Automobile heat insulation film testing device

Abstract

The invention discloses an automobile heat insulation film testing device, which relates to the technical field of optical testing, and comprises a CCD (Charge Coupled Device) camera for testing a heat insulation film body; the heat insulation film body sequentially passes through the heat exchange rollers, a heat exchange flow channel is formed in each heat exchange roller, and a heat exchange medium circularly flows in each heat exchange flow channel; the belt wheel set comprises a driven wheel coaxially installed on the heat exchange roller and further comprises a plurality of sliding racks capable of sliding in the radial direction of the driven wheel, and the outer end of the belt wheel set is connected with an outer expansion plate. The sliding pipe is communicated with the heat exchange channel, the push plate is connected to one end of the sliding pipe, and when the flow speed of the heat exchange medium circularly flowing in the heat exchange channel is increased, the sliding pipe axially slides along the inner wall of the heat exchange roller. A real-time linkage control function is achieved, it can be ensured that the heat insulation film is always in a stable temperature and conveying condition in the whole production process, and the testing stability and reliability are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical testing, in particular to a testing device for an automobile thermal insulation film. Background Art

[0002] Roughness testing can help understand the microstructure and texture of the thermal insulation film surface. Through CCD camera testing, the impact of these surface characteristics on the performance of the thermal insulation film can be evaluated.

[0003] The performance of thermal insulation film is relatively stable at relatively low temperatures, and it is not easy to deform or otherwise affect the detection. Generally speaking, it is more appropriate to keep the temperature between 15°C and 30°C. For example, within this temperature range, the physical properties of PVC thermal insulation film are relatively stable, and its dimensional change rate is extremely small, so the impact on the accuracy of CCD detection can be ignored. Therefore, when the CCD camera is testing the roughness of the thermal insulation film, the temperature of the thermal insulation film needs to be controlled between 15°C and 30°C. CCD detection within this temperature range can obtain more accurate results.

[0004] The existing method of changing the temperature of the thermal insulation film usually adopts the method of heating with a hot roller, which mainly relies on the high temperature of the surface of the hot roller to directly contact the thermal insulation film and transfer heat to heat its surface to a set temperature.

[0005] However, the precise correlation and control between the heating roller speed and the insulation film temperature is difficult to achieve;

[0006] The speed of the heating roller and the temperature of the heating roller are controlled independently of each other. In a general thermal insulation film production workshop, workers control the speed of the heating roller and the power of the heating element to adjust the temperature through different knobs or buttons on the control panel. There is no direct connection and automatic coordination mechanism between the two. There is a time delay in this process. During this period, the thermal insulation film may have been overheated, and it is difficult to achieve real-time linkage adjustment of the temperature of the thermal insulation film and the speed of the heating roller, and it is impossible to accurately adjust according to the real-time temperature required by the thermal insulation film. This operation method causes large temperature fluctuations of the thermal insulation film. When the speed of the heating roller is too slow, the thermal insulation film may continue to heat up, exceeding its suitable processing temperature range, affecting product quality and production continuity.

[0007] In view of this, this application is hereby filed. Summary of the invention

[0008] The object of the present invention is to provide a vehicle thermal insulation film testing device to solve the problems raised in the above background technology.

[0009] In order to solve the above technical problems, the present invention provides a vehicle thermal insulation film testing device, comprising:

[0010] CCD camera for testing the thermal insulation film body;

[0011] A plurality of heat exchange rollers, wherein the heat insulation film body passes through each of the heat exchange rollers in sequence, and a heat exchange channel is arranged inside each of the heat exchange rollers, and a heat exchange medium circulates in the heat exchange channel;

[0012] The pulley assembly includes a driven wheel coaxially mounted on the heat exchange roller, and also includes a plurality of sliding racks that can slide radially along the driven wheel, and the outer ends of the racks are connected to an outer expansion plate;

[0013] A sliding tube connected to the heat exchange channel and a push plate connected to one end of the sliding tube. When the flow rate of the heat exchange medium circulating in the heat exchange channel increases, the sliding tube slides axially along the inner wall of the heat exchange roller, and the push plate drives the sliding rack to slide radially along the driven wheel to adjust the transmission ratio of the pulley group.

[0014] Furthermore, a fixed inner tube is fixedly installed inside the heat exchange roller, and the inner cavity of the heat exchange roller is divided into a water inlet cavity and a drainage cavity by the fixed inner tube, the fixed inner tube extends along the length direction of the water inlet cavity, the sliding tube seals and slides inside the fixed inner tube, the end of the sliding tube extending to the inside of the fixed inner tube is a closed structure, the other end of the sliding tube extends to the inside of the drainage cavity and is an open structure, a push plate is provided on the open end surface of the sliding tube, the push plate extends along the length direction of the drainage cavity, and an inclined surface is provided on the end of the push plate away from the sliding tube, one end of one of the sliding racks extends to the inside of the drainage cavity and abuts against the surface of the push plate, a first through hole is provided on the side wall of the fixed inner tube, and a second through hole corresponding to the first through hole is provided on the outer wall of the sliding tube.

[0015] Furthermore, a rotating gear meshing with the sliding rack is rotatably mounted inside the driven wheel, and a transmission gear ring meshing with the rotating gear is also rotatably mounted inside the driven wheel.

