Thin film transverse stretching device

Abstract

The utility model belongs to the technical field of film production equipment, and relates to a transverse film stretching device which comprises a TDO chain provided with a TDO chain clip, the TDO chain clip is composed of a movable clip and a fixed clip, and a high-pressure tuyere is arranged on the outer side of a non-working area of the TDO chain; an air outlet of the high-pressure tuyere is over against openings of the movable clip and the fixed clip; an air inlet of the high-pressure air nozzle is connected with a high-pressure fan through an air blowing pipe; an oil collecting pipe is arranged under the openings of the movable clip and the fixed clip; the lower end of the oil collecting pipe is connected with an air suction fan through an air suction pipe. The device disclosed by the utility model can realize on-line cleaning of chain clip greasy dirt, prevents the chain clip greasy dirt from polluting a film surface, and improves the film quality and the production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of film production equipment and relates to a film transverse stretching device. Background Technique

[0002] The transverse stretching process of the film is realized by the chain clips of the TDO production line clamping the edges of the film and applying a transverse stretching force. To ensure the smooth operation of the chain clips, extend their service life, and reduce the running noise, the lubrication system of the TDO production line continuously replenishes lubricating oil for the chain clips for 24 hours without interruption. However, during the long-term production process, oil stains gradually accumulate on the chain clips. If not cleaned in time, these oil stains will not only contaminate the film but may also cause the lubricating oil to adhere to the clip openings, resulting in the film being easily detached from the clips during the stretching process, thereby triggering the risk of film breakage. More seriously, the lubricating oil liquid at the clip openings may be thrown onto the film surface during operation, causing oil stain defects on the film surface, significantly reducing the quality of the film, and making it unable to meet the established production standards. Therefore, it is crucial to regularly clean and maintain the chain clips.

[0003] At present, for the cleaning work of the oil stains on the chain clips, the main method is to clean the surface of the chain clips one by one manually after the machine stops and cools down. However, due to the large number of chain clips (often reaching thousands), this method is not only time-consuming and laborious, reducing production efficiency, but also difficult to ensure that each chain clip can be thoroughly cleaned. To overcome this problem, some cleaning devices for accelerating the cleaning speed of the chain clips have emerged in the prior art. For example, Patent CN218049396U discloses a cleaning device for cigarette film production chain clips, including a U-shaped plate, a first cleaning unit, and a second cleaning unit; U-shaped plate: an electric telescopic rod is arranged in the installation opening provided in the middle of its upper surface; First cleaning unit: including a shunt box, high-pressure nozzles, an air extractor, and a transmission pipe. The shunt box is arranged at the lower end surface of the telescopic end of the electric telescopic rod, and high-pressure nozzles are arranged at the air outlet openings evenly arranged on the lower end surface of the shunt box. An air extractor is arranged on the right end of the upper surface of the U-shaped plate through a mounting seat, and a transmission pipe is arranged at the air outlet of the air extractor. The transmission pipe passes through the through hole provided on the top wall surface of the inner cavity of the U-shaped plate and is connected to the air inlet provided on the outer arc surface of the shunt box; Second cleaning unit: rotatably connected to the bottom end of the telescopic end of the electric telescopic rod; Among them: a control switch group is also included. This cleaning device for cigarette film production chain clips enables the chain clips to be cleaned without dead corners when being cleaned, effectively removing the stains on the chain clips. Although this device can reduce the time spent on cleaning the chain clips to a certain extent, it cannot achieve the purpose of on-line cleaning. The chain clips still need to be cleaned after the machine stops, and the chain clips need to be removed and cannot be directly cleaned on the equipment.

[0004] In view of the above problems, there is an urgent need to develop a new type of equipment at present to solve the deficiencies of the existing cleaning methods and improve production efficiency. Content of the Utility Model

[0005] To solve the problems existing in the prior art, the present utility model provides a film transverse stretching device;

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0007] A film transverse stretching device includes a TDO chain with TDO chain clips installed thereon. The TDO chain clip is composed of a movable clip and a fixed clip. A high-pressure air nozzle is arranged on the outer side of the non-working area of the TDO chain; as Figure 7 shown, the working area refers to the area on the advancing TDO chain that clamps the film (inner working area), and the non-working area refers to the area on the advancing TDO chain that does not clamp the film (outer non-working area);

[0008] The air outlet of the high-pressure air nozzle faces the opening between the movable clip and the fixed clip;

[0009] The air inlet of the high-pressure air nozzle is connected to a high-pressure air blower through an air blowing pipe;

[0010] A collecting oil pipe is arranged directly below the opening between the movable clip and the fixed clip. The lower end of the collecting oil pipe is connected to a suction air blower through a suction air pipe.

