A polyurethane film performance detection device

Abstract

The application relates to the technical field of polyurethane product detection, and discloses a polyurethane film performance detection device which comprises a detection module mounted on a base, two vertically-symmetrically-distributed detection tables are arranged on the upper side of the detection module, the detection tables comprise detection plates, the two detection plates are matched to be used for pasting polyurethane films, the lower detection table is in sliding fit with the base, a first guiding and positioning mechanism is connected between the upper detection table and the base, and the upper detection table is driven by the detection module. The first positioning guiding mechanism can drive each rotating arm to synchronously rotate, the upper detection table can synchronously displace along with the rotating arm in a horizontal state, the sliding sleeve can drive the upper detection table to slide along the rotating arm when being driven by the detection module, the upper detection table can receive the same thrust force at the corners, the force can be uniformly applied to the polyurethane film, the peeling of the adhesive layer at a point with large stress can be avoided, and the detection accuracy of the adhesive layer bonding performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyurethane product detection, and particularly relates to a polyurethane film performance detection device. BACKGROUND

[0002] When the performance of the polyurethane film is detected, the polyurethane film is pasted between two test plates, and then the two test plates are subjected to vertical and opposite pulling force by a detection device, so that the adhesive peel strength of the polyurethane film can be measured, and the adhesive performance of the polyurethane film can be detected. The prior art can change the force angle of the detection device on the test plate to realize rich pasting performance data of the polyurethane film. For example, the patent with the publication number CN118533741A discloses a silane modified polyurethane sealant bonding performance detection device and method. When the sealant is detected, the overall deflection angle between the upper base disc, the lower base disc and the vertical direction can be flexibly changed, so that the sealant between the upper base disc and the lower base disc at different inclination angles can be stretched and peeled off, that is, whether the bonding strength of the sealant at different angles is different and the change amount can be judged.

[0003] However, the prior art still has the following defects: since the force applying column and the upper base disc are movably connected through the bending shaft, when the force applying column and the upper base disc are non-perpendicular, the pulling force received by the upper base disc cannot uniformly act on the glue layer, and the glue layer is prone to peel off at the edge with larger stress, thereby reducing the detection accuracy of the adhesive performance of the glue layer. SUMMARY

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

[0005] The purpose is to move the sliding sleeve rotating arm on the edge of the test plate flatly, apply stable and uniform pushing force to the test plate, make the glue layer uniformly stressed, and improve the detection accuracy.

[0006] The technical scheme of the present application is a polyurethane film performance detection device, which comprises a base, a detection module mounted on the base, two vertically symmetrical detection tables arranged on the upper side of the detection module, the detection tables comprising detection plates, the two detection plates being used for pasting polyurethane films, the lower side of the detection table being in sliding fit with the base, the upper side of the detection table being connected with the first guide positioning mechanism between the base and the detection module, and the upper side of the detection table being driven by the detection module; the first guide positioning mechanism comprising a guide frame and a brake assembly mounted in the guide frame; the guide frame comprising a sliding sleeve rotatably connected with the corner of the upper side of the detection table, the sliding sleeve being slidably connected with a rotating arm, the lower end of the rotating arm being rotatably connected with the base, and a plurality of rotating arms being arranged in a rectangular structure; the brake assembly comprising a brake block slidably connected with the upper end of the rotating arm and a driving part for moving the brake block.

[0007] After the polyurethane film is pasted between the two detection plates, the first guide positioning mechanism is rotated, each rotating arm is synchronously rotated, the upper side of the detection table is slid on the rotating arm through the sliding sleeve, the upper side of the detection table drives the lower side of the detection table to translate, the rotating arm is rotated to a detection angle, the detection module drives the sliding sleeve to slide straight on the rotating arm, the upper side of the detection plate is subjected to the same thrust at the corner, the polyurethane film layer pasted between the two detection plates can be uniformly stressed, and the detection accuracy is improved.

[0008] Further, the base comprises a bottom plate, the two symmetrical sides of the bottom plate are fixedly connected with vertical plates, a plurality of reinforcing rods are fixedly connected between the two vertical plates, and control holes are formed in the middle of the vertical plates.

[0009] In the vertical state of the rotating arm, the detection plate in the detection table can be taken out through the control hole, the polyurethane film and the detection plate can be pasted, and subsequent cleaning is facilitated.