[0016] Furthermore, a test component is also included, and the test component includes:

[0017] A detection frame, which is fixedly mounted on the top surface of the test frame, the top surface of the detection frame is provided with a translation platform that can slide along its width direction, and the top surface of the translation platform is fixedly mounted with a vertical plate;

[0018] A ball screw is rotatably mounted on the vertical plate, a slide table is threadedly connected thereto, and a servo motor for driving the ball screw to rotate is also mounted on the translation table;

[0019] The adjusting seat is rotatably mounted on the slide, a lens is fixedly mounted on the top surface of the adjusting seat, the lens corresponds to the shooting direction line of the CCD camera, a light source is mounted on the detection frame, the CCD camera is directly opposite to the light source, and the shooting direction line of the CCD camera is outside the detection surface.

[0020] Furthermore, it also includes an upper conveying assembly and a lower conveying assembly, wherein the upper conveying assembly is located above the lower conveying assembly;

[0021] The upper conveying assembly comprises:

[0022] The upper roller body is rotatably mounted on the front side of the heat exchange frame;

[0023] The upper guide roller is rotatably mounted on the rear side of the heat exchange frame;

[0024] An upper tensioning roller, elastically mounted above the heat exchange frame;

[0025] An upper conveyor belt is transmission-connected between the upper roller body, the upper guide roller, the upper tensioning roller and the heat exchange roller, and the upper conveyor belt has the same moving path as the thermal insulation film body;

[0026] The lower conveying assembly comprises:

[0027] The lower roller body is rotatably mounted on the front side of the heat exchange frame;

[0028] The lower guide roller is rotatably mounted on the rear side of the heat exchange frame;

[0029] A lower tensioning roller, elastically mounted above the heat exchange frame;

[0030] A lower conveyor belt is transmission-connected between the lower roller body, the lower guide roller, the lower tension roller and the heat exchange roller, and the lower conveyor belt has the same moving path as the thermal insulation film body;

[0031] The upper conveyor belt, the thermal insulation film body, and the lower conveyor belt are sequentially adhered and overlapped in the heat exchange roller.

[0032] Furthermore, the pulley group includes a driving wheel installed on the heat exchange frame, the driving wheel and the driven wheel are driven by a transmission belt, and a driving motor is also fixedly installed on the side wall of the heat exchange frame; two adjacent heat exchange rollers in the same plane are installed with synchronous wheels, and a synchronous belt is connected between the two opposite synchronous wheels.

[0033] Furthermore, a heat exchange component is also included, and the heat exchange component includes:

[0034] A temperature-controlled water tank is arranged on the side wall of the heat exchange rack, a heat exchange medium is arranged inside the water tank, and a water pump for extracting the heat exchange medium inside the water tank is installed on the water tank;

[0035] A water supply pipe, which is a multi-pass structure, one end of which is connected to the output end of the water pump, and the other ends are respectively connected to one end of the corresponding heat exchange roller;

[0036] The return water pipe is a multi-pass structure, one end of which is connected to the inside of the temperature control water tank, and the other ends are respectively connected to the other end of the corresponding heat exchange roller.

[0037] Furthermore, the thermal insulation film body is bent alternately in different directions on each of the heat exchange rollers; the thermal insulation film body first passes through the heat exchange component and then passes through the test component.

[0038] Furthermore, the test stand comprises:

[0039] A frame, on which a lower transition guide roller and a supporting test roller for winding a thermal insulation film body are arranged, the outer arc surface of the supporting test roller is a detection surface, the lower transition guide roller is rotatably arranged on the side wall of the lower part of the frame, and the supporting test roller is rotatably installed on one side of the top surface of the frame;

[0040] A tensioning roller, which is rotatably mounted on the inner side of the frame and is arranged lower than the supporting test roller;

[0041] The upper transition guide roller is rotatably mounted on the other side of the top surface of the frame, and the upper transition guide roller is symmetrically arranged with the supporting test roller.

[0042] Furthermore, a feeding assembly for unwinding the thermal insulation film body is provided on one side of the test frame, and a receiving assembly for winding the thermal insulation film body is provided on the other side of the test frame;

[0043] The feeding assembly comprises:

[0044] The film feeding frame is arranged at the front side of the frame, on which a front end rotating arm which can rotate along its axial direction is rotatably mounted, and a film feeding roller is mounted on the front end rotating arm, and the heat insulation film body is wound on the film feeding roller;

[0045] The first cylinder is arranged at an angle on the front side of the film delivery frame, one end of which is connected to the outer wall of the front rotating arm, and the other end is rotatably connected to the side wall of the film delivery frame;

[0046] The material receiving component comprises:

[0047] The film collecting frame is arranged at the rear side of the frame, on which a rear end rotating arm which can rotate along its axial direction is rotatably mounted, and a film collecting roller is mounted on the rear end rotating arm, and the thermal insulation film body is wound on the film collecting roller;

[0048] A film collecting guide roller is rotatably arranged along the length direction of the film collecting frame and is located in front of the film collecting roller;

[0049] The second cylinder is arranged at the front side of the film collecting frame in an inclined manner, one end of the second cylinder is connected to the outer wall of the film collecting frame, and the other end is rotatably connected to the side wall of the film collecting frame.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] 1. The present invention can slide axially along the inner wall of the heat exchange roller through the sliding tube, and push the push plate connected thereto to drive the sliding rack to slide radially along the driven wheel to change the wheel diameter of the driven wheel, thereby adjusting the transmission ratio of the pulley group. The speed of the heat exchange roller can be changed according to the temperature adaptability of the heat exchange roller. The real-time linkage mechanism effectively solves the time delay problem caused by the independence of traditional temperature and speed regulation, and can quickly respond to temperature changes by adjusting the speed.

