Cooling and stripping mechanism for soft synthetic leather production

Abstract

The utility model discloses a kind of cooling stripping mechanisms for soft synthetic leather production, including bottom plate, the top of bottom plate is equipped with multiple adjacent cooling roller of setting, the inside of cooling roller is hollow structure and both ends are solidly provided with connecting pipe, one end of connecting pipe is solidly provided with swivel joint, the fixed end of every two adjacent swivel joints is connected by connecting elbow pipe, the fixed end of remaining swivel joint is solidly provided with infusion tube, cooling roller inside circulation flow has refrigerant;Two winding components that respectively wind synthetic leather and release paper are arranged in the top of bottom plate and at the side of cooling roller, air blowing stripping component is arranged between winding component and cooling roller. Through the above structure, by progressive cooling of three-stage cooling roller group, the internal stress of synthetic leather is evenly released, and the material embrittlement or deformation caused by sudden cooling is avoided. And refrigerant flows through three cooling rollers in turn, realizes heat energy ladder utilization, compared with single-roll cooling, it is beneficial to improve refrigerant circulation efficiency, to realize refrigerant circulation energy consumption reduction.

Description

Technical Field

[0001] This utility model relates to the field of synthetic leather production technology, and in particular to a cooling and peeling mechanism for the production of soft synthetic leather. Background Technology

[0002] In the production of soft synthetic leather, the coated synthetic leather needs to be cooled and shaped before being peeled off from the release paper.

[0003] In the prior art, a search revealed a Chinese patent disclosing "A Cooling and Peeling Mechanism for the Production of Soft Synthetic Leather," application number "201921458210.X." This patent mainly includes a workbench with a machine cover fixedly connected to its top. A placement plate is fixedly connected to the machine cover, and fixed plates are fixedly connected to the middle of both the front and rear sides of the top of the placement plate. A threaded rod is rotatably connected to each fixed plate. While this invention uses a combination of fixed plates, threaded rods, fixing components, and a moving plate to maintain stability during peeling, and uses rollers to roll and flatten the surface of the synthetic leather, making peeling smoother and more efficient, and also limiting the top of the synthetic leather for stability during movement, the use of a separating blade and two rollers to peel the composite strip results in uneven cooling of the synthetic leather after natural cooling. The interface temperature between uncooled synthetic leather and release paper is relatively high, and the bonding force between the release paper and the resin layer still has a certain strength. The instantaneous tension generated by the mechanical cutting of the separating blade may induce micro-cracks, which can easily lead to release paper breakage or local residue. Therefore, this invention provides a cooling peeling mechanism for the production of soft synthetic leather to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a cooling and peeling mechanism for the production of soft synthetic leather. Through a three-stage cooling roller assembly, the internal stress of the synthetic leather is released evenly, preventing material embrittlement or deformation caused by sudden cooling. Furthermore, the refrigerant flows sequentially through the three cooling rollers, achieving stepped utilization of thermal energy. Compared to single-roller cooling, this improves refrigerant circulation efficiency, thereby reducing refrigerant circulation energy consumption.

[0005] To achieve the above objectives, a cooling and peeling mechanism for the production of soft synthetic leather is provided, including a base plate. The top of the base plate is provided with a plurality of adjacent cooling rollers. The interior of each cooling roller is hollow and both ends are fixed with connecting pipes. One end of each connecting pipe is fixed with a rotary joint. The fixed ends of every two adjacent rotary joints are connected by a connecting bend. The fixed ends of the remaining rotary joints are fixed with liquid delivery pipes. Cooling medium circulates inside the cooling rollers.

[0006] The bottom plate is provided with two winding assemblies on the top and one side of the cooling roller, which are respectively for winding synthetic leather and release paper. An air-blowing peeling assembly is provided between the winding assembly and the cooling roller.

[0007] According to the cooling and peeling mechanism for producing soft synthetic leather, a second mounting plate is symmetrically fixed on the top of the base plate and on one side of the cooling roller. The air-blowing peeling assembly includes an air supply pipe fixed between the second mounting plates and a plurality of nozzles uniformly fixed on one side of the air supply pipe, the nozzles being arranged toward the cooling roller.

