An automatic cloth unloading method and device for an open-width cloth coiling machine

Abstract

The present invention relates to the technical field of knitting, and provides an automatic cloth unloading method and device for an open-width cloth winding machine, including a controller, a frame, a cloth clamping roller, a cloth winding roller, a first swing arm, a second swing arm, a first driving mechanism, a second driving mechanism, a third driving mechanism and a cloth winding roller lifting mechanism. The cloth winding roller lifting mechanism includes a first sliding groove, a second sliding groove, a first pushing block, a second pushing block, a first lifting mechanism and a second lifting mechanism. The first driving mechanism and the second driving mechanism respectively drive the first swing arm and the second swing arm to retract to the frame so that the free ends of the first swing arm and the second swing arm respectively receive the two ends of the roller shaft of the cloth winding roller that are lifted and moved out of the first sliding groove and the second sliding groove. The first driving mechanism and the second driving mechanism also respectively push the first swing arm and the second swing arm away from the frame to smoothly send out the received cloth winding roller from the frame. The cloth unloading device of the open-width cloth winding machine of the present invention can unload the cloth winding roller at any time, occupies a small space, and unloads the cloth safely and smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of knitting, and in particular to an automatic cloth unloading method and a device for an open-width cloth winding machine. Background Art

[0002] In the textile operation process, after the knitting machine finishes weaving, the cloth must be pulled to a cloth winding machine, and the cloth winding machine is used to wind the cloth onto a cloth winding roller, and then the cloth winding roller is taken out after the cloth winding is completed. However, the cloth winding machine of the prior art requires manual opening of the baffle when the cloth winding roller has rolled up the cloth so that it can roll it onto the cloth dropping rail, and because the cloth winding roller is not light after the cloth winding is completed, on the one hand, it is very easy to cause the baffle that has been working for a long time to be difficult to effectively block the cloth winding roller after the cloth winding is completed, and on the other hand, manually opening and closing the baffle has certain safety hazards to the personal safety of personnel, and the cloth winding process is too time-consuming and labor-intensive. The cloth-pushing device of the cloth-winding machine has been developed for this purpose. For example, the Chinese patent document: CN201922033298.7 discloses a new cloth-pushing device suitable for the cloth-winding machine, whose structure includes: a support plate, a transition roller, a cloth-dropping rail, a cloth-winding roller, a lower rail, and a cloth-pushing device. The support plate is arranged above one side of the transition roller, and the transition roller is transmission-connected to the cloth-winding roller. The cloth-winding roller is installed on the lower rail. When the motor on the cloth-pushing device is energized, the active sprocket wheel rotates mechanically, and the passive sprocket wheel rotates with the action of the belt, so that the pushing plate rotates counterclockwise. During the rotation, the connecting block is pushed to one side under the action of the embedded rod, so that the baffle is pushed to one side by the connecting block. The cloth-winding machine can rotate the pushing plate counterclockwise by energizing the motor, so that the connecting block pushes the baffle to one side, so that the cloth-winding roller at the top of the lower rail loses its limit and detaches from the lower rail, and finally rolls onto the cloth-dropping rail. However, it requires a large space for the entire cloth-dropping rail, and the cloth-dropping roller is forced out and can only be pushed out after the cloth-dropping roller has completed rolling the cloth. If the cloth-dropping roller has not completed rolling the entire roll of cloth, the rolling diameter is not large enough and cannot be pushed out automatically. When the rolling diameter of the cloth-dropping roller is not reached, the cloth cannot be unloaded. At the same time, when the cloth-dropping roller is pushed down to the cloth-dropping rail, there is still a certain safety hazard to the personal safety of the staff when the cloth-dropping roller rolls down due to the pushing force. Summary of the invention

[0003] Therefore, in view of the above problems, the present invention proposes an automatic cloth unloading method and device for an open-width cloth winding machine, which has a simple and reasonable structure, can unload cloth from the cloth winding roller at any time, occupies a small space, and unloads cloth safely and smoothly.

