Polyurethane film performance detection device

Abstract

The invention relates to the technical field of polyurethane product detection, and discloses a polyurethane film performance detection device which comprises a detection module installed on a base, two detection tables which are vertically and symmetrically distributed are arranged on the upper side of the detection module, each detection table comprises a detection plate, and the two detection plates are matched to be used for pasting a polyurethane film. The lower side detection table is in sliding fit with the base, a first guide positioning mechanism is connected between the upper side detection table and the base, and the upper side detection table is driven by the detection module. The rotating arms can be driven to rotate synchronously by operating the first positioning guide mechanism, the upper side detection table integrally moves synchronously along with the rotating arms in a horizontal state, and the sliding sleeve drives the upper side detection table to slide straightly along the rotating arms when being driven by the detection module, so that the corners of the upper side detection table are subjected to the same thrust. And the acting force can uniformly act on the polyurethane film, so that the adhesive layer is prevented from being firstly stripped through a point with relatively large stress, and the detection accuracy of the adhesive property of the adhesive layer is improved.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane product detection, in particular to a polyurethane film performance detection device. Background Art

[0002] When testing the performance of the polyurethane film, the polyurethane film is pasted between two test plates, and then a vertical and opposite tensile force is applied to the two test plates through a testing device, so that the bonding peel strength of the polyurethane film can be measured, thereby detecting the bonding performance of the polyurethane film. The prior art can enrich the bonding performance data of the polyurethane film by changing the force application angle of the testing device on the test plate. For example, a patent with prior art announcement number CN118533741A discloses a silane-modified polyurethane sealant bonding performance testing device and method. When testing the sealant, the overall deflection angle between the upper base plate, the lower base plate and the vertical direction can be flexibly changed, so that the sealant between the upper base plate and the lower base plate at different inclination angles can be stretched and peeled, so that it can be determined whether the bonding strength of the sealant at different angles is different and the amount of change.

[0003] However, the prior art still has the following defects: since the force-applying column and the upper base are movably connected via a bending axis, when the force-applying column and the upper base are not arranged vertically, the tension applied to the upper base cannot be evenly applied to the adhesive layers, and the adhesive layers are prone to be peeled off first at the edges where the force is greater, thereby reducing the accuracy of detecting the bonding performance of the adhesive layers. Summary of the invention

[0004] In view of the problem in the prior art that the adhesive layer cannot be uniformly stressed when the pulling force direction is not vertical to the detection plate, a polyurethane film performance detection device is proposed.

[0005] The purpose is to make the sliding sleeve at the corner of the detection plate move straight on the rotating arm, apply a stable and uniform thrust to the detection plate, make the rubber layer evenly stressed, and improve the detection accuracy.

[0006] The technical solution of the present invention is a polyurethane film performance detection device, including a base and a detection module installed on the base, wherein two vertically symmetrically distributed detection platforms are provided on the upper side of the detection module, and the detection platform includes a detection plate, and the two detection plates are used to paste the polyurethane film, the detection platform on the lower side is slidably matched with the base, and a first guiding and positioning mechanism is connected between the detection platform on the upper side and the base, and the detection platform on the upper side is driven by the detection module; the first guiding and positioning mechanism includes a guide frame, and a brake assembly installed in the guide frame; the guide frame includes a sliding sleeve rotatably connected to the corner of the upper detection platform, a rotating arm is slidably connected in the sliding sleeve, the lower end of the rotating arm is rotatably connected to the base, and a plurality of the rotating arms are arranged in a rectangular structure; the brake assembly includes a brake block slidably connected to the upper end of the rotating arm, and a driving component for driving the brake block to move.

[0007] By adopting the above technical solution, after the polyurethane film is bonded between the two inspection plates, the first guiding positioning mechanism is rotated, the rotating arms rotate synchronously, the upper inspection platform slides on the rotating arm through the sliding sleeve, and the upper inspection platform drives the lower inspection platform to translate. After the rotating arm rotates to the detection angle, the detection module drives the sliding sleeve to slide straight on the rotating arm. The edges and corners of the upper inspection plate are all subjected to the same thrust, so that the polyurethane film layer bonded between the two inspection plates can be evenly stressed, thereby improving the detection accuracy.

