A device and method for testing the softness of a hog casing

Abstract

The present application relates to the technical field of testing equipment, in particular to a kind of pig casing softness testing device and testing method, including test table, power part one, pressure bar, axial clamp, the test table is equipped with power part one, the pressure bar is connected with power part one, the pressure bar is equipped with pressure plate.The present application is clamped to pig casing by axial clamp and radial clamp, and cutting knife is set on axial clamp to cut pig casing, and the pressure bar is controlled to be rotated at right angles by rotating assembly, so that pig casing can be tested in axial toughness strength and radial toughness when being tested, and pig casing axial toughness strength and radial toughness test can be completed by only once clamping, so as to reduce the clamping frequency of pig casing, effectively improve test efficiency, and reduce the measurement error caused by improper operation in clamping, and in the testing process, axial toughness test and radial toughness test do not interfere with each other, so as to improve the accuracy of test.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing equipment, in particular to a testing device and testing method for the softness of pig casing. BACKGROUND

[0002] As a main category of natural casing, pig casing has a wide range of applications in food processing, especially in the production of sausage products. During the production of sausage products, the softness of pig casing directly affects the efficiency of filling processing, the forming quality of products, and the taste and quality of the final products. Softness is a comprehensive index that covers many aspects of the mechanical properties of the material, including toughness, elasticity, ductility, etc., among which toughness strength is one of the core parameters for evaluating softness.

[0003] The detection of pig casing toughness is usually carried out using air pressure. However, when air pressure is used for detection, the casing is in a free state in the axial direction, which makes the air pressure detection more of a detection of the radial toughness of the casing, resulting in low detection accuracy of the toughness strength of pig casing. To avoid this problem, an invention patent with application number CN202310669864.1 provides a cellulose casing strength detection device. This detection device uses a dynamic damping type bidirectional stretching mechanism to test the toughness strength of the casing in the radial direction through the expansion of its own diameter, and also changes the axial stress of the casing by increasing the sliding resistance of the casing and cooperating with the external winding device to test the toughness strength of the casing in the axial direction. Although this device is designed for cellulose casing, it can in principle also be used for the strength detection of pig casing. However, when testing the axial toughness, the device relies on sliding friction to apply and sense the tension force. The friction force generated between the mechanism and the casing during this process introduces measurement errors that cannot be accurately quantified or eliminated, resulting in a decrease in the testing accuracy of the axial toughness strength, which in turn makes it impossible to accurately deduce and evaluate the overall softness of the casing. In addition, the surface of pig casing is naturally wet and slippery, irregular, and other characteristics, which further exacerbate the uncertainty and interference of friction, affecting the reliability of the softness evaluation with toughness as one of the core parameters.

[0004] Therefore, in order to improve the testing accuracy of the softness of pig casing, a testing device and testing method for the softness of pig casing are proposed. SUMMARY

[0005] The present application aims to provide a testing device and testing method for the softness of pig casing. In order to improve the testing accuracy of the softness of pig casing, a step-by-step testing method is used, and the axial toughness test and the radial toughness test do not interfere with each other during the testing process, thereby avoiding the introduction of measurement errors that cannot be accurately quantified or eliminated, and improving the testing accuracy of the softness of pig casing.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A kind of pig casing softness testing device, including test table, power element one, pressure bar, axial clamp, radial clamp, the test table is equipped with power element one, the pressure bar is connected with power element one, the pressure bar is equipped with pressure plate, pressure sensor is equipped at the connecting part of pressure plate and pressure bar, the test table is symmetrically equipped with two axial clamps and two radial clamps, the symmetry plane of two axial clamps is perpendicular to the symmetry plane of two radial clamps, one of the axial clamps is equipped with cutter, the cutter is cut pig casing by axial clamp power, two radial clamps are used to hold the pig casing of cutting part, the test table is equipped with rotating assembly, the rotating assembly is used to control the rotation of pressure bar, and the rotation angle is right angle.

[0008] Pig casing is clamped by axial clamp, power element one pushes pressure bar down at this time, and is extruded on pig casing by pressure plate, pig casing can be stretched in axial direction at this time, and the value of pressure sensor can test the tenacity of pig casing in axial direction, after pig casing is clamped by axial clamp, pig casing can be cut, and the cut pig casing is clamped by radial clamp, when axial tenacity test of pig casing is completed, the clamping of axial clamp is released, the pressure bar is rotated by right angle angle by rotating assembly, pig casing can be stretched in radial direction at this time that power element pushes pressure bar down, and the value of pressure sensor can test the tenacity of pig casing in axial direction, the testing device is simple in structure, and the testing method is step-by-step testing, so that the force generated by axial tenacity test and radial tenacity test does not interfere with each other in the testing process, to improve the accuracy of test, and in the process, only pig casing is clamped once, axial tenacity test and radial tenacity test can be completed, to reduce the clamping frequency of pig casing, to effectively improve the test efficiency, and reduce the measurement error caused by improper operation in clamping.

