Fully automatic roll-changing and cloth-releasing device and control method thereof

Abstract

The present invention provides a fully automatic roll-changing and cloth-releasing device and control method. The method comprises: S1, controlling the working cloth roll (50) to continuously unwind; S2, when the working cloth roll (50) is unwinded, controlling the roll-changing and connecting mechanism (20) to press the working cloth (501) and the spare cloth head (511) together, and further controlling the roll-changing and connecting mechanism (20) to cut the remaining cloth of the working cloth (501); S3, controlling the motor (12) to work so that the spare cloth roll (51) slides to the working position, at which time, the rotating shaft of the working cloth roll (50) slides to the receiving part (117) through the giving way groove (116) for recovery. The present invention can greatly reduce the lifting effect of the machine through the inclined slide rail, thereby significantly reducing the cost; it can also greatly reduce the area occupied by the site. The control method of the present invention can also reduce energy consumption, save energy and protect the environment, and be easy for industrial production.

Description

Technical Field

[0001] The invention relates to a fully automatic roll-changing and cloth-releasing device and a control method thereof, in particular to a fully automatic roll-changing and cloth-releasing device and a control method thereof for wet wipes production. Background Art

[0002] At present, in the process of wet wipes manufacturing, non-woven fabrics are needed as carriers of the stock solution. In order to facilitate production and transportation, manufacturers generally roll the finished fabrics. Therefore, in the actual production process, the rolls need to be connected and replaced during use to ensure the continuous operation of the wet wipes production line.

[0003] In the existing roll-changing device, the working cloth roll and the spare cloth roll are kept in a vertically overlapping position, and the connecting device for performing the cloth tape splicing work is set on one side of the two cloth rolls (such as CN 210236549 U). Although such a setting can reduce the floor space to a certain extent, the height of the two vertically arranged cloth rolls can often reach more than two meters, so high-power mechanical equipment is required to lift them, which makes the cost high. In addition, during the lifting process of the cloth rolls, the lifting machinery is often too large and easily damaged. Furthermore, since the height of the two cloth rolls can often reach more than two meters, workers are also required to fix and set the cloth head of the spare cloth roll at a position more than two meters, which is extremely inconvenient to operate and is prone to danger, reducing the work efficiency of the staff. Summary of the invention

[0004] The present invention provides a fully automatic roll-changing and cloth-releasing device, which can effectively solve the above-mentioned problem.

[0005] The present invention is achieved in that:

[0006] A fully automatic roll-changing cloth-releasing device, comprising: a roll-changing cloth-releasing mechanism and a roll-changing connecting mechanism (20);

[0007] Wherein, the roll-changing and cloth-releasing mechanism comprises:

[0008] Two brackets arranged symmetrically;

[0009] A slide rail is arranged on the top of each bracket, and the slide rail is arranged obliquely, the top end of the slide rail is used to carry the spare cloth roll, and the bottom end is used to carry the working cloth roll;

[0010] A first steering wheel and a second steering wheel are arranged at both ends of each slide rail, and a third steering wheel and a fourth steering wheel are arranged at the bottom of each slide rail;

[0011] A transmission chain arranged around the first steering wheel to the fourth steering wheel;

[0012] A motor driving the transmission chain;

[0013] A driving member disposed on the transmission chain, the driving member is used to place a rotating shaft on which the cloth roll is placed, and drives the rotating shaft to move under the drive of the transmission chain;

[0014] The first photoelectric sensor is used to detect whether the unwinding of the working cloth roll has been completed.

[0015] The second photoelectric sensor is arranged on a bracket between the standby cloth roll and the working cloth roll, and is used to obtain the diameter of the standby cloth roll.

