Epoxy molding compound bonding force testing device

Abstract

The utility model discloses an epoxy molding compound bonding force testing device, which relates to the field of epoxy molding compound testing, and comprises a universal stretcher and an output end in the universal stretcher, the bottom surface of the output end is fixedly connected with a pull rod, one end of the pull rod far away from the output end is fixedly connected with an N-shaped connecting plate, and the N-shaped connecting plate is fixedly connected with the universal stretcher. And the bottom end of the N-shaped connecting plate is fixedly connected with a wedge-shaped clamp. According to the utility model, the epoxy molding compound is bonded on one surface of the metal sheet, the top end of the metal sheet clamps the two surfaces of the top end of the metal sheet through the two extrusion sheets in the wedge-shaped clamp, so that the top end of the metal sheet is prevented from warping, and the bottom end of the metal sheet fixes the epoxy molding compound through the fan-shaped opening of the fixed base; meanwhile, the side edge of the metal sheet is shielded through the adjusting plate to prevent the bottom end of the metal sheet from deforming, so that the metal sheet is prevented from deforming in the pulling process to avoid errors of test results.

Description

Technical Field

[0001] The utility model relates to the field of epoxy molding compound testing, in particular to an epoxy molding compound adhesion testing device. Background Art

[0002] Currently, there are many methods for testing the bonding performance of epoxy molding compounds. The traditional test method uses a mold with a metal sheet placed in the mold. The epoxy molding compound and the metal sheet are bonded together by injection molding using a transfer molding press. The sample of the epoxy molding compound and the metal sheet bonded together is removed from the mold. Then, a crystal pusher is used to apply a horizontal thrust from the bonding surface of the epoxy molding compound and the metal sheet to separate the epoxy molding compound from the metal sheet. The maximum thrust count value is recorded. The greater the thrust to separate the epoxy molding compound and the metal sheet, the better the bonding performance.

[0003] However, when applying horizontal thrust to the epoxy molding compound bonded to the metal sheet using this traditional testing method, the copper sheet may warp upward due to the force. Alternatively, when the bonding force is high, the pusher head may warp upward, causing the pusher head's thrust to be applied at a different point than the bonding surface between the epoxy molding compound and the metal sheet. Consequently, the force gauge displays a value that is not the bond strength between the epoxy molding compound and the metal sheet, affecting the determination of the epoxy molding compound's bonding performance. Therefore, a testing device is urgently needed to address this issue. Utility Model Content

[0004] The purpose of the present utility model is to provide an epoxy molding compound adhesion testing device to solve the problem proposed in the above background technology that the copper sheet is warped upward under pressure, and the pusher head of the crystal pusher may warp upward when the bonding force is large, resulting in the pusher head thrust point not being on the bonding surface between the epoxy molding compound and the metal sheet.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an epoxy molding compound adhesion testing device, comprising a universal stretching machine and an output end inside the universal stretching machine, a pull rod fixedly connected to the bottom surface of the output end, an N-shaped connecting plate fixedly connected to the end of the pull rod away from the output end, a wedge-shaped clamp fixedly connected to the bottom end of the N-shaped connecting plate, a movable plate is provided in the inner cavity of the wedge-shaped clamp, a driving member for pushing the movable plate to move is provided on the top surface of the movable plate, two clamping blocks sliding along the inner wall of the wedge-shaped clamp are provided on both sides of the movable plate, the two clamping blocks are placed on both sides of the metal sheet, a fixed base is provided under the wedge-shaped clamp, a movable adjustment plate is provided at the recess on one side of the fixed base, a fan-shaped opening is provided at the top of the fixed base, and the epoxy molding compound bonded to the metal sheet is stuck in the inner cavity of the fan-shaped opening.

[0006] Preferably, the driving member includes a push rod, the bottom end of the push rod is fixedly connected to the movable plate, the top end of the push rod is fixedly connected to a circular plate, one side of the wedge-shaped clamp is fixedly connected to a fixed plate, a rotating rod is rotatably connected between the two fixed plates, the outer wall of the rotating rod is fixedly connected to an L-shaped lever for pushing the circular plate, the outer wall of the push rod is sleeved with a spring, the top end of the spring is fixedly connected to the upper wall of the inner cavity of the wedge-shaped clamp, and the bottom end of the spring is fixedly connected to the top end of the movable plate.

