Positioning device of leather laser cutting machine

Abstract

The utility model belongs to the technical field of cutting, particularly relates to a positioning device of a leather laser cutting machine, and provides the following scheme aiming at the problems that a positioning device for leather is lacked and leather with different thicknesses cannot be cut in the existing leather cutting process: the positioning device comprises two brackets, and a plurality of through holes are formed in the two brackets; according to the automatic leather cutting device, leather to be cut is automatically conveyed to a cutting position through the conveying belt of the output mechanism, manual operation is reduced, working efficiency is improved, the positioning mechanism is designed, and the leather cutting device is convenient to operate and high in practicability. According to the leather cutting device, it can be ensured that leather is adsorbed to the conveying belt and continuously kept fixed in the cutting process, position deviation is prevented, the cutting precision is improved, the device can meet the cutting requirements of leather with different thicknesses through the design of the lifting mechanism, and the universality and practicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting, in particular to a positioning device for a leather laser cutting machine. Background Art

[0002] Leather is the animal skin that has been denatured and is not easily perishable after physical and chemical processing such as hair removal and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. Its surface has a special grain layer, with natural grain and luster, and comfortable hand feeling, etc. In the leather processing industry, leather needs to be cut into small pieces of different sizes and shapes, and laser cutting technology is widely used because of its high precision and high efficiency.

[0003] In the existing leather laser cutting machines, there is a lack of a positioning device for leather, resulting in the position of the leather being prone to deviation during the cutting process, thus affecting the cutting accuracy and product quality. And in order to improve the cutting efficiency, multiple pieces of leather are usually stacked together for cutting. The traditional cutting machine cannot move up and down because the guide rail is fixed on the bracket, so it cannot meet the requirement of cutting leather with different thicknesses. Therefore, we propose a positioning device for a leather laser cutting machine to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies in the prior art that there is a lack of a positioning device for leather during leather cutting and it cannot meet the requirement of cutting leather with different thicknesses, and to propose a positioning device for a leather laser cutting machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A positioning device for a leather laser cutting machine includes two brackets. A plurality of through holes are provided on both brackets. First guide rails are arranged on the tops of both brackets. First sliders are slidably connected to both first guide rails. The same second guide rail is fixedly connected to the sides of the two first sliders close to each other. Two second sliders are slidably connected to the second guide rail. The device further includes:

[0007] Two cutting mechanisms, which are arranged on the corresponding second sliders and are used for cutting leather;

[0008] An output mechanism, which is arranged between the two brackets and is used for automatically loading and unloading leather;

[0009] A positioning mechanism, which is arranged between the two brackets and is used for fixing the leather moving on the output mechanism;

[0010] Lifting mechanism, which is fixedly arranged on two brackets and is used to move two cutting structures up and down, facilitating the cutting of leather with different thicknesses.

[0011] In a possible design, the cutting mechanism includes a pneumatic telescopic cylinder, which is fixedly arranged on one side of the second slider, and a CCD camera is fixedly arranged on one side of the second slider. The output end of the pneumatic telescopic cylinder is fixedly connected with a laser cutting head.

[0012] In a possible design, the output mechanism includes two conveying rollers. The two ends of the two conveying rollers are respectively rotatably connected to the mutually close sides of the two brackets. The same conveyor belt is drivingly connected to the two conveying rollers, and a plurality of air holes for ventilation are formed in the conveyor belt. A second motor is fixedly connected to one side of one of the brackets, and the output end of the second motor is fixedly connected to one of the conveying rollers.

[0013] In a possible design, the positioning mechanism includes a negative pressure frame, which is fixedly arranged on the mutually close sides of the two brackets. The negative pressure frame is located between the two conveying rollers. A plurality of air pressure pipes are fixedly arranged on the inner walls of both sides of the negative pressure frame. A plurality of connecting pipes are arranged on the mutually close sides of adjacent two air pressure pipes, and the connecting pipes are respectively communicated with the two air pressure pipes. A plurality of air pressure holes are formed in the tops of the plurality of air pressure pipes, and the air pressure holes are in contact with the conveyor belt. A plurality of hollow pipes are arranged on both sides of the negative pressure frame, and the hollow pipes are communicated with the corresponding connecting pipes. The ends of the hollow pipes far away from the negative pressure frame pass through the corresponding through holes and extend to the brackets. Air pressure components for generating air pressure are arranged on both sides of the two brackets.

[0014] In a possible design, the air pressure component includes a protective box, which is fixedly arranged on one side of the bracket and is communicated with the hollow pipe. A plurality of negative pressure fans for generating air pressure are fixedly arranged at the bottom of the protective box.

[0015] In a possible design, a soft sealing strip for being in contact with the conveyor belt is fixedly arranged on the top of the negative pressure frame.