[0016] A control method for the above-mentioned fully automatic roll-changing and cloth-releasing device comprises the following steps:

[0017] S1, controlling the working cloth roll to be continuously unwound;

[0018] S2, when the unwinding of the working cloth roll is completed, controlling the roll-changing and connecting mechanism to press the working cloth and the spare cloth head together, and further controlling the roll-changing and connecting mechanism to cut the remaining cloth of the working cloth;

[0019] S3, controlling the motor to operate so that the standby cloth roll slides to the working position, at which time, the rotating shaft of the working cloth roll slides to the receiving portion through the yielding groove for recovery.

[0020] The beneficial effects of the present invention are:

[0021] 1. The fully automatic roll-changing and cloth-releasing device and control method thereof provided by the present invention have an inclined slide rail. On the one hand, when the working cloth roll is used up, the spare cloth roll can slide to the bottom of the slide rail under the traction of the transmission chain under the action of gravity to serve as the working cloth roll, thereby greatly reducing the lifting effect of the machinery, thereby significantly reducing the cost and preventing the motor from being damaged; on the other hand, the inclined slide rail can also greatly reduce the area occupied by the site.

[0022] 2. The fully automatic roll-changing and cloth-releasing device and control method thereof provided by the present invention can also significantly reduce the height of the roll-changing and connecting mechanism through the inclined slide rail, so that the height of the roll-changing and connecting mechanism is lower than the height in the prior art (about 1.5-1.7 meters), so that workers do not need to work at heights, reducing workers' risks and improving efficiency.

[0023] Third, the present invention uses the inclined slide rail to allow the pressure of the working cloth roll and the spare cloth roll to be borne on the bracket, thereby greatly improving the life of the motor.

[0024] Fourth, the present invention uses a transmission chain and a driving member instead of relying entirely on gravity, and thus can solve the problem that the cloth roll is stuck on the brackets due to different friction forces between the two brackets on the two ends of the rotating shaft of the cloth roll, resulting in different forces on the rotating shaft of the cloth roll, resulting in "bias".

[0025] 5. The control method of the present invention can also reduce energy consumption, save energy and protect the environment, and is easy for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the mechanism of the fully automatic roll-changing and cloth-releasing device provided in an embodiment of the present invention.

[0028] Figure 2 The diagram is a schematic diagram of a roll-changing and cloth-releasing mechanism in a fully automatic roll-changing and cloth-releasing device provided in an embodiment of the present invention.

[0029] Figure 3 Schematic diagram of the fully automatic roll-changing and cloth-releasing device provided by an embodiment of the present invention in operation.

[0030] Figure 4 It is a structural schematic diagram of a transmission chain in a roll-changing and cloth-releasing mechanism in a fully automatic roll-changing and cloth-releasing device provided in an embodiment of the present invention.

[0031] Figure 5 The present invention provides a flow chart of a control method for a fully automatic roll-changing and cloth-releasing device. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Reference Figure 1-4 As shown, a fully automatic roll-changing and cloth-releasing device comprises: a roll-changing and cloth-releasing mechanism 10 and a roll-changing and connecting mechanism 20.

[0035] Wherein, the roll-changing and cloth-releasing mechanism 10 comprises:

[0036] Two brackets 11 are symmetrically arranged;

[0037] A slide rail 111 is disposed on the top of each bracket 11, and the slide rail 111 is inclined;

[0038] A first steering wheel 112 and a second steering wheel 113 are disposed at both ends of each slide rail 111 , and a third steering wheel 114 and a fourth steering wheel 115 are disposed at the bottom of each slide rail 111 ;

[0039] A transmission chain 13 arranged around the first steering wheel 112 to the fourth steering wheel 115;

[0040] A motor 12 driving the transmission chain 13;

[0041] The driving member 134 is disposed on the transmission chain 13 , and is used to place the rotating shaft of the cloth roll 50 / 51 , and drives the rotating shaft to move under the drive of the transmission chain 13 .

[0042] The support 11 is mainly used to support the overall weight of the cloth roll 50 / 51, and generally can be a steel frame structure. As a further improvement, in one embodiment, in order to reduce the overall weight of the support 11, the middle part of the support 11 also includes a hollow part 119, so that the support 11 as a whole forms a "circular" structure.

