Leather softening detection device and detection method

Abstract

The present invention discloses a leather softening detection device and detection method, and relates to the technical field of detection equipment. It comprises a fixed table, a clamping plate is horizontally inserted on the upper part of the fixed table, and the softened leather is placed flatly on the upper part of the clamping plate. A support frame is fixedly provided on the upper part of the fixed table, and a detection component is provided in the inner cavity of the support frame for longitudinal movement through a hydraulic cylinder. The detection component is connected to a control center, and the detection component cooperates with the clamping plate to detect the softness of the entire surface of the leather. The detection component can clamp the entire piece of leather flatly on the clamping plate, and perform softness detection on multiple areas of the leather through a compression component. Compared with traditional softness detectors, the detection efficiency is improved several times, and the staff has sufficient time to perform softness detection on the leather in the same batch of soft stretching processes, thereby improving the quality of the leather and effectively reducing the output of unqualified leather.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, and in particular to a leather softening detection device and a detection method. Background Art

[0002] Softening is also known as scraping softening. It is a process in leather making. After the wet leather is dried, the leather fibers stick together, the leather body shrinks, and it becomes uneven and hard. Softening can make the leather bend and stretch, so that the leather fibers are moderately loose and become soft and stretchable to meet the requirements of the next step of processing. Before softening, the dry leather needs to be wetted to a suitable moisture content to prevent the leather fibers from being mechanically damaged.

[0003] After the leather is softened, it is necessary to test the softness of the leather to understand whether the softness of the leather after softening is qualified. The unqualified leather needs to continue the softening process. However, due to the large number of leathers that need to be softened in industrial production, the softness test of leather is mostly carried out manually using a softness tester. The existing softness tester can only test a certain part of the leather each time. In order to ensure the quality of the test, it is necessary to select multiple test areas of the leather for multiple tests, resulting in low test efficiency. In order to improve work efficiency, the staff can only conduct random sampling for testing. However, due to the different humidity and quality of each piece of leather, this testing method will result in a large difference in the softness of the same batch of leather, and even unqualified products will appear, affecting the quality of the leather.

[0004] Therefore, we make improvements on this and propose a leather softening detection device and detection method. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a leather softening detection device and method, which solves the problem that due to the huge amount of leather that needs to be softened in industrial production and the low detection efficiency of the existing softness detector, the leather softness detection can only be carried out by random sampling, resulting in a large difference in leather quality.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a leather softening detection device, comprising a fixed platform, a clamping plate is horizontally inserted on the upper part of the fixed platform, the softened leather is flatly placed on the upper part of the clamping plate, a support frame is fixed on the upper part of the fixed platform, the inner cavity of the support frame is provided with a detection component which is longitudinally moved by a hydraulic cylinder, the detection component is connected to a control center, and the detection component cooperates with the clamping plate to simultaneously detect the softness of multiple places on the entire surface of the leather;

[0007] The detection component includes a clamping plate, a fixed plate, a mounting plate and a compression assembly. The clamping plate is arranged at the lower part of the fixed plate through a nitrogen spring. There are multiple nitrogen springs. The multiple nitrogen springs are evenly fixedly arranged on the upper surface of the fixed plate away from the center of the circle along the axis of the fixed plate. The piston rod of the nitrogen spring is fixed to the upper surface of the clamping plate. The mounting plate is fixedly arranged on the upper part of the fixed plate through a fixed rod. There are multiple fixed rods. Both ends of the multiple fixed rods are evenly fixed to the lower surface of the mounting plate away from the center of the circle and the upper surface of the fixed plate away from the center of the circle along the axis of the fixed plate. The middle part of the upper surface of the mounting plate is fixedly connected to the piston rod of the hydraulic cylinder. The hydraulic cylinder is fixedly arranged at the upper middle end of the support frame.

[0008] There are multiple compression assemblies, and the multiple compression assemblies are arranged on the fixed disk, one of which is arranged on the upper surface of the center of the fixed disk, and the remaining compression assemblies are evenly fixed along the axis of the fixed disk on the upper surface of the fixed disk away from the center of the circle;

[0009] A stepper motor is fixedly provided at the center position of the circle of the lower surface of the mounting plate, a threaded rod is fixedly provided on the piston rod of the stepper motor, a threaded sleeve is threadedly connected to the threaded rod, a displacement disk is fixedly provided on the middle fixed sleeve of the threaded sleeve, an air avoidance tube is fixedly connected to the bottom of the threaded sleeve, and the end of the threaded rod is movably provided in the air avoidance tube;

[0010] A displacement sensor is fixedly arranged on the lower surface of the displacement plate, and the displacement sensor is a self-resetting resistance displacement sensor, and the head of the displacement sensor is fitted on the upper surface of the fixed plate;

[0011] A displacement rod is longitudinally arranged at the bottom of the air avoidance tube, and a displacement rod is evenly longitudinally arranged on the lower surface of the displacement disk along the axis of the displacement disk. The displacement rods are arranged one by one corresponding to the compression components, and the ends of the displacement rods are fixedly connected to the upper part of the compression component.

