Laser cutting device for leather processing

Abstract

The invention discloses a laser cutting device for leather processing, and relates to the technical field of leather processing. The laser cutting device comprises a cutting table, a laser cutting head is arranged above the cutting table, and an adjusting mechanism is arranged on the outer side of the laser cutting head; a smoke suction hood is arranged above the cutting table and located on the outer side of the laser cutting head, a collecting hood is fixedly installed at the bottom of the smoke suction hood, smoke generated by laser cutting can be sucked away through the smoke suction hood and the collecting hood, interference of the smoke to cutting can be reduced, and due to the fact that the smoke has certain irritation, the cutting efficiency is improved. When a worker operates, the worker can be prevented from inhaling smoke, meanwhile, the situation that when the focus is too low and the smoke becomes large and thick, leather is adsorbed by a collecting cover, and the leather is driven to move during moving can be effectively prevented, the cutting efficiency is improved, and meanwhile when the laser cutting focus is low, the laser cutting efficiency is improved. And the laser cutting head is controlled to move upwards by a certain distance to be located at a normal focus.

Description

Technical Field

[0001] The invention relates to the technical field of leather processing equipment, and in particular to a laser cutting device for leather processing. Background Art

[0002] Leather is a denatured and non-perishable animal skin obtained through physical and chemical processing such as dehairing and tanning. Leather is composed of natural protein woven in three-dimensional space. Its surface has a special grain layer with natural grain and luster and feels comfortable. The leather industry covers the main industries such as tanning, shoemaking, leather clothing, and leather goods. It is generally laser cut to remove excess leather.

[0003] In the patent (application number: CN201620179515.7), a leather laser cutting machine with a positioning device is disclosed. It includes a base and a leather working platform arranged on the base. A transverse axis driving mechanism and a longitudinal axis driving mechanism are arranged above the leather working platform. The transverse axis driving mechanism is provided with a laser cutting device linked to the transverse axis driving mechanism. The leather working platform is provided with at least two groups of positioning devices for positioning the leather. The positioning device includes rails arranged at both ends of the leather working platform in the transverse direction and at both ends of the leather working platform in the axial direction and a positioning mechanism arranged on the rails and capable of reciprocatingly sliding on the rails. The utility model provides a leather laser cutting machine with a positioning device that has a fixing function for leather placed on a working platform waiting to be cut.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] During leather laser cutting, the organic components in the leather are heated and decomposed, releasing gases and tiny particles to form smoke. This smoke will have a certain impact on the health of the workers. During processing, a smoking mechanism is often provided, but the existing smoking mechanism is located on one side of the laser cutting head. When the leather is cut under special circumstances such as focus error, a large amount of smoke will be generated. At this time, the smoking mechanism on one side of the cutting head cannot completely remove it, which will have a certain impact on the workers and the environment. Summary of the invention

[0006] The purpose of the present invention is to solve the above-mentioned problem and provide a laser cutting device for leather processing.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A laser cutting device for leather processing comprises a cutting table, a laser cutting head is arranged above the cutting table, and an adjustment mechanism is arranged outside the laser cutting head;

[0009] A smoke extraction hood is arranged above the cutting table, the smoke extraction hood is located outside the laser cutting head, a collecting hood is fixedly installed at the bottom of the smoke extraction hood, the adjustment mechanism comprises a smoke extraction pipe fixedly installed outside the collecting hood, an adsorption hood is fixedly installed on one side of the smoke extraction hood, the smoke extraction pipe is connected with the adsorption hood, the adsorption hood is connected with the smoke extraction hood, a groove is provided on the surface of the collecting hood, an air discharge plate is rotatably installed on the collecting hood through the groove, a sliding groove is provided on one side of the smoke extraction hood, two groups of sliding grooves are symmetrically arranged, an adjustment ring is provided on the surface of the smoke extraction hood, and the adjustment ring is slidably connected with the smoke extraction hood through the sliding groove;

