Tension-free pre-shrinking machine

Abstract

The utility model relates to the technical field of textile machinery equipment, in particular to a tension-free preshrinking machine which comprises a machine frame, and a cloth inlet and a cloth outlet are formed in the two ends of the machine frame respectively. An annular conveying belt used for supporting gray cloth to move from the advancing opening to the cloth outlet and a heating steam coil used for preshrinking the gray cloth are arranged in the rack, a preshrinking channel is jointly formed between the heating steam coil and the annular conveying belt, a driving roller is arranged at one end in the rack, a driven roller is arranged at the other end in the rack, and the driving roller and the driven roller are arranged on the rack. A first driving mechanism used for providing power for the driving rollers to drive the annular conveying belt to move circularly is arranged in the machine frame, a plurality of dragging rollers used for eliminating tension of the annular conveying belt are further arranged in the machine frame, and a second driving mechanism used for independently driving the dragging rollers to work is further arranged in the machine frame. The utility model aims to pre-shrink the gray cloth and loosen the cloth surface of the gray cloth so that the cloth surface effect is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery and equipment, in particular to a tension-free preshrinking machine. Background Art

[0002] In the textile industry, pre-shrinkage is an important process in the pre-treatment of grey cloth. Its main purpose is to shrink the cloth by heating and humidifying, thereby eliminating the internal stress generated during the weaving process, making the cloth surface smoother, and improving the dimensional stability in the subsequent processing process.

[0003] However, it is found that most of the pre-shrinking machines on the market use a single-point drive system to move the grey cloth, which can easily lead to uneven tension distribution on the conveyor belt, thereby causing stretching or deformation of the grey cloth, affecting the pre-shrinking effect, and causing the cloth to fail to reach the expected flatness. Utility Model Content

[0004] In order to solve the problems in the above background technology, the utility model provides a tension-free preshrinking machine.

[0005] The solution adopted by the utility model to solve the technical problem is: a tension-free preshrinking machine, including a frame, wherein two ends of the frame are respectively provided with a cloth inlet and a cloth outlet, an annular conveyor belt for supporting the grey cloth to move from the inlet to the outlet and a heating steam coil for preshrinking the grey cloth are arranged inside the frame, a preshrinking channel is formed between the heating steam coil and the annular conveyor belt, a driving roller is arranged at one end of the frame, and a passive roller is arranged at the other end, a first driving mechanism for providing power to the driving roller to drive the annular conveyor belt to move in a circular manner is arranged inside the frame, a plurality of dragging rollers for eliminating the tension of the annular conveyor belt are also arranged inside the frame, and a second driving mechanism for driving each dragging roller to work individually is also arranged inside the frame.

[0006] By adopting the above technical solution, the driving force can be dispersed to each drag roller to ensure a more uniform tension distribution on the entire conveyor belt, and the steam from the heating steam heat pipe can quickly and evenly penetrate into the grey cloth for efficient pre-shrinkage.

[0007] Furthermore, a plurality of unfolding rollers for unfolding the grey cloth are arranged at the cloth inlet.

[0008] By adopting the above technical solution, the cloth with severe curling edges can be unfolded to better allow steam to bake.

[0009] Furthermore, a cloth outlet is provided at the cloth outlet for collecting the pre-shrunk grey cloth.

[0010] By adopting the above technical solution, the cloth discharging rack can neatly collect the pre-shrunk grey cloth to avoid random accumulation or scattering of the cloth.

[0011] Furthermore, multiple layers of pre-shrinkage channels are arranged in the frame, and adjacent pre-shrinkage channels are connected.

[0012] By adopting the above technical solution and providing multiple layers of interconnected preshrinkage channels, the length of the overall preshrinkage channel can be increased, and the preshrinkage path actually acting on the grey cloth can be extended without increasing the overall length of the preshrinkage machine.

[0013] Furthermore, the heating steam coil is located above the pre-shrinkage channel, and the annular conveyor belt is located below the pre-shrinkage channel.

[0014] By adopting the above technical solution, it is possible to prevent condensation drops from dripping and damaging the heating steam coil.

[0015] Furthermore, a plurality of groups of moving wheels for supporting the frame to move are arranged at the bottom of the frame.

[0016] By adopting the above technical solution, the shrinking machine can be easily moved in the workshop to meet the needs of different production layouts.