[0004] To solve this technical problem, the present invention adopts the following solution: An automatic cloth unloading method for an open-width cloth coiling machine. On the inner walls of the two side plates of the frame of the open-width cloth coiling machine, first chutes and second chutes are symmetrically arranged at corresponding positions at both ends of the roller shaft of the cloth coiling roller. Both the first chute and the second chute are provided with longitudinal slots for lifting the roller shaft of the cloth coiling roller, and lifting blocks that can be synchronously lifted or lowered from both ends of the roller shaft of the cloth coiling roller are arranged in the longitudinal slots of the first chute and the second chute; Two movable swing arms that can respectively receive both ends of the roller shaft of the cloth coiling roller are arranged on both sides of the frame. One end of the two movable swing arms is hinged to the bottom of the frame, and receiving grooves for receiving the roller shaft of the cloth coiling roller are respectively arranged at the free ends of the two movable swing arms. By retracting the two movable swing arms into the frame, the free ends of the two movable swing arms are made to top against the tops of the longitudinal slots of the first chute and the second chute to receive the roller shaft of the cloth coiling roller, or after the two movable swing arms receive the roller shaft of the cloth coiling roller, they are unfolded outward from the frame to send the cloth coiling roller out of the frame of the cloth coiling machine. A sensor is arranged on the frame to detect the coil diameter of the cloth coiling roller or the position of the roller shaft of the cloth coiling roller and send it to the control system of the cloth coiling machine;

[0005] During automatic cloth unloading, the control system controls the lifting blocks to synchronously lift both ends of the roller shaft of the cloth coiling roller out of the tops of the longitudinal slots of the first chute and the second chute so that both ends of the roller shaft of the cloth coiling roller fall into the receiving grooves of the two movable swing arms. Then the control system synchronously controls the two movable swing arms to unfold outward from the frame to send the cloth coiling roller out of the frame of the cloth coiling machine, completing the automatic cloth unloading of the cloth coiling machine;

[0006] The control system can start automatic cloth unloading by setting the detected coil diameter size to a preset value, or the control system can start automatic cloth unloading at any time by operating the control system.

[0007] An automatic cloth unloading device for an open-width cloth coiling machine, comprising a controller, a frame, a cloth clamping roller and a cloth coiling roller arranged on the frame. The cloth clamping roller clamps the cloth and sends it to the cloth coiling roller, and the cloth coiling roller rotates to wind up the cloth. It further includes a displacement sensor, a first swing arm, a second swing arm, a first driving mechanism, a second driving mechanism, a third driving mechanism and a cloth coiling roller lifting mechanism. The cloth coiling roller lifting mechanism includes a first chute, a second chute, a first pushing block, a second pushing block, a first lifting mechanism and a second lifting mechanism. The first chute and the second chute are respectively arranged on the inner walls of both sides of the frame, and the first chute and the second chute are provided with longitudinal slots for lifting the roller shaft of the cloth coiling roller. The first pushing block and the second pushing block are respectively arranged in the longitudinal slots of the first chute and the second chute for lifting the two ends of the roller shaft of the cloth coiling roller out of the first chute and the second chute or lowering to make the roller shaft of the cloth coiling roller return to the cloth winding position. The first lifting mechanism and the second lifting mechanism are respectively connected to and drive the first pushing block and the second pushing block to lift and lower. The third driving mechanism is connected to and drives the first lifting mechanism and the second lifting mechanism. The frame extends outwards respectively at the lower parts on both sides of the cloth coiling roller outlet and is provided with support rods. One end of the first swing arm and one end of the second swing arm are respectively hinged to the free ends of the support rods on both sides of the frame. The free ends of the first swing arm and the second swing arm are provided with roller shaft placement slots for the cloth coiling roller. The first driving mechanism and the second driving mechanism are respectively arranged on both sides of the upper part of the frame, and the output shafts of the first driving mechanism and the second driving mechanism are respectively hinged to the middle parts of the first swing arm and the second swing arm. The first driving mechanism and the second driving mechanism respectively drive the first swing arm and the second swing arm to retract to the frame so that the free ends of the first swing arm and the second swing arm respectively receive the two ends of the roller shaft of the cloth coiling roller lifted out of the first chute and the second chute. The first driving mechanism and the second driving mechanism also respectively push the first swing arm and the second swing arm away from the frame so that the cloth coiling roller received on the free ends of the first swing arm and the second swing arm is smoothly sent out of the frame. The displacement sensor is arranged on the frame to detect whether the roller shaft of the cloth coiling roller falls into the roller shaft placement slot of the first swing arm or the second swing arm and send the detection information to the controller. The first driving mechanism, the second driving mechanism and the third driving mechanism are all connected to and controlled by the controller.