[0008] Furthermore, the base includes a bottom plate, and vertical plates are fixedly connected to two symmetrical sides of the bottom plate, a plurality of reinforcement rods are fixedly connected between the two vertical plates, and a control hole is opened in the middle of the vertical plates.

[0009] By adopting the above technical solution, the rotating arm can be in a vertical state and the test plate in the test table can be taken out through the control hole, so as to facilitate the bonding of the polyurethane film and the test plate and the subsequent cleaning.

[0010] Furthermore, the detection platform also includes a flat plate, to which a connecting seat is fixedly connected, and a plurality of T-shaped clips are fixedly connected to the side of the detection plate facing the connecting seat, and a clip slot matching the T-shaped clips is provided on the connecting seat; a heating module is installed on the side of the connecting seat away from the detection plate.

[0011] By adopting the above technical solution, the T-shaped card strip and the card slot are plugged in and matched so that the test board can be conveniently disassembled and assembled on the connecting seat. By taking out the test board, the polyurethane film can be bonded in an open environment, which can ensure the bonding stability between the polyurethane film and the test board and improve the operational convenience. The heating module adopts multiple heating plates installed on the connecting seat. By controlling the heating temperature of the heating plate, the temperature environment of the polyurethane film can be adjusted. Combined with the peeling test at different angles, the test data can be more rich and referenceable.

[0012] Furthermore, the upper end of the rotating arm is slidably connected to an arc seat, and the arc seat is fixedly installed on the base; and the guide frame also includes a connecting piece, and the upper end of the rotating arm is rotatably connected to the connecting piece.

[0013] By adopting the above technical solution, an arc groove is opened on one side of the arc seat, the upper end of the rotating arm slides with the arc groove, and a sliding damping is arranged between the upper end of the rotating arm and the arc groove. By holding the connecting piece, each rotating arm can be driven to rotate synchronously, so as to adjust the peeling force test of the polyurethane film at different angles. After loosening the connecting piece, the rotating arm stably hovers in the arc seat.

[0014] Furthermore, the detection module includes a hydraulic cylinder fixedly connected to the base, one end of the hydraulic cylinder is fixedly connected to a driving plate, the upper side of the driving plate is fixedly connected to a wedge plate, the sliding sleeve is rotatably connected to a guide wheel, and the wedge plate is in rolling contact with the guide wheel.

[0015] By adopting the above technical solution, when the hydraulic cylinder drives the driving plate to move to the left, the wedge plate gradually contacts the guide wheel, and the wedge plate applies thrust to the guide wheel, causing the sliding sleeve to slide straight along the rotating arm.

[0016] Furthermore, an arc-shaped tooth groove is opened in the arc-shaped seat, one side of the brake block is snap-fitted with the arc-shaped tooth groove, and a spring is elastically connected between the other side of the brake block and the rotating arm; the driving component includes a driving rod slidably connected to the rotating arm, one end of the driving rod is fixedly connected to the brake block, and the other end is in sliding contact with a cam, a gear is coaxially connected to the cam, the gear is arranged on the outside of the rotating arm, and the gear is meshed with a rack fixedly connected to the driving plate for transmission.

[0017] By adopting the above technical solution, the spring applies a pulling force to the brake block away from the arc-shaped tooth groove, so that the brake block does not contact the arc-shaped tooth groove. When the driving plate moves to the left and the wedge plate does not contact the guide wheel, the rack and the gear engage to drive the cam to rotate 180°. The cam drives the brake block to engage with the arc-shaped tooth groove through the driving rod, so that the rotation of the rotating arm is restricted, thereby improving the stability of the rotating arm itself when the guide wheel is pushed by the wedge plate.

[0018] Furthermore, a second guide positioning mechanism is installed on the base, and the second guide positioning mechanism is used to slide and limit the lower detection platform. The second guide positioning mechanism includes two guide rail frames; the guide rail frame includes a guide rod rotatably connected to the base, the guide rod is cylindrical, and two sliding seats are sleeved on the guide rod. The sliding seat is connected and fixed to the lower detection platform, and the upper part of the slide is provided with an arc-shaped sliding surface that matches the guide rod.

