Automatic leather paving and cutting device for automobile

Abstract

The utility model relates to automatic production instrument technical field, concretely is a kind of automatic flat laying and cutting equipment for automobile leather, including feeding frame, receiving frame, detection component, rack, leather pressing component, leather pulling frame and leather pulling component.The utility model realizes the automatic flat laying and cutting of cloth by setting up feeding component, leather pulling component, leather pressing component and cutting component, by having gap between rack and feeding frame, receiving frame and detection component are set between feeding frame and rack, so that cloth can naturally droop at right end before flat laying and cutting, effectively prevent the deformation of cloth due to too tight when leather flat laying, in turn, the cutting precision is reduced due to the rebound of cut cloth.

Description

Technical Field

[0001] This utility model relates to the field of automated production equipment technology, specifically to an automatic flat-laying and cutting device for automotive leather. Background Technology

[0002] In the automotive interior manufacturing industry, automated leather flat-lay cutting equipment has become an important tool for achieving high-efficiency production. This type of equipment typically uses a vision positioning system to identify the leather outline, employs a mechanical flattening mechanism to unfold the leather, and finally, a cutting unit completes the automated cutting. Currently, mainstream equipment structures include continuous cutting systems based on conveyor belts, fixed flat-lay cutting machines with vacuum adsorption capabilities, and CNC cutting platforms using multi-axis linkage cutters. The core objective is to replace traditional manual operations with automation, improving material utilization and cutting efficiency while reducing labor intensity.

[0003] For example, a car leather cutting device with patent number CN109777899A uses a conveying assembly to transport one end of the leather material wound on a storage shaft to a cutting blade holder. A leather dragging device moves the leather material on the cutting blade holder along the length of the base for another stroke. The laser cutting head on the laser cutting device cuts the leather located on the cutting blade holder. This allows for continuous, seamless production without machine downtime, achieving industrial production goals, reducing labor intensity, and improving production efficiency. However, most existing automatic cutting devices still have certain technical limitations when dealing with car leather materials, which have significant elasticity. Such devices typically focus on the flattening and cutting actions, neglecting the influence of the material's physical properties on the final formed size. Because leather itself has a certain degree of extensibility and resilience, although it is stretched and flattened during mechanical flattening, after cutting is completed and the external force is removed, the material will shrink due to the release of internal stress, resulting in the actual size of the cut piece being smaller than the preset size. This phenomenon can lead to mismatches during the assembly stage of parts in mass production, which not only increases the difficulty of subsequent stitching or bonding processes, but may also affect the appearance quality and overall consistency of automotive interior parts.

[0004] Therefore, an automatic flat-laying and cutting device for automotive leather is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic flat-laying and cutting device for automotive leather, in order to solve the problem that existing leather cutting devices often ignore the elasticity of the leather itself when flat-laying and cutting leather, resulting in the actual size of the cut leather being smaller than the preset size.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automatic flat-laying and cutting device for automotive leather, used to flatten and cut leather rolls, includes a feeding frame, a receiving frame, a detection component, a frame, a pressing component, a stretching frame, and a stretching component. The receiving frame is located at the upper left end of the feeding frame, and the frame is located at the left end of the feeding frame. A feeding component is located on the right side of the feeding frame. The feeding component is used to clamp the leather roll and feed the fabric onto the frame through the receiving frame. The detection component is located at the right end of the frame and is used to detect and control the conveying speed of the fabric. The stretching frame is slidably connected to the frame. The stretching component is located on the stretching frame and is used to stretch the fabric to the left and then release it. The pressing component is located at the upper left end of the frame and is used to press the fabric firmly after the stretching component has stretched it flat.

[0007] Preferably, the feeding component includes clamping rods, clamping frame, lifting frame and conveyor belt. The lifting frame is fixed to the right end of the feeding frame. The clamping frame is slidably connected to the lifting frame. Two sets of clamping rods are provided. The two sets of clamping rods are slidably connected to the clamping frame. The conveyor belt is located at the upper end of the feeding frame.