[0009] Preferably, the axial clamp includes clamp one and clamp two, the clamp one includes two upper clamping plates and two lower clamping plates, a sliding rod is connected between the two upper clamping plates and the two lower clamping plates, two inclined sliding grooves are symmetrically provided on the test table, the two sliding rods are slidingly installed in the sliding grooves, two sliding blocks are slidingly installed in the test table, the two sliding rods are slidingly connected with the sliding blocks, a power element two is provided on the test table, the power element two is used to drive the sliding blocks to reciprocate, a cutter is provided on each of the two upper clamping plates, the clamp two and the radial clamp are both electromagnetic clamps, and the two upper clamping plates and the two lower clamping plates are symmetrically arranged on both sides of the radial clamp.

[0010] The horizontal movement of the power element two controls the inclined movement of the upper clamp plate and the lower clamp plate, so that the upper clamp plate and the lower clamp plate complete clamping of the pig casing, and the pig casing can be cut, and the movement of the upper clamp plate and the lower clamp plate controlled by the power element can avoid interference between the pressing plate and the clamp one, and when the pig casing is fixed, the pig casing can be pre-clamped by the clamp two and the radial clamp, so that the pig casing can be kept in a stretched state when the clamp one cuts the pig casing, thereby avoiding wrinkles of the pig casing when the pig casing is cut, and affecting the test precision of the testing device.

[0011] Preferably, the rotating assembly comprises a sliding seat and a rotating seat, the sliding seat is slidingly installed on the test table, the rotating seat is rotatably installed on the sliding seat, the rotating seat is provided with a gear, the power element one is arranged on the rotating seat, the test table is provided with a rack engaged with the gear, and the test table is provided with a power element three, and the power element three is used to drive the sliding seat to reciprocatingly move.

[0012] The movement of the sliding seat controlled by the power element three makes the pressing rod move between the two radial clamps, and the driving of the gear and the rack can drive the rotating seat to rotate, the sliding stroke of the sliding seat is controlled to make the rotating seat rotate by 90°, so that the pressing plate is perpendicular to the radial direction of the pig casing, and the pressing plate is located at the middle part of the pig casing to be detected, thereby avoiding uneven stress of the pressing plate to cause torque of the pressing plate, and thereby causing measurement error of the pressure sensor, and after the sliding seat is reset, the pressing plate can still be located at the middle part of the pig casing to be detected, and the test precision of the testing device is ensured.

[0013] Preferably, the upper clamp plate is provided with a pre-pressing spring, the pre-pressing spring is connected with an upper pressing plate, the sliding groove is divided into an inclined part and a horizontal part, the inclined part is arranged obliquely, and the horizontal part is arranged horizontally.

[0014] By arranging the upper pressing plate on the upper clamp plate, and connecting the upper pressing plate with the upper clamp plate through the pre-pressing spring, when the upper clamp plate and the lower clamp plate move along the inclined part, the upper pressing plate and the lower clamp plate can clamp the pig casing, so as to pre-fix the pig casing, thereby avoiding that when the pig casing is cut, the pig casing has been cut off, but the pig casing is still loose because it has not been clamped by the clamp one, thereby causing the pig casing to be easily wrinkled when clamped by the clamp one, and affecting the test accuracy of the testing device, and the continuous cutting mode of the clamp one will cause a shearing effect on the pig casing, so that the edges of the pig casing are easily torn, and the pig casing is easily torn at the torn part when the radial toughness of the pig casing is tested, thereby affecting the test precision of the testing device, and when the sliding rod moves to the bottom of the inclined part, the cutter is pressed on the pig casing, and then the sliding block is moved by the power element two, so that the sliding rod moves horizontally along the horizontal part, at this time, the height of the cutter does not change, and the opening and closing of the clamp one can drive the cutter to move horizontally for one round, so as to cut the pig casing, thereby avoiding the shearing to form a torn part.

[0015] Preferably, the lower clamp plate is slidably mounted with a lower pressing plate, the lower pressing plate is provided with a reset plate, the reset plate is connected with a reset spring, one end of the reset spring abuts against the lower clamp plate, the test table is provided with a limiting block, the limiting block is provided with two limiting protrusions, and the two limiting protrusions abut against the upper pressing plate and the lower pressing plate.