[0019] By adopting the above technical solution, the arc-shaped sliding surface of the lower detection platform fits the upper part of the guide rod under the action of gravity. When the upper detection platform is displaced under the rotation of the guide frame, the lower detection platform moves synchronously on the guide rod.

[0020] Furthermore, the second guide positioning mechanism also includes a positioning assembly installed on the guide rail frame; the positioning assembly includes a plurality of positioning components evenly distributed at the end of the guide rod, the positioning component is composed of a plurality of positioning blocks 1 arranged at equal intervals, each of the positioning components is arranged at a different angle, the positioning assembly also includes a plurality of positioning blocks 2 hinged to the slide seat, a positioning protrusion is fixed on one side of the positioning block 2, and a positioning groove matched with the positioning protrusion is opened on the positioning block 1.

[0021] By adopting the above technical solution, the arc-shaped sliding surface fits with the upper part of the guide rod under the action of gravity. At this time, positioning block 2 does not contact positioning block 1. When the upper detection platform is moved along the rotating arm by the thrust, the lower detection platform moves synchronously for a distance and then drives positioning block 2 to abut against positioning block 1. At the same time, the positioning protrusion is inserted into the positioning groove, so that the lower detection platform is automatically limited to avoid displacement.

[0022] Furthermore, a guide groove is provided on the guide rod, a fixing rod is fixedly connected to the arc-shaped sliding surface, and the fixing rod is slidably matched with the guide groove.

[0023] By adopting the above technical solution, when the rotating arm rotates, the lower detection platform slides on the guide rod, and the fixed rod cooperates with the guide groove to drive the guide rod to rotate, so that the positioning block 1 set perpendicular to the rotating arm faces the positioning block 2.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. By operating the first positioning and guiding mechanism, each rotating arm can be driven to rotate synchronously. The upper detection platform itself moves synchronously with the rotating arm as a whole in a horizontal state. When the sliding sleeve is driven by the detection module, it drives the upper detection platform to slide straight along the rotating arm, so that the corners of the upper detection platform are subjected to the same thrust, so that the force can act evenly on the polyurethane film, thereby avoiding the adhesive layer from peeling off first at a point with greater force, thereby improving the detection accuracy of the adhesive performance of the adhesive layer.

[0025] 2. The lower inspection platform moves synchronously with the upper inspection platform, and the fixed rod and the guide groove cooperate to drive the guide rod to rotate, so that the positioning block 1 set perpendicular to the rotating arm faces the positioning block 2, so that the force deformation direction of the lower inspection platform can be adaptively adjusted following the rotation of the rotating arm, so that it is parallel and opposite to the thrust direction, thereby further ensuring that the detection force is evenly distributed on the polyurethane film, which helps to further improve the detection accuracy.

[0026] 3. The T-shaped card strip and the card slot are plugged in to make the detection board and the connection seat convenient to disassemble and assemble, so that the detection board can be easily bonded with the polyurethane film in an open environment to ensure the bonding accuracy and facilitate cleaning after detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the base of the present invention; Figure 3 It is a schematic diagram of the structural splitting of two detection platforms of the present invention; Figure 4 It is a schematic diagram of the detection module and guide wheel structure of the present invention; Figure 5 It is a schematic diagram of the disassembly of the brake block and the driving member structure of the present invention; Figure 6 It is a cross-sectional schematic diagram of the rotating arm and arc-shaped seat structure of the present invention; Figure 7 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 8 It is a schematic diagram of the structure of the sliding sleeve and the rotating arm of the present invention; Fig. 9 It is a schematic diagram of the guide rod and the slide structure of the present invention; Fig.10 It is a schematic diagram of the structure of the slide seat and the fixing rod of the present invention; Fig.11 For the present invention Fig. 9 The enlarged schematic diagram of the structural anatomy at B in the middle; Fig.12 This is a schematic diagram of a positioning block structure of the present invention from another viewing angle.

