Film fixing ring frame device of film blowing machine

Abstract

The utility model discloses a film fixing ring frame device of a film blowing machine, which comprises an outer frame, a lifting frame is movably arranged on the outer frame, the lifting frame is connected with a lifting adjusting assembly, a movable frame is arranged on the lifting frame in a surrounding manner, the movable frame can define a film fixing space, a film fixing assembly is arranged on the movable frame, and the lifting frame is connected with the lifting adjusting assembly. The movable frame is connected with a movable adjusting assembly, the movable adjusting assembly can drive the movable frame to act and adjust the diameter of the film fixing space, the film fixing assembly comprises an installation base arranged on the movable frame, a bent elastic bubble stabilizing rod is arranged on the installation base, an extrusion block is arranged on the lifting frame, and the extrusion block is connected with the movable frame. And a spring is arranged between the extrusion block and the lifting frame, and the extrusion block can extrude the middle position of the elastic foam stabilizing rod. The bubble stabilizing device is simple in structure and reasonable in design, automatic adjustment of the movable frame can be conveniently achieved, the positioning contact area with a bubble is increased, and the bubble stabilizing quality is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a film blowing machine, specifically to a film blowing machine's fixed film ring frame device. BACKGROUND

[0002] The film blowing machine is a special equipment for producing plastic film. The plastic film is generally positioned by the fixed film ring structure during the film pulling process to ensure the quality of the blown film. The Chinese patent document (publication number: CN 212979234 U; publication date: April 16, 2021) discloses a film bubble stabilizing device for a film blowing machine, which is characterized by including a support, a bubble stabilizing support, a driving mechanism, and a bubble stabilizing roller mechanism. The bubble stabilizing support is movably arranged on the support by the driving mechanism. The bubble stabilizing roller mechanism is fixedly arranged on the bubble stabilizing support. The bubble stabilizing roller mechanism includes at least twelve bubble stabilizing roller units, and each four bubble stabilizing roller units are arranged in cooperation with each other. The bubble stabilizing roller unit includes a bubble stabilizing roller one, a bubble stabilizing roller two, a bubble stabilizing roller support, and a movable support. The bubble stabilizing roller one is rotatably arranged on the bubble stabilizing roller support. The movable support is slidably arranged on the bubble stabilizing roller support. The bubble stabilizing roller two is rotatably arranged on the movable support.

[0003] The above structure has the following defects: 1. When the size of the film bubble changes, the movable support needs to be manually adjusted to drive the bubble stabilizing roller to move, which is very troublesome and time-consuming; 2. The bubble stabilizing roller adopts a straight roller structure, which can only make linear contact or small-area contact with the film bubble during actual bubble stabilizing, and the bubble stabilizing effect is limited. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the background art, the technical problem to be solved by the utility model is to provide a film blowing machine's fixed film ring frame device for solving the above problems.

[0005] To this end, the utility model is implemented by the following scheme:

[0006] A film blowing machine's fixed film ring frame device, including an outer frame, a lifting frame movably arranged on the outer frame, and a lifting adjustment assembly connected with the lifting frame, characterized in that: an activity frame is circumferentially arranged on the lifting frame, the activity frame can enclose a film positioning space, a film positioning assembly is arranged on the activity frame, the activity frame is connected with an activity adjustment assembly, the activity adjustment assembly can drive the activity frame to move to adjust the diameter of the film positioning space, the film positioning assembly includes a mounting seat arranged on the activity frame, a curved elastic bubble stabilizing rod is arranged on the mounting seat, a pressing block is arranged on the lifting frame, a spring is arranged between the pressing block and the lifting frame, and the pressing block can press the middle part of the elastic bubble stabilizing rod.

[0007] The lifting adjusting assembly comprises first screw rods arranged in a quadrilateral, each first screw rod is provided with a first sprocket, each sprocket is connected through a chain, and one of the first screw rods is connected with the output end of the first motor.

