Leather leveller

Abstract

The utility model provides a kind of leather leveling machine, including workbench, mounting bracket, grinding assembly and fixed component, the top of workbench is symmetrically equipped with guide rail, slidingly equipped with crosspiece on guide rail, vertical and slidingly are equipped with mounting strip on the four corners of crosspiece, the rotation is equipped with compression roller between oppositely arranged two mounting strips, one end of mounting strip away from compression roller is erected with connecting frame, mounting bracket is set in the top of crosspiece, the top of mounting bracket is fixed with linear drive mechanism, the output of linear drive mechanism vertically passes through mounting bracket after being fixed with connecting frame, grinding assembly is set in the bottom of crosspiece and between two compression rollers, fixed component is set in one end of workbench, fixed component is used to fix the end of leather placed on workbench, it solves the problem of existing in prior art when leveling leather, due to the warping of leather, resulting in the quality reduction of leather after being excessively ground.

Description

Technical Field

[0001] This utility model relates to the field of leather leveling technology, and in particular to a leather leveling machine. Background Technology

[0002] Leather, as a core material in sofa manufacturing, possesses natural textures and durable properties, giving sofas a sense of visual sophistication and tactile comfort, making it a top choice for high-end home furnishings. However, raw leather often suffers from wrinkles, unevenness, and inconsistent thickness. If not effectively smoothed, this can lead to material waste due to dimensional deviations during cutting, crooked stitches affecting aesthetics after sewing, uneven coating causing color differences during finishing, and even deformation and collapse of the sofa during use due to uneven internal stress, shortening the product's lifespan. Therefore, smoothing is a crucial pre-treatment step in leather processing.

[0003] During leather leveling, the leather is typically laid flat on a workbench, and a grinding device is used to target and smooth out any protruding areas. However, due to the characteristics of leather, irregular deformations such as localized warping and bulging often occur, making it difficult to precisely control the amount of grinding and easily leading to over-grinding. This over-grinding directly cuts the leather fiber bundles, causing damage to the fiber structure and ultimately significantly reducing the leather's tensile strength and abrasion resistance, affecting the quality and lifespan of the finished product. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a leather leveling machine, which solves the problem that the quality of leather is reduced due to excessive grinding caused by the warping of the leather during the leveling process.

[0005] According to an embodiment of the present invention, a leather smoothing machine includes a worktable, a mounting frame, a smoothing component, and a fixing component. The top of the worktable is symmetrically provided with guide rails, and a horizontal plate is slidably provided on the guide rails. Mounting strips are vertically and slidably passed through the four corners of the horizontal plate. Pressure rollers are rotatably provided between two opposing mounting strips. A connecting frame is mounted on the end of the mounting strip away from the pressure roller. The mounting frame is located on the top of the horizontal plate, and a linear drive mechanism is fixedly provided on the top of the mounting frame. The output end of the linear drive mechanism passes vertically downward through the mounting frame and is fixed to the connecting frame. The smoothing component is located at the bottom of the horizontal plate and between the two pressure rollers. The smoothing component is used to smooth the leather on the worktable. The fixing component is located at one end of the worktable and is used to fix the end of the leather placed on the worktable.

[0006] Compared with the prior art, this utility model has the following beneficial effects: by fixing the leather with a fixing component at one end of the top of the workbench, and setting a grinding component on a horizontal plate that can move along the guide rail to grind the leather, and setting pressure rollers on both sides of the grinding component to pre-press the leather to be ground, the bottom of the leather is in close contact with the top of the workbench when the grinding component grinds the leather, without warping, actively stretching the leather, eliminating local warping, bulges and other hidden deformations, and allowing the leather to enter a "stress equilibrium" state in advance. The uniform pressure of the pressure rollers can disperse the stress concentration points inside the leather, avoiding phenomena such as "edge curling" and "middle collapse" caused by uneven local force during grinding, thus solving the defects such as over-grinding and fiber damage when grinding leather, and ensuring that the quality of the ground leather meets the requirements.

