A fixing device for film transverse stretching

Abstract

The utility model relates to the technical field of film processing, and disclose a kind of fixed device for film transverse stretching, including mounting seat, the both sides of the top of mounting seat are provided with side plate, clamping mechanism is provided on the mounting seat, the clamping mechanism includes electromagnet and single-chip microcontroller, the electromagnet is installed in the inside of mounting seat, the single-chip microcontroller is set on mounting seat, and electromagnet electrically connected. The utility model gradually reduces the current of electromagnet by single-chip microcontroller control, makes upper pressing plate from front to back in turn loosen, let the film edge region originally fixed by fixture can gradually participate in stretching, reduce the part that needs to be cut due to fixed and cannot stretch, reduce waste production, improve film effective utilization.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing technology, specifically to a fixing device for transverse stretching of thin films. Background Technology

[0002] In the field of thin film processing technology, stretching thin films is a key process for improving their performance and expanding their application scenarios. During the transverse stretching of thin films, to ensure that the film does not slip or wrinkle during stretching, the film edges need to be fixed by clamps on both sides. Traditional clamping fixtures mostly use mechanical clamping methods, with the upper and lower pressure plates tightly interlocking to firmly fix the film edges.

[0003] However, this fixing method has significant drawbacks: the two ends of the film fixed by the clamp remain in a rigid constraint state during the stretching process and cannot deform with the stretching force, making this area an ineffective stretching zone. After stretching, in order to ensure the flatness and dimensional accuracy of the film body, the fixed areas at both ends must be cut off, thus affecting the utilization rate of the film. Therefore, a film transverse stretching fixing device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a fixing device for transverse stretching of thin films, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a fixing device for transverse stretching of a thin film, including a mounting base, side plates provided on both sides of the top of the mounting base, a clamping mechanism provided on the mounting base, the clamping mechanism including an electromagnet and a microcontroller, the electromagnet being installed inside the mounting base, and the microcontroller being disposed on the mounting base and electrically connected to the electromagnet.

[0006] Preferably, an insulating plate is fixedly connected to the inner wall of the mounting base, and the microcontroller is mounted on the bottom of the insulating plate.

[0007] Preferably, a fixing seat is installed on the inner side of the side plate, the bottom of the fixing seat is provided with a movable groove, the top of the inner wall of the movable groove is connected with a spring, the other end of the spring is connected with a connecting rod, and the bottom of the connecting rod is connected with an upper pressure plate, and the top of the mounting seat is provided with a lower pressure plate.

[0008] Preferably, the movable groove is provided in two sets, with multiple movable grooves in each set, and the depth of the multiple movable grooves increases sequentially from front to back.

[0009] Preferably, the mounting base is provided with a heat dissipation mechanism, which includes a mounting groove, heat dissipation holes and a screen. The mounting groove is opened on both sides of the mounting base, the heat dissipation holes are opened on the inner wall of the mounting groove and communicate with the inner wall of the mounting base, and the screen is installed inside the mounting groove.

[0010] Preferably, the top of the insulating plate is provided with guide plates, and the number of guide plates is several, which are distributed at equal intervals on the top of the insulating plate.

[0011] The present invention adopts the above technical solution, which can bring the following beneficial effects: 1. This film transverse stretching fixing device uses a microcontroller to control the electromagnet current to gradually decrease, causing the upper pressure plate to loosen sequentially from front to back. This allows the edge area of ​​the film that was originally fixed by the clamp to gradually participate in the stretching, reducing the portion that needs to be cut due to fixation, reducing waste generation, and improving the effective utilization rate of the film.

[0012] 2. This film transverse stretching fixing device, by setting movable grooves with progressively increasing depths from front to back, and cooperating with springs of the same type, ensures that the spring elongation increases progressively from front to back, thereby ensuring that the elastic force increases progressively from front to back. Thus, with the cooperation of electromagnets, the upper pressure plate can be released in an orderly manner from front to back. By setting an insulating plate, the electromagnetic interference generated when the electromagnet is working can be avoided from affecting the operation of the microcontroller. With the help of infrared sensors connected to the microcontroller, the electromagnet attraction force can be dynamically adjusted according to the position of the film in the stretching machine, so that the release time of the upper pressure plate is precisely matched with the stretching process, improving the automation level and control accuracy of the device.