[0052] 2. The present invention increases the contact area between the thermal insulation film body and the heat exchange roller by arranging the thermal insulation film body between the upper conveyor belt and the lower conveyor belt. Compared with the contact method between the thermal insulation film body and the heat exchange roller alone, this sandwich structure enables the heat exchange roller to simultaneously exchange heat with the upper and lower surfaces of the thermal insulation film body, thereby improving the heat exchange efficiency, shortening the test cycle, and improving the test efficiency.

[0053] 3. The present invention forms a circulation system between the temperature-controlled water tank and the heat exchange roller through a water pump, a water supply pipe and a return pipe. When the heat exchange temperature of the insulation film body needs to be changed, the temperature setting in the temperature-controlled water tank can be quickly adjusted, and the heat exchange medium can circulate rapidly in the entire system, so that the temperature of the surface of the heat exchange roller changes rapidly. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a front structural schematic diagram of the present invention;

[0055] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0056] Figure 3 It is a front view structural schematic diagram of the present invention;

[0057] Figure 4 It is a schematic diagram of the structure of the heat exchange component and the drive component in the present invention;

[0058] Figure 5 It is a schematic diagram of the structure of the test assembly in the present invention;

[0059] Figure 6 It is a schematic cross-sectional structure diagram of the driving assembly in the present invention;

[0060] Figure 7 It is a schematic diagram of the cross-sectional front view structure of the heat exchange roller in the present invention;

[0061] Figure 8 It is a schematic diagram of the structure of the sliding tube in the present invention.

[0062] In the figure:

[0063] 1. Test stand; 11. Frame; 12. Lower transition guide roller; 13. Support test roller; 14. Tensioning roller; 15. Upper transition guide roller;

[0064] 2. Feeding assembly; 21. Film feeding frame; 22. Front end rotating arm; 23. Film feeding roller; 24. First cylinder;

[0065] 3. Material collection assembly; 31. Film collection frame; 32. Film collection guide roller; 33. Rear rotating arm; 34. Film collection roller; 35. Second cylinder;

[0066] 4. Thermal insulation film body;

[0067] 5. Test assembly; 51. Detection frame; 52. Translation stage; 53. Vertical plate; 54. Ball screw; 55. Servo motor; 56. Slide; 57. Adjustment seat; 58. CCD camera; 59. Lens;

[0068] 6. Heat exchange assembly; 61. Heat exchange rack; 62. Heat exchange roller; 63. Temperature control water tank; 64. Water pump; 65. Water supply pipe; 66. Water return pipe;

[0069] 7. Upper conveying assembly; 71. Upper roller body; 72. Upper guide roller; 73. Upper tensioning roller; 74. Upper conveying belt;

[0070] 8. Lower conveying assembly; 81. Lower roller body; 82. Lower guide roller; 83. Lower tensioning roller; 84. Lower conveying belt;

[0071] 9. Speed ​​change assembly; 91. Synchronous wheel; 92. Synchronous belt; 93. Driven wheel; 94. Driving motor; 95. Driving wheel; 96. Transmission belt; 97. Sliding rack; 98. Outer expansion plate; 99. Rotating gear; 910. Transmission gear ring; 911. Fixed inner tube; 912. First through hole; 913. Sliding tube; 914. Second through hole; 915. Push plate; 916. Inclined surface; 917. Water inlet chamber; 918. Drain chamber. DETAILED DESCRIPTION

[0072] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0073] See also Figure 1-8 The present invention provides a technical solution: a vehicle thermal insulation film testing device, comprising:

[0074] A CCD camera 58 for testing the thermal insulation film body 4;

[0075] A plurality of heat exchange rollers 62, the heat insulation film body 4 passes through each heat exchange roller 62 in sequence, and a heat exchange flow channel is arranged inside each heat exchange roller 62, and a heat exchange medium circulates in the heat exchange flow channel;

[0076] The pulley assembly includes a driven wheel 93 coaxially mounted on the heat exchange roller 62, and also includes a plurality of sliding racks 97 that can slide radially along the driven wheel 93, and the outer ends of which are connected to the outer expansion plates 98;

[0077] The sliding tube 913 connected to the heat exchange channel and the push plate 915 connected to one end of the sliding tube 913, when the flow rate of the heat exchange medium circulating in the heat exchange channel increases, the sliding tube 913 slides axially along the inner wall of the heat exchange roller 62, and the push plate 915 drives the sliding rack 97 to slide radially along the driven wheel 93 to adjust the transmission ratio of the pulley group.

[0078] Specifically, when the flow rate of the heat exchange medium in the heat exchange flow channel increases, it means that the temperature of the thermal insulation film body 4 may be in a rapid rise stage or is about to exceed the appropriate processing temperature range;

[0079] This process realizes automatic and real-time adjustment of the rotation speed of the heat exchange roller 62 according to the actual temperature change of the insulation film body 4. For example, when the temperature of the insulation film body 4 needs to be increased, the flow rate of the heat exchange medium increases. At this time, the sliding tube 913 can slide axially along the inner wall of the heat exchange roller 62, and push the push plate 915 connected thereto to drive the sliding rack 97 to slide radially along the driven wheel 93 to change the wheel diameter of the driven wheel 93, and then adjust the transmission ratio of the pulley group. The rotation speed of the heat exchange roller 62 can be quickly reduced, and the residence time of the insulation film body 4 on the heat exchange roller 62 can be extended, thereby improving the heat exchange time. This real-time linkage mechanism effectively solves the time delay problem caused by the independence of traditional temperature and speed regulation, and can quickly respond to temperature changes by speed adjustment, greatly improving the accuracy of temperature control and production stability.