[0028] In the figure: 1. Base; 11. Bottom plate; 12. Vertical plate; 13. Reinforcement rod; 2. Test table; 21. Test plate; 22. T-shaped card strip; 23. Flat plate; 24. Connecting seat; 3. Heating module; 4. Test module; 41. Hydraulic cylinder; 42. Drive plate; 43. Wedge plate; 44. Rack; 5. Guide frame; 51. Sliding sleeve; 52. Rotating arm; 53. Arc seat; 54. Connecting piece; 55. Guide wheel; 56. Arc tooth groove; 6. Brake assembly; 61. Brake block; 62. Spring; 63. Drive rod; 64. Cam; 65. Gear; 7. Guide rail frame; 71. Guide rod; 72. Slide seat; 73. Arc sliding surface; 74. Guide groove; 75. Fixed rod; 8. Positioning assembly; 81. Positioning block one; 82. Positioning block two; 83. Positioning protrusion; 84. Positioning groove; 9. Support seat. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1-Figure 10 , which is the first embodiment of the present invention, provides a polyurethane film performance detection device, including a base 1, and also includes a detection module 4 installed on the base 1, two vertically symmetrically distributed detection platforms 2 are arranged on the upper side of the detection module 4, the detection platform 2 includes a detection plate 21, and the two detection plates 21 are used to stick the polyurethane film, the lower detection platform 2 is slidably matched with the base 1, and a first guiding and positioning mechanism is connected between the upper detection platform 2 and the base 1, and the upper detection platform 2 is driven by the detection module 4; the first guiding and positioning mechanism includes a guide frame 5, and a brake assembly 6 installed in the guide frame 5; the guide frame 5 includes a sliding sleeve 51 rotatably connected to the corner of the upper detection platform 2, and a rotating arm 52 is slidably connected in the sliding sleeve 51, the lower end of the rotating arm 52 is rotatably connected to the base 1, and the multiple rotating arms 52 are arranged in a rectangular structure; the brake assembly 6 includes a brake block 61 slidably connected to the upper end of the rotating arm 52, and a driving component for driving the brake block 61 to move.

[0031] Specifically, after the polyurethane film is bonded between the two detection plates 21, the first guide positioning mechanism is rotated, and the rotating arms 52 rotate synchronously. The upper detection platform 2 slides on the rotating arm 52 through the sliding sleeve 51, and the upper detection platform 2 drives the lower detection platform 2 to translate. After the rotating arm 52 rotates to the detection angle, the detection module 4 drives the sliding sleeve 51 to slide straight on the rotating arm 52. The corners of the upper detection plate 21 are all subjected to the same thrust, so that the polyurethane film layer bonded between the two detection plates 21 can be evenly stressed, thereby improving the detection accuracy.

[0032] Reference Figure 1 and Figure 2 The base 1 includes a bottom plate 11, and vertical plates 12 are fixedly connected to both sides of the bottom plate 11 symmetrically. A plurality of reinforcement rods 13 are fixedly connected between the two vertical plates 12, and a control hole is opened in the middle of the vertical plates 12.

[0033] Specifically, when the rotating arm 52 is in a vertical state, the detection plate 21 in the detection table 2 can be taken out through the control hole, so as to facilitate the bonding of the polyurethane film and the detection plate 21 and the subsequent cleaning.

[0034] Reference Figure 3 The testing platform 2 also includes a flat plate 23, to which a connecting seat 24 is fixedly connected. A plurality of T-shaped clips 22 are fixedly connected to one side of the testing plate 21 facing the connecting seat 24, and a clip groove matching the T-shaped clips 22 is provided on the connecting seat 24; a heating module 3 is installed on the side of the connecting seat 24 away from the testing plate 21.

[0035] Specifically, the T-shaped card strip 22 is plugged into the card slot so that the detection board 21 can be conveniently disassembled and assembled on the connecting seat 24. By taking out the detection board 21, the polyurethane film can be bonded in an open environment, which can ensure the bonding stability of the polyurethane film and the detection board 21 and improve the operational convenience. The heating module 3 adopts multiple heating plates installed on the connecting seat 24. By controlling the heating temperature of the heating plate, the temperature environment of the polyurethane film can be adjusted, and the peeling test at different angles can be combined to make the detection data more rich and referenceable.