[0008] Further, both the first driving mechanism and the second driving mechanism are oil cylinders or air cylinders.

[0009] Further, the side groove edges of the first chute and the second chute facing the cloth coiling roller outlet are lower than the other side groove edges. The roller shaft placement slots for the cloth coiling roller on the free ends of the first swing arm and the second swing arm can respectively be placed on the lower groove edges of the first chute and the second chute for receiving the two ends of the roller shaft of the cloth coiling roller lifted out of the first chute and the second chute.

[0010] Furthermore, the upper surfaces of the first pushing block and the second pushing block are respectively inclined upwards from the lower groove edges of the first chute and the second chute to the higher groove edges.

[0011] Further, it further includes a cloth cutting mechanism. A slide rail is installed on two support rods of the frame. The cloth cutting mechanism is movably arranged on the slide rail to cut the cloth after the cloth roll is moved out.

[0012] Further, the cloth roll lifting mechanism further includes a synchronous wheel shaft. The two ends of the synchronous wheel shaft are respectively rotatably penetrated through the two side surfaces of the frame, and synchronous wheels are respectively arranged at the two ends of the synchronous wheel shaft. The first lifting mechanism and the second lifting mechanism are both synchronous wheel groups longitudinally arranged on the side of the frame. The synchronous belts of the first lifting mechanism and the second lifting mechanism respectively bypass the rotating wheels at one end of the synchronous wheel shaft. The third driving mechanism is connected to and drives the synchronous wheel shaft to rotate, and then drives the synchronous wheel groups of the first lifting mechanism and the second lifting mechanism to rotate synchronously.

[0013] Furthermore, the third driving mechanism is a servo motor.

[0014] Further, the third driving mechanism is two servo motors, and the two servo motors are respectively connected to and drive the first lifting mechanism and the second lifting mechanism.

[0015] By adopting the above technical scheme, the beneficial effect of the present invention is that: by arranging the cloth roll lifting mechanism, the cloth roll can be lifted up from the first slide slot and the second slide slot at any time or according to the set diameter of the cloth roll, so that the two ends of the cloth roll shaft fall into the cloth roll shaft placement grooves of the first swing arm and the second swing arm, and then the first driving mechanism and the second driving mechanism drive the first swing arm and the second swing arm to safely and smoothly send the cloth roll away from the frame, that is, the first swing arm and the second swing arm are unfolded to support the two ends of the cloth roll shaft of the cloth roll waiting for the workers to use engineering vehicles or forklifts to take away the cloth roll, and after the cloth is unloaded, the empty The cloth-rolling roller is placed on the cloth-rolling roller shaft placing groove of the first swing arm and the second swing arm. At this time, the first driving mechanism and the second driving mechanism operate to retract the free ends of the first swing arm and the second swing arm into the frame, so that the cloth-rolling roller falls into the first slide groove and the second slide groove, and the cloth-rolling roller lifting mechanism sends the cloth-rolling roller back to the original position to rewind the cloth. During the whole process, the cloth-rolling roller moves smoothly, and there is no need to set component structures such as cloth-dropping rails. The structure is simple and reasonable, the cloth-rolling roller can be unloaded at any time, the space occupied is small, the cloth-unloading is safe and stable, and the cloth-unloading can be controlled at any time for smooth and safe cloth-unloading without considering the rolling diameter of the cloth-rolling roller. Through further settings, that is, the low groove sides and high groove sides of the first slide slot and the second slide slot are set to facilitate the first swing arm and the second swing arm to receive the roller shaft of the cloth winding roller, and the upper surfaces of the first push block and the second push block are respectively inclined upward from the low groove sides of the first slide slot and the second slide slot to the high groove sides, so that the roller shaft of the cloth winding roller can be more conveniently pushed into the cloth winding roller shaft placement groove at the free ends of the first swing arm and the second swing arm. The setting of the cloth cutting mechanism facilitates automatic separation of the cloth winding roller and the wound cloth, and the setting of the sensor facilitates the user to quickly set the roll diameter size and then automatically detect and push out the cloth winding roller for unloading the cloth. The setting of the synchronous wheel shaft enables the first lifting mechanism and the second lifting mechanism to achieve synchronous drive with one motor, thereby reducing the cost and being widely promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the unfolded three-dimensional structure of the cloth winding roller according to an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the cloth winding roller of the embodiment of the present invention being retracted to the frame;

