A film heat resistance detection device

Abstract

The utility model belongs to film manufacturing technical field, concretely relates to a kind of film heat resistance detection device, including base, mobile module, module support, contact type pressure sensor, L-shaped connecting plate, detection cylinder, heating cover and mobile support;The mobile module is fixed on the base by the module support, and the module support between adjacent is passed for film;The mobile support is installed in the movable end of the mobile module, and the heating cover is fixed on the mobile support;The detection cylinder is fixed on one side of the mobile support, and its piston rod is connected with the L-shaped connecting plate, the contact type pressure sensor is installed on the L-shaped connecting plate, and the lower end of the contact type pressure sensor is provided with conical detection head.This device improves detection efficiency and accuracy significantly through automatic structure design.

Description

Technical Field

[0001] This utility model belongs to the field of thin film manufacturing technology, and specifically relates to a thin film heat resistance testing device. Background Technology

[0002] In the field of thin film production, the heat resistance of thin films is a key quality indicator, and there is an urgent need for heat resistance testing of thin films in current technologies. Traditional testing methods involve heating the film with a heating device, followed by manual pressure applied to the film with fingers, subjectively assessing heat resistance based on how easily the fingers can penetrate. This method relies on manual operation, resulting in low testing efficiency. Furthermore, the results are greatly influenced by the operator's experience and the force applied, leading to poor accuracy. It also fails to quantify the maximum pressure the film can withstand, lacks scientific basis, and is insufficient to meet the quality control requirements of large-scale industrial production.

[0003] While some existing testing equipment attempts to incorporate mechanical pressure, it suffers from problems such as separation of heating and pressure application, insufficient pressure detection accuracy, and incompatibility with multiple production lines. For example, traditional equipment typically performs single-film, single-test operation, requiring manual recording of pressure data, resulting in low automation and difficulty in achieving full-process automation of heating, pressure application, and data recording. Therefore, developing a heat resistance testing device that can automatically heat, accurately detect pressure, and efficiently process films from multiple production lines has become an urgent technical challenge in this field. Utility Model Content

[0004] The purpose of this invention is to provide a thin film heat resistance testing device to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A thin film heat resistance testing device includes a base, a movable module, a module support, a contact pressure sensor, an L-shaped connecting plate, a testing cylinder, a heating cover, and a movable support. The movable module is fixed to the base via the module support, and a thin film can pass between adjacent module supports. The movable support is installed at the movable end of the movable module, and the heating cover is fixed to the movable support. The testing cylinder is fixed to one side of the movable support, and its piston rod is connected to the L-shaped connecting plate. The contact pressure sensor is installed on the L-shaped connecting plate, and a conical testing head is installed at the lower end of the contact pressure sensor.

[0007] Preferably, the moving module can drive the moving bracket to move in the direction perpendicular to the film conveying direction, so that the heating cover and the conical detection head sequentially heat and pressure test different detection positions of the film.

[0008] Preferably, the heating cover is a temperature-adjustable constant-temperature heating structure used to uniformly heat the film at a preset temperature.

[0009] Preferably, the contact pressure sensor is electrically connected to an external control system, which can provide real-time feedback on the pressure value applied to the film by the conical detection head, and record the maximum pressure value when the conical detection head penetrates the film.

[0010] Preferably, the module support is configured as a multi-group parallel structure, which can simultaneously accommodate the passage of films from two or more film production lines, and realize multi-line synchronous testing.

[0011] The beneficial effects of this invention are as follows: This device significantly improves detection efficiency and accuracy through its automated structural design. The heating shroud can uniformly heat the film at a preset temperature. When the detection cylinder drives the conical detection head to press down on the film, the contact pressure sensor provides real-time feedback on the pressure value and records the maximum pressure that penetrates the film. This achieves full automation of the heating, pressurization, and data acquisition process, avoiding subjective errors in manual detection and making the detection results more scientific and reliable.

[0012] The device's moving module can drive the heating cover and detection head to move along the film conveying direction, enabling precise detection at different positions. Multiple sets of parallel module supports can be compatible with more than two film production lines simultaneously, supporting multi-line synchronous detection. Compared with the traditional single-line detection mode, this significantly improves detection efficiency, meets the quality control requirements of large-scale industrial production, and provides an innovative solution for the efficient detection of film heat resistance. Attached Figure Description

[0013] Figure 1 This is the front view of this utility model;

[0014] Figure 2 This is a side view of the present invention. Detailed Implementation

[0015] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0016] like Figure 1 As shown, a thin film heat resistance testing device mainly consists of a base 1, a movable module 2, a module support 3, a contact pressure sensor 4, an L-shaped connecting plate 5, a testing cylinder 6, a heating cover 7, and a movable support 8. These components are mechanically connected to form an integrated testing system.

[0017] The base 1 serves as the basic support structure of the device. It is made of metal (such as aluminum alloy or steel) and has mounting holes on its surface for fixing the module bracket 3 and the movable module 2.

[0018] The movable module 2 is preferably a linear guide rail module or a lead screw module, which is fixed above the base 1 by a module bracket 3. The module bracket 3 has a "door" shaped structure, with its bottom bolted to the base 1 and its top crossbeam used to support the fixed end of the movable module 2. An adjustable-width channel is formed between adjacent module brackets 3, allowing the diaphragm 9 to pass through and maintain a horizontal tension.