[0036] The length direction of the T-shaped clip 22 is perpendicular to the sliding direction of the lower detection platform 2 . When the detection plate 21 is subjected to force, the T-shaped clip 22 is tightly in contact with the slot, thereby preventing the detection plate 21 from sliding and deviating on the connecting seat 24 .

[0037] In addition, both ends of the detection plate 21 are fixed with anti-skid grooves, which can facilitate manual picking up by detection personnel. The opposite side of the two detection plates 21 is provided with a bonding area, and the polyurethane film can be bonded in the bonding area.

[0038] Reference Figure 2 and Figure 4 The upper end of the rotating arm 52 is slidably connected to an arc seat 53, and the arc seat 53 is fixedly installed on the base 1; and the guide frame 5 also includes a connecting member 54, and the upper end of the rotating arm 52 is rotatably connected to the connecting member 54.

[0039] Specifically, an arc groove is opened on one side of the arc seat 53, and the upper end of the rotating arm 52 is slidably matched with the arc groove, and a sliding damping is arranged between the upper end of the rotating arm 52 and the arc groove. By holding the connecting piece 54, each rotating arm 52 can be driven to rotate synchronously, so as to adjust the peeling force test of the polyurethane film at different angles. After loosening the connecting piece 54, the rotating arm 52 is stably suspended in the arc seat 53.

[0040] Among them, the connecting member 54 includes two cross bars, and a plurality of connecting rods are fixedly connected between the two cross bars. The ends of the cross bars are rotatably connected to the upper ends of the rotating arms 52. Each rotating arm 52 cooperates with the base 1 and the connecting member 54 to form a parallelogram structure, so that when the rotating arm 52 rotates, the upper detection platform 2 always remains in a horizontal state.

[0041] Reference Figure 7 In actual use, an angle scale is engraved on one side of the arc seat 53, and a pointer is fixedly connected to the upper end of the rotating arm 52. The specific rotation angle of the rotating arm 52 can be known by the cooperation between the pointer and the angle scale.

[0042] Reference Figure 4The detection module 4 includes a hydraulic cylinder 41 fixedly connected to the base 1, one end of the hydraulic cylinder 41 is fixedly connected to a driving plate 42, the upper side of the driving plate 42 is fixedly connected to a wedge plate 43, a guide wheel 55 is rotatably connected to the sliding sleeve 51, and the wedge plate 43 is in rolling contact with the guide wheel 55.

[0043] Specifically, when the hydraulic cylinder 41 drives the driving plate 42 to move to the left, the wedge plate 43 gradually contacts the guide wheel 55 , and the wedge plate 43 applies a thrust to the guide wheel 55 , so that the sliding sleeve 51 slides straightly along the rotating arm 52 .

[0044] It can be understood that the bottom of the driving plate 42 is slidably matched with the limiting groove provided on the base 1, so that the driving plate 42 can move straight.

[0045] Among them, refer to Figure 3 , Figure 8 The bottom corners of the upper detection table 2 are fixedly connected with a support seat 9, the sliding sleeve 51 is hinged to the support seat 9 through a connecting shaft, and a pressure sensor in contact with the connecting shaft is installed in the support seat 9. The pressure sensor can monitor the thrust of the sliding sleeve 51, thereby recording the adhesive peeling data of the polyurethane film.

[0046] In addition, when the support seat 9 contacts the lower flat plate 23 , the distance between the two connecting seats 24 is fixed, which facilitates connecting the two detection plates 21 bonded with the polyurethane film to the corresponding connecting seats 24 .

[0047] Reference Figure 4-Figure 6 An arc-shaped tooth groove 56 is provided in the arc-shaped seat 53, one side of the brake block 61 is snap-fitted with the arc-shaped tooth groove 56, and a spring 62 is elastically connected between the other side of the brake block 61 and the rotating arm 52; the driving component includes a driving rod 63 slidably connected to the rotating arm 52, one end of the driving rod 63 is connected and fixed to the brake block 61, and the other end is in sliding contact with a cam 64, a gear 65 is coaxially connected to the cam 64, the gear 65 is arranged on the outside of the rotating arm 52, and the gear 65 is meshed with the rack 44 fixedly connected to the driving plate 42 for transmission.