[0008] The movable adjusting assembly comprises second screw rods arranged corresponding to each movable frame, the second screw rods are screwed with corresponding lifting blocks, the lifting blocks are hinged with one end of the first connecting rod, the other end of the first connecting rod is hinged with one end of the second connecting rod, the middle part of the second connecting rod is hinged with the middle part of the third connecting rod, one end of the third connecting rod is hinged with the movable frame, and the other end is hinged with the lifting frame, the other end of the second connecting rod is hinged with the middle part of the fourth connecting rod, one end of the fourth connecting rod is hinged with the movable frame, and the other end is hinged with the lifting frame, each second screw rod is connected with a corresponding synchronous wheel, each synchronous wheel is connected through a synchronous belt, and one of the synchronous wheels is connected with the output end of the second motor.

[0009] The elastic bubble stabilizing rod is arranged on the bubble stabilizing wheel.

[0010] The movable adjusting assembly driven by the motor, the screw rod and the connecting rod can automatically control and adjust the movable frame, so that the fixed film space can adapt to film bubbles of different specifications, and the flexibility of use is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model discloses the following drawings:

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 It is the local enlarged view of A direction in the middle;

[0014] Figure 3 It is Figure 1 It is the local enlarged view of B direction in the middle. DETAILED DESCRIPTION

[0015] As shown in the figure, the utility model discloses a kind of film fixing ring frame devices of film blowing machine, including outer frame 1, outer frame 1 is movably provided with lifting frame 3, lifting frame 3 is connected with lifting adjustment component, lifting frame 3 is movably provided with movable rack 6, movable rack 6 can enclose film fixing space, movable rack 6 is provided with film fixing component, movable rack 6 is connected with movable adjustment component, movable adjustment component can drive movable rack 6 to act, the diameter of film fixing space is adjusted, film fixing component includes the mounting seat 8 arranged on movable rack 6, mounting seat 8 is provided with the elastic bubble-stabilizing rod 10 of bending shape, extruding block 7 is provided on lifting frame 3, spring is arranged between extruding block 7 and lifting frame 3, and extruding block 7 can extrude the middle position of elastic bubble-stabilizing rod 10.

[0016] Further, lifting adjustment component includes the first screw rod 4 of four-corner distribution, each first screw rod 4 is provided with first sprocket 5, each sprocket 5 is linked by chain, to realize the linkage of each first screw rod 4, each first screw rod 4 is screwed with lifting frame 3, and one of first screw rod is connected with the output end of first motor 2.Using the above structure, by controlling first motor 2 to drive first screw rod 4 to rotate, lifting frame 3 can be driven to lift.

[0017] Further, movable adjustment component includes the second screw rod 12 arranged corresponding each movable rack 6, second screw rod 12 is screwed with corresponding lifting block 13, lifting block 13 is provided with guide column 11, lifting block 13 is hinged with one end of first connecting rod 14, the other end of first connecting rod 14 is hinged with one end of second connecting rod 15, the middle part of second connecting rod 15 is hinged with the middle part of third connecting rod 16, one end of third connecting rod 16 is hinged with movable rack 6, and the other end is hinged with lifting frame 3, the other end of second connecting rod 15 is hinged with the middle part of fourth connecting rod 17, one end of fourth connecting rod 17 is hinged with movable rack 6, and the other end is hinged with lifting frame 3, each second screw rod 12 is connected with corresponding synchronous wheel, each synchronous wheel is linked by synchronous belt, one of synchronous wheel is connected with the output end of second motor 18, and second motor 18 is arranged on lifting frame 3.Using the above structure, by controlling second motor 18 to drive second screw rod 12 to rotate, lifting block 13 can be driven to lift, and then movable rack 6 moves inwards or outwards through connecting rod structure transmission, to adjust the diameter of film fixing space, to adapt to different specifications of bubble.

