Plane leather tightening machine
By employing the coordinated movement of multiple actuators and the uniform clamping and pulling of the fixture on the cowhide inspection equipment, combined with a camera inspection module, the problems of low efficiency and insufficient accuracy of traditional manual leather stretching have been solved, achieving automated and high-precision cowhide defect detection.
Patent Information
- Application Number
- CN202422739862.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Traditional cowhide testing relies on manual operation, which is inefficient, has limited testing accuracy, and can easily generate uneven pressure during manual stretching, resulting in poor testing results.
Multiple actuators are evenly distributed on the frame, and their movement is driven by power and coordinated. They work with clamps to evenly clamp and pull the edges of the leather, and combined with a camera detection module to achieve automated flattening and detection.
It achieves stable and uniform flatness of the cowhide surface, reveals minor flaws, improves the accuracy and efficiency of detection, avoids localized damage, and is adaptable to cowhides of different sizes and shapes.
Smart Images
Figure CN223513158U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of leather testing technology, and in particular to a flat leather stretching machine. Background Technology
[0002] In the field of cowhide processing and quality inspection, cowhide inspection is a crucial step. Traditional cowhide inspection methods typically require manual stretching of the hide to examine its surface for defects. However, this method has significant limitations, namely, reliance on manual operation, low efficiency, and inspection accuracy limited by the operator's experience and skill. Furthermore, uneven pressure can easily be generated during manual stretching, leading to poor inspection results. These factors necessitate improvements to existing cowhide inspection equipment to achieve automation, high precision, and high efficiency. Utility Model Content
[0003] This utility model provides a flat skin stretching machine to solve the problems in the prior art.
[0004] This utility model embodiment adopts the following technical solution: a flat leather stretching machine, comprising: a frame; at least three actuators, evenly distributed on the same plane of the frame; each actuator is slidably connected to the frame and moved by a power drive, with its moving direction pointing towards the center of the actuators; clamps connected to the actuators are used to clamp the edges of the leather to be processed, and the coordinated movement of the actuators stretches the leather flat. Through the coordinated movement of multiple actuators and the uniform clamping and pulling of the leather edges by the connected clamps, the cowhide can be fully stretched flat, improving the accuracy of cowhide defect detection.
[0005] Preferably, the clamp is fixedly connected to the corresponding actuator.
[0006] Preferably, the clamp is detachably connected to the corresponding actuator.
[0007] Preferably, the actuator is configured as a mesh plate, and the clamp has at least one hook for attaching to the mesh at different positions on the actuator. This design can accommodate cowhide of different sizes and shapes and is easy to operate.
[0008] Preferably, the actuators are configured in four pieces, each being a plate-like structure. The four actuators are fitted together to form a rectangular structure, and each actuator moves along the diagonal of the rectangular structure it is in. This uniform distribution of the actuators ensures that the leather is subjected to uniform force when stretched, avoiding localized overstretching or understretching.
[0009] Preferably, each of the actuators is mounted above the frame via at least one slide rail.
[0010] Preferably, each of the actuators is provided with a linear drive source fixedly mounted on the frame on its side, and the drive end of the linear drive source is fixedly connected to the actuator to drive the actuator to move.
[0011] Preferably, the leather stretching machine further includes a camera detection module for detecting defects in the leather.
[0012] Preferably, the camera inspection module includes: a gantry frame, driven by a power source to move laterally on a frame; a carrier plate, disposed between the gantry frame and several actuators, on which several inspection cameras are mounted for detecting defects in the leather; and a height adjustment component, disposed on the gantry frame and used to adjust the height of the carrier plate. This design, with its lateral movement and adjustable vertical height, allows the inspection cameras mounted below to cover different areas of the leather, achieving a more comprehensive inspection of the entire piece of leather.
[0013] Preferably, the gantry is mounted on the frame via an electric synchronous belt module.
