Leather cutting tool for sofa production

Abstract

The utility model discloses a leather cutting tool for sofa production, which comprises a fixed frame, a traction assembly is started to pull leather to move rightwards, a cutting mechanism is started to carry out movable cutting work on the leather, and the current moving tension of the leather can be detected through a detection roller according to the stress change of a sensitive element in a shaft penetrating type tension sensor. When adjustment is needed, the driving assembly is started to drive the lifting mechanism to rotate, the limiting sliding block and the adjusting roller are driven to slide in a lifting mode along the inner wall of the limiting sliding groove through threaded connection in the lifting mechanism, the leather is driven to move in a lifting mode through movement of the adjusting roller, and then the moving tension of the leather can be adjusted. The purpose of automatically detecting and adjusting the tension during leather moving and cutting is achieved, the problem that due to the fact that an existing cutting tool is difficult to automatically adjust the tension during leather moving, cutting deviation occurs after the leather tension changes is solved, and the stability of leather cutting machining is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of sofa leather processing technology, and in particular to a leather cutting tool for sofa production. Background Technology

[0002] Sofa leather is the main raw material used to make genuine leather sofas. Many materials are used for the surface of sofas, including genuine leather, PU leather, and PVC shoe upper leather. Genuine leather generally includes cowhide, pigskin, and horsehide. Cowhide is further divided into yellow cowhide and buffalo hide, and classified by its layers as top grain, split, and third grain. Sofa leather is soft, and its thickness varies from 1.2 to 1.4 mm depending on the type.

[0003] During the production and processing of sofa leather, the leather needs to be cut using cutting fixtures according to the production requirements of the sofa. The cutting of leather is usually carried out by moving the leather. However, the existing cutting fixtures are difficult to detect and adjust the tension of the leather during cutting. When the tension of the leather changes, it is easy for wrinkles to appear in the leather, which will cause the cutting to deviate, greatly reducing the stability of leather cutting and processing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a leather cutting fixture for sofa production, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A leather cutting fixture for sofa production includes a fixed frame, a feeding roller rotatably connected to the inner wall of the fixed frame, an auxiliary roller rotatably connected to the inner wall of the fixed frame, a through-shaft tension sensor fixedly connected to the inner wall of the fixed frame, a detection roller rotatably connected to the detection end of the through-shaft tension sensor, a limit groove extending through the inner wall of the fixed frame, a limit slider slidably connected to the inner wall of the limit groove, an adjusting roller rotatably connected to the inner wall of the limit slider, a lifting mechanism provided on the surface of the fixed frame, a driving assembly provided inside the fixed frame, a cutting mechanism provided inside the fixed frame, and a traction assembly provided on the front of the fixed frame.

[0007] Preferably, the lifting mechanism consists of a limiting ring, a threaded rod, and a threaded sleeve. The limiting ring is fixedly connected to the surface of the fixed frame, the threaded rod is rotatably connected to the inner wall of the limiting ring, the inner wall of the threaded sleeve is threadedly connected to the surface of the threaded rod, and the threaded sleeve is fixedly connected to the front of the limiting slider.

[0008] Preferably, the drive assembly consists of a first fixed plate, a first servo motor, a drive wheel, a transmission belt, and a driven wheel. The first fixed plate is fixedly connected to the inner wall of the fixed frame, the first servo motor is fixedly connected to the inner wall of the first fixed plate, the inner wall of the drive wheel is fixedly connected to the output end of the first servo motor, the transmission belt meshes with the inner wall of the drive wheel, and the inner wall of the driven wheel is fixedly connected to the surface of the threaded rod, and the inner wall of the driven wheel meshes with the transmission belt.

[0009] Preferably, the cutting mechanism consists of a second fixed plate, an electric push rod, and a cutting tool. The second fixed plate is fixedly connected to the inner wall of the fixed frame, the electric push rod is fixedly connected to the inner wall of the second fixed plate, and the cutting tool is fixedly connected to the output end of the second electric push rod.

