Anti-rolling mechanism for strong cross film stretching equipment

Abstract

The utility model belongs to the technical field of film stretching equipment, and particularly relates to an anti-rolling mechanism for strong cross film stretching equipment, which comprises a rack, a stretching mechanism and an anti-rolling mechanism are arranged on the rack, and the stretching mechanism comprises a first heating cylinder, a first upper traction mechanism and a first lower traction mechanism. The traction speed of the first upper traction mechanism is smaller than that of the first lower traction mechanism, the anti-rolling mechanism comprises a second heating cylinder, a second upper traction mechanism and a second lower traction mechanism are arranged above and below the second heating cylinder respectively, and the traction speed of the second upper traction mechanism is the same as that of the second lower traction mechanism. According to the utility model, the powerful crossed film is heated in the first heating cylinder, then the powerful crossed film is stretched through the speed difference between the first upper traction mechanism and the first lower traction mechanism, the powerful crossed film is secondarily heated in the second heating cylinder, and the speed of the second upper traction mechanism is the same as that of the second lower traction mechanism; and the strong cross film is prevented from curling after being stretched.

Description

Technical Field

[0001] The utility model belongs to the technical field of film stretching equipment, and particularly relates to an anti-rolling mechanism for a strong cross-film stretching equipment. Background Technique

[0002] The strong cross-film is a high-performance, cold-construction self-adhesive composite waterproof coiled material composed of a specially made cross-laminated high-density polyethylene (HDPE) strong film and high-quality polymer self-adhesive rubber asphalt through a special process, and has excellent dimensional stability, thermal stability, ultraviolet resistance and bidirectional tear resistance.

[0003] At present, the process of producing cross-films in China is asynchronous. First, the film is blown, then stretched, and finally simply shaped. However, there are certain problems with the existing stretching equipment.

[0004] For example, an energy-saving cross-film integrated device with the publication number of CN110216897A includes a film blowing and winding machine, a film winding and coiling machine, a film blowing mechanism, a stretching mechanism and a shaping mechanism. The film blowing mechanism blends polyethylene and polypropylene materials, extrudes them, and cools and forms them through an air ring to produce a film; the stretching mechanism increases the strength of the film through the temperature difference and the speed difference of the traction rollers for the cylindrical film; the shaping mechanism releases the internal cohesion of the stretched film to make the film performance stable; the film winding and coiling machine winds the film into a roll.

[0005] During the stretching process of the film by the stretching mechanism of the above device, the film is stretched by heating the film and the speed difference of the traction rollers. However, after the film is stretched by this stretching method, the film will generate certain stress, resulting in the stretched film being prone to curling and the product being unqualified. Content of the Utility Model

[0006] The purpose of the utility model is to provide an anti-rolling mechanism for a strong cross-film stretching equipment to solve the problems raised in the above background technique.

[0007] To achieve the above technical purpose, the technical solution of the utility model is as follows:

[0008] An anti-rolling mechanism for a strong cross-film stretching equipment includes a frame. A stretching mechanism is provided on the frame. The stretching mechanism includes a first heating cylinder, a first upper traction mechanism and a first lower traction mechanism. The traction speed of the first upper traction mechanism is less than that of the first lower traction mechanism. An anti-rolling mechanism is also provided on the frame on one side of the stretching mechanism. The anti-rolling mechanism includes a second heating cylinder. A second upper traction mechanism and a second lower traction mechanism are respectively provided above and below the second heating cylinder. The traction speeds of the second upper traction mechanism and the second lower traction mechanism are the same.

[0009] As an improvement, a second roller bubble rack is provided below the second upper traction mechanism above the second heating cylinder. A fixing ring is provided at the bottom of the second roller bubble rack on the top of the second heating cylinder. A plurality of thickness detectors are provided on the fixing ring, and the plurality of thickness detectors are evenly arranged along the circumference of the fixing ring.

