CN211206195U

CN211206195U - Tearing strength instrument

Info

Publication number: CN211206195U
Application number: CN201922010378.0U
Authority: CN
Inventors: 曾永辉
Original assignee: Dober Shanghai Packaging Materials Co ltd
Current assignee: Dober Shanghai Packaging Materials Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-08-07
Anticipated expiration: 2029-11-19

Abstract

The utility model relates to a tearing strength instrument, relating to the technical field of film detection devices and aiming at solving the problems that in the testing process of the existing tearing strength instrument, the problem that the tearing strength value of the sample measured is not accurate enough due to the loose sample between the fixed clamp and the movable clamp, which comprises a control box, a pendulum bracket arranged above the control box, an ‌ fan-shaped pendulum body rotationally connected on the pendulum bracket, a ‌ fixed clamp arranged on one side of the pendulum bracket close to the fan-shaped pendulum body, and a movable clamp arranged on the fan-shaped pendulum body, wherein the fixed clamp is arranged on an arc-shaped path which the movable clamp passes along with the fan-shaped pendulum body, and the movable clamp is driven by the tensioning mechanism to slide and be arranged on the fan-shaped pendulum body along the direction close to or far away from the fixed clamp. The utility model discloses a tensioning awaits measuring the sample and reduce the deviation of the result that detects out, guaranteed the accuracy of testing result.

Description

Tearing strength instrument

Technical Field

The utility model belongs to the technical field of film detection device's technique and specifically relates to a tearing strength appearance is related to.

Background

Tearability meters are commonly used to measure the tear strength of films, sheets, flexible polyvinyl chloride, polyvinylidene chloride (PVDC), waterproof rolls, woven materials, polyolefins, polyesters, paper, cardboard, textiles, non-woven fabrics, and the like. The pendulum bob type stamping die mainly comprises a pendulum bob bracket, an ‌ fan-shaped pendulum bob body, a ‌ pendulum shaft, a ‌ fixing clamp, a movable clamp, a ‌ weight-increasing weight, a stamping knife ‌, a pendulum bob release mechanism, a ‌ computer and the like, wherein ‌ is formed. When the pendulum bob is used, the pendulum bob is lifted to a certain height, so that the pendulum bob has certain potential energy; when the pendulum bob freely swings downwards, the sample is torn by using the energy stored in the pendulum bob; the energy consumed in tearing the specimen was calculated by the computer control system to obtain the force required to tear the specimen.

For example, utility model with the bulletin number of CN204731118U discloses a device for testing antibiotic film right angle tear strength, the device includes fan-shaped hammer, scale, fixed clamp, moves clamp, tears sword, support, base, fan-shaped hammer is fixed on the support, the scale is installed in the surface of fan-shaped hammer, it links to each other with fan-shaped hammer to move clamp, fixed clamp installs on the support, is equipped with one and tears the sword below moving clamp and fixed clamp, it fixes on the support to tear sword one end, the support mounting is on a rectangular base.

The device is through pressing from both sides the sample tightly in the fixed clamp and moving between the clamp, opens an incision by tearing the sword, utilizes fan-shaped hammer free fall, moves clamp and fixed clamp and separates rapidly for the sample receives the tear, and reads data through the pointer, the utility model provides a device can simply effectually measure antibacterial film's tear strength.

However, in the actual side testing process, when the sample to be tested is a light soft material, such as a thin film, it is difficult to fix the sample between the fixed clamp and the movable clamp in a tightened state, and when the sample between the fixed clamp and the movable clamp is loose, the cutting position of the tearing knife is inaccurate, the size of the tearing opening is unreasonable, the tearing time and the tearing force are deviated, and the tearing strength value of the measured sample is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tearing intensity appearance, its sample that awaits measuring through the tensioning and reduce the deviation of the result that detects out, guaranteed the accuracy of testing result.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a tearing strength appearance, includes the control box, locates the pendulum support of control box top, rotate connect in ‌ fan-shaped pendulum body on the pendulum support, locate the pendulum support is close to ‌ mounting fixture of fan-shaped pendulum body one side, locate movable fixture on the fan-shaped pendulum body, mounting fixture locates movable fixture follows on the arc route that fan-shaped pendulum body passed through to be located pendulum support and fan-shaped pendulum body and rotate the below of hookup location, be equipped with straining device on the fan-shaped pendulum body, the straining device drive movable fixture along being close to or keeping away from slide in mounting fixture's the direction set up in on the fan-shaped pendulum body.