[0014] Preferably, the height adjustment assembly includes: two lead screws, both rotatably mounted on the gantry frame via bearing seats, both lead screws passing through and threadedly connected to the carrier plate, with the threads of the two lead screws in the same direction; and a drive structure mounted on the gantry frame to drive the two lead screws to rotate in the same direction, thereby raising and lowering the carrier plate. This allows for appropriate height adjustment of the inspection camera according to different leather materials, ensuring the optimal shooting angle of the inspection camera.
[0015] Preferably, the drive structure includes a rocker arm and two sets of bevel gears. The two lead screws are respectively connected to the rocker arm via the two sets of bevel gears. A handwheel handle is installed at one end of the rocker arm. When the rocker arm rotates, it drives the two lead screws to rotate in the same direction through the transmission of the two sets of bevel gears. The design of the drive structure using a rocker arm and handwheel handle makes the lifting and lowering operation of the carrier plate relatively convenient.
[0016] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:
[0017] Through the coordinated movement of multiple actuators and the uniform clamping and pulling of the leather edges by the connected clamps, the cowhide can be fully stretched flat. Compared to traditional manual stretching methods or situations lacking professional stretching equipment, this mechanically driven stretching method is more stable and reliable, ensuring that the cowhide surface is as flat and smooth as possible. This allows minor flaws that were originally hidden in wrinkles or unstretched states to be clearly revealed, greatly improving the accuracy of cowhide defect detection. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of several actuators of this utility model;
[0021] Figure 3 This is a three-dimensional structural diagram of the frame and several actuators of this utility model;
[0022] Figure 4 This is a three-dimensional structural diagram of the clamp of this utility model;
[0023] Figure 5 This is a three-dimensional structural diagram of the camera detection module of this utility model. Figure 1 ;
[0024] Figure 6 This is a three-dimensional structural diagram of the camera detection module of this utility model. Figure 2 .
[0025] Reference numerals: 1-Frame; 11-Slide rail; 12-Linear drive source; 2-Actuator; 21-Mesh; 3-Clamp; 31-Hook; 4-Camera detection module; 41-Gantry; 42-Carrier plate; 43-Detection camera; 44-Electric synchronous belt module; 45-Lead screw; 46-Bearing housing; 47-Rock arm; 48-Bevel gear set; 49-Handwheel handle. Detailed Implementation
[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0027] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0028] Reference Figures 1 to 6 As shown, this utility model embodiment provides a flat skin stretching machine, which mainly includes a frame 1, at least three actuators 2 and several clamps 3.
[0029] At least three actuators 2 are evenly distributed on the same plane on the frame 1; each actuator 2 is slidably connected to the frame 1 and moved by a power drive. Specifically, each actuator 2 is mounted above the frame 1 via at least one slide rail 11 to achieve a sliding connection between the actuator 2 and the frame 1. A linear drive source 12 is fixedly mounted on the frame 1 on the side of each actuator 2, and the drive end of the linear drive source 12 is fixedly connected to the actuator 2 to drive its movement. In some practical applications, four actuators 2 are configured, all of which are plate-shaped structures, and the four actuators 2 are fitted together to form a rectangular structure (e.g., Figure 2 Each of the actuators 2 moves along the diagonal of the rectangular structure in which it is located.
[0030] The evenly distributed design of the actuators 2 ensures that the leather is stretched evenly, preventing localized overstretching or understretching. The sliding connection guarantees that the actuators 2 can move smoothly in a specific direction under power. The movement direction of each actuator 2 points towards the center of the group, cleverly utilizing a principle similar to centripetal motion. When the actuators 2 move away from each other, they exert an outward pulling force on the leather, thus achieving the purpose of stretching the leather flat.
[0031] Several actuators 2 are connected to clamps 3, which are used to clamp the edges of the leather to be processed. The coordinated movement of these actuators 2 stretches the leather flat. In use, the leather is first laid roughly flat on the actuators 2, and then the clamps 3 clamp the edges of the leather relatively evenly. When the actuators 2 move away from each other under power, the clamps 3 pull the edges of the leather away from each other, thus stretching the leather flat overall. This allows the leather surface to be fully unfolded, facilitating the observation of minor imperfections on the cowhide.
