Film bubble stabilizing and protecting device

Abstract

The utility model discloses a film bubble stabilizing and protecting device which comprises a plurality of telescopic units which are arranged at equal intervals in the circumferential direction. The telescopic ends of the multiple telescopic units are arranged in the radial direction of the arrangement ring in a reciprocating mode. The telescopic ends of the multiple telescopic units are driven by an annular adjusting mechanism to expand or gather relatively and synchronously. A guide roller is arranged at the telescopic end of the telescopic unit and makes contact with the outer side of the cylindrical film in an attached mode. According to the utility model, the plurality of electrically-driven guide rollers are synchronously adjusted, the operation steps are simplified, the position accuracy of the adjusted guide rollers is improved, and a more stable protection effect on film bubbles is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of film processing equipment, in particular to a film bubble stabilization and protection device. Background Art

[0002] The film bubble, also known as the film tube, is the film that is inflated and pulled during film blowing. It has a cylindrical structure as a whole. During the blowing and pulling process, due to the instability of the radial position of the film bubble, a protective device is usually required on the outside. Common protective devices are composed of multiple adjustable rollers that contact the outside of the film bubble, thereby constraining its radial position and avoiding the impact of large swings on the quality of the film bubble. However, common protective devices require adjusting the position of the rollers one by one, which is not only troublesome to operate, but also difficult to ensure accuracy, and cannot achieve the expected protection effect. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a film bubble stabilization protection device, which electrically drives multiple guide rollers to adjust synchronously, simplifies the operating steps, improves the position accuracy of the guide rollers after adjustment, and achieves a more stable protection for the film bubble.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a film bubble stabilization protection device, comprising a plurality of telescopic units, wherein a plurality of the telescopic units are arranged circumferentially and equidistantly; the telescopic ends of the plurality of telescopic units are arranged to reciprocate radially along the arrangement ring; the telescopic ends of the plurality of telescopic units are driven by a circumferential adjustment mechanism to expand or gather relatively synchronously; the telescopic ends of the telescopic units are provided with guide rollers, which are in close contact with the outside of the cylindrical film.

[0005] Furthermore, the telescopic unit is provided with a fixed frame and a movable frame, and the movable frame is connected to the fixed frame via a spacing adjustment mechanism; a plurality of the fixed frames are connected and fixed in relative position via a ring frame, and the ring frame is sleeved on the outside of the cylindrical film and is movable and adjusted along the length direction of the cylindrical film.

[0006] Furthermore, the fixed frame and the movable frame are parallel to each other and arranged vertically, and the spacing adjustment mechanism includes two mutually crossed cantilevers, the middle parts of the two cantilevers are hinged to each other, the hinged ends of the two cantilevers are respectively hinged to the fixed frame and the movable frame, and the adjustment ends of the two cantilevers are respectively hingedly provided with a slider and a walking mechanism, and the slider and the walking mechanism are respectively slidably cooperated with the fixed frame and the movable frame.

[0007] Furthermore, the circumferential adjustment mechanism includes a ranging module corresponding to each of the walking mechanisms, the ranging module is fixedly arranged at one end of the walking track of the walking mechanism, and the ranging value feedback signal output end of the ranging module is electrically connected to the control signal receiving end corresponding to the walking mechanism through the control module.

[0008] Furthermore, a plurality of guide rollers are arranged on the movable frame, and the plurality of guide rollers are arranged at intervals along the length direction of the tubular film.

[0009] Furthermore, the plurality of guide rollers at the telescopic ends of adjacent telescopic units are alternately arranged.