[0012] As a preferred solution, the radial lines of the nitrogen spring, the fixed rod and the fixed disk are arranged to coincide with each other, the fixed rod is arranged outside the nitrogen spring, the compression assembly and the nitrogen spring evenly arranged along the axis of the fixed disk are at the same distance from the center of the fixed disk, and the compression assembly is arranged between two adjacent nitrogen springs;

[0013] The axes of the clamping plate, the fixing plate, the mounting plate and the displacement plate are arranged to coincide with each other.

[0014] As a preferred solution, the compression assembly includes a fixed tube, a sliding tube, a plate-shaped probe, a pressure sensor, an adjusting disk, a fixed circular plate and a sealing disk, the fixed tube is fixedly arranged on the fixed disk, the sliding tube is slidably arranged in the inner cavity of the fixed tube, the plate-shaped probe is clamped in the inner cavity of the sliding tube, the head of the plate-shaped probe is penetrated by the fixed tube and the sliding tube, the pressure sensor is fixed to the lower surface of the adjusting disk, the pressure sensor is arranged in the inner cavity of the sliding tube, the fixed circular plate is connected to the adjusting disk through an adjusting bolt, the fixed circular plate is threadedly fixed to the upper part of the sliding tube, the sealing disk is threadedly fixed to the upper part of the fixed tube, and the sealing disk is fitted with the fixed circular plate;

[0015] The displacement rod and the sealing plate are interpenetratingly arranged, and the head of the displacement rod is fixedly connected to the upper surface of the fixed circular plate.

[0016] As a preferred solution, a baffle is provided at the tail of the plate-shaped probe, and the plate-shaped probe is clamped in the inner cavity of the sliding tube through the baffle;

[0017] The bottom of the fixed tube and the sliding tube is provided with a through hole, which is a rectangular hole structure. The through holes of the fixed tube and the sliding tube are overlapped, and the plate-like probe passes through the fixed tube and the sliding tube through the through hole. The plate-like probe is prevented from rotating through the through hole.

[0018] As a preferred solution, there are two adjusting bolts, which are symmetrically arranged on the upper surface of the fixed circular plate, the fixed circular plate and the adjusting bolts are threadedly connected, the adjusting disk and the head of the adjusting bolts are axially connected, and the pressure sensor adjusts the position of the pressure sensor through the adjusting bolts, so that the probe of the pressure sensor is tightly fitted with the baffle;

[0019] The upper part of the sealing disk is symmetrically provided with through holes, and the tail of the adjusting bolt is arranged in the through hole.

[0020] As a preferred solution, the clamping disk and the fixed disk are arranged through the plate-like probe, the head of the plate-like probe is arranged between the clamping disk and the fixed disk, and the length of the plate-like probe arranged between the clamping disk and the fixed disk is the same as the thickness of the clamping disk.

[0021] As a preferred solution, the lower surface of the clamping disc is provided with a plurality of clamping rings arranged one-to-one with the compression components, the upper surface of the clamping plate is provided with a plurality of clamping slots arranged one-to-one with the clamping rings, the clamping slots are circular blind hole structures, a placement ring is provided in the middle of the clamping slots, an air avoidance hole is provided in the middle of the clamping slots, and the air avoidance hole is provided in the middle of the placement ring;

[0022] The clamping ring can be inserted into the clamping slot, and the clamping ring can be sleeved on the outside of the placement ring. When the clamping ring is inserted into the clamping slot, a gap is provided between the clamping ring, the clamping slot and the placement ring. The gap between the clamping ring, the clamping slot and the placement ring can prevent the leather from being damaged.

[0023] A detection ring is placed in the inner cavity of the placement ring. The detection ring is provided with various sizes to facilitate the softness detection of leathers for different purposes.

[0024] As a preferred solution, the upper surface of the fixing platform near the middle of the fixing platform is symmetrically provided with guide rails along the length direction of the fixing platform, the lower surface of the clamping plate is symmetrically provided with guide rail slot blocks, the lower surface of the guide rail slot blocks is provided with guide rail slots along the length direction of the guide rail slot blocks, and the guide rail slots of the guide rail slot blocks are slidably arranged with the guide rail slots;

[0025] The side walls on both sides of the fixed platform in the width direction are longitudinally symmetrically provided with baffles, and the two ends of the guide rail are fixedly connected to the bottom of the inner wall of the baffle;

[0026] A baffle plate disposed on one side of the fixed platform is provided with an installation opening, the upper surface of the clamping plate is fitted with the upper side wall of the installation opening, and the guide rail slot block of the clamping plate is placed on the guide rail through the installation opening;

[0027] A baffle plate arranged on the other side of the fixed platform is provided with a positioning groove in the transverse direction, and a side wall of one side of the clamping plate is provided with a positioning strip, which is inserted into the positioning groove. The positioning strip cooperates with the positioning groove to prevent the clamping plate from moving longitudinally;

[0028] A stopper is axially connected to the upper part of the baffle plate with the installation opening. The stopper is arranged just above the installation opening. The front end of the stopper can be fitted on the side wall of the clamping plate by rotation to prevent the positioning strip from being separated from the positioning groove.