[0043] The two ends of the slide rail 111 are used to carry the working cloth roll 50 and the spare cloth roll 51, respectively. Specifically, the top of the slide rail 111 is used to carry the spare cloth roll 51, and the bottom end is used to carry the working cloth roll 50. The advantage of this is that, since the slide rail 111 is tilted, when the working cloth roll 50 is used up, the spare cloth roll 51 can slide to the bottom of the slide rail 111 as a working cloth roll under the traction of the transmission chain 13 under the action of gravity, thereby greatly reducing the mechanical lifting effect and significantly reducing costs. Preferably, the slide rail 111 forms an angle of greater than or equal to 5° and less than or equal to 30° with the horizontal direction. This is because when the angle is too small, on the one hand, the gravity of the spare cloth roll 51 sliding down is small, so the motor 12 needs to output a larger power; on the other hand, it will also cause the roll-changing cloth-releasing mechanism 10 to occupy a larger site and area. When the angle is too large, on the one hand, the spare cloth roll 51 has a large inertia when sliding down, so the motor 12 or other locking mechanism is easily damaged when braking; on the other hand, when the chain is stationary during use, due to the large gravity, the motor 12 or other locking mechanism bears a large load and is also easily damaged. More preferably, the slide rail 111 forms an angle of greater than or equal to 15° and less than or equal to 25° with the horizontal direction. In one embodiment, the slide rail 111 forms an angle of about 20° with the horizontal direction.

[0044] The first steering wheel 112 , the second steering wheel 113 , the third steering wheel 114 and the fourth steering wheel 115 form a quadrilateral mechanism, so that the transmission chain 13 arranged around the first steering wheel 112 to the fourth steering wheel 115 also forms a quadrilateral mechanism.

[0045] The model of the motor 12 is not limited, as long as it can drive the transmission chain 13. As a further improvement, the roll-changing cloth-releasing mechanism 10 also includes a locking mechanism, which is used to lock the spare cloth roll 51 when the spare cloth roll 51 slides down to the bottom working position, so as to switch the spare cloth roll 51 to the working cloth roll 50. Further, the locking mechanism and the motor 12 can be linked, that is, when the spare cloth roll 51 slides down to the bottom working position and is locked by the locking mechanism, a control signal is sent to control the motor 12 to brake. The locking mechanism may include a micro switch, a first motor, and a buckle set on the rotating shaft of the first motor. When the spare cloth roll 51 slides down to the bottom working position, the micro switch is triggered, and the micro switch sends a control signal to control the first motor to rotate so that the buckle set on the rotating shaft of the first motor floats up and presses against the rotating shaft of the spare cloth roll 51, and at the same time sends a control signal to control the motor 12 to brake.

[0046] A clearance groove 116 for allowing the rotating shaft of the working cloth roll 50 to pass is further formed between the connecting line of the second steering wheel 113 and the third steering wheel 114 and the bracket 11. The clearance groove 116 is tilted at a predetermined angle so that the rotating shaft of the working cloth roll 50 can slide smoothly to the receiving portion 117 at the bottom without causing additional collision. Preferably, the clearance groove 116 forms an angle of 10 to 40° with the vertical direction. More preferably, the clearance groove 116 forms an angle of 20 to 30° with the vertical direction. In one embodiment, the clearance groove 116 forms an angle of 25° with the vertical direction. If the angle between the clearance groove 116 and the vertical direction is too small, it is easy for the rotating shaft of the working cloth roll 50 to fall directly, and during the direct fall, jamming often occurs due to the imbalance of the two ends of the rotating shaft.

[0047] The receiving portion 117 includes a first connecting portion 1171 and a second connecting portion 1172. The first connecting portion 1171 cooperates with the transmission chain 13 and is connected to the give way groove 116 to receive the rotating shaft of the working cloth roll 50. The second connecting portion 1172 is arranged lower than the first connecting portion 1171, so that the rotating shaft of the working cloth roll 50 can slide out smoothly due to gravity without being stuck at the bottom of the bracket 11.