[0018] Figure 3 It is a schematic side view of the structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0020] refer to Figures 1-3, preferably, the automatic cloth unloading method and device for a fabric opening and winding machine according to the present invention include a controller, a frame 10, a cloth clamping roller 2, a cloth winding roller 3, a first swing arm 4, a second swing arm 5, a first driving mechanism 6, a second driving mechanism 7, a third driving mechanism 8, a cloth cutting mechanism 9, a displacement sensor, and a cloth winding roller lifting mechanism. The cloth clamping roller 2 clamps the fabric and sends it to the cloth winding roller 3. The cloth winding roller 3 rotates under the drive of a driving roller 11 to wind the fabric. The cloth winding roller lifting mechanism includes a first chute 101, a second chute, a first pushing block 102, a second pushing block, a first lifting mechanism 103, a second lifting mechanism, and a synchronous pulley shaft 104. The first chute 101 and the second chute are respectively arranged on the inner walls of both sides of the frame 10, and the first chute 101 and the second chute are provided with longitudinal slots 1011 for the roller shaft of the cloth winding roller 3 to be lifted. The first pushing block 102 and the second pushing block are respectively arranged in the longitudinal slots 1011 of the first chute 101 and the second chute to lift the two ends of the roller shaft of the cloth winding roller 3 out of the first chute 101 and the second chute or lower it to return the roller shaft of the cloth winding roller 3 to the fabric winding position. The first lifting mechanism 103 and the second lifting mechanism are respectively connected to and drive the first pushing block 102 and the second pushing block to lift and lower. The two ends of the synchronous pulley shaft 104 are respectively rotatably penetrated through the two side surfaces of the frame 10, and synchronous pulleys are respectively arranged at the two ends of the synchronous pulley shaft 104. The first lifting mechanism 103 and the second lifting mechanism are both synchronous pulley groups longitudinally arranged on the sides of the frame 10. The synchronous belts of the first lifting mechanism 103 and the second lifting mechanism respectively wind around the rotating pulleys at one end of the synchronous pulley shaft 104. The third driving mechanism 8 is a servo motor. The third driving mechanism 8 is connected to and drives the synchronous pulley shaft to rotate, thereby driving the synchronous pulley groups of the first lifting mechanism 103 and the second lifting mechanism to rotate synchronously. The frame 10 extends outwardly respectively at the lower parts on both sides of the outlet of the cloth winding roller 3 to be provided with support rods 1001. A slide rail 1002 is arranged on the two support rods 1001 of the frame 10. The cloth cutting mechanism 9 is movably arranged on the slide rail 1001 in a reciprocating manner to cut the fabric after the cloth winding roller 3 is removed. One end of the first swing arm 4 and one end of the second swing arm 5 are respectively hinged to the free ends of the support rods 1001 on both sides of the frame 10. Both the first swing arm 4 and the second swing arm 5 are arc-shaped. A roller shaft placement groove for the cloth winding roller is provided at the free end of the first swing arm 4 and the second swing arm 5. The first driving mechanism 6 and the second driving mechanism 7 are both oil cylinders. The first driving mechanism 6 and the second driving mechanism 7 are respectively arranged on both sides of the upper part of the frame 10, and the output shafts of the first driving mechanism 6 and the second driving mechanism 7 are respectively hinged to the middle parts of the first swing arm 4 and the second swing arm 5. The first driving mechanism 6 and the second driving mechanism 7 respectively drive the first swing arm 4 and the second swing arm 5 to retract to the frame 10 so that the free ends of the first swing arm 4 and the second swing arm 5 respectively receive the two ends of the roller shaft of the cloth winding roller 3 lifted out of the first chute 101 and the second chute,The first drive mechanism 6 and the second drive mechanism 7 also push the first swing arm 4 and the second swing arm 5 away from the frame 10 respectively so that the cloth roller 3 supported on the free ends of the first swing arm 4 and the second swing arm 5 can be smoothly sent out of the frame 10. The sensor is arranged on the frame 10 to detect the rolling diameter of the cloth roller 3 and send the detection information to the controller. The displacement sensor is arranged on the frame 10 to detect whether the roller shaft of the cloth roller 3 falls into the roller shaft placement groove of the first swing arm 4 and send the detection information to the controller. The first drive mechanism 6, the second drive mechanism 7 and the third drive mechanism 8 are all connected and controlled by the controller.