[0010] Further, the detection table further comprises a flat plate, a connecting seat is fixedly connected to the flat plate, a plurality of T-shaped clamping strips are fixedly connected to the side of the detection plate facing the connecting seat, a clamping groove matched with the T-shaped clamping strip is formed in the connecting seat, and a heating module is mounted on the side of the connecting seat away from the detection plate.

[0011] The T-shaped clamping strip and the clamping groove are inserted and matched to facilitate the disassembly and assembly of the detection plate on the connecting seat, the polyurethane film can be pasted in an open environment after the detection plate is taken out, the stability of the polyurethane film and the detection plate can be ensured, the operation convenience is improved, a plurality of heating plates are mounted on the connecting seat, the temperature environment of the polyurethane film can be adjusted by controlling the heating temperature of the heating plate, the detection data is more abundant and referential in cooperation with the peeling test at different angles.

[0012] Further, the upper end of the rotating arm is slidably connected with an arc-shaped seat, the arc-shaped seat is fixedly installed on the base, and the guide frame further comprises a connecting piece, and the upper end of the rotating arm is rotatably connected with the connecting piece.

[0013] By adopting the technical scheme, the arc-shaped groove is formed in one side of the arc-shaped seat, the upper end of the rotating arm is slidably matched with the arc-shaped groove, and the sliding damping is arranged between the upper end of the rotating arm and the arc-shaped groove, the connecting piece can be held to drive the rotating arms to synchronously rotate, the peeling force test of the polyurethane adhesive sheet at different angles is realized, and after the connecting piece is released, the rotating arm stably hovers in the arc-shaped seat.

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

[0015] By adopting the technical scheme, when the hydraulic cylinder drives the driving plate to move to the left side, the wedge-shaped plate gradually contacts the guide wheel, the wedge-shaped plate applies a thrust force to the guide wheel, and the sliding sleeve slides along the rotating arm in a straight line.

[0016] Further, the arc-shaped tooth groove is formed in the arc-shaped seat, one side of the brake block is in clamping and matching connection with the arc-shaped tooth groove, and the spring is elastically connected between the other side of the brake block and the rotating arm; the driving component comprises a driving rod slidably connected with the rotating arm, one end of the driving rod is fixedly connected with the brake block, the other end of the driving rod is in sliding contact with a cam, the cam is coaxially connected with a gear, the gear is arranged on the outer side of the rotating arm, and the gear is in meshing transmission with the rack fixedly connected with the driving plate.

[0017] By adopting the technical scheme, the spring applies a pulling force to the brake block away from the arc-shaped tooth groove, the brake block is not in contact with the arc-shaped tooth groove, when the driving plate moves to the left side and the wedge-shaped plate is not in contact with the guide wheel, the rack is in meshing transmission with the gear to drive the cam to rotate by 180°, the cam drives the brake block to be clamped with the arc-shaped tooth groove through the driving rod, the rotation of the rotating arm is limited, and the stability of the rotating arm itself is improved when the guide wheel is pushed by the wedge-shaped plate.

[0018] Further, the second guide positioning mechanism is installed on the base, and is used for slidingly limiting the lower detection table, the second guide positioning mechanism comprises two guide rail frames; the guide rail frame comprises a guide rod rotatably connected with the base, the guide rod is in the shape of a cylinder, two sliding seats are sleeved on the guide rod, the sliding seat is fixedly connected with the lower detection table, and an arc-shaped sliding surface matched with the guide rod is formed in the upper portion of the sliding seat.

[0019] Using the above technical solution, the lower inspection platform, under the action of gravity, makes the arc-shaped sliding surface fit against the upper part of the guide rod. When the upper inspection platform moves under the rotation of the guide frame, the lower inspection platform moves synchronously on the guide rod.

[0020] Furthermore, the second guide positioning mechanism also includes a positioning component mounted on the guide rail frame; the positioning component includes a plurality of positioning parts evenly distributed at the end of the guide rod, the positioning part is composed of a plurality of positioning blocks I arranged at equal intervals, each positioning part is arranged at a different angle, the positioning component also includes a plurality of positioning blocks II hinged to the slide, a positioning protrusion is fixed on one side of the positioning block II, and a positioning groove adapted to the positioning protrusion is opened on the positioning block I.

