An explosion-proof fpc bag multi-layer co-extrusion film blowing equipment

Abstract

This utility model discloses a multi-layer co-extrusion blown film equipment for explosion-proof container bags, comprising: a blower, a main air duct connected to the middle of the top of the blower, and multiple secondary air ducts equidistantly distributed on the top of the blower; further comprising: a first motor installed on the outer wall of the top of the blower, the output shaft of the first motor having a first gear mounted thereon; a second motor installed on the outer wall of the top of the blower, the output shaft of the second motor having a second gear mounted thereon; and a transmission assembly rotatably mounted on the outer wall of the main air duct; and a ring installed on the top of the blower. This utility model's multi-layer co-extrusion blown film equipment for explosion-proof container bags solves the problem of uneven sidewall thickness during multi-layer composite film blowing by the coordinated work of multiple components. It can adjust the position and rotation of the air outlet components to ensure that the air is evenly blown onto the inner wall of the film bag, adapting to the volume changes of the film bag before and after blowing, avoiding the air outlet components puncturing the film bag, and effectively improving the blowing effect.

Description

Technical Field

[0001] This utility model relates to the field of blown film technology, specifically to a multi-layer co-extrusion blown film equipment for explosion-proof container bags. Background Technology

[0002] In the field of multi-layer co-extrusion blown film for explosion-proof FIBCs, traditional equipment production often results in uneven thickness of the multi-layer composite film during the blown film process, with sections thicker than others. Furthermore, in the initial stages of blown film production, when the film is not fully inflated and its internal volume is small, the air outlet components are prone to puncturing the film. Even after the film is inflated, the airflow is difficult to distribute evenly to the inner wall, leading to poor blown film quality and failing to meet the requirements of explosion-proof FIBCs for film quality. Utility Model Content

[0003] The purpose of this invention is to provide a multi-layer co-extrusion blown film equipment for explosion-proof container bags to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer co-extrusion blown film device for explosion-proof container bags, comprising: a blower, a main air duct connected to the middle part of the top of the blower, and multiple secondary air ducts equidistantly distributed on the top of the blower; further comprising: a first motor installed on the outer wall of the top of the blower, the output shaft of the first motor being equipped with a first gear, and a second motor installed on the outer wall of the top of the blower, the output shaft of the second motor being equipped with a second gear, and a transmission assembly rotatably installed on the outer wall of the main air duct; a ring installed on the top of the blower, and an external gear ring rotatably installed on the inner wall of the ring; and multiple equidistantly distributed moving components installed on the outer wall of the top of the blower, each of which is equipped with an air outlet component.

[0005] The transmission assembly includes a mounting ring, an internal gear ring mounted on the upper and lower ends of the outer wall of the mounting ring, and a drive bevel gear.

[0006] The moving assembly includes two fixed plates, a threaded rod rotatably connected to the two fixed plates, a guide rod disposed between the two fixed plates, a moving block screwed onto the threaded rod, and a driven bevel gear installed at one end of the threaded rod.

[0007] The air outlet assembly includes an L-shaped plate, a vertical pipe rotatably mounted on the L-shaped plate, multiple equidistant air outlet holes opened on the outer wall of the vertical pipe, and a driven toothed ring mounted on the outer wall of the vertical pipe.

[0008] The first gear meshes with the internal gear ring, and the driving bevel gear meshes with the driven bevel gear.

[0009] The driven toothed ring meshes with the outer toothed ring.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model discloses a multi-layer co-extrusion blown film equipment for explosion-proof container bags. Through the coordinated work of multiple components, it solves the problem of uneven sidewall thickness during multi-layer composite film blown film production. By adjusting the position and rotation of the air outlet component, it ensures that the air is evenly blown onto the inner wall of the film bag, adapting to the volume changes of the film bag before and after blowing, preventing the air outlet component from puncturing the film bag, and effectively improving the blown film effect. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the air outlet component of this utility model in its inward-moving state;

[0013] Figure 2 This is a structural diagram of the air outlet component of this utility model in its outward-moving state;

[0014] Figure 3 This is a structural diagram of the transmission component of this utility model;

[0015] Figure 4 This is a structural diagram of the moving component and the air outlet component of this utility model.

