Leather tensile deformation testing device
By designing a leather tensile deformation testing device with a main support plate, a secondary support plate, and a drive mechanism, the problems of complex structure and high cost of traditional equipment have been solved. This device enables flexible tensile length testing, reduces equipment costs, and improves testing flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN ADONIS LEATHER CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional leather testing equipment is complex in structure, expensive, and lacks flexibility, and cannot flexibly adjust the stretching length.
A leather tensile deformation testing device was designed, comprising a main support plate, a secondary support plate, a clamp, and a drive mechanism. The secondary support plate is reciprocated through a linkage rod and a return assembly, the clamp is moved synchronously, and the drive head is replaceable to adapt to different tensile lengths.
The equipment structure has been simplified, costs have been reduced, and the flexibility and practicality of the equipment have been improved. The drive head can be replaced as needed to perform tests of different stretch lengths.
Smart Images
Figure CN224286529U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a testing device, and more particularly to a leather tensile deformation testing device. Background Technology
[0002] Leather is a natural polymer material with flexibility and breathability, produced through physical and chemical processes such as hair removal and tanning. It is widely used in clothing, footwear, bags, and furniture. Its performance can be evaluated through tensile deformation testing to analyze the leather's tensile strength, elastic recovery rate, and durability.
[0003] Traditional equipment for leather testing has a complex overall structure, is difficult to maintain, and has a high cost. In addition, traditional equipment for leather testing can only perform one type of tensile length test on leather, which is not flexible. Utility Model Content
[0004] Therefore, it is necessary to provide a leather tensile deformation testing device to address the shortcomings of existing technologies.
[0005] A leather tensile deformation testing device includes a main support plate, a secondary support plate slidably mounted on the main support plate, two clamps respectively mounted on the main support plate and the secondary support plate, and a drive mechanism for reciprocating adjustment of the secondary support plate. During reciprocating adjustment, the secondary support plate synchronously moves the clamps mounted on the secondary support plate. The drive mechanism includes a linkage rod, a return component, and an adjustment component. The return component and the adjustment component are respectively located on both sides of the linkage rod. The adjustment component pushes the secondary support plate away from the main support plate via the linkage rod. After the adjustment component releases the linkage rod, the return component pushes the secondary support plate back to its original position via the linkage rod. The adjustment component includes a rotating shaft, a drive head mounted on the upper end of the rotating shaft, and a drive motor directly or indirectly connected to the rotating shaft. The drive head is used to push the secondary support plate away from the main support plate, and the drive head can be freely installed and removed from the rotating shaft.
[0006] In one embodiment, the main support plate is provided with an adjustment groove on one side, and the upper end face of the main support plate and the bottom of the adjustment groove 11 are stepped. The secondary support plate is arranged in the adjustment groove of the main support plate, and the upper end faces of the main support plate and the secondary support plate are flush.
[0007] In one embodiment, the main support plate is further provided with an adjustment hole at the bottom of the adjustment groove 11. The adjustment hole 12 is elongated and its elongated direction is consistent with the adjustment direction of the secondary support plate. The linkage rod is cylindrical in shape, and one end of the linkage rod passes through the adjustment hole and is installed on the secondary support plate.
[0008] In one embodiment, a guide rail is also included. The guide rail is installed on the bottom surface of the sub-support plate along the adjustment direction of the sub-support plate. The guide rail is arranged in an inverted T-shape. The main support plate is further provided with a guide groove at the bottom of the adjustment groove. The guide groove is wider inside and narrower outside. During assembly, the guide rail is installed on the guide groove.
[0009] In one embodiment, the return assembly includes a push rod, a sleeve fitted onto one end of the push rod, and a return spring disposed inside the sleeve, with both ends of the return spring abutting against the sleeve and the push rod, respectively.
[0010] In one embodiment, the push rod has a mating groove at the end away from the return spring. The groove wall corresponds to the outer peripheral surface of the linkage rod. During assembly, the return spring pushes the push rod outward so that the groove wall of the push rod fits against the outer peripheral surface of the linkage rod.
