Peeling test clamp and testing machine for aluminum foil heat sealing strength test

Abstract

The utility model relates to a peeling test fixture and a testing machine for aluminum foil heat sealing strength test, which belong to the technical field of test equipment and comprise a fixed fixture and a movable fixture, the fixed fixture comprises a fixed support plate, a movable pressure plate I, a guide pillar I and a pressing mechanism I, and the movable fixture comprises a movable support plate, a movable pressure plate II, a guide pillar II and a pressing mechanism II. A first positioning block is installed in the middle of the fixed supporting plate and provided with a first positioning groove, a first positioning pressing block is arranged above the first positioning block, and a first positioning protrusion is arranged at the bottom of the first positioning pressing block. A second positioning block is installed in the middle of the movable supporting plate, and a second positioning groove is formed in the top of the second positioning block. A second positioning pressing block installed on the second movable pressing plate is arranged above the second positioning block, and a second positioning protrusion is arranged at the bottom of the second positioning pressing block. According to the utility model, the two ends of the sample can be quickly and accurately positioned, the axis of the sample is more accurately overlapped with the center line of the clamp, the stripping integrity of the sample is improved, and the measurement result is more accurate.

Description

Technical Field

[0001] The utility model relates to a peeling test fixture and a testing machine for aluminum foil heat-sealing strength testing, belonging to the technical field of testing equipment. Background Art

[0002] Medicinal aluminum foil is generally made of electrolytic aluminum with a purity of more than 99% through calendering. Aluminum foil is non-toxic and tasteless, has excellent conductivity and light-shielding properties, has extremely high moisture resistance, gas barrier and taste retention, and can most effectively protect the packaged objects. It is a packaging material that has not yet been replaced, so this packaging form is widely used in the field of pharmaceutical packaging. Its production process is to place the medicine in the pit of the plastic hard sheet formed by blistering, and then use a piece of aluminum foil that has been gravure printed and coated with a protective agent and adhesive to heat-seal the plastic hard sheet. The tensile strength at the heat-sealed seam is the heat-sealing strength.

[0003] The heat seal strength reflects the sealing of the drug packaging, and this index is closely related to the safety and stability of the drug. At present, the measurement of the heat seal strength of pharmaceutical aluminum foil in China is achieved by using an electronic peel tester. At present, when the clamp of the electronic peel tester clamps the sample, the sample axis and the center line of the clamp do not coincide, causing the sample to break obliquely, resulting in incomplete peeling of the sample and inaccurate measured data. Utility Model Content

[0004] The utility model provides a peeling test fixture for aluminum foil heat sealing strength test, which solves the problem that when the current fixture clamps the sample, the axis of the sample and the center line of the fixture do not coincide, causing the sample to rupture obliquely, resulting in incomplete peeling of the sample and inaccurate measured data.

[0005] The utility model provides a peeling test fixture for aluminum foil heat sealing strength test, comprising a fixed fixture and a movable fixture, the fixed fixture comprising a fixed support plate, a movable pressure plate, a guide column, a clamping mechanism is arranged above the movable pressure plate, the movable fixture comprises a movable support plate, a movable pressure plate, a guide column, a clamping mechanism is arranged above the movable pressure plate, a positioning block is arranged in the middle of the fixed support plate, a positioning groove is arranged at the top of the positioning block, the right end of the positioning groove extends to the right side wall of the positioning block, a positioning pressure block is arranged above the positioning block, and a positioning pressure block matched with the positioning groove is arranged at the bottom of the positioning pressure block A positioning protrusion and a spring are sleeved on a guide column under the movable pressure plate; a positioning block is installed in the middle of the movable support plate, a positioning groove is provided on the top of the positioning block, and the left end of the positioning groove extends to the left side wall of the positioning block, a positioning pressure block installed on the movable pressure plate is provided above the positioning block, and a positioning protrusion matching the positioning groove is provided at the bottom of the positioning pressure block, and a spring is sleeved on the guide column under the movable pressure plate, the center line of the positioning groove is the same horizontal line as the center line of the positioning groove, and coincides with the center line of the fixed fixture and the movable fixture, and the width of the positioning groove is equal to that of the positioning groove.

[0006] As a preferred embodiment, there are multiple positioning blocks, each of which is equipped with a positioning pressure block, and the widths of the positioning grooves on the multiple positioning blocks are not equal in the front-to-back direction, which can be applicable to test samples of various widths and has a wider range of applications.

