Polylactic acid film casting machine

Abstract

The utility model discloses a polylactic acid film casting machine which comprises a machine table, a base band, a heating box, a stock bin and a multi-adjusting scraper device. According to the utility model, a multi-adjusting scraper device is arranged at the front part of the stock bin, when the screw rod is rotated in the forward direction, the screw rod moves downwards along the inner side of the thread bushing, and then the tool apron is pushed to move downwards along the connecting groove, so that the distance between the scraper and the base band is reduced, slurry scraped and pressed by the scraper is thinner, the adjustability of the scraper is strong, and the use is more convenient; the quick assembly mechanism is arranged at the bottom of the scraper holder, the buckle groove is horizontally buckled to the outer portion of the buckle, so that the scraper and the scraper holder are preliminarily clamped, then the positioning pin is pressed downwards, the rebound device is triggered to contract downwards, the positioning pin penetrates through the through hole to be inserted into the inner side of the positioning hole downwards, and therefore the scraper and the scraper holder are completely clamped. The scraper is convenient and fast to operate, external tools are not needed, and the scraper is beneficial to improving the working efficiency.

Description

Technical Field

[0001] The utility model relates to the field of casting machines, in particular to a polylactic acid film casting machine. Background Art

[0002] Polylactic acid has good biocompatibility, environmental safety, non-toxicity, good mechanical properties and optical transparency, and good processing performance. Therefore, polylactic acid film has become one of the most popular research directions for institutions and enterprises such as chemical research and flexible packaging industry in recent years. The cast film machine is one of the production equipment of polylactic acid film, which has the advantages of low cost, high quality, non-toxicity and simple production process.

[0003] Existing patent application number: CN202321360508.3 A film casting machine with automatic correction function, including a film casting machine main body, a cleaning mechanism is arranged on the rear side of the top of the film casting machine main body, and the utility model adopts a fixed frame, a coolant tank, a semiconductor refrigerator, a liquid pump, a second electric telescopic rod, a movable frame, a fan and a cooling pipe, which can facilitate the cooling of the semi-finished film and the rapid cooling of the semi-finished film. By adopting an installation frame, a connecting bolt, a cleaning brush and a spring, the base belt of the film casting machine main body can be cleaned, and debris can be effectively prevented from remaining on the surface of the base belt.

[0004] The above patent records a casting machine, which is equipped with a scraper assembly for scraping and pressing the slurry onto a special base belt. The film thickness is controlled by the scraper assembly, but the scraper assembly is usually directly screwed onto the outlet of the silo. Whether it is replaced or adjusted in height, the screws need to be disassembled and installed. Due to the cumbersome operating steps, it is difficult to improve work efficiency. The functional structure of the scraper assembly can be improved to solve the above problem. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a polylactic acid film casting machine.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A polylactic acid film casting machine, comprising a machine table, a base belt, a heating box, a material bin and a multi-adjustable scraper device. A base belt is movably installed in a middle groove of the machine table, and the movement of the base belt is controlled by a built-in motor of the machine table. A heating box is installed in the front middle part of the top surface of the machine table, and a material bin is installed in the rear part of the top surface of the machine table. A multi-adjustable scraper device is arranged in the front part of the material bin. The multi-adjustable scraper device includes a connection groove, a tool holder, a screw rod, a threaded sleeve, a scraper, an auxiliary measuring mechanism and a quick assembly mechanism. A connection groove is opened in the middle and lower part of the front side of the material bin. A tool holder is longitudinally slidably installed inside the connection groove. The middle part of the top end of the tool holder is rotatably connected with a screw rod. A threaded sleeve is welded and arranged in the middle of the top end of the front side of the material bin. The screw rod longitudinally passes through the inside of the threaded sleeve and is threadedly connected with it. A scraper is installed at the bottom of the tool holder. An auxiliary measuring mechanism is arranged on the front side surface of the tool holder, and a quick assembly mechanism is arranged at the bottom of the tool holder. And the tool holder is connected and fixed with the scraper through the quick assembly mechanism.

[0007] Preferably, the length of the screw rod is not less than 5 cm.