[0016] By arranging the limiting protrusions, when the clamp one clamps the pig casing, the movement of the upper pressing plate and the lower pressing plate in the horizontal direction is limited, so when the upper pressing plate and the lower pressing plate contact with the limiting protrusions, the upper clamp plate and the lower clamp plate move, and the upper pressing plate and the lower pressing plate can only move in the vertical direction, thereby avoiding the horizontal friction between the upper pressing plate and the lower pressing plate and the pig casing, and the relative displacement between the pig casing clamped by the clamp one and the pig casing clamped by the clamp two, and the problem that the pig casing is wrinkled and the test precision of the test device is affected.

[0017] Preferably, the cutter is attached to the radial clamp, the lower clamp plate is attached to the test table, and a straight chamfer is arranged on one side of the attachment between the lower clamp plate and the test table, and the width of the straight chamfer is 0.2mm-0.4mm less than the width of the cutter.

[0018] By attaching the cutter to the radial clamp, it can be avoided that part of the pig intestine is not clamped at the edge of the radial clamp, so that a free edge appears on both sides of the clamp. When the free edge is stretched, bending and out-of-plane warping may occur, so that the part of the pig casing produces not only tensile deformation when stretched, but also causes the pressure sensor value to be not only the tensile strength of the pig casing. Therefore, the attachment of the cutter to the radial clamp can avoid the appearance of the free edge and ensure the accuracy of the measurement of the tensile strength of the pig casing. The arrangement of the straight chamfer can form a cutter groove with the test table, so that the cutter immediately contacts the straight chamfer after cutting into the pig casing, disperses the lateral force, and reduces the risk of chipping the cutter tip. In this way, the test precision of the radial tensile strength is affected by the opening of the pig casing caused by cutting. The narrow gap of the cutter groove can limit the flow of pig casing material, reduce adhesion, and avoid the problem that the adhesion and pulling of the cutter cause the pig casing to produce openings. When the cutter extrudes the pig casing into the cutter groove, the pig casing is stretched, and the thickness of the pig casing is reduced, so that the pig casing is more easily cut open.

[0019] Preferably, the limiting block is provided with a limiting groove, the limiting groove wraps the upper clamp plate and the lower clamp plate, and the limiting groove limits the upper clamp plate and the lower clamp plate in the vertical direction and in the horizontal direction perpendicular to the moving direction of the sliding block.

[0020] By arranging the limiting groove, the upper clamp plate and the lower clamp plate are limited in the vertical direction, so as to avoid a large torque generated when the upper clamp plate and the lower clamp plate move away from one end of the sliding rod, which causes the sliding rod to deform and affects the clamping effect of the clamp one. The horizontal limiting in the direction perpendicular to the moving direction of the sliding block can make the cutter and the lower clamp plate always attach to the radial clamp and the test table, and avoid the cutting of the free edge.

[0021] A test method applied to the test device for testing the softness of pig casing, comprising the following steps:

[0022] S1: First, cut the pig casing into a rectangular sample;

[0023] S2: Then place the pig casing sample on the test table, first start clamp two to hold one end of the pig casing sample, and then start the radial clamp to hold the pig casing sample;

[0024] S3: After the radial clamp holds the pig casing sample, start clamp one to hold the pig casing sample and cut the pig casing sample;

[0025] S4: After clamp one completes the cutting of the pig casing sample, power element one is started to push the pressing rod downward, and the pressing plate is pressed on the middle part of the pig casing sample, the pig casing sample is stretched by the downward pressing of the pressing rod, until the pig casing sample tears, power element one is stopped, and the numerical relationship between the displacement of the pressing rod and the pressure sensor is recorded, until the pig casing tears, power element one is closed;

[0026] S5: After the pig casing sample tears, power element one controls the pressing rod to move upward, the rotating assembly is started, and after the pressing rod rotates 90°, the action is stopped, and then clamp one is started, so that clamp one no longer holds the pig casing sample;

[0027] S6: When clamp one no longer holds the sample, power element one is started to push the pressing rod downward, and the pressing plate is pressed on the middle part of the pig casing sample, the pig casing sample is stretched by the downward pressing of the pressing rod, until the pig casing sample tears, power element one is stopped, and the numerical relationship between the displacement of the pressing rod and the pressure sensor is recorded again, after the pig casing tears again, power element one is closed;

[0028] S7: After the pig casing sample tears, power element one controls the pressing rod to move upward, the rotating assembly is started, and after the pressing rod rotates 90°, the action is stopped, and the radial clamp and clamp two are closed;

[0029] S8: Finally, clean the residual pig casing sample on the test table.