[0007] As a preferred embodiment, each positioning block 1 is equipped with a positioning block 2, and each positioning block 2 is equipped with a positioning pressure block 2. The widths of the positioning grooves 2 on multiple positioning blocks 2 in the front-to-back direction are not equal, which can be applicable to test samples of various widths and has a wider range of applications.

[0008] As a preferred embodiment, a plug-in column 1 is fixed to the bottom of the positioning block 1 and the top of the positioning pressure block 1, and a plug-in hole 1 that is interference fit with the plug-in column 1 is provided at the top of the fixed support plate and the bottom of the movable pressure plate 1, so that the installation and replacement of the positioning block 1 and the positioning pressure block 1 is more convenient and quick.

[0009] As a preferred embodiment, the bottom of the positioning block 2 and the top of the positioning pressure block 2 are both fixed with a plug-in column 2, and the top of the movable support plate and the bottom of the movable pressure plate 2 are both provided with a plug-in hole 2 that is interference fit with the plug-in column 2, making the installation and replacement of the positioning block 2 and the positioning pressure block 2 more convenient and quick.

[0010] As a preferred embodiment, rubber pads are fixed to the tops of positioning protrusions one and two, a dovetail-shaped anti-slip protrusion is provided on the top of the rubber pads, and anti-slip grooves cooperating with the anti-slip protrusions are provided on the bottoms of positioning protrusions one and two. The rubber pads can better protect the samples and prevent the samples from being crushed and broken.

[0011] As a preferred embodiment, a clamping mechanism includes a support plate fixed on the top of a guide column, an adjusting screw sleeve is fixed in the middle of the support plate, an adjusting stud is connected inside the adjusting screw sleeve, the bottom of the adjusting stud is in contact with the top of a movable pressure plate, a rotating rod is fixed on the top of the adjusting stud, and the bottom of the guide column is fixed on a fixed support plate. By turning the rotating rod, the adjusting stud is driven to rotate, thereby conveniently adjusting the height position of the movable pressure plate.

[0012] As a preferred embodiment, the clamping mechanism two includes a support plate two fixed on the top of the guide column two, an adjusting screw sleeve two is fixed in the middle of the support plate two, an adjusting stud two is connected inside the adjusting screw sleeve two, the bottom of the adjusting stud two is in contact with the top of the movable pressure plate two, a rotating ring is fixed on the top of the adjusting stud two, a fixed plate is fixed at the bottom of the front and rear ends of the support plate two, the fixed plate and the bottom of the guide column two are both fixed on the movable support plate, and the adjusting stud two is driven to rotate by twisting the rotating ring, thereby conveniently adjusting the height position of the movable pressure plate two.

[0013] The utility model also provides a peeling tester for aluminum foil heat sealing strength test, comprising a tester body and the above-mentioned peeling test fixture for aluminum foil heat sealing strength test.

[0014] The utility model has the following beneficial effects:

[0015] By arranging a positioning block 1 and a positioning pressure block 1 on the fixed fixture, and then arranging a positioning groove 1 and a positioning protrusion 1 on the positioning block 1 and the positioning pressure block 1 respectively, and arranging a positioning block 2 and a positioning pressure block 2 on the movable fixture, and then arranging a positioning groove 2 and a positioning protrusion 2 on the positioning block 2 and the positioning pressure block 2 respectively, the center line of the positioning groove 1 and the center line of the positioning groove 2 are the same horizontal line and coincide with the center lines of the fixed fixture and the movable fixture, and the widths of the positioning groove 1 and the positioning groove 2 in the front-to-back direction are equal, the two ends of the sample can be quickly and accurately positioned, the axis of the sample and the center line of the fixture coincide more accurately, the integrity of the sample peeling is improved, and the measurement result is more accurate.