[0011] In one embodiment, the positioning assembly further includes a bushing, the rotating shaft passes through the bushing, the drive head is mounted on the upper end of the rotating shaft, and the drive head includes a main body and a protrusion connected to the outer peripheral surface of the main body.
[0012] In one embodiment, the outer peripheral surface of the protrusion is spherical, and the main body is cylindrical in shape.
[0013] In one embodiment, the rotating shaft has a locking head at one end near the drive head, and the outer periphery of the locking head has a planar locking surface; the bottom center of the main body has an installation groove, the shape of which corresponds to the locking head, and the wall of the installation groove has a limiting surface; during assembly, the drive head is mounted on the locking head, the locking head is inserted into the installation groove, and the limiting surface and the locking surface are in contact.
[0014] In one embodiment, the clamp includes several columns, a crossbeam mounted on the columns, a pressure plate located below the crossbeam, an adjusting screw mounted on the crossbeam and extending into the pressure plate, and a positioning pin mounted on the pressure plate and cooperating with the adjusting screw. The columns pass through the pressure plate, and the pressure plate can be slidably adjusted along the column direction. The crossbeam has a screw hole penetrating the crossbeam vertically, and the hole wall of the screw hole has an internal thread. The adjusting screw is mounted on the screw hole through an external thread. The lower end of the adjusting screw has a positioning groove on its outer peripheral surface. During assembly, the lower end of the adjusting screw extends vertically into the pressure plate, and the positioning pin is mounted horizontally on the pressure plate, extending into the positioning groove of the adjusting screw.
[0015] The beneficial effects of this utility model's leather tensile deformation testing device are as follows: By setting up a main support plate, a secondary support plate, two clamps, and a driving mechanism, the secondary support plate slides on the main support plate, and the two clamps are respectively installed on the main support plate and the secondary support plate. During testing, the two clamps clamp the leather sample, and when the secondary support plate reciprocates, it drives the clamps installed on the secondary support plate to move synchronously, thereby performing a tensile test on the leather. This utility model has a simple overall structure, effectively reducing equipment costs, simplifying maintenance and installation, and the drive head on the driving mechanism can be replaced to meet different tensile length tests, offering good flexibility and strong practicality. Attached Figure Description
[0016] Figure 1 , Figure 2 Schematic diagrams of the leather tensile deformation testing device of this utility model at different angles;
[0017] Figure 3 for Figure 1 A schematic diagram of the drive mechanism of the leather tensile deformation testing device shown.
[0018] Figure 4 for Figure 3 An exploded view of the adjustment component of the drive mechanism shown.
[0019] Figure 5 for Figure 1 An exploded view of the fixture of the leather tensile deformation testing device shown. Detailed Implementation
[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0026] Please see Figures 1 to 5 This utility model provides a leather tensile deformation testing device, including a main support plate 10, a secondary support plate 20 slidably mounted on the main support plate 10, two clamps 40 respectively mounted on the main support plate 10 and the secondary support plate 20, and a drive mechanism 30 that drives the secondary support plate 20 to move back and forth. When the secondary support plate 20 moves back and forth, it drives the clamps 40 mounted on the secondary support plate 20 to move synchronously.
[0027] The main support plate 10 is provided with an adjustment groove 11 on one side. The upper end face of the main support plate 10 and the bottom of the adjustment groove 11 are stepped. The main support plate 10 is further provided with an adjustment hole 12 at the bottom of the adjustment groove 11. The adjustment hole 12 is elongated and the elongated direction of the adjustment hole 12 is consistent with the adjustment direction of the secondary support plate 20.
