Vacuum pattern suction device for synthetic leather

Abstract

The utility model discloses a vacuum grain suction device for synthetic leather, which relates to the technical field of grain suction devices for synthetic leather and comprises a rack, a roller is rotatably mounted on the rack, a cylindrical structure formed by a plurality of fan-shaped aluminum rows in a surrounding manner is arranged on the outer wall of the roller, and a vacuum suction component is an external vacuum sucker. A plurality of air suction holes are distributed in the vacuum suction cup at equal intervals, the air suction holes are communicated with an air exhaust channel in the end face of the fan-shaped aluminum row, a copper brake pad is installed between the vacuum suction cup and the first fixing base, and a sliding groove in radial sliding fit with the end face of the fan-shaped aluminum row is formed in the support. According to the utility model, the vacuum chuck is externally arranged, so that the maintenance and replacement are more convenient and faster, the complicated internal structure does not need to be disassembled, and the maintenance cost and time are reduced. And moreover, the suction holes communicated with the fan-shaped aluminum row exhaust channel are formed in the vacuum chuck, so that the efficiency and the stability of a vacuum system are improved, the synthetic leather is ensured to be tightly attached to the ceramic mold, and the texture processing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of synthetic leather vacuum texturing device, specifically a synthetic leather vacuum texturing device. Background Technology

[0002] Synthetic leather and artificial leather, widely used materials in modern industry, have become ideal choices for many consumer products such as furniture, automotive interiors, footwear, and bags due to their leather-like appearance and feel, as well as their relatively low cost. The core characteristic of these materials is that they are composite materials formed by coating one or more layers of synthetic resin and plastic additives onto a fabric base using high-tech methods.

[0003] Vacuum texturing is a process that uses negative vacuum pressure to create specific textures on the surface of synthetic leather. A typical vacuum texturing device includes a frame, rollers, and a vacuum texturing cylinder. When preheated synthetic leather material passes through the rotating vacuum texturing cylinder, the pressure difference between atmospheric pressure and the vacuum pressure on the outer surface of the cylinder draws the material onto the cylinder's surface, creating a texture on the synthetic leather material that corresponds to the shape of the cylinder.

[0004] A vacuum pump extracts air from the vacuum suction cup through a pipe, creating a negative pressure environment. Existing vacuum suction cups are typically located on the outside of rollers or above conveyor belts, making close contact with the surface of synthetic leather.

[0005] Therefore, when a vacuum suction cup malfunctions and needs repair or replacement, its complex internal structure needs to be disassembled, resulting in a heavy workload for staff and high repair and replacement costs. Utility Model Content

[0006] To address the problem that existing vacuum suction cups on the outer side of rollers require disassembly of complex internal structures for repair or replacement, resulting in heavy workload for workers and high repair and replacement costs, this utility model provides a vacuum suction device for synthetic leather.

[0007] The technical solution adopted by this utility model is as follows: A synthetic leather vacuum texturing device includes a frame, a roller rotatably mounted on the frame, a texturing assembly provided on the outer wall of the roller, the texturing assembly being a cylindrical structure formed by several fan-shaped aluminum strips, a ceramic mold provided on the outer wall of the texturing assembly, synthetic leather wrapped around the ceramic mold, an air bladder provided between the inner wall of the texturing assembly and the outer wall of the roller for pushing the fan-shaped aluminum strips to press against the ceramic mold, the air inlet end of the air bladder communicating with the air outlet on the roller, an air source fixed on the frame at one end of the roller, and a water cooler fixed on the frame at the other end. A vacuum suction assembly is provided between the air source and the outer end face of the roller. The vacuum suction assembly is an external vacuum suction cup with several suction holes evenly distributed on it. The suction holes are connected to the air extraction channel on the end face of the fan-shaped aluminum strip. A first fixed seat is provided at the end of the vacuum suction cup near the roller. A copper brake plate is installed between the vacuum suction cup and the first fixed seat. A second fixed seat is fixedly connected to the first fixed seat. The second fixed seat is installed inside the roller. A bracket is fixedly connected to the first fixed seat and sleeved on the outer end face of the roller. The bracket has a sliding groove that slides radially with the end face of the fan-shaped aluminum strip.

[0008] Furthermore, the end face of the fan-shaped aluminum busbar is provided with a water inlet channel and a water outlet channel, and the water inlet channel is located above the water outlet channel, and the water inlet channel and the water outlet channel are connected.

