Automatic screen changer for continuous production of PBAT cast film

Abstract

The utility model particularly relates to the technical field of cast film production, and discloses an automatic screen changer for continuous production of a PBAT cast film, which is characterized by comprising a first mounting seat, a first notch is arranged on the surface of the first mounting seat, two second mounting seats are inserted on the side wall of the first notch, and the second mounting seats are arranged on the first notch. Supporting frames are fixedly arranged on the two side walls, close to the second mounting base, of the first mounting base, a first air cylinder is fixedly arranged at one end of each supporting frame, and a second air cylinder is fixedly arranged at the other end of each supporting frame. By arranging the first mounting base, the first notches, the second mounting base, the second notches, the filtering assembly, the supporting frame, the first air cylinder and the second air cylinder, the filtering assembly comprises the shell clamped in the second notches, and the first air cylinder and the second air cylinder can be started to sequentially drive the two first notches to horizontally move; therefore, different shells and the first notch are kept in the same vertical direction, the shell replacement efficiency is improved, and continuous production of cast films is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cast film production, and in particular relates to an automatic screen changer for continuous production of PBAT cast film. Background Art

[0002] PBAT cast film is a non-stretched, non-directional flat extruded film produced by melt casting and quenching. It can be produced in two ways: single-layer cast film and multi-layer co-extrusion cast film. Compared to blown film, cast film boasts faster production speeds, higher output, and superior transparency, gloss, and thickness uniformity.

[0003] In the existing PBAT cast film production process, a filter is required to filter out impurities in the molten plastic fluid, thereby improving the quality of PBAT cast film production.

[0004] During the continuous production of existing PBAT cast film, impurities will accumulate in the filter screen, which needs to be replaced in a timely manner. Stopping the machine to replace the filter screen may cause the production of PBAT cast film to be interrupted, thereby affecting the efficiency of PBAT cast film production. Utility Model Content

[0005] The utility model provides an automatic screen changer for continuous production of PBAT cast film, which aims to solve the problem that during the existing continuous production of PBAT cast film, impurities accumulate in the filter screen, which needs to be replaced in time. Stopping the machine to replace the filter screen may cause the interruption of PBAT cast film production, thereby affecting the production efficiency of PBAT cast film.

[0006] The present utility model is implemented as follows: an automatic screen changer for continuous production of PBAT cast film, characterized in that it includes a mounting seat 1, a notch 1 is provided on the surface of the mounting seat 1, two mounting seats 2 are plugged into the side wall of the notch 1, support frames are fixedly provided on the two side walls of the mounting seat 1 close to the mounting seat 2, one end of the support frame is fixedly provided with a cylinder 1, and the other end of the support frame is fixedly provided with a cylinder 2, the output ends of the cylinder 1 and the cylinder 2 pass through the support frame in sequence and are fixed to the end of the mounting seat 2, three notches 2 are provided on the surfaces of the two mounting seats 2 at equal intervals, a filter assembly is provided inside each of the notches 2, and the filter assembly includes a shell that is snap-connected to the inside of the notch 2.

[0007] Preferably, two mounting ears are symmetrically fixed on the side wall of the mounting seat 1, and a plurality of threaded holes are opened on the surface of the two mounting ears, thereby improving the installation stability of the mounting seat 1.

[0008] Preferably, two slots three are symmetrically provided on the side wall of the mounting seat one close to the support frame for the mounting seat two to be plugged in. The slots three are both connected to the slot one, and the slots three pass through the side wall of the mounting seat two. The internal dimensions of the slots three are both adapted to the external dimensions of the mounting seat two, thereby improving the sealing of the connection between the mounting seat two and the mounting seat one.

[0009] Preferably, a through hole 2 is provided at the end of the support frame for plugging in the output end of the air cylinder 1, and a through hole 1 is provided at the other end of the support frame for plugging in the output end of the air cylinder 2. The through hole 1 and the through hole 2 are located in the same horizontal plane with the two slots 3 in sequence, thereby improving the convenience of installing and positioning the cylinder 1 and the cylinder 2.

[0010] Preferably, a groove is provided at the top of the shell, the inner size of the groove is matched with the inner size of the slot 1, and a screen is fixed at the inner bottom of the groove, thereby improving the stability of the screen installation.