[0048] Specifically, the spring 62 applies a pulling force to the brake block 61 away from the arcuate tooth groove 56, so that the brake block 61 does not contact the arcuate tooth groove 56. When the drive plate 42 moves to the left and the wedge plate 43 does not contact the guide wheel 55, the rack 44 engages with the gear 65 to drive the cam 64 to rotate 180°. The cam 64 drives the brake block 61 to engage with the arcuate tooth groove 56 through the drive rod 63, so that the rotation of the rotating arm 52 is restricted, thereby enhancing the stability of the rotating arm 52 itself when the guide wheel 55 is pushed by the wedge plate 43.

[0049] It can be understood that the rotation axis of the gear 65 and the rotation axis of the rotating arm 52 are located on the same axis, so that when the rotating arm 52 is at any angle, the movement of the rack 44 can drive the gear 65 to rotate.

[0050] Reference Figure 2 , Fig. 9 , Fig.10 A second guide positioning mechanism is installed on the base 1, and the second guide positioning mechanism is used to slide and limit the lower detection platform 2. The second guide positioning mechanism includes two guide rail frames 7; the guide rail frame 7 includes a guide rod 71 rotatably connected to the base 1, the guide rod 71 is cylindrical, and two slide seats 72 are sleeved on the guide rod 71. The slide seat 72 is connected and fixed to the lower detection platform 2, and the upper part of the slide seat 72 is provided with an arc-shaped sliding surface 73 adapted to the guide rod 71.

[0051] Specifically, under the action of gravity, the arc-shaped sliding surface 73 of the lower detection platform 2 is attached to the upper part of the guide rod 71 . When the upper detection platform 2 is displaced under the rotation of the guide frame 5 , the lower detection platform 2 moves synchronously on the guide rod 71 .

[0052] During the actual working process, a controller is fixedly installed on one side of the base 1. The controller includes a control panel and a control module. The control module is connected to the hydraulic cylinder 41, the heating module 3, and the pressure sensor signal. The control panel can control the extension and contraction range of the hydraulic cylinder 41 and the heating temperature of the heating module 3. In addition, the pressure value of the pressure sensor can be displayed.

[0053] Example 2, reference Figure 9-12 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the second guide positioning mechanism also includes a positioning assembly 8 installed on the guide rail frame 7; the positioning assembly 8 includes a plurality of positioning components evenly distributed at the end of the guide rod 71, the positioning component is composed of a plurality of positioning blocks 81 arranged at equal intervals, and each positioning component is arranged at a different angle. The positioning assembly 8 also includes a plurality of positioning blocks 82 hinged to the slide seat 72, a positioning protrusion 83 is fixedly provided on one side of the positioning block 82, and a positioning groove 84 matched with the positioning protrusion 83 is opened on the positioning block 81.

[0054] Specifically, under the action of gravity, the arc-shaped sliding surface 73 fits with the upper part of the guide rod 71. At this time, the positioning block 2 82 does not contact the positioning block 1 81. When the upper detection platform 2 is pushed and moves along the rotating arm 52, the lower detection platform 2 moves synchronously for a distance and then drives the positioning block 2 82 to abut against the positioning block 1 81. At the same time, the positioning protrusion 83 is inserted into the positioning groove 84, so that the lower detection platform 2 is automatically limited to avoid displacement.

[0055] Among them, refer to Fig.11The two ends of the positioning block 82 are rotatably connected to the sliding seat 72 through a fixed connecting shaft, and the axis of the positioning block 82 is offset from the axis of the connecting shaft, that is, the abutting surface of the positioning block 82, the axis of the connecting shaft, and the axis of the positioning block 82 are arranged from top to bottom in sequence, so that when the abutting surface of the positioning block 82 abuts against the positioning block 1 81, it can prevent the positioning block 82 from rotating due to excessive force, and avoid the abutment offset between the positioning block 82 and the positioning block 1 81.