[0021] Using the above technical solution, the arc-shaped sliding surface fits into the upper part of the guide rod under the action of gravity. At this time, the second positioning block does not contact the first positioning block. When the upper detection platform moves along the rotating arm under the thrust, the lower detection platform moves synchronously a certain distance and drives the second positioning block to abut against the first positioning block. 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, and a fixed rod is fixedly connected to the arc-shaped sliding surface, with the fixed rod slidingly engaging with the guide groove.

[0023] Using 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 one, which is perpendicular to the rotating arm, faces the positioning block two.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 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 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. This allows the force to be applied evenly to the polyurethane film, thereby preventing the adhesive layer from peeling off first through the point with greater force, and improving the detection accuracy of the adhesive layer bonding performance.

[0026] 2. The lower detection platform moves synchronously with the upper detection platform. The fixed rod and the guide groove work together to drive the guide rod to rotate, so that the positioning block one, which is perpendicular to the rotating arm, faces the positioning block two. This allows the deformation direction of the lower detection platform to be adaptively adjusted according to the rotation of the rotating arm, making it parallel to and opposite to the direction of the thrust. This further ensures that the force of the detection is evenly distributed on the polyurethane film, which helps to further improve the accuracy of the detection.

[0027] 3. The T-shaped clamping and slot insertion cooperation makes the detection plate and the connecting seat convenient to disassemble and assemble, so that the detection plate can be used to bond the polyurethane adhesive film in an open environment, ensures the bonding accuracy, and is convenient to clean after detection. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the application;

[0029] Figure 2 It is a schematic diagram of the internal structure of the base of the application;

[0030] Figure 3 It is a split schematic diagram of the two detection table structures of the application;

[0031] Figure 4 It is a schematic diagram of the detection module and the guide wheel structure of the application;

[0032] Figure 5 It is a split schematic diagram of the brake block and the driving piece structure of the application;

[0033] Figure 6 It is a sectional view schematic diagram of the rotating arm and the arc-shaped seat structure of the application;

[0034] Figure 7 It is a schematic diagram of the Figure 2 It is an enlarged schematic diagram of the structure at A in the application;

[0035] Figure 8 It is a schematic diagram of the sliding sleeve and the rotating arm structure of the application;

[0036] Figure 9 It is a schematic diagram of the guide rod and the sliding seat structure of the application;

[0037] Figure 10 It is a schematic diagram of the sliding seat and the fixed rod structure of the application;

[0038] Figure 11 It is a schematic diagram of the Figure 9 It is an anatomical enlarged schematic diagram of the structure at B in the application;

[0039] Figure 12 It is a schematic diagram of the positioning block structure from another perspective.

[0040] In the figure:

[0041] 1, base; 11, bottom plate; 12, vertical plate; 13, reinforcing rod; 2, detection table; 21, detection plate; 22, T-shaped clamping strip; 23, flat plate; 24, connecting seat; 3, heating module; 4, detection module; 41, hydraulic cylinder; 42, driving plate; 43, wedge-shaped plate; 44, rack; 5, guide frame; 51, sliding sleeve; 52, rotating arm; 53, arc-shaped seat; 54, connecting piece; 55, guide wheel; 56, arc-shaped tooth groove; 6, brake assembly; 61, brake block; 62, spring; 63, driving rod; 64, cam; 65, gear; 7, guide rail frame; 71, guide rod; 72, sliding seat; 73, arc-shaped sliding surface; 74, guide groove; 75, fixing rod; 8, positioning assembly; 81, positioning block one; 82, positioning block two; 83, positioning protrusion; 84, positioning groove; 9, support seat. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0043] Embodiment 1, refer to Figures 1-10 , for the first embodiment of the present application, a polyurethane film performance detection device is provided, which comprises a base 1, further comprising a detection module 4 mounted on the base 1, two vertically symmetrical detection tables 2 are arranged on the upper side of the detection module 4, the detection table 2 comprises a detection plate 21, the two detection plates 21 are used for pasting polyurethane film, the lower detection table 2 is in sliding fit with the base 1, the first guide positioning mechanism is connected between the upper detection table 2 and the base 1, and the upper detection table 2 is driven by the detection module 4; the first guide positioning mechanism comprises a guide frame 5 and a brake assembly 6 mounted in the guide frame 5; the guide frame 5 comprises a sliding sleeve 51 rotatably connected with the corner of the upper detection table 2, a rotating arm 52 is slidably connected in the sliding sleeve 51, the lower end of the rotating arm 52 is rotatably connected with the base 1, and a plurality of rotating arms 52 are arranged in a rectangular structure; the brake assembly 6 comprises a brake block 61 slidably connected on the upper end of the rotating arm 52, and a driving component for moving the brake block 61.

