Diameter control mechanism for bubble forming

Abstract

The utility model belongs to the field of film bubble forming, and particularly relates to a diameter control mechanism for film bubble forming, which comprises a film blowing machine, a diameter adjusting mechanism is arranged at the top of the film blowing machine, the diameter adjusting mechanism comprises a first connecting rod, and the bottom of the first connecting rod is fixedly connected to the top of the film blowing machine. The top of the first connecting rod is fixedly connected with a hollow shell; according to the utility model, the plane threaded block is driven to rotate by rotating the turntable, then the plane threaded block drives the plurality of moving blocks to move synchronously, and the plurality of moving blocks are positioned on the outer side of a film bubble, so that when plastic particles are blown into the film bubble by a film blowing machine, the film bubble passes through the plurality of moving blocks, and the diameter of the film bubble is limited by the plurality of moving blocks; the diameter of the film bubble cannot become larger, the effect of adjusting the diameter of the film bubble is achieved, the diameter of the film bubble can be controlled through movement of the moving block, and the film bubble can meet the requirements of films with different width sizes when being produced and shaped by a film blowing machine.

Description

Technical Field

[0001] This utility model relates to the field of membrane bubble forming, specifically a diameter control mechanism for membrane bubble forming. Background Technology

[0002] The blown film machine melts plastic particles (such as PE, POF, PVC, etc.) into a fluid state through a heating system, and then blows them into a cylindrical film through screw extrusion and high-pressure air blowing. Finally, it is shaped into a flat plastic film by a cooling device.

[0003] In existing technology, blown film machines blow plastic particles into cylindrical film bubbles, which are then cooled, shaped, and rolled up. However, when plastic particles are blown into film bubbles, it is inconvenient to control and adjust the diameter of the film bubbles, which means that when the film bubbles are shaped into films, they cannot meet the requirements for producing films of different widths and sizes. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, when plastic particles are blown into film bubbles by a blown film machine, it is inconvenient to control and adjust the diameter of the film bubble, which leads to the problem that the film bubble cannot meet the production of films with different widths and sizes when it is shaped into a film. This utility model proposes a diameter control mechanism for film bubble forming.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a diameter control mechanism for film bubble forming, including a blown film machine, wherein a diameter adjustment mechanism is provided on the top of the blown film machine.

[0006] The diameter adjustment mechanism includes a first connecting rod, the bottom of which is fixedly connected to the top of the blown film machine. A hollow shell is fixedly connected to the top of the first connecting rod. A turntable is rotatably connected to the inner cavity of the hollow shell. A planar threaded block is fixedly connected to the top of the turntable. A movable block is provided on the surface of the planar threaded block. A limit groove is opened on the surface of the hollow shell. One side of the movable block is slidably connected to the inner cavity of the limit groove.

[0007] Preferably, the hollow shell has a first gear inside its cavity, the top of which is fixedly connected to the bottom of the turntable. A fixed block is fixedly connected to the bottom of the hollow shell, and a rotating block is rotatably connected to the top of the fixed block. A first hollow groove is formed on the surface of the hollow shell, and a second gear is provided inside the cavity of the first hollow groove. The cavity of the second gear is fixedly connected to the surface of the rotating block, and the teeth of the second gear mesh with the teeth of the first gear.

[0008] Preferably, a connecting block is fixedly connected to the surface of the hollow shell, a worm is rotatably connected to the inner cavity of the connecting block, and a worm wheel is fixedly connected to the surface of the connecting block, with the teeth of the worm wheel meshing with the teeth of the worm.

[0009] Preferably, the surface of the movable block is provided with a second hollow groove, the inner cavity of the second hollow groove is provided with a limit block, the top of the limit block is fixedly connected to a second connecting rod, and the bottom of the second connecting rod is fixedly connected to the top of the hollow shell.

[0010] Preferably, a baffle is fixedly connected to one side of the movable block, and an arc-shaped block is fixedly connected to the bottom of the baffle.