[0016] Springs 1 and 2 are provided below the movable pressing plate 1 and the movable pressing plate 2, respectively. The springs 1 and 2 will lift the movable pressing plate 1 and the movable pressing plate 2 in a natural state, so that both ends of the sample can be placed in the positioning grooves 1 and 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the peeling tester;

[0018] Figure 2 for Figure 1 A partial structural diagram of

[0019] Figure 3It is a schematic diagram of the left side structure of the fixing fixture;

[0020] Figure 4 It is a schematic diagram of the structure on the left side of the movable fixture;

[0021] Figure 5 It is a schematic diagram of the main structure of the positioning block 1;

[0022] In the figure: 1. Fixing fixture; 11. Fixing support plate; 12. Guide column 1; 13. Spring 1; 14. Active pressure plate 1; 15. Positioning block 1; 16. Support plate 1; 17. Adjusting stud 1; 18. Connecting column 1; 19. Positioning block 1; 110. Positioning groove 1; 111. Positioning protrusion 1; 112. Adjusting screw sleeve 1; 113. Rotating rod; 2. Active fixture; 21. Positioning groove 2; 22. Active support plate; 23. Positioning block 2; 24. Connecting plate; 25. Guide column 2; 26. Connecting column 2; 27. Spring 2; 28. Positioning protrusion 2; 29. ​​Positioning block 2; 210. Active pressure plate 2; 211. Support plate 2; 212. Adjusting screw sleeve 2; 213. Adjusting stud 2; 214. Rotating ring; 215. Fixed plate; 3. Testing machine body; 4. Rubber pad; 5. Anti-slip protrusion. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with embodiments.

[0024] Embodiment 1, as Figures 1 to 5As shown, the utility model provides a peeling test fixture for aluminum foil heat sealing strength test, including a fixed fixture 1 and a movable fixture 2, the fixed fixture 1 includes a fixed support plate 11, a movable pressure plate 14, and a guide column 12, a clamping mechanism 1 is provided above the movable pressure plate 14, the movable fixture 2 includes a movable support plate 22, a movable pressure plate 210, and a guide column 25, a clamping mechanism 2 is provided above the movable pressure plate 210, a positioning block 19 is installed in the middle of the fixed support plate 11, a positioning groove 110 is provided on the top of the positioning block 19, the right end of the positioning groove 110 extends to the right side wall of the positioning block 19, a positioning block 15 installed on the movable pressure plate 14 is provided above the positioning block 19, and a positioning block 15 is provided at the bottom with a positioning groove 110 that cooperates with the positioning groove 110. A positioning protrusion 111 is provided, and a spring 13 is sleeved on the guide column 12 below the movable pressure plate 14; a positioning block 23 is installed in the middle of the movable support plate 22, and a positioning groove 21 is provided on the top of the positioning block 23, and the left end of the positioning groove 21 extends to the left side wall of the positioning block 23, and a positioning pressing block 29 installed on the movable pressure plate 210 is provided above the positioning block 23, and a positioning protrusion 28 matching the positioning groove 21 is provided at the bottom of the positioning pressing block 29, and a spring 27 is sleeved on the guide column 25 below the movable pressure plate 210, and the center line of the positioning groove 110 and the center line of the positioning groove 21 are the same horizontal line and coincide with the center line of the fixed fixture 1 and the movable fixture 2, and the width of the positioning groove 110 and the positioning groove 21 in the front and rear directions is equal. The positioning groove 110 and the positioning protrusion 111 are clearance matched, and the positioning groove 21 and the positioning protrusion 28 are also clearance matched.

[0025] During operation: the clamping mechanism 1 releases the movable pressing plate 14, and the movable pressing plate 14 rises under the action of the spring 13, so that the left end of the sample can be placed in the positioning groove 110. When placing the sample, the left end of the sample is flush with the left end surface of the positioning groove 110, and the front and rear side walls of the positioning groove 110 quickly and accurately locate the front and rear side walls of the left end of the sample, and then the clamping mechanism 1 is used to clamp the movable pressing plate 14, so that the positioning protrusion 111 extends into the positioning groove 110 to clamp the left end of the sample, and then the clamping mechanism 2 releases the movable pressing plate 21 0, at this time, the movable pressing plate 210 rises under the action of the spring 27, so that the right end of the sample can be placed in the positioning groove 21. When the sample is placed, the right end face of the sample is flush with the right end face of the positioning groove 21, and the front and rear side walls of the positioning groove 21 quickly and accurately locate the front and rear side walls of the right end of the sample. Then, the clamping mechanism 2 is used to clamp the movable pressing plate 210, so that the positioning protrusion 28 extends into the positioning groove 21 to clamp the right end of the sample. Then, the testing machine body 3 can drive the movable clamp 2 to move to perform performance tests such as peeling and breaking of the product.

[0026] Embodiment 2, based on embodiment 1, there are multiple positioning blocks 19, each positioning block 19 is equipped with a positioning pressing block 15, and the widths of the positioning grooves 110 on the multiple positioning blocks 19 in the front-to-back direction are not equal.