By adopting the technical scheme, before the test piece testing device is used, the fan-shaped pendulum hammer body is rotated, the movable clamp on the fan-shaped pendulum hammer body is positioned at a position right opposite to the fixed clamp, two ends of a test piece (generally a film or paper) to be tested are respectively clamped on the fixed clamp and the movable clamp, when the test piece is soft and cannot be tightened, the movable clamp can be driven by the tensioning device to move to one side far away from the fixed clamp, so that the test piece is tightened, but the test piece cannot be tightened to deform to influence the measurement result of the test piece, then a notch is cut at the position of the test piece between the fixed clamp and the movable clamp, the limitation on the fan-shaped pendulum hammer body is removed, the fan-shaped pendulum hammer body freely rotates and falls under the action of gravity, at the moment, the fixed clamp and the movable clamp are rapidly separated to tear the test piece, and the control box tests the energy consumed when, thereby obtaining the force required for tearing the test piece and further obtaining the tear strength of the test piece. In the whole operation process, the step of tightening the test piece plays a key step, and the test piece between the fixed clamp and the movable clamp is tightened by utilizing the tensioning mechanism, so that the cut position is more accurate, and the fan-shaped pendulum hammer body can apply force to the test piece when beginning to fall, thereby ensuring the accuracy of the detected result.

The utility model discloses further set up to: the tensioning mechanism comprises a sliding groove which is perpendicular to the rotating plane of the fan-shaped pendulum body and is arranged on the fan-shaped pendulum body, a sliding block which is connected in the sliding groove in a sliding manner, a tensioning screw which is connected in the sliding groove in a rotating manner along the length direction of the sliding groove, the sliding block is connected to the tensioning screw in a threaded manner, and the sliding block is fixedly connected with the movable clamp; one end of the tensioning screw rod extends out of the end part of the sliding groove, and the extending end is connected with a tensioning handle.

Through adopting above-mentioned technical scheme, when personnel rotated the tensioning handle, the tensioning handle drove the tensioning screw rod and rotates to drive threaded connection and slide along the spout in the slider on the tensioning screw rod, thereby drive movable fixture and be close to or keep away from mounting fixture, realize the tensioning or relaxing to the test piece, simple structure, regulation convenience have guaranteed the accuracy of test result.

The utility model discloses further set up to: the tensioning mechanism further comprises an auxiliary positioning mechanism, the auxiliary positioning mechanism comprises a screw hole communicated with the sliding groove and a screw connected to the screw hole, and one end of the screw extending into the screw hole is arranged on the sliding block in a propping mode.

Through adopting above-mentioned technical scheme, auxiliary positioning mechanism uses when tensioning screw rod adjusts movable fixture to suitable position for prevent in the twinkling of an eye that the test piece received to tear, movable fixture produces and slightly rocks and influence the accuracy of test result.

The utility model discloses set up further to the mounting fixture with the activity anchor clamps structure is the same, all include the anchor clamps seat, the threaded connection of one "L" shape in the clamping screw on one of them lateral wall of anchor clamps seat, clamping screw is just right another lateral wall setting of anchor clamps seat, clamping screw is located one end top in the anchor clamps seat is equipped with the clamp plate, and the other end is worn out the anchor clamps seat lateral wall to wear out the end and connect the clamp handle, the clamp plate slides along the direction of perpendicular to anchor clamps seat both sides wall and locates on the diapire of anchor clamps seat, clamping screw's tip with rotate between the clamp plate and be connected.

By adopting the technical scheme, when a person rotates the clamping handle, the clamping handle drives the clamping screw connected with the clamping handle to rotate and move along the axial direction of the clamping screw, so that the clamping piece rotationally connected with the clamping handle is driven to be close to or far away from the side wall of one end, far away from the clamping screw, of the clamp seat, and when the clamping piece is close to or far away from the side wall, the test piece is clamped between the clamping screw and the clamp seat; when keeping away from, the release to the test piece is realized because the clamping piece is connected with rotating between the tip that presss from both sides tight screw rod to the clamping piece slides on the card locates the diapire of anchor clamps seat, consequently, the rotation that presss from both sides tight screw rod can drive the clamping piece and slide and press from both sides tight test piece, but can not drive the clamping piece and rotate along with the rotation that presss from both sides tight screw rod, avoids the clamping piece to rub the test piece. The whole structure is simple in use method and high in operability.

The utility model discloses further set up to: and the side walls of the clamping piece and the clamp seat far away from one side of the clamping screw rod are provided with anti-skidding gaskets.