[0010] Preferably, the traction assembly consists of a second servo motor, a traction roller, and a transmission gear. The second servo motor is fixedly connected to the front of the fixed frame, and the output end of the second servo motor is rotatably connected to the inner wall of the fixed frame. The traction roller is rotatably connected to the inner wall of the fixed frame, and the traction roller is fixedly connected to the output end of the second servo motor. The inner wall of the transmission gear is fixedly connected to the surface of the traction roller.

[0011] Preferably, the limiting slider is rectangular and made of metal.

[0012] Preferably, there are multiple transmission gears, and all of the multiple transmission gears mesh with each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This leather cutting fixture for sofa production, when activated, pulls the leather to the right by starting the traction component, and starts the cutting mechanism to perform moving cutting work on the leather. By detecting the force change of the sensitive element inside the through-shaft tension sensor, the current moving tension of the leather can be detected by the detection roller. When adjustment is needed, the drive component is activated to drive the lifting mechanism to rotate. Through the threaded connection inside the lifting mechanism, the limit slider and the adjusting roller are driven to slide up and down along the inner wall of the limit groove. The movement of the adjusting roller drives the leather to move up and down, thereby adjusting the magnitude of the moving tension of the leather. This achieves the goal of automatically detecting and adjusting the tension during the moving cutting of leather, avoiding the problem of cutting deviation caused by the difficulty of automatically adjusting the tension of the leather during the moving cutting work in existing cutting fixtures, which leads to changes in leather tension. This greatly improves the stability of leather cutting and processing. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the structure of this utility model;

[0015] Figure 2 This is an enlarged view of the structure at point A of this utility model;

[0016] Figure 3This is a left sectional view of the structure of this utility model;

[0017] Figure 4 This is an enlarged view of the structure at point B of this utility model;

[0018] Figure 5 This is a right view of the structure of this utility model;

[0019] Figure 6 This is an enlarged view of the structure at point C of this utility model.

[0020] In the diagram: 1. Fixed frame; 2. Feed roller; 3. Auxiliary roller; 4. Through-shaft tension sensor; 5. Detection roller; 6. Limiting groove; 7. Limiting slider; 8. Adjusting roller; 9. Limiting ring; 10. Threaded rod; 11. Threaded sleeve; 12. First fixed plate; 13. First servo motor; 14. Driving wheel; 15. Transmission belt; 16. Driven wheel; 17. Second fixed plate; 18. Electric push rod; 19. Cutting tool; 20. Second servo motor; 21. Traction roller; 22. Transmission gear. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figure 1-6A leather cutting fixture for sofa production includes a fixed frame 1, a feeding roller 2 rotatably connected to the inner wall of the fixed frame 1, an auxiliary roller 3 rotatably connected to the inner wall of the fixed frame 1, a through-shaft tension sensor 4 fixedly connected to the inner wall of the fixed frame 1, a detection roller 5 rotatably connected to the detection end of the through-shaft tension sensor 4, a limit groove 6 extending through the inner wall of the fixed frame 1, a limit slider 7 slidably connected to the inner wall of the limit groove 6, the limit slider 7 being rectangular in shape and made of metal, which provides higher strength, makes it less prone to deformation and damage under stress, and more durable, an adjusting roller 8 rotatably connected to the inner wall of the limit slider 7, and a lifting mechanism provided on the surface of the fixed frame 1, the lifting mechanism consisting of a limit ring 9, a threaded rod 10, and a threaded sleeve 11, the limit ring 9 being fixedly connected to the surface of the fixed frame 1, the threaded rod 10 being rotatably connected to the inner wall of the limit ring 9, and the threaded sleeve 11 being rotatably connected to the inner wall of the limit ring 9. The threaded rod 10 is threaded on the surface, and the threaded sleeve 11 is fixedly connected to the front of the limiting slider 7. It is used to drive the adjusting roller 8 to move up and down, so as to facilitate the tension adjustment of the leather. The fixed frame 1 is equipped with a drive assembly, which consists of a first fixed plate 12, a first servo motor 13, a drive wheel 14, a transmission belt 15, and a driven wheel 16. The first fixed plate 12 is fixedly connected to the inner wall of the fixed frame 1, the first servo motor 13 is fixedly connected to the inner wall of the first fixed plate 12, the inner wall of the drive wheel 14 is fixedly connected to the output end of the first servo motor 13, the transmission belt 15 meshes with the inner wall of the drive wheel 14, and the inner wall of the driven wheel 16 is fixedly connected to the surface of the threaded rod 10. The inner wall of the driven wheel 16 meshes with the transmission belt 15, so as to drive the lifting mechanism to rotate, so as to facilitate the lifting transmission work. The fixed frame 1 is equipped with a cutting mechanism, and the fixed frame 1 is equipped with a traction assembly on the front.