[0010] As a further improvement, a plurality of heating mechanisms are provided in the first heating cylinder from top to bottom. Each heating mechanism is provided with a plurality of heating zones, and the plurality of heating zones are evenly arranged along the circumference of the first heating cylinder. Each heating zone in each of the plurality of heating mechanisms is respectively connected to a temperature regulator, and the number of heating zones in each heating mechanism is the same as the number of thickness detectors.

[0011] As a further improvement, a plurality of heating sheets are provided in each heating zone, and the plurality of heating sheets in each heating zone are commonly connected to the same temperature regulator.

[0012] As a further improvement, there are four groups of heating mechanisms, each heating mechanism is provided with eight heating zones, and there are eight thickness detectors.

[0013] As a further improvement, a first roller bubble rack is provided below the first upper traction mechanism at the top of the first heating cylinder. An upper transmission roller and a lower transmission roller are arranged up and down between the stretching mechanism and the anti-rolling mechanism. The setting position of the upper transmission roller is adapted to the second upper traction mechanism, and the setting position of the lower transmission roller is adapted to the first lower traction mechanism.

[0014] As a further improvement, herringbone plates are provided below both the first heating cylinder and the second heating cylinder, and the first lower traction mechanism and the second lower traction mechanism are respectively located at the bottoms of the two herringbone plates.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0016] The anti-rolling mechanism for the strong cross-membrane stretching device provided by the present utility model heats the strong cross-membrane in the first heating cylinder, and then realizes the stretching of the strong cross-membrane through the speed difference between the first upper traction mechanism and the first lower traction mechanism. The strong cross-membrane is reheated in the second heating cylinder, and the speeds of the second upper traction mechanism and the second lower traction mechanism are the same, preventing the strong cross-membrane from becoming curled after stretching.

[0017] By providing eight thickness detectors to detect the thickness of the membrane, and adjusting the temperatures of the eight heating zones in each heating mechanism according to the detected values, the thickness of the membrane can be adjusted both axially and circumferentially, and the stretching quality of the membrane is better, without the situation of uneven thickness. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of this embodiment;

[0019] Figure 2 is the front view of this embodiment;

[0020] Figure 3 is an exploded view of the stretching mechanism in this embodiment;

[0021] Figure 4 is an exploded view of the anti - curling mechanism in this embodiment;

[0022] Wherein: 1 - frame, 2 - stretching mechanism, 3 - first heating cylinder, 4 - first upper traction mechanism, 5 - first lower traction mechanism, 6 - anti - curling mechanism, 7 - second heating cylinder, 8 - second upper traction mechanism, 9 - second lower traction mechanism, 10 - second roll bubble frame, 11 - fixing ring, 12 - thickness detector, 13 - first roll bubble frame, 14 - upper driving roll, 15 - lower driving roll, 16 - chevron plate. Detailed implementation manners

[0023] The following further describes the present utility model in combination with the detailed implementation manners and the accompanying drawings. Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to this application; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well - known structures and their descriptions in the accompanying drawings may be omitted.

[0024] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation to this application. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms can be understood according to specific situations.

[0025] As Figures 1-4 shown, an anti - curling mechanism 6 for a strong cross - film stretching device includes a frame 1. A stretching mechanism 2 is provided on the frame 1. The stretching mechanism 2 includes a first heating cylinder 3, a first upper traction mechanism 4 and a first lower traction mechanism 5. The traction speed of the first upper traction mechanism 4 is less than the traction speed of the first lower traction mechanism 5. The strong cross - film is heated by the first heating cylinder 3, and then the strong cross - film is stretched by the speed difference generated by the first upper traction mechanism 4 and the first lower traction mechanism 5.

[0026] On one side of the stretching mechanism 2 on the frame 1, there is also an anti - curling mechanism 6. The anti - curling mechanism 6 includes a second heating cylinder 7. Above and below the second heating cylinder 7, there are a second upper traction mechanism 8 and a second lower traction mechanism 9 respectively. The traction speeds of the second upper traction mechanism 8 and the second lower traction mechanism 9 are the same. After the strong cross - membrane is stretched by the stretching mechanism 2, certain stress will be generated in the membrane itself, which makes the stretched membrane prone to curling. By reheating the stretched membrane through the second heating cylinder 7, the stress in the membrane is eliminated, so as to achieve the purpose of preventing the membrane from curling and improving the stretching quality of the membrane.