[0019] The movable support 8 is installed at the movable end of the movable module 2 (such as a guide rail slider or lead screw nut), and can move back and forth in a direction perpendicular to (laterally) the conveying direction of the film 9. The heating cover 7 is fixed to the top of the movable support 8 by bolts, and its bottom opening faces the film 9. The heating element (such as a resistance wire or heating tube) is integrated inside.

[0020] The detection cylinder 6 is vertically fixed to one side of the movable support 8 (e.g., the right side), and the cylinder piston rod extends downward and connects to the L-shaped connecting plate 5. A contact pressure sensor 4 is mounted on the horizontal section of the L-shaped connecting plate 5, and its lower end is connected to a conical detection head 10 (preferably with a tip angle of 30°-60° to ensure the stability of the puncture force) via threads or snap-fit. The contact pressure sensor 4 is connected to an external control system (such as a PLC or industrial computer) via a cable to transmit pressure data in real time.

[0021] II. Work Process and Detection Principle

[0022] Thin film positioning and heating:

[0023] The film 9 to be tested enters the channel between adjacent module supports 3 via guide rollers, and is kept horizontally taut.

[0024] The moving module 2 drives the moving bracket 8 to move above the position of the film 9 to be tested. The heating cover 7 descends to be close to the surface of the film 9 (the distance can be adjusted by a cylinder or electric push rod), and the heating function is activated to heat the film 9 to the preset temperature (such as 120℃ or adjusted according to the film material) and maintain the temperature for a period of time (such as 30 seconds) so that the film 9 is fully heated.

[0025] After heating is complete, the piston rod of the detection cylinder 6 extends downward, pushing the L-shaped connecting plate 5 and the conical detection head 10 to vertically press down on the diaphragm 9. The contact pressure sensor 4 monitors and provides feedback on the pressure value applied to the diaphragm 9 in real time, and this data is simultaneously displayed on the human-machine interface (such as a touch screen) of the external control system.

[0026] As the conical detection head 10 continues to press down, the pressure value gradually increases. When the membrane 9 is perforated (i.e., the conical detection head pierces the membrane), the pressure value drops sharply. At this moment, the contact pressure sensor 4 triggers the peak hold function, records and saves the maximum pressure value at the moment of perforation, and simultaneously sends a detection completion signal to the control system.

[0027] Result Interpretation and Automated Processing:

[0028] The control system is preset with standard pressure thresholds for different membrane materials (e.g., the minimum pressure a qualified product must withstand is 50N). After the test is completed, the system automatically compares the recorded maximum pressure value with the standard threshold.

[0029] If the maximum pressure value is greater than or equal to the threshold, the heat resistance of the membrane at that test point is deemed to be qualified. The control system will issue a qualified signal through an indicator light (such as a green LED) or an audible and visual alarm device and store the data in the database.

[0030] If the maximum pressure value is less than the threshold, it is judged as unqualified. The control system triggers an alarm (such as a flashing red warning light and a buzzer sounding), and a label or mark is affixed to the unqualified film position by a robotic arm or pneumatic device to facilitate subsequent manual removal or rework.

[0031] Multi-location detection and multi-line compatibility:

[0032] During single-film testing, the moving module 2 drives the moving bracket 8 to move along the film conveying direction (lateral), so that the heating cover 7 and the conical detection head 10 sequentially perform cyclic heating and pressure testing on multiple detection points of the film (e.g., testing once every 10cm), avoiding the randomness of single-point testing.

[0033] When inspecting multiple film production lines (such as 2-4 films being transported in parallel), multiple sets of parallel module supports 3 are set up, with each set of module supports corresponding to one film channel. The moving module 2 can synchronously drive multiple moving supports (or integrated moving supports) to simultaneously inspect multiple films, significantly improving inspection efficiency.

[0034] 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 scope of protection of this utility model.

Claims

1. A thin film heat resistance testing device, characterized in that, The device includes a base (1), a movable module (2), a module bracket (3), a contact pressure sensor (4), an L-shaped connecting plate (5), a detection cylinder (6), a heating cover (7), and a movable support (8). The movable module (2) is fixed to the base (1) via the module bracket (3), and a thin film (9) passes between adjacent module brackets (3). The movable support (8) is installed at the movable end of the movable module (2), and the heating cover (7) is fixed to the movable support (8). The detection cylinder (6) is fixed to one side of the movable support (8), and its piston rod is connected to the L-shaped connecting plate (5). The contact pressure sensor (4) is installed on the L-shaped connecting plate (5), and a conical detection head (10) is installed at the lower end of the contact pressure sensor (4).

2. The thin film heat resistance testing device according to claim 1, characterized in that, The moving module (2) can drive the moving bracket (8) to move in the direction perpendicular to the conveying direction of the film (9), so that the heating cover (7) and the conical detection head (10) can heat and pressure test different detection positions of the film (9) in sequence.

3. The thin film heat resistance testing device according to claim 1, characterized in that, The heating cover (7) is a temperature-adjustable constant-temperature heating structure used to uniformly heat the film (9) at a preset temperature.

4. The thin film heat resistance testing device according to claim 1, characterized in that, The contact pressure sensor (4) is electrically connected to an external control system and can provide real-time feedback on the pressure value applied by the conical detection head (10) to the film (9), and record the maximum pressure value when the conical detection head (10) penetrates the film (9).

5. The thin film heat resistance testing device according to claim 1, characterized in that, The module support (3) is configured with multiple parallel structures, which can simultaneously accommodate the passage of films (9) from two or more film production lines, and realize multi-line synchronous detection.

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