[0028] In addition, this utility model also includes a guide rail 80, which is installed on the bottom surface of the sub-support plate 20 along the adjustment direction of the sub-support plate 20. The guide rail 80 is arranged in an inverted T-shape. The main support plate 10 is further provided with a guide groove 13 at the bottom of the adjustment groove 11. The guide groove 13 is wider at the inside and narrower at the outside. During assembly, the sub-support plate 20 is set in the adjustment groove 11 of the main support plate 10. The upper surfaces of the main support plate 10 and the sub-support plate 20 are flush. The guide rail 80 is installed on the guide groove 13. Through the cooperation of the guide rail 80 and the guide groove 13, the sub-support plate 20 can be slidably adjusted on the main support plate 10.
[0029] The drive mechanism 30 includes a linkage rod 50, a return component 60, and an adjustment component 70. The return component 60 and the adjustment component 70 are respectively located on both sides of the linkage rod 50. The adjustment component 70 pushes the secondary support plate 20 to adjust away from the main support plate 10 through the linkage rod 50. After the adjustment component 70 releases the linkage rod 50, the return component 60 pushes the secondary support plate 20 back to its original position through the linkage rod 50.
[0030] Specifically, the linkage rod 50 is cylindrical in shape, with one end passing through the adjustment hole 12 and mounted on the auxiliary support plate 20. The return assembly 60 includes a push rod 61, a sleeve 62 fitted onto one end of the push rod 61, and a return spring 63 disposed inside the sleeve 62. The two ends of the return spring 63 abut against the sleeve 62 and the push rod 61, respectively. The end of the push rod 61 away from the return spring 63 is provided with a mating groove 611. The groove wall of the mating groove 611 is arc-shaped and corresponds to the outer peripheral surface of the linkage rod 50. During assembly, the sleeve 62 is mounted on an external frame, and the return spring 63 pushes the push rod 61 outward, causing the groove wall of the mating groove 611 of the push rod 61 to fit against the outer peripheral surface of the linkage rod 50.
[0031] The adjustment assembly 70 includes a bushing 71, a rotating shaft 72 passing through the bushing 71, a drive head 73 mounted on the upper end of the rotating shaft 72, and a drive motor connected to the rotating shaft 72. The rotating shaft 72 has a locking head 721 at one end near the drive head 73, and the outer periphery of the locking head 721 has a planar locking surface 722. The drive head 73 includes a main body 731 and a protrusion 732 connected to the outer periphery of the main body 731. The outer periphery of the protrusion 732 is spherical. The main body 731 is generally cylindrical, and a mounting groove 733 is provided at the center of its bottom end. The shape of the mounting groove 733 corresponds to the locking head 721, and a limiting surface 734 is provided on the groove wall of the mounting groove 733.
[0032] During assembly, the drive head 73 is mounted on the locking head 721, the locking head 721 is inserted into the mounting groove 733, and the limiting surface 734 is in contact with the locking surface 722. Through the cooperation between the limiting surface 734 and the locking surface 722, the drive head 73 is effectively prevented from rotating on the rotating shaft 72. The return spring 63 of the return assembly 60 presses the linkage rod 50 horizontally via the push rod 61, causing the linkage rod 50 to fit tightly against the drive head 73. The drive motor drives the drive head 73 to rotate around its axis via the rotating shaft 72. When the protrusion 732 on the drive head 73 passes over the outer peripheral surface of the linkage rod 50, the protrusion 732 presses the linkage rod 50, causing the secondary support plate 20 to shift away from the main support plate 10. After the protrusion 732 on the drive head 73 passes over the outer peripheral surface of the linkage rod 50, the return assembly 60 presses the linkage rod 50, and the secondary support plate 20 shifts away from the main support plate 10 until the linkage rod 50 fits against the outer peripheral surface of the main body 731. At this point, the linkage rod 50 abuts against the end of the wall of the adjusting hole 12. The sleeve 62 can limit the rotating shaft 72 to prevent it from tilting to one side, thereby ensuring that the linkage rod 50 and the drive head 73 always maintain a tight fit.