[0010] Beneficial effects: The utility model provides a film bubble stabilization protection device, which forms a protection cage structure by having multiple guide rollers that are electrically driven to gather or spread synchronously and abut against the film bubble surface. The multiple guide rollers move synchronously to improve the adjustment efficiency; and the position of each guide roller can be adjusted independently, and the position accuracy can be further fine-tuned to improve the concentricity of the protection ring formed by the multiple guide rollers relative to the center of the film bubble; the adjustment amount is controlled by the feedback of the displacement measurement value of the walking mechanism, and the short-distance distance measurement accuracy is higher, which effectively ensures the synchronization of multi-roller adjustment and the accuracy of the adjustment distance, thereby achieving the expected effective protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic top view of the overall structure of an embodiment of the utility model;

[0012] Attached Figure 2 It is a schematic diagram of a structural front cross-section of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] As attached Figure 1-2 The described film bubble stabilization and protection device comprises a plurality of telescopic units 1, wherein the plurality of telescopic units 1 are arranged circumferentially and equidistantly; the telescopic ends of the plurality of telescopic units 1 are arranged to reciprocate radially along the arrangement ring; the telescopic ends of the plurality of telescopic units 1 are driven by a circumferential adjustment mechanism to expand or gather relatively synchronously; the telescopic ends of the telescopic units 1 are provided with guide rollers 3, and the guide rollers 3 are in close contact with the outside of the cylindrical film 4.

[0015] In this solution, multiple telescopic units respectively control multiple guide rollers to contact the film. The circumferential adjustment mechanism is electrically driven to enable multiple telescopic units to be adjusted synchronously, and the adjustment amount can be accurately controlled to achieve rapid contact of multiple guide rollers with the film, reducing the operation time of adjusting one by one, and each telescopic unit can be adjusted independently. After quickly approaching the film through synchronous action, the corresponding telescopic unit can be controlled individually for the roller that fails to contact the film, thereby ensuring the position accuracy of the guide roller after adjustment.

[0016] The telescopic unit 1 is provided with a fixed frame 11 and a movable frame 12, and the movable frame 12 is connected to the fixed frame 11 through a spacing adjustment mechanism 5; a plurality of the fixed frames 11 are connected and fixed in relative position through a ring frame 13, and the ring frame 13 is sleeved on the outside of the tubular film 4, and is movable and adjustable along the length direction of the tubular film 4. Among them, the ring frame is connected with a plurality of fixed frames to form a cylindrical cage structure, and the cage structure is coaxially sleeved relative to the outside of the inflated and pulled film bubble, and its position corresponding to the film bubble can be adjusted by a lifting device, so that the best position can be selected according to demand to protect the film bubble. The movable frames inside the cage frame are based on the corresponding fixed frame, and the distance between the two is adjusted to make the guide roller contact with the film bubble, so that the device can adapt to the protection of films with any radius size within the allowable range of the ring frame size.

[0017] Since the film bubble is usually pulled vertically, the fixed frame 11 and the movable frame 12 are parallel to each other and arranged vertically, wherein both the fixed frame 11 and the movable frame 12 can adopt square steel, channel steel and other strip-shaped hard structures. Based on this, the spacing adjustment mechanism 5 adopts a connecting rod mechanism, including two mutually intersecting cantilevers 51, the cantilevers adopt hard rods, and the middle parts of the two cantilevers 51 are hinged to each other; the two ends of the cantilever are respectively a hinged end 511 and an adjustment end 512, the hinged ends 511 of the two cantilevers 51 are respectively hinged to the fixed frame 11 and the movable frame 12, and the adjustment ends 512 of the two cantilevers 51 are respectively hinged with a slider 52 and a walking mechanism 53, and the slider 52 and the walking mechanism 53 are respectively slidably matched with the fixed frame 11 and the movable frame 12.

[0018] The walking mechanism is the power source of the spacing adjustment structure. The electric-driven walking mechanism slides vertically, thereby changing the angle between the cantilever and the corresponding hinged frame, thereby achieving the purpose of adjusting the distance between the fixed frame 11 and the mobile frame 12. Preferably, the walking mechanism is movably arranged at the lower end of the fixed frame, and the upper end of the corresponding cantilever is hinged to the upper end of the mobile frame. Correspondingly, the slider is slidably arranged at the lower end of the mobile frame, and the upper end of the corresponding cantilever is hinged to the upper end of the fixed frame.