[0013] 3. This kind of fixing device for transverse stretching of film can avoid the electromagnetic interference generated by the electromagnet during operation from affecting the operation of the microcontroller by setting an insulating plate; the heat dissipation mechanism guides the airflow to the electromagnet through heat dissipation holes that are consistent with the moving direction of the mounting base, combined with guide plates, effectively dissipating the heat generated by film stretching. At the same time, the screen can prevent impurities from blocking the heat dissipation holes, ensuring the stable operation of the electromagnet and the entire device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the bottom of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 This is a schematic diagram of the mounting base of this utility model; Figure 5 This is a partial schematic diagram of the clamping mechanism of this utility model.

[0015] In the diagram: 1. Mounting base; 2. Side plate; 3. Clamping mechanism; 31. Electromagnet; 32. Insulating plate; 33. Microcontroller; 34. Fixed base; 35. Movable slot; 36. Spring; 37. Connecting rod; 38. Upper pressure plate; 39. Lower pressure plate; 4. Heat dissipation mechanism; 41. Mounting slot; 42. Heat dissipation hole; 43. Barrier net; 44. Guide plate; 5. Mounting hole. Detailed Implementation

[0016] 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 protection scope of the present utility model.

[0017] Please see Figure 1-5 One embodiment of this utility model is: a fixing device for transverse stretching of film, including a mounting base 1, the top of the mounting base 1 is provided with a mounting hole 5, the mounting hole 5 is provided to facilitate the mounting base 1 to be installed on the chain of the transverse stretching machine of film, the top two sides of the mounting base 1 are provided with side plates 2, and the mounting base 1 is provided with a clamping mechanism 3.

[0018] The clamping mechanism 3 includes an electromagnet 31 and a microcontroller 33. The electromagnet 31 is installed inside the mounting base 1, and the microcontroller 33 is mounted on the mounting base 1 and electrically connected to the electromagnet 31. An infrared sensor is installed at the rear of the stretching zone of the film transverse stretching machine. The infrared sensor is connected to the microcontroller 33. The microcontroller 33 moves on the chain with the mounting base 1. When the infrared sensor detects the microcontroller 33, it adjusts the current flowing through the electromagnet 31, thereby adjusting the magnetic force of the electromagnet 31.

[0019] An insulating plate 32 is fixedly connected to the inner wall of the mounting base 1. The microcontroller 33 is installed below the insulating plate 32. The insulating plate 32 is used to prevent electromagnetic interference generated by the electromagnet 31 during operation of the microcontroller 33. A fixed base 34 is installed on the inner side of the side plate 2. A movable groove 35 is opened at the bottom of the fixed base 34. A spring 36 is connected to the top of the inner wall of the movable groove 35. The other end of the spring 36 is connected to a connecting rod 37. The connecting rod 37 is slidably connected to the inner wall of the movable groove 35. By sliding the connecting rod 37 to the inner wall of the movable groove 35, the upper pressure plate 38 can be guided, so that the upper pressure plate 38 is vertically upright and will not shift, thus affecting the fixing effect. The bottom of the connecting rod 37 is connected to an upper pressure plate 38, which is made of ferrite permanent magnet material and has good mechanical strength and high temperature resistance. It can be attracted by the electromagnet 31. The top of the mounting base 1 is provided with a lower pressure plate 39. The opposite surfaces of the upper pressure plate 38 and the lower pressure plate 39 are provided with elastic rubber blocks. The elastic rubber blocks are used to improve the stability of clamping. There are two sets of movable slots 35, and each set has five movable slots 35. The depth of the five movable slots 35 increases from front to back. The springs 36 in each movable slot 35 are all of the same type. By using the same type of springs 36, it can be ensured that the greater the elongation of the spring 36, the greater the elastic force, and they are directly proportional.

[0020] Working principle: Mounting base 1 is installed on the chain of the film transverse stretching machine through mounting hole 5.

[0021] When the film needs to be stretched, both ends of the film are fixed between the upper pressure plate 38 and the lower pressure plate 39. By energizing the electromagnet 31, it generates a magnetic force that attracts the upper pressure plate 38, causing it to descend and fix the film ends. At this time, the springs 36 connected to the upper pressure plate 38 are in a stretched state. The elongation of the five springs 36 from front to back increases sequentially. When the mounting base 1 moves with the chain to the stretching area of ​​the film transverse stretching machine, it stretches the film. When it moves to the rear end, the infrared sensor detects the microcontroller 33, which then controls the current of the electromagnet 31, gradually reducing the current to the lower pressure plate 39, thus causing the electromagnet 39 to relax its magnetic force on the upper pressure plate 38. The attraction of plate 38 gradually decreases. When the attraction of electromagnet 31 to upper pressure plate 38 is less than the elastic force of spring 36, the upper pressure plate 38 will rise under the action of spring 36. The elastic force of the five springs 36 increases sequentially from front to back. After the foremost upper pressure plate 38 rises, the other four upper pressure plates 38 still clamp the film. At this time, the mounting base 1 moves in the stretching zone of the film transverse stretching machine and stretches the film part clamped by the foremost upper pressure plate 38. This is repeated until the fourth upper pressure plate 38 separates from the film. At this time, the film parts fixed by the four upper pressure plates 38 are all stretched, thereby reducing the part of the film that cannot be stretched due to fixation and cutting, and improving the utilization efficiency of the film.