[0033] The clamp 40 includes several columns 41, a crossbeam 42 mounted on the columns 41, a pressure plate 43 located below the crossbeam 42, an adjusting screw 44 mounted on the crossbeam 42 and extending into the pressure plate 43, and a positioning pin 45 mounted on the pressure plate 43 and cooperating with the adjusting screw 44. The columns 41 pass through the pressure plate 43, and the pressure plate 43 can slide and adjust along the column 41 direction. The crossbeam 42 is provided with a screw hole 421 penetrating the crossbeam 42 in a vertical direction. The wall of the screw hole 421 is provided with internal threads. The rod 44 is installed on the screw hole 421 by external thread. The lower end of the adjusting screw 44 has a positioning groove 441 on its outer peripheral surface. During assembly, the lower end of the adjusting screw 44 extends vertically into the pressure plate 43. The adjusting screw 44 can rotate relative to the pressure plate 43. The positioning pin 45 is installed horizontally on the pressure plate 43 and extends into the positioning groove 441 of the adjusting screw 44. The positioning pin 45 limits the adjusting screw 44 in the vertical direction and does not interfere with the rotation of the positioning pin 45.
[0034] During assembly, the column 41 on one set of clamps 40 is installed vertically on the main support plate 10, and the column 41 on one set of clamps 40 is installed vertically on the auxiliary support plate 20. Rotating the adjusting screw 44, the adjusting screw 44 is adjusted up and down by engaging with the internal thread on the screw hole 421. During the adjustment process, the adjusting screw 44 drives the pressure plate 43 to adjust synchronously through the positioning pin 45.
[0035] Understandably, in this embodiment, the rotating shaft 72 is directly connected to the drive motor. In other embodiments, the rotating shaft 72 may also be indirectly connected to the drive motor through a gear set or other means.
[0036] Before testing, the linkage rod 50 is attached to the outer peripheral surface of the main body 731. Then, the leather sample is placed flat on the main support plate 10 and the secondary support plate 20. The adjusting screw 44 on the two clamps 40 is rotated so that the pressure plate 43 on the two clamps 40 presses the leather sample. The drive head 73 according to the required stretching length during the test is installed on the chuck 721 of the rotating shaft 72 (the main body 731 of different drive heads 73 has the same shape, the main difference is the size of the protrusion 732).
[0037] The drive motor drives the drive head 73 to rotate continuously via the rotating shaft 72. When the protrusion 732 on the drive head 73 passes over the outer peripheral surface of the linkage rod 50, the secondary support plate 20 is adjusted away from the main support plate 10. The clamped leather sample is in a stretched state. After the protrusion 732 on the drive head 73 passes over the outer peripheral surface of the linkage rod 50, the return assembly 60 drives the secondary support plate 20 to return to its original position. The secondary support plate 20 and the clamp 40 release the leather sample in the horizontal direction. As the drive head 73 continues to rotate, the leather sample is repeatedly stretched to perform a tensile test on the leather sample.
[0038] The beneficial effects of this utility model's leather tensile deformation testing device are as follows: By setting a main support plate 10, a secondary support plate 20, two clamps 40, and a drive mechanism 30, the secondary support plate 20 slides on the main support plate 10, and the two clamps 40 are respectively installed on the main support plate 10 and the secondary support plate 20. During testing, the two clamps 40 clamp the leather sample. When the secondary support plate 20 reciprocates, it drives the clamps 40 installed on the secondary support plate 20 to move synchronously, thereby performing a tensile test on the leather. This utility model has a simple overall structure, effectively reducing equipment costs, simplifying maintenance and installation. Moreover, the drive head 73 on the drive mechanism 30 can be replaced to accommodate different tensile length tests, offering good flexibility and strong practicality.