[0008] Preferably, the auxiliary measuring mechanism includes a rotating sleeve and a measuring scale. A rotating sleeve is rotatably installed on the front side surface of the tool holder. The rotating sleeve is movably sleeved outside the measuring scale, and the measuring scale can slide along the inside of the rotating sleeve.

[0009] Preferably, the rotating sleeve is rotatably connected with the tool holder by a self-locking rotating shaft, and the rotating sleeve can be locked at a horizontal angle and a vertical angle through the self-locking rotating shaft.

[0010] Preferably, the quick assembly mechanism includes a fastener, a fastening groove, a positioning hole, a through hole, a rebounder and a positioning pin. Fasteners are welded and arranged at both the left and right ends of the bottom of the tool holder. The fasteners are in a T shape. Fastening grooves are symmetrically arranged at both the left and right ends of the top end of the scraper, and the fastening grooves can be horizontally fastened outside the fasteners. Positioning holes are symmetrically arranged at both the left and right ends of the top end of the scraper. Through holes are symmetrically distributed at both the left and right ends of the top surface of the tool holder and penetrate through to the bottom of the tool holder. A rebounder is installed on the side wall of the through hole. A positioning pin is slidably connected inside the through hole. The positioning pin is sleeved outside the rebounder through a middle notch, and the top telescopic end of the rebounder is screwed and fixed with the positioning pin. The positioning pin can be inserted downward into the inside of the positioning hole to completely clamp and fix the scraper and the tool holder.

[0011] Preferably, the maximum stroke of the positioning pin is not less than 2 cm.

[0012] The beneficial effects of the present utility model:

[0013] The utility model is provided with a multi-adjustable scraper device at the front part of the bin. When the screw rod rotates forward, the screw rod moves downward along the inner side of the threaded sleeve, and then pushes the tool holder to move downward along the connecting groove, so that the distance between the scraper and the base belt is reduced. The slurry after being scraped by the scraper will also be thinner. When the screw rod rotates reversely, the tool holder can be lifted, so that the distance between the scraper and the base belt is increased, and the slurry after being scraped by the scraper will be thicker. The scraper has strong adjustability and is more convenient to use.

[0014] The utility model is provided with an auxiliary measurement mechanism on the front side of the tool holder. By flipping the rotating sleeve downward, the measuring scale is in a vertical state, and then the bottom end of the measuring scale naturally abuts against the base belt. In this way, when adjusting the height of the scraper, the distance between the scraper and the base belt can be measured by the measuring scale, which helps the staff to position the height of the scraper more efficiently.

[0015] The utility model is provided with a quick assembly mechanism at the bottom of the tool holder. By horizontally buckling the buckle groove to the outside of the fastener, the scraper and the tool holder are initially clamped. Then, the positioning pin is pressed downward to trigger the rebound device to contract downward, so that the positioning pin passes through the through hole and is inserted downward into the positioning hole, thereby completely clamping the scraper and the tool holder, and the installation of the scraper and the tool holder can be completed. The operation is convenient and does not require external tools, which helps to improve work efficiency. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the utility model;

[0017] Figure 2 is a schematic structural diagram of the multi-adjustable scraper device in the utility model;

[0018] Figure 3 is the utility model Figure 2 schematic structural diagram after the tool holder is removed;

[0019] Figure 4 is a schematic structural diagram of the tool holder and the scraper in the utility model;

[0020] Figure 5 is a schematic structural diagram of the auxiliary measurement mechanism in the utility model;

[0021] Figure 6 is a front view sectional structural diagram of the positioning hole in the utility model.

[0022] Wherein: machine platform - 1, base belt - 2, heating box - 3, bin - 4, multi-adjustable scraper device - 5, connecting groove - 51, tool holder - 52, screw rod - 53, threaded sleeve - 54, scraper - 55, auxiliary measurement mechanism - 56, rotating sleeve - 561, measuring scale - 562, quick assembly mechanism - 57, fastener - 571, buckle groove - 572, positioning hole - 573, through hole - 574, rebound device - 575, positioning pin - 576. Detailed implementation mode

[0023] In order to further explain the technical solution of the present utility model, the following will be elaborated in detail through specific embodiments.