[0007] Furthermore, the grinding assembly includes: a linear motor, a mounting groove is provided at the bottom of the horizontal plate, the linear motor is set in the mounting groove, a mounting plate is fixed on the mover of the linear motor, and a grinding plate is installed at the bottom of the mounting plate.

[0008] Furthermore, the linear motor is vertically slidably installed in the mounting slot, and a connecting column is fixedly installed on the top of the linear motor. The connecting column is vertically inserted through the horizontal plate and slidably connected to the horizontal plate. The end of the connecting column away from the linear motor is fixedly connected to the connecting frame.

[0009] Furthermore, each pair of oppositely arranged mounting strips has a groove on its opposite side, and a slider is slidably arranged in each groove. The two ends of the pressure roller are rotatably connected to the two oppositely arranged sliders, and a first spring is provided between each slider and the top wall of the groove.

[0010] Furthermore, the fixing components include: a vertical plate and a horizontal plate. One end of the vertical plate is fixed to the worktable, and the other end of the vertical plate is fixed to the bottom of the horizontal plate. A pull rod is vertically and slidably inserted through the horizontal plate. After the pull rod passes under the horizontal plate, a pressure plate is fixedly installed. A driving component is provided on the horizontal plate to drive the pressure plate to press against the worktable.

[0011] Furthermore, the driving component is a second spring. The second spring is fixedly installed on the top of both ends of the pressure plate. The bottom of the horizontal plate has grooves at both ends. A sliding plate is slidably installed in the groove. The end of the second spring away from the pressure plate is fixed to the sliding plate. An adjustment component for adjusting the position of the sliding plate in the groove is also provided on the horizontal plate.

[0012] Furthermore, the adjustment assembly includes: an adjustment screw, with the adjustment screw provided at both ends of the horizontal plate, each adjustment screw being threadedly connected to the horizontal plate, and one end of each adjustment screw being inserted into a groove and rotatably connected to the sliding plate.

[0013] Furthermore, the bottom of the pressure plate is provided with several protrusions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0015] Figure 2 This is a side view of an embodiment of the present utility model.

[0016] Figure 3 This is a front view of an embodiment of the present utility model.

[0017] Figure 4 This is a schematic diagram of the linear motor installation according to an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the installation of the first spring in an embodiment of the present invention.

[0019] Figure 6 This is a schematic diagram of the installation of the second spring in an embodiment of the present invention.

[0020] In the above attached figures: 1. Worktable; 2. Guide rail; 3. Horizontal plate; 4. Mounting strip; 5. Pressure roller; 6. Connecting frame; 7. Mounting frame; 8. Linear drive mechanism; 9. Linear motor; 10. Frosted plate; 11. Connecting column; 12. Slider; 13. First spring; 14. Vertical plate; 15. Horizontal plate; 16. Pull rod; 17. Pressure plate; 18. Second spring; 19. Slide plate; 20. Adjusting screw; 21. Protrusion. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 4As shown in the figure, this utility model embodiment proposes a leather smoothing machine, including a worktable 1, a mounting frame 7, a smoothing component, and a fixing component. The top of the worktable 1 is symmetrically provided with guide rails 2, and a horizontal plate 3 is slidably provided on the guide rails 2. Mounting strips 4 are vertically and slidably passed through the four corners of the horizontal plate 3. Pressure rollers 5 are rotatably provided between two oppositely arranged mounting strips 4. A connecting frame 6 is mounted on the end of the mounting strip 4 away from the pressure roller 5. The mounting frame 7 is located on the top of the horizontal plate 3, and a linear drive mechanism 8 is fixedly provided on the top of the mounting frame 7. The output end of the linear drive mechanism 8 passes vertically downward through the mounting frame 7 and is fixed to the connecting frame 6. The smoothing component is located at the bottom of the horizontal plate 3 and between the two pressure rollers 5. The smoothing component is used to smooth the leather on the worktable 1. The fixing component is located at one end of the worktable 1 and is used to fix the end of the leather placed on the worktable 1. The connecting frame 6 is positioned above the horizontal plate 3, and its bottom is fixedly connected to each mounting strip 4. The four mounting strips 4 are arranged in pairs facing each other, and two pressure rollers 5 are installed on them. The smoothing component is positioned between the two pressure rollers 5. The mounting frame 7 is concave in shape, and the linear drive mechanism 8 at the top of the mounting frame 7 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. Its function is to push the connecting frame 6 to move vertically when leveling leather of different thicknesses.

