Device for testing heat resistance of hyperbranched solvent-free polyurethane adhesive

Abstract

The utility model provides superbranched solventless polyurethane adhesive heat resistance detection device relates to the field of adhesive detection, including base, both ends of base all are fixedly connected with end plate, one end of base installation connection has arc electric heating plate. The utility model discloses setting up the flat -slot in fixed detection seat and combination detection seat, realizes the quick card of experimental board and installs, utilizes electric cylinder drive to draw simultaneously, according to the output force data of electric cylinder and the adhesive deformation, falling off etc. State that detection shooting head records, realizes the quick detection of adhesive heat resistance, through the thread cooperation of adjusting shaft and inlaying screw nut, can adjust the relative distance of combination detection seat and puller seat nimblely, with the change of the relative position between fixed detection seat and combination detection seat under static, not only can adapt the placing demand of the experimental board of different thickness adhesive, but also can complete the fast fixing position of experimental board in the adjustment process simultaneously.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of adhesive detection, especially superbranched solventless polyurethane adhesive heat resistance detection device. BACKGROUND

[0002] In the field of adhesive performance detection, heat resistance is one of the core indicators for evaluating the application value of superbranched solventless polyurethane adhesive, which directly determines the reliability of the adhesive in high-temperature service scenarios such as electronic packaging, automobile manufacturing, and high-end building materials. The commonly used adhesive heat resistance detection device is represented by an oven holding force tester. This type of equipment mainly evaluates performance by vertically hanging the test plate with the sample attached, suspending weights in the oven, and recording the adhesive and detached time. However, the experimental plate fixing method in the traditional detection method is relatively cumbersome, relying mainly on bolt fastening or clamp clamping. Not only does it need to be repeatedly calibrated and positioned, but it is also prone to tilting of the experimental plate due to uneven installation force, causing the adhesive stress area to shift, directly affecting the accuracy of the detection data. The preparation process from the installation and position calibration of the experimental plate to the start of detection takes a long time, directly affecting the detection efficiency of the detection experiment, and it is also difficult to achieve synchronous monitoring of the pulling force and the deformation state of the adhesive, making it impossible to quickly establish a quantitative evaluation model of heat resistance.

[0003] Therefore, it is necessary to provide a new superbranched solventless polyurethane adhesive heat resistance detection device to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a superbranched solventless polyurethane adhesive heat resistance detection device.

[0005] The superbranched solventless polyurethane adhesive heat resistance detection device provided by the utility model comprises a base, end plates fixedly connected to both ends of the base, an arc-shaped electric heating plate installed and connected to one end of the base, side supports fixedly connected to the side walls of the base, and a detection and shooting head installed and connected to the side supports.

[0006] Preferably, flat clamping grooves are arranged in the fixed detection seat and the combined detection seat, and through openings are arranged on the opposite sides of the two flat clamping grooves.

[0007] Preferably, a longitudinal groove is arranged on the base, the card-in sliding block is in sliding connection with the longitudinal groove, one end of the longitudinal groove is provided with a mounting port, and the electric cylinder is fixedly installed in the mounting port.

[0008] Preferably, two horizontal rods are symmetrically and fixedly connected between the two end plates, and the two ends of the pulling seat are provided with side blocks, and the two side blocks are respectively in sliding connection with the two horizontal rods.

[0009] Preferably, a pre-adhesion assembly is arranged between the combined detection seat and the pulling seat, the pre-adhesion assembly comprises two limiting rods, the two limiting rods are respectively in fixed connection with the two ends of the combined detection seat, the two limiting rods are respectively in sliding connection with the two ends of the pulling seat, an adjusting shaft is rotatably connected to the middle position of the combined detection seat, an embedded nut is in mounting connection with the middle position of the pulling seat, the adjusting shaft is a threaded rod, and the adjusting shaft is in threaded connection with the embedded nut.

[0010] Preferably, one end of the adjusting shaft is in mounting connection with a handle, and the handle is externally wrapped with a rubber jacket.