[0008] In the above scheme, the conveyor belt is driven by a motor and is used to transfer the fabric to the frame.

[0009] Preferably, the lower right end of the receiving frame is rotatably connected to the upper left end of the feeding frame. The receiving frame is also provided with a receiving plate, and the upper end of the receiving plate is provided with a lower pressure roller and a bonding roller. The lower pressure roller cooperates with the fabric, and the bonding roller cooperates with the machine frame.

[0010] In the above scheme, the purpose of the receiving plate design is to receive the fabric delivered by the conveyor belt when it first transports the fabric to the right end of the frame, so that the fabric will not fall into the gap between the conveyor belt and the frame.

[0011] Preferably, the detection component includes an acceleration sensor, a constant speed sensor, and a deceleration sensor, which are arranged sequentially from top to bottom on the right end of the frame, and cooperate with the conveyor belt.

[0012] Preferably, the leather stretching component includes a leather stretching clamp and a leather stretching device. The leather stretching clamp is disposed on the leather stretching frame, and the leather stretching device is connected to the frame to drive the leather stretching frame to move on the frame.

[0013] In the above scheme, the leather clamp can work with the leather stretching frame to clamp the fabric, so that when the leather stretching equipment moves the leather stretching frame to the left, it will pull the fabric to the left and flatten it.

[0014] Preferably, the pressing component includes a pressing table and a pressing plate. The pressing table is located at the upper right end of the frame, and the pressing plate is connected to the pressing table. The lower end of the pressing plate engages with the fabric.

[0015] In the above scheme, after the leather stretching equipment drives the leather stretching frame to move to the left and lays the fabric flat, the leather pressing plate moves downward, so that the leather pressing plate works with the frame to clamp and fix the fabric.

[0016] Preferably, the fabric stretching frame is further provided with a cutting component for cutting the fabric. The cutting component includes a cutting guide rail and a cutting wheel. The cutting guide rail is fixedly connected to the fabric stretching frame, and the cutting wheel is rotatably connected to the cutting guide rail.

[0017] In the above scheme, after the fabric is laid flat, the pressing plate fixes the flat fabric, the pulling clamp lifts up to release the clamp on the left end of the fabric, and then the pulling equipment drives the pulling frame to move to the right to reset. After the pulling frame is fully reset, the cutting wheel starts to work and cuts the fabric along the cutting guide rail and then resets.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: Automatic fabric laying and cutting are achieved by setting up feeding components, stretching components, pressing components, and cutting components. By leaving a gap between the machine frame and the feeding frame, and setting a receiving frame and detection components between the feeding frame and the machine frame, the right end of the fabric can hang down naturally before laying and cutting. This effectively prevents the fabric from deforming due to excessive tension during stretching and laying, which would cause the cut fabric to spring back and reduce cutting accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the feeding component structure of this utility model; Figure 3 This is a schematic diagram of the support frame structure of this utility model; Figure 4 This is a schematic diagram of the receiving plate position structure of this utility model; Figure 5 This is a schematic diagram of the leather frame structure of this utility model; Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a cross-sectional structural diagram of the pressing component of this utility model.

[0020] In the diagram: 1. Leather roll; 2. Feeding rack; 3. Receiving rack; 4. Machine frame; 5. Pressing component; 6. Stretching rack; 7. Stretching component; 8. Feeding component; 81. Clamping rod; 82. Clamping rack; 83. Lifting frame; 84. Conveyor belt; 31. Receiving plate; 32. Lower pressure roller; 33. Bonding roller; 71. Stretching clamp; 72. Stretching equipment; 51. Pressing table; 52. Pressing plate; 61. Cutting guide rail; 62. Cutting wheel. Detailed Implementation