[0080] The device adapts to the changes of the thermal insulation film body 4 by automatically adjusting the rotation speed of the heat exchange roller 62, thereby avoiding the situation in which the test accuracy of the thermal insulation film body 4 is reduced due to untimely or inaccurate adjustment of temperature and rotation speed in traditional tests.

[0081] See also Figure 6-Figure 8, and also includes a speed change component 9, the speed change component 9 includes: a fixed inner tube 911 is fixedly installed inside the heat exchange roller 62, the inner cavity of the heat exchange roller 62 is divided into a water inlet cavity 917 and a water discharge cavity 918 by the fixed inner tube 911, the fixed inner tube 911 extends along the length direction of the water inlet cavity 917, the sliding tube 913 is sealed and slides inside the fixed inner tube 911, one end of the sliding tube 913 extending to the inside of the fixed inner tube 911 is a closed structure, and the other end of the sliding tube 913 extends to the inside of the water discharge cavity 918 The sliding tube 913 has an open structure, and a push plate 915 is arranged on the open end surface of the sliding tube 913. The push plate 915 extends along the length direction of the drainage cavity 918. An inclined surface 916 is arranged on the end of the push plate 915 away from the sliding tube 913, and one end of one sliding rack 97 extends to the inside of the drainage cavity 918 and abuts against the surface of the push plate 915. A first through hole 912 is opened on the side wall of the fixed inner tube 911, and a second through hole 914 corresponding to the first through hole 912 is opened on the outer wall of the sliding tube 913.

[0082] Specifically, when the heat exchange medium enters the heat exchange roller 62, it will exchange heat with the inside of it, so that the heat exchange roller 62 has heat. The heat of the heat exchange roller 62 exchanges heat with the insulation film body 4, which can achieve the heating and cooling of the insulation film body 4. The heat exchange medium entering the heat exchange roller 62 can only enter the fixed inner tube 911 through the first through hole 912, and then enter the sliding tube 913 through the second through hole 914, and then stay in the drainage cavity 918 through the sliding tube 913. When the flow rate of the heat exchange medium increases, the impact force of the fluid will The sliding tube 913 is pushed to slide toward the inside of the drainage chamber 918. When the sliding tube 913 slides, the connecting part between the first through hole 912 and the second through hole 914 is reduced, thereby increasing the water pressure inside the water inlet chamber 917. The water pressure can be used to push the sliding tube 913 to slide inside the fixed inner tube 911. At the same time, the sliding of the sliding tube 913 can drive the push plate 915 to axially displace along the inner wall of the heat exchange roller 62. The movement of the push plate 915 can push the sliding rack 97 to radially displace along the driven wheel 93 to change the wheel diameter of the driven wheel 93.

[0083] See also Figure 6 and Figure 7 A rotating gear 99 meshing with the sliding rack 97 is rotatably installed inside the driven wheel 93, and a transmission gear ring 910 meshing with the rotating gear 99 is also rotatably installed inside the driven wheel 93.

[0084] Specifically, the movement of one of the sliding racks 97 can drive the rotating gear 99 meshing with it to rotate, and the rotating gear 99 can drive the transmission gear ring 910 to rotate. The transmission gear ring 910 can drive the remaining rotating gears 99 meshing with it to rotate, thereby achieving the effect of synchronously displacing multiple sliding racks 97 along the radial direction of the driven wheel 93.

[0085] See also Figure 3, further comprising a test component 5, the test component 5 comprising:

[0086] A detection frame 51 is fixedly mounted on the top surface of the test frame 1. A translation platform 52 that can slide along its width direction is disposed on the top surface of the detection frame 51. A vertical plate 53 is fixedly mounted on the top surface of the translation platform 52.

[0087] A ball screw 54 is rotatably mounted on the vertical plate 53, on which a slide 56 is threadedly connected, and a servo motor 55 for driving the ball screw 54 to rotate is also mounted on the translation stage 52;

[0088] The adjusting seat 57 is rotatably mounted on the slide 56. A lens 59 is fixedly mounted on the top surface of the adjusting seat 57. The lens 59 corresponds to the shooting direction line of the CCD camera 58. A light source is installed on the detection frame 51. The CCD camera 58 is directly opposite to the light source. The shooting direction line of the CCD camera 58 is outside the detection surface.

[0089] Specifically, the detection frame 51 and the translation stage 52 are arranged to facilitate the installation of the CCD camera 58 on the test frame 1, and the ball screw 54 is driven to rotate by the servo motor 55, so that the slide 56 can slide along the top surface of the translation stage 52. During the sliding process of the slide 56, the CCD camera 58 and the lens 59 can be driven to move synchronously, and then the irradiation position of the CCD camera 58 can be adjusted. The pitch angle of the CCD camera 58 on the slide 56 can be adjusted by rotating the adjustment seat 57, and then the irradiation angle of the CCD camera 58 can be adjusted to ensure that the CCD camera 58 can be irradiated on the detection surface of the thermal insulation film body 4.

[0090] It should be noted that: by facing the CCD camera 58 with the light source, the shooting direction line of the CCD camera 58 is on the detection surface to cooperate with the roughness test of the insulation film body 4. This test method abandons the current conventional detection method of directly taking pictures through the camera toward the fabric surface. This test method uses a line scanning camera and a relatively set light source to perform line scanning imaging on the surface of the running insulation film body 4. The shooting direction line of the line scanning camera is on the outside of the detection surface, and the distance between the shooting direction line and the nearest point of the detection surface is less than the protrusion height of the set defect point. When there is no defect on the surface of the insulation film body 4, the image of the line scanning camera is a white image, and when there is a defect point on the carpet surface, the defect point will block the light of the light source, and black spots will appear on the white image taken by the line scanning camera. This simplifies the image comparison calculation, and the detection result is very accurate, thereby improving manual detection and reducing labor costs.