[0016] In the diagram: 1. Fan; 2. Main duct; 3. Secondary duct; 4. First motor; 5. First gear; 6. Second motor; 7. Second gear; 8. Transmission assembly; 801. Mounting ring; 802. Internal gear ring; 803. Driving bevel gear; 9. Circular ring; 10. External gear ring; 11. Moving assembly; 1101. Fixed plate; 1102. Guide rod; 1103. Threaded rod; 1104. Driven bevel gear; 1105. Moving block; 12. Air outlet assembly; 1201. L-shaped plate; 1202. Vertical pipe; 1203. Air outlet; 1204. Driven gear ring. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4This utility model provides a multi-layer co-extrusion blown film equipment for explosion-proof container bags, comprising: a blower 1, a main air duct 2 connected to the middle part of the top of the blower 1, and multiple secondary air ducts 3 connected to the top of the blower 1 at equal intervals; further comprising: a first motor 4 installed on the outer wall of the top of the blower 1, the output shaft of the first motor 4 being equipped with a first gear 5, and a second motor 6 installed on the outer wall of the top of the blower 1, the output shaft of the second motor 6 being equipped with a second gear 7, and a transmission assembly 8 rotatably installed on the outer wall of the main air duct 2; a ring 9 installed on the top of the blower 1, and an external gear ring 10 rotatably installed on the inner wall of the ring 9; and multiple moving assemblies 11 rotatably distributed on the outer wall of the top of the blower 1, each of which is equipped with an air outlet assembly 12.

[0019] It should be noted here that: the membrane bag is placed on top of the blower 1, and the air generated by the blower 1 is blown out from the main air duct 2 and the secondary air duct 3 to provide the basic airflow for the blown membrane;

[0020] When the membrane bag is blown up, the first motor 4 drives the first gear 5 to rotate, which drives the transmission component 8 to operate, thereby driving multiple moving components 11 to move synchronously, causing multiple air outlet components 12 to move and connect with the corresponding secondary air pipes 3, so that the air from the secondary air pipes 3 is blown out through the air outlet components 12.

[0021] At the same time, the second motor 6 drives the second gear 7 to rotate, which drives the outer gear ring 10 to rotate inside the ring 9, thereby driving the air outlet assembly 12 to rotate, so as to achieve uniform blowing of air onto the inner wall of the membrane bag.

[0022] During the initial blowing process, the air outlet component 12 is positioned close to avoid poking the incompletely inflated membrane bag (due to the small internal volume of the membrane bag); after the membrane bag is inflated, the air outlet component 12 spreads out through the moving component 11 to adapt to the increased volume of the membrane bag, further improving the uniformity of blowing and solving the problem of uneven thickness of the membrane bag sidewall.

[0023] In a preferred embodiment, the transmission assembly 8 includes a mounting ring 801, an internal gear ring 802 mounted on the upper and lower ends of the outer wall of the mounting ring 801, and a drive bevel gear 803.

[0024] It should be noted here that: the first motor 4 drives the first gear 5 to rotate. Since the first gear 5 meshes with the internal gear ring 802, the internal gear ring 802 rotates with the first gear 5, thereby driving the mounting ring 801 to rotate around the outer wall of the main air duct 2.

[0025] When the mounting ring 801 rotates, the active bevel gear 803 on its outer wall rotates synchronously, providing power to the moving component 11 and realizing the synchronous drive of multiple moving components 11.

[0026] In a preferred embodiment, the moving assembly 11 includes two fixed plates 1101, a threaded rod 1103 rotatably connected to the two fixed plates 1101, a guide rod 1102 disposed between the two fixed plates 1101, a moving block 1105 screwed to the threaded rod 1103, and a driven bevel gear 1104 mounted on one end of the threaded rod 1103.