[0024] Please refer to Figure 1 , the present utility model provides a poly lactic acid film casting machine, which includes a machine table 1, a base belt 2, a heating box 3, a material bin 4 and a multi-adjustable scraper device 5. The base belt 2 is movably installed in the middle groove of the machine table 1, and the movement of the base belt 2 is controlled by the built-in motor of the machine table 1. A heating box 3 is installed in the front middle part of the top surface of the machine table 1, and a material bin 4 is installed in the rear part of the top surface of the machine table 1. A multi-adjustable scraper device 5 is arranged in the front part of the material bin 4.

[0025] Please refer to Figure 2-3 , in the multi-adjustable scraper device 5 of the present utility model, it includes a connection groove 51, a tool holder 52, a screw 53, a threaded sleeve 54, a scraper 55, an auxiliary measurement mechanism 56 and a quick assembly mechanism 57. A connection groove 51 is opened in the lower middle part of the front side of the material bin 4. A tool holder 52 is longitudinally slidably installed inside the connection groove 51. The middle part of the top end of the tool holder 52 is rotatably connected with a screw 53. A threaded sleeve 54 is welded and arranged in the middle part of the top end of the front side of the material bin 4. The screw 53 longitudinally passes through the inside of the threaded sleeve 54 and is threadedly connected with it. By rotating the screw 53, the tool holder 52 is controlled to rise and fall, so as to adjust the distance between the scraper 55 and the base belt 2. A scraper 55 is installed at the bottom of the tool holder 52. An auxiliary measurement mechanism 56 is arranged on the front side surface of the tool holder 52. A quick assembly mechanism 57 is arranged at the bottom of the tool holder 52. And the tool holder 52 is connected and fixed with the scraper 55 through the quick assembly mechanism 57.

[0026] Furthermore, the length of the screw 53 is not less than 5 cm to ensure that the scraper 55 has enough adjustable distance.

[0027] Please refer to Figure 4 and Figure 6 , in the auxiliary measurement mechanism 56 of the present utility model, it includes a rotating sleeve 561 and a measuring scale 562. The rotating sleeve 561 is rotatably installed on the front side surface of the tool holder 52. The rotating sleeve 561 is movably sleeved outside the measuring scale 562. The measuring scale 562 can slide along the inside of the rotating sleeve 561.

[0028] Furthermore, the rotating sleeve 561 is rotatably connected with the tool holder 52 by a self-locking rotating shaft. The rotating sleeve 561 can be locked at the horizontal angle and the vertical angle through the self-locking rotating shaft, so that the measuring scale 562 can be more conveniently lowered and retracted.

[0029] Please refer to Figure 5, in the present utility model, the quick assembly mechanism 57 includes a fastener 571, a buckle groove 572, a positioning hole 573, a through hole 574, a rebounder 575 and a positioning pin 576. Fasteners 571 are welded and provided at both the left and right ends of the bottom of the tool holder 52. The fastener 571 is in a T shape. Buckle grooves 572 are symmetrically arranged at both the left and right ends of the top end of the scraper 55. The buckle groove 572 can be horizontally buckled to the outside of the fastener 571 to initially fix the scraper 55 and the tool holder 52. Positioning holes 573 are symmetrically arranged at both the left and right ends of the top end of the scraper 55. The positioning hole 573 is closer to the center of the tool holder 52 than the buckle groove 572. Through holes 574 are symmetrically distributed at both the left and right ends of the top surface of the tool holder 52 and penetrate through to the bottom of the tool holder 52. A rebounder 575 is installed on the side wall of the through hole 574. A positioning pin 576 is slidably connected inside the through hole 574. The positioning pin 576 is sleeved outside the rebounder 575 through a central notch, and the top telescopic end of the rebounder 575 is fixed to the positioning pin 576 by screws. By means of the rebounder 575, the positioning pin 576 is controlled to perform a lifting action. The positioning pin 576 can be inserted downward into the inside of the positioning hole 573 to completely fix the scraper 55 and the tool holder 52.

[0030] Furthermore, the maximum stroke of the positioning pin 576 is not less than 2 cm to ensure that the positioning pin 576 and the positioning hole 573 have sufficient insertion length and are not easily loosened and detached.