[0009] Furthermore, the water inlet channel and the water outlet channel are provided in two sets, and are symmetrically distributed on both sides of the air extraction channel.

[0010] Furthermore, an air extraction channel is formed by splicing two adjacent fan-shaped aluminum bars.

[0011] Furthermore, the outer surface of the fan-shaped aluminum strip is provided with a textured groove, and an air suction channel is opened on the textured groove, which is connected to the air extraction channel.

[0012] Furthermore, one end of the roller is provided with a hollow first central shaft, and the other end is provided with a hollow second central shaft. One end of the inner wall of the roller is provided with a first partition. One end of the first central shaft is rotatably connected to the frame and communicates with an air source, while the other end passes through the second fixed seat and communicates with the air inlet of the first partition. The other end of the inner wall of the roller is provided with a second partition. One end of the second central shaft is fixedly connected to the second partition, while the other end is rotatably connected to the frame and communicates with a water cooling source.

[0013] Furthermore, both the first and second partitions are installed inside the roller and are located near the center of the roller.

[0014] Furthermore, the inflation source is an air pump, which delivers gas through the air inlet of the first partition plate to the roller through the inner wall of the first central shaft, and then through the air outlet of the roller to the air bag.

[0015] Furthermore, the water cooling source is a water pump, which delivers cooling water through water pipes to a water tank, then through the water tank to the inlet channel of the fan-shaped aluminum busbar, and finally through the outlet channel.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] This synthetic leather vacuum texturing device makes maintenance and replacement more convenient and faster by placing the vacuum suction cup externally, eliminating the need to disassemble the complex internal structure and reducing maintenance costs and time. Furthermore, the suction holes on the vacuum suction cup, which connect to the fan-shaped aluminum exhaust channel, improve the efficiency and stability of the vacuum system, ensuring a tight fit between the synthetic leather and the ceramic mold and enhancing the texture processing effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A structural schematic diagram provided for an embodiment of this utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure with rack;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of a vacuum chuck;

[0022] Figure 4 for Figure 3 Side view;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the central sector-shaped aluminum busbar;

[0024] Figure 6 for Figure 5 Top view;

[0025] Figure 7 for Figure 5 Side view;

[0026] Figure 8 for Figure 5 A schematic diagram of the structure of a fan-shaped aluminum strip spliced ​​together to form an air extraction channel.

[0027] Figure descriptions: 1. Frame; 2. Roller; 3. Fan-shaped aluminum strip; 4. Ceramic mold; 5. Airbag; 6. First partition; 7. Second partition; 8. First central shaft; 9. Second central shaft; 10. Vacuum suction cup; 11. Suction hole; 12. Air extraction channel; 13. First fixed seat; 14. Copper brake pad; 15. Second fixed seat; 16. Bracket; 17. Slide groove; 18. Water inlet channel; 19. Water outlet channel; 20. Suction groove; 21. Suction channel. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] The following is combined with Figures 1-8 This utility model will be described in detail.

[0032] Example

[0033] Depend on Figure 1-8 As can be seen, a vacuum texturing device for synthetic leather includes a frame 1, with a roller 2 rotatably mounted on the frame 1. The frame 1 is welded from high-strength steel to ensure the stability and durability of the equipment. The frame 1 is equipped with bearing seats supporting the roller 2 and a drive motor, which is the same as in the prior art and will not be described in detail here. The roller 2 is preferably made of stainless steel, which has a smooth surface and rotates flexibly. Both ends of the roller 2 are mounted on the frame via bearings and are driven to rotate by the drive motor.

[0034] The outer wall of the roller 2 is equipped with a texturing assembly, which is a cylindrical structure formed by several fan-shaped aluminum bars 3, preferably a cylindrical structure formed by 24 fan-shaped aluminum bars 3. The standard dimensions of each fan-shaped aluminum bar are an arc length of 1750 mm, a width of 68 mm, and a thickness of 50 mm. The outer surface of the fan-shaped aluminum bars is machined with 22 texturing grooves 20, with a groove depth of 2 mm and a groove width of 2.5 mm. There are 48 suction holes 21 evenly distributed on the texturing grooves, with a hole diameter of 2 mm and a hole spacing of 35 mm.