[0029] As a preferred solution, a positioning plate is symmetrically arranged laterally on the upper part of the fixed table, and the two ends of the positioning plate are fixedly connected to the inner walls of the baffles arranged on the side walls on both sides of the width direction of the fixed table, and the side walls on both sides of the clamping plate are fitted with the side walls of the positioning plate, and the positioning plate can prevent the clamping plate from moving laterally.

[0030] A leather softening detection method comprises the following steps:

[0031] Step 1: Place the detection ring, pull the clamping plate out of the fixing table through the installation port, select the detection ring, place the detection ring in the placement ring, and then reinsert the clamping plate into the fixing table, turn the stopper, and fix the clamping plate;

[0032] Step 2: Place the leather flat on the clamping plate;

[0033] Step 3: Start the detection component to test the softness of the leather. The hydraulic cylinder is started to fit the clamping plate to the leather. The nitrogen spring elastically squeezes the clamping plate onto the leather. The hydraulic cylinder continues to press down, and the clamping plate fits the fixed plate. At this time, the clamping ring is inserted into the clamping slot. The leather placed on the upper part of the detection ring is flatly fixed on the upper part of the detection ring through the set of the clamping ring and the placement ring. At the same time, the head of the plate-shaped probe is fitted to the leather placed on the upper part of the detection ring.

[0034] The stepper motor starts, the threaded rod drives the displacement plate to descend at a set speed through the threaded sleeve, the displacement plate drives the displacement rod to descend, the displacement rod drives the plate-shaped probe to move downward through the sliding tube, and the leather placed on the upper part of the detection ring is compressed. The pressure sensor detects the pressure on the leather, and the displacement sensor detects the deformation of the leather. After the plate-shaped probe moves down to a preset distance, the stepper motor stops working;

[0035] Step 4: Calculate the softness of the leather. The pressure sensor transmits the electrical signal of the pressure value of the leather to the control center, and the displacement sensor transmits the electrical signal of the deformation of the leather to the control center. The control center calculates the softness of the leather according to the ratio of the values ​​transmitted by the pressure sensor and the displacement sensor.

[0036] Step 5: The detection component is reset, the stepper motor is started, the plate probe and the displacement sensor are reset to the initial position through the displacement disk, the hydraulic cylinder is started, the detection component is lifted to the upper part of the clamping plate, and the leather is taken out.

[0037] The present invention has the following beneficial effects:

[0038] The detection component can clamp the entire piece of leather flatly on the clamping plate, and perform softness detection on multiple areas of the leather through the compression component. With one detection, the softness of multiple areas of the entire leather can be detected. Compared with traditional softness testers, the detection efficiency is improved several times. Therefore, the staff does not need to use random sampling to improve work efficiency. The staff has sufficient time to conduct softness detection on the same batch of leather in the soft drawing process, thereby improving the quality of the leather and effectively reducing the output of unqualified leather.

[0039] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a schematic diagram of the structure of the detection component of the present invention;

[0042] Figure 3It is a schematic diagram of the assembly structure of the fixing table and the clamping plate of the present invention;

[0043] Figure 4 It is a schematic diagram of the exploded structure of the compression assembly of the present invention;

[0044] Figure 5 It is a schematic diagram of the structure of the clamping disk of the present invention;

[0045] Figure 6 It is a schematic diagram of the structure of the clamping plate of the present invention;

[0046] Figure 7 It is a schematic diagram of the structure of the fixing platform of the present invention;

[0047] Figure 8 It is a schematic diagram of the detection ring structure of the present invention;

[0048] In the figure, 1, fixed platform; 2, clamping plate; 3, support frame; 4, hydraulic cylinder; 5, detection component; 6, control center; 7, clamping plate; 8, fixed plate; 9, mounting plate; 10, compression assembly; 11, nitrogen spring; 12, fixed rod; 13, stepping motor; 14, threaded rod; 15, threaded sleeve; 16, displacement plate; 17, air avoidance tube; 18, displacement sensor; 19, displacement rod; 20, fixed tube; 21, sliding tube; 22. Plate-shaped probe; 23. Pressure sensor; 24. Adjusting disk; 25. Fixed circular plate; 26. Sealing disk; 27. Adjusting bolt; 28. Baffle; 29. ​​Clamping ring; 30. Clamping slot; 31. Placement ring; 32. Avoidance hole; 33. Detection ring; 34. Guide rail; 35. Guide rail slot block; 36. Guide rail slot; 37. Baffle; 38. Mounting port; 39. Positioning slot; 40. Positioning strip; 41. Baffle; 42. Positioning plate. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] For examples, see Figures 1 to 8The embodiment of the present invention provides a technical solution: a leather softening detection device, comprising a fixed platform 1, a clamping plate 2 is horizontally inserted on the upper part of the fixed platform 1, and the softened leather is placed flat on the upper part of the clamping plate 2, and a support frame 3 is fixed on the upper part of the fixed platform 1. The inner cavity of the support frame 3 is longitudinally moved by a hydraulic cylinder 4 and is provided with a detection component 5, and the detection component 5 is connected to a control center 6. The detection component 5 cooperates with the clamping plate 2 to simultaneously detect the softness of the entire surface of the leather at multiple locations;