[0027] Each positioning block 19 is equipped with a positioning block 23 , and each positioning block 23 is equipped with a positioning pressing block 29 . The widths of the positioning grooves 21 on the plurality of positioning blocks 23 in the front-to-back direction are not equal.

[0028] The bottom of the positioning block 19 and the top of the positioning pressing block 15 are both fixed with a plug-in column 18, and the top of the fixed support plate 11 and the bottom of the movable pressing plate 14 are both provided with a plug-in hole 1 that is interference-fitted with the plug-in column 18.

[0029] The bottom of the second positioning block 23 and the top of the second positioning pressure block 29 are both fixed with the plug-in column 26, and the top of the movable support plate 22 and the bottom of the second movable pressure plate 210 are both provided with the plug-in hole 2 that is interference-fitted with the plug-in column 26. Before work, according to the width of the sample, select the appropriate positioning block 19 and the positioning pressure block 15 so that the plug-in column 18 is inserted into the corresponding plug-in hole 1, and select the appropriate positioning block 23 and the positioning pressure block 29 so that the plug-in column 26 is inserted into the corresponding plug-in hole 2.

[0030] A rubber pad 4 is fixed to the top of the positioning protrusion 111 and the positioning protrusion 28, a dovetail-shaped anti-slip protrusion 5 is provided on the top of the rubber pad 4, and an anti-slip groove cooperating with the anti-slip protrusion 5 is provided at the bottom of the positioning protrusion 111 and the positioning protrusion 28.

[0031] The clamping mechanism 1 includes a support plate 16 fixed on the top of the guide column 12, an adjusting screw sleeve 112 is fixed in the middle of the support plate 16, an adjusting stud 17 is connected inside the adjusting screw sleeve 112, the bottom of the adjusting stud 17 contacts the top of the movable pressing plate 14, a rotating rod 113 is fixed on the top of the adjusting stud 17, and the bottom of the guide column 12 is fixed on the fixed support plate 11. There are two guide columns 12, which are respectively fixed at the front and rear ends of the fixed support plate 11, and a sliding hole 1 is provided on the movable pressing plate 14 for the guide column 12 to pass through, and the movable pressing plate 14 can slide up and down along the guide column 12.

[0032] The clamping mechanism 2 includes a support plate 211 fixed on the top of the guide post 25, an adjusting screw sleeve 212 is fixed in the middle of the support plate 211, an adjusting stud 213 is connected inside the adjusting screw sleeve 212, the bottom of the adjusting stud 213 contacts the top of the movable pressing plate 210, a rotating ring 214 is fixed on the top of the adjusting stud 213, a fixing plate 215 is fixed at the bottom of the front and rear ends of the support plate 211, and the fixing plate 215 and the bottom of the guide post 25 are both fixed on the movable supporting plate 22. There are two guide posts 25, which are respectively fixed at the front and rear ends of the movable supporting plate 22, and a sliding hole 2 is provided on the movable pressing plate 210 for the guide posts 25 to pass through, and the movable pressing plate 210 can slide up and down along the guide posts 25.

[0033] Embodiment 3, the utility model also provides a peel tester for aluminum foil heat seal strength test, including a tester body 3, and also includes a peel test fixture for aluminum foil heat seal strength test in embodiment 1 or 2. The tester body 3 is a prior art and is not described here. A connecting plate 24 is fixed just below the center line of the movable support plate 22 of the movable fixture 2, and the connecting plate 24 is connected to the nut of the screw nut pair on the tester body 3. The center line of the movable fixture 2 is just above the center axis of the screw.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0035] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A peel test fixture for aluminum foil heat sealing strength test, comprising a fixed fixture (1) and a movable fixture (2), wherein the fixed fixture (1) comprises a fixed support plate (11), a movable pressure plate (14), and a guide column (12), wherein a clamping mechanism (1) is provided above the movable pressure plate (14), and the movable fixture (2) comprises a movable support plate (22), a movable pressure plate (210), and a guide column (25), wherein a clamping mechanism (2) is provided above the movable pressure plate (210), and wherein: A positioning block (19) is installed in the middle of the fixed support plate (11), and a positioning groove (110) is provided on the top of the positioning block (19). The right end of the positioning groove (110) extends to the right side wall of the positioning block (19). A positioning pressure block (15) installed on the movable pressure plate (14) is provided above the positioning block (19). A positioning protrusion (111) matching with the positioning groove (110) is provided at the bottom of the positioning pressure block (15). A spring (13) is sleeved on the guide column (12) below the movable pressure plate (14). A positioning block (23) is installed in the middle of the movable support plate (22), and a positioning groove (210) is provided on the top of the positioning block (23). ), the left end of the second positioning groove (21) extends to the left side wall of the second positioning block (23), a second positioning pressure block (29) mounted on the second movable pressure plate (210) is provided above the second positioning block (23), a second positioning protrusion (28) cooperating with the second positioning groove (21) is provided at the bottom of the second positioning pressure block (29), a second spring (27) is sleeved on the second guide column (25) below the second movable pressure plate (210), the center line of the first positioning groove (110) and the center line of the second positioning groove (21) are the same horizontal line and coincide with the center lines of the fixed fixture (1) and the movable fixture (2), and the width of the first positioning groove (110) and the second positioning groove (21) in the front-to-back direction are equal.