[0021] To ensure a clear and complete description of the technical solutions in the embodiments of this utility model, and to make the features and advantages more apparent and understandable, the specific implementation methods of this utility model are described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0022] Please see Figures 1 to 7 This utility model provides an automatic flat-laying and cutting device for automotive leather, used to flatten and cut leather rolls 1. It includes a feeding frame 2, a receiving frame 3, a detection component, a frame 4, a pressing component 5, a stretching frame 6, and a stretching component 7. The receiving frame 3 is located at the upper left end of the feeding frame 2, and the frame 4 is located at the left end of the feeding frame 2. A feeding component 8 is located on the right side of the feeding frame 2. The feeding component 8 is used to clamp the leather roll 1 and convey the leather to the frame 4 through the receiving frame 3. The detection component is located at the right end of the frame 4 and is used to detect and control the conveying speed of the fabric. The stretching frame 6 is slidably connected to the frame 4. The stretching component 7 is located on the stretching frame 6 and is used to stretch the fabric to the left and then release it. The pressing component 5 is located at the upper left end of the frame 4 and is used to press the fabric after the stretching component 7 has stretched the fabric flat.

[0023] Please see Figures 2 to 4 The feeding component 8 includes clamping rods 81, clamping frame 82, lifting frame 83, and conveyor belt 84. The lifting frame 83 is fixed to the right end of the feeding frame 2. The clamping frame 82 is slidably connected to the lifting frame 83. Two sets of clamping rods 81 are provided, and the two sets of clamping rods 81 are slidably connected to the clamping frame 82. The conveyor belt 84 is located at the upper end of the feeding frame 2. The conveyor belt 84 is driven by a motor and is used to transfer the fabric to the frame 4.

[0024] Please see Figure 2Specifically, the clamping rod 81 is slidably connected to the clamping frame 82. By adjusting the positions of the two clamping rods 81, the clamping rods 81 can clamp both ends of the leather roll 1, fixing the leather roll 1 to the clamping rods 81 and allowing it to rotate relative to the clamping rods 81. The position of the clamping rods 81 can be manually adjusted and then fixed to the clamping frame 82 with bolts, or it can be automatically clamped by using a lead screw on the clamping frame 82 in conjunction with a drive motor, allowing the clamping rods 81 to move under the control of the drive motor. The clamping rods 81 are connected to the lifting frame 83 through the clamping frame 82. By changing the position of the clamping frame 82, the height of the leather roll 1 relative to the ground on the clamping rods 81 can be adjusted. A telescopic hydraulic cylinder is provided at the right end of the feeding frame 2. The telescopic shaft of the telescopic hydraulic cylinder is fixedly connected to the upper end of the clamping frame 82. When it is necessary to change the height of the lifting frame 83, it is only necessary to control the extension length of the telescopic hydraulic cylinder shaft.

[0025] Please see Figures 3 to 4 Specifically, the lower right end of the receiving frame 3 is rotatably connected to the upper left end of the feeding frame 2. The receiving frame 3 is also equipped with a receiving plate 31, and a lower pressure roller 32 and a bonding roller 33 are mounted on the upper end of the receiving plate 31. The lower pressure roller 32 engages with the fabric, and the bonding roller 33 engages with the frame 4. The purpose of the receiving plate 31 is to receive the fabric delivered by the conveyor belt 84 when it first transfers it to the right end of the frame 4, preventing it from falling into the gap between the conveyor belt 84 and the frame 4. The engagement of the lower pressure roller 32 with the fabric and the bonding roller 33 with the frame 4 means that after the fabric is successfully transferred to the frame 4, the receiving frame 3 rotates along the connection point of the feeding frame 2, causing the receiving frame 3 to... The receiving plate 31 is rotated downwards, making the receiving frame 3 perpendicular to the ground. As the receiving frame 3 rotates, the lower pressure roller 32 will press the fabric between the feeding frame 2 and the frame 4 downwards. The bonding roller 33 will keep in contact with the fabric on the upper right end of the frame 4, so that the fabric between the conveyor belt 84 and the frame 4 will hang down below the lower pressure roller 32. The fabric inlet at the right end of the frame 4 will be flattened by the bonding roller 33 and then pulled to the left by the leather stretching component 7.