Through adopting above-mentioned technical scheme, the increase is to the frictional force of test piece both sides, prevents that the test piece from receiving to tear to drag and take place relative slip between the lateral wall of pressing from both sides tight piece and keeping away from tight screw rod one side with the anchor clamps seat, influences the accuracy that detects, especially when the tearing strength of test piece is great.

The utility model discloses further set up to: the pendulum support is connected with a cutter in a rotating mode, the cutter comprises a cutting edge and a cutter handle, and the cutting edge rotates along with the cutter, so that the rotating plane passes through a gap between the movable clamp and the fixed clamp.

Through adopting above-mentioned technical scheme, the test piece is cut off through the cutter of fixed position, has guaranteed the accuracy uniformity of incision position to avoid the test result deviation to appear, the cutter rotates and connects, makes personnel drive the cutting edge through turning handle and rotates, and the rotation through the cutting edge cuts the test piece and forms the incision, and it is more convenient to use.

The utility model discloses further set up to: and the cutter handle of the cutter extends to one side of the clamp seat close to the clamping handle.

Through adopting above-mentioned technical scheme, prevent that personnel from touching the cutting edge and taking place the risk of incising at the in-process mistake that presss from both sides tight test piece, guaranteed the safety in utilization of device.

The utility model discloses further set up to: and a tension spring is connected between the cutter and the pendulum bracket and has a tendency of pulling the end of the cutter where the blade is located to a direction away from the gap between the fixed clamp and the movable clamp.

Through adopting above-mentioned technical scheme, guaranteed the reseing of once only using back cutter, further made things convenient for the use.

To sum up, the utility model discloses a beneficial technological effect does:

1. the tensioning mechanism is utilized to tension the test piece between the fixed clamp and the movable clamp, so that the cut position is more accurate, force can be applied to the test piece when the fan-shaped pendulum hammer body begins to fall, and the accuracy of a detected result is ensured;

2. connect the cutter through rotating on the pendulum support to be connected tension spring between cutter and pendulum support, make personnel drive the cutting edge through rotating the handle and rotate, through the rotation of cutting edge and cut the test piece and form the incision, after once cutting, personnel loosen the hand and can make the cutter resume the normal position, and it is more convenient to use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic sectional view of the plane B-B in fig. 1.

In the figure, 1, a control box; 2. a pendulum support; 3.‌ pendulum fan-shaped hammer body; 4.‌ fixing the clamp; 41. a clamp seat; 42. clamping the screw rod; 43. a clamping handle; 44. a clamping piece; 45. an anti-slip gasket; 5. a movable clamp; 6. a cutter; 61. a blade; 62. a knife handle; 7. a tensioning mechanism; 71. a chute; 72. a slider; 73. an auxiliary positioning mechanism; 731. a screw hole; 732. a screw; 733. tightly pushing the groove; 74. tensioning the screw; 75. a tensioning handle; 8. a tension spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a tearing intensity appearance, including control box 1, locate pendulum support 2 of 1 top of control box immediately, rotate ‌ fan-shaped pendulum hammer block 3 of connecting on pendulum support 2, be fixed in that pendulum support 2 is close to ‌ mounting fixture 4 of fan-shaped pendulum hammer block 3 one side and set up movable fixture 5 on fan-shaped pendulum hammer block 3, mounting fixture 4 is located movable fixture 5 along with the arc route of fan-shaped pendulum hammer block 3 process on, and be located pendulum support 2 and fan-shaped pendulum hammer block 3 and rotate the below of hookup location, before the test, rotate movable fixture 5 with the position to mounting fixture 4 earlier, mounting fixture 4 and movable fixture 5 are used for the both ends of fixed test piece respectively.

For the convenience of use, pendulum support 2 is last to rotate and is connected with cutter 6, and cutter 6 includes cutting edge 61 and handle of a knife 62, and cutting edge 61 passes through the clearance between activity anchor clamps 5 and the mounting fixture 4 along with cutter 6 pivoted rotation plane, and is connected with tension spring 8 between cutter 6 and the pendulum support 2, and tension spring 8 has the trend of holding away from the clearance direction pulling between mounting fixture 4 and the activity anchor clamps 5 cutting edge 61 of cutter 6 place.