[0023] In use, the leather to be leveled is placed on top of the workbench 1, and one end of the leather is fixed by a fixing component to prevent it from moving during leveling. During leveling, the linear drive mechanism 8 pushes the connecting frame 6 to a predetermined horizontal height, allowing the pressure rollers 5 on the mounting strip 4 to apply pressure to the leather. The horizontal plate 3 slides on the guide rail 2. To achieve automation, a drive mechanism can be installed on the guide rail 2 to drive the horizontal plate 3 along the guide rail 2. The drive mechanism can be a combination of a motor, lead screw, and threaded seat, or a motor and gear plate drive; these are all existing technologies and will not be elaborated here. As the horizontal plate 3 slides along the length of the guide rail 2, the two pressure rollers 5 roll on top of the leather, smoothing it. At this time, the grinding component flattens the smoothed area of ​​the leather, smoothing out defects such as the original protrusions 21 on the leather surface. As the horizontal plate 3 moves on the guide rail 2, the two pressure rollers 5 smooth the entire leather in sequence, while the grinding component also smooths out all the protrusions on the leather. By pre-pressing both sides of the leather with pressure roller 5 before leveling, the natural curling of the leather is avoided. At the same time, the uniform pressure of pressure roller 5 releases the internal stress of the leather in advance, reduces stress rebound during grinding, reduces the risk of secondary deformation, and also effectively avoids the phenomenon of excessive grinding.

[0024] like Figure 4As shown, the further part of the smoothing assembly includes: a linear motor 9; a mounting groove is provided at the bottom of the horizontal plate 3; the linear motor 9 is disposed in the mounting groove; a mounting plate is fixedly mounted on the mover of the linear motor 9; and a frosting plate 10 is mounted on the bottom of the mounting plate. The linear motor 9 is arranged along the length direction of the horizontal plate 3. When the linear motor 9 is working, its mover moves along the length direction of the linear motor 9, which drives the frosting plate 10 to move horizontally. When the horizontal plate 3 moves on the guide rail 2, it drives the linear motor 9 at the bottom of the horizontal plate 3 to move along the length direction of the worktable 1, thereby allowing the frosting plate 10 to smooth the protrusions on the top of the entire leather in sequence.

[0025] like Figure 3 and Figure 4 As shown, the linear motor 9 is further vertically slidably disposed within the mounting groove. A connecting post 11 is fixedly disposed on the top of the linear motor 9. The connecting post 11 is vertically inserted through the horizontal plate 3 and slidably connected to the horizontal plate 3. The end of the connecting post 11 away from the linear motor 9 is fixedly connected to the connecting frame 6. In this embodiment, two connecting posts 11 are fixedly disposed at the bottom of the connecting frame 6. Each connecting post 11 is vertically inserted into the mounting groove and fixedly connected to the linear motor 9. By sliding the linear motor 9 through the mounting groove and connecting it to the connecting frame 6 through the connecting post 11, the horizontal height of the frosted plate 10 on the linear motor 9 changes when the linear drive mechanism 8 drives the connecting frame 6 to move in the vertical direction, thereby adapting to leathers of different thicknesses.

[0026] In this embodiment, a recess is provided at the top of the workbench 1 away from the fixed component, which makes it easier for the operator to replace the frosting plate 10.