[0010] A connecting piece is rotatably installed on one side of the inner wall of the smoking hood, and two groups of connecting pieces are symmetrically arranged. A connecting rod is rotatably installed on the connecting piece. A fixing piece is fixedly installed on the side of the adjusting ring close to the laser cutting head through a sliding groove, and a matching rod is rotatably installed between the fixing piece and the connecting rod. A guide plate is arranged on one side of the laser cutting head, and the guide plate is fixedly connected to the connecting piece. The adsorption hood, smoking pipe, slot, sliding groove, and connecting piece are arranged in four groups in a ring shape. A connecting rope is fixedly installed between the adjusting ring and the air release plate, and a smoke sensor is fixedly installed on the inner wall of the collecting hood.

[0011] Furthermore, a sealing plate is slidably mounted on the inner wall of the smoking hood, and four groups of the sealing plates are arranged in a ring shape.

[0012] Furthermore, the sealing plate is located at the connection point between the adsorption hood and the smoking hood, and a linkage rod is rotatably installed between the sealing plate and the guide plate.

[0013] Furthermore, a support plate is fixedly installed on one side of the smoking hood, a first electric telescopic rod is fixedly installed on the bottom of the support plate, and the first electric telescopic rod is fixedly connected to the top of the adjusting ring.

[0014] Furthermore, a second electric telescopic rod is fixedly installed on the inner top of the smoking hood, and an output end of the second electric telescopic rod is fixedly connected to the laser cutting head.

[0015] Furthermore, a fixing ring is fixedly mounted on the surface of the laser cutting head, and the fixing ring is slidably connected to the inner wall of the smoke hood.

[0016] Furthermore, the smoke sensor is electrically connected to the first electric telescopic rod and the second electric telescopic rod.

[0017] Furthermore, a connecting pipe is fixedly installed on the top of the smoking hood, the connecting pipe is communicated with the smoking hood, and one end of the connecting pipe is fixedly connected to the smoking mechanism.

[0018] Furthermore, the guide plate is made of rubber material.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention utilizes a smoke hood and a collecting hood to absorb the smoke generated by laser cutting, which can reduce the interference of smoke on cutting. Since the smoke is irritating to a certain extent, it can prevent the staff from inhaling the smoke when they are operating. At the same time, it can effectively prevent the leather from being adsorbed by the collecting hood when the smoke becomes larger and thicker due to the focus being too low, thereby driving the leather to move when moving, thereby improving the cutting efficiency. At the same time, when the laser cutting focus is low, the laser cutting head is controlled to move upward a certain distance so that it is at a normal focus.

[0021] 2. The present invention utilizes a sealing plate to block the connection between the adsorption hood and the smoking hood when the smoke concentration is lower than a threshold value, so that the vertical adsorption airflow of the smoking mechanism no longer enters the adsorption hood, allowing the smoke to stay in the collection hood longer. At the same time, the laser cutting head moves downward to lower the focus until the smoke concentration is at a normal threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the present invention;

[0023] Figure 2 is a schematic diagram of a smoking hood of the present invention;

[0024] Figure 3 It is a schematic diagram of the interior of the smoking hood of the present invention;

[0025] Figure 4 is a schematic diagram of the laser cutting head of the present invention;

[0026] Figure 5 The present invention Figure 4 Schematic diagram at A in the middle;

[0027] Figure 6 It is a schematic diagram of the bottom of the collecting cover of the present invention.

[0028] Figure numerals: 1. cutting table; 2. laser cutting head; 3. adjusting mechanism; 301. smoking pipe; 302. adsorption hood; 303. air release plate; 304. sliding groove; 305. adjusting ring; 306. connecting piece; 307. connecting rod; 308. fixing piece; 309. matching rod; 310. guide plate; 4. smoking hood; 5. collecting hood; 6. connecting rope; 7. sealing plate; 8. linkage rod; 9. supporting plate; 10. first electric telescopic rod; 11. second electric telescopic rod; 12. fixing ring; 13. smoke sensor; 14. connecting pipe. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] A laser cutting device for leather processing according to a preferred embodiment of the present invention will be described in detail below.