[0052] The detection component 5 includes a clamping plate 7, a fixed plate 8, a mounting plate 9 and a compression assembly 10. The clamping plate 7 is arranged at the lower part of the fixed plate 8 through a nitrogen spring 11. There are multiple nitrogen springs 11. The multiple nitrogen springs 11 are evenly fixedly arranged on the upper surface of the fixed plate 8 away from the center of the circle along the axis of the fixed plate 8. The piston rod of the nitrogen spring 11 is fixed to the upper surface of the clamping plate 7. The mounting plate 9 is fixedly arranged on the upper part of the fixed plate 8 through a fixing rod 12. There are multiple fixing rods 12. Both ends of the multiple fixing rods 12 are evenly fixed to the lower surface of the mounting plate 9 away from the center of the circle and the upper surface of the fixed plate 8 away from the center of the circle along the axis of the fixed plate 8. The middle part of the upper surface of the mounting plate 9 is fixedly connected to the piston rod of the hydraulic cylinder 4. The hydraulic cylinder 4 is fixedly arranged at the upper middle end of the support frame 3.

[0053] The compression assembly 10 is provided in plurality, and the plurality of compression assemblies 10 are arranged on the fixed disk 8, wherein one compression assembly 10 is arranged on the upper surface of the center of the fixed disk 8, and the remaining compression assemblies 10 are evenly fixedly arranged on the upper surface of the fixed disk 8 away from the center of the circle along the axis of the fixed disk 8;

[0054] A stepper motor 13 is fixedly provided at the center of the circle of the lower surface of the mounting plate 9, a threaded rod 14 is fixedly provided on the piston rod of the stepper motor 13, a threaded sleeve 15 is threadedly connected to the threaded rod 14, a displacement plate 16 is fixedly provided on the middle part of the threaded sleeve 15, an air avoidance tube 17 is fixedly provided at the bottom of the threaded sleeve 15, and the end of the threaded rod 14 is movably provided in the air avoidance tube 17;

[0055] A displacement sensor 18 is fixedly disposed on the lower surface of the displacement plate 16. The displacement sensor 18 is a self-resetting resistance displacement sensor. The head of the displacement sensor 18 is fitted to the upper surface of the fixed plate 8.

[0056] A displacement rod 19 is longitudinally provided at the bottom of the air avoidance tube 17, and a displacement rod 19 is evenly longitudinally provided on the lower surface of the displacement disk 16 along the axis of the displacement disk 16. The displacement rod 19 is arranged one-to-one correspondingly to the compression assembly 10, and the end of the displacement rod 19 is fixedly connected to the upper part of the compression assembly 10.

[0057] The radial lines of the nitrogen spring 11, the fixed rod 12, and the fixed disk 8 are arranged to coincide with each other, the fixed rod 12 is arranged on the outside of the nitrogen spring 11, the compression assembly 10 and the nitrogen spring 11, which are evenly arranged along the axis of the fixed disk 8, are at the same distance from the center of the fixed disk 8, and the compression assembly 10 is arranged between two adjacent nitrogen springs 11;

[0058] The axes of the clamping plate 7, the fixing plate 8, the mounting plate 9 and the displacement plate 16 are arranged to coincide with each other.

[0059] The compression assembly 10 includes a fixed tube 20, a sliding tube 21, a plate-shaped probe 22, a pressure sensor 23, an adjusting disk 24, a fixed circular plate 25 and a sealing disk 26. The fixed tube 20 is fixedly arranged on the fixed disk 8, the sliding tube 21 is slidably arranged in the inner cavity of the fixed tube 20, the plate-shaped probe 22 is clamped in the inner cavity of the sliding tube 21, the head of the plate-shaped probe 22 is penetrated by the fixed tube 20 and the sliding tube 21, the pressure sensor 23 is fixed to the lower surface of the adjusting disk 24, the pressure sensor 23 is arranged in the inner cavity of the sliding tube 21, the fixed circular plate 25 is connected to the adjusting disk 24 by an adjusting bolt 27, the fixed circular plate 25 is threadedly fixed to the upper part of the sliding tube 21, the sealing disk 26 is threadedly fixed to the upper part of the fixed tube 20, and the sealing disk 26 is fitted with the fixed circular plate 25;

[0060] The displacement rod 19 and the sealing plate 26 are interpenetratingly arranged, and the head of the displacement rod 19 is fixedly connected to the upper surface of the fixed circular plate 25 .