[0048] Please also see Figure 2 , the top of the slide rail 111 of the transmission chain 13 is defined as point A, the bottom of the slide rail 111 of the transmission chain 13 is defined as point B, and the connection point of the transmission chain 13 at the first connection part 1171 and the second connection part 1172 is defined as point C, wherein the rotation axis of the cloth roll 50 / 51 moves from point A to point B and then to point C under the driven drive of the motor 12, rather than relying entirely on its own gravity. This is because if it relies entirely on its own gravity, the friction forces of the two brackets 11 on both ends of the rotation axis of the cloth roll 50 / 51 are different, so the rotation axis of the cloth roll 50 / 51 will be subjected to different forces and produce "bias" and get stuck in the bracket 11, which seriously affects production. Therefore, further, the transmission chain 13 is evenly divided into three sections at the positions of point A, point B and point C, and the driving member 134 is respectively arranged on the transmission chain 13 at point A, point B and point C. This is because when the transmission chain 13 is transmitted from point A to point B, point B is just transmitted to point C, and the rotating shaft of the cloth roll 50 / 51 is just separated from the transmission chain 13 and slides out from the second connecting part 1172, forming continuous production. That is, the point C is set at the connection between the second connecting part 1172 and the first connecting part 1171.

[0049] Please also see Figure 4The transmission chain 13 includes a chain body 131 and a side plate 132 disposed on one side of the chain body 131; the side plate 132 is provided with a through hole 133 for fixing the driving member 134. The driving member 134 can be threadedly matched with the through hole 133 to achieve the fixing of the driving member 134. The driving member 134 can include two driving members 134 disposed at intervals, and the rotating shaft of the cloth roll 50 / 51 is disposed between the two driving members 134. When the chain body 131 moves forward, the driving member 134 also moves forward to drive the rotating shaft of the cloth roll 50 / 51 to move forward. The position of the chain body 131 at the slide rail 111 is parallel to the slide rail 111 and is lower than the slide rail 111, so that the pressure of the cloth roll 50 / 51 is borne on the slide rail 111, and the chain body 131 is not subjected to force. It can be understood that the driving member 134 needs to protrude from the surface of the slide rail 111 so as to drive the rotation axis of the cloth roll 50 / 51 to move.

[0050] As a further improvement, the roll-changing and cloth-releasing mechanism 10 further includes a first photoelectric sensor 14 for detecting whether the working cloth roll 50 has been completely unwound, and if so, further controlling the roll-changing and connecting mechanism 20 to operate.

[0051] As a further improvement, the roll-changing and cloth-releasing mechanism 10 further includes a second photoelectric sensor 15, which is arranged on the bracket 11 between the standby cloth roll 51 and the working cloth roll 50. The second photoelectric sensor 15 is used to obtain the diameter of the standby cloth roll 51. When the working cloth roll 50 is unrolled and the roll-changing and connecting mechanism 20 is successfully connected, the standby cloth roll 51 starts to work for a predetermined time when it is in the standby position. When the second photoelectric sensor 15 detects that the diameter of the standby cloth roll 51 is lower than the predetermined diameter R, that is, after working in the standby position for a predetermined time, it starts to control the standby cloth roll 51 to switch from the top standby position to the bottom working position. This has the advantage that the height of the roll-changing and connecting mechanism 20 can be reduced, thereby reducing the volume of the entire fully automatic roll-changing and cloth-releasing device. The first photoelectric sensor 14 and the second photoelectric sensor 15 are both prior art and will not be described here.