[0031] Embodiment 1, as Figure 1-Figure 6 As shown, it comprises a cutting table 1, a laser cutting head 2 is arranged above the cutting table 1, and an adjustment mechanism 3 is arranged outside the laser cutting head 2;

[0032] A smoke extraction hood 4 is arranged above the cutting table 1, and the smoke extraction hood 4 is located outside the laser cutting head 2. A collecting hood 5 is fixedly installed at the bottom of the smoke extraction hood 4. The adjusting mechanism 3 comprises a smoke extraction pipe 301 fixedly installed outside the collecting hood 5. An adsorption hood 302 is fixedly installed on one side of the smoke extraction hood 4. The smoke extraction pipe 301 is connected with the adsorption hood 302, and the adsorption hood 302 is connected with the smoke extraction hood 4. A groove is provided on the surface of the collecting hood 5, and an air release plate 303 is rotatably installed on the collecting hood 5 through the groove. A sliding groove 304 is provided on one side of the smoke extraction hood 4, and two groups of sliding grooves 304 are symmetrically arranged. An adjusting ring 305 is provided on the surface of the smoke extraction hood 4, and the adjusting ring 305 is slidably connected with the smoke extraction hood 4 through the sliding groove 304.

[0033] A connecting piece 306 is rotatably mounted on one side of the inner wall of the smoking hood 4, and two groups of connecting pieces 306 are symmetrically arranged. A connecting rod 307 is rotatably mounted on the connecting piece 306. A fixing piece 308 is fixedly mounted on the side of the adjusting ring 305 close to the laser cutting head 2 through a sliding groove 304. A matching rod 309 is rotatably mounted between the fixing piece 308 and the connecting rod 307. A guide plate 310 is arranged on one side of the laser cutting head 2, and the guide plate 310 is fixedly connected to the connecting piece 306. The adsorption hood 302, the smoking pipe 301, the slot, the sliding groove 304, and the connecting piece 306 are arranged in four groups in an annular manner. A connecting rope 6 is fixedly mounted between the adjusting ring 305 and the air release plate 303. A smoke sensor 13 is fixedly mounted on the inner wall of the collecting hood 5.

[0034] First, the staff puts the leather on the surface of the cutting table 1, moves the collecting hood 5 to a certain gap from the leather, and then starts the laser cutting head 2 to cut the leather surface. The smoking mechanism sucks out the smoke generated by the cutting through the smoking hood 4 and the collecting hood 5. At the same time, the smoke sensor 13 detects the smoke generated by the leather. When the focus of the laser cutting head 2 is too low, since the laser energy cannot be concentrated on the leather surface, but inside or below the leather, it will cause heat accumulation, making the cutting point prone to overheating, causing the leather to be scorched or burnt, which will make the smoke thicker and more diffuse. Due to the increase in smoke, it is difficult for the smoking mechanism to completely absorb it, and the smoke will accumulate at this time. Inside the adsorption hood 302, due to excessive smoke, the air flow inside the collection hood 5 is unstable, resulting in abnormal negative pressure, which in turn causes the leather to be adsorbed onto the collection hood 5. When the smoke sensor 13 detects that the smoke concentration exceeds the preset threshold, the laser cutting head 2 moves upward by a certain distance, and the focus that is too low moves to the normal position. The adjustment ring 305 moves upward. At this time, the adjustment ring 305 drives the matching rod 309 to move upward through the fixing part 308. The matching rod 309 continues to move upward. Since the matching rod 309 is rotatably connected to the connecting rod 307, the connecting rod 307 rotates under the movement of the matching rod 309, thereby driving the connecting rod 307 to deflect upward. The guide plate 310 is driven to deflect synchronously, thereby guiding the adsorption airflow generated by the smoking mechanism, so that part of the airflow enters the adsorption hood 302 and the smoking tube 301, and part of the vertical adsorption airflow is converted to smoke from the side of the collecting hood 5. At the same time, when the adjusting ring 305 moves upward, the air release plate 303 is pulled to rotate through the connecting rope 6, thereby partially opening the side of the collecting hood 5, exhausting part of the air, reducing the negative pressure in the collecting hood 5, and making it difficult for the leather to be adsorbed on the surface of the collecting hood 5. At the same time, since part of the vertical adsorption airflow is converted into the side adsorption airflow, the smoke accumulated in the collecting hood 5 will be discharged from the side of the collecting hood 5 and connected to the smoking tube 301. The smoke generated by laser cutting can be sucked away by the smoking hood 4 and the collecting hood 5, which can reduce the interference of smoke on cutting. Since the smoke is irritating to a certain extent, it can prevent the staff from inhaling the smoke when they are operating. At the same time, it can effectively prevent the leather from being adsorbed by the collecting hood 5 when the smoke becomes larger and thicker due to the focus being too low, thereby driving the leather to move when moving, thereby improving the cutting efficiency. Furthermore, a sealing gasket is arranged inside the sliding groove 304. When the adjusting ring 305 drives the fixing part 308 to slide through the sliding groove 304, the sealing gasket can fit and seal the sliding groove 304 to ensure a certain sealing performance.