[0030] Compared with the prior art, the beneficial effects of the present application are:

[0031] 1. This invention uses axial and radial clamps to hold pig casings, and a cutter is set on the axial clamp to cut the pig casings. The pressure rod is controlled to rotate at a right angle by a rotating component. This allows the pig casings to undergo axial and radial toughness tests with only one clamping, thereby reducing the number of clamping operations, effectively improving testing efficiency, and reducing measurement errors caused by improper clamping. Furthermore, the axial toughness test and the radial toughness test do not interfere with each other during the testing process, thus improving the accuracy of the test.

[0032] 2. By controlling the horizontal movement and rotation of the pressure bar through the rotating component, the pressure plate is positioned in the center of the pig casing during the axial and radial toughness tests of the testing device. This avoids uneven force on the pressure plate, which could lead to torque and thus prevent measurement errors from the pressure sensor.

[0033] 3. By setting an upper pressure plate on the upper clamping plate, and the upper pressure plate being connected to the upper clamping plate via a pre-compression spring, the upper and lower clamping plates can clamp the pig casing when the upper and lower clamping plates move along the inclined section, thereby pre-fixing the pig casing and preventing it from being cut off during cutting. This also prevents wrinkles from forming when the pig casing is clamped, thus ensuring the accuracy of the testing device. Furthermore, the upper clamping plate moves horizontally and automatically along the horizontal section, which can improve the cutting quality of the pig casing and prevent the appearance of gaps that could affect the accuracy of the testing device. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0036] Figure 3 This is a cross-sectional view of the clamp of the present invention holding pig intestine casing;

[0037] Figure 4 This is a cross-sectional view of the clamp of the present invention when it slides along the inclined portion;

[0038] Figure 5 This is a cross-sectional view of the clamp of the present invention when it slides above the inclined portion;

[0039] Figure 6 for Figure 5 Enlarged view of a portion of point A in the middle;

[0040] Figure 7 for Figure 6 Sectional view at point BB;

[0041] Figure 8 This is a flowchart of the testing method of the present invention.

[0042] In the figure: 1, test bench; 2, power part one; 3, pressing rod; 4, axial clamp; 41, clamp one; 411, upper clamp plate; 412, lower clamp plate; 42, clamp two; 43, sliding rod; 44, sliding groove; 441, inclined part; 442, horizontal part; 45, sliding block; 46, power part two; 5, radial clamp; 6, pressing plate; 7, cutter; 8, rotating assembly; 81, sliding seat; 82, rotating seat; 83, gear; 84, rack; 85, power part three; 9, pre-pressing spring; 10, upper pressing plate; 11, lower pressing plate; 12, reset plate; 13, reset spring; 14, limiting block; 141, limiting protrusion; 142, limiting groove; 15, straight chamfer; 16, pig casing sample. DETAILED DESCRIPTION

[0043] Please refer to Figures 1 to 8 The present application provides a kind of pig casing softness test device and test method, technical scheme is as follows:

[0044] A kind of pig casing softness test device, please refer to Figures 1 to 7, including test platform 1, test platform 1 is equipped with axial clamp 4, radial clamp 5, power element one 2, power element one 2 is connected with press bar 3, press bar 3 is connected with pressing plate 6, and pressure sensor is arranged at the connecting position of pressing plate 6 and press bar 3, test platform 1 is equipped with rotating assembly 8, rotating assembly 8 is connected with power element one 2, clamp one 41 includes two upper clamping plates 411 and two lower clamping plates 412, two the upper clamping plate 411 and two lower clamping plates 412 are symmetrically arranged on the two sides of radial clamp 5, sliding rod 43 is connected between two the upper clamping plate 411 and two lower clamping plates 412, two the inclined sliding groove 44 is symmetrically arranged on test platform 1, two the sliding rod 43 is slidably installed in sliding groove 44, sliding block 45 is slidably installed in test platform 1, two the sliding rod 43 is slidably connected with sliding block 45, power element two 46 is arranged on test platform 1, power element two 46 is connected with sliding block 45, two the upper clamping plate 411 is equipped with cutter 7, clamp two 42 and radial clamp 5 are both electromagnetic clamps.In the process of the pig casing sample 16 toughness strength test, the pig casing sample 16 is cut into a rectangular sample, and then the pig casing sample 16 is placed flat on the test table 1. At this time, the clamp two 42 is started to clamp one end of the pig casing sample 16, and then the pig casing sample 16 is straightened to check whether there are wrinkles. When there are no wrinkles, the radial clamp 5 is started to clamp the pig casing sample 16. At this time, the pig casing sample 16 is fixed. Then the power part two 46 is started to push the sliding block 45 towards the pig casing sample 16. The sliding block 45 limits the rotation of the slide rod 43, so that the upper clamp plate 411 and the lower clamp plate 412 are pushed towards the pig casing sample 16 by the slide rod 43 and move towards each other to clamp the pig casing sample 16. When the cutter 7 contacts the pig casing sample 16, the cutter 7 cuts the pig casing sample 16, so that the radial clamp 5 only clamps the cut pig casing sample 16. When the slide rod 43 moves to the limit position of the sliding groove 44, the clamp one 41 completes the clamping of the pig casing sample 16. At this time, the power part one 2 is started to push the pressing rod 3 downward, and the pressing plate 6 is pressed on the middle part of the pig casing sample 16. The pig casing sample 16 is stretched by the downward pressing of the pressing rod 3 until the pig casing sample 16 is torn. Stop the power part one 2. At this time, the maximum extrusion force required for the pig casing sample 16 to tear can be tested by the pressure sensor display value, and the displacement of the power rod can be monitored, that is, the axial toughness strength of the pig casing sample 16 can be judged. After completing the axial toughness test, the power part two 46 controls the sliding block 45 to move reversely, so that the clamp one 41 no longer clamps the pig casing sample 16, and the upper clamp plate 411 and the lower clamp plate 412 move away from the symmetry plane of the two radial clamps 5. Then the rotating assembly 8 is started to control the power part one 2 to rotate 90°, so that the pressing plate 6 rotates 90°. At this time, the power part one 2 is started to push the pressing plate 6 to stretch the pig casing sample 16 in the radial direction, so as to test the radial toughness strength of the pig casing sample 16. The test device has a simple structure, and the test method adopts step-by-step test. Therefore, the forces generated by the axial toughness test and the radial toughness test do not interfere with each other during the test, thereby improving the test accuracy. In the process, only one clamping of the pig casing sample 16 is required to complete the axial toughness test and the radial toughness test, thereby reducing the clamping frequency of the pig casing sample 16, effectively improving the test efficiency, and reducing the measurement error caused by improper operation during clamping. The rotating assembly 8 includes a sliding seat 81 and a rotating seat 82. The sliding seat 81 is slidably installed on the test table 1. The rotating seat 82 is rotatably installed on the sliding seat 81. The rotating seat 82 is provided with a gear 83. The power part one 2 is arranged on the rotating seat 82. The test table 1 is provided with a rack 84 engaged with the gear 83. The test table 1 is provided with a power part three 85 for driving the sliding seat 81 to move reciprocally.The power member three 85 controls the sliding seat 81 to move, so that the pressing rod 3 moves to between the two radial clamps 5, and through the driving of the gear 83 and the rack 84, the rotating seat 82 can be driven to rotate, through controlling the sliding stroke of the sliding seat 81, the rotating seat 82 rotates 90°, and then the pressing plate 6 is perpendicular to the radial direction of the pig casing sample 16, and the pressing plate 6 is in the middle part of the pig casing sample 16 to be detected, so that the problem that the pressing plate 6 generates the torque due to the uneven force and the problem that the measurement error of the pressure sensor occurs are avoided, and after the power member three 85 controls the sliding seat 81 to reset, the pressing plate 6 can still be ensured to be in the middle part of the pig casing sample 16 to be detected, and the test precision of the testing device is ensured.