[0091] See also Figure 1-Figure 4 , further comprising an upper conveying assembly 7 and a lower conveying assembly 8, wherein the upper conveying assembly 7 is located above the lower conveying assembly 8;

[0092] The upper conveying assembly 7 comprises:

[0093] The upper roller body 71 is rotatably mounted on the front side of the heat exchange frame 61;

[0094] The upper guide roller 72 is rotatably mounted on the rear side of the heat exchange frame 61;

[0095] An upper tensioning roller 73 is elastically mounted above the heat exchange frame 61;

[0096] The upper conveyor belt 74 is transmission-connected between the upper roller body 71, the upper guide roller 72, the upper tensioning roller 73 and the heat exchange roller 62. The upper conveyor belt 74 has the same moving path as the thermal insulation film body 4.

[0097] The lower conveying assembly 8 comprises:

[0098] The lower roller body 81 is rotatably mounted on the front side of the heat exchange frame 61;

[0099] The lower guide roller 82 is rotatably mounted on the rear side of the heat exchange frame 61;

[0100] A lower tensioning roller 83, elastically mounted above the heat exchange frame 61;

[0101] The lower conveyor belt 84 is transmission-connected between the lower roller body 81, the lower guide roller 82, the lower tension roller 83 and the heat exchange roller 62. The lower conveyor belt 84 has the same moving path as the thermal insulation film body 4.

[0102] The upper conveyor belt 74 , the thermal insulation film body 4 , and the lower conveyor belt 84 are sequentially attached and overlapped in the heat exchange roller 62 .

[0103] Specifically, the upper conveyor belt 74 and the lower conveyor belt 84 are used in coordination to clamp and convey the insulation film body 4 from the upper and lower sides. This method can effectively limit the left and right shaking and deviation of the insulation film body 4 during the conveying process, so that it can always move stably along the established moving path. Due to the clamping effect of the upper conveyor belt 74 and the lower conveyor belt 84, the insulation film body 4 can also maintain linear motion, ensuring that it accurately enters the subsequent testing link, thereby improving the accuracy and stability of the entire production process.

[0104] The design of the upper conveyor belt 74, the insulation film body 4 and the lower conveyor belt 84 fitting and overlapping in sequence in the heat exchange roller 62 greatly increases the contact area between the insulation film body 4 and the heat exchange roller 62. Compared with the contact between the insulation film body 4 and the heat exchange roller 62 alone, this sandwich structure enables the heat exchange roller 62 to simultaneously exchange heat on the upper and lower surfaces of the insulation film body 4, thereby improving the heat exchange efficiency. Under the same heat exchange time and heat exchange medium temperature conditions, this structure can make the temperature of the insulation film body 4 reach the required temperature of the test process more quickly, thereby shortening the test cycle and improving the test efficiency;

[0105] In addition, due to the increase in contact area, the heat exchange process is more uniform, avoiding performance differences caused by local uneven heat exchange of the insulation film body 4. The materials of the upper conveyor belt 74 and the lower conveyor belt 84 usually have certain thermal conductivity. When they pass through the heat exchange roller 62 together with the insulation film body 4, they can play a role in auxiliary heat transfer, which helps to transfer the heat on the surface of the heat exchange roller 62 to the insulation film body 4 more evenly, further improving the uniformity of heat exchange. At the same time, it can also reduce the air gap of the insulation film body 4 during the heat exchange process, reduce thermal resistance, and improve the stability of heat exchange. Through this sandwich structure transportation method, the air gap can be effectively eliminated, ensuring the stable transfer of heat and improving the reliability of the heat exchange effect.

[0106] See also Figure 4 The pulley group includes a driving wheel 95 installed on the heat exchange frame 61, and the driving wheel 95 and the driven wheel 93 are driven by a transmission belt 96. A driving motor 94 is also fixedly installed on the side wall of the heat exchange frame 61; two adjacent heat exchange rollers 62 in the same plane are both installed with synchronous wheels 91, and a synchronous belt 92 is connected between the two relative synchronous wheels 91.

[0107] Specifically, the driving motor 94 can drive the driving wheel 95 to rotate, and the driving wheel 95 can drive the driven wheel 93 to rotate through the transmission belt 96. The driven wheel 93 can drive one of the heat exchange rollers 62 to rotate. During the rotation of the heat exchange roller 62, the synchronous wheel 91 and the synchronous belt 92 can cooperate to make multiple heat exchange rollers 62 rotate synchronously, and the insulation film body 4 is transported by the rotation of the heat exchange roller 62.

[0108] See also Figure 4 , further comprising a heat exchange component 6, the heat exchange component 6 comprising:

[0109] A temperature-controlled water tank 63 is arranged on the side wall of the heat exchange frame 61, and a heat exchange medium is arranged inside the water tank. A water pump 64 for extracting the heat exchange medium inside the water tank is installed on the water tank;

[0110] The water supply pipe 65 is a multi-pass structure, one end of which is connected to the output end of the water pump 64, and the other ends are respectively connected to one end of the corresponding heat exchange roller 62;

[0111] The return pipe 66 is a multi-pass structure, one end of which is connected to the interior of the temperature control water tank 63, and the other ends are respectively connected to the other end of the corresponding heat exchange roller 62.

