CN210506794U

CN210506794U - Denim cutting system

Info

Publication number: CN210506794U
Application number: CN201920762188.1U
Authority: CN
Inventors: 陆惠芬
Original assignee: Foshan Nanhai Deyao Xiangsheng Textile Co ltd
Current assignee: Foshan Nanhai Deyao Xiangsheng Textile Co ltd
Priority date: 2019-05-25
Filing date: 2019-05-25
Publication date: 2020-05-12
Anticipated expiration: 2029-05-25

Abstract

The utility model relates to a denim cutting system, which comprises a frame, a liquid caustic soda cylinder, a left guide device, a right guide device, a driving device and a liquid supplementing device, wherein the left guide device comprises a left motor, a left belt, a left guide roller, a left pressure roller, a left swinging rod and a left air cylinder, and the left guide device is arranged on the frame; the right guide device comprises a right motor, a right belt, a right guide roller, a right nip roll, a right swing rod and a right cylinder, and the right guide device is arranged on the rack; the driving device comprises a fixed block, a movable rod, a movable roller, a gear and a driving motor, wherein the driving motor is used for indirectly driving the movable roller to vertically move in the liquid caustic soda cylinder; the liquid supplementing device comprises a liquid caustic soda tank, a liquid caustic soda pump and a liquid caustic soda pipe, wherein the liquid caustic soda tank is arranged beside the liquid caustic soda tank, and the liquid caustic soda pump can pump the liquid caustic soda in the liquid caustic soda tank into the liquid caustic soda tank. The utility model discloses on satisfying the basis that the cloth was handled, can reduce the waste liquid volume again, can avoid the wasting of resources and reduce use cost, and it still has advantages such as the structure is reliable, convenient to use.

Description

Denim cutting system

Technical Field

The utility model relates to a jeans production facility field, especially a denim cutting system.

Background

The Chinese patent application numbers are: CN201621476504.1 patent document discloses a technical solution named as "a denim opening cylinder", which includes the following technical features: the device comprises a liquid caustic soda cylinder, cloth, an upper guide roller set, a feeding roller, a discharging roller, a lower guide roller set, a suspension bracket, a pressure cylinder, a piston rod, a connector and a power device; the lower guide roller set is fixed in the liquid alkali cylinder and cannot move up and down in the liquid alkali cylinder, so that the position of the lower guide roller set cannot be adjusted according to the height of the liquid level in the liquid alkali cylinder, and the liquid alkali between the lower guide roller set and the bottom of the inner cavity of the liquid alkali cylinder is difficult to contact with the cloth. Meanwhile, the inner cavity of the liquid alkali cylinder is of a rectangular structure, and the cloth in the liquid alkali cylinder is V-shaped, so that redundant spaces can exist on two sides of the cloth, and the liquid alkali in the spaces is difficult to contact with the cloth. Due to the fact that under the long-time use, more dust is prone to falling into the inner cavity of the liquid caustic soda cylinder, and the cloth can also bring the dust, dregs and debris into the liquid caustic soda cylinder, the liquid caustic soda is polluted, and the liquid caustic soda is difficult to contact with the cloth. In order to ensure the processing quality of the cloth, the polluted liquid caustic soda has to be treated as waste liquid, which easily causes a large amount of liquid caustic soda to be treated, thereby causing the waste of resources and the increase of the use cost. At present, the liquid caustic soda is added into the liquid caustic soda cylinder in a manual mode mostly. The adding process comprises the following steps: the operator lifts the pot filled with the liquid caustic soda and then pours the liquid caustic soda in the pot into the liquid caustic soda pot. In the adding process, the liquid caustic soda is easy to splash, so that the liquid caustic soda is easy to splash to skin or clothes, and the liquid caustic soda is easy to hurt workers; the whole adding process is low in convenience; most of the jean cloth is added into the liquid caustic soda cylinder only by stopping the jean cloth cutting cylinder, which easily causes the reduction of the processing efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem and not enough, provide a denim system of cutting, this denim system of cutting is satisfying on the basis that the cloth was handled, can reduce the waste liquid volume again, can avoid the wasting of resources and reduce use cost, and it still has advantages such as the structure is reliable, convenient to use.