[0011] Compared with the related art, the hyperbranched solvent-free polyurethane adhesive heat resistance detection device has the following beneficial effects: 1. The flat-shaped clamping grooves arranged in the fixed detection seat and the combined detection seat can realize quick clamping and mounting of the experimental plate, without the need of complex fixing procedures, so that the detection preparation time is greatly shortened, and the output force data of the electric cylinder and the adhesive deformation, falling and other states recorded by the detection shooting head are utilized to realize quick detection of the adhesive heat resistance after direct clamping and placement, and the device is more convenient than the traditional mounting and fastening mode. 2. The threaded cooperation of the adjusting shaft and the embedded nut and the guiding action of the two symmetrical limiting rods can flexibly and quickly adjust the relative distance between the combined detection seat and the pulling seat, and the relative position between the fixed detection seat and the combined detection seat under the static state is changed, so that the placement requirements of the experimental plate corresponding to the adhesive of different thicknesses can be adapted, and the experimental plate can be ensured to be tightly attached to the side wall of the clamping groove, the clamping and positioning of the experimental plate are simultaneously completed in the adjusting process, the device is very quick and convenient, and errors caused by loosening of the experimental plate in the detection process are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A structure schematic view of a preferred embodiment of the utility model; Figure 2 A structure schematic view of a preferred embodiment of the utility model; Figure 1 An exploded structure schematic view of a preferred embodiment of the utility model; Figure 3 A structure schematic view of a preferred embodiment of the utility model; Figure 2 A structure schematic view of a preferred embodiment of the utility model;

[0013] The figure mark: 1, base; 11, end plate; 2, arc-shaped electric heating plate; 3, side support; 31, detection shooting head; 4, fixed detection seat; 41, combined detection seat; 42, pulling seat; 43, clamping sliding block; 44, electric cylinder; 5, cross rod; 51, side block; 6, limiting rod; 7, adjusting shaft; 71, handle; 8, embedded nut. DETAILED DESCRIPTION

[0014] The utility model will be further explained in connection with the drawings and implementation.

[0015] Please refer to Figures 1 to 3 , the over-branched solvent-free polyurethane adhesive heat resistance detection device includes: base 1, both ends of base 1 are fixedly connected with end plate 11, one end of base 1 is installed and connected with arc-shaped electric heating plate 2, the side wall of base 1 is fixedly connected with side support 3, and detection shooting head 31 is installed and connected on side support 3;Quick detection mechanism, the quick detection mechanism includes fixed detection seat 4, and fixed detection seat 4 is fixedly connected with the end plate 11 at one end, one side of fixed detection seat 4 is provided with combined detection seat 41, one side of combined detection seat 41 is provided with pulling seat 42, and clamping sliding block 43 is arranged at the lower end of pulling seat 42, and electric cylinder 44 is fixedly installed in the inside of base 1.

[0016] In the specific implementation process, as shown in Figure 1 And Figure 3 , flat clamping grooves are arranged in fixed detection seat 4 and combined detection seat 41, and the opposite sides of the two flat clamping grooves are provided with through openings.

[0017] It should be noted that: two experimental boards are quickly clamped into the flat clamping grooves in fixed detection seat 4 and combined detection seat 41 respectively, the electric cylinder 44 is started, the telescopic end of the electric cylinder 44 drives the clamping sliding block 43 to drive the pulling seat 42 to slide along the longitudinal recess of the base 1, the pulling seat 42 drives the combined detection seat 41 to generate pulling force, and according to the output force data of the electric cylinder 44 and the adhesive deformation, shedding and other states recorded by the detection shooting head 31, the heat resistance (pulling force and temperature adaptation relationship) of the adhesive is quickly detected; The size of the slot of the flat clamping groove is matched with the experimental board, the experimental board can be quickly clamped and positioned, and transverse movement of the experimental board during detection is avoided; The aperture of the through opening is matched with the diameter of the cylindrical protrusion on the experimental board, when the experimental board is clamped into the clamping groove, the cylindrical protrusion can pass through the through opening, so that the adhesive area between the two experimental boards is completely exposed in the heating range of the arc-shaped electric heating plate 2, ensuring that the heating action accurately acts on the detection object, and also providing a clear observation angle for subsequent monitoring of the adhesive deformation.