[0027] It should be noted here that: the driving bevel gear 803 of the transmission assembly 8 rotates and meshes with the driven bevel gear 1104, driving the threaded rod 1103 to rotate between the two fixed plates 1101;

[0028] When the threaded rod 1103 rotates, the movable block 1105 screwed onto it moves along the guide rod 1102 to guide and limit its movement, thereby driving the air outlet assembly 12 installed on the movable block 1105 to move closer to or away from the center, adapting to the volume change of the membrane bag before and after it is blown up.

[0029] In a preferred embodiment, the air outlet assembly 12 includes an L-shaped plate 1201, a vertical pipe 1202 rotatably mounted on the L-shaped plate 1201, a plurality of equidistantly distributed air outlet holes 1203 opened on the outer wall of the vertical pipe 1202, and a driven toothed ring 1204 mounted on the outer wall of the vertical pipe 1202.

[0030] It should be noted here that: the L-shaped plate 1201 is connected to the moving block 1105 of the moving component 11, and moves synchronously with the moving block 1105, thereby driving the vertical tube 1202 to adjust its position;

[0031] The air from the secondary air duct 3 enters the vertical duct 1202 and is blown towards the inner wall of the membrane bag from multiple equidistant air outlets 1203.

[0032] When the outer toothed ring 10 rotates, it meshes with the driven toothed ring 1204, causing the vertical tube 1202 to rotate on the L-shaped plate 1201, so that the air blowing direction of the air outlet 1203 covers the inner wall of the film bag in all directions, improving uniformity.

[0033] In a preferred embodiment, the first gear 5 meshes with the internal gear ring 802, and the driving bevel gear 803 meshes with the driven bevel gear 1104.

[0034] It should be noted here that: the first gear 5 meshes with the internal gear ring 802, transmitting the rotational power of the first motor 4 to the transmission assembly 8, causing the transmission assembly 8 to rotate as a whole;

[0035] The active bevel gear 803 meshes with the driven bevel gear 1104, transmitting the rotational power of the transmission component 8 to the threaded rod 1103 of the moving component 11, driving the threaded rod 1103 to rotate, and ultimately realizing the position adjustment of the air outlet component 12.

[0036] In a preferred embodiment, the driven toothed ring 1204 meshes with the external toothed ring 10.

[0037] It should be noted here that the driven gear ring 1204 meshes with the outer gear ring 10. When the second motor 6 drives the outer gear ring 10 to rotate through the second gear 7, the power is transmitted to the vertical pipe 1202 through the driven gear ring 1204, causing the vertical pipe 1202 to rotate, thereby achieving uniform air blowing from the air outlet 1203 to the inner wall of the membrane bag.

[0038] Working principle:

[0039] Basic blowing stage: The membrane bag is placed on top of the blower 1. The air generated by the blower 1 is blown out from the main air duct 2 and the secondary air duct 3 to provide the initial airflow for the blown membrane and promote the initial expansion of the membrane bag.

[0040] Power transmission for adjusting the position of the air outlet assembly:

[0041] When the film bag is inflated, the first motor 4 starts, and its output shaft drives the first gear 5 to rotate.

[0042] Since the first gear 5 meshes with the inner gear ring 802 on the outer wall of the mounting ring 801 in the transmission assembly 8, the rotation of the first gear 5 drives the mounting ring 801 to rotate around the outer wall of the main air duct 2.

[0043] When the mounting ring 801 rotates, the active bevel gear 803 on its outer wall rotates synchronously. The active bevel gear 803 meshes with the driven bevel gear 1104 at one end of the threaded rod 1103 in the moving assembly 11, thereby driving the threaded rod 1103 to rotate between the two fixed plates 1101.