[0016] In a possible design, the lifting mechanism includes four screw jacks. The four screw jacks are fixedly arranged in pairs on both sides of the two brackets, and the output ends of the four screw jacks are fixedly connected to the bottoms of the corresponding first guide rails. The two screw jacks on the same bracket are drivingly connected with the same first transmission rod. A driving component for driving the four screw jacks is fixedly connected to the bottom of the bracket.

[0017] In a possible design, the driving assembly includes a first motor, which is fixedly arranged between two brackets and is located below the conveying mechanism. A same second transmission rod is rotatably connected to one side of the two brackets close to each other. A first worm gear is arranged on the second transmission rod. A first worm is fixedly arranged at the output end of the first motor. The first worm is in transmission connection with the first worm gear. Second worms are arranged at both ends of the second transmission rod. Second worm gears are arranged on both first transmission rods. The second worms are in transmission connection with the corresponding second worm gears.

[0018] In this application, first, the leather to be cut is placed on the conveyor belt. The second motor is started to drive the conveyor roller to rotate, thereby driving the conveyor belt to rotate, so that the leather to be cut on the conveyor belt moves to the designated position. The CCD camera on the second slider scans the leather to be cut, and then the scanned result is transmitted to the computer. The software in the computer calculates the best cutting plan.

[0019] Then, the negative pressure fans on the two brackets are started. The air in the air pressure pipe of the negative pressure frame communicated with the protection box is pumped out by the wind generated by the negative pressure fans, so that the air in the air pressure pipe circulates rapidly to generate negative pressure. Also, because the air pressure pipe is attached to the conveyor belt and a plurality of air holes are arranged on the conveyor belt, the leather placed on the conveyor belt is adsorbed on the conveyor belt, preventing the leather from moving during the cutting process and affecting the cutting. Then, the laser cutting head is started to cut the leather to be cut. After the cutting is completed, the second motor is started continuously to drive the conveyor belt to move, so that the leather on it moves until it falls into the collection box.

[0020] When cutting leather with different thicknesses or multiple pieces of leather stacked together, the first motor is started. The first worm on the first motor drives the first worm gear on the second transmission rod to rotate, thereby driving the second transmission rod to rotate. Then, the second worms at both ends of the second transmission rod drive the second worm gears on the two first transmission rods to rotate respectively, thereby starting the four screw jacks connected to the first transmission rods, driving the output ends of the screw jacks to move up and down, and then adjusting the two first guide rails on it to move up and down, so that the cutting assembly on the two first guide rails can be adjusted up and down according to leather with different thicknesses to reach the best cutting state.

[0021] Beneficial effects:

[0022] In this utility model, for the positioning device of the leather laser cutting machine, the conveyor belt of the output mechanism automatically conveys the leather to be cut to the cutting position, reducing manual operation and improving work efficiency;

[0023] In the present utility model, for the positioning device of a leather laser cutting machine, through the design of the positioning mechanism, it can ensure that the leather is adsorbed on the conveyor belt and remains fixed during the cutting process, preventing position deviation and improving the cutting accuracy.

[0024] In the present utility model, for the positioning device of a leather laser cutting machine, through the design of the lifting mechanism, the device can adapt to the cutting requirements of leathers with different thicknesses, improving the versatility and practicality of the device.

[0025] In the present utility model, through the conveyor belt of the output mechanism, the leather to be cut is automatically conveyed to the cutting position, reducing manual operation and improving work efficiency. Through the design of the positioning mechanism, it can ensure that the leather is adsorbed on the conveyor belt and continuously remains fixed during the cutting process, preventing position deviation and improving the cutting accuracy. Through the design of the lifting mechanism, the device can adapt to the cutting requirements of leathers with different thicknesses, improving the versatility and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of a positioning device of a leather laser cutting machine proposed by the present utility model;

[0027] Figure 2 is another perspective three-dimensional structural schematic diagram of a positioning device of a leather laser cutting machine proposed by the present utility model;

[0028] Figure 3 is a three-dimensional structural schematic diagram of the installation of a negative pressure frame of a positioning device of a leather laser cutting machine proposed by the present utility model;

[0029] Figure 4 is a three-dimensional structural schematic diagram of the installation of a negative pressure fan of a positioning device of a leather laser cutting machine proposed by the present utility model;

[0030] Figure 5 is a three-dimensional structural schematic diagram of a cutting mechanism of a positioning device of a leather laser cutting machine proposed by the present utility model;

[0031] Figure 6 is a three-dimensional structural schematic diagram of a negative pressure frame of a positioning device of a leather laser cutting machine proposed by the present utility model.