[0044] Specifically, after the polyurethane film is bonded between the two detection plates 21, the first guide positioning mechanism is rotated, each rotating arm 52 is synchronously rotated, the upper detection table 2 is slid on the rotating arm 52 through the sliding sleeve 51, the upper detection table 2 drives the lower detection table 2 to translate, after the rotating arm 52 is rotated to the detection angle, the detection module 4 drives the sliding sleeve 51 to slide straight on the rotating arm 52, the same thrust is applied to the corners of the upper detection plate 21, so that the polyurethane film layer bonded between the two detection plates 21 can be uniformly stressed, and the detection accuracy is improved.

[0045] Refer to Figure 1 With Figure 2The base 1 comprises a bottom plate 11, both sides of the bottom plate 11 are fixedly connected with vertical plates 12, a plurality of reinforcing rods 13 are fixedly connected between the two vertical plates 12, and a control hole is formed in the middle of the vertical plate 12.

[0046] Specifically, the rotating arm 52 can take out the detection plate 21 in the detection table 2 in the vertical state, so as to facilitate the bonding of the polyurethane film and the detection plate 21 and subsequent cleaning.

[0047] Referring to Figure 3 The detection table 2 further comprises a flat plate 23, the flat plate 23 is fixedly connected with a connecting seat 24, a plurality of T-shaped clamping strips 22 are fixedly connected to one side of the detection plate 21 facing the connecting seat 24, and a clamping groove matched with the T-shaped clamping strip 22 is formed in the connecting seat 24; a heating module 3 is installed on the side of the connecting seat 24 away from the detection plate 21.

[0048] Specifically, the T-shaped clamping strip 22 and the clamping groove are inserted and matched to facilitate the convenient disassembly of the detection plate 21 on the connecting seat 24, and the bonding of the polyurethane film can be carried out in an open environment after the detection plate 21 is taken out, so as to ensure the bonding stability of the polyurethane film and the detection plate 21 and improve the operation convenience; the heating module 3 adopts a plurality of heating plates installed on the connecting seat 24, the temperature environment of the polyurethane film can be adjusted by controlling the heating temperature of the heating plate, and the detection data is more abundant and referential in combination with the peeling test at different angles.

[0049] The length direction of the T-shaped clamping strip 22 is perpendicular to the sliding direction of the lower detection table 2, the T-shaped clamping strip 22 is in close abutment with the clamping groove when the detection plate 21 is stressed, and the sliding deviation of the detection plate 21 on the connecting seat 24 can be prevented.

[0050] In addition, anti-skid lines are fixedly arranged at both ends of the detection plate 21, the anti-skid lines can facilitate manual taking by the detection personnel, and the opposite sides of the two detection plates 21 are provided with bonding areas, and the polyurethane film can be bonded in the bonding areas.

[0051] Referring to Figure 2 and Figure 4 The upper end of the rotating arm 52 is slidably connected with an arc-shaped seat 53, and the arc-shaped seat 53 is fixedly installed on the base 1; and the guide frame 5 further comprises a connecting piece 54, and the upper end of the rotating arm 52 is rotatably connected with the connecting piece 54.

[0052] Specifically, an arc-shaped groove is formed in one side of the arc-shaped seat 53, the upper end of the rotating arm 52 is slidably matched with the arc-shaped groove, and a sliding damping is arranged between the upper end of the rotating arm 52 and the arc-shaped groove; the connecting piece 54 can be held to drive the rotating arms 52 to rotate synchronously, the peeling force test of the polyurethane film at different angles is realized, and the rotating arm 52 stably hovers in the arc-shaped seat 53 after the connecting piece 54 is released.

[0053] The connecting piece 54 comprises two cross bars, a plurality of connecting rods are fixedly connected between the two cross bars, and the cross bars are rotationally connected with the upper ends of the rotating arms 52.

[0054] With reference to Figure 7 In actual use, an angle scale is engraved on one side of the arc-shaped seat 53, and a pointer is fixedly connected with the upper end of the rotating arm 52, so that the specific rotation angle of the rotating arm 52 can be known through cooperation of the pointer and the angle scale.