[0007] Preferably, the opposite sides of the two clamping blocks are provided with grooves adapted to the movable plate, the two ends of the movable plate are slidably connected to the corresponding grooves, the top surfaces of the two clamping blocks are provided with fan-shaped grooves, one side of the wedge-shaped clamp is provided with two guide grooves, the inside of the two guide grooves are slidably connected with guide rods, and one end of the two guide rods is fixedly connected to one side of the corresponding clamping block.

[0008] Preferably, the internal thread connection of the fixed base is provided with four adjusting bolts, and one end of the four adjusting bolts is threadedly connected to the adjusting plate.

[0009] Preferably, an adjustment piece for adjusting the gap is provided between the adjustment plate and the fixed base.

[0010] Preferably, a bellows is provided inside the universal stretching machine, the fixed base is placed on the inner wall of the bellows, and the pull rod passes through the upper wall of the bellows and is fixedly connected to the output end.

[0011] The technical effects and advantages of the utility model are as follows: the utility model adheres epoxy molding compound to one side of a metal sheet, and the top of the metal sheet is clamped on both sides of the top of the metal sheet by two extrusion plates inside a wedge-shaped clamp to prevent the top of the metal sheet from warping, and the bottom of the metal sheet is fixed to the epoxy molding compound through a fan-shaped opening of a fixed base, and at the same time, the side of the metal sheet is shielded by an adjustment plate to prevent the metal sheet from deformation, thereby preventing the metal sheet from deformation during the pulling process and avoiding errors in the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the fixed base structure of the utility model.

[0014] Figure 3 This is a schematic diagram of the wedge-shaped clamp structure of the present utility model.

[0015] Figure 4 This is a schematic diagram of the wedge-shaped clamp structure of the present utility model.

[0016] In the figure: 1. Universal stretching machine; 11. Output end; 2. Pull rod; 3. N-shaped connecting plate; 4. Wedge-shaped clamp; 41. Fixed plate; 42. Rotating rod; 43. L-shaped lever; 44. Push rod; 45. Round plate; 46. Spring; 47. Moving plate; 48. Clamping block; 481. Groove; 482. Fan-shaped groove; 483. Guide rod; 49. Guide groove; 5. Metal sheet; 6. Adjustment plate; 7. Bellows box; 8. Fixed base; 81. Fan-shaped opening; 9. Epoxy molding compound; 10. Adjustment bolt; 12. Adjustment plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The utility model provides Figure 1-4 The epoxy molding compound adhesion testing device shown in the figure includes a universal stretching machine 1 and an output end 11 inside the universal stretching machine 1, a pull rod 2 is fixedly connected to the bottom surface of the output end 11, an end of the pull rod 2 away from the output end 11 is fixedly connected to an N-shaped connecting plate 3, the bottom end of the N-shaped connecting plate 3 is fixedly connected to a wedge-shaped clamp 4, a movable plate 47 is provided in the inner cavity of the wedge-shaped clamp 4, a driving member for pushing the movable plate 47 to move is provided on the top surface of the movable plate 47, two clamping blocks 48 for sliding along the inner wall of the wedge-shaped clamp 4 are provided on both sides of the movable plate 47, the two clamping blocks 48 are placed on both sides of the metal sheet 5, a fixed base 8 is provided below the wedge-shaped clamp 4, a movable adjusting plate 6 is provided at a recess on one side of the fixed base 8, a fan-shaped opening 81 is opened at the top end of the fixed base 8, and the epoxy molding compound 9 bonded to the metal sheet 5 is stuck in the inner cavity of the fan-shaped opening 81;

[0019] The pull rod 2 is driven upward by the output end 11, and the upward movement of the pull rod 2 drives the N-shaped connecting plate 3 to move upward, and the upward movement of the N-shaped connecting plate 3 drives the clamping block 48 to move upward. At this time, the clamping block 48 drives the top of the metal sheet 5 between the clamping blocks 48 to move upward. At this time, the fan-shaped opening 81 of the fixed base 8 fixes the epoxy molding material 9 to prevent the epoxy molding material 9 from moving upward, and then the bonding force between the epoxy molding material 9 and the metal sheet 5 is tested.