[0023] Specifically, the cutting mechanism consists of a second fixed plate 17, an electric push rod 18, and a cutting tool 19. The second fixed plate 17 is fixedly connected to the inner wall of the fixed frame 1, the electric push rod 18 is fixedly connected to the inner wall of the second fixed plate 17, and the cutting tool 19 is fixedly connected to the output end of the second electric push rod 18, which is used to drive the cutting tool 19 to contact the leather, so as to facilitate the moving cutting work.

[0024] Specifically, the traction assembly consists of a second servo motor 20, a traction roller 21, and transmission gears 22. There are multiple transmission gears 22, and all of them mesh with each other to drive the multiple traction rollers 21 to rotate relative to each other, thereby improving the traction stability of the leather. The second servo motor 20 is fixedly connected to the front of the fixed frame 1, and the output end of the second servo motor 20 is rotatably connected to the inner wall of the fixed frame 1. The traction roller 21 is rotatably connected to the inner wall of the fixed frame 1, and the traction roller 21 is fixedly connected to the output end of the second servo motor 20. The inner wall of the transmission gear 22 is fixedly connected to the surface of the traction roller 21, thereby driving the leather to move to the right and improving the efficiency of cutting and processing.

[0025] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0026] In use: First, the leather to be processed is pulled between multiple feed rollers 2, below the detection roller 5, on the surface of the auxiliary roller 3, and below the adjusting roller 8, and clamped and fixed between multiple traction rollers 21. The second servo motor 20 is started to drive the traction rollers 21 and the transmission gears 22 to rotate. Through the mutual meshing of multiple transmission gears 22, the multiple traction rollers 21 are driven to rotate relative to each other along the inner wall of the fixed frame 1, thus pulling the leather to the right. The electric push rod 18 is started to push the cutting tool 19 to move and contact the leather for moving and cutting. The moving tension of the leather is transmitted to the through-shaft type through the detection roller 5. In the tension sensor 4, the current movement tension of the leather can be detected by the force change of the sensitive element inside the through-shaft tension sensor 4. When adjustment is required, the first servo motor 13 is started to drive the drive wheel 14 and the transmission belt 15 to rotate. Through the meshing of the transmission belt 15 and the driven wheel 16, the threaded rod 10 is driven to rotate along the inner wall of the limiting ring 9. Through the threaded connection between the threaded rod 10 and the threaded sleeve 11, the limiting slider 7 and the adjusting roller 8 are driven to slide up and down along the inner wall of the limiting groove 6. The movement of the adjusting roller 8 drives the leather to move up and down, thereby adjusting the movement tension of the leather.