[0032] In the figure: 1. Bracket; 2. Screw jack; 3. First guide rail; 4. First slider; 5. Second slider; 6. First transmission rod; 7. First motor; 8. Second transmission rod; 9. Conveyor roller; 10. Conveyor belt; 11. Second motor; 12. Negative pressure frame; 121. Air pressure pipe; 122. Connecting pipe; 123. Soft sealing strip; 124. Hollow pipe; 13. Protection box; 14. Negative pressure fan; 15. CCD camera; 16. Pneumatic telescopic cylinder; 17. Laser cutting head; 18. Second guide rail. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0034] Embodiment 1

[0035] Referring to Figure 1-6 , a positioning device includes two brackets 1. A plurality of through holes are provided on both brackets 1 to facilitate subsequent connection and fixation with other components. At the top of the bracket 1, a first guide rail 3 is provided, and a first slider 4 is slidably connected to the first guide rail 3 to ensure that the first slider 4 can slide smoothly on the first guide rail 3. On one side of the two first sliders 4 close to each other, the same second guide rail 18 is fixedly connected to provide a sliding track for the second slider 5.

[0036] The output mechanism mainly includes two conveying rollers 9 and a conveyor belt 10. Both ends of the conveying roller 9 are rotatably connected to one side of the two brackets 1 close to each other. The conveyor belt 10 is drivingly connected to the two conveying rollers 9 to form a closed conveying channel. One of the conveying rollers 9 is fixedly connected to the output end of the second motor 11. Through the drive of the second motor 11, the automatic conveying of the conveyor belt 10 is realized, and the feeding and discharging operations of the leather are completed. Moreover, a tensioning wheel is provided between the conveying rollers 9 to prevent the conveyor belt 10 from loosening after long-term use and affecting the conveying. In addition, a plurality of air holes are provided on the conveyor belt 10 to facilitate the wind pressure in the subsequent positioning mechanism to fix the leather through the air holes.

[0037] The positioning mechanism mainly consists of a negative pressure frame 12 and a wind pressure assembly. The negative pressure frame 12 is fixedly arranged between the two brackets 1 and is located between the two conveying rollers 9. A plurality of wind pressure pipes 121 are fixedly arranged on both inner walls of the negative pressure frame 12. Adjacent two wind pressure pipes 121 are connected and communicated through a connecting pipe 122. A plurality of wind pressure holes are provided at the top of the wind pressure pipe 121, and the wind pressure holes are in contact with the conveyor belt 10. A plurality of hollow pipes 124 are provided on both sides of the negative pressure frame 12, and the hollow pipes 124 are connected and communicated with the corresponding connecting pipes 122. And one end of the hollow pipe 124 far from the negative pressure frame 12 passes through the corresponding through hole and extends to one side of the bracket 1. On both sides of the bracket 1, a wind pressure assembly for generating wind pressure is provided, including a protection box 13 and a negative pressure fan 14. The negative pressure fan 14 generates negative pressure, which finally acts on the leather on the conveyor belt 10 through the hollow pipe 124, the connecting pipe 122 and the wind pressure pipe 121, and firmly fixes it on the conveyor belt 10 to realize the positioning function. In order to improve the sealing effect, a soft sealing strip 123 in contact with the conveyor belt 10 is also fixedly arranged on the top of the negative pressure frame 12.

[0038] The lifting mechanism is composed of four screw jacks 2 and two first transmission rods 6. The four screw jacks 2 are fixedly arranged in pairs on both sides of the two brackets 1. The output ends are fixedly connected to the bottoms of the corresponding first guide rails 3. The two screw jacks 2 located on the same bracket 1 are drivingly connected through the first transmission rod 6 to ensure the synchronous lifting of the two screw jacks 2. At the bottom of the bracket 1, a driving assembly is provided, including a first motor 7 and a second transmission rod 8. A first worm is fixedly arranged at the output end of the first motor 7. The first worm is drivingly connected to a first worm gear on the second transmission rod 8. Second worms are arranged at both ends of the second transmission rod 8 and are drivingly connected to second worm gears on the two first transmission rods 6, thereby driving the four screw jacks 2 to lift synchronously, realizing the up and down movement of the cutting mechanism to adapt to the leather cutting requirements of different thicknesses.

[0039] This application can be used in the technical field of leather cutting, and can also be used in other fields applicable to this application.

[0040] Embodiment 2

[0041] Reference Figure 5 , on the basis of Embodiment 1, it is improved: A positioning device for a leather laser cutting machine, which is applied to the technical field of leather cutting. The cutting mechanism includes a pneumatic telescopic cylinder 16 and a laser cutting head 17. The pneumatic telescopic cylinder 16 is fixedly arranged on one side of the second slider 5. By the telescopic movement of the pneumatic telescopic cylinder 16, the laser cutting head 17 is driven to move up and down. On the other side of the second slider 5, a CCD camera 15 is also fixedly arranged for precise positioning and image acquisition of the leather.

