole slots (13) are provided on the side wall of the limit rack (10) and correspond to the discharge holes (12).

2. The temperature control cooling device for producing PLA modified particles according to claim 1, characterized in that: A motor (15) is fixedly provided at the end of the mounting seat (2) away from the shaper (3); an output end of the motor (15) passes through the side wall of the mounting seat (2) and is fixedly provided with a screw push rod (16); a feed hopper (17) is inserted at the top end of the mounting seat (2) and is in communication with the interior of the mounting seat (2).

3. The temperature control cooling device for producing PLA modified particles according to claim 1, characterized in that: A water pump (5) is fixedly provided at the top of the water tank (4), and both ends of the water pump (5) are connected to the shaper (3) and the water tank (4) in sequence through pipelines. A spiral water trough (18) is provided inside the water tank (4), and the spiral water trough (18) is evenly wound around the discharge hole (12). One end of the spiral water trough (18) is connected to the water outlet of the water pump (5) through a pipeline, and the other end of the spiral water trough (18) is connected to the water tank (4) through a pipeline.

4. The temperature control cooling device for producing PLA modified particles according to claim 3, characterized in that: A second water pump (6) is fixedly provided on the surface of the water tank (4) near the first water pump (5). Both ends of the second water pump (6) are connected to the water tank (4) and the water spray pipe (11) in sequence through pipes. A plurality of water outlet holes are opened on the side wall of the water spray pipe (11) at equal intervals.

5. The temperature control cooling device for producing PLA modified particles according to claim 1, characterized in that: A water pump 3 (7) is fixedly provided on the surface of the water tank (4) near the water pump 2 (6), a connecting pipe (9) is plugged into the bottom end of the water flow trough (8), and both ends of the water pump 3 (7) are connected to the water tank (4) and the connecting pipe (9) in sequence through pipelines.

6. The temperature control cooling device for producing PLA modified particles according to claim 1, characterized in that: A plurality of the hole grooves (13) are each clamped with a protective sleeve (19), and the protective sleeve (19) is made of rubber and is in a circular ring shape.

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