[0026] Specifically, the detection components include an acceleration sensor, a constant speed sensor, and a deceleration sensor. The acceleration sensor, constant speed sensor, and deceleration sensor are arranged sequentially from top to bottom on the right end of the frame 4. The acceleration sensor, constant speed sensor, and deceleration sensor cooperate with the conveyor belt 84. The cooperation here means that when the leather pulling component 7 on the frame 4 pulls the fabric on the frame 4, or when the leather pressing component 5 presses and fixes the fabric on the frame 4, the conveyor belt 84 on the feeding frame 2 works continuously, which will change the length of the fabric droop between the feeding frame 2 and the frame 4. When the fabric length between the feeder 2 and the frame 4 is moderate and the drooping position is normal, the fabric between the feeder 2 and the frame 4 is below the lower pressure roller 32 and not in contact with it. The speed sensor will detect the drooping position of the fabric at this time and control the conveyor belt 84 to maintain a constant speed, so that the leather roll 1 at the right end of the feeder 2 is evenly transported towards the frame 4. When the fabric length between the feeder 2 and the frame 4 is too long, causing the fabric to droop too low under the action of gravity, posing a risk of dragging on the ground, the drooping fabric will trigger the deceleration sensor near the lower side of the frame 4, causing the deceleration sensor to control the conveyor belt 84. Stop, thereby stopping the transmission of fabric from the leather roll 1 to the frame 4, to prevent excessive fabric accumulation between the frame 4 and the feeding rack 2, which would cause it to drag on the ground; when there is too little fabric between the feeding rack 2 and the frame 4, and the overall length of the fabric is too short, resulting in a high drooping position of the fabric, the fabric between the frame 4 and the feeding rack 2 is too tight, and there is a risk of breakage when the leather stretching component 7 pulls the fabric to the left to lay it flat. At this time, the upper end of the fabric between the frame 4 and the feeding rack 2 will come into contact with the lower pressure roller 32, and trigger the acceleration sensor, causing the acceleration sensor to control the conveyor belt 84 to accelerate, thereby accelerating the feeding of the leather roll 1 at the right end of the feeding rack 2 towards the frame 4.

[0027] Specifically, the acceleration sensor can be set on the lower pressure roller 32. When there is too little fabric between the feeding frame 2 and the frame 4, the fabric will hang too high, causing the upper end of the fabric to be in contact with the lower pressure roller 32, thus triggering the acceleration sensor on the lower pressure roller 32. When there is too much fabric between the feeding frame 2 and the frame 4, or when it is normal, the hanging position of the fabric between the feeding frame 2 and the frame 4 will be relatively lower, so that the upper end of the fabric will not be in contact with the lower pressure roller 32, thus not triggering the acceleration sensor.

[0028] Specifically, in this application, the design of the lower pressure roller 32 and the design of the fabric between the feeding table and the frame 4 with a partial drooping shape ensure that the fabric fed into the frame 4 will not be taut or deformed; through the design of the bonding roller 33, the fabric between the frame 4 and the feeding frame 2 can be flattened by the bonding roller 33 when it is pulled onto the frame 4, preventing the fabric from tilting and wrinkling due to drooping.

[0029] Please see Figures 4 to 6The fabric stretching component 7 includes a stretching clamp 71 and a stretching device 72. The stretching clamp 71 is mounted on the stretching frame 6, and the stretching device 72 is connected to the frame 4 to drive the stretching frame 6 to move on the frame 4. The stretching device 72 is a conventional setup that only needs to control the stretching frame 6 to move left and right on the frame 4. The stretching clamp 71 is mounted on the stretching frame 6 and can work with the stretching frame 6 to clamp the fabric, so that when the stretching device 72 drives the stretching frame 6 to move to the left, it pulls the fabric to the left and lays it flat.