[0061] The tail of the plate-shaped probe 22 is provided with a baffle 28, and the plate-shaped probe 22 is clamped in the inner cavity of the sliding tube 21 through the baffle 28;

[0062] The bottom of the fixed tube 20 and the sliding tube 21 is provided with a through hole, which is a rectangular hole structure. The through holes of the fixed tube 20 and the sliding tube 21 are overlapped, and the plate-like probe 22 passes through the fixed tube 20 and the sliding tube 21 through the through hole. The plate-like probe 22 is prevented from rotating by the through hole.

[0063] There are two adjusting bolts 27, which are symmetrically arranged on the upper surface of the fixed circular plate 25. The fixed circular plate 25 is threadedly connected to the adjusting bolts 27, and the adjusting disk 24 is axially connected to the head of the adjusting bolts 27. The pressure sensor 23 adjusts the position of the pressure sensor 23 through the adjusting bolts 27, so that the probe of the pressure sensor 23 is closely fitted with the baffle 28.

[0064] The upper portion of the sealing disk 26 is symmetrically provided with through holes, and the tail of the adjusting bolt 27 is arranged in the through hole.

[0065] The clamping disk 7 and the fixed disk 8 are intersected with the plate-like probe 22 , the head of the plate-like probe 22 is arranged between the clamping disk 7 and the fixed disk 8 , and the length of the plate-like probe 22 arranged between the clamping disk 7 and the fixed disk 8 is the same as the thickness of the clamping disk 7 .

[0066] The lower surface of the clamping plate 7 is provided with a plurality of clamping rings 29 corresponding to the compression components 10, and the upper surface of the clamping plate 2 is provided with a plurality of clamping slots 30 corresponding to the clamping rings 29. The clamping slots 30 are circular blind hole structures. A placement ring 31 is provided in the middle of the clamping slots 30. An air avoidance hole 32 is provided in the middle of the clamping slots 30. The air avoidance hole 32 is provided in the middle of the placement ring 31.

[0067] The clamping ring 29 can be inserted into the clamping slot 30, and the clamping ring 29 can be sleeved on the outside of the placement ring 31. When the clamping ring 29 is inserted into the clamping slot 30, a gap is provided between the clamping ring 29, the clamping slot 30 and the placement ring 31. The gap between the clamping ring 29, the clamping slot 30 and the placement ring 31 can prevent the leather from being damaged.

[0068] A detection ring 33 is placed in the inner cavity of the placement ring 31. The detection ring 33 is provided with various sizes to facilitate the softness detection of leather for different purposes.

[0069] The upper surface of the fixing platform 1 near the middle of the fixing platform 1 is symmetrically provided with guide rails 34 along the length direction of the fixing platform 1, and the lower surface of the clamping plate 2 is symmetrically provided with guide rail groove blocks 35. The lower surface of the guide rail groove block 35 is provided with guide rail grooves 36 along the length direction of the guide rail groove block 35. The guide rail grooves 36 of the guide rail groove block 35 are slidably arranged with the guide rail grooves 36;

[0070] The side walls of the fixed platform 1 on both sides in the width direction are longitudinally symmetrically provided with baffles 37, and the two ends of the guide rail 34 are fixedly connected to the bottom of the inner wall of the baffle 37;

[0071] The baffle plate 37 disposed on one side of the fixing platform 1 is provided with a mounting opening 38, the upper surface of the clamping plate 2 is fitted with the upper side wall of the mounting opening 38, and the guide rail slot block 35 of the clamping plate 2 is placed on the guide rail 34 through the mounting opening 38;

[0072] The baffle plate 37 disposed on the other side of the fixing platform 1 is provided with a positioning groove 39 in the transverse direction, and a positioning bar 40 is provided on one side wall of the clamping plate 2. The positioning bar 40 is inserted into the positioning groove 39. The positioning bar 40 cooperates with the positioning groove 39 to prevent the clamping plate 2 from moving longitudinally.

[0073] The baffle 37 with the mounting opening 38 is axially connected with a stopper 41 on the upper part. The stopper 41 is arranged just above the mounting opening 38 . The front end of the stopper 41 can be fitted on the side wall of the clamping plate 2 by rotation to prevent the positioning strip 40 from being separated from the positioning groove 39 .

[0074] A positioning plate 42 is symmetrically arranged on the upper part of the fixed platform 1, and both ends of the positioning plate 42 are fixedly connected to the inner walls of the baffles 37 arranged on the side walls on both sides of the width direction of the fixed platform 1. The side walls on both sides of the clamping plate 2 are fitted with the side walls of the positioning plate 42, and the positioning plate 42 can prevent the clamping plate 2 from moving laterally.

[0075] The displacement sensor 18 and the pressure sensor 23 are electrically connected to the control center 6 .