[0027] like Figure 5 As shown, furthermore, each pair of oppositely arranged mounting strips 4 has a sliding groove on its opposite sides, and a slider 12 is slidably arranged in each groove. The two ends of the pressure roller 5 are rotatably connected to the two oppositely arranged sliders 12, and a first spring 13 is provided between each slider 12 and the top wall of the groove. In this embodiment, each pressure roller 5 has a slider 12 at both ends, and the pressure roller 5 is rotatably arranged between the two sliders 12 through a bearing. One end of the first spring 13 is fixed to the top of the slider 12, and the other end of the first spring 13 is fixed to the top wall of the groove. Through the elastic action of the first spring 13, when the pressure roller 5 presses on the leather, while ensuring that the leather is smoothed, the pressure roller 5 will move upward a small distance when passing through the protruding parts of the leather, so as not to generate rigid pressure friction with the leather. This ensures that the pressure roller 5 will not move the leather and avoids the pressure roller 5 from scratching the leather.

[0028] like Figure 1 and Figure 6As shown, the fixing assembly further includes a vertical plate 14 and a horizontal plate 15. One end of the vertical plate 14 is fixed to the worktable 1, and the other end of the vertical plate 14 is fixed to the bottom of the horizontal plate 15. A pull rod 16 is vertically and slidably inserted through the horizontal plate 15. After the pull rod 16 passes under the horizontal plate 15, a pressure plate 17 is fixedly installed. A driving component is provided on the horizontal plate 15 to drive the pressure plate 17 to press against the worktable 1. The vertical plate and the horizontal plate 15 are integrally formed. After the leather is placed on the worktable 1, the pull rod 16 is pulled upward, leaving a gap between the pressure plate 17 and the top of the worktable 1 for the leather to enter. Then the pull rod 16 is released, and the pressure plate 17, pushed by the driving component, presses the leather firmly against the worktable 1 to prevent it from moving arbitrarily.

[0029] like Figure 6 As shown, further, the driving component is a second spring 18. The second spring 18 is fixedly installed at the top of both ends of the pressure plate 17. Grooves are formed at both ends of the bottom of the horizontal plate 15, and a sliding plate 19 is slidably disposed within the grooves. The end of the second spring 18 facing away from the pressure plate 17 is fixed to the sliding plate 19. An adjustment assembly for adjusting the position of the sliding plate 19 within the groove is also provided on the horizontal plate 15. The pressure plate 17 moves towards the top of the worktable 1 under the push of the second spring 18. When fixing the leather, the pull rod 16 is pulled to overcome the elastic force of the second spring 18, causing the pressure plate 17 to move upwards, creating a gap between it and the top of the worktable 1. After the leather is placed into the gap, the pull rod 16 is released, and the pressure plate 17 presses the leather firmly onto the worktable 1 under the elastic force of the spring. For leather of different thicknesses and when different clamping forces are required, the relative distance between the sliding plate 19 and the top of the worktable 1 can be adjusted using the adjustment assembly. Preferably, the second spring 18 is a spring with a high elastic coefficient.

[0030] like Figure 6 As shown, the adjustment assembly further includes: an adjustment screw 20, with the adjustment screw 20 provided at both ends of the horizontal plate 15. Each adjustment screw 20 is threadedly connected to the horizontal plate 15, and one end of each adjustment screw 20 is inserted into a groove and rotatably connected to the slide plate 19. In this embodiment, the slide plate 19 and the adjustment screw 20 are rotatably connected by a bearing, so that the slide plate 19 and the adjustment screw 20 can rotate relative to each other without separating from the adjustment screw 20. When it is necessary to adjust the clamping force of the pressure plate 17, the adjustment screw 20 is rotated, causing the end of the adjustment screw 20 near the slide plate 19 to screw in or out of the groove, thereby changing the distance between the slide plate 19 and the top of the worktable 1, and thus changing the clamping force of the pressure plate 17 when pressing the leather onto the worktable 1.