[0112] Specifically, the setting of the temperature-controlled water tank 63 makes it possible to accurately control the temperature of the heat exchange medium. By equipping the temperature-controlled water tank 63 with heating and cooling devices such as electric heaters and cooling coils, the temperature of the heat exchange medium can be stabilized within the required range according to the different process requirements of the insulation film body 4. For certain insulation film body 4 materials that require a specific preheating temperature, the heat exchange medium can be accurately heated to the required temperature, and the error can be controlled within the range of ±1°C, ensuring that the insulation film body 4 has a stable and required initial temperature when entering the subsequent processing link.

[0113] Since a circulation system is formed between the temperature-controlled water tank 63 and the heat exchange roller 62 through the water pump 64, the water supply pipe 65 and the return pipe 66, when the heat exchange temperature of the insulation film body 4 needs to be changed, the temperature setting in the temperature-controlled water tank 63 can be quickly adjusted, and the heat exchange medium can circulate quickly in the entire system, so that the temperature on the surface of the heat exchange roller 62 changes rapidly. For example, if it is necessary to switch to the production of different types of insulation films during the production process, the heat exchange temperature required for each insulation film is different. This system can complete the temperature adjustment in a short time, greatly improving the flexibility and efficiency of production.

[0114] In addition, by installing temperature sensors in the system, the temperature of the heat exchange medium and the temperature of the insulation membrane body 4 after heat exchange can be monitored in real time, and the temperature setting of the temperature control water tank 63 can be adjusted in time according to the feedback information to achieve closed-loop temperature control. This can ensure that in the case of various production conditions changing, such as ambient temperature fluctuations, production speed changes, etc., the heat exchange temperature of the insulation membrane body 4 can always be kept stable within the required range.

[0115] Reference Figure 1-Figure 4 The thermal insulation film body 4 is bent alternately in different directions on each heat exchange roller 62 ; the thermal insulation film body 4 first passes through the heat exchange component 6 and then passes through the test component 5 .

[0116] Specifically, the thermal insulation film body 4 is bent alternately in different directions on each heat exchange roller 62, which greatly increases the length of its travel path in the heat exchange area. This allows the thermal insulation film body 4 to have more contact area and longer contact time with the heat exchange roller 62. Compared with the traditional linear heat exchange method, this curved path design allows the thermal insulation film body 4 to have a more sufficient heat exchange with the heat exchange medium in the same space. The extended heat exchange path enables the thermal insulation film body 4 to absorb or release heat more fully, thereby more accurately controlling its temperature.

[0117] The alternating bending structure enables the thermal insulation film body 4 to fully contact the heat exchange roller 62 in different directions, avoiding the temperature unevenness that may be caused by traditional single-direction heat exchange. For example, in some thicker thermal insulation film bodies 4, it takes a certain amount of time for heat to transfer from the surface to the inside. If heat exchange is performed in only one direction, it may cause a large temperature gradient inside the thermal insulation film body 4, affecting the performance and quality of the product. By alternating bending, heat can be evenly transferred to various parts of the thermal insulation film body 4 from multiple directions, ensuring that the temperature distribution of the entire thermal insulation film body 4 is more uniform.

[0118] Reference Figure 1-Figure 4 The test frame 1 includes: a frame 11, on which a lower transition guide roller 12 and a supporting test roller 13 for winding the thermal insulation film body 4 are arranged, the outer arc surface of the supporting test roller 13 is a detection surface, the lower transition guide roller 12 is rotatably arranged on the side wall of the lower part of the frame 11, and the supporting test roller 13 is rotatably installed on one side of the top surface of the frame 11;

[0119] A tensioning roller 14, which is rotatably mounted on the inner side of the frame 11, and the tensioning roller 14 is arranged below the supporting test roller 13;

[0120] The upper transition guide roller 15 is rotatably mounted on the other side of the top surface of the frame 11 , and the upper transition guide roller 15 and the supporting test roller 13 are symmetrically arranged.

[0121] Specifically, after the insulation film body 4 passes through the support test roller 13, the roughness is detected at the support test roller 13, and the CCD camera 58 and the relatively arranged light source are used to perform line scanning and surface imaging on the running fabric surface. The shooting direction line of the CCD camera 58 is on the outside of the detection surface, and the distance between the shooting direction line and the nearest point of the detection surface is less than the protrusion height of the set defect point. When there is no defect on the surface of the insulation film body 4, the image of the CCD camera 58 is a white image, and when there is a defect point on the carpet surface, the defect point will block the light of the light source, and black spots will appear on the white image taken by the CCD camera 58.

[0122] Reference Figure 1-Figure 3 A feeding assembly 2 for unwinding the thermal insulation film body 4 is provided on one side of the test frame 1, and a receiving assembly 3 for winding the thermal insulation film body 4 is provided on the other side of the test frame 1;

[0123] The feeding assembly 2 comprises:

[0124] The film feeding frame 21 is arranged at the front side of the frame 11, on which a front end rotating arm 22 that can rotate along its axial direction is rotatably mounted, and a film feeding roller 23 is mounted on the front end rotating arm 22, and the heat insulation film body 4 is wound on the film feeding roller 23;

[0125] The first cylinder 24 is obliquely arranged at the front side of the film feeding frame 21, one end of which is connected to the outer wall of the front rotating arm 22, and the other end is rotatably connected to the side wall of the film feeding frame 21;

[0126] The material receiving component 3 comprises:

[0127] The film receiving frame 31 is arranged at the rear side of the frame 11, and a rear end rotating arm 33 is rotatably mounted thereon and can rotate along its axial direction. A film receiving roller 34 is mounted on the rear end rotating arm 33, and the thermal insulation film body 4 is wound on the film receiving roller 34;

[0128] The film collecting guide roller 32 is rotatably arranged along the length direction of the film collecting frame 31 and is located in front of the film collecting roller 34;

[0129] The second cylinder 35 is obliquely disposed at the front side of the film collecting frame 31 , one end of which is connected to the outer wall of the film collecting frame 31 , and the other end of which is rotatably connected to the side wall of the film collecting frame 31 .