[0027] In this embodiment, below the second upper traction mechanism 8 above the second heating cylinder 7, there is a second roll - bubble frame 10. At the top of the second heating cylinder 7 at the bottom of the second roll - bubble frame 10, there is a fixing ring 11. On the fixing ring 11, there are a plurality of thickness detectors 12. The plurality of thickness detectors 12 are evenly arranged along the circumference of the fixing ring 11, and the plurality of thickness detectors 12 detect the thickness of different parts of the membrane circumference.

[0028] In this embodiment, the thickness detector 12 uses laser detection, or other types of thickness detectors 12 can also be used, as long as it can detect the thickness of the membrane.

[0029] In this embodiment, inside the first heating cylinder 3, there are multiple groups of heating mechanisms from top to bottom. Each group of heating mechanisms has a plurality of heating zones. The plurality of heating zones are evenly arranged along the circumference of the first heating cylinder 3. Each heating zone in the multiple groups of heating mechanisms is respectively connected to a temperature regulator. The number of heating zones in each group of heating mechanisms is the same as the number of thickness detectors 12.

[0030] In this embodiment, each heating zone is provided with a plurality of heating sheets, and the plurality of heating sheets in each heating zone are commonly connected to the same temperature regulator.

[0031] In this embodiment, there are four groups of heating mechanisms. Each group of heating mechanisms has eight heating zones, and there are eight thickness detectors 12.

[0032] The thickness of different parts of the membrane circumference is detected by eight thickness detectors 12 respectively, and then the heating temperature of each heating zone of the four groups of heating mechanisms is adjusted to adjust the thickness of the membrane in the axial and circumferential directions, so as to prevent the thick part from getting thicker and the thin part from getting thinner during the membrane stretching process.

[0033] In this embodiment, the positions of the eight heating zones in each group of heating mechanisms are axially corresponding to the positions of the eight thickness detectors.

[0034] In this embodiment, eight thickness detectors 12 and multiple temperature regulators are electrically connected to the PLC. The data detected by the eight thickness detectors 12 is transmitted to the PLC, and the PLC controls each temperature regulator to adjust the heating temperature of the heating sheets in each heating zone. As the heating temperature increases, the thickness of the high-strength cross film can be adjusted to become thinner.

[0035] In this embodiment, a first roller bubble frame 13 is provided below the top of the first heating cylinder 3 and under the first upper traction mechanism 4. An upper transmission roller 14 and a lower transmission roller 15 are arranged up and down between the stretching mechanism 2 and the anti-rolling mechanism 6. The setting position of the upper transmission roller 14 is adapted to the second upper traction mechanism 8, and the setting position of the lower transmission roller 15 is adapted to the first lower traction mechanism 5. After the high-strength cross film leaves the stretching mechanism 2 at the output position of the first lower traction mechanism 5 of the stretching mechanism 2, it is transported to the upper transmission roller 14 through the lower transmission roller 15, and then transported to the second upper traction mechanism 8 through the upper transmission roller 14.

[0036] In this embodiment, herringbone plates 16 are provided below both the first heating cylinder 3 and the second heating cylinder 7, and the first lower traction mechanism 5 and the second lower traction mechanism 9 are respectively located at the bottoms of the two herringbone plates 16.

[0037] In this embodiment, the first upper traction mechanism 4, the first lower traction mechanism 5, the second upper traction mechanism 8, and the second lower traction mechanism 9 are prior arts and are all used to traction the movement of the film.

[0038] In this embodiment, a plurality of heating sheets are provided in the second heating cylinder 7. The heating sheets can be electrically heated, as long as they can realize heating the film in the first heating cylinder 3 and the second heating cylinder 7.