[0018] Reference Figure 1 And Figure 2As shown, the base 1 is provided with a longitudinal groove, the clamping sliding block 43 is in sliding connection with the longitudinal groove, and one end of the longitudinal groove is provided with a mounting port, and the electric cylinder 44 is fixedly installed in the mounting port.

[0019] It should be noted that the extension direction of the longitudinal groove is consistent with the arrangement direction of the fixed detection seat 4 and the combined detection seat 41, which provides a stable sliding track for the clamping sliding block 43, ensures that the pulling seat 42 drives the combined detection seat 41 to move linearly, and avoids uneven stress on the adhesive during pulling.

[0020] Reference Figure 1 and Figure 3 As shown, two end plates 11 are symmetrically and fixedly connected with two cross rods 5, and the two ends of the pulling seat 42 are provided with side blocks 51, and the two side blocks 51 are respectively in sliding connection with the two cross rods 5.

[0021] It should be noted that the two cross rods 5 are parallel and arranged in the same direction as the longitudinal groove, and the side block 51 is provided with a sliding hole matched with the cross rod 5. By using the sliding cooperation of the side block 51 and the cross rod 5, the sliding of the pulling seat 42 can be assisted and guided, and the pulling seat 42 can be prevented from tilting or shaking due to unilateral stress.

[0022] Reference Figure 3 As shown, a pre-adhesion assembly is arranged between the combined detection seat 41 and the pulling seat 42, the pre-adhesion assembly includes two limiting rods 6, the two limiting rods 6 are respectively fixedly connected with the two ends of the combined detection seat 41, the two limiting rods 6 are respectively in sliding connection with the two ends of the pulling seat 42, a regulating shaft 7 is rotatably connected to the middle position of the combined detection seat 41, and an embedded nut 8 is installed and connected to the middle position of the pulling seat 42. The regulating shaft 7 is a threaded rod, and the regulating shaft 7 is in threaded connection with the embedded nut 8.

[0023] It should be noted that the two opposite limiting rods 6 can limit the movement direction of the combined detection seat 41 relative to the pulling seat 42. The rotating of the regulating shaft 7 is controlled, and since the regulating shaft 7 is in threaded connection with the embedded nut 8 on the pulling seat 42, the relative displacement between the combined detection seat 41 and the pulling seat 42 is realized, until the opposite side of the two experimental plates is tightly attached to the side wall of the flat clamping groove. Not only can the fastening of the experimental plates be quickly completed, but also the spacing placement requirements of the experimental plates corresponding to different thicknesses of adhesives can be adapted.

[0024] Reference Figure 3 As shown, one end of the regulating shaft 7 is installed and connected with a handle 71, and the outside of the handle 71 is wrapped with a rubber sleeve.

[0025] It should be noted that the handle 71 and the regulating shaft 7 are integrally formed, and the outer shape is designed as a circle, which is convenient for the operator to hold and exert force, and reduces the labor intensity of the adjusting operation. The rubber sleeve is made of anti-skid and wear-resistant butyronitrile rubber material, which can increase the friction between the hand and the handle 71, avoid slipping during adjustment, buffer, reduce the compression of the hand of the operator caused by long-time holding, and improve the operation comfort.

[0026] The working principle of the hyperbranched solvent-free polyurethane adhesive heat resistance detection device is as follows: first, the two experimental plates coated with target adhesive are pretreated, so that the cylindrical protrusions on the two plates are aligned and fixed with the through openings on the fixed detection seat 4 and the combined detection seat 41, then the two experimental plates are quickly clamped into the flat clamping grooves in the fixed detection seat 4 and the combined detection seat 41, the structure of the flat clamping groove limits the lateral displacement of the experimental plate, and the area where the adhesive is located (between the two cylindrical protrusions) is located between the arc-shaped electric heating plates 2, so that the pre-placed positioning is completed, and compared with the traditional complicated installation and fastening work, the subsequent heat resistance detection can be quickly performed.