[0076] A leather softening detection method, characterized in that it comprises the following steps:

[0077] Step 1: Place the detection ring 33, pull the clamping plate 2 out of the fixing table 1 through the installation opening 38, select the detection ring 33, place the detection ring 33 in the placement ring 31, and then reinsert the clamping plate 2 into the fixing table 1, rotate the stopper 41, and fix the clamping plate 2;

[0078] Step 2: Place the leather flat on the clamping plate 2;

[0079] Step 3: Start the detection component 5 to detect the softness of the leather. The hydraulic cylinder 4 is started to fit the clamping plate 7 to the leather. The nitrogen spring 11 elastically squeezes the clamping plate 7 onto the leather. The hydraulic cylinder 4 continues to press down, and the clamping plate 7 fits with the fixed plate 8. At this time, the clamping ring 29 is inserted into the clamping slot 30. The leather placed on the upper part of the detection ring 33 is flatly fixed on the upper part of the detection ring 33 through the set cooperation of the clamping ring 29 and the placement ring 31. At the same time, the head of the plate-shaped probe 22 is fitted with the leather placed on the upper part of the detection ring 33.

[0080] The stepper motor 13 is started, the threaded rod 14 drives the displacement plate 16 to descend at a set speed through the threaded sleeve 15, the displacement plate 16 drives the displacement rod 19 to descend, the displacement rod 19 drives the plate-shaped probe 22 to move downward through the sliding tube 21, and compresses the leather placed on the upper part of the detection ring 33, the pressure sensor 23 detects the pressure on the leather, the displacement sensor 18 detects the deformation of the leather, and after the plate-shaped probe 22 moves down to a preset distance, the stepper motor 13 stops working;

[0081] Step 4: Calculate the softness of the leather. The pressure sensor 23 transmits the electric signal of the pressure value of the leather to the control center 6. The displacement sensor 18 transmits the electric signal of the deformation of the leather to the control center 6. The control center 6 calculates the softness of the leather according to the ratio of the values ​​transmitted by the pressure sensor 23 and the displacement sensor 18.

[0082] Step 5: The detection component 5 is reset, the stepper motor 13 is started, the plate-shaped probe 22 and the displacement sensor 18 are reset to the initial position through the displacement disk 16, the hydraulic cylinder 4 is started, the detection component 5 is lifted to the upper part of the clamping plate 2, and the leather is taken out.

[0083] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0084] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A leather softening detection device, characterized in that: The invention comprises a fixed platform (1), a clamping plate (2) is inserted transversely on the upper part of the fixed platform (1), a softened leather is placed flat on the upper part of the clamping plate (2), a support frame (3) is fixedly provided on the upper part of the fixed platform (1), a detection component (5) is provided in the inner cavity of the support frame (3) which is longitudinally movable by a hydraulic cylinder (4), the detection component (5) is connected to a control center (6), and the detection component (5) cooperates with the clamping plate (2) to simultaneously detect the softness of multiple places on the entire surface of the leather; The detection component (5) comprises a clamping plate (7), a fixed plate (8), a mounting plate (9) and a compression assembly (10); the clamping plate (7) is arranged at the lower part of the fixed plate (8) through a nitrogen spring (11); a plurality of nitrogen springs (11) are provided; the plurality of nitrogen springs (11) are evenly fixedly arranged on the upper surface of the fixed plate (8) away from the center of a circle along the axis of the fixed plate (8); a piston rod of the nitrogen spring (11) is fixed to the upper surface of the clamping plate (7); the mounting plate (9) is fixedly arranged on the upper part of the fixed plate (8) through a fixing rod (12); a plurality of fixing rods (12) are provided; two ends of the plurality of fixing rods (12) are evenly fixed to the lower surface of the mounting plate (9) away from the center of a circle and the upper surface of the fixed plate (8) away from the center of a circle along the axis of the fixed plate (8); the middle part of the upper surface of the mounting plate (9) is fixedly connected to the piston rod of the hydraulic cylinder (4); the hydraulic cylinder (4) is fixedly arranged at the upper middle end of the support frame (3); A plurality of the compression assemblies (10) are provided, and the plurality of the compression assemblies (10) are arranged on the fixed disk (8), wherein one compression assembly (10) is arranged on the upper surface of the center of the fixed disk (8), and the remaining compression assemblies (10) are evenly and fixedly arranged on the upper surface of the fixed disk (8) away from the center of the circle along the axis of the fixed disk (8); A stepper motor (13) is fixedly provided at the center position of the circle of the lower surface of the mounting plate (9); a threaded rod (14) is fixedly provided on the piston rod of the stepper motor (13); a threaded sleeve (15) is threadedly connected to the threaded rod (14); a displacement plate (16) is fixedly provided on the middle of the threaded sleeve (15); an air avoidance tube (17) is fixedly provided at the bottom of the threaded sleeve (15); and a distal end of the threaded rod (14) is movably provided in the air avoidance tube (17); A displacement sensor (18) is fixedly provided on the lower surface of the displacement disk (16); the displacement sensor (18) is a self-resetting resistance displacement sensor; and the head of the displacement sensor (18) is fitted to the upper surface of the fixing disk (8); A displacement rod (19) is longitudinally provided at the bottom of the air avoidance tube (17), and a displacement rod (19) is evenly longitudinally provided on the lower surface of the displacement disk (16) along the axis of the displacement disk (16), the displacement rods (19) and the compression components (10) are arranged one-to-one, and the ends of the displacement rods (19) are fixedly connected to the upper part of the compression component (10); The lower surface of the clamping disc (7) is provided with a plurality of clamping rings (29) arranged one-to-one with the compression components (10), and the upper surface of the clamping plate (2) is provided with a plurality of clamping slots (30) arranged one-to-one with the clamping rings (29), the clamping slots (30) are circular blind hole structures, a placement ring (31) is provided in the middle of the clamping slots (30), and an air avoidance hole (32) is provided in the middle of the clamping slots (30), and the air avoidance hole (32) is arranged in the middle of the placement ring (31); The clamping ring (29) can be inserted into the clamping slot (30), and the clamping ring (29) can be sleeved on the outside of the placement ring (31). When the clamping ring (29) is inserted into the clamping slot (30), a gap is provided between the clamping ring (29), the clamping slot (30) and the placement ring (31). The gap between the clamping ring (29), the clamping slot (30) and the placement ring (31) can prevent leather from being damaged. A detection ring (33) is placed in the inner cavity of the placement ring (31), and the detection ring (33) is provided with various sizes to facilitate the softness detection of leathers for different purposes.