[0019] The circumferential adjustment mechanism includes a distance measuring module 2 corresponding to each of the walking mechanisms 53, and the distance measuring module 2 is fixedly arranged at one end of the walking track of the walking mechanism 53. The distance measuring value feedback signal output end of the distance measuring module 2 is electrically connected to the control signal receiving end corresponding to the walking mechanism 53 through the control module.

[0020] The displacement of the walking mechanism is measured by the distance measurement module to reflect the distance between the mobile frame and the fixed frame. Under the premise of ensuring that the fixed frame has a deviation relative to the center position, multiple walking mechanisms are started at the same time according to the radius of the film bubble to be protected, and the distance measurement feedback values ​​of the final stop position are guaranteed to be consistent, thereby effectively ensuring the adjustment accuracy of the guide roller position and ensuring the contact between the guide roller and the film bubble to achieve the expected protection effect.

[0021] The movable frame 12 is provided with a plurality of guide rollers 3, and the plurality of guide rollers 3 are arranged at intervals along the length direction of the tubular film 4. Preferably, the plurality of guide rollers 3 at the telescopic ends of adjacent telescopic units 1 are arranged alternately and interspersed. The protection area can be extended and the protection effect can be enhanced. The interspersed arrangement can avoid too many guide rollers that gather together in the same plane and cause interference with each other, so that the protection of the bubble with a smaller radius can be met. Among them, the guide rollers are preferably made of carbon fiber material, which has the advantage of being light in weight. When in contact with the bubble, they are easily driven by the bubble, thereby improving smoothness, reducing damage and stretching to the bubble, and improving the molding quality of the bubble.

[0022] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A film bubble stabilization and protection device, characterized in that: The invention comprises a plurality of telescopic units (1), wherein the plurality of telescopic units (1) are arranged equidistantly in the annular direction; the telescopic ends of the plurality of telescopic units (1) are arranged to reciprocate radially along the arrangement ring; the telescopic ends of the plurality of telescopic units (1) are driven by an annular adjustment mechanism to expand or gather relatively synchronously; the telescopic ends of the telescopic units (1) are provided with guide rollers (3), and the guide rollers (3) are in close contact with the outside of the cylindrical film (4); The telescopic unit (1) is provided with a fixed frame (11) and a movable frame (12), and the movable frame (12) is connected to the fixed frame (11) via a spacing adjustment mechanism (5); the fixed frame (11) and the movable frame (12) are parallel to each other and arranged vertically, and the spacing adjustment mechanism (5) includes two mutually intersecting cantilevers (51); The middle parts of the two cantilevers (51) are hinged to each other, the hinged ends (511) of the two cantilevers (51) are hinged to the fixed frame (11) and the movable frame (12) respectively, and the adjustment ends (512) of the two cantilevers (51) are hinged to be provided with a slider (52) and a walking mechanism (53) respectively, and the slider (52) and the walking mechanism (53) are slidably matched with the fixed frame (11) and the movable frame (12) respectively; The circumferential adjustment mechanism comprises a distance measuring module (2) corresponding to each of the walking mechanisms (53); the distance measuring module (2) is fixedly arranged at one end of the walking track of the walking mechanism (53); and the distance measuring value feedback signal output end of the distance measuring module (2) is electrically connected to the control signal receiving end corresponding to the walking mechanism (53) through a control module.

2. A film bubble stabilization and protection device according to claim 1, characterized in that: The plurality of fixing frames (11) are connected and fixed in relative position via a ring frame (13); the ring frame (13) is sleeved on the outside of the tubular film (4) and is movable and adjustable along the length direction of the tubular film (4).

3. A film bubble stabilization and protection device according to claim 2, characterized in that: A plurality of guide rollers (3) are arranged on the movable frame (12), and the plurality of guide rollers (3) are arranged at intervals along the length direction of the tubular film (4).

4. A film bubble stabilization and protection device according to claim 3, characterized in that: The plurality of guide rollers (3) at the telescopic ends of adjacent telescopic units (1) are arranged alternately and interlaced.

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