[0045] Please refer to Figures 1 to 7The upper clamp plate 411 is provided with a pre-pressing spring 9, the pre-pressing spring 9 is connected with an upper pressing plate 10, the sliding groove 44 is divided into an inclined part 441 and a horizontal part 442, the inclined part 441 is arranged in an inclined manner, and the horizontal part 442 is arranged in a horizontal manner; when the sliding block 45 moves in the hog casing sample 16 direction first, the slide rod 43 slides along the inclined part 441 first, so that the upper clamp plate 411 and the lower clamp plate 412 approach each other, and after moving a set distance, the upper pressing plate 10 contacts the lower clamp plate 412 first, and at this time the cutter 7 does not contact the hog casing sample 16, at this time the hog casing sample 16 can be pre-clamped by compressing the pre-pressing spring 9, and with the continuous approach of the upper clamp plate 411 and the lower clamp plate 412, the cutter 7 is pressed and clamped with the lower clamp plate 412, and then when the power element two 46 pushes the sliding block 45 to move, the slide rod 43 moves horizontally along the horizontal part 442, at this time the height of the cutter 7 does not change, and the opening and closing of the clamp one 41 can drive the cutter 7 to move horizontally for one round trip, so as to cut open the hog casing sample 16, and the hog casing sample 16 is cut by horizontal movement, and the separation of the material is mainly completed by stretching and tearing, so that the hog casing sample 16 is cut more smoothly, thereby avoiding the occurrence of a gap when the hog casing sample 16 is cut, which affects the accuracy of the testing device; the cutter 7 is attached to the radial clamp 5, the lower clamp plate 412 is attached to the test table 1, and a straight chamfer 15 is arranged on one side of the attachment of the lower clamp plate 412 and the test table 1, and the width of the straight chamfer 15 is 0.4mm less than the width of the cutter 7; by attaching the cutter 7 to the radial clamp 5, it can be avoided that part of the hog casing on the edge of the radial clamp 5 is not clamped, and the occurrence of the free edge is avoided to introduce other test errors, so as to ensure the accuracy of the hog casing sample 16 toughness strength measurement, the straight chamfer 15 is arranged to form a knife groove with the test table 1, so that the cutter 7 immediately contacts the straight chamfer 15 after cutting into the hog casing sample 16, the lateral force is dispersed, the risk of tool tip chipping is reduced, so as to avoid the occurrence of a gap in the cutting of the hog casing sample 16, which affects the test precision of the radial toughness strength, and the narrow gap of the knife groove can limit the material flow of the hog casing sample 16, reduce adhesion, and avoid the problem that the cutter 7 is adhered and pulled to cause the hog casing sample 16 to have a gap, and when the cutter 7 extrudes the hog casing sample 16 into the knife groove, the hog casing sample 16 can be stretched, and the hog casing sample 16 can be stretched to reduce the thickness of the hog casing sample 16, so that the hog casing sample 16 is more easily cut open.

[0046] Please refer to Figures 1 to 7The lower clamp plate 412 is slidably installed with a lower pressing plate 11, the lower pressing plate 11 is provided with a reset plate 12, the reset plate 12 is connected with a reset spring 13, one end of the reset spring 13 abuts against the lower clamp plate 412, the test table 1 is provided with a limiting block 14, the limiting block 14 is provided with two limiting protrusions 141, and the two limiting protrusions 141 abut against the upper pressing plate 10 and the lower pressing plate 11; when the upper clamp plate 411 and the lower clamp plate 412 move horizontally and approach each other, the upper pressing plate 10 and the lower pressing plate 11 abut against the limiting protrusions 141, at this time, the movement of the upper pressing plate 10 and the lower pressing plate 11 is limited, at this time, the inclined movement of the upper clamp plate 411 and the lower clamp plate 412 only pushes the upper pressing plate 10 and the lower pressing plate 11 to move in the vertical direction, so that the upper pressing plate 10 and the lower pressing plate 11 move perpendicular to the surface of the pig casing sample 16 and clamp the pig casing sample, avoiding the horizontal friction force generated by the upper pressing plate 10 and the lower pressing plate 11 on the pig casing sample 16, which causes the relative displacement between the pig casing sample 16 clamped by the clamp one 41 and the pig casing sample 16 clamped by the clamp two 42, and causes the pig casing sample 16 to wrinkle and affect the test precision of the test device; the limiting block 14 is provided with a limiting groove 142, and the limiting groove 142 wraps the upper clamp plate 411 and the lower clamp plate 412; by wrapping the upper clamp plate 411 and the lower clamp plate 412 with the limiting groove 142, the limiting groove 142 limits the upper clamp plate 411 and the lower clamp plate 412 in the vertical direction and in the horizontal direction perpendicular to the moving direction of the sliding block 45, which can avoid the upper clamp plate 411 and the lower clamp plate 412 generating a large torque away from one end of the slide rod 43, thereby avoiding the deformation of the slide rod 43 and affecting the clamping effect of the clamp one 41, and the horizontal limiting perpendicular to the moving direction of the sliding block 45 can make the cutter 7 and the lower clamp plate 412 always adhere to the radial clamp 5 and the test table 1, avoiding the free edge of the cut pig casing sample 16 on the clamp, thereby ensuring the accuracy of the test device.