[0044] When the threaded rod 1103 rotates, the movable block 1105 screwed onto it moves along the guide rod 1102 between the two fixed plates 1101, thereby causing the air outlet assembly 12 mounted on the movable block 1105 to move closer to or away from the center.

[0045] During the initial blowing of the membrane, the air outlet assembly 12 is positioned close to the center to avoid poking the membrane bag that has not been fully inflated (due to the small internal volume of the membrane bag). After the membrane bag is inflated, the air outlet assembly 12 expands through the moving assembly 11 to accommodate the increased volume of the membrane bag. At the same time, multiple air outlet assemblies 12 are connected to the corresponding secondary air ducts 3, allowing the air from the secondary air ducts 3 to be blown out through the air outlet assembly 12.

[0046] The air outlet component rotates during the blowing stage:

[0047] The second motor 6 starts, and its output shaft drives the second gear 7 to rotate.

[0048] The second gear 7 drives the outer gear ring 10 on the inner wall of the top ring 9 of the fan 1 to rotate;

[0049] The outer toothed ring 10 meshes with the driven toothed ring 1204 on the outer wall of the vertical pipe 1202 in the air outlet assembly 12, thereby driving the vertical pipe 1202 to rotate on the L-shaped plate 1201.

[0050] When the vertical tube 1202 rotates, the multiple equidistant air outlets 1203 on its outer wall blow air evenly and comprehensively onto the inner wall of the membrane bag, improving the blowing effect and solving the problem of uneven thickness of the membrane bag side wall.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-layer co-extrusion blown film equipment for explosion-proof container bags, comprising: Fan (1), main air duct (2) connected to the middle part of the top of the fan (1), and multiple secondary air ducts (3) connected to the top of the fan (1) at equal intervals; The invention is characterized by further comprising: a first motor (4) installed on the top outer wall of the fan (1), the output shaft of the first motor (4) being equipped with a first gear (5), and a second motor (6) installed on the top outer wall of the fan (1), the output shaft of the second motor (6) being equipped with a second gear (7), and a transmission assembly (8) rotatably installed on the outer wall of the main air duct (2), a ring (9) installed on the top of the fan (1), and an external gear ring (10) rotatably installed on the inner wall of the ring (9), and a plurality of equally spaced moving assemblies (11) installed on the top outer wall of the fan (1), and an air outlet assembly (12) installed on each of the moving assemblies (11).

2. The explosion-proof container bag multilayer co-extrusion blown film equipment according to claim 1, characterized in that: The transmission assembly (8) includes a mounting ring (801), an internal gear ring (802) mounted on the upper and lower ends of the outer wall of the mounting ring (801), and a drive bevel gear (803).

3. The explosion-proof container bag multilayer co-extrusion blown film equipment according to claim 2, characterized in that: The moving assembly (11) includes two fixed plates (1101), a threaded rod (1103) rotatably connected to the two fixed plates (1101), a guide rod (1102) disposed between the two fixed plates (1101), a moving block (1105) screwed onto the threaded rod (1103), and a driven bevel gear (1104) installed at one end of the threaded rod (1103).

4. The explosion-proof container bag multilayer co-extrusion blown film equipment according to claim 1, characterized in that: The air outlet assembly (12) includes an L-shaped plate (1201), a vertical pipe (1202) rotatably mounted on the L-shaped plate (1201), a plurality of air outlet holes (1203) equidistantly distributed on the outer wall of the vertical pipe (1202), and a driven toothed ring (1204) mounted on the outer wall of the vertical pipe (1202).

5. The explosion-proof container bag multilayer co-extrusion blown film equipment according to claim 3, characterized in that: The first gear (5) meshes with the internal gear ring (802), and the driving bevel gear (803) meshes with the driven bevel gear (1104).

6. The explosion-proof container bag multilayer co-extrusion blown film equipment according to claim 4, characterized in that: The driven toothed ring (1204) meshes with the external toothed ring (10).

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