[0042] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 7 and the second motor 11 are common knowledge, and they both belong to conventional means or well-known common sense, so they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A positioning device for a leather laser cutting machine, comprising two brackets (1), each of which is provided with a plurality of through holes, a first guide rail (3) being provided on the top of each of the two brackets (1), a first slider (4) being slidably connected to each of the two first guide rails (3), a second guide rail (18) being fixedly connected to one side of the two first sliders (4) close to each other, two second sliders (5) being slidably connected to the second guide rail (18), wherein: The device also includes: Two cutting mechanisms, the cutting mechanisms being arranged on the corresponding second sliders (5) and used for cutting leather; The output mechanism and the conveying mechanism are arranged between the two brackets (1) and are used for automatically loading and unloading leather; A positioning mechanism, which is arranged between the two brackets (1) and is used to fix the leather moving on the conveying mechanism; The lifting mechanism is fixedly arranged on the two brackets (1) and is used to move the two cutting structures up and down, so as to facilitate cutting of leather of different thicknesses.

2. The positioning device of a leather laser cutting machine according to claim 1, characterized in that: The cutting mechanism comprises a pneumatic telescopic cylinder (16), the pneumatic telescopic cylinder (16) being fixedly arranged on one side of the second slider (5), and a CCD camera (15) being fixedly arranged on one side of the second slider (5), and an output end of the pneumatic telescopic cylinder (16) being fixedly connected to a laser cutting head (17).

3. The positioning device of a leather laser cutting machine according to claim 1, characterized in that: The output mechanism comprises two conveying rollers (9), the two ends of the two conveying rollers (9) are respectively rotatably connected to the sides of the two brackets (1) close to each other, the two conveying rollers (9) are transmission-connected to the same conveying belt (10), and the conveying belt (10) is provided with a plurality of air holes for ventilation, a second motor (11) is fixedly connected to one side of one of the brackets (1), and the output end of the second motor (11) is fixedly connected to one of the conveying rollers (9).

4. The positioning device for a leather laser cutting machine according to claim 1, characterized in that: The positioning mechanism comprises a negative pressure frame (12), the negative pressure frame (12) being fixedly arranged on a side where two brackets (1) are close to each other, the negative pressure frame (12) being located between two conveying rollers (9), a plurality of air pressure pipes (121) being fixedly arranged on the inner walls on both sides of the negative pressure frame (12), a plurality of connecting pipes (122) being arranged on a side where two adjacent air pressure pipes (121) are close to each other, and the connecting pipes (122) are respectively connected to the two air pressure pipes (121). The plurality of air pressure pipes (121) are connected, and a plurality of air pressure holes are provided on the tops of the plurality of air pressure pipes (121), and the air pressure holes are in contact with the conveyor belt (10), and a plurality of hollow tubes (124) are provided on both sides of the negative pressure frame (12), and the hollow tubes (124) are connected with the corresponding connecting tubes (122), and one end of the hollow tubes (124) away from the negative pressure frame (12) passes through the corresponding through hole and extends to one side of the bracket (1), and air pressure components for generating air pressure are provided on both sides of the two brackets (1).

5. The positioning device for a leather laser cutting machine according to claim 4, characterized in that: The wind pressure assembly comprises a protection box (13), the protection box (13) is fixedly arranged on one side of the bracket (1), and the protection box (13) is connected to the hollow tube (124), and a plurality of negative pressure fans (14) for generating wind pressure are fixedly arranged at the bottom of the protection box (13).

6. The positioning device for a leather laser cutting machine according to claim 5, characterized in that: A soft sealing strip (123) is fixedly arranged on the top of the negative pressure frame (12) and is used to fit the conveyor belt (10).

7. The positioning device for a leather laser cutting machine according to claim 5, characterized in that: The lifting mechanism comprises four screw lifts (2), the four screw lifts (2) are fixedly arranged in pairs on both sides of two brackets (1), and the output ends of the four screw lifts (2) are fixedly connected to the bottom of the corresponding first guide rail (3), the two screw lifts (2) located on the same bracket (1) are drivingly connected to the same first transmission rod (6), and the bottom of the bracket (1) is fixedly connected to a driving component for driving the four screw lifts (2).

8. The positioning device for a leather laser cutting machine according to claim 7, characterized in that: The driving assembly comprises a first motor (7), the first motor (7) being fixedly arranged between the two brackets (1), and the first motor (7) being located below the conveying mechanism; the two brackets (1) being rotatably connected to a same second transmission rod (8) on one side close to each other; the second transmission rod (8) being provided with a first worm gear; a first worm gear being fixedly arranged at the output end of the first motor (7), the first worm gear being transmission-connected to the first worm gear; second worm gears being arranged at both ends of the second transmission rod (8); second worm gears being arranged on the two first transmission rods (6), and the second worm gears being transmission-connected to the corresponding second worm gears.

Images