[0017] In summary, the beneficial effects of the utility model are as follows: the utility model realizes multi-point drive by arranging multiple independently driven drag rollers under the circular conveyor belt, so as to disperse the driving force to each drag roller and avoid uneven tension. An unfolding roller is arranged at the advancement port to unfold the severely curled grey cloth, which is convenient for subsequent preshrinking. The heating steam coil located above the circular conveyor belt forms a preshrinking channel with it, and the steam from the heating steam heat pipe can quickly and evenly penetrate into the grey cloth for efficient preshrinking.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of this embodiment;

[0020] Figure 2 It is a schematic diagram of the heating steam coil and the unwinding roller of this embodiment;

[0021] Figure 3 FIG. 4 is a schematic structural diagram of the second embodiment.

[0022] In the figure: 1. frame; 11. cloth inlet; 12. cloth outlet; 13. endless conveyor belt; 2. heating steam coil; 3. pre-shrinkage channel; 41. driving roller; 42. passive roller; 43. first driving mechanism; 51. drag roller; 52. second driving mechanism; 6. unfolding roller; 7. cloth outlet frame; 8. moving wheel. DETAILED DESCRIPTION

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0024] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0025] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0026] like Figure 1 to Figure 2 As shown, a tension-free preshrinking machine comprises a frame 1, wherein the frame 1 of this embodiment is provided with a cloth inlet 11 and a cloth outlet 12 at both ends respectively, an annular conveyor belt 13 for supporting the grey cloth to move from the inlet to the outlet 12 and a heating steam coil 2 for preshrinking the grey cloth are provided inside the frame 1, a preshrinking channel 3 is formed between the heating steam coil 2 and the annular conveyor belt 13, a driving roller 41 is provided at one end inside the frame 1, and a passive roller 42 is provided at the other end, a first driving mechanism 43 for providing power to the driving roller 41 to drive the annular conveyor belt 13 to move in a circular manner is provided inside the frame 1, a plurality of dragging rollers 51 for eliminating the tension of the annular conveyor belt 13 are provided inside the frame 1, and a second driving mechanism 52 for driving each dragging roller 51 to work individually is also provided inside the frame 1.

[0027] The two ends of the frame 1 of this embodiment are respectively provided with a cloth inlet 11 and a cloth outlet 12. The grey cloth enters the frame 1 from the cloth inlet 11, is transported and moved by the annular conveyor belt 13 and passes through the heating steam coil 2. The steam from the heating steam heat pipe quickly penetrates into the grey cloth, is efficiently pre-shrinked and then exits from the cloth outlet 12. The pre-shrinkage channel 3 formed between the heating steam coil 2 and the annular conveyor belt 13 ensures that the grey cloth can be heated evenly over the entire width and length. An active driving roller 41 is installed near the cloth outlet 12 inside the frame 1, and a passive roller 42 is installed near the cloth inlet 11. The annular conveyor belt 13 is made of nylon mesh and is wound around the driving roller 41 and the passive roller 42 to form a closed loop. The active roller is driven separately by the first driving mechanism 43 to provide power to drive the annular conveyor belt 13 to move in a circular motion, while the passive roller 42 does not directly provide driving force. In addition, a plurality of drag rollers 51 individually driven by a second driving mechanism 52 are arranged along the transmission direction below the circular conveyor belt 13. The spacing between the drag rollers 51 is set according to the length of the conveyor belt and the required load-bearing capacity to realize multi-point drive, so that the driving force can be dispersed to each drag roller 51. The speed of each drag roller 51 is controlled by the control system, so that the tension at different positions on the conveyor belt can be accurately adjusted to ensure a more uniform tension distribution on the entire conveyor belt.

[0028] like Figure 1 and Figure 2 As shown, a plurality of unfolding rollers 6 for unfolding the grey cloth are arranged at the cloth inlet 11 of this embodiment. The unfolding rollers 6 are mounted on a solid support structure to ensure that they remain stable during operation and will not be displaced or deformed due to force. The unfolding rollers 6 can be controlled by appropriate tension to flatten the grey cloth before entering the pre-shrinking channel 3 to avoid wrinkles and folds, so as to better allow the heating steam coil 2 to perform baking.