[0052] The roll changing and connecting mechanism 20 comprises:

[0053] A support plate 21; and

[0054] The first guide shaft 22, the cutting blade 23, the pressing member, the second guide shaft 25, and the third guide shaft 26 are arranged on the support plate 21. The pressing member includes a first pressing head 24 and a second pressing head 27 arranged opposite to each other; and the first guide shaft 22 and the second guide shaft 25 are respectively arranged at the top of the bottom of the first pressing head 24, and the cutting blade 23 is arranged between the first guide shaft 22 and the first pressing head 24; the third guide shaft 26 is arranged at the bottom of the second pressing head 27. The working cloth roll 50 sequentially passes through the first guide shaft 22, the cutting blade 23, the pressing member, and the second guide shaft 25 to provide the working cloth 501 to the tension adjustment mechanism 30. The spare cloth head 511 of the spare cloth roll 51 is fixedly arranged on the second pressing head 27 through the third guide shaft 26. Specifically, the spare cloth head 511 of the spare cloth roll 51 can be pre-attached with double-sided tape, and the spare cloth head 511 of the spare cloth roll 51 is fixed to the surface of the working cloth roll 50 on the second pressing head 27 by the double-sided tape. When the first photoelectric sensor 14 detects that the unwinding of the working cloth roll 50 is completed, the pressing parts are controlled to squeeze each other so that the working cloth 501 and the spare cloth head 511 are pressed together, and the cutting knife 23 is further controlled to cut the remaining cloth of the working cloth 501.

[0055] As a further improvement, the fully automatic roll-changing and cloth-releasing device further includes a tension adjustment mechanism 30 for adjusting the overall tension of the working cloth 501. The tension adjustment mechanism 30 can also make the working cloth 501 of the working cloth roll 50 have a predetermined pre-tightening force after the working cloth roll 50 is unwound. The tension adjustment mechanism 30 includes a plurality of first reversing shafts 32 arranged horizontally, a second reversing shaft 33 arranged at the bottom of the first reversing shaft 32, a third reversing shaft 34 arranged at the upper side of the first reversing shaft 32, and a fourth reversing shaft 35. The second reversing shaft 33 is arranged on the slide rail, and is used to further provide pre-tightening force to the working cloth roll 50 due to the loosening of the working cloth roll 50 when the working cloth roll 50 is connected after the unwound. Specifically, the sliding of the second reversing shaft 33 on the slide rail can be controlled by a motor, thereby increasing the pre-tightening force of the working cloth roll 50. The working fabric 501 is adjusted in tension by passing through the first reversing shaft 32, the second reversing shaft 33, the third reversing shaft 34 and the fourth reversing shaft 35, thereby achieving a stable output of tension. Specifically, in one embodiment, the working fabric 501 is adjusted in tension by passing through the first reversing shaft 32, the second reversing shaft 33, the first reversing shaft 32, the second reversing shaft 33, the first reversing shaft 32, the third reversing shaft 34, the fourth reversing shaft 35 and the third reversing shaft 34 in sequence, thereby achieving a stable output of tension.

[0056] As a further improvement, the fully automatic roll changing and cloth placing device further comprises a cutting mechanism 40 for cutting the working cloth 501. The cutting mechanism 40 is a prior art and will not be described again.

[0057] Please refer to Figure 5 The embodiment of the present invention further provides a control method for a fully automatic roll-changing and cloth-releasing device, comprising the following steps:

[0058] S1, controlling the working cloth roll 50 to be continuously unwound;

[0059] S2, when the unwinding of the working cloth roll 50 is completed, the roll-changing connecting mechanism 20 is controlled to press the working cloth 501 and the spare cloth head 511 together, and the cutting knife 23 is further controlled to cut the remaining cloth of the working cloth 501;

[0060] S3, controlling the motor 12 to operate so that the standby cloth roll 51 slides to the working position. At this time, the rotating shaft of the working cloth roll 50 slides to the receiving portion 117 through the yielding groove 116 for recovery.