[0011] Preferably, the screen and the shell are both made of stainless steel and fixedly connected to form an integrated structure. The mesh diameter of the screen is 1 mm, which improves the overall stability of the screen.

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

[0013] First, by providing mounting seat 1, slot 1, mounting seat 2, slot 2, filter assembly, support frame, cylinder 1 and cylinder 2, the filter assembly includes a shell that is clamped inside slot 2. Starting cylinder 1 and cylinder 2 can drive the two slots 1 to move horizontally in turn, so that different shells and slot 1 are kept in the same vertical direction, thereby improving the filtering efficiency of shell replacement and realizing continuous production of cast film; secondly, by providing a support frame, through hole 1 and through hole 2, the convenience of installation and positioning of cylinder 1 and cylinder 2 is improved. 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 This is a schematic diagram of the front three-dimensional structure of the mounting base of the present invention.

[0016] Figure 3 This is a schematic diagram of the installation structure of the filter component of the present invention.

[0017] The figures are marked as follows: 1. Mounting seat 1; 2. Slot 1; 3. Mounting seat 2; 4. Slot 2; 5. Filter assembly; 501. Housing; 502. Groove; 503. Screen; 6. Support frame; 7. Cylinder 1; 8. Cylinder 2; 9. Slot 3; 10. Through hole 1; 11. Through hole 2; 12. Mounting ear; 13. Threaded hole. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] See also Figure 1-3The embodiment of the present invention provides an automatic screen changer for continuous production of PBAT cast film, characterized in that it includes a mounting seat 1, a notch 2 is provided on the surface of the mounting seat 1, the notch 2 penetrates the mounting seat 1 for the flow of molten fluid, two mounting seats 2 3 are plugged into the side wall of the notch 2 for support and limitation, a support frame 6 is fixed on the two side walls of the mounting seat 1 near the mounting seat 2 3, and two notches 3 9 are symmetrically provided on the side wall of the mounting seat 1 near the support frame 6 for the mounting seat 2 3 to be plugged in, and the notches 3 9 are both connected to the notch 2 The slots 3 9 are all through the side wall of the mounting seat 2 3, and the internal dimensions of the slots 3 9 are adapted to the external dimensions of the mounting seat 2 3, which improves the sealing performance of the connection between the mounting seat 2 3 and the mounting seat 1. One end of the support frame 6 is fixed with a cylinder 7 by bolts, and the other end of the support frame 6 is fixed with a cylinder 2 8 by bolts. The output ends of the cylinder 1 7 and the cylinder 2 8 are sequentially passed through the support frame 6 and fixed to the end of the mounting seat 2 3. Three slots 2 4 are evenly spaced on the surface of the two mounting seats 2 3. The interior of the slots 2 4 is provided with a filter assembly 5. The filter assembly 5 The housing 501 includes a housing 501 that is snap-fitted into the interior of the slot 2 4. A groove 502 is provided at the top of the housing 501 for the molten fluid to flow. The internal dimensions of the groove 502 match the internal dimensions of the slot 2. The mounting seat 1 can limit the top of the housing 501, thereby improving the stability of the groove 502 when installed between the mounting seat 1 and the mounting seat 2 3. A screen 503 is fixedly provided at the inner bottom of the groove 502. The screen 503 and the housing 501 are both made of stainless steel and fixedly connected to form an integrated structure, thereby improving the stability of the installation of the screen 503. The mesh diameter of 503 is 1 mm. The molten fluid passes through the two screens 503 in sequence to achieve multi-stage filtration, thereby improving the quality of filtration. When the filter assembly 5 needs to be replaced, the operator starts the cylinder 1 7 and the cylinder 2 8 in sequence to drive the mounting base 2 3 to move horizontally, so that the shell 501 connected at different positions is opposite to the slot 1 2, so that the mounting base 1 is supported on the top of the shell 501, thereby realizing the rapid replacement of the screen 503, facilitating the rapid passage of the molten fluid through the replaced screen 503, realizing the continuous production of the cast film, and thus improving production efficiency.

[0021] Two mounting ears 12 are symmetrically fixed on the side wall of the mounting seat 1. The surfaces of the two mounting ears 12 are each provided with a plurality of threaded holes 13 for bolt connection, thereby improving the installation stability of the mounting seat 1.