[0029] like Figure 1 As shown, a cloth outlet 12 of this embodiment is provided with a cloth outlet rack 7 for collecting the pre-shrunk grey cloth. The cloth outlet rack 7 is connected to the cloth outlet 12 of the pre-shrunk machine and is composed of a solid metal frame that can bear the weight of the pre-shrunk grey cloth. A support roller is provided on it to support and guide the pre-shrunk grey cloth so that it can be smoothly stacked and collected to a designated position.

[0030] like Figure 3As shown, in another embodiment, multiple layers of pre-shrinkage channels 3 are provided in the frame 1, and each adjacent pre-shrinkage channel 3 is connected. In the frame 1 of the second embodiment, three layers of heating steam coils 2 and conveyor belts connected up and down are provided, and the above-mentioned tension-free roller group is provided under each conveyor belt. Each layer of pre-shrinkage channels 3 is connected. When the grey cloth enters the first layer of pre-shrinkage channel 3 from the cloth inlet 11, it is baked by the first layer of heating steam coils 2, and then enters the second layer of pre-shrinkage channel 3 below, and then turns back to enter the third layer of pre-shrinkage channel 3 for pre-shrinkage baking, and then flows out from the cloth outlet 12 connected to the third layer of pre-shrinkage channel 3 to complete pre-shrinkage. It is achieved that the pre-shrinkage path actually acting on the grey cloth is extended without significantly expanding the physical size of the pre-shrinkage machine, and the pre-shrinkage machine is compact and its internal space is fully utilized.

[0031] like Figure 1 As shown, the heating steam coil 2 of this embodiment is located above the pre-shrinkage channel 3, and the annular conveyor belt 13 is located below the pre-shrinkage channel 3. The heating steam coil 2 is located above the pre-shrinkage channel 3 and parallel to the annular conveyor belt 13 below, and can heat the grey cloth evenly from top to bottom to prevent the heating steam coil 2 from being damaged by condensation beads dripping.

[0032] Figure 1 As shown, the bottom of the frame 1 of this embodiment is provided with several groups of moving wheels 8 for supporting the frame 1 to move, so that the preshrinking machine can be easily moved in the workshop to meet the needs of different production layouts.

[0033] In summary, the beneficial effects of this embodiment are as follows: This embodiment realizes multi-point drive by setting a plurality of individually driven drag rollers 51 below the endless conveyor belt 13, so as to disperse the driving force to each drag roller 51 and avoid uneven tension. An unfolding roller 6 is set at the advancement port to unfold the grey cloth with severe curling, which is convenient for subsequent preshrinking. The heating steam coil 2 located above the endless conveyor belt 13 forms a preshrinkage channel 3 with it, and the steam from the heating steam heat pipe can quickly and evenly penetrate into the grey cloth for efficient preshrinkage. The multi-layer preshrinkage channel 3 is set to extend the preshrinkage path actually acting on the grey cloth without expanding the physical size of the preshrinking machine.

[0034] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A tension-free preshrinking machine, comprising a frame, characterized in that: A cloth inlet and a cloth outlet are respectively provided at both ends of the frame, an endless conveyor belt for supporting the grey cloth to move from the inlet to the outlet and a heating steam coil for pre-shrinking the grey cloth are provided inside the frame, a pre-shrinkage channel is formed between the heating steam coil and the endless conveyor belt, a driving roller is provided at one end of the frame, and a passive roller is provided at the other end, a first driving mechanism for providing power to the driving roller to drive the endless conveyor belt to move in a circular motion is provided inside the frame, a plurality of dragging rollers for eliminating the tension of the endless conveyor belt are also provided inside the frame, and a second driving mechanism for driving each dragging roller to work individually is also provided inside the frame.

2. A tension-free preshrinking machine according to claim 1, characterized in that: The cloth inlet is provided with a plurality of unfolding rollers for unfolding the grey cloth.

3. A tension-free preshrinking machine according to claim 1, characterized in that: The cloth outlet is provided with a cloth outlet rack for collecting the pre-shrunk grey cloth.

4. A tension-free preshrinking machine according to claim 1, characterized in that: Multiple layers of pre-shrinkage channels are arranged in the frame, and adjacent pre-shrinkage channels are connected.

5. The tension-free preshrinking machine according to claim 1, characterized in that: The heating steam coil is located above the pre-shrinkage passage, and the annular conveyor belt is located below the pre-shrinkage passage.

6. The tension-free preshrinking machine according to claim 1, characterized in that: The bottom of the frame is provided with a plurality of groups of moving wheels for supporting the frame to move.

Images