[0047] A test method applied to the test device for testing the softness of pig casing, please refer to Figures 1 to 8 , comprising the following steps:

[0048] S1: First, cut the pig casing into a rectangular sample;

[0049] S2: Then the pig casing sample 16 is pulled flat and placed on the test table 1, at this time the clamp two 42 is started first, the clamp two 42 clamps one end of the pig casing sample 16, and then the pig casing sample 16 is straightened to see if there are wrinkles, and when there are no wrinkles, the radial clamp 5 is started to clamp the pig casing sample 16; the power part two 46 is started, the sliding block 45 is pushed towards the pig casing sample 16, when the cutter 7 contacts the pig casing sample 16, the cutter 7 cuts the pig casing sample 16, so that the radial clamp 5 only clamps the cut pig casing sample 16, when the sliding rod 43 moves to the limit position of the sliding groove 44, the clamp one 41 completes the clamping of the pig casing sample 16;

[0050] S3: After the radial clamp 5 clamps the pig casing sample 16, the power part two 46 is started, the sliding block 45 is pushed towards the pig casing sample 16, so that the upper pressing plate 10 and the lower pressing plate 11 clamp the pig casing sample 16, and cut the pig casing sample 16 by moving the upper clamp plate 411 and the lower clamp plate 412;

[0051] S4: After the clamp one 41 completes the cutting of the pig casing sample 16, the power part one 2 is started, the pressing rod 3 is pushed downwards, and the pressing plate 6 is extruded on the middle part of the pig casing sample 16, the pig casing sample 16 is stretched by the downward pressing of the pressing rod 3 until the pig casing sample 16 is torn, the power part one 2 is stopped, and the numerical relationship between the displacement of the pressing rod 3 and the pressure sensor is recorded until the pig casing is torn and the power part one 2 is closed;

[0052] S5: After the pig casing sample 16 is torn, the power part one 2 controls the upward movement of the pressing rod 3, the power part three 85 is started, the sliding seat 81 is pushed towards the radial clamp 5, and the pressing rod 3 is rotated by 90°, and then the power part three 85 is stopped, at this time the power part two 46 is started, the sliding block 45 is moved away from the pig casing sample 16, so that the upper clamp plate 411 and the lower clamp plate 412 are away from the symmetry plane of the two radial clamps 5;

[0053] S6: When the clamp one 41 is away from the symmetry plane of the two radial clamps 5, the power part one 2 is started, the pressing rod 3 is pushed downwards, and the pressing plate 6 is extruded on the middle part of the pig casing sample 16, the pig casing sample 16 is stretched by the downward pressing of the pressing rod 3 until the pig casing sample 16 is torn, the power part one 2 is stopped, and the numerical relationship between the displacement of the pressing rod 3 and the pressure sensor is recorded again, and the pig casing is torn again, and the power part one 2 is closed;

[0054] S7: After the pig casing sample 16 is torn, the power part one 2 controls the upward movement of the pressing rod 3, the power part three 85 is started, the sliding seat 81 is pushed towards the symmetry plane of the transverse clamp, and the pressing rod 3 is rotated by 90°, and then the power part three 85 is stopped, and the radial clamp 5 and the clamp two 42 are closed;

[0055] S8: Finally, clean the test bench 1 of the remaining pig casing sample.

[0056] The above detailed description of a specific embodiment of the application is made with reference to the accompanying drawings, but the application is not limited to the above described embodiment. Various changes, modifications, substitutions and variations of the embodiments can be made by those skilled in the art without departing from the principles and spirit of the application, and should still fall within the scope of the application.

Claims

1. A device for testing the softness of a pig casing, characterized in that, Including test platform (1), power element one (2), pressure bar (3), axial clamp (4), the test platform (1) is equipped with power element one (2), the pressure bar (3) is connected with power element one (2), the pressure bar (3) is equipped with pressure plate (6), the pressure plate (6) is equipped with pressure sensor at the connecting part of pressure bar (3), the test platform (1) is symmetrically equipped with two axial clamps (4) and two radial clamps (5), the symmetry plane of two axial clamps (4) is perpendicular to the symmetry plane of two radial clamps (5), wherein one axial clamp (4) is equipped with cutter (7), the cutter (7) is cut through the axial clamp (4) power to pig casing, two radial clamps (5) are used to clamp the pig casing of cutting part, the test platform (1) is equipped with rotating assembly (8), the rotating assembly (8) is used to control the rotation of pressure bar (3), and the rotation angle is a right angle; The axial clamp (4) includes clamp one (41) and clamp two (42), the clamp one (41) includes two upper clamping plates (411) and two lower clamping plates (412), the two upper clamping plates (411) and the two lower clamping plates (412) are connected with slide rods (43), the test platform (1) is symmetrically equipped with two inclined sliding grooves (44), the two slide rods (43) are slidingly installed in the sliding grooves (44), the test platform (1) is slidingly installed with two slide rods (43), the two slide rods (43) are slidingly connected with slide blocks (45), the test platform (1) is equipped with power element two (46), the power element two (46) is used to drive the slide blocks (45) to reciprocate, two upper clamping plates (411) are equipped with cutters (7), the clamp two (42) and the radial clamp (5) are both electromagnetic clamps, the two upper clamping plates (411) and the two lower clamping plates (412) are symmetrically arranged on the two sides of the radial clamp (5).