[0061] In step S1, the first photoelectric sensor 14 can continuously detect whether the working cloth 501 of the working cloth roll 50 has been unwound, thereby determining whether the working cloth roll 50 has been unwound. Figure 3 ,from Figure 3 The first photoelectric sensor 14 will continue to send out signals to detect whether the working cloth 501 has been discharged. When the first photoelectric sensor 14 cannot detect any signal, it means that the working cloth 501 has been discharged.

[0062] In step S2, since the double-sided tape is pre-sticked on the spare fabric head 511, when the first photoelectric sensor 14 detects that the unwinding of the working fabric roll 50 has been completed, the pressing parts are controlled to squeeze each other so that the working fabric 501 and the spare fabric head 511 are pressed and bonded together, and the cutting knife 23 is further controlled to cut the remaining fabric of the working fabric 501.

[0063] In step S3, the following steps may be further included:

[0064] The tension adjustment mechanism enables the working fabric 501 of the working fabric roll 50 to have a predetermined pre-tightening force.

[0065] In step S3, controlling the motor 12 to operate so that the spare cloth roll 51 slides to the working position specifically includes:

[0066] S31, the diameter of the standby cloth roll 51 is obtained through the second photoelectric sensor 15, and when the diameter of the standby cloth roll 51 is less than the set value R, the motor 12 is controlled to work so that the standby cloth roll 51 slides to the working position; otherwise, the standby cloth roll 51 is first controlled to work at the standby position for a predetermined time until the diameter of the standby cloth roll 51 is less than the set value R, and then the motor 12 is controlled to work so that the standby cloth roll 51 working at the standby position slides to the working position. It can be understood that through such control, the height of the roll changing connection mechanism can be further reduced.

[0067] It can be understood that in step S31, the diameter of a general cloth roll is defined as r, so the set value R can be 0.5r~0.8r. In one embodiment, the set value R can be 0.7r. The diameter of a general cloth roll is about 100 cm, so the set value R can be about 50~80 cm. In one embodiment, the set value R can be 70 cm. That is, in step S31, when the diameter of the standby cloth roll 51 placed is 70 cm, the motor 12 is directly controlled to work so that the standby cloth roll 51 slides to the working position; when the diameter of the standby cloth roll 51 placed is 100 cm, the standby cloth roll 51 is first controlled to work at the standby position for a predetermined time until the diameter of the standby cloth roll 51 is less than 70 cm, and then the motor 12 is controlled to work so that the standby cloth roll 51 working at the standby position slides to the working position.

[0068] After step S3, the method may further include:

[0069] When the motor 12 is controlled to operate so that the spare cloth roll 51 slides to the working position, another spare cloth roll 51 is placed in the standby position, and then the spare cloth head 511 thereof is pre-attached with double-sided tape and fixed on the second pressing head 27 .

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fully automatic roll-changing and cloth-releasing device, characterized in that: include: A roll-changing and cloth-releasing mechanism (10) and a roll-changing and connecting mechanism (20); the roll-changing and cloth-releasing mechanism (10) comprises: Two brackets (11) arranged symmetrically; A slide rail (111) is arranged on the top of each bracket (11), and the slide rail (111) is arranged to be inclined, the top end of the slide rail (111) is used to carry the spare cloth roll (51), and the bottom end is used to carry the working cloth roll (50); A first steering wheel (112) and a second steering wheel (113) are arranged at both ends of each slide rail (111), and a third steering wheel (114) and a fourth steering wheel (115) are arranged at the bottom of each slide rail (111); a transmission chain (13) arranged around the first steering wheel (112) to the fourth steering wheel (115); A motor (12) driving the transmission chain (13); a driving member (134) disposed on the transmission chain (13), the driving member (134) being used to place a rotating shaft of the cloth roll (50 / 51) and to drive the rotating shaft to move under the drive of the transmission chain (13); A first photoelectric sensor (14) for detecting whether the working cloth roll (50) has been unwound; A second photoelectric sensor (15) is disposed on the bracket (11) between the spare cloth roll (51) and the working cloth roll (50), and is used to obtain the diameter of the spare cloth roll (51); A clearance groove (116) for allowing the rotating shaft of the working cloth roll (50) to pass through is further formed between the connecting line of the second steering wheel (113) and the third steering wheel (114) and the bracket (11); the clearance groove (116) is inclined at a predetermined angle so that the rotating shaft of the working cloth roll (50) can slide smoothly to the receiving portion (117) at the bottom.