[0027] In summary, this leather cutting fixture for sofa production, when activated, pulls the leather to the right using a traction assembly, and then activates the cutting mechanism to perform the moving cut. The current tension of the leather is detected by the detection roller 5 based on the force change of the sensitive element inside the through-shaft tension sensor 4. When adjustment is needed, the drive assembly is activated to drive the lifting mechanism to rotate. Through the threaded connection inside the lifting mechanism, the limit slider 7 and the adjusting roller 8 slide up and down along the inner wall of the limit groove 6. The movement of the adjusting roller 8 causes the leather to move up and down, thus adjusting the tension of the leather. This achieves the goal of automatically detecting and adjusting the tension during leather movement and cutting, avoiding the problem of cutting deviation caused by changes in leather tension due to the difficulty of automatically adjusting the tension during leather movement in existing cutting fixtures. This greatly improves the stability of leather cutting and processing, and solves the problems mentioned in the background art.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool for cutting leather for sofa production, comprising a fixing frame (1), characterized in that, The inner wall of the fixed frame (1) is rotatably connected with an inlet roller (2), the inner wall of the fixed frame (1) is rotatably connected with an auxiliary roller (3), the inner wall of the fixed frame (1) is fixedly connected with a through-shaft tension sensor (4), the detection end of the through-shaft tension sensor (4) is rotatably connected with a detection roller (5), a limiting sliding groove (6) is formed in the inner wall of the fixed frame (1), a limiting sliding block (7) is slidably connected in the inner wall of the limiting sliding groove (6), the inner wall of the limiting sliding block (7) is rotatably connected with an adjusting roller (8), a lifting mechanism is arranged on the surface of the fixed frame (1), a driving assembly is arranged in the fixed frame (1), a cutting mechanism is arranged in the fixed frame (1), and a traction assembly is arranged on the front surface of the fixed frame (1).

2. The tool for cutting leather for sofa production according to claim 1, characterized in that, The lifting mechanism is composed of a limiting ring (9), a threaded rod (10) and a threaded sleeve (11), the limiting ring (9) is fixedly connected with the surface of the fixed frame (1), the threaded rod (10) is rotatably connected with the inner wall of the limiting ring (9), the inner wall of the threaded sleeve (11) is threadedly connected with the surface of the threaded rod (10), and the threaded sleeve (11) is fixedly connected with the front surface of the limiting sliding block (7).

3. The tool for cutting leather for sofa production according to claim 1, characterized in that, The driving assembly is composed of a first fixed plate (12), a first servo motor (13), a driving wheel (14), a transmission belt (15) and a driven wheel (16), the first fixed plate (12) is fixedly connected with the inner wall of the fixed frame (1), the first servo motor (13) is fixedly connected with the inner wall of the first fixed plate (12), the inner wall of the driving wheel (14) is fixedly connected with the output end of the first servo motor (13), the transmission belt (15) is engaged with the inner wall of the driving wheel (14), and the inner wall of the driven wheel (16) is fixedly connected with the surface of the threaded rod (10), and the inner wall of the driven wheel (16) is engaged with the transmission belt (15).

4. The tool for cutting leather for sofa production according to claim 1, characterized in that, The cutting mechanism is composed of a second fixed plate (17), an electric push rod (18) and a cutting tool (19), the second fixed plate (17) is fixedly connected with the inner wall of the fixed frame (1), the electric push rod (18) is fixedly connected with the inner wall of the second fixed plate (17), and the cutting tool (19) is fixedly connected with the output end of the second electric push rod (18).

5. The tool for cutting leather for sofa production according to claim 1, characterized in that, The traction assembly is composed of a second servo motor (20), a traction roller (21) and a transmission gear (22), the second servo motor (20) is fixedly connected with the front surface of the fixed frame (1), the output end of the second servo motor (20) is rotatably connected with the inner wall of the fixed frame (1), the traction roller (21) is rotatably connected with the inner wall of the fixed frame (1), the output end of the traction roller (21) is fixedly connected with the output end of the second servo motor (20), and the inner wall of the transmission gear (22) is fixedly connected with the surface of the traction roller (21).

6. The tool for cutting leather for sofa production according to claim 1, characterized in that, The limiting sliding block (7) is rectangular in shape and is made of metal material.

7. The tool for cutting leather for sofa production according to claim 5, characterized in that, The number of transmission gears (22) is multiple, and the multiple transmission gears (22) are engaged with each other.

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