[0008] According to the cooling and peeling mechanism for producing soft synthetic leather, a third mounting plate is symmetrically fixed on the top of the base plate. The winding assembly includes a rotating shaft that rotates inside one of the third mounting plates, a rotating drum that is mounted on the other third mounting plate and is rotatable, a winding roller that is mounted between the rotating shaft and the rotating drum, and a motor fixed on the third mounting plate. The rotating shaft is fixedly connected to the output shaft of the motor.

[0009] According to the cooling and peeling mechanism for producing soft synthetic leather, the winding assembly further includes a screw threadedly connected inside the third mounting plate and two square-structured inserts symmetrically fixed at the ends of the winding roller. The drum rotates at the end of the screw, and square grooves that cooperate with the inserts are provided inside the drum and the shaft.

[0010] According to the cooling and peeling mechanism for producing soft synthetic leather, a first mounting plate is symmetrically fixed on the top of the base plate and on the side near the cooling roller. A plurality of first guide rollers are rotatably connected between the first mounting plates. The first guide rollers are spaced apart from the cooling roller. The connecting bend and the liquid delivery pipe are both fixed inside the first mounting plate.

[0011] According to the cooling and peeling mechanism for producing soft synthetic leather, a second guide roller rotates between the second mounting plates, and the nozzle is located at the separation point between the synthetic leather and the release paper.

[0012] According to the cooling and peeling mechanism for producing soft synthetic leather, a heat exchanger is also fixed on the top of the base plate, and the liquid delivery pipe is connected to the heat exchanger.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, the gradual cooling through a three-stage cooling roller assembly allows for the uniform release of internal stress in the synthetic leather, preventing material embrittlement or deformation caused by sudden cooling. Furthermore, the refrigerant flows sequentially through the three cooling rollers, with the temperature gradually increasing, achieving stepped utilization of thermal energy. Compared to single-roller cooling, this improves refrigerant circulation efficiency, thereby reducing refrigerant circulation energy consumption.

[0015] 2. Compared with the existing technology, high-pressure air is introduced into the air supply pipe 1, and the nozzle sprays airflow onto the interface between the synthetic leather and the release paper to form an air cushion layer to assist separation and increase the peeling tension to achieve low-damage peeling. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a first-view structural schematic diagram of a cooling and peeling mechanism for the production of soft synthetic leather according to this utility model;

[0018] Figure 2 This is a second-view structural schematic diagram of a cooling and peeling mechanism for the production of soft synthetic leather according to this utility model;

[0019] Figure 3 This is a cross-sectional view of the cooling roller structure of a cooling and peeling mechanism for the production of soft synthetic leather according to this utility model.

[0020] Figure 4 This is a schematic diagram of the soft synthetic leather conveying route structure of a cooling and peeling mechanism for the production of soft synthetic leather according to this utility model.

[0021] Figure 5 This utility model relates to a cooling and peeling mechanism for the production of soft synthetic leather. Figure 1 Enlarged structural diagram at point A in the middle.

[0022] Legend:

[0023] 1. Base plate; 2. Cooling roller; 3. First guide roller; 4. Connecting pipe; 5. Rotary joint; 6. Connecting bend; 7. Infusion pipe; 8. First mounting plate; 9. Heat exchanger; 10. Second mounting plate; 11. Second guide roller; 12. Gas inlet pipe; 13. Nozzle; 14. Take-up roller; 15. Rotary shaft; 16. Motor; 17. Third mounting plate; 18. Insert block; 19. Screw; 20. Rotary drum. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-5This utility model discloses a cooling and peeling mechanism for the production of soft synthetic leather, comprising a base plate 1. First mounting plates 8 are symmetrically fixed to the top of the base plate 1 and near the cooling roller 2. Multiple first guide rollers 3 are rotatably connected between the first mounting plates 8, spaced apart from the cooling rollers 2, to guide the composite belt into contact with the bottom surface of the cooling rollers 2. Connecting bends 6 and infusion pipes 7 are fixed inside the first mounting plates 8. Multiple adjacent cooling rollers 2 are located on the top of the base plate 1. The cooling rollers 2 have a hollow internal structure, with connecting pipes 4 fixed at both ends. A rotary joint 5 is fixed to one end of each connecting pipe 4. The fixed ends of every two adjacent rotary joints 5 are connected via connecting bends 6. The fixed ends of the remaining rotary joints 5 are fixed with infusion pipes 7. One infusion pipe 7 is an inlet pipe connected to an external refrigeration system, and the one near the heat exchanger 9 is a return pipe. These pipes are connected in series via connecting bends 6 to form a closed-loop circulation path. A refrigerant, such as an aqueous ethylene glycol solution, circulates inside the cooling rollers 2.