[0030] Please see Figure 7 The pressing component 5 includes a pressing table 51 and a pressing plate 52. The pressing table 51 is located at the upper right end of the frame 4. The pressing plate 52 is connected to the pressing table 51. The pressing plate 52 is driven by a hydraulic cylinder to move up and down. The lower end of the pressing plate 52 cooperates with the fabric. The cooperation here means that when the leather stretching equipment 72 drives the leather stretching frame 6 to move to the left and lay the fabric flat, the pressing plate 52 moves downward so that the pressing plate 52 cooperates with the frame 4 to clamp and fix the fabric.

[0031] Please see Figure 6 The fabric stretching frame 6 is also equipped with a cutting component for cutting the fabric. The cutting component includes a cutting guide rail 61 and a cutting wheel 62. The cutting guide rail 61 is fixedly connected to the fabric stretching frame 6, and the cutting wheel 62 is rotatably connected to the cutting guide rail 61. After the fabric is laid flat, the pressing plate 52 fixes the flat fabric, and the stretching clamp 71 lifts up to release the clamp on the left end of the fabric. Then, the stretching device 72 drives the fabric stretching frame 6 to move to the right and reset. After the fabric stretching frame 6 is fully reset, the cutting wheel 62 starts to work and cuts the fabric along the cutting guide rail 61 before resetting.

[0032] Working principle: When fabric needs to be cut, the operator first places the leather roll 1 on the right end of the feeding frame 2, and then the clamping rod 81 clamps both ends of the leather roll 1, allowing the leather roll 1 to rotate relative to the clamping rod 81. After the clamping rod 81 clamps the leather roll 1, the height of the leather roll 1 can be adjusted by adjusting the height of the clamping frame 82. After the leather roll 1 is installed, the fabric of the leather roll 1 is transported to the machine frame 4 by the conveyor belt 84.

[0033] During the process of conveyor belt 84 transporting the fabric to the frame, the receiving plate 31 at the left end of conveyor belt 84 can serve as a receiving plate when the fabric is just conveyed to the frame 4. After the left end of the fabric moves smoothly onto the frame 4, the stretching clamp 71 on the stretching frame 6 clamps the left end of the fabric. Then, the receiving frame 3 drives the receiving plate 31 to rotate, causing the lower pressure roller 32 to press the fabric between the frame 4 and the conveyor belt 84 downward, making it droop. The bonding roller 33 then bonds with the fabric on the frame 4, allowing the fabric to pass through the bonding roller 3... After the fabric in roll 3 is flattened, it is pulled and laid flat. At the same time, the conveyor belt 84 continuously transports the fabric of the leather roll 1 to the left. The detection component detects the degree of fabric sag between the frame 4 and the conveyor belt 84 and adjusts the conveying speed of the conveyor belt 84 in real time to ensure that the fabric sag length between the frame 4 and the conveyor belt 84 is moderate. This prevents the subsequent leather stretching component 7 from pulling the flat fabric and prevents the fabric from rebounding due to elasticity after the leather stretching clamp 71 releases the fabric, thus ensuring the cutting accuracy of the fabric.