[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A leather tensile deformation testing device, characterized in that, The system includes a main support plate, a secondary support plate slidably mounted on the main support plate, two clamps respectively mounted on the main support plate and the secondary support plate, and a drive mechanism for reciprocating adjustment of the secondary support plate. During reciprocating adjustment, the clamps mounted on the secondary support plate move synchronously. The drive mechanism includes a linkage rod, a return assembly, and an adjustment assembly. The return assembly and the adjustment assembly are respectively located on both sides of the linkage rod. The adjustment assembly pushes the secondary support plate away from the main support plate via the linkage rod. After the adjustment assembly releases the linkage rod, the return assembly pushes the secondary support plate back to its original position via the linkage rod. The adjustment assembly includes a rotating shaft, a drive head mounted on the upper end of the rotating shaft, and a drive motor directly or indirectly connected to the rotating shaft. The drive head is used to push the secondary support plate away from the main support plate, and the drive head can be freely installed and removed from the rotating shaft.
2. The leather tensile deformation testing device according to claim 1, characterized in that, The main support plate has an adjustment groove on one side, and the upper surface of the main support plate and the bottom of the adjustment groove 11 are stepped. The secondary support plate is set in the adjustment groove of the main support plate, and the upper surfaces of the main support plate and the secondary support plate are flush.
3. The leather tensile deformation testing device according to claim 2, characterized in that, The main support plate is further provided with an adjustment hole at the bottom of the adjustment groove 11. The adjustment hole is elongated and its elongated direction is consistent with the adjustment direction of the auxiliary support plate. The linkage rod is cylindrical in shape, and one end of the linkage rod passes through the adjustment hole and is installed on the auxiliary support plate.
4. The leather tensile deformation testing device according to claim 2, characterized in that, It also includes a guide rail, which is installed on the bottom surface of the sub-support plate along the adjustment direction of the sub-support plate. The guide rail is arranged in an inverted T-shape. The main support plate is further provided with a guide groove at the bottom of the adjustment groove. The guide groove is wider inside and narrower outside. During assembly, the guide rail is installed on the guide groove.
5. The leather tensile deformation testing device according to claim 1, characterized in that, The return assembly includes a push rod, a sleeve fitted onto one end of the push rod, and a return spring disposed inside the sleeve, with both ends of the return spring abutting against the sleeve and the push rod, respectively.
6. The leather tensile deformation testing device according to claim 5, characterized in that, The push rod has a mating groove at the end away from the return spring. The groove wall corresponds to the outer peripheral surface of the linkage rod. During assembly, the return spring pushes the push rod outward so that the groove wall of the push rod fits against the outer peripheral surface of the linkage rod.
7. The leather tensile deformation testing device according to claim 1, characterized in that, The adjustment assembly also includes a bushing, the rotating shaft passes through the bushing, the drive head is mounted on the upper end of the rotating shaft, and the drive head includes a main body and a protrusion connected to the outer peripheral surface of the main body.
8. The leather tensile deformation testing device according to claim 7, characterized in that, The outer peripheral surface of the protrusion is spherical, and the main body is cylindrical in shape.
9. The leather tensile deformation testing device according to claim 7, characterized in that, The rotating shaft has a locking head at one end near the drive head, and the outer periphery of the locking head has a planar locking surface; the bottom center of the main body has an installation groove, the shape of which corresponds to the locking head, and the groove wall of the installation groove has a limiting surface; during assembly, the drive head is installed on the locking head, the locking head is inserted into the installation groove, and the limiting surface and the locking surface are in contact.
10. The leather tensile deformation testing device according to claim 1, characterized in that, The fixture includes several columns, a crossbeam mounted on the columns, a pressure plate located below the crossbeam, an adjusting screw mounted on the crossbeam and extending into the pressure plate, and a positioning pin mounted on the pressure plate and cooperating with the adjusting screw. The columns pass through the pressure plate, and the pressure plate can slide and adjust along the column direction. The crossbeam has a screw hole that penetrates the crossbeam vertically, and the hole wall has an internal thread. The adjusting screw is mounted on the screw hole through an external thread. The lower end of the adjusting screw has a positioning groove on its outer peripheral surface. During assembly, the lower end of the adjusting screw extends vertically into the pressure plate, and the positioning pin is mounted horizontally on the pressure plate, extending into the positioning groove of the adjusting screw.