Referring to fig. 2 and 3, the fixed fixture 4 and the movable fixture 5 have the same structure, and each include an L-shaped fixture base 41, and a clamping screw 42 threadedly coupled to one side wall of the fixture base 41, the clamping screw 42 facing the other side wall of the fixture base 41, a clamping piece 44 disposed at one end of the clamping screw 42 in the fixture base 41, and a clamping handle 43 connected to the other end of the clamping screw 42, the clamping piece 44 being slidably engaged with the bottom wall of the fixture base 41 in a direction perpendicular to the two side walls of the fixture base 41, and an end of the clamping screw 42 being rotatably connected to the clamping piece 44, in order to prevent the test piece from slipping due to force, the anti-slip gaskets 45 are disposed on the side walls of the clamping piece 44 and the fixture base 41 away from the clamping screw 42, and the anti-slip gasket shank 45 in this embodiment is a rubber gasket, and in order to ensure safety, the 62 of the cutting knife 6 extends to the side of the fixture base 41 close to the clamping handle 43.

Referring to fig. 3, because the test piece that awaits measuring generally is frivolous material, when the test piece material is softer and can't be directly tightened when pressing from both sides tightly, if direct incision and test on the test piece that does not tighten, then probably lead to the test data inaccuracy of test piece, for solving this problem, the utility model discloses be provided with straining device 7 on the fan-shaped pendulum hammer body 3 in this embodiment, straining device 7 drive movable fixture 5 along being close to or keeping away from the direction of mounting fixture 4 and slide and set up on fan-shaped pendulum hammer body 3. The specific structure of the tensioning mechanism 7 is as follows: the tensioning mechanism 7 comprises a sliding chute 71 which is perpendicular to the rotating plane of the fan-shaped pendulum hammer body 3 and arranged on the fan-shaped pendulum hammer body 3, a sliding block 72 which is connected in the sliding chute 71 in a sliding manner, and a tensioning screw 74 which is connected in the sliding chute 71 in a rotating manner along the length direction of the sliding chute 71, wherein the sliding block 72 is connected to the tensioning screw 74 in a threaded manner, and the sliding block 72 is fixedly connected with the movable clamp 5; the tension screw 74 extends at one end out of the end of the chute 71 and is connected at the extended end to a tension handle 75. In addition, in order to prevent the movable clamp 5 from shaking during the test process to affect the test result, the tensioning mechanism 7 further includes an auxiliary positioning mechanism 73, the auxiliary positioning mechanism 73 includes a screw hole 731 communicating with the sliding groove 71 and a screw 732 connected in the screw hole 731, a tightening groove 733 is formed on the surface of the sliding block 72 close to the screw hole 731, and one end of the screw 732 extending into the screw hole 731 is pressed against the tightening groove 733 formed in the sliding block 72.

Before using, rotate fan-shaped pendulum hammer block 3 for movable fixture 5 on the fan-shaped pendulum hammer block 3 is in the position just right with mounting fixture 4, then presss from both sides tightly respectively on mounting fixture 4 and movable fixture 5 with waiting to test piece (generally being film or paper) both ends, and the process of pressing from both sides tightly is: the clamping handle 43 on the fixed clamp 4 and the movable clamp 5 is respectively rotated by a person, the clamping handle 43 drives the clamping screw 42 connected with the clamping handle to rotate and move along the axial direction of the clamping screw, so that the clamping sheet 44 connected with the clamping handle in a rotating mode is driven to approach to the side wall close to one end of the clamp seat 41 far away from the clamping screw 42, and the test piece is clamped between the clamping handle and the clamping screw.

After the test piece presss from both sides tightly, when the test piece material is softer and can't tighten, accessible straining device 7 drive movable fixture 5 removes to keeping away from 4 one sides of stationary fixture to tighten the test piece, the process of tightening is: when a person rotates the tensioning handle 75, the tensioning handle 75 drives the tensioning screw 74 to rotate, so that the sliding block 72 which is in threaded connection with the tensioning screw 74 is driven to slide along the sliding groove 71, the movable clamp 5 is driven to be far away from the fixed clamp 4, tensioning of a test piece is achieved, but attention is paid that the test piece cannot be stretched to deform to influence the measurement result of the test piece, when the test piece is stretched too tightly carelessly, the tensioning handle 75 can be rapidly reversed, the movable clamp 5 moves reversely to relax the test piece to reach the appropriate tightness, and the accuracy of the test result is guaranteed.

After the test piece is tightened, the person presses the tool holder 62 downwards, so that the blade 61 rotates to pass through the test piece between the fixed clamp 4 and the movable clamp 5 against the pulling force of the tension spring 8 and cuts a notch on the test piece, and when the person looses his hand, the cutter 6 rotates back to the original position under the pulling force of the tension spring 8.