[0035] The outer wall of the texturing assembly is fitted with a ceramic mold 4, around which synthetic leather is wrapped. The size of the ceramic mold 4 matches that of the texturing assembly, and its surface is processed with a pattern corresponding to the desired texture. The depth and shape of the pattern are designed according to product requirements. The ceramic mold 4 is made of ceramic material and has strong breathability.

[0036] An air bladder 5 is provided between the inner wall of the suction assembly and the outer wall of the roller 2 to push the fan-shaped aluminum strip 3 to press against the ceramic mold 4. The air inlet of the air bladder 5 is connected to the air outlet on the roller 2. The air bladder 5 is preferably made of high-temperature and high-pressure resistant rubber.

[0037] One end of the roller 2 is equipped with an air source fixed to the frame 1. The air source inflates the airbag 5, and the gas enters the airbag 5 through the air outlet of the roller 2, causing the airbag 5 to expand. The expansion of the airbag 5 applies an outward expansion force to the fan-shaped aluminum strip 3 on the outer surface of the airbag 5. This outward expansion force allows the outer surface of the fan-shaped aluminum strip 3 to fit tightly against the inner surface of the ceramic mold 4, overcoming the friction between the ceramic mold 4 and the fan-shaped aluminum strip 3, thus fixing the fan-shaped aluminum strip 3 to the ceramic mold 4. The other end of the roller 2 is equipped with a water cooling source fixed to the frame 1. The water cooling source is used to cool the fan-shaped aluminum strip 3 to prevent the temperature of the fan-shaped ceramic mold 4 from becoming too high due to friction or preheating of the synthetic leather, which would affect the quality of the synthetic leather.

[0038] A vacuum suction assembly is provided between the air source and the outer end face of the roller 2. The vacuum suction assembly is an external vacuum suction cup 10, which has a disc-shaped structure. Several suction holes 11 are evenly distributed on the vacuum suction cup 10. The suction holes 11 are connected to the air extraction channel 12 on the end face of the fan-shaped aluminum strip 3. A first fixing seat 13 is provided at the end of the vacuum suction cup 10 closest to the roller 2, which is used to fix the vacuum suction cup 10. The suction holes 11 of the vacuum suction cup 10 are connected to the air extraction channel 12 on the end face of the fan-shaped aluminum strip 3 through a sealed pipe. When the vacuum pump is started, the air inside the vacuum suction cup 10 and the fan-shaped aluminum strip 3 is extracted, creating a negative pressure environment. Due to the strong air permeability of the ceramic mold 4 and the surface of the synthetic leather, the synthetic leather is adsorbed and adheres tightly to the ceramic mold 4 under the negative pressure.

[0039] A copper brake pad 14 is installed between the vacuum suction cup 10 and the first fixed seat 13. The copper brake pad 14 serves as a buffer and seal.

[0040] A second fixed seat 15 is fixedly connected to the first fixed seat 13. The second fixed seat 15 is installed inside the roller 2 and is rotatably connected to the inner wall of the roller 2. A bracket 16 is fixedly connected to the first fixed seat 13 and sleeved on the outer end face of the roller 2. The bracket 16 has a sliding groove 17 that radially slides with the end face of the fan-shaped aluminum strip 3. The size of the sliding groove 17 matches the end face size of the fan-shaped aluminum strip 3, which ensures the stability and flexibility of the outward expansion of the fan-shaped aluminum strip 3 when the airbag 5 is inflated.

[0041] With the cooperation of the first fixed seat 13, the second fixed seat 15 and the copper brake pad 14, the roller 2 rotates when the drive motor is started, but the vacuum suction cup 10 and the external vacuum pump connected to the vacuum suction cup will not rotate together, ensuring normal operation and forming a vacuum negative pressure environment.

[0042] In the specific implementation process, it is worth noting that the end face of the fan-shaped aluminum busbar 3 is also provided with a water inlet channel 18 and a water outlet channel 19, with the water inlet channel 18 located above the water outlet channel 19 and connected to it. Two sets of water inlet channels 18 and water outlet channels 19 are provided, symmetrically distributed on both sides of the air extraction channel 12. An air extraction channel 12 is formed by splicing two adjacent fan-shaped aluminum busbars 3. The outer surface of the fan-shaped aluminum busbar 3 is provided with a textured groove 20, and an air extraction channel 21 is provided on the textured groove 20, which is connected to the air extraction channel 12.