[0035] Embodiment 2, as Figure 2-Figure 6As shown, a sealing plate 7 is slidably mounted on the inner wall of the smoking hood 4, and four groups of sealing plates 7 are arranged in an annular shape. The sealing plate 7 is located at the connection between the adsorption hood 302 and the smoking hood 4, and a linkage rod 8 is rotatably mounted between the sealing plate 7 and the guide plate 310. A support plate 9 is fixedly mounted on one side of the smoking hood 4, and a first electric telescopic rod 10 is fixedly mounted on the bottom of the support plate 9, and the first electric telescopic rod 10 is fixedly connected to the top of the adjustment ring 305;

[0036] When the smoke sensor 13 detects that the smoke concentration is lower than the preset threshold, the adjustment ring 305 moves downward, and the fixing part 308 drives the connecting rod 307 to move downward through the matching rod 309. At this time, the connecting rod 307 drives the guide plate 310 to move downward. When the guide plate 310 moves downward, it drives the sealing plate 7 to move upward through the linkage rod 8, thereby blocking the connection between the adsorption hood 302 and the smoking hood 4, so that the vertical adsorption airflow of the smoking mechanism no longer enters the adsorption hood 302, so that the smoke stays in the collection hood 5 longer, and at the same time, the laser cutting head 2 moves downward to lower the focus until the smoke concentration is at the normal threshold.

[0037] Embodiment three, as Figure 2-Figure 4 As shown, a second electric telescopic rod 11 is fixedly installed on the inner top of the smoking hood 4, and the output end of the second electric telescopic rod 11 is fixedly connected to the laser cutting head 2;

[0038] The second electric telescopic rod 11 can be used to drive the laser cutting head 2 to move up and down, thereby fine-tuning the focus.

[0039] Embodiment 4, as Figure 2-Figure 6 As shown, a fixing ring 12 is fixedly mounted on the surface of the laser cutting head 2, the fixing ring 12 is slidably connected to the inner wall of the smoking hood 4, and the smoke sensor 13 is electrically connected to the first electric telescopic rod 10 and the second electric telescopic rod 11;

[0040] The smoke sensor 13 can detect the smoke generated by cutting, and can also control the first electric telescopic rod 10 and the second electric telescopic rod 11 to perform fine adjustments.