Finally, the personnel remove the restriction to the fan-shaped pendulum hammer body 3, so that the fan-shaped pendulum hammer body 3 freely rotates and falls under the action of gravity, at the moment, the fixed clamp 4 and the movable clamp 5 are quickly separated, so that the test sample is torn, the control box 1 tests the energy consumed when the test sample is torn in the process, the force required by tearing the test sample is obtained, and the tear resistance strength of the test sample is obtained.

After the test is completed, the clamping handle 43 is rotated reversely, so that the fixed clamp 4 and the movable clamp 5 respectively release the torn test piece, and the tensioning handle 75 is rotated reversely, so that the movable clamp 5 moves to a position close to the fixed clamp 4.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a tearing intensity appearance, includes control box (1), locates pendulum support (2) of control box (1) top, rotate connect in ‌ fan-shaped pendulum body (3) on pendulum support (2), locate pendulum support (2) are close to ‌ mounting fixture (4) of fan-shaped pendulum body (3) one side, locate movable fixture (5) on fan-shaped pendulum body (3), mounting fixture (4) are located movable fixture (5) are followed on the arc route that fan-shaped pendulum body (3) passed through to be located pendulum support (2) and fan-shaped pendulum body (3) and rotate the below of hookup location, its characterized in that: be equipped with straining device (7) on fan-shaped pendulum hammer block (3), straining device (7) drive movable fixture (5) are along being close to or keeping away from sliding in the direction of mounting fixture (4) set up in on fan-shaped pendulum hammer block (3).

2. A tear gauge as claimed in claim 1, wherein: the tensioning mechanism (7) comprises a sliding groove (71) which is perpendicular to the rotating plane of the fan-shaped pendulum body (3) and arranged on the fan-shaped pendulum body (3), a sliding block (72) which is connected in the sliding groove (71) in a sliding manner, and a tensioning screw (74) which is connected in the sliding groove (71) in a rotating manner along the length direction of the sliding groove (71), wherein the sliding block (72) is connected to the tensioning screw (74) in a threaded manner, and the sliding block (72) is fixedly connected with the movable clamp (5); one end of the tensioning screw rod (74) extends out of the end part of the sliding chute (71), and the extending end is connected with a tensioning handle (75).

3. A tear gauge as claimed in claim 2, wherein: the tensioning mechanism (7) further comprises an auxiliary positioning mechanism (73), the auxiliary positioning mechanism (73) comprises a screw hole (731) communicated with the sliding groove (71) and a screw (732) connected into the screw hole (731), and one end, extending into the screw hole (731), of the screw (732) is arranged on the sliding block (72) in a propping mode.

4. The tearability meter according to claim 1, wherein the fixed fixture (4) and the movable fixture (5) have the same structure, and each fixture includes an L-shaped fixture base (41) and a clamping screw (42) threadedly connected to one side wall of the fixture base (41), the clamping screw (42) is disposed opposite to the other side wall of the fixture base (41), one end of the clamping screw (42) located in the fixture base (41) is provided with a clamping piece (44), the other end of the clamping screw penetrates through the side wall of the fixture base (41), and is connected to a clamping handle (43) at the penetrating end, the clamping piece (44) is slidably clamped on the bottom wall of the fixture base (41) in a direction perpendicular to the two side walls of the fixture base (41), and an end of the clamping screw (42) is rotatably connected to the clamping piece (44).

5. A tear gauge as claimed in claim 4, wherein: and the clamping piece (44) and the side wall of the clamp seat (41) far away from one side of the clamping screw rod (42) are respectively provided with an anti-skidding gasket (45).

6. A tear gauge as claimed in claim 4, wherein: pendulum support (2) are gone up to rotate and are connected with cutter (6), cutter (6) include cutting edge (61) and handle of a knife (62), cutting edge (61) follow cutter (6) pivoted rotation plane passes through activity anchor clamps (5) with clearance between mounting fixture (4).

7. A tear gauge as claimed in claim 6, wherein: the cutter handle (62) of the cutter (6) extends to one side, close to the clamping handle (43), of the clamp seat (41).

8. A tear gauge as claimed in claim 7, wherein: a tension spring (8) is connected between the cutter (6) and the pendulum bracket (2), and the tension spring (8) has a tendency that the end where the cutting edge (61) of the cutter (6) is located is pulled towards the direction far away from the gap between the fixed clamp (4) and the movable clamp (5).