[0018] Further, bubble-stabilizing rod 10 is arranged with bubble-stabilizing wheel 9.Using this structure, bubble-stabilizing wheel 9 can realize rolling contact with bubble, reduce friction to bubble, further guarantee the stability of bubble.

[0019] The working principle of the utility model is: after the membrane bubble is blown out, the membrane bubble is guided by the bubble stabilizing wheel 9 on the elastic bubble stabilizing rod 10, so that the membrane bubble is stretched and pulled in a stable annular shape upwards. When the size of the membrane bubble becomes larger, the second motor 18 can be controlled to move, and the second screw rod 12 and the connecting rod structure are driven to move, so that the movable frame 6 moves outward, the membrane space is enlarged, and at this time, the elastic bubble stabilizing rod 10 moves towards the extrusion block 7, the extrusion block 7 further extrudes the elastic bubble stabilizing rod 10, so that the bending amplitude of the elastic bubble stabilizing rod 10 becomes smaller, and the profile of the large-size membrane bubble is adapted. When the size of the membrane bubble becomes smaller, the movable frame 6 is driven by the second motor 18 to move inward, so that the membrane space is reduced, and at this time, the elastic bubble stabilizing rod moves away from the extrusion block 7, so that the pressure applied by the extrusion block 7 to the elastic bubble stabilizing rod 10 becomes smaller, and the elastic bubble stabilizing rod 10 is bent to a larger amplitude under the elastic restoring force of the elastic bubble stabilizing rod 10, and the profile of the small-size membrane bubble is adapted.

Claims

1. A film setting ring frame device of a film blowing machine, comprising an outer frame (1), a lifting frame (3) movably arranged on the outer frame (1), and a lifting adjusting assembly connected with the lifting frame (3), characterized in that: The lifting frame (3) is provided with a movable frame (6) around it, the movable frame (6) can enclose a film fixing space, the movable frame (6) is provided with a film fixing assembly, the movable frame (6) is connected with a movable adjusting assembly, the movable adjusting assembly can drive the movable frame (6) to act, and the diameter of the film fixing space is adjusted, the film fixing assembly comprises a mounting seat (8) provided on the movable frame (6), the mounting seat (8) is provided with an elastic bubble stabilizing rod (10) in a curved shape, the lifting frame (3) is provided with a pressing block (7), the pressing block (7) and the lifting frame (3) are provided with a spring therebetween, and the pressing block (7) can extrude the middle position of the elastic bubble stabilizing rod (10).

2. The film setting ring holder device of claim 1, wherein: The lifting adjusting assembly comprises first screw rods (4) distributed in a quadrilateral shape, each first screw rod (4) is provided with a first sprocket (5), each sprocket (5) is connected through a chain, and each first screw rod (4) is screwed with the lifting frame (3), and one of the first screw rods is connected with the output end of the first motor (2).

3. The film setting ring holder device of claim 1, wherein: The movable adjusting assembly comprises second screw rods (12) corresponding to each movable frame (6), the second screw rods (12) are screwed with corresponding lifting blocks (13), one end of the lifting block (13) is hinged with a first connecting rod (14), the other end of the first connecting rod (14) is hinged with one end of a second connecting rod (15), the middle part of the second connecting rod (15) is hinged with the middle part of a third connecting rod (16), one end of the third connecting rod (16) is hinged with the movable frame (6), the other end is hinged with the lifting frame (3), the other end of the second connecting rod (15) is hinged with the middle part of a fourth connecting rod (17), one end of the fourth connecting rod (17) is hinged with the movable frame (6), the other end is hinged with the lifting frame (3), each second screw rod (12) is connected with a corresponding synchronous wheel, each synchronous wheel is connected through a synchronous belt, one of the synchronous wheels is connected with the output end of the second motor (18), and the second motor (18) is arranged on the lifting frame (3).

4. The film setting ring holder device of claim 1, wherein: The elastic bubble stabilizing rod (10) is provided with a bubble stabilizing wheel (9) arranged thereon.

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