[0056] In addition, the abutment surface angle of the positioning block 1 81 in each positioning component is adapted to the rotation angle of the rotating arm 52, so that when the rotating arm 52 is at one of the angles, one of the positioning components is set toward the positioning block 2 82, and the abutment surface of the positioning block 1 81 in the positioning component is set perpendicular to the rotating arm 52, so that the positioning block 1 81 and the positioning block 2 82 are stably abutted, so that the force deformation direction of the lower detection platform 2 is parallel to and opposite to the force direction of the upper detection platform 2, thereby further ensuring that the detection force is evenly distributed on the polyurethane film layer, which helps to further improve the detection accuracy.

[0057] Reference Fig. 9 , Fig.10 A guide groove 74 is formed on the guide rod 71 , and a fixing rod 75 is fixedly connected to the arc-shaped sliding surface 73 , and the fixing rod 75 is slidably matched with the guide groove 74 .

[0058] Specifically, when the rotating arm 52 rotates, the lower detection platform 2 slides on the guide rod 71, and the fixing rod 75 cooperates with the guide groove 74 to drive the guide rod 71 to rotate, so that the positioning block 1 81 vertically arranged with the rotating arm 52 faces the positioning block 2 82.

[0059] Among them, refer to Fig. 9 The guide groove 74 includes a plurality of parallel flat grooves with equal spacing. The flat grooves are arranged parallel to the axis of the guide rod 71. A connected oblique groove is arranged between two adjacent flat grooves. The oblique groove is arranged at an angle of 45° to the axis of the guide rod 71. When the rotating arm 52 rotates to one of the detection angles, the fixed rod 75 cooperates with the guide groove 74 to drive the guide rod 71 to rotate, so that the positioning block 1 81 arranged perpendicular to the rotating arm 52 faces the positioning block 2 82. The rest of the structure is the same as that of the first embodiment.

[0060] In summary, the working principle of the present invention is as follows: the two sides of the polyurethane film are respectively bonded to the bonding areas of the two detection plates 21, and then the two detection plates 21 are respectively connected to the corresponding flat plates 23 by plugging the T-shaped clip 22 and the connecting seat 24, and the connecting piece 54 is held to drive the rotating arm 52 to rotate, so that the rotating arm 52 and the detection platform 2 are set at a certain angle, and the upper detection platform 2 follows the rotation of the rotating arm 52, and the lower detection platform 2 slides on the guide rod 71, and the fixing rod 75 cooperates with the guide groove 74 to drive the guide rod 71 to rotate, so that the positioning block 81 set perpendicular to the rotating arm 52 faces the positioning block The second 82 enables the heating module 3 to heat the polyurethane film to the test temperature, and then the hydraulic cylinder 41 drives the driving plate 42 to move, the rack 44 first contacts the gear 65 to make the cam 64 rotate 180°, and the driving rod 63 drives the brake block 61 to engage with the arc-shaped tooth groove 56, so that the rotating arm 52 cannot rotate, and then the wedge plate 43 contacts the guide wheel 55 to make the sliding sleeve 51 slide along the rotating arm 52. After the positioning block 82 is engaged with the positioning block 1 81, the upper detection platform 2 is subjected to a thrust parallel to the rotating arm 52, and the lower detection platform 2 is subjected to a force parallel to and opposite to the thrust, thereby completing the non-vertical tensile force peeling test of the polyurethane film.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A polyurethane film performance testing device, comprising a base (1), characterized in that: It also comprises a detection module (4) mounted on the base (1), wherein two detection platforms (2) are arranged on the upper side of the detection module (4) and are distributed vertically symmetrically, wherein the detection platform (2) comprises a detection plate (21), wherein the two detection plates (21) are used to bond a polyurethane film, wherein the detection platform (2) on the lower side is slidably matched with the base (1), and a first guiding and positioning mechanism is connected between the detection platform (2) on the upper side and the base (1), and the detection platform (2) on the upper side is driven by the detection module (4); The first guiding and positioning mechanism comprises a guiding frame (5), and a braking assembly (6) installed in the guiding frame (5); The guide frame (5) comprises a sliding sleeve (51) rotatably connected to the corner of the upper detection platform (2), a rotating arm (52) is slidably connected inside the sliding sleeve (51), the lower end of the rotating arm (52) is rotatably connected to the base (1), and a plurality of the rotating arms (52) are arranged in a rectangular structure; The brake assembly (6) comprises a brake block (61) slidably connected to the upper end of the rotating arm (52), and a driving component used for driving the brake block (61) to move.