2. The leather softening detection device according to claim 1, characterized in that: The nitrogen spring (11), the fixing rod (12) and the fixing disk (8) are arranged so that their radial lines coincide with each other, the fixing rod (12) is arranged outside the nitrogen spring (11), the compression assembly (10) and the nitrogen spring (11) are evenly arranged along the axis of the fixing disk (8) and are at the same distance from the center of the fixing disk (8), and the compression assembly (10) is arranged between two adjacent nitrogen springs (11); The axes of the clamping plate (7), the fixing plate (8), the mounting plate (9) and the displacement plate (16) are arranged to coincide with each other.

3. The leather softening detection device according to claim 1, characterized in that: The compression assembly (10) comprises a fixed tube (20), a sliding tube (21), a plate-shaped probe (22), a pressure sensor (23), an adjusting disk (24), a fixed circular plate (25) and a sealing disk (26); the fixed tube (20) is fixedly arranged on the fixed disk (8); the sliding tube (21) is slidably arranged in the inner cavity of the fixed tube (20); the plate-shaped probe (22) is clamped in the inner cavity of the sliding tube (21); the head of the plate-shaped probe (22) is connected to the fixed tube (20), The sliding tube (21) is arranged through, the pressure sensor (23) is fixed to the lower surface of the adjusting disk (24), the pressure sensor (23) is arranged in the inner cavity of the sliding tube (21), the fixed circular plate (25) is connected to the adjusting disk (24) through the adjusting bolt (27), the fixed circular plate (25) is threadedly fixed to the upper part of the sliding tube (21), the sealing disk (26) is threadedly fixed to the upper part of the fixed tube (20), and the sealing disk (26) and the fixed circular plate (25) are arranged in close contact with each other; The displacement rod (19) and the sealing plate (26) are intersected, and the head of the displacement rod (19) is fixedly connected to the upper surface of the fixed circular plate (25).

4. The leather softening detection device according to claim 3, characterized in that: A baffle (28) is provided at the rear of the plate-shaped probe (22), and the plate-shaped probe (22) is clamped into the inner cavity of the sliding tube (21) via the baffle (28); The bottoms of the fixed tube (20) and the sliding tube (21) are provided with through holes, the through holes being of a rectangular hole structure, the through holes of the fixed tube (20) and the sliding tube (21) are arranged to overlap, the plate-shaped probe (22) passes through the fixed tube (20) and the sliding tube (21) through the through holes, and the plate-shaped probe (22) is prevented from rotating by the through holes.

5. The leather softening detection device according to claim 4, characterized in that: There are two adjusting bolts (27), the two adjusting bolts (27) are symmetrically arranged on the upper surface of the fixed circular plate (25), the fixed circular plate (25) and the adjusting bolts (27) are threadedly connected, the adjusting disk (24) and the head of the adjusting bolt (27) are axially connected, and the pressure sensor (23) adjusts the position of the pressure sensor (23) through the adjusting bolts (27), so that the probe of the pressure sensor (23) and the baffle (28) are closely fitted; The upper portion of the sealing disk (26) is symmetrically provided with through holes, and the tail of the adjusting bolt (27) is arranged in the through hole.