[0026] The composite belt sequentially passes over the first guide roller 3 and the cooling roller 2, achieving gradient cooling through three stages to uniformly reduce the surface temperature of the synthetic leather. The refrigerant passes through the three cooling rollers 2 sequentially, with its temperature gradually increasing. The composite belt first contacts the higher-temperature cooling roller 2 for pre-cooling, the middle cooling roller 2 provides a gradual cooling transition, and the last cooling roller 2 facilitates final peeling. This progressive cooling through the three-stage cooling roller group ensures uniform release of internal stress in the synthetic leather, preventing material embrittlement or deformation caused by sudden cooling. Furthermore, the sequential flow of the refrigerant through the three cooling rollers 2, with its gradually increasing temperature, achieves stepped utilization of thermal energy. Compared to single-roller cooling, this improves refrigerant circulation efficiency, thereby reducing refrigerant circulation energy consumption.

[0027] An air-blowing peeling assembly is provided between the winding assembly and the cooling roller 2. A second mounting plate 10 is symmetrically fixed on the top of the base plate 1 and on one side of the cooling roller 2. A second guide roller 11 rotates between the second mounting plates 10 to realize the horizontal conveying of the composite leather. The air-blowing peeling assembly includes an air supply pipe 12 fixed between the second mounting plates 10 and a plurality of nozzles 13 uniformly fixed on one side of the air supply pipe 12. The nozzles 13 are arranged facing the cooling roller 2 and are located at the separation point between the synthetic leather and the release paper.

[0028] Release paper separates from synthetic leather at nozzle 13 and is wound onto corresponding take-up rollers 14. High-pressure air is introduced through air pipe 12, and airflow is sprayed from nozzle 13 onto the interface between synthetic leather and release paper to form an air cushion layer to assist separation and increase peeling tension to achieve low-damage peeling.

[0029] Two winding assemblies, one for winding synthetic leather and the other for winding release paper, are located on the top of the base plate 1 and on one side of the cooling roller 2. A third mounting plate 17 is symmetrically fixed to the top of the base plate 1. Each winding assembly includes a shaft 15 rotating inside one of the third mounting plates 17, a rotatable drum 20 mounted on the other third mounting plate 17, a winding roller 14 mounted between the shaft 15 and the drum 20, a motor 16 fixed to the third mounting plate 17, a screw 19 threadedly connected inside the third mounting plate 17, and two square-structured inserts 18 symmetrically fixed to the ends of the winding roller 14. The shaft 15 is fixedly connected to the output shaft of the motor 16. The drum 20 rotates at the end of the screw 19, and a handle is fixed to the other end of the screw 19 for easy rotation. Square slots are provided inside both the drum 20 and the shaft 15 to engage with the inserts 18, enabling power transmission.

[0030] Motor 16 drives shaft 15 to rotate, and winding roller 14 rotates to wind up synthetic leather and release paper. The wound release paper is then rolled up for easy reuse. Winding roller 14 is fixed to shaft 15 and drum 20 via insert block 18. When changing rollers, rotating screw 19 disengages the connection between drum 20 and insert block 18, allowing the wound roller 14 to be disassembled and replaced. The operation is simple and convenient for disassembling and assembling winding roller 14.

[0031] A heat exchanger 9 is also fixed on the top of the base plate 1. The liquid delivery pipe 7 is connected to the heat exchanger 9. The refrigerant flows back after passing through the heat exchanger 9 and exchanges heat with the external cooling water to recover heat for preheating the water temperature. It can be used for the front-end PU resin premixing process or other applications.