2. The polyurethane film performance detection device according to claim 1, characterized in that: The base (1) comprises a bottom plate (11), both sides of the bottom plate (11) being symmetrically fixedly connected to vertical plates (12), a plurality of reinforcing rods (13) being fixedly connected between the two vertical plates (12), and a control hole being provided in the middle of the vertical plates (12).

3. The polyurethane film performance detection device according to claim 1, characterized in that: The detection table (2) further comprises a flat plate (23), a connecting seat (24) being fixedly connected to the flat plate (23), a plurality of T-shaped card strips (22) being fixedly connected to one side of the detection plate (21) facing the connecting seat (24), and a card slot matching the T-shaped card strips (22) being provided on the connecting seat (24); A heating module (3) is installed on a side of the connection seat (24) away from the detection plate (21).

4. The polyurethane film performance detection device according to claim 1, characterized in that: The upper end of the rotating arm (52) is slidably connected to an arc-shaped seat (53), and the arc-shaped seat (53) is fixedly mounted on the base (1); Furthermore, the guide frame (5) further comprises a connecting member (54), and the upper end of the rotating arm (52) is rotatably connected to the connecting member (54).

5. The polyurethane film performance detection device according to claim 1, characterized in that: The detection module (4) comprises a hydraulic cylinder (41) fixedly connected to the base (1); one end of the hydraulic cylinder (41) is fixedly connected to a driving plate (42); a wedge plate (43) is fixedly connected to the upper side of the driving plate (42); a guide wheel (55) is rotatably connected to the sliding sleeve (51); and the wedge plate (43) is in rolling contact with the guide wheel (55).

6. The polyurethane film performance detection device according to claim 4, characterized in that: An arc-shaped tooth groove (56) is formed in the arc-shaped seat (53), one side of the brake block (61) is engaged with the arc-shaped tooth groove (56), and a spring (62) is elastically connected between the other side of the brake block (61) and the rotating arm (52); The driving component comprises a driving rod (63) slidably connected to the rotating arm (52); one end of the driving rod (63) is fixedly connected to the brake block (61); the other end of the driving rod (63) is in sliding contact with a cam (64); a gear (65) is coaxially connected to the cam (64); the gear (65) is arranged on the outside of the rotating arm (52), and the gear (65) is meshed with a rack (44) fixedly connected to the driving plate (42) for transmission.

7. The polyurethane film performance detection device according to claim 1, characterized in that: A second guide positioning mechanism is installed on the base (1), the second guide positioning mechanism is used to slide and limit the lower detection platform (2), and the second guide positioning mechanism comprises two guide rail frames (7); The guide rail frame (7) comprises a guide rod (71) rotatably connected to the base (1); the guide rod (71) is cylindrical; two slide seats (72) are sleeved on the guide rod (71); the slide seats (72) are connected and fixed to the lower detection platform (2); and an arc-shaped sliding surface (73) matching the guide rod (71) is formed on the upper part of the slide seat (72).

8. The polyurethane film performance detection device according to claim 7, characterized in that: The second guiding and positioning mechanism further comprises a positioning assembly (8) mounted on the guide rail frame (7); The positioning assembly (8) comprises a plurality of positioning components evenly distributed at the end of the guide rod (71), the positioning components comprising a plurality of positioning blocks (81) arranged at equal intervals, each of the positioning components being arranged at a different angle, the positioning assembly (8) further comprising a plurality of positioning blocks (82) hinged to the slide seat (72), a positioning protrusion (83) being fixedly provided on one side of the positioning block (82), and a positioning groove (84) matching the positioning protrusion (83) being provided on the positioning block (81).

9. The polyurethane film performance detection device according to claim 7, characterized in that: The guide rod (71) is provided with a guide groove (74), the arc-shaped sliding surface (73) is fixedly connected with a fixing rod (75), and the fixing rod (75) is slidably matched with the guide groove (74).

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