[0032] In summary, through the coordinated movement of multiple actuators 2 and the uniform clamping and pulling of the leather edges by the connected clamps 3, the cowhide can be fully stretched flat. Compared to traditional manual stretching methods or situations lacking professional stretching equipment, this mechanically driven stretching method is more stable and reliable, ensuring that the cowhide surface is as flat and smooth as possible. This allows minor flaws that were originally hidden in wrinkles or unstretched states to be clearly revealed, greatly improving the accuracy of cowhide defect detection.
[0033] Furthermore, the actuators 2 are evenly distributed on the same plane of the frame 1 and their movement direction is designed reasonably, ensuring that the tension on each part of the leather is relatively uniform during the stretching process. This helps prevent damage to the leather due to excessive local stress and ensures that the leather is stretched in a more ideal state, avoiding overstretching in some areas while understretching in others, thus further guaranteeing the consistency and reliability of the testing results.
[0034] In some practical applications, refer to Figures 1 to 3 As shown, the connection between the fixture 3 and the actuator 2 can be in at least two of the following ways.
[0035] Firstly, the clamp 3 is fixedly connected to the corresponding actuator 2.
[0036] Secondly, the clamp 3 is detachably connected to the corresponding actuator 2. Specifically, the actuator 2 is configured as a mesh plate, and the clamp 3 has at least one hook 31 to be hooked into the mesh 21 at different positions on the actuator 2. Therefore, the operator can first use the clamp 3 to clamp the leather, and then hook the clamp 3 into the appropriate position on the mesh plate. Thus, this design can adapt to cowhides of different sizes and shapes, and is simple to operate.
[0037] In other practical applications, refer to Figure 1 , Figure 5 and Figure 6 As shown, the leather stretching machine also includes a camera detection module 4 for detecting defects in the leather.
[0038] Specifically, the camera detection module 4 includes a gantry 41, which is driven by power to move laterally on the frame 1 (in some practical applications, the gantry 41 is mounted on the frame 1 by an electric synchronous belt module 44, which is existing technology and will not be described in detail; an electric or hydraulic slide table can also be used to achieve the lateral movement of the gantry 41); a carrier plate 42 is disposed between the gantry 41 and several actuators 2, and several detection cameras 43 are mounted on the carrier plate 42 for detecting defects in the leather; a height adjustment component is disposed on the gantry 41 and is used to adjust the height of the carrier plate 42.
[0039] In some practical applications, the height adjustment component includes a lead screw 45 and a drive structure.
[0040] Two lead screws 45 are configured, and both are rotatably mounted on the gantry frame 41 via bearing seats 46. Both lead screws 45 pass through the carrier plate 42 and are threadedly connected to it. The thread directions of the two lead screws 45 are the same.
[0041] A drive structure is mounted on the gantry 41 to drive the two lead screws 45 to rotate in the same direction, thereby raising and lowering the carrier plate 42. Specifically, the drive structure includes a rocker arm 47 and two sets of bevel gears 48. The two lead screws 45 are respectively connected to the rocker arm 47 through the two sets of bevel gears 48. A handwheel handle 49 is installed at one end of the rocker arm 47. When the rocker arm 47 rotates, it drives the two lead screws 45 to rotate in the same direction through the two sets of bevel gears 48.
[0042] In this embodiment, the gantry frame 41 is a crucial support structure for the camera inspection module 4, capable of lateral movement on the frame 1 via a power drive. This lateral movement design allows the inspection camera 43 mounted beneath it to cover different areas of the leather, achieving a comprehensive inspection of the entire piece. For example, after the cowhide is stretched flat, the gantry frame 41 can move gradually from one end along the lateral direction of the leather, allowing the inspection camera 43 to sequentially photograph and inspect each part, ensuring that no potentially defective areas are missed. The inspection camera 43 can clearly capture images of the leather surface and, through appropriate image processing algorithms and other technical means, analyze whether defects exist on the leather, as well as the type and size of the defects.