[0130] Specifically, the thermal insulation film body 4 can be transported by the film feeding roller 23 provided on the film feeding frame 21, the rotation angle of the front rotating arm 22 can be adjusted by the extension and retraction of the first cylinder 24, and the entry angle of the thermal insulation film body 4 can be adjusted by adjusting the angle of the front rotating arm 22; the thermal insulation film body 4 can be rolled up by the rear rotating arm 33 provided on the film winding frame 31, the rotation angle of the rear rotating arm 33 can be adjusted by the extension and retraction of the second cylinder 35, and the rolling angle of the thermal insulation film body 4 can be adjusted by adjusting the angle of the rear rotating arm 33;

[0131] It should be noted that the correct entry angle and winding angle of the insulation film body 4 are crucial to the tension control of the insulation film body 4 during the testing process. By adjusting the angles of the front rotating arm 22 and the rear rotating arm 33, the tension distribution of the insulation film body 4 during the conveying and winding process can be accurately controlled. For example, when the insulation film enters the production equipment, if the angle is not appropriate, it may cause uneven tension, thereby causing deformation, wrinkling or excessive stretching of the insulation film. By adjusting the angle of the front rotating arm 22, the insulation film can smoothly enter each processing link with appropriate tension to ensure the flatness and dimensional stability of the product.

[0132] During the winding process, the angle adjustment of the rear end rotating arm 33 can affect the tightness and uniformity of the winding. If the winding angle is inappropriate, it may cause looseness, misalignment or uneven edges inside the insulation film roll, affecting subsequent storage, transportation and use. By precisely adjusting the angle of the rear end rotating arm 33, uniform and tight winding can be achieved, thereby improving product quality and reliability.

Claims

1. A vehicle thermal insulation film testing device, characterized in that: include: A CCD camera (58) for testing the thermal insulation film body (4); A plurality of heat exchange rollers (62), wherein the heat insulation film body (4) passes through each of the heat exchange rollers (62) in sequence, and each of the heat exchange rollers (62) is provided with a heat exchange flow channel inside, and a heat exchange medium circulates in the heat exchange flow channel; The pulley assembly comprises a driven wheel (93) coaxially mounted on the heat exchange roller (62), and also comprises a plurality of sliding racks (97) which can slide radially along the driven wheel (93), and the outer ends of the sliding racks are connected to an outer expansion plate (98); A sliding tube (913) connected to the heat exchange channel and a push plate (915) connected to one end of the sliding tube (913) are configured such that when the flow rate of the heat exchange medium circulating in the heat exchange channel increases, the sliding tube (913) slides axially along the inner wall of the heat exchange roller (62), and the push plate (915) drives the sliding rack (97) to slide radially along the driven wheel (93) to adjust the transmission ratio of the pulley group.

2. The automotive thermal insulation film testing device according to claim 1, characterized in that: A fixed inner tube (911) is fixedly installed inside the heat exchange roller (62). The inner cavity of the heat exchange roller (62) is divided into a water inlet cavity (917) and a water discharge cavity (918) by the fixed inner tube (911). The fixed inner tube (911) extends along the length direction of the water inlet cavity (917). The sliding tube (913) slides in a sealed manner inside the fixed inner tube (911). One end of the sliding tube (913) extending into the interior of the fixed inner tube (911) is a closed structure, and the other end of the sliding tube (913) extends into the interior of the water discharge cavity (918) and is an open structure. A push plate (915) is provided on the open end surface of the sliding tube (913), and the push plate (915) extends along the length direction of the drainage cavity (918). An inclined surface (916) is provided on the end of the push plate (915) away from the sliding tube (913), and one end of one of the sliding racks (97) extends into the interior of the drainage cavity (918) and abuts against the surface of the push plate (915). A first through hole (912) is provided on the side wall of the fixed inner tube (911), and a second through hole (914) corresponding to the first through hole (912) is provided on the outer wall of the sliding tube (913).

3. The automotive thermal insulation film testing device according to claim 1, characterized in that: A rotating gear (99) corresponding to and meshing with the sliding rack (97) is rotatably mounted inside the driven wheel (93), and a transmission gear ring (910) meshing with the rotating gear (99) is also rotatably mounted inside the driven wheel (93).

4. The automotive thermal insulation film testing device according to claim 1, characterized in that: Also included is a test component (5), the test component (5) comprising: A detection frame (51) is fixedly mounted on the top surface of the test frame (1); the top surface of the detection frame (51) is provided with a translation platform (52) that can slide along its width direction; the top surface of the translation platform (52) is fixedly mounted with a vertical plate (53); A ball screw (54) is rotatably mounted on the vertical plate (53) and a slide table (56) is threadedly connected thereto. A servo motor (55) for driving the ball screw (54) to rotate is also mounted on the translation table (52); An adjustment seat (57) is rotatably mounted on the slide table (56); a lens (59) is fixedly mounted on the top surface of the adjustment seat (57); the lens (59) corresponds to a shooting direction line of a CCD camera (58); a light source is mounted on the detection frame (51); the CCD camera (58) is directly opposite to the light source; and the shooting direction line of the CCD camera (58) is located outside the detection surface.