[0041] Embodiment 5, as Figure 1-Figure 6 As shown, a connecting pipe 14 is fixedly installed on the top of the smoking hood 4, the connecting pipe 14 is connected to the smoking hood 4, one end of the connecting pipe 14 is fixedly connected to the smoking mechanism, and the guide plate 310 is set to a rubber material;

[0042] By utilizing the provided connecting pipe 14 , the smoking mechanism can transmit the adsorbed airflow through the connecting pipe 14 to the smoking hood 4 , so as to absorb the smoke generated during the leather cutting.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser cutting device for leather processing, comprising a cutting table (1), characterized in that: A laser cutting head (2) is arranged above the cutting table (1), and an adjustment mechanism (3) is arranged outside the laser cutting head (2); A smoke extraction hood (4) is arranged above the cutting table (1), the smoke extraction hood (4) is located outside the laser cutting head (2), a collecting hood (5) is fixedly installed at the bottom of the smoke extraction hood (4), the adjustment mechanism (3) comprises a smoke extraction pipe (301) fixedly installed outside the collecting hood (5), an adsorption hood (302) is fixedly installed on one side of the smoke extraction hood (4), the smoke extraction pipe (301) is connected with the adsorption hood (302), the adsorption hood (302) is connected with the smoke extraction hood (4), a groove is provided on the surface of the collecting hood (5), a gas relief plate (303) is rotatably installed on the collecting hood (5) through the groove, a sliding groove (304) is provided on one side of the smoke extraction hood (4), two groups of sliding grooves (304) are symmetrically arranged, an adjustment ring (305) is provided on the surface of the smoke extraction hood (4), and the adjustment ring (305) is slidably connected with the smoke extraction hood (4) through the sliding groove (304); A connecting piece (306) is rotatably mounted on one side of the inner wall of the smoking hood (4), and the connecting piece (306) is symmetrically arranged in two groups. A connecting rod (307) is rotatably mounted on the connecting piece (306). A fixing piece (308) is fixedly mounted on the side of the adjusting ring (305) close to the laser cutting head (2) through a sliding groove (304), and a matching rod (309) is rotatably mounted between the fixing piece (308) and the connecting rod (307). A guide plate (310) is arranged on one side of the laser cutting head (2), and the guide plate (310) is fixedly connected to the connecting piece (306). The adsorption hood (302), the smoking pipe (301), the slot, the sliding groove (304), and the connecting piece (306) are arranged in four groups in an annular shape. A connecting rope (6) is fixedly mounted between the adjusting ring (305) and the air release plate (303), and a smoke sensor (13) is fixedly mounted on the inner wall of the collecting hood (5).

2. A laser cutting device for leather processing according to claim 1, characterized in that: A sealing plate (7) is slidably mounted on the inner wall of the smoking hood (4), and four groups of the sealing plates (7) are arranged in an annular shape.

3. A laser cutting device for leather processing according to claim 2, characterized in that: The sealing plate (7) is located at the connection point between the adsorption cover (302) and the smoking cover (4), and a linkage rod (8) is rotatably installed between the sealing plate (7) and the guide plate (310).

4. The laser cutting device for leather processing according to claim 1, characterized in that: A support plate (9) is fixedly mounted on one side of the smoking hood (4), a first electric telescopic rod (10) is fixedly mounted on the bottom of the support plate (9), and the first electric telescopic rod (10) is fixedly connected to the top of the adjustment ring (305).

5. The laser cutting device for leather processing according to claim 1, characterized in that: A second electric telescopic rod (11) is fixedly mounted on the inner top of the smoking hood (4), and an output end of the second electric telescopic rod (11) is fixedly connected to the laser cutting head (2).

6. The laser cutting device for leather processing according to claim 1, characterized in that: A fixing ring (12) is fixedly mounted on the surface of the laser cutting head (2), and the fixing ring (12) is slidably connected to the inner wall of the smoking hood (4).

7. The laser cutting device for leather processing according to claim 1, characterized in that: The smoke sensor (13) is electrically connected to the first electric telescopic rod (10) and the second electric telescopic rod (11).

8. The laser cutting device for leather processing according to claim 1, characterized in that: A connecting pipe (14) is fixedly mounted on the top of the smoking hood (4); the connecting pipe (14) is in communication with the smoking hood (4); and one end of the connecting pipe (14) is fixedly connected to the smoking mechanism.

9. The laser cutting device for leather processing according to claim 1, characterized in that: The guide plate (310) is made of rubber material.

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