[0055] With reference to Figure 4 The detection module 4 comprises a hydraulic cylinder 41 fixedly connected with the base 1, the hydraulic cylinder 41 is fixedly connected with a driving plate 42 at one end, the driving plate 42 is fixedly connected with a wedge-shaped plate 43 at the upper side, a guide wheel 55 is rotationally connected with the sliding sleeve 51, and the wedge-shaped plate 43 is in rolling contact with the guide wheel 55.

[0056] Specifically, when the hydraulic cylinder 41 drives the driving plate 42 to move to the left, the wedge-shaped plate 43 gradually comes into contact with the guide wheel 55, the wedge-shaped plate 43 exerts a pushing force on the guide wheel 55, and the sliding sleeve 51 slides along the rotating arm 52.

[0057] It can be understood that the bottom of the driving plate 42 is in sliding fit with the limiting groove formed in the upper side of the base 1, so that the driving plate 42 can move horizontally.

[0058] With reference to Figure 3 , Figure 8 The bottom corners of the upper detection table 2 are fixedly connected with support seats 9, the sliding sleeve 51 is hingedly connected with the support seats 9 through a connecting shaft, the support seats 9 are internally provided with pressure sensors in contact with the connecting shaft, the pressure sensors can monitor the pushing force of the sliding sleeve 51, so that the adhesive peeling data of the polyurethane adhesive sheet can be recorded.

[0059] In addition, when the support seats 9 are in contact with the lower flat plate 23, the distance between the two connecting seats 24 is fixed, so that the two detection plates 21 bonded with the polyurethane adhesive sheet can be connected with the corresponding connecting seats 24.

[0060] With reference to Figures 4-6 The arc-shaped seat 53 is internally provided with an arc-shaped tooth groove 56, the brake block 61 is in clamping fit with the arc-shaped tooth groove 56 at one side, and the brake block 61 is elastically connected with the spring 62 between the other side and the rotating arm 52; the driving component comprises a driving rod 63 in sliding connection with the rotating arm 52, the driving rod 63 is fixedly connected with the brake block 61 at one end, the other end is in sliding contact with a cam 64, the cam 64 is coaxially connected with a gear 65, the gear 65 is arranged on the outer side of the rotating arm 52, and the gear 65 is in meshing transmission with the rack 44 fixedly connected with the driving plate 42.

[0061] Specifically, the spring 62 exerts a pulling force on the brake block 61 away from the arc-shaped tooth groove 56, so that the brake block 61 is not in contact with the arc-shaped tooth groove 56, when the driving plate 42 moves to the left side and the wedge-shaped plate 43 is not in contact with the guide wheel 55, the rack 44 is engaged with the gear 65 to drive the cam 64 to rotate by 180°, the cam 64 drives the brake block 61 to be clamped with the arc-shaped tooth groove 56 through the driving rod 63, so that the rotation of the rotating arm 52 is limited, and the stability of the rotating arm 52 itself is improved when the guide wheel 55 is pushed by the wedge-shaped plate 43.

[0062] It can be understood that the rotating axis of the gear 65 and the rotating axis of the rotating arm 52 are located on the same axis, so that the rack 44 can drive the gear 65 to rotate at any angle of the rotating arm 52.

[0063] Referring to Figure 2 , Figure 9 , Figure 10 The base 1 is provided with a second guiding and positioning mechanism, which is used for slidingly limiting the lower detection table 2, and comprises two guide rail frames 7. The guide rail frame 7 comprises a guide rod 71 which is rotationally connected with the base 1, the guide rod 71 is in a cylindrical shape, and two sliding seats 72 are sleeved on the guide rod 71, the sliding seat 72 is fixedly connected with the lower detection table 2, and an arc-shaped sliding surface 73 which is matched with the guide rod 71 is formed in the upper portion of the sliding seat 72.

[0064] Specifically, the arc-shaped sliding surface 73 is attached to the upper portion of the guide rod 71 under the action of gravity, and the lower detection table 2 moves synchronously on the guide rod 71 when the upper detection table 2 is displaced under the rotation of the guide frame 5.

[0065] In actual work process, the base 1 is fixedly provided with a controller on one side, the controller comprises a control panel and a control module, the control module is connected with the hydraulic cylinder 41, the heating module 3 and the pressure sensor, the control panel can be used to control the extension amplitude of the hydraulic cylinder 41 and the heating temperature of the heating module 3, and the pressure value of the pressure sensor can be displayed.