[0020] like Figure 1As shown, a bellows 7 is provided inside the universal stretching machine 1, a fixed base 8 is placed on the inner wall of the bellows 7, and a pull rod 2 passes through the upper wall of the bellows 7 and is fixedly connected to the output end 11. By setting the bellows 7, the temperature change inside the bellows 7 can be adjusted, and the bonding force between the epoxy molding material 9 and the metal sheet 5 at different temperatures can be tested.

[0021] like Figure 2 As shown, an adjustment plate 12 is provided between the adjustment plate 6 and the fixed base 8 to prevent the gap from being too small. By providing the adjustment plate 12, the gap between the adjustment plate 6 and the fixed base 8 can be prevented from being too small, thereby preventing the side edges of the adjustment plate 6 and the fixed base 8 from rubbing against the metal sheet 5 and affecting the deviation of the test data.

[0022] like Figure 2 As shown, four adjusting bolts 10 are threadedly connected to the interior of the fixed base 8 , and one end of the four adjusting bolts 10 is threadedly connected to the adjusting plate 6 .

[0023] like Figure 3 As shown, the driving member includes a push rod 44, the bottom end of the push rod 44 is fixedly connected to the movable plate 47, the top end of the push rod 44 is fixedly connected to the circular plate 45, one side of the wedge-shaped clamp 4 is fixedly connected to the fixed plate 41, a rotating rod 42 is rotatably connected between the two fixed plates 41, the outer wall of the rotating rod 42 is fixedly connected to the L-shaped lever 43 for pushing the circular plate 45, the outer wall of the push rod 44 is sleeved with a spring 46, the top end of the spring 46 is fixedly connected to the upper wall of the inner cavity of the wedge-shaped clamp 4, and the bottom end of the spring 46 is fixedly connected to the top of the movable plate 47;

[0024] The spring 46 drives the movable plate 47 to move downward, and the movable plate 47 drives the clamping block 48 to move downward. The clamping block 48 moves downward along the inner cavity of the wedge-shaped clamp 4, so that the two clamping blocks 48 squeeze and fix the metal sheet 5, and then fix the top of the metal sheet 5.

[0025] like Figure 4As shown, the opposite side of the two clamping blocks 48 is provided with a groove 481 adapted to the movable plate 47, and the two ends of the movable plate 47 are slidably connected to the corresponding groove 481, and the top surfaces of the two clamping blocks 48 are provided with fan-shaped grooves 482. One side of the wedge-shaped clamp 4 is provided with two guide grooves 49, and the interior of the two guide grooves 49 is slidably connected with a guide rod 483, and one end of the two guide rods 483 is fixedly connected to the corresponding one side of the clamping block 48. When the metal sheet 5 needs to be replaced, the L-shaped lever 43 is rotated to cause the circular plate 45 to fluctuate through the bottom end of the L-shaped lever 43, so that the circular plate 45 drives the push rod 44 to move upward, and the push rod 44 drives the movable plate 47 to move upward, and the movable plate 47 drives the clamping block 48 to move upward, and the clamping block 48 drives the guide rod 483 to move upward in the guide groove 49. Because the guide groove 49 is inclined, the two clamping blocks 48 are opened at this time, thereby facilitating the replacement of the metal sheet 5.

[0026] The working principle of the utility model is as follows: when in use, firstly bond one side of the epoxy molding compound 9 to the side of the metal sheet 5, then simultaneously place the metal sheet 5 between the adjustment plate 6 and the fixed base 8, and at the same time clamp the epoxy molding compound 9 in the fan-shaped opening 81 to fix the epoxy molding compound 9;