The technical scheme of the utility model is realized like this:

a denim cutting system is characterized by comprising a rack, a caustic soda liquid cylinder, a left guide device, a right guide device, a driving device and a liquid supplementing device, wherein a V-shaped groove for storing caustic soda liquid is formed in the top of the caustic soda liquid cylinder, and the caustic soda liquid cylinder is arranged beside the rack; the left guide device comprises a left motor, a left belt, a left guide roller, a left pressure roller, a left swinging rod and a left air cylinder, wherein the left motor is arranged on the rack, the left motor is positioned on the left side of the liquid caustic soda cylinder, the left guide roller is arranged on the rack, the left guide roller is positioned above the left side of the liquid caustic soda cylinder, the left guide roller is also in driving connection with the left motor through the left belt, one end of the left swinging rod is hinged on the rack, the left pressure roller is arranged at the other end of the left swinging rod, the left pressure roller is positioned above the left guide roller, a cylinder body of the left air cylinder is hinged on the rack, a piston rod of the left air cylinder is hinged in the middle of the left swinging rod, and the other end of the left swinging rod can reciprocate up and down through the driving of the left air cylinder, so that the left pressure roller can movably act on the left guide roller; the right guide device comprises a right motor, a right belt, a right guide roller, a right pressure roller, a right oscillating rod and a right air cylinder, the right motor is arranged on the rack, the right motor is positioned on the right side of the liquid alkali cylinder, the right guide roller is arranged on the rack, the right guide roller is positioned above the right side of the liquid alkali cylinder, the right guide roller is also in driving connection with the right motor through the right belt, one end of the right oscillating rod is hinged on the rack, the right pressure roller is arranged at the other end of the right oscillating rod and is positioned above the right guide roller, a cylinder body of the right air cylinder is hinged on the rack, a piston rod of the right air cylinder is hinged in the middle of the right oscillating rod, and the other end of the right oscillating rod can reciprocate up and down through the driving of the right air cylinder, so that the right pressure roller can movably act on the right guide roller; the driving device comprises a fixed block, a movable rod, a movable roller, a gear and a driving motor, wherein the fixed block is arranged on the rack, the fixed block is positioned right above the liquid caustic soda cylinder, a vertically extending limiting chute is formed in the fixed block, the movable rod is vertically arranged in the limiting chute, the movable rod can vertically slide in the limiting chute, a vertically extending rack part is formed in the outer wall of the movable rod, the driving motor is arranged on the rack, the gear is arranged on a power output shaft of the driving motor and is meshed with the rack part, and the movable roller is arranged on the lower end part of the movable rod and is positioned in the V-shaped groove; the liquid supplementing device comprises a liquid caustic soda tank, a liquid caustic soda pump and a liquid caustic soda pipe, wherein the liquid caustic soda tank is arranged beside the liquid caustic soda tank, one end of the liquid caustic soda pipe is connected to the liquid caustic soda tank, the other end of the liquid caustic soda pipe extends into the V-shaped groove, the liquid caustic soda pump is arranged beside the liquid caustic soda tank, and the liquid caustic soda pump is connected to the liquid caustic soda pipe in series.

Furthermore, the denim cutting system further comprises a photoelectric liquid level sensor and a control circuit module, wherein the control circuit module is arranged on the rack and electrically connected with the liquid caustic soda pump, and the photoelectric liquid level sensor is arranged on the upper side of the inner wall of the V-shaped groove and electrically connected with the control circuit module.