[0011] Preferably, a stop is provided on one side of the worm gear, and one side of the stop is fixedly connected to the inner cavity of the limiting groove.

[0012] Preferably, a first annular block is provided on one side of the connecting block, and a second annular block is provided on the other side of the connecting block, with the inner cavities of the first and second annular blocks fixedly connected to the surface of the connecting block.

[0013] The advantages of this utility model are:

[0014] This invention utilizes a rotating turntable to drive a planar threaded block to rotate. This planar threaded block then drives multiple moving blocks to move synchronously. These moving blocks are located outside the film bubble. When the blown film machine blows plastic particles into a film bubble, the bubble passes through these moving blocks, and its diameter is limited by them, preventing it from becoming larger. This achieves the effect of adjusting the bubble diameter. Furthermore, the moving blocks can control the bubble diameter by moving, allowing the blown film machine to produce films of different widths. This solves the problem that when plastic particles are blown into film bubbles, it is inconvenient to control and adjust the bubble diameter, which prevents the production of films of different widths. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall equipment of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the baffle of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the hollow shell of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the worm gear of this utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of the fixing block of this utility model;

[0021] Figure 6 This is a three-dimensional schematic diagram of the first gear of this utility model.

[0022] In the diagram: 1. Film blowing machine; 2. Diameter adjustment mechanism; 201. First connecting rod; 202. Hollow shell; 203. Turntable; 204. Flat threaded block; 205. Moving block; 206. Limiting groove; 3. First gear; 4. Fixed block; 5. Rotating block; 6. Second gear; 7. First hollow groove; 8. Connecting block; 9. Worm; 10. Worm wheel; 11. Second hollow groove; 12. Limiting block; 13. Second connecting rod; 14. Baffle; 15. Arc-shaped block; 16. Stop block; 17. First annular block; 18. Second annular block. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0025] This application discloses a diameter control mechanism for membrane bubble forming. (Refer to...) Figure 1-3 A diameter control mechanism for bubble forming includes a blown film machine 1, and a diameter adjustment mechanism 2 is provided on the top of the blown film machine 1. The blown film machine 1 can blow plastic particles into a bubble, while the diameter adjustment mechanism 2 blows the outer side of the bubble, thereby controlling and adjusting the diameter of the bubble.

[0026] The diameter adjustment mechanism 2 includes a first connecting rod 201. The bottom of the first connecting rod 201 is fixedly connected to the top of the blown film machine 1. A hollow shell 202 is fixedly connected to the top of the first connecting rod 201. A turntable 203 is rotatably connected to the inner cavity of the hollow shell 202. A planar threaded block 204 is fixedly connected to the top of the turntable 203. A moving block 205 is provided on the surface of the planar threaded block 204. A limiting groove 206 is opened on the surface of the hollow shell 202. One side of the moving block 205 is slidably connected to the inner cavity of the limiting groove 206.

[0027] The first connecting rod 201 can support the hollow shell 202, so that the hollow shell 202 can be stably positioned in the blown film position of the blown film machine 1. The turntable 203 can rotate inside the hollow shell 202 and drive the planar threaded block 204 to rotate together when rotating. The moving block 205 is located on the surface of the planar threaded block 204 and can be moved by the rotating planar threaded block 204. The limiting groove 206 can limit the moving block 205, so that the moving block 205 can move smoothly when the planar threaded block 204 rotates. Multiple moving blocks 205 and limiting grooves 206 are provided, so that multiple moving blocks 205 can move at the same time. After multiple moving blocks 205 move, the middle film bubble can be limited and controlled, so that the diameter of the film bubble cannot become larger, thereby achieving the effect of adjusting the diameter of the film bubble. Moreover, the moving block 205 can control the diameter of the film bubble by moving, so that the film bubble can meet the requirements of different width sizes when it is produced and shaped by the blown film machine 1.