[0039] When this embodiment is in use, the high-strength cross film enters the first roller bubble frame 13 through the first upper traction mechanism 4, then enters the first heating cylinder 3, then is transported to the first lower traction mechanism 5 through the herringbone plate 16, then is transported to the upper transmission roller 14 through the lower transmission roller 15, then is transported to the second roller bubble frame 10 through the second upper traction mechanism 8, and then is transported to the second lower traction mechanism 9 through the first roller bubble frame 13, the fixing ring 11, the second heating cylinder 7, and the herringbone plate 16 and is output by the second lower traction mechanism 9. The high-strength cross film is heated in the first heating cylinder 3, and then the stretching of the high-strength cross film is realized through the speed difference between the first upper traction mechanism 4 and the first lower traction mechanism 5. The high-strength cross film is reheated in the second heating cylinder 7 to prevent the high-strength cross film from becoming curled after stretching.

[0040] In this embodiment, after the high-strength cross film is output from the second lower traction mechanism 9, it enters the cooling mechanism for cooling and shaping. The cooling mechanism is a prior art and will not be elaborated here.

[0041] The specific implementation manners of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An anti-rolling mechanism for a high-strength cross-membrane stretching device, comprising a frame, a stretching mechanism is provided on the frame, the stretching mechanism includes a first heating cylinder, a first upper traction mechanism and a first lower traction mechanism, and the traction speed of the first upper traction mechanism is less than that of the first lower traction mechanism. It is characterized in that, On one side of the stretching mechanism on the frame, there is also an anti-rolling mechanism, which includes a second heating cylinder. Above and below the second heating cylinder, there are a second upper traction mechanism and a second lower traction mechanism respectively, and the traction speeds of the second upper traction mechanism and the second lower traction mechanism are the same.

2. The anti-rolling mechanism for the strong cross-membrane stretching equipment according to claim 1, characterized in that, Below the second upper traction mechanism above the second heating cylinder, there is a second roll bubble rack. At the top of the second heating cylinder at the bottom of the second roll bubble rack, there is a fixing ring, and a plurality of thickness detectors are arranged on the fixing ring. The plurality of thickness detectors are evenly arranged along the circumference of the fixing ring.

3. The anti-rolling mechanism for the strong cross-membrane stretching equipment according to claim 2, characterized in that, Inside the first heating cylinder, there are multiple groups of heating mechanisms from top to bottom. Each group of heating mechanisms has multiple heating zones, and the multiple heating zones are evenly arranged along the circumference of the first heating cylinder. Each heating zone in multiple groups of heating mechanisms is respectively connected to a temperature regulator, and the number of heating zones in each group of heating mechanisms is the same as the number of thickness detectors.

4. The anti-rolling mechanism for the high-strength cross-film stretching equipment according to claim 3, characterized in that, In each heating zone, there are multiple heating sheets, and the multiple heating sheets in each heating zone are commonly connected to the same temperature regulator.

5. The anti-rolling mechanism for the high-strength cross-membrane stretching equipment according to claim 3, characterized in that, There are four groups of heating mechanisms, and each group of heating mechanisms has eight heating zones. There are eight thickness detectors.

6. The anti-rolling mechanism for the high-strength cross-membrane stretching equipment according to claim 1, characterized in that, Below the first upper traction mechanism at the top of the first heating cylinder, there is a first roll bubble rack. Between the stretching mechanism and the anti-rolling mechanism, there are an upper transmission roller and a lower transmission roller arranged vertically. The setting position of the upper transmission roller is adapted to that of the second upper traction mechanism, and the setting position of the lower transmission roller is adapted to that of the first lower traction mechanism.

7. The anti-rolling mechanism for the strong cross-membrane stretching equipment according to claim 1, characterized in that, Below the first heating cylinder and the second heating cylinder, there are herringbone plates respectively. The first lower traction mechanism and the second lower traction mechanism are respectively located at the bottoms of the two herringbone plates.

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