2. The fully automatic roll-changing and cloth-releasing device according to claim 1, characterized in that: The slide rail (111) forms an angle with the horizontal direction that is greater than or equal to 5° and less than or equal to 30°.

3. The fully automatic roll-changing and cloth-releasing device according to claim 1, characterized in that: The receiving portion (117) comprises a first connecting portion (1171) and a second connecting portion (1172); the first connecting portion (1171) cooperates with the transmission chain (13) and is connected to the clearance groove (116) to receive the rotating shaft of the working cloth roll (50); the second connecting portion (1172) is arranged lower than the first connecting portion (1171), so that the rotating shaft of the working cloth roll (50) can slide out smoothly completely due to the effect of gravity.

4. The fully automatic roll-changing and cloth-releasing device according to claim 3 is characterized in that: The top of the transmission chain (13) on the slide rail (111) is defined as point A, the bottom of the transmission chain (13) on the slide rail (111) is defined as point B, and the connection point between the first connection part (1171) and the second connection part (1172) of the transmission chain (13) is defined as point C, wherein the transmission chain (13) is evenly divided into three sections at the positions of point A, point B and point C.

5. The fully automatic roll-changing and cloth-releasing device according to claim 1, characterized in that: The roll changing and connecting mechanism (20) comprises: a support plate (21); and A first guide shaft (22), a cutting knife (23), a pressing piece, a second guide shaft (25), and a third guide shaft (26) are arranged on the support plate (21); the pressing piece comprises a first pressing head (24) and a second pressing head (27) arranged opposite to each other; the first guide shaft (22) and the second guide shaft (25) are respectively arranged at the top of the bottom of the first pressing head (24); the cutting knife (23) is arranged between the first guide shaft (22) and the first pressing head (24); and the third guide shaft (26) is arranged at the bottom of the second pressing head (27).

6. The fully automatic roll-changing and cloth-releasing device according to claim 1, characterized in that: The slide rail (111) forms an angle with the horizontal direction that is greater than or equal to 15° and less than or equal to 25°.

7. A control method for a fully automatic roll-changing and cloth-releasing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, controlling the working cloth roll (50) to be continuously unwound; S2, when the unwinding of the working cloth roll (50) is completed, controlling the roll-changing connecting mechanism (20) to press the working cloth (501) and the spare cloth head (511) together, and further controlling the roll-changing connecting mechanism (20) to cut the remaining cloth of the working cloth (501); S3, controlling the motor (12) to operate so that the spare cloth roll (51) slides to the working position, at which time the rotating shaft of the working cloth roll (50) slides through the clearance groove (116) to the receiving portion (117) for recovery.

8. The control method of the fully automatic roll-changing and cloth-releasing device according to claim 7, characterized in that: The step of controlling the motor (12) to operate so that the spare cloth roll (51) slides to the working position specifically comprises: S31, obtaining the diameter of the standby cloth roll (51) through the second photoelectric sensor (15), and when the diameter of the standby cloth roll (51) is less than a set value R, controlling the motor (12) to operate so that the standby cloth roll (51) slides to the working position; otherwise, first controlling the standby cloth roll (51) to operate at the standby position for a predetermined time until the diameter of the standby cloth roll (51) is less than the set value R, and then controlling the motor (12) to operate so that the standby cloth roll (51) operating at the standby position slides to the working position.

9. The control method of the fully automatic roll-changing and cloth-releasing device according to claim 8, characterized in that: The diameter of the cloth roll is defined as r, and the set value R is 0.5r~0.8r.

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