[0028] Reference Figure 3-6 The hollow shell 202 has a first gear 3 in its inner cavity. The top of the first gear 3 is fixedly connected to the bottom of the turntable 203. The bottom of the hollow shell 202 is fixedly connected to a fixing block 4. The top of the fixing block 4 is rotatably connected to a rotating block 5. The surface of the hollow shell 202 has a first hollow groove 7. The inner cavity of the first hollow groove 7 has a second gear 6. The inner cavity of the second gear 6 is fixedly connected to the surface of the rotating block 5. The teeth of the second gear 6 mesh with the teeth of the first gear 3.

[0029] The upper side of the fixed block 4 can be used to support the rotating block 5, so that the rotating block 5 and the second gear 6 can rotate on one side of the hollow shell 202. The second gear 6 can be placed inside the first hollow groove 7, so that the second gear 6 can mesh with the first gear 3. The first gear 3 is connected to the turntable 203, so that people can drive the first gear 3, the turntable 203 and the planar threaded block 204 to rotate by rotating the second gear 6, which makes the rotation of the planar threaded block 204 more convenient.

[0030] Reference Figure 4 A connecting block 8 is fixedly connected to the surface of the hollow shell 202. A worm 9 is rotatably connected to the inner cavity of the connecting block 8. A worm wheel 10 is fixedly connected to the surface of the rotating block 5. The teeth of the worm wheel 10 mesh with the teeth of the worm 9. The connecting block 8 can be used to support the worm 9, so that the worm 9 can rotate on one side of the worm wheel 10. The worm wheel 10 can be connected to the rotating block 5, so that when the worm wheel 10 rotates, it can drive the second gear 6 to rotate together through the rotating block 5. The meshing connection between the worm 9 and the worm wheel 10 has a certain self-locking property, so that after the second gear 6 drives the first gear 3 and the planar threaded block 204 to rotate, and the moving block 205 moves, the moving block 205 can be more stable and is not easy to continue to move.

[0031] Reference Figure 4 The surface of the movable block 205 is provided with a second hollow groove 11. The inner cavity of the second hollow groove 11 is provided with a limiting block 12. The top of the limiting block 12 is fixedly connected to a second connecting rod 13, and the bottom of the second connecting rod 13 is fixedly connected to the top of the hollow shell 202. The second connecting rod 13 can connect to the limiting block 12, so that the limiting block 12 can be located inside the second hollow groove 11. The limiting block 12 can limit the movable block 205 through the second hollow groove 11, so that the movable block 205 is not easy to detach from the limiting groove 206 when moving.

[0032] Reference Figure 2 A baffle 14 is fixedly connected to one side of the moving block 205, and an arc-shaped block 15 is fixedly connected to the bottom of the baffle 14. The baffle 14 can be used to increase the length of the moving block 205, so that the moving block 205 can better limit the membrane bubble. The height of the baffle 14 can be adjusted according to the actual situation, so that the height of the baffle 14 can be located at the position of the membrane bubble forming the film, so that the entire movement process of the membrane bubble can be limited. The arc-shaped block 15 can allow the membrane bubble to move smoothly into one side of the baffle 14.

[0033] Reference Figure 4 A stop 16 is provided on one side of the worm gear 10. One side of the stop 16 is fixedly connected to the inner cavity of the limiting groove 206. The stop 16 can block the moving block 205, so that the moving block 205 is less likely to collide with the worm gear 10 when it moves.

[0034] Reference Figure 4 A first annular block 17 is provided on one side of the connecting block 8, and a second annular block 18 is provided on the other side of the connecting block 8. The inner cavities of the first annular block 17 and the second annular block 18 are fixedly connected to the surface of the connecting block 8. The first annular block 17 and the second annular block 18 are located on both sides of the connecting block 8, so that the worm 9 is not easy to move when it rotates inside the connecting block 8, and thus the worm wheel 10 is not easy to rotate, resulting in better stability.