[0021] Among them, the groove edges of the first slide groove 101 and the second slide groove on one side facing the outlet of the cloth rolling roller 3 are lower than the groove edges on the other side, and the cloth rolling roller shaft placement grooves on the free ends of the first swing arm 4 and the second swing arm 5 can be respectively placed on the low groove edges of the first slide groove 101 and the second slide groove to receive the two ends of the cloth rolling roller shaft 3 lifted up and away from the first slide groove 101 and the second slide groove, and the upper surfaces of the first push block 102 and the second push block are respectively inclined upward from the low groove edges of the first slide groove 101 and the second slide groove to the high groove edges.

[0022] In the above embodiment, the first driving mechanism and the second driving mechanism can also be cylinders, and the third driving mechanism can also be set as two servo motors, and the two servo motors can be respectively connected to and drive the first lifting mechanism and the second lifting mechanism. In the above embodiment, the third driving mechanism is connected to and drives the synchronous wheel set of the first lifting mechanism to rotate, and then drives the synchronous wheel set of the second lifting mechanism to rotate through the synchronous wheel shaft, or the third driving mechanism is connected to and drives the synchronous wheel set of the second lifting mechanism to rotate, and then drives the synchronous wheel set of the first lifting mechanism to rotate through the synchronous wheel shaft; the outer groove edge of the cloth roller shaft placement groove on the free end of the first swing arm and the second swing arm is higher than the inner groove edge, and the outer groove edge of the cloth roller shaft placement groove on the free end of the first swing arm and the second swing arm is against the high groove edge of the first slide groove and the second slide groove, so as to strengthen the prevention of the cloth roller shaft from being offset when the cloth roller is deployed at the first swing arm and the second swing arm.

[0023] The invention discloses an automatic cloth unloading method for an open-width cloth winding machine, wherein a first slide groove and a second slide groove are symmetrically arranged at corresponding positions at the two ends of a cloth winding roller shaft on the inner walls of the two side plates of the frame of the open-width cloth winding machine, the first slide groove and the second slide groove are both provided with longitudinal slots for lifting the cloth winding roller shaft, and lifting blocks which can be synchronously lifted or lowered from the two ends of the cloth winding roller shaft are arranged in the longitudinal slots of the first slide groove and the second slide groove; two movable swing arms which can respectively receive the two ends of the cloth winding roller shaft are arranged on both sides of the frame, and the two movable swing arms are arranged on both sides of the frame. One end of the swing arm is hinged at the bottom of the frame, and the free ends of the two movable swing arms are respectively provided with receiving grooves for receiving the roller shaft of the cloth rolling roller. The two movable swing arms are retracted into the frame so that the free ends of the two movable swing arms are pressed against the top of the longitudinal slots of the first slide slot and the second slide slot to receive the roller shaft of the cloth rolling roller, or the two movable swing arms receive the roller shaft of the cloth rolling roller and then expand outward from the frame to send the cloth rolling roller out of the cloth rolling machine frame. A sensor is arranged on the frame to detect the rolling diameter of the cloth rolling roller or the position of the roller shaft of the cloth rolling roller and send it to the control system of the cloth rolling machine;

[0024] When the cloth is unloaded automatically, the control system controls the lifting block to synchronously lift the two ends of the cloth roller shaft out of the longitudinal slot tops of the first slide and the second slide, so that the two ends of the cloth roller shaft fall into the receiving slots of the two movable swing arms, and the control system then synchronously controls the two movable swing arms to expand outwards of the frame to send the cloth roller out of the cloth rolling machine frame, thus completing the automatic unloading of the cloth rolling machine;

[0025] The control system can start the automatic cloth unloading by setting the detected roll diameter size to a preset value, or the control system can start the automatic cloth unloading at any time by manipulating the control system.