[0066] Embodiment 2, referring to Figures 9-12 This is the second embodiment of the present application, which is different from the first embodiment in that the second guiding and positioning mechanism further comprises a positioning assembly 8 which is installed on the guide rail frame 7; the positioning assembly 8 comprises a plurality of positioning components which are uniformly distributed on the end portion of the guide rod 71, the positioning component is composed of a plurality of positioning blocks one 81 which are arranged at equal intervals, the positioning components are arranged at different angles, the positioning assembly 8 further comprises a plurality of positioning blocks two 82 which are hingedly connected with the sliding seat 72, the positioning block two 82 is fixedly provided with a positioning protrusion 83 on one side, and the positioning block one 81 is provided with a positioning groove 84 which is matched with the positioning protrusion 83.

[0067] Specifically, under the action of gravity, the arc-shaped sliding surface 73 is in contact with the upper part of the guide rod 71. At this time, the second positioning block 82 is not in contact with the first positioning block 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 second positioning block 82 to abut against the first positioning block 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.

[0068] Among them, reference Figure 11 The two ends of the positioning block 82 are rotatably connected to the slide block 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. This prevents the positioning block 82 from rotating due to excessive force when it abuts against the positioning block 81, and avoids the positioning block 82 and the positioning block 81 from abutting and shifting.

[0069] In addition, the contact surface angle of the first positioning block 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 towards the second positioning block 82, and the contact surface of the first positioning block 81 in the positioning component is set perpendicular to the rotating arm 52, so that the first positioning block 81 and the second positioning block 82 are stably abutted, so that the direction of force deformation of the lower detection stage 2 is parallel and opposite to the direction of force of the upper detection stage 2, thereby further ensuring that the force of detection is evenly distributed on the polyurethane film layer, which helps to further improve the detection accuracy.

[0070] Reference Figure 9 , Figure 10 The guide rod 71 has a guide groove 74, and a fixed rod 75 is fixedly connected to the arc-shaped sliding surface 73. The fixed rod 75 slides in conjunction with the guide groove 74.

[0071] Specifically, when the rotating arm 52 rotates, the lower detection platform 2 slides on the guide rod 71, and the fixed rod 75 cooperates with the guide groove 74 to drive the guide rod 71 to rotate, so that the positioning block 81, which is perpendicular to the rotating arm 52, faces the positioning block 82.

[0072] Among them, reference Figure 9 The guide groove 74 includes multiple parallel and equally spaced flat grooves, which are arranged parallel to the axis of the guide rod 71. A connecting inclined groove is provided between adjacent flat grooves, forming a 45° angle with 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, causing the positioning block 81, which is perpendicular to the rotating arm 52, to face the positioning block 82. The remaining structure is the same as in Embodiment 1.

[0073] In combination with Embodiment 1-2, the working principle of the present application is as follows: the polyurethane adhesive sheet is adhered to the bonding areas of the two detection plates 21 respectively, then the two detection plates 21 are connected to the corresponding flat plates 23 by inserting the T-shaped clamping strip 22 and the connecting seat 24, the rotating arm 52 is rotated by holding the connecting piece 54, the rotating arm 52 and the detection table 2 are arranged at a certain angle, the upper detection table 2 is slid on the guide rod 71 during the rotation of the rotating arm 52, the fixed rod 75 and the guide groove 74 cooperate to drive the guide rod 71 to rotate, the positioning block one 81 which is perpendicular to the rotating arm 52 is moved towards the positioning block two 82, the heating module 3 heats the polyurethane adhesive sheet to the test temperature, 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°, the driving rod 63 drives the brake block 61 to be clamped with the arc-shaped tooth groove 56, so that the rotating arm 52 cannot rotate, then the wedge-shaped plate 43 contacts the guide wheel 55 to make the sliding sleeve 51 slide along the rotating arm 52, after the positioning block two 82 is clamped with the positioning block one 81, the upper detection table 2 is subjected to a thrust force parallel to the rotating arm 52, and the lower detection table 2 is subjected to a force opposite to the thrust force, thereby completing the peeling detection of the non-vertical tensile force of the polyurethane adhesive sheet.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A polyurethane film performance testing device, comprising a base (1), the base (1) comprising a bottom plate (11), wherein vertical plates (12) are fixedly connected to both sides of the bottom plate (11) symmetrically, and a plurality of reinforcing rods (13) are fixedly connected between the two vertical plates (12), and an operating hole is provided in the middle of the vertical plate (12), characterized in that: Also include the detection module (4) installed on the base (1), the detection module (4) upper side is equipped with two vertical symmetry distribution detection platform (2), the detection platform (2) includes detection board (21), two detection board (21) cooperation is used for pasting polyurethane film, the lower side detection platform (2) and base (1) sliding fit, the upper side detection platform (2) and base (1) between the first guiding positioning mechanism is connected, and the upper side detection platform (2) is driven by detection module (4); The first guiding 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), the sliding sleeve (51) is slidably connected with a rotating arm (52), the lower end of the rotating arm (52) is rotatably connected with the base (1), and a plurality of rotating arms (52) are arranged in a rectangular structure, the upper end of the rotating arm (52) is slidably connected with an arc-shaped seat (53), the arc-shaped seat (53) is fixedly installed on the base (1), and the guide frame (5) further includes a connecting piece (54), the upper end of the rotating arm (52) is rotatably connected with the connecting piece (54); 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 moving the brake block (61).