[0022] Please see Figure 1-5 Based on the above embodiments, in another embodiment of the present invention, a heat dissipation mechanism 4 is provided on the mounting base 1. The heat dissipation mechanism 4 includes a mounting groove 41, heat dissipation holes 42 and a mesh 43. The mounting groove 41 is opened on both sides of the mounting base 1. The heat dissipation holes 42 are opened on the inner wall of the mounting groove 41 and communicate with the inner wall of the mounting base 1. The direction of the heat dissipation holes 42 is consistent with the moving direction of the mounting base 1, so that the heat dissipation effect of the heat dissipation holes 42 can be improved when the mounting base 1 moves. The mesh 43 is installed inside the mounting groove 41. A guide plate 44 is provided on the top of the insulating plate 32. The number of guide plates 44 is several, and the several guide plates 44 are distributed at equal intervals on the top of the insulating plate 32.

[0023] Working principle: During the stretching process, the film first passes through the preheating zone and then enters the stretching zone. At the same time, the film generates heat due to deformation during stretching, which is transferred to the electromagnet 31 and affects it. By setting heat dissipation holes 42, external airflow can directly enter the interior of the mounting base 1 through the heat dissipation holes 42 during the movement of the mounting base 1. Then, the airflow is guided to the electromagnet 31 by the guide plate 44 to dissipate heat from the electromagnet 31 and prevent the temperature from affecting the normal use of the electromagnet 31. At the same time, a barrier net 43 is set on the outside of the heat dissipation holes 42 to intercept impurities and prevent the heat dissipation holes 42 from being blocked, thus affecting the heat dissipation effect.

[0024] This utility model provides a fixing device for transverse stretching of a thin film. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A fixing device for transverse stretching of a thin film, comprising a mounting base (1), characterized in that: Side plates (2) are provided on both sides of the top of the mounting base (1). A clamping mechanism (3) is provided on the mounting base (1). The clamping mechanism (3) includes an electromagnet (31) and a microcontroller (33). The electromagnet (31) is installed inside the mounting base (1). The microcontroller (33) is installed on the mounting base (1) and is electrically connected to the electromagnet (31).

2. The fixing device for transverse stretching of a thin film according to claim 1, characterized in that: An insulating plate (32) is fixedly connected to the inner wall of the mounting base (1), and the microcontroller (33) is installed at the bottom of the insulating plate (32).

3. The fixing device for transverse stretching of a thin film according to claim 2, characterized in that: A fixed seat (34) is installed on the inner side of the side plate (2). A movable groove (35) is opened at the bottom of the fixed seat (34). A spring (36) is connected to the top of the inner wall of the movable groove (35). A connecting rod (37) is connected to the other end of the spring (36). An upper pressure plate (38) is connected to the bottom of the connecting rod (37). A lower pressure plate (39) is provided on the top of the mounting base (1).

4. The fixing device for transverse stretching of a film according to claim 3, characterized in that: The movable slots (35) are provided in two sets, and each set has multiple movable slots (35). The depth of the multiple movable slots (35) increases sequentially from front to back.

5. A film transverse stretching fixing device according to claim 4, characterized in that: The mounting base (1) is provided with a heat dissipation mechanism (4), which includes a mounting groove (41), a heat dissipation hole (42) and a screen (43). The mounting groove (41) is opened on both sides of the mounting base (1), the heat dissipation hole (42) is opened on the inner wall of the mounting groove (41) and communicates with the inner wall of the mounting base (1), and the screen (43) is installed inside the mounting groove (41).

6. A fixing device for transverse stretching of a thin film according to claim 5, characterized in that: The top of the insulating plate (32) is provided with guide plates (44), and there are several guide plates (44) arranged at equal intervals on the top of the insulating plate (32).

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