[0026] In the above method, the first slide slot and the second slide slot can also be provided with a low slot side and a high slot side, and the side of the low slot side close to the outlet of the cloth rolling roller of the frame is the low slot side. The low slot side and the high slot side are provided to facilitate the two movable swing arms to receive the roller shaft of the cloth rolling roller, and the upper surfaces of the two lifting blocks are respectively inclined upward from the low slot side of the first slide slot and the second slide slot to the high slot side, so that the roller shaft of the cloth rolling roller can be more conveniently pushed into the receiving slot at the free end of the two movable swing arms, and a cloth cutting mechanism can also be added at the outlet of the cloth rolling roller of the frame. The setting of the cloth cutting mechanism facilitates the automatic separation of the cloth rolling roller and the rolled cloth, and the two lifting blocks can be synchronously driven and lifted by adding a synchronous wheel shaft and using one motor, thereby reducing the cost.

[0027] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An automatic cloth unloading method for a fabric spreading and winding machine, characterized in that: On the inner walls of the two side plates of the frame of the fabric spreading and winding machine, first chutes and second chutes are symmetrically arranged corresponding to both ends of the roller shaft of the fabric winding roller. Both the first chute and the second chute are provided with longitudinal slots for lifting the roller shaft of the fabric winding roller, and lifting blocks that can be synchronously lifted or lowered from both ends of the roller shaft of the fabric winding roller are arranged in the longitudinal slots of the first chute and the second chute; on both sides of the frame, two movable swing arms that can respectively receive both ends of the roller shaft of the fabric winding roller are arranged. One end of the two movable swing arms is hinged to the bottom of the frame, and receiving grooves for receiving the roller shaft of the fabric winding roller are respectively arranged at the free ends of the two movable swing arms. By retracting the two movable swing arms into the frame, the free ends of the two movable swing arms are abutted against the tops of the longitudinal slots of the first chute and the second chute to receive the roller shaft of the fabric winding roller, or after the two movable swing arms receive the roller shaft of the fabric winding roller, they are unfolded outward from the frame to send the fabric winding roller out of the frame of the fabric spreading and winding machine. A sensor is arranged on the frame to detect the winding diameter of the fabric winding roller or the position of the roller shaft of the fabric winding roller and send it to the control system of the fabric spreading and winding machine; During automatic cloth unloading, the control system controls the lifting blocks to synchronously lift both ends of the roller shaft of the fabric winding roller out of the top ends of the longitudinal slots of the first chute and the second chute so that both ends of the roller shaft of the fabric winding roller fall into the receiving grooves of the two movable swing arms. Then the control system synchronously controls the two movable swing arms to unfold outward from the frame to send the fabric winding roller out of the frame of the fabric spreading and winding machine, completing the automatic cloth unloading of the fabric spreading and winding machine; The control system can start automatic cloth unloading by setting the detected winding diameter size to a preset value, or the control system can start automatic cloth unloading at any time by operating the control system.