2. The polyurethane slabstock performance testing apparatus of claim 1, wherein: The detection platform (2) further includes a flat plate (23), the flat plate (23) is fixedly connected with a connecting seat (24), a plurality of T-shaped clamping strips (22) are fixedly connected to the side of the detection board (21) facing the connecting seat (24), and a clamping groove matched with the T-shaped clamping strip (22) is formed in the connecting seat (24); The side of the connecting seat (24) away from the detection board (21) is provided with a heating module (3).

3. The polyurethane slabstock performance testing apparatus of claim 1, wherein: The detection module (4) includes a hydraulic cylinder (41) fixedly connected with the base (1), one end of the hydraulic cylinder (41) is fixedly connected with a driving plate (42), the upper side of the driving plate (42) is fixedly connected with a wedge-shaped plate (43), a guide wheel (55) is rotatably connected to the sliding sleeve (51), and the wedge-shaped plate (43) is in rolling contact with the guide wheel (55).

4. The polyurethane slabstock performance testing apparatus of claim 1, wherein: An arc-shaped tooth groove (56) is formed in the arc-shaped seat (53), one side of the brake block (61) is in clamping connection with the arc-shaped tooth groove (56), and the other side of the brake block (61) is elastically connected with the rotating arm (52) through a spring (62); The driving component includes a driving rod (63) slidably connected with the rotating arm (52), one end of the driving rod (63) is fixedly connected with the brake block (61), the other end is in sliding contact with a cam (64), the cam (64) is coaxially connected with a gear (65), the gear (65) is arranged on the outer side of the rotating arm (52), and the gear (65) is in meshing transmission with a rack (44) fixedly connected with the driving plate (42).

5. The polyurethane slabstock performance testing apparatus of claim 1, wherein: The base (1) is provided with a second guiding positioning mechanism, the second guiding positioning mechanism is used for sliding limiting the lower detection platform (2), and the second guiding positioning mechanism includes two guide rail frames (7). The guide rail frame (7) comprises a guide rod (71) rotatably connected with the base (1), the guide rod (71) is cylindrical, two sliding seats (72) are sleeved on the guide rod (71), the sliding seats (72) are fixedly connected with the lower detection table (2), and arc-shaped sliding surfaces (73) matched with the guide rod (71) are formed in the upper portions of the sliding seats (72).

6. The polyurethane slabstock performance testing apparatus of claim 5, wherein: The second guide 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 uniformly distributed on the end portions of the guide rod (71), the positioning components are composed of a plurality of positioning blocks one (81) which are equally spaced, the positioning components are arranged at different angles, the positioning assembly (8) further comprises a plurality of positioning blocks two (82) hingedly connected with the sliding seats (72), positioning protrusions (83) are fixedly arranged on one side of the positioning blocks two (82), and positioning grooves (84) matched with the positioning protrusions (83) are formed in the positioning blocks one (81).

7. The polyurethane slabstock performance testing apparatus of claim 5, wherein: A guide groove (74) is formed in the guide rod (71), and a fixing rod (75) is fixedly connected with the arc-shaped sliding surface (73) and in sliding fit with the guide groove (74).

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