[0031] The working principle is as follows:

[0032] First, when producing the polylactic acid film, first start the machine 1 to rotate the base belt 2, then add the slurry into the hopper 4. The slurry will flow from the hopper 4 onto the base belt 2 and then be scraped and coated to a certain thickness by the scraper 55. After that, as the base belt 2 moves, the slurry on its surface will enter the inside of the heating box 3 and be heated and cured. Finally, the cured slurry is peeled off from the surface of the base belt 2 to obtain a preliminarily formed film.

[0033] Second, by providing a multi-adjustable scraper device 5 at the front of the hopper 4, the height of the scraper 55 can be adjusted by rotating the screw 53. The specific operation method is as follows: when the screw 53 is rotated forward, the screw 53 moves downward along the inside of the threaded sleeve 54, and then pushes the tool holder 52 to move downward along the connecting groove 51, reducing the distance between the scraper 55 and the base belt 2. The slurry scraped by the scraper 55 will also be thinner. When the screw 53 is rotated in the reverse direction, the tool holder 52 can be raised, increasing the distance between the scraper 55 and the base belt 2. The slurry scraped by the scraper 55 will be thicker. The scraper 55 has strong adjustability and is more convenient to use.

[0034] Third, during the adjustment of the scraper 55, by setting an auxiliary measuring mechanism 56 on the front side of the blade holder 52, the rotating sleeve 561 can be flipped downward to make the ruler 562 in a vertical state, and then the bottom end of the ruler 562 can be naturally against the base belt 2. In this way, when adjusting the height of the scraper 55, the distance between the scraper 55 and the base belt 2 can be measured by the ruler 562, which helps the staff to locate the height of the scraper 55 more efficiently. After the adjustment is completed, the rotating sleeve 561 can be flipped to a horizontal state.

[0035] Fourth, when the scraper 55 needs to be replaced, it is only necessary to press the positioning pin 576 downward to trigger the rebounder 575 to rebound upward, so that the rebounder 575 drives the positioning pin 576 to retract upward to the inside of the through hole 574, so as to release the fixation of the knife holder 52 and the scraper 55, and then move the scraper 55 horizontally until its buckle groove 572 is disengaged from the outside of the fastener 571, and the scraper 55 can be removed from the bottom of the knife holder 52. When reinstalling, first horizontally buckle the buckle groove 572 to the outside of the fastener 571 to preliminarily fix the scraper 55 and the knife holder 52, and then press the positioning pin 576 downward to trigger the rebounder 575 to retract downward, so that the positioning pin 576 passes through the through hole 574 and is inserted downward into the inside of the positioning hole 573, thereby completely fixing the scraper 55 and the knife holder 52, and the installation of the scraper 55 and the knife holder 52 is completed. The operation is convenient and does not require the aid of external tools, which helps to improve work efficiency.

[0036] The utility model provides a polylactic acid film casting machine, by arranging a multi-adjustable scraper device 5 at the front part of a hopper 4, when the screw rod 53 is rotated forward, the screw rod 53 moves downward along the inner side of the threaded sleeve 54, and then pushes the knife seat 52 to move downward along the connecting groove 51, so that the distance between the scraper 55 and the base belt 2 is reduced, and the slurry after being scraped and pressed by the scraper 55 will be thinner, and the screw 53 is rotated in the reverse direction to raise the knife seat 52, so that the distance between the scraper 55 and the base belt 2 is increased, and the slurry after being scraped and pressed by the scraper 55 will be thicker, and the scraper 55 has strong adjustability and is more convenient to use, and an auxiliary measuring mechanism 56 is arranged on the front side of the knife seat 52, and the measuring ruler 562 is in a vertical state by turning the rotating sleeve 561 downward, and then the bottom of the measuring ruler 562 is The end naturally rests on the base belt 2, so that when adjusting the height of the scraper 55, the distance between the scraper 55 and the base belt 2 can be measured by the ruler 562, which helps the staff to more efficiently position the height of the scraper 55, and by setting a quick assembly mechanism 57 at the bottom of the knife seat 52, by horizontally buckling the buckle groove 572 to the outside of the fastener 571, the scraper 55 and the knife seat 52 are initially clamped, and then the positioning pin 576 is pressed downward to trigger the rebounder 575 to shrink downward, so that the positioning pin 576 passes through the through hole 574 and is inserted downward into the inner side of the positioning hole 573, thereby completely clamping the scraper 55 and the knife seat 52, and the installation of the scraper 55 and the knife seat 52 can be completed. The operation is convenient, no external tools are required, and it helps to improve work efficiency.