[0031] like Figure 6As shown, furthermore, the bottom of the pressure plate 17 is provided with several protrusions 21. The surface of the leather is relatively rough, and by pressing the protrusions 21 against the surface of the leather, the friction between the two is increased, thereby achieving a better fixing effect on the leather and restricting the displacement of the leather.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A leather leveling machine, characterized in that, include: A workbench (1) is provided with guide rails (2) symmetrically arranged on the top of the workbench (1). A horizontal plate (3) is slidably arranged on the guide rails (2). Mounting strips (4) are vertically and slidably arranged on the four corners of the horizontal plate (3). A pressure roller (5) is rotatably arranged between two opposite mounting strips (4). A connecting frame (6) is mounted on the end of the mounting strip (4) away from the pressure roller (5). Mounting bracket (7) is set on the top of the horizontal plate (3). A linear drive mechanism (8) is fixedly provided on the top of the mounting bracket (7). The output end of the linear drive mechanism (8) passes vertically downward through the mounting bracket (7) and is fixed to the connecting bracket (6). The smoothing assembly is located at the bottom of the horizontal plate (3) and between the two pressure rollers (5). The smoothing assembly is used to smooth the leather on the worktable (1). A fixing component is provided at one end of the workbench (1) and is used to fix the end of the leather placed on the workbench (1).

2. The leather leveling machine as described in claim 1, characterized in that, The grinding assembly includes: a linear motor (9), a mounting groove is provided at the bottom of the horizontal plate (3), the linear motor (9) is set in the mounting groove, a mounting plate is fixed on the mover of the linear motor (9), and a grinding plate (10) is installed at the bottom of the mounting plate.

3. A leather leveling machine as described in claim 2, characterized in that: The linear motor (9) is vertically slidably installed in the mounting slot. A connecting column (11) is fixedly installed on the top of the linear motor (9). The connecting column (11) is vertically installed on the horizontal plate (3) and slidably connected to the horizontal plate (3). The end of the connecting column (11) away from the linear motor (9) is fixedly connected to the connecting frame (6).

4. A leather leveling machine as described in claim 1, characterized in that: Each pair of opposite mounting strips (4) has a groove on its opposite side, and a slider (12) is slidably provided in each groove. The two ends of the pressure roller (5) are rotatably connected to the two opposite sliders (12), and a first spring (13) is provided between each slider (12) and the top wall of the groove.

5. A leather leveling machine as described in claim 1, characterized in that, The fixing components include a vertical plate (14) and a horizontal plate (15). One end of the vertical plate (14) is fixed to the worktable (1), and the other end of the vertical plate (14) is fixed to the bottom of the horizontal plate (15). A pull rod (16) is vertically and slidably passed through the horizontal plate (15). After the pull rod (16) passes through the bottom of the horizontal plate (15), a pressure plate (17) is fixed thereon. A driving component is provided on the horizontal plate (15) to drive the pressure plate (17) to press against the worktable (1).

6. A leather leveling machine as described in claim 5, characterized in that: The driving component is a second spring (18). The top of both ends of the pressure plate (17) is fixedly provided with the second spring (18). The bottom ends of the horizontal plate (15) are provided with grooves. The sliding plate (19) is slidably provided in the grooves. The end of the second spring (18) away from the pressure plate (17) is fixed to the sliding plate (19). The horizontal plate (15) is also provided with an adjustment component for adjusting the position of the sliding plate (19) in the groove.

7. A leather leveling machine as described in claim 6, characterized in that, The adjustment assembly includes: an adjustment screw (20), both ends of the horizontal plate (15) are provided with the adjustment screw (20), each adjustment screw (20) is threadedly connected to the horizontal plate (15), and one end of each adjustment screw (20) is inserted into the groove and rotatably connected to the slide plate (19).

8. A leather leveling machine as described in claim 5, characterized in that: The bottom of the pressure plate (17) is provided with several protrusions (21).

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