[0043] The height adjustment component is mounted on the gantry 41 and is used to adjust the height of the carrier plate 42. It can appropriately adjust the height of the inspection camera 43 according to different leather materials to ensure the optimal shooting angle of the inspection camera 43.
[0044] Furthermore, the drive structure employs a rocker arm 47 and a handwheel handle 49, making the lifting and lowering operation of the carrier plate 42 relatively convenient. Operators can quickly adjust the height of the carrier plate 42 by manually rotating the handwheel handle 49, based on observations of the leather material and feedback from the inspection camera 43. This manual operation method does not require complex electrical control equipment or specialized operating skills; ordinary workers can master it with simple training, facilitating flexible application in actual leather stretching inspection work.
[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A flat skin stretching machine, characterized in that, include: Rack (1); At least three actuators (2) are evenly distributed on the same plane on the frame (1); each actuator (2) is slidably connected to the frame (1) and moved by power drive, and its moving direction points to the center of the actuators (2); The clamps (3) connected to several actuators (2) are used to clamp the edges of the leather to be processed, and the leather is pulled flat by the coordinated movement of several actuators (2).
2. The planar skin stretching machine according to claim 1, characterized in that, The clamp (3) is fixedly connected to the corresponding actuator (2).
3. A flat skin stretching machine according to claim 1, characterized in that, The clamp (3) is detachably connected to the corresponding actuator (2).
4. A flat skin stretching machine according to claim 3, characterized in that, The actuator (2) is configured as a mesh plate, and the clamp (3) has at least one hook (31) to be attached to the mesh (21) at different positions of the actuator (2).
5. A flat skin stretching machine according to claim 1, characterized in that, The actuator (2) is configured with four plate-shaped structures. The four actuators (2) are fitted together to form a rectangular structure. Each actuator (2) moves along the diagonal of the rectangular structure in which it is located.
6. A flat skin stretching machine according to claim 1, characterized in that, Each of the actuators (2) is mounted above the frame (1) via at least one slide rail (11).
7. A flat skin stretching machine according to claim 1, characterized in that, Each of the actuators (2) is provided with a linear drive source (12) fixedly mounted on the frame (1) on its side. The drive end of the linear drive source (12) is fixedly connected to the actuator (2) to drive the actuator (2) to move.
8. A flat skin stretching machine according to claim 1, characterized in that, The leather stretching machine also includes a camera detection module (4) for detecting defects in the leather.
9. A flat skin stretching machine according to claim 8, characterized in that, The camera detection module (4) includes: The gantry (41) is powered to move laterally on the frame (1); A carrier plate (42) is disposed between the gantry frame (41) and a plurality of the actuators (2), and a plurality of inspection cameras (43) are mounted on the carrier plate (42) for detecting defects in the leather. The height adjustment component is mounted on the gantry (41) and is used to adjust the height of the carrier plate (42).
10. A flat skin stretching machine according to claim 9, characterized in that, The gantry (41) is mounted on the frame (1) via an electric synchronous belt module (44).
11. A flat skin stretching machine according to claim 9, characterized in that, The height adjustment component includes: Two lead screws (45) are configured and are rotatably mounted on the gantry frame (41) via bearing seats (46). Both lead screws (45) pass through the carrier plate (42) and are threadedly connected to it. The threads of the two lead screws (45) are in the same direction. A drive structure is mounted on the gantry (41) to drive the two lead screws (45) to rotate in the same direction, thereby driving the carrier plate (42) to rise and fall.
12. A flat skin stretching machine according to claim 11, characterized in that, The drive structure includes a rocker arm (47) and two sets of bevel gears (48). The two lead screws (45) are respectively connected to the rocker arm (47) through the two sets of bevel gears (48). A handwheel handle (49) is installed at one end of the rocker arm (47). When the rocker arm (47) rotates, it drives the two lead screws (45) to rotate in the same direction through the two sets of bevel gears (48).