[0035] Working principle: When using this device, firstly, rotating the worm 9 drives the worm wheel 10 to rotate, which in turn drives the rotating block 5 and the second gear 6 to rotate together. Then, the second gear 6 drives the turntable 203 to rotate through the first gear 3. At the same time, the turntable 203 drives the planar threaded block 204 to rotate together. Then, the planar threaded block 204 drives multiple moving blocks 205 to move synchronously. The multiple moving blocks 205 are located on the outside of the film bubble. When the blown film machine 1 blows plastic particles into film bubbles, the film bubble will pass through the multiple moving blocks. 205, and the diameter of the bubble is limited by multiple moving blocks 205, so that the diameter of the bubble cannot be increased, thereby achieving the effect of adjusting the diameter of the bubble. The moving blocks 205 can control the diameter of the bubble by moving, so that the bubble can meet the requirements of different widths of film when it is produced and shaped by the blown film machine 1. This solves the problem that it is inconvenient to control and adjust the diameter of the bubble when the plastic particles are blown into a bubble by the blown film machine 1, which leads to the inability to meet the requirements of producing films of different widths when the bubble is shaped into a film.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A diameter control mechanism for membrane bubble forming, characterized in that: Includes a blown film machine (1), the top of which is provided with a diameter adjustment mechanism (2). The diameter adjustment mechanism (2) includes a first connecting rod (201), the bottom of which is fixedly connected to the top of the blown film machine (1), and a hollow shell (202) is fixedly connected to the top of the first connecting rod (201). A turntable (203) is rotatably connected to the inner cavity of the hollow shell (202). A planar threaded block (204) is fixedly connected to the top of the turntable (203). A moving block (205) is provided on the surface of the planar threaded block (204). A limiting groove (206) is opened on the surface of the hollow shell (202). One side of the moving block (205) is slidably connected to the inner cavity of the limiting groove (206).

2. The diameter control mechanism for membrane bubble forming according to claim 1, characterized in that: The hollow shell (202) has a first gear (3) in its inner cavity. The top of the first gear (3) is fixedly connected to the bottom of the turntable (203). The bottom of the hollow shell (202) is fixedly connected to a fixing block (4). The top of the fixing block (4) is rotatably connected to a rotating block (5). The surface of the hollow shell (202) has a first hollow groove (7). The inner cavity of the first hollow groove (7) has a second gear (6). The inner cavity of the second gear (6) is fixedly connected to the surface of the rotating block (5). The teeth of the second gear (6) mesh with the teeth of the first gear (3).

3. The diameter control mechanism for membrane bubble forming according to claim 2, characterized in that: A connecting block (8) is fixedly connected to the surface of the hollow shell (202), and a worm (9) is rotatably connected to the inner cavity of the connecting block (8). A worm wheel (10) is fixedly connected to the surface of the rotating block (5), and the teeth of the worm wheel (10) mesh with the teeth of the worm (9).

4. The diameter control mechanism for membrane bubble forming according to claim 1, characterized in that: The surface of the movable block (205) is provided with a second hollow groove (11), and the inner cavity of the second hollow groove (11) is provided with a limiting block (12). The top of the limiting block (12) is fixedly connected to a second connecting rod (13), and the bottom of the second connecting rod (13) is fixedly connected to the top of the hollow shell (202).

5. The diameter control mechanism for membrane bubble forming according to claim 1, characterized in that: A baffle (14) is fixedly connected to one side of the movable block (205), and an arc-shaped block (15) is fixedly connected to the bottom of the baffle (14).

6. The diameter control mechanism for membrane bubble forming according to claim 3, characterized in that: A stop (16) is provided on one side of the worm gear (10), and one side of the stop (16) is fixedly connected to the inner cavity of the limiting groove (206).

7. The diameter control mechanism for membrane bubble forming according to claim 3, characterized in that: A first annular block (17) is provided on one side of the connecting block (8), and a second annular block (18) is provided on the other side of the connecting block (8). The inner cavities of the first annular block (17) and the second annular block (18) are both fixedly connected to the surface of the connecting block (8).

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