[0032] Working principle: The composite belt sequentially passes over the first guide roller 3 and the cooling roller 2, achieving gradient cooling through three stages to uniformly reduce the surface temperature of the synthetic leather. The refrigerant passes through the three cooling rollers 2 sequentially, with the temperature gradually increasing. The composite belt first contacts the higher-temperature cooling roller 2 for pre-cooling, the middle cooling roller 2 provides a gradual cooling transition, and the last cooling roller 2 facilitates final peeling. This progressive cooling through the three-stage cooling roller group ensures uniform release of internal stress in the synthetic leather, preventing material embrittlement or deformation caused by sudden cooling. Furthermore, the sequential flow of the refrigerant through the three cooling rollers 2, with its gradually increasing temperature, achieves stepped utilization of thermal energy. Compared to single-roller cooling, this improves refrigerant circulation efficiency, thereby reducing refrigerant circulation energy consumption.

[0033] Release paper separates from synthetic leather at nozzle 13 and is wound onto corresponding take-up rollers 14. High-pressure air is introduced through air pipe 12, and airflow is sprayed from nozzle 13 onto the interface between synthetic leather and release paper to form an air cushion layer to assist separation and increase peeling tension to achieve low-damage peeling.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cooling and peeling mechanism for the production of soft synthetic leather, characterized in that, Includes a base plate (1), the top of which is provided with a plurality of adjacent cooling rollers (2), the interior of which is hollow and both ends are fixed with connecting pipes (4), one end of which is fixed with a rotary joint (5), the fixed ends of every two adjacent rotary joints (5) are connected by a connecting bend (6), the fixed ends of the remaining rotary joints (5) are fixed with a liquid infusion pipe (7), and the cooling rollers (2) are circulated with refrigerant. The bottom plate (1) is provided with two winding assemblies on the top and one side of the cooling roller (2) respectively for winding synthetic leather and release paper. An air-blowing peeling assembly is provided between the winding assembly and the cooling roller (2).

2. The cooling and peeling mechanism for producing soft synthetic leather according to claim 1, characterized in that, The bottom plate (1) is symmetrically fixed with a second mounting plate (10) on top and on one side of the cooling roller (2). The air-blowing stripping assembly includes an air supply pipe (12) fixed between the second mounting plates (10) and a plurality of nozzles (13) uniformly fixed on one side of the air supply pipe (12). The nozzles (13) are arranged facing the cooling roller (2).

3. The cooling and peeling mechanism for producing soft synthetic leather according to claim 2, characterized in that, The top of the base plate (1) is symmetrically fixed with a third mounting plate (17). The winding assembly includes a rotating shaft (15) that rotates inside one of the third mounting plates (17), a rotating drum (20) that is mounted on the other third mounting plate (17) and is rotatable, a winding roller (14) that is mounted between the rotating shaft (15) and the rotating drum (20), and a motor (16) fixed on the third mounting plate (17). The rotating shaft (15) is fixedly connected to the output shaft of the motor (16).

4. The cooling and peeling mechanism for producing soft synthetic leather according to claim 3, characterized in that, The winding assembly also includes a screw (19) threaded inside the third mounting plate (17) and two square-structured inserts (18) symmetrically fixed at the ends of the winding roller (14). The drum (20) rotates at the end of the screw (19). Both the drum (20) and the shaft (15) have square slots inside that engage with the inserts (18).

5. A cooling and peeling mechanism for producing soft synthetic leather according to claim 4, characterized in that, The bottom plate (1) is symmetrically fixed with a first mounting plate (8) on the top and near the cooling roller (2). Multiple first guide rollers (3) are rotatably connected between the first mounting plates (8). The first guide rollers (3) are spaced apart from the cooling roller (2). The connecting bend (6) and the infusion pipe (7) are both fixed inside the first mounting plate (8).

6. A cooling and peeling mechanism for producing soft synthetic leather according to claim 5, characterized in that, A second guide roller (11) rotates between the second mounting plates (10), and the nozzle (13) is located at the separation point between the synthetic leather and the release paper.

7. A cooling and peeling mechanism for producing soft synthetic leather according to claim 6, characterized in that, A heat exchanger (9) is also fixed on the top of the base plate (1), and the infusion pipe (7) is connected to the heat exchanger (9).

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