[0027] Then, the handle 71 of the outer rubber sleeve is rotated to drive the adjusting shaft 7 of the threaded rod structure to rotate, since the adjusting shaft 7 is threadedly connected with the embedded screw sleeve 8 on the pulling seat 42, and the limiting rod 6 limits the relative rotation of the combined detection seat 41 and the pulling seat 42, the rotating movement of the adjusting shaft 7 is converted into the linear relative displacement between the combined detection seat 41 and the pulling seat 42, until the opposite side of the two experimental plates is tightly attached to the flat clamping groove side wall, the tight positioning of the experimental plate is completed, and the spacing placement requirements of the experimental plate corresponding to the adhesive of different thicknesses can also be met.

[0028] After positioning, the arc-shaped electric heating plate 2 (prior art) is started and heats the adhesive area, and the detection shooting head 31 (prior art) on the side bracket 3 is started at the same time, so as to record the state change of the adhesive in the heating process in real time; then the electric cylinder 44 inside the base 1 is started, the telescopic end of the electric cylinder 44 drives the pulling seat 42 to slide along the longitudinal groove of the base 1 by clamping the sliding block 43, and the pulling seat 42 keeps a stable sliding posture by the horizontal rod 5 between the side block 51 and the two end plates 11, the pulling seat 42 drives the combined detection seat 41 to generate a pulling force, according to the output force data of the electric cylinder 44 and the state of the adhesive deformation and falling recorded by the detection shooting head 31, the heat resistance of the adhesive (the relationship between the pulling force and the temperature) is quickly detected.

[0029] The above is only an embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A device for testing the heat resistance of hyperbranched solvent-free polyurethane adhesives, characterized in that, include: The base (1) has end plates (11) fixedly connected to both ends of the base (1), an arc-shaped electric heating plate (2) is installed and connected to one end of the base (1), a side bracket (3) is fixedly connected to the side wall of the base (1), and a detection camera (31) is installed and connected to the side bracket (3). The quick testing mechanism includes a fixed testing seat (4), which is fixedly connected to an end plate (11) at one end. A combined testing seat (41) is provided on one side of the fixed testing seat (4), and a pulling seat (42) is provided on one side of the combined testing seat (41). A snap-in slider (43) is provided at the lower end of the pulling seat (42). An electric cylinder (44) is fixedly installed inside the base (1).

2. The heat resistance testing device for hyperbranched solvent-free polyurethane adhesives according to claim 1, characterized in that, Both the fixed detection seat (4) and the combined detection seat (41) are provided with flat slots, and each of the two flat slots has a through opening on the opposite side.

3. The heat resistance testing device for hyperbranched solvent-free polyurethane adhesives according to claim 1, characterized in that, The base (1) is provided with a vertical groove, the snap-in slider (43) is slidably connected to the vertical groove, one end of the vertical groove is provided with an installation port, and the electric cylinder (44) is fixedly installed in the installation port.

4. The heat resistance testing device for hyperbranched solvent-free polyurethane adhesives according to claim 1, characterized in that, Two crossbars (5) are symmetrically fixedly connected between the two end plates (11). Both ends of the traction seat (42) are provided with side blocks (51), and the two side blocks (51) are slidably connected to the two crossbars (5) respectively.

5. The heat resistance testing device for hyperbranched solvent-free polyurethane adhesives according to claim 1, characterized in that, A pre-fitting assembly is provided between the combined detection seat (41) and the traction seat (42). The pre-fitting assembly includes two limiting rods (6). The two limiting rods (6) are fixedly connected to both ends of the combined detection seat (41) and slidably connected to both ends of the traction seat (42). An adjusting shaft (7) is rotatably connected at the middle position of the combined detection seat (41). An embedded threaded sleeve (8) is installed and connected at the middle position of the traction seat (42). The adjusting shaft (7) is a threaded rod and is threadedly connected to the embedded threaded sleeve (8).

6. The heat resistance testing device for hyperbranched solvent-free polyurethane adhesives according to claim 5, characterized in that, One end of the adjusting shaft (7) is connected to a handle (71), and the handle (71) is covered with a rubber sleeve.

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