2. The peel test fixture for aluminum foil heat seal strength test according to claim 1, characterized in that: There are a plurality of positioning blocks (19), each of which is equipped with a positioning pressing block (15), and the widths of the positioning grooves (110) on the plurality of positioning blocks (19) in the front-to-back direction are not equal.

3. The peel test fixture for aluminum foil heat seal strength test according to claim 2, characterized in that: Each positioning block 1 (19) is equipped with a positioning block 2 (23), and each positioning block 2 (23) is equipped with a positioning pressing block 2 (29). The widths of the positioning grooves 2 (21) on the plurality of positioning blocks 2 (23) in the front-to-back direction are not equal.

4. The peel test fixture for aluminum foil heat seal strength test according to claim 3, characterized in that: The bottom of the positioning block 1 (19) and the top of the positioning pressure block 1 (15) are both fixed with a plug-in column 1 (18), and the top of the fixed support plate (11) and the bottom of the movable pressure plate 1 (14) are both provided with a plug-in hole 1 which is interference-fitted with the plug-in column 1 (18).

5. The peel test fixture for aluminum foil heat seal strength test according to claim 3, characterized in that: The bottom of the second positioning block (23) and the top of the second positioning pressure block (29) are both fixed with a second plug-in column (26), and the top of the movable support plate (22) and the bottom of the second movable pressure plate (210) are both provided with a second plug-in hole that is interference-fitted with the second plug-in column (26).

6. The peel test fixture for aluminum foil heat seal strength test according to claim 1, characterized in that: A rubber pad (4) is fixed to the top of the first positioning protrusion (111) and the second positioning protrusion (28), a dovetail-shaped anti-slip protrusion (5) is provided on the top of the rubber pad (4), and an anti-slip groove cooperating with the anti-slip protrusion (5) is provided at the bottom of the first positioning protrusion (111) and the second positioning protrusion (28).

7. The peel test fixture for aluminum foil heat seal strength test according to claim 1, characterized in that: The clamping mechanism comprises a support plate (16) fixed on the top of the guide column (12), an adjusting screw sleeve (112) is fixed in the middle of the support plate (16), an adjusting stud (17) is connected inside the adjusting screw sleeve (112), the bottom of the adjusting stud (17) contacts the top of the movable pressure plate (14), a rotating rod (113) is fixed on the top of the adjusting stud (17), and the bottom of the guide column (12) is fixed on the fixed support plate (11).

8. The peel test fixture for aluminum foil heat seal strength test according to claim 1, characterized in that: The clamping mechanism 2 comprises a support plate 2 (211) fixed on the top of the guide column 2 (25), an adjusting screw sleeve 2 (212) is fixed in the middle of the support plate 2 (211), an adjusting stud 2 (213) is connected inside the adjusting screw sleeve 2 (212), the bottom of the adjusting stud 2 (213) contacts the top of the movable pressure plate 2 (210), a rotating ring (214) is fixed on the top of the adjusting stud 2 (213), a fixing plate (215) is fixed on the bottom of the front and rear ends of the support plate 2 (211), and the fixing plate (215) and the bottom of the guide column 2 (25) are both fixed on the movable support plate (22).

9. A peel tester for aluminum foil heat sealing strength test, comprising a tester body (3), characterized in that: It also includes a peeling test fixture for aluminum foil heat sealing strength test as described in any one of claims 1 to 8.

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