2. An automatic cloth unloading device for an open-width cloth coiling machine, comprising a controller, a frame, a cloth clamping roller and a cloth coiling roller arranged on the frame, wherein the cloth clamping roller clamps the cloth and sends it to the cloth coiling roller, and the cloth coiling roller rotates to wind up the cloth, and is characterized in that: It further includes a displacement sensor, a first swing arm, a second swing arm, a first driving mechanism, a second driving mechanism, a third driving mechanism and a cloth roller lifting mechanism. The cloth roller lifting mechanism includes a first chute, a second chute, a first push block, a second push block, a first lifting mechanism and a second lifting mechanism. The first chute and the second chute are respectively arranged on the inner walls of both sides of the frame, and the first chute and the second chute are provided with longitudinal slots for lifting the roller shaft of the cloth roller. The first push block and the second push block are respectively arranged in the longitudinal slots of the first chute and the second chute for lifting the two ends of the roller shaft of the cloth roller out of the first chute and the second chute or lowering to make the roller shaft of the cloth roller return to the cloth winding position. The first lifting mechanism and the second lifting mechanism are respectively connected to and drive the first push block and the second push block to lift and lower. The third driving mechanism is connected to and drives the first lifting mechanism and the second lifting mechanism. The frame extends outwards respectively at the lower parts on both sides of the cloth roller outlet and is provided with support rods. One end of the first swing arm and one end of the second swing arm are respectively hinged to the free ends of the support rods on both sides of the frame. The free ends of the first swing arm and the second swing arm are provided with cloth roller shaft placement grooves. The first driving mechanism and the second driving mechanism are respectively arranged on both sides of the upper part of the frame, and the output shafts of the first driving mechanism and the second driving mechanism are respectively hinged to the middle parts of the first swing arm and the second swing arm. The first driving mechanism and the second driving mechanism respectively drive the first swing arm and the second swing arm to retract to the frame so that the free ends of the first swing arm and the second swing arm respectively receive the two ends of the roller shaft of the cloth roller lifted out of the first chute and the second chute. The first driving mechanism and the second driving mechanism also respectively push the first swing arm and the second swing arm away from the frame so that the cloth roller received on the free ends of the first swing arm and the second swing arm is smoothly sent out of the frame. The displacement sensor is arranged on the frame to detect whether the roller shaft of the cloth roller falls into the cloth roller shaft placement groove of the first swing arm or the second swing arm and send the detection information to the controller. The first driving mechanism, the second driving mechanism and the third driving mechanism are all connected to and controlled by the controller.

3. The automatic cloth discharging device for an open-width cloth coiling machine according to claim 2, wherein: Both the first driving mechanism and the second driving mechanism are oil cylinders or air cylinders.

4. The automatic cloth discharging device for an open-width cloth coiling machine according to claim 2, characterized in that: One side groove edge of the first chute and the second chute facing the cloth roller outlet is lower than the other side groove edge. The cloth roller shaft placement grooves on the free ends of the first swing arm and the second swing arm can respectively be placed on the lower groove edges of the first chute and the second chute for receiving the two ends of the roller shaft of the cloth roller lifted out of the first chute and the second chute.

5. The automatic cloth discharging device for an open-width cloth winder according to claim 4, characterized in that: The upper surfaces of the first push block and the second push block are respectively inclined upwards from the lower groove edge to the upper groove edge of the first chute and the second chute.

6. The automatic cloth discharging device for an open-width coiling machine according to claim 2, characterized in that: It further includes a cloth cutting mechanism. A slide rail is arranged on the two support rods of the frame. The cloth cutting mechanism is movably arranged on the slide rail to cut the cloth after the cloth roller is removed.

7. The automatic cloth discharging device for an open-width coiling machine according to claim 2, wherein: The fabric winding roller lifting mechanism further includes a synchronous wheel shaft. The two ends of the synchronous wheel shaft are respectively rotatably inserted through the two side surfaces of the frame, and synchronous wheels are respectively provided at the two ends of the synchronous wheel shaft. The first lifting mechanism and the second lifting mechanism are both synchronous wheel groups longitudinally arranged on the side of the frame. The synchronous belts of the first lifting mechanism and the second lifting mechanism respectively wind around the rotating wheels at one end of the synchronous wheel shaft. The third driving mechanism is connected to and drives the synchronous wheel shaft to rotate, thereby driving the synchronous wheel groups of the first lifting mechanism and the second lifting mechanism to rotate synchronously.

8. The automatic cloth discharging device for an open-width cloth coiling machine according to claim 7, characterized in that: The third driving mechanism is a servo motor.

9. The automatic fabric unloading device for an open-width fabric coiling machine according to claim 2, characterized in that: The third driving mechanism is two servo motors, and the two servo motors are respectively connected to and drive the first lifting mechanism and the second lifting mechanism.

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