6. The leather softening detection device according to claim 3, characterized in that: The clamping disk (7) and the fixed disk (8) are intersected by the plate-shaped probe (22), the head of the plate-shaped probe (22) is arranged between the clamping disk (7) and the fixed disk (8), and the length of the plate-shaped probe (22) arranged between the clamping disk (7) and the fixed disk (8) is the same as the thickness of the clamping disk (7).

7. The leather softening detection device according to claim 1, characterized in that: The upper surface of the fixing platform (1) near the middle of the fixing platform (1) is symmetrically provided with guide rails (34) along the length direction of the fixing platform (1), and the lower surface of the clamping plate (2) is symmetrically provided with guide rail groove blocks (35), and the lower surface of the guide rail groove block (35) is provided with guide rail grooves (36) along the length direction of the guide rail groove block (35), and the guide rail grooves (36) of the guide rail groove block (35) are slidably arranged with the guide rail grooves (36); The side walls of both sides of the fixed platform (1) in the width direction are longitudinally symmetrically provided with baffles (37), and the two ends of the guide rail (34) are fixedly connected to the bottom of the inner wall of the baffle (37); A baffle (37) disposed on one side of the fixed platform (1) is provided with a mounting opening (38); the upper surface of the clamping plate (2) is arranged to fit the upper side wall of the mounting opening (38); and the guide rail slot block (35) of the clamping plate (2) is placed on the guide rail (34) through the mounting opening (38); A baffle (37) disposed on the other side of the fixed platform (1) is provided with a positioning groove (39) in a transverse direction, and a side wall of the clamping plate (2) is provided with a positioning strip (40), the positioning strip (40) being inserted into the positioning groove (39), and the positioning strip (40) cooperates with the positioning groove (39) to prevent the clamping plate (2) from moving longitudinally; A stopper (41) is axially connected to the upper portion of a baffle (37) provided with a mounting opening (38). The stopper (41) is arranged directly above the mounting opening (38). The front end of the stopper (41) can be fitted onto the side wall of the clamping plate (2) by rotation, thereby preventing the positioning strip (40) from being separated from the positioning groove (39).

8. The leather softening detection device according to claim 7, characterized in that: A positioning plate (42) is symmetrically arranged on the upper part of the fixing platform (1) in a transverse direction. The two ends of the positioning plate (42) are fixedly connected to the inner walls of the two ends of the baffle (37) arranged on the side walls of the fixing platform (1) in the width direction. The side walls of the clamping plate (2) are fitted with the side walls of the positioning plate (42). The positioning plate (42) can prevent the clamping plate (2) from moving laterally.

9. A method for detecting leather softening, characterized in that: The method is applied to a leather softening detection device as claimed in any one of claims 1 to 8, and the method comprises the following steps: Step 1: Place the detection ring (33), pull the clamping plate (2) out of the fixing table (1) through the installation opening (38), select the detection ring (33), place the detection ring (33) in the placement ring (31), and then reinsert the clamping plate (2) into the fixing table (1), rotate the stopper (41), and fix the clamping plate (2); Step 2: Place the leather flat on the clamping plate (2); Step 3: Start the detection component (5) to detect the softness of the leather. The hydraulic cylinder (4) is started to fit the clamping plate (7) and the leather. The nitrogen spring (11) elastically squeezes the clamping plate (7) onto the leather. The hydraulic cylinder (4) continues to press downward, and the clamping plate (7) fits the fixed plate (8). At this time, the clamping ring (29) is inserted into the clamping slot (30). The leather placed on the upper part of the detection ring (33) is flatly fixed on the upper part of the detection ring (33) through the set cooperation of the clamping ring (29) and the placement ring (31). At the same time, the head of the plate-shaped probe (22) is fitted with the leather placed on the upper part of the detection ring (33); The stepper motor (13) is started, the threaded rod (14) drives the displacement plate (16) to descend at a set speed through the threaded sleeve (15), the displacement plate (16) drives the displacement rod (19) to descend, the displacement rod (19) drives the plate-shaped probe (22) to move downward through the sliding tube (21), and the leather placed on the upper part of the detection ring (33) is compressed, the pressure sensor (23) detects the pressure on the leather, the displacement sensor (18) detects the deformation of the leather, and after the plate-shaped probe (22) moves downward to a preset distance, the stepper motor (13) stops working; Step 4: Calculate the softness of the leather. The pressure sensor (23) transmits an electrical signal of the pressure value on the leather to the control center (6). The displacement sensor (18) transmits an electrical signal of the deformation value of the leather to the control center (6). The control center (6) calculates the softness of the leather based on the ratio of the values ​​transmitted by the pressure sensor (23) and the displacement sensor (18). Step 5: The detection component (5) is reset, the stepper motor (13) is started, the plate-shaped probe (22) and the displacement sensor (18) are reset to the initial position through the displacement plate (16), the hydraulic cylinder (4) is started, the detection component (5) is lifted to the upper part of the clamping plate (2), and the leather is taken out.

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