[0027] Then, the top of the metal sheet 5 is fixed, and the L-shaped lever 43 is first rotated. The rotation of the L-shaped lever 43 causes the bottom end of the L-shaped lever 43 to fluctuate upward on the circular plate 45, and then the circular plate 45 drives the push rod 44 to move upward, and the push rod 44 drives the movable plate 47 to move upward, and the movable plate 47 drives the clamping block 48 to move upward, and the clamping block 48 drives the guide rod 483 to move upward, so that the guide rod 483 moves upward along the guide groove 49 and opens the two clamping blocks 48. At this time, the L-shaped lever 43 is released, and the reaction force of the spring 46 causes the The movable plate 47 drives the clamping block 48 to move downward, and the clamping block 48 drives the guide rod 483 to move along the guide groove 49, so that the two clamping blocks 48 fix the metal sheet 5, and then the door of the blower box 7 is closed to seal it. At this time, the universal stretching machine 1 is started so that the output end 11 drives the pull rod 2 to move upward, and the N-shaped connecting plate 3 is driven upward by the pull rod 2, and the upward movement of the N-shaped connecting plate 3 drives the wedge-shaped clamp 4 to move upward, and the upward movement of the wedge-shaped clamp 4 drives the metal sheet 5 to move upward until the epoxy molding material 9 is separated from the metal sheet 5, and the bonding strength of the epoxy molding material 9 can be tested.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An epoxy molding compound adhesion testing device, comprising a universal stretching machine (1) and an output end (11) inside the universal stretching machine (1), characterized in that: The bottom surface of the output end (11) is fixedly connected to a pull rod (2), and the end of the pull rod (2) away from the output end (11) is fixedly connected to an N-shaped connecting plate (3), and the bottom end of the N-shaped connecting plate (3) is fixedly connected to a wedge-shaped clamp (4), and a movable plate (47) is provided in the inner cavity of the wedge-shaped clamp (4), and the top surface of the movable plate (47) is provided with a driving member for pushing the movable plate (47) to move, and two clamping blocks (48) are provided on both sides of the movable plate (47) for sliding along the inner wall of the wedge-shaped clamp (4), and the two clamping blocks (48) are placed on both sides of the metal sheet (5), and a fixed base (8) is provided below the wedge-shaped clamp (4), and a movable adjustment plate (6) is provided at a notch on one side of the fixed base (8), and a fan-shaped opening (81) is provided at the top of the fixed base (8), and the epoxy molding material (9) bonded to the metal sheet (5) is stuck in the inner cavity of the fan-shaped opening (81).

2. The epoxy molding compound adhesion testing device according to claim 1, characterized in that: The driving member includes a push rod (44), the bottom end of the push rod (44) is fixedly connected to the movable plate (47), the top end of the push rod (44) is fixedly connected to the circular plate (45), one side of the wedge-shaped clamp (4) is fixedly connected to the fixed plate (41), a rotating rod (42) is rotatably connected between the two fixed plates (41), the outer wall of the rotating rod (42) is fixedly connected to an L-shaped lever (43) for pushing the circular plate (45), the outer wall of the push rod (44) is sleeved with a spring (46), the top end of the spring (46) is fixedly connected to the upper wall of the inner cavity of the wedge-shaped clamp (4), and the bottom end of the spring (46) is fixedly connected to the top end of the movable plate (47).

3. The epoxy molding compound adhesion testing device according to claim 1, wherein: The opposite sides of the two clamping blocks (48) are provided with grooves (481) adapted to the movable plate (47), and the two ends of the movable plate (47) are slidably connected to the corresponding grooves (481). The top surfaces of the two clamping blocks (48) are provided with fan-shaped grooves (482). One side of the wedge-shaped clamp (4) is provided with two guide grooves (49), and the interiors of the two guide grooves (49) are slidably connected with guide rods (483), and one end of the two guide rods (483) is fixedly connected to one side of the corresponding clamping block (48).

4. The epoxy molding compound adhesion testing device according to claim 1, wherein: Four adjusting bolts (10) are connected to the internal thread of the fixed base (8), and one end of the four adjusting bolts (10) is threadedly connected to the adjusting plate (6).

5. The epoxy molding compound adhesion testing device according to claim 1, wherein: An adjustment piece (12) for adjusting the gap is provided between the adjustment plate (6) and the fixed base (8).

6. The epoxy molding compound adhesion testing device according to claim 1, characterized in that: The universal stretching machine (1) is provided with a bellows (7) inside, the fixed base (8) is placed on the inner wall of the bellows (7), and the pull rod (2) passes through the upper wall of the bellows (7) and is fixedly connected to the output end (11).

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