[0011] As a preferred technical solution:

[0012] For the film transverse stretching device as described above, the number of high-pressure air nozzles is n, n≥1, and n high-pressure air nozzles are arranged horizontally at intervals. A flow dividing box is arranged between the n high-pressure air nozzles and the air blowing pipe. The flow dividing box is a horizontally placed flat funnel-shaped structure. The narrow end of the flow dividing box is communicated with the air blowing pipe, and the wide end of the flow dividing box is connected to the n high-pressure air nozzles.

[0013] For the film transverse stretching device as described above, the air blowing pipe is composed of a horizontal pipe a, an elbow a, a vertical pipe, an elbow b, and a horizontal pipe b connected in sequence;

[0014] The air inlet of the horizontal pipe a is connected to the high-pressure air blower, and the air outlet of the horizontal pipe b is connected to the narrow end of the flow dividing box.

[0015] For the film transverse stretching device as described above, it further includes an air pipe bracket, and the air pipe bracket is located below the horizontal pipe a and fits with it.

[0016] For the film transverse stretching device as described above, the air blowing pipe, the collecting oil pipe, and the suction air pipe are all Teflon pipes. The temperature in the TDO area is relatively high, about 50 - 60 °C, and using Teflon pipes is not easy to age and crack.

[0017] For the film transverse stretching device as described above, the high-pressure air nozzle is a flat-shaped blowing nozzle.

[0018] A film transverse stretching device as described above, the oil collecting pipe is a flat funnel-shaped structure placed vertically, the wide mouth end of the oil collecting pipe is located below the openings of the movable clamp and the fixed clamp, and the narrow mouth end is communicated with the air suction pipe.

[0019] A film transverse stretching device as described above, a oil filtering device is arranged between the air suction pipe and the air suction fan, and a filter screen is detachably arranged inside the oil filtering device to prevent oil stains and impurities from entering the air suction fan.

[0020] A film transverse stretching device as described above, a valve is connected to the outside of the oil filtering device, and the accumulated oil stains can be discharged by opening the valve.

[0021] Beneficial effects:

[0022] (1) By arranging high-pressure nozzles on the outer side of the non-working area of the TDO chain in the present utility model, and making the air outlet of the high-pressure nozzles face the openings of the movable clamp and the fixed clamp, the oil stains at the clamp openings can be blown away from the chain clamps during the production process, and the oil collecting pipe arranged below the chain clamps is used to quickly collect the blown-off oil stains to avoid secondary pollution. The high-pressure nozzles and the oil collecting pipe cooperate with one blowing and one sucking to realize online cleaning of the oil stains on the TDO chain clamps;

[0023] (2) The present utility model also arranges an oil filtering device and a valve between the air suction pipe and the air suction fan, and the valve can be opened at any time to discharge the collected oil stains to avoid damaging the air suction fan;

[0024] (3) The film transverse stretching device of the present utility model adds a simple-structured oil stain removing device to the existing TDO production line, which can realize online removal of oil stains on the chain clamps, greatly saving manpower and time and improving production efficiency. Description of the drawings

[0025] Figure 1 It is a partial structural schematic diagram of the film transverse stretching device of the present utility model;

[0026] Figure 2 It is a partial side view when the film transverse stretching device of the present utility model is in use;

[0027] Figure 3 It is a schematic diagram of the position of the high-pressure nozzle and the TDO chain clamp of the present utility model;

[0028] Figure 4 It is a schematic diagram of the flow direction of the high-pressure air flow after being ejected from the high-pressure nozzle of the present utility model. In the figure, the arrow is the air flow direction;

[0029] Figure 5 It is a structural schematic diagram of a kind of high-pressure nozzle of the present utility model;

[0030] Figure 6This is a schematic structural diagram of the oil filter device of the present utility model. In the figure, the arrow in the air suction pipe indicates the air flow direction;

[0031] Figure 7 This is a schematic diagram of the overall structure of the film transverse stretching device of the present utility model;

[0032] Among them, 1 - high-pressure blower, 2 - air blowing pipe, 3 - air pipe bracket, 4 - movable clamp, 5 - high-pressure air nozzle, 6 - air suction pipe, 7 - fixed clamp, 8 - oil filtering device, 9 - valve, 10 - air suction blower, 11 - TDO chain with TDO clamps installed, 12 - shunt box, 13 - oil collecting pipe, 15 - filter screen. Specific embodiments

[0033] The following further elaborates on the present utility model in combination with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In the embodiments, the orientation terms such as "front", "rear", "left", "right", "upper", and "lower" are only for convenient description based on the drawings and do not mean that the structure of the present utility model must be set like this. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0034] A film transverse stretching device, as Figure 1 、 Figure 2 shown, includes a high-pressure blower 1, an air blowing pipe 2, an air pipe bracket 3, a shunt box 12, a high-pressure air nozzle 5, a TDO chain 11 with TDO clamps installed, an oil collecting pipe 13, an air suction pipe 6, an oil filtering device 8, a valve 9 and an air suction blower 10;