[0022] A through hole 2 11 is provided at the end of the support frame 6 for plugging in the output end of the air cylinder 1 7, and a through hole 10 is provided at the other end of the support frame 6 for plugging in the output end of the air cylinder 2 8. The through hole 10 and the through hole 2 11 are located in the same horizontal plane as the two slots 3 9 in sequence, which improves the convenience of installation and positioning of the cylinder 1 7 and the cylinder 2 8.

[0023] Working principle: When using this automatic screen changer for continuous production of PBAT cast film, the operator first connects the external power supply, faces the slot 2 to the output end of the melt fluid extrusion equipment, and fixes the mounting ear 12 to the output end of the extrusion equipment by bolts. The extrusion equipment is a device used to heat molten plastic particles and output molten fluid. The extrusion equipment is a prior art and will not be described in detail here. The molten fluid enters the interior of the slot 2 and passes through the two screens 503 in turn, thereby achieving fine filtration of the molten fluid. When it is necessary to replace the filter components at different positions 5, the operator starts the cylinder 1 7 and the cylinder 2 8 in sequence to drive the mounting base 2 3 to move horizontally, so that the shell 501 connected at different positions is opposite to the slot 1 2, and the internal size of the groove 502 is adapted to the internal size of the slot 2, thereby improving the stability of the shell 501 installed inside the slot 2 4, thereby realizing the rapid replacement of the filter component 5, facilitating the continuous production of the cast film, and thus improving the production efficiency. The operator can remove the clogged filter component 5 and then connect the new shell 501 to the inside of the slot 2 4 for the next automatic replacement.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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. An automatic screen changer for continuous production of PBAT cast film, characterized in that: The invention comprises a mounting seat 1 (1): a notch 1 (2) is provided on the surface of the mounting seat 1 (1), two mounting seats 2 (3) are plugged into the side walls of the notch 1 (2), a support frame (6) is fixed on the two side walls of the mounting seat 1 (1) close to the mounting seat 2 (3), one end of the support frame (6) is fixed with a cylinder 1 (7), the other end of the support frame (6) is fixed with a cylinder 2 (8), the output ends of the cylinder 1 (7) and the cylinder 2 (8) pass through the support frame (6) in sequence and are fixed on the end of the mounting seat 2 (3), three notches 2 (4) are provided on the surfaces of the two mounting seats 2 (3) at equal intervals, a filter assembly (5) is provided inside the notch 2 (4), and the filter assembly (5) includes a shell (501) that is clamped inside the notch 2 (4).

2. The automatic screen changer for continuous production of PBAT cast film according to claim 1, characterized in that: Two mounting ears (12) are symmetrically fixed on the side wall of the mounting seat (1), and a plurality of threaded holes (13) are opened on the surface of the two mounting ears (12).

3. The automatic screen changer for continuous production of PBAT cast film according to claim 2, characterized in that: Two slots (9) are symmetrically provided on the side wall of the mounting seat one (1) close to the support frame (6) for the mounting seat two (3) to be plugged in. The slots (9) are both connected to the slot one (2). The slots (9) pass through the side wall of the mounting seat two (3). The internal dimensions of the slots (9) are both compatible with the external dimensions of the mounting seat two (3).

4. The automatic screen changer for continuous production of PBAT cast film according to claim 3, characterized in that: The end of the support frame (6) is provided with a second through hole (11) for plugging in the output end of the air cylinder (7), and the other end of the support frame (6) is provided with a first through hole (10) for plugging in the output end of the air cylinder (8), and the first through hole (10) and the second through hole (11) are located in the same horizontal plane as the two notches (9) in sequence.

5. The automatic screen changer for continuous production of PBAT cast film according to claim 1, characterized in that: The top of the shell (501) is provided with a groove (502), the inner size of the groove (502) is adapted to the inner size of the slot 1 (2), and a screen (503) is fixedly provided at the inner bottom of the groove (502).

6. The automatic screen changer for continuous production of PBAT cast film according to claim 5, characterized in that: The screen (503) and the housing (501) are both made of stainless steel and are fixedly connected to form an integrated structure. The mesh diameter of the screen (503) is 1 mm.

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