[0043] In the specific implementation process, it is worth noting that one end of the roller 2 is provided with a hollow first central shaft 8, and the other end is provided with a hollow second central shaft 9. One end of the inner wall of the roller 2 is provided with a first partition 6. One end of the first central shaft 8 is rotatably connected to the frame 1 and communicates with the air source, while the other end passes through the second fixed seat 15 and communicates with the air inlet of the first partition 6. The inflation gas enters the roller 2 through the air inlet of the first partition 6 inside the first central shaft 8, and then enters the air bag 5 through the air outlet of the roller 2, causing the air bag 5 to expand and push the fan-shaped aluminum strip 3 to press against the ceramic mold 4.

[0044] A second partition 7 is provided at the other end of the inner wall of the roller 2. One end of the second central shaft 9 is fixedly connected to the second partition 7, and the other end is rotatably connected to the frame 1 and connected to the water cooling source. The cooling water from the water cooling source enters the water-filled cavity formed by the second partition 7 and the end face of the roller 2 through the inside of the second central shaft 9, and then enters the water inlet channel 18 of the fan-shaped aluminum busbar 3 through the water-filled cavity. This is existing technology and will not be described in detail here. The water is used to cool the busbar. The cooled water is discharged through the water outlet channel 19, which effectively controls the temperature of the fan-shaped aluminum busbar 3.

[0045] In the specific implementation process, it is worth noting that both the first partition 6 and the second partition 7 are installed inside the roller 2 and are located near the middle of the roller 2. The first partition 6 and the second partition 7 are both at a certain distance from the port of the roller 2 to ensure the flow of gas and water and the installation space of each component.

[0046] In the specific implementation process, it is worth noting that the inflation source is an air pump. The air pump delivers gas through the air inlet of the first partition plate 6 to the roller 2 through the inner wall of the first central shaft 8, and then through the air outlet of the roller 2 to the air bag 5.

[0047] In the specific implementation process, it is worth noting that the water cooling source is a water pump. The water pump delivers cooling water to the water tank through water pipes, and then delivers it to the inlet channel 18 of the fan-shaped aluminum busbar 3 through the water tank, and then discharges it through the outlet channel 19.

[0048] Specifically, when using this synthetic leather vacuum texturing device, the synthetic leather material is wrapped around the ceramic mold 4, ensuring the material is flat and wrinkle-free. The equipment is started, and the drive motor rotates the roller 2. The rotation of the roller 2 causes the cylindrical structure—the texturing assembly—composed of several fan-shaped aluminum strips 3, to rotate. The rotation of the texturing assembly causes the synthetic leather on the ceramic mold to rotate accordingly. Due to the placement of the first fixed seat 13, the copper brake pad 14, and the second fixed seat 15, the vacuum suction cup 10 remains fixed and does not rotate with the roller 2.

[0049] The vacuum pump is started, and the air inside the vacuum suction cup 10 is extracted through the pipeline to form a negative pressure environment. The suction hole 11 on the vacuum suction cup is connected to the air extraction channel 12 on the end face of the fan-shaped aluminum strip 3. The negative pressure is transmitted through the suction hole 11 to the suction channel 21 on the suction groove 20 on the fan-shaped aluminum strip 3. Because the ceramic mold 4 has strong air permeability, the synthetic leather is adsorbed and adheres tightly to the ceramic mold 4 under the action of negative pressure.

[0050] Under negative pressure, the synthetic leather is pressed tightly onto the pattern of the ceramic mold 4, and the shape of the pattern is transferred to the surface of the synthetic leather to form the desired texture. The fan-shaped aluminum strips 3 of the texture-absorbing component press firmly against the ceramic mold 4 under external force, further enhancing the clarity and consistency of the texture.

[0051] The water pump starts, delivering cooling water to the inlet channel 18 of the fan-shaped aluminum drain 3, and then discharging it through the outlet channel 19, carrying away the heat generated by the synthetic leather and equipment to prevent material deformation. The temperature of the cooling water is maintained below 10℃ to ensure that the synthetic leather quickly sets after the texture is formed, maintaining the stability and consistency of the texture.

[0052] After processing, the synthetic leather is output from the machine's outlet, at which point the desired texture has been formed on its surface. Further processing or direct use in product manufacturing can then be carried out as needed.