[0035] The air blowing pipe 2 is composed of a horizontal pipe a, an elbow a, a vertical pipe, an elbow b and a horizontal pipe b connected in sequence;

[0036] The air pipe bracket 3 is located below and in contact with the horizontal pipe a;

[0037] The TDO clamp is composed of a movable clamp 4 and a fixed clamp 7;

[0038] As Figure 5 shown, the high-pressure air nozzle 5 is a flat air blowing nozzle; the number of high-pressure air nozzles 5 is n, n≥1, and n high-pressure air nozzles 5 are arranged on the outside of the non-working area of the TDO chain, and the n high-pressure air nozzles 5 are arranged horizontally at intervals; as Figure 3 、 Figure 4 shown, the air outlets of the n high-pressure air nozzles 5 face the openings of the movable clamp 4 and the fixed clamp 7;

[0039] The flow splitter box 12 is a horizontally placed flat funnel-shaped structure; the wide-mouth end of the flow splitter box 12 is connected to the air inlets of n high-pressure air nozzles 5, the narrow-mouth end of the flow splitter box 12 is connected to the air outlet of the horizontal pipe b, and the air inlet of the horizontal pipe a is connected to the high-pressure air blower 1;

[0040] As Figure 1 , the oil collecting pipe 13 is a vertically placed flat funnel-shaped structure, the wide-mouth end of the oil collecting pipe 13 is located below the openings of the movable clamp 4 and the fixed clamp 7, the narrow-mouth end is connected to one end of the air suction pipe 6, and the other end of the air suction pipe 6 is connected to the air suction fan 10 through the oil filtering device 8;

[0041] Figure 6 As shown, a filter screen 15 is detachably arranged inside the oil filtering device 8, and a valve 9 is connected to the outside;

[0042] The air blowing pipe 2, the oil collecting pipe 13 and the air suction pipe 6 are all made of Teflon pipes.

Claims

1. A film transverse stretching device, comprising a TDO chain (11) equipped with TDO chain clips, and the TDO chain clips are composed of movable clips (4) and fixed clips (7), characterized in that, A high-pressure air nozzle (5) is arranged on the outer side of the non-working area of the TDO chain; The air outlet of the high-pressure air nozzle (5) faces the openings of the movable clamp (4) and the fixed clamp (7); The air inlet of the high-pressure air nozzle (5) is connected to a high-pressure air blower (1) through an air blowing pipe (2); An oil collecting pipe (13) is arranged directly below the openings of the movable clamp (4) and the fixed clamp (7), and the lower end of the oil collecting pipe (13) is connected to an air suction blower (10) through an air suction pipe (6).

2. The transverse stretching device for thin film according to claim 1, wherein The number of high-pressure air nozzles (5) is n, where n≥1. The n high-pressure air nozzles (5) are arranged horizontally at intervals. A flow distribution box (12) is arranged between the n high-pressure air nozzles (5) and the air blowing pipe (2). The flow distribution box (12) is a horizontally placed flat funnel-shaped structure. The narrow end of the flow distribution box (12) is communicated with the air blowing pipe (2), and the wide end of the flow distribution box (12) is connected to the n high-pressure air nozzles (5).

3. The transverse stretching device for thin films according to claim 2, characterized in that, The air blowing pipe (2) is successively composed of a horizontal pipe a, an elbow a, a vertical pipe, an elbow b, and a horizontal pipe b; The air inlet of the horizontal pipe a is connected to the high-pressure air blower (1), and the air outlet of the horizontal pipe b is connected to the narrow end of the flow distribution box (12).

4. The transverse stretching device for thin films according to claim 3, wherein It further includes an air pipe bracket (3), and the air pipe bracket (3) is located below the horizontal pipe a and is in contact with it.

5. A film transverse stretching device according to claim 1, characterized in that, The air blowing pipe (2), the oil collecting pipe (13), and the air suction pipe (6) are all Teflon pipes.

6. The transverse stretching device for a film according to claim 1, characterized in that, The high-pressure air nozzle (5) is a flat-shaped air blowing nozzle.

7. A film transverse stretching device according to claim 1, characterized in that, The oil collecting pipe (13) is a vertically placed flat funnel-shaped structure. The wide end of the oil collecting pipe (13) is located below the openings of the movable clamp (4) and the fixed clamp (7), and the narrow end is communicated with the air suction pipe (6).

8. A film transverse stretching device according to claim 1, characterized in that, A oil filtering device (8) is arranged between the air suction pipe (6) and the air suction blower (10), and a filter screen (15) is detachably arranged inside the oil filtering device (8).

9. A film transverse stretching device according to claim 8, characterized in that, A valve (9) is connected to the outside of the oil filtering device (8).

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