[0034] During the fabric stretching and cutting process, the fabric is first clamped by the stretching clamp 71. At this time, the pressing plate 52 is raised so that the fabric can be stretched. Then, the stretching device 72 drives the stretching clamp 71 to pull the fabric to the left and lay it flat until the fabric is stretched to the appropriate length. At this time, the pressing plate 52 falls down to press and fix the fabric at the upper right end of the frame 4. Then, the stretching clamp 71 releases the left end of the fabric, so that the stretching device 72 drives the stretching frame 6 to move to the right and reset. During this process, the fabric will fall naturally under the action of gravity until the stretching frame 6 is completely reset to the right end. The cutting wheel 62 of the cutting component, together with the cutting guide rail 61, cuts the fabric, thus completing the automatic flat cutting of the fabric. This achieves automated production while ensuring the accuracy of the fabric flat cutting. It effectively prevents the fabric from deforming due to tension during the stretching process, which would otherwise result in low precision of the cut fabric. When it is necessary to continue cutting the fabric, simply make the fabric clamp 71 on the fabric clamp 6 clamp the left end of the cut fabric again, and then lift the fabric plate 52 upward to release the fabric. Repeat the above process to achieve continuous flat cutting of the fabric.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution 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 solution of this utility model without departing from the spirit and scope of the technical solution 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. An automatic flat-laying and cutting device for automotive leather, used to flatten and cut leather rolls (1), characterized in that: The device includes a feeding rack (2), a receiving rack (3), a detection component, a frame (4), a pressing component (5), a stretching rack (6), and a stretching component (7). The receiving rack (3) is located at the upper left end of the feeding rack (2), and the frame (4) is located at the left end of the feeding rack (2). A feeding component (8) is located on the right side of the feeding rack (2). The feeding component (8) is used to clamp the leather roll (1) and convey the fabric to the frame (4) through the receiving rack (3). The detection component is located at the right end of the frame (4) and is used to detect and control the conveying speed of the fabric. The stretching rack (6) is slidably connected to the frame (4). The stretching component (7) is located on the stretching rack (6) and is used to stretch the fabric to the left and then release it. The pressing component (5) is located at the upper left end of the frame (4) and is used to press the fabric after the stretching component (7) stretches the fabric.

2. The automatic flat-laying and cutting equipment for automotive leather according to claim 1, characterized in that: The feeding component (8) includes a clamping rod (81), a clamping frame (82), a lifting frame (83), and a conveyor belt (84). The lifting frame (83) is fixed to the right end of the feeding frame (2). The clamping frame (82) is slidably connected to the lifting frame (83) up and down. There are two sets of clamping rods (81). The two sets of clamping rods (81) are slidably connected to the clamping frame (82) back and forth. The conveyor belt (84) is located at the upper end of the feeding frame (2).

3. The automatic flat-laying and cutting equipment for automotive leather according to claim 1, characterized in that: The lower right end of the receiving frame (3) is rotatably connected to the upper left end of the feeding frame (2). The receiving frame (3) is also provided with a receiving plate (31), a lower pressure roller (32) and a bonding roller (33). The lower pressure roller (32) cooperates with the fabric, and the bonding roller (33) cooperates with the frame (4).

4. The automatic flat-laying and cutting equipment for automotive leather according to claim 2, characterized in that: The detection component includes an acceleration sensor, a constant speed sensor, and a deceleration sensor. The acceleration sensor, constant speed sensor, and deceleration sensor are arranged sequentially from top to bottom on the right end of the frame (4). The acceleration sensor, constant speed sensor, and deceleration sensor cooperate with the conveyor belt (84).

5. The automatic flat-laying and cutting equipment for automotive leather according to claim 4, characterized in that: The leather stretching component (7) includes a leather stretching clamp (71) and a leather stretching device (72). The leather stretching clamp (71) is mounted on the leather stretching frame (6), and the leather stretching device (72) is connected to the frame (4) to drive the leather stretching frame (6) to move on the frame (4).

6. The automatic flat-laying and cutting equipment for automotive leather according to claim 5, characterized in that: The pressing component (5) includes a pressing table (51) and a pressing plate (52). The pressing table (51) is located at the upper right end of the frame (4). The pressing plate (52) is connected to the pressing table (51). The lower end of the pressing plate (52) is in contact with the fabric.

7. The automatic flat-laying and cutting equipment for automotive leather according to claim 5, characterized in that: The fabric stretcher (6) is also provided with a cutting component, which is used to cut the fabric. The cutting component includes a cutting guide rail (61) and a cutting wheel (62). The cutting guide rail (61) is fixedly connected to the fabric stretcher (6), and the cutting wheel (62) is rotatably connected to the cutting guide rail (61).

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