[0053] Vacuum embossing technology can precisely transfer patterns to the surface of synthetic leather, resulting in clear and consistent textures. It is suitable for synthetic leather materials of various shapes and sizes and can process complex textures. Automated production is achieved through continuous roller rotation or conveyor belt transport, improving production efficiency. Compared to traditional mechanical embossing, vacuum embossing causes less damage to the material and results in lower material waste.

[0054] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum texturing device for synthetic leather, characterized in that: The machine includes a frame (1), a roller (2) rotatably mounted on the frame (1), the outer wall of the roller (2) is provided with a texturing assembly, the texturing assembly is a cylindrical structure surrounded by several fan-shaped aluminum bars (3), the outer wall of the texturing assembly is provided with a ceramic mold (4), synthetic leather is wrapped around the ceramic mold (4), the inner wall of the texturing assembly and the outer wall of the roller (2) are provided with an airbag (5) for pushing the fan-shaped aluminum bars (3) to press against the ceramic mold (4), the air inlet end of the airbag (5) is connected to the air outlet on the roller (2), one end of the roller (2) is provided with an air source fixed on the frame (1), the other end is provided with a water cooling source fixed on the frame (1), and a vacuum suction assembly is provided between the air source and the outer end face of the roller (2). The vacuum suction assembly is an external vacuum suction cup (10). Several suction holes (11) are evenly distributed on the vacuum suction cup (10). The suction holes (11) are connected to the air extraction channel (12) on the end face of the fan-shaped aluminum busbar (3). A first fixed seat (13) is provided at one end of the vacuum suction cup (10) near the roller (2). A copper brake plate (14) is installed between the vacuum suction cup (10) and the first fixed seat (13). A second fixed seat (15) is fixedly connected to the first fixed seat (13). The second fixed seat (15) is installed inside the roller (2). A bracket (16) is fixedly connected to the first fixed seat (13) and sleeved on the outer end face of the roller (2). A sliding groove (17) is opened on the bracket (16) to slide radially with the end face of the fan-shaped aluminum busbar (3).

2. The synthetic leather vacuum texturing device according to claim 1, characterized in that: The end face of the fan-shaped aluminum busbar (3) is also provided with a water inlet channel (18) and a water outlet channel (19), and the water inlet channel (18) is located above the water outlet channel (19), and the water inlet channel (18) and the water outlet channel (19) are connected.

3. The synthetic leather vacuum texturing device according to claim 2, characterized in that: The water inlet channel (18) and water outlet channel (19) are provided in two sets and are symmetrically distributed on both sides of the air extraction channel (12).

4. The synthetic leather vacuum texturing device according to claim 1, characterized in that: An air extraction channel (12) is formed by splicing two adjacent fan-shaped aluminum bars (3).

5. The synthetic leather vacuum texturing device according to claim 4, characterized in that: The outer surface of the fan-shaped aluminum strip (3) is provided with a textured groove (20), and an air suction channel (21) is provided on the textured groove (20). The air suction channel (21) is connected to the air extraction channel (12).

6. The synthetic leather vacuum texturing device according to claim 1, characterized in that: One end of the roller (2) is provided with a hollow first central shaft (8), and the other end is provided with a hollow second central shaft (9). One end of the inner wall of the roller (2) is provided with a first partition (6). One end of the first central shaft (8) is rotatably connected to the frame (1) and connected to the air source. The other end passes through the second fixed seat (15) and is connected to the air inlet of the first partition (6). The other end of the inner wall of the roller (2) is provided with a second partition (7). One end of the second central shaft (9) is fixed to the second partition (7), and the other end is rotatably connected to the frame (1) and connected to the water cooling source.

7. The synthetic leather vacuum texturing device according to claim 6, characterized in that: The first partition (6) and the second partition (7) are both installed inside the roller (2) and are located near the middle of the roller (2).

8. The synthetic leather vacuum texturing device according to claim 6, characterized in that: The inflation source is an air pump. The air pump delivers gas through the air inlet of the first partition (6) to the roller (2) via the inner wall of the first central shaft (8), and then through the air outlet of the roller (2) to the air bag (5).

9. The synthetic leather vacuum texturing device according to claim 2, characterized in that: The water cooling source is a water pump. The water pump delivers cooling water to the water tank through the water pipe, and then delivers it to the inlet channel (18) of the fan-shaped aluminum busbar (3) through the water tank, and then discharges it through the outlet channel (19).

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