5. The automotive thermal insulation film testing device according to claim 1, characterized in that: It also includes an upper conveying assembly (7) and a lower conveying assembly (8), wherein the upper conveying assembly (7) is located above the lower conveying assembly (8); The upper conveying assembly (7) comprises: An upper roller body (71) is rotatably mounted on the front side of the heat exchange frame (61); An upper guide roller (72) is rotatably mounted on the rear side of the heat exchange frame (61); An upper tensioning roller (73) elastically mounted above the heat exchange frame (61); An upper conveyor belt (74) is transmission-connected between the upper roller body (71), the upper guide roller (72), the upper tensioning roller (73) and the heat exchange roller (62), and the upper conveyor belt (74) has the same moving path as the thermal insulation film body (4); The lower conveying assembly (8) comprises: A lower roller body (81) is rotatably mounted on the front side of the heat exchange frame (61); A lower guide roller (82) is rotatably mounted on the rear side of the heat exchange frame (61); A lower tensioning roller (83) elastically mounted above the heat exchange frame (61); A lower conveyor belt (84) is transmission-connected between the lower roller body (81), the lower guide roller (82), the lower tensioning roller (83) and the heat exchange roller (62), and the lower conveyor belt (84) has the same moving path as the thermal insulation film body (4); The upper conveyor belt (74), the thermal insulation film body (4), and the lower conveyor belt (84) are sequentially fitted and overlapped inside the heat exchange roller (62).

6. The automotive thermal insulation film testing device according to claim 1, characterized in that: The pulley assembly comprises a driving wheel (95) mounted on a heat exchange frame (61), the driving wheel (95) and a driven wheel (93) are driven by a transmission belt (96), and a driving motor (94) is fixedly mounted on a side wall of the heat exchange frame (61); two adjacent heat exchange rollers (62) in the same plane are both mounted with synchronous wheels (91), and a synchronous belt (92) is connected between the two opposite synchronous wheels (91).

7. The automotive thermal insulation film testing device according to claim 1, characterized in that: It also includes a heat exchange component (6), wherein the heat exchange component (6) includes: A temperature-controlled water tank (63) is arranged on the side wall of the heat exchange frame (61), a heat exchange medium is arranged inside the water tank, and a water pump (64) for extracting the heat exchange medium inside the water tank is installed on the water tank; A water supply pipe (65) having a multi-pass structure, one end of which is connected to the output end of the water pump (64), and the other ends are respectively connected to one end of the corresponding heat exchange roller (62); The return water pipe (66) is a multi-pass structure, one end of which is connected to the interior of the temperature control water tank (63), and the other ends are respectively connected to the other end of the corresponding heat exchange roller (62).

8. The automotive thermal insulation film testing device according to claim 7, characterized in that: The thermal insulation film body (4) is bent alternately in different directions on each of the heat exchange rollers (62); the thermal insulation film body (4) first passes through the heat exchange component (6) and then passes through the test component (5).

9. The automotive thermal insulation film testing device according to claim 4, characterized in that: The test stand (1) comprises: A frame (11) is provided with a lower transition guide roller (12) for winding a thermal insulation film body (4) and a supporting test roller (13), wherein the outer arc surface of the supporting test roller (13) is a detection surface, the lower transition guide roller (12) is rotatably arranged on the side wall of the lower part of the frame (11), and the supporting test roller (13) is rotatably installed on one side of the top surface of the frame (11); A tensioning roller (14) which is rotatably mounted on the inner side of the frame (11), and the tensioning roller (14) is arranged lower than the supporting test roller (13); An upper transition guide roller (15) is rotatably mounted on the other side of the top surface of the frame (11), and the upper transition guide roller (15) and the supporting test roller (13) are symmetrically arranged.

10. The automotive thermal insulation film testing device according to claim 9, characterized in that: A feeding assembly (2) for unwinding the thermal insulation film body (4) is provided on one side of the test frame (1), and a receiving assembly (3) for winding the thermal insulation film body (4) is provided on the other side of the test frame (1); The feeding assembly (2) comprises: A film delivery frame (21) is arranged at the front side of the frame (11), on which a front end rotating arm (22) is rotatably mounted and can rotate along its axial direction, a film delivery roller (23) is mounted on the front end rotating arm (22), and the thermal insulation film body (4) is wound around the film delivery roller (23); The first cylinder (24) is arranged obliquely on the front side of the film delivery frame (21), one end of which is connected to the outer wall of the front rotating arm (22), and the other end of which is rotatably connected to the side wall of the film delivery frame (21); The material receiving component (3) comprises: A film collecting frame (31) is arranged at the rear side of the frame (11), on which a rear end rotating arm (33) is rotatably mounted and can rotate along its axial direction, a film collecting roller (34) is mounted on the rear end rotating arm (33), and the thermal insulation film body (4) is wound around the film collecting roller (34); A film collecting guide roller (32) is rotatably arranged along the length direction of the film collecting frame (31) and is located in front of the film collecting roller (34); The second cylinder (35) is arranged obliquely on the front side of the film collecting frame (31), one end of which is connected to the outer wall of the film collecting frame (31), and the other end of which is rotatably connected to the side wall of the film collecting frame (31).

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