[0037] The above are only the preferred examples of the present utility model and are not used 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A polylactic acid film casting machine, comprising a machine table (1), a base belt (2), a heating box (3) and a material bin (4). The base belt (2) is movably installed in the middle groove of the machine table (1), and the movement of the base belt (2) is controlled by a built-in motor of the machine table (1). The heating box (3) is installed in the front middle part of the top surface of the machine table (1), and the material bin (4) is installed in the rear part of the top surface of the machine table (1). A multi-adjustable scraper device (5) is arranged in the front part of the material bin (4). It is characterized in that: It further includes a multi-adjustable scraper device (5). The multi-adjustable scraper device (5) includes a connection groove (51), a tool holder (52), a screw (53), a threaded sleeve (54), a scraper (55), an auxiliary measurement mechanism (56) and a quick assembly mechanism (57). A connection groove (51) is opened in the middle and lower part of the front side of the material bin (4). The tool holder (52) is longitudinally slidably installed inside the connection groove (51). The middle part of the top end of the tool holder (52) is rotatably connected to a screw (53). A threaded sleeve (54) is welded and arranged in the middle of the top end of the front side of the material bin (4). The screw (53) longitudinally passes through the inside of the threaded sleeve (54) and is threadedly connected thereto. A scraper (55) is installed at the bottom of the tool holder (52). An auxiliary measurement mechanism (56) is arranged on the front side surface of the tool holder (52). A quick assembly mechanism (57) is arranged at the bottom of the tool holder (52), and the tool holder (52) is connected and fixed to the scraper (55) through the quick assembly mechanism (57).

2. The cast film machine for polylactic acid according to claim 1, wherein: The length of the screw (53) is not less than 5 cm.

3. The cast film machine for polylactic acid according to claim 1, wherein: The auxiliary measurement mechanism (56) includes a rotating sleeve (561) and a measuring scale (562). The rotating sleeve (561) is rotatably installed on the front side surface of the tool holder (52). The rotating sleeve (561) is movably sleeved outside the measuring scale (562), and the measuring scale (562) can slide along the inside of the rotating sleeve (561).

4. The cast film machine for polylactic acid according to claim 3, wherein: The rotating sleeve (561) is rotatably connected to the tool holder (52) by a self-locking rotating shaft, and the rotating sleeve (561) can be locked at a horizontal angle and a vertical angle through the self-locking rotating shaft.

5. The cast film machine for polylactic acid according to claim 1, wherein: The quick assembly mechanism (57) includes a fastener (571), a fastening groove (572), a positioning hole (573), a through hole (574), a rebounder (575) and a positioning pin (576). Fasteners (571) are welded and provided at both the left and right ends of the bottom of the tool holder (52). The fastener (571) is T-shaped. Fastening grooves (572) are symmetrically provided at both the left and right ends of the top end of the scraper (55). The fastening groove (572) can be horizontally fastened to the outside of the fastener (571). Positioning holes (573) are symmetrically provided at both the left and right ends of the top end of the scraper (55). Through holes (574) are symmetrically distributed at both the left and right ends of the top surface of the tool holder (52), and the through holes (574) penetrate through to the bottom of the tool holder (52). A rebounder (575) is installed on the side wall of the through hole (574). A positioning pin (576) is slidably connected inside the through hole (574). The positioning pin (576) is sleeved outside the rebounder (575) through a central notch, and the top telescopic end of the rebounder (575) is screwed and fixed to the positioning pin (576). The positioning pin (576) can be inserted downward into the inside of the positioning hole (573) to completely clamp the scraper (55) and the tool holder (52).

6. The cast film machine for polylactic acid according to claim 5, wherein: The maximum stroke of the positioning pin (576) is not less than 2 cm.

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