2. A device for testing the softness of a hog casing according to claim 1, wherein, The rotating assembly (8) includes sliding seat (81) and rotating seat (82), the sliding seat (81) is slidingly installed on the test platform (1), the rotating seat (82) is rotatably installed on the sliding seat (81), the rotating seat (82) is equipped with gear (83), the power element one (2) is arranged on the rotating seat (82), the test platform (1) is equipped with rack (84) engaged with gear (83), the test platform (1) is equipped with power element three (85), the power element three (85) is used to drive the sliding seat (81) to reciprocate.

3. A device for testing the flexibility of a hog casing according to claim 1, wherein, The upper clamping plate (411) is equipped with pre-compression spring (9), the pre-compression spring (9) is connected with upper pressure plate (10), the sliding groove (44) is divided into inclined part (441) and horizontal part (442), the inclined part (441) is arranged obliquely, and the horizontal part (442) is arranged horizontally.

4. A device for testing the softness of a hog casing according to claim 3, wherein, The lower clamp plate (412) is slidably installed with a lower pressing plate (11), the lower pressing plate (11) is provided with a reset plate (12), the reset plate (12) is connected with a reset spring (13), and one end of the reset spring (13) abuts against the lower clamp plate (412), the test table (1) is provided with a limiting block (14), the limiting block (14) is provided with two limiting protrusions (141), and the two limiting protrusions (141) abut against the upper pressing plate (10) and the lower pressing plate (11).

5. A device for testing the flexibility of a hog casing according to claim 4, characterized in that, The cutter (7) is attached to the radial clamp (5), the lower clamp plate (412) is attached to the test table (1), and a straight chamfer (15) is arranged on the side of the lower clamp plate (412) attached to the test table (1), and the width of the straight chamfer (15) is 0.2mm-0.4mm less than the width of the cutter (7).

6. A device for testing the flexibility of a hog casing according to claim 5, wherein, The limiting block (14) is provided with a limiting groove (142), the limiting groove (142) wraps the upper clamp plate (411) and the lower clamp plate (412), and the limiting groove (142) limits the upper clamp plate (411) and the lower clamp plate (412) in the vertical direction and horizontally in the direction perpendicular to the movement direction of the sliding block (45).

7. A test method applied to the test device for the softness of the pig casing according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: S1: First, cut the pig casing into a rectangular sample; S2: Then place the pig casing sample (16) on the test table (1), first start the clamp two (42) to clamp one end of the pig casing sample (16), and then start the radial clamp (5) to clamp the pig casing sample (16); S3: After the radial clamp (5) clamps the pig casing sample (16), start the clamp one (41) to clamp the pig casing sample (16) and cut the pig casing sample (16); S4: After the clamp one (41) completes the cutting of the pig casing sample (16), the power component one (2) is started, the pressing rod (3) is pushed to move downward, the pressing plate (6) is pressed on the middle part of the pig casing sample (16), the pig casing sample (16) is stretched by the downward pressing of the pressing rod (3), and the power component one (2) is stopped until the pig casing sample (16) is torn; the numerical relationship between the displacement of the pressing rod (3) and the pressure sensor is recorded until the pig casing is torn, and the power component one (2) is closed; S5: After the pig casing sample (16) is torn, the power component one (2) controls the upward movement of the pressing rod (3), the rotating assembly (8) is started, and the action is stopped after the pressing rod (3) is rotated by 90°, and then the clamp one (41) is started, so that the clamp one (41) no longer clamps the pig casing sample (16); S6: When the clamp one (41) no longer clamps the sample, the power component one (2) is started, the pressing rod (3) is pushed to move downward, the pressing plate (6) is pressed on the middle part of the pig casing sample (16), the pig casing sample (16) is stretched by the downward pressing of the pressing rod (3), and the power component one (2) is stopped until the pig casing sample (16) is torn; the numerical relationship between the displacement of the pressing rod (3) and the pressure sensor is recorded again, and the power component one (2) is closed after the pig casing is torn again; S7: After the pig casing sample (16) is torn, the power unit one (2) controls the plunger (3) to move up, the rotating assembly (8) is started, and stops working after the plunger (3) rotates 90°, and the radial clamp (5) and the clamp two (42) are closed; S8: Finally, clean the residual pig casing sample on the test bench (1).

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