The utility model has the advantages that: the V-shaped groove for storing the liquid caustic soda is V-shaped on the liquid caustic soda cylinder, the left guide roller and the right guide roller are respectively positioned above the left side and the right side of the liquid caustic soda cylinder, and the movable roller is positioned in the V-shaped groove, so that after the cloth is wound on the left guide roller, the movable roller and the right guide roller, the shape of the cloth can be just similar to that of the V-shaped groove, and the generation of redundant space on the V-shaped groove can be effectively reduced on the basis of ensuring the contact of the cloth and the liquid caustic soda; therefore, when the liquid caustic soda is polluted by dust, dregs or scraps, the amount of waste can be effectively reduced, so that the waste of resources is avoided, and the use cost of a user can be reduced. Because the movable roller is arranged in the V-shaped groove and is connected with the lower end of the movable rod, when the driving motor is started, the movable rod can make vertical reciprocating motion through the matching of the gear and the rack part, so that the movable roller can make vertical reciprocating motion in the V-shaped groove, the height of the movable roller can be selected according to the amount of the liquid alkali in the V-shaped groove, and the cloth can be ensured to be fully contacted with the liquid alkali in the V-shaped groove. The reliability of the denim cutting system is very high, which is beneficial to improving the processing quality of cloth. The contact time of the cloth and the liquid caustic soda can be conveniently changed by a user according to the requirement, namely the contact time of the cloth and the liquid caustic soda is long when the movable roller is close to the bottom of the V-shaped groove; when the movable roller is close to the notch of the V-shaped groove, the contact time of the cloth and the liquid caustic soda is short; the jean cutting system can meet the processing requirements of different fabrics conveniently, and the applicability of the jean cutting system is very good. Meanwhile, the denim cutting system can also ensure that liquid caustic soda on the lower layer in the V-shaped groove can contact with the cloth, so that the conditions of deposition and waste of the liquid caustic soda on the lower layer are avoided. The left pressure roll is arranged on the left swing rod, and the left swing rod can swing under the driving of the left air cylinder, so that the distance between the left pressure roll and the left guide roll can be changed through the left air cylinder, and cloth with different thicknesses can conveniently pass through the left pressure roll and the left guide roll; the right guide mechanism and the left guide mechanism have the same structure, so that the cloth with different thicknesses can conveniently pass through the space between the right nip roll and the right guide roll on the right guide mechanism; therefore, the jean cutting system of the utility model can process jeans with different thicknesses, and has wide application range. Because the liquid supplementing device comprises the liquid caustic soda cylinder, the liquid caustic soda pump and the liquid caustic soda pipe, and the liquid caustic soda stored in the liquid caustic soda cylinder can be pumped into the V-shaped groove by the liquid supplementing device, the liquid caustic soda can be supplemented into the V-shaped groove conveniently by the liquid supplementing device, the use convenience of the denim cutting system is improved, the processing efficiency is improved, and the probability of injury to workers can be effectively reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the middle left guiding device of the present invention.

Fig. 3 is a schematic structural view of the middle left guiding device of the present invention.

Fig. 4 is a schematic structural diagram of the middle driving device of the present invention.

Fig. 5 is a schematic structural view of the middle fluid infusion device of the present invention.

Detailed Description

As shown in fig. 1, the denim cutting system of the present invention comprises a frame 1, a caustic soda liquid cylinder 2, a left guide device 3, a right guide device 4, a driving device 5, and a liquid replenishing device 6, wherein, as shown in fig. 1, a V-shaped groove 21 for storing caustic soda liquid is provided at the top of the caustic soda liquid cylinder 2, and the caustic soda liquid cylinder 2 is arranged beside the frame 1; as shown in fig. 1 and fig. 2, the left guide device 3 includes a left motor 31, a left belt 32, a left guide roller 33, a left nip roller 34, a left swing rod 35, and a left air cylinder 36, the left motor 31 is disposed on the frame 1, the left motor 31 is disposed on the left side of the caustic soda tank 2, the left guide roller 33 is disposed on the frame 1, the left guide roller 33 is disposed on the upper left side of the caustic soda tank 2, the left guide roller 33 is drivingly connected to the left motor 31 through the left belt 32, one end of the left swing rod 35 is hinged to the frame 1, the left nip roller 34 is disposed on the other end of the left swing rod 35, the left nip roller 34 is disposed on the upper left guide roller 33, the cylinder body of the left air cylinder 36 is hinged to the frame 1, the piston rod of the left air cylinder 36 is hinged to the middle of the left swing rod 35, and the other end of the left swing rod 35 can reciprocate up and down by the driving of the left air cylinder 36, so that the left nip roll 34 can act actively on the left guide roll 33; as shown in fig. 1 and 3, the right guide device 4 includes a right motor 41, a right belt 42, a right guide roller 43, a right nip roller 44, a right swing rod 45, and a right air cylinder 46, the right motor 41 is disposed on the frame 1, the right motor 41 is disposed on the right side of the caustic soda tank 2, the right guide roller 43 is disposed on the frame 1, the right guide roller 43 is disposed on the right upper side of the caustic soda tank 2, the right guide roller 43 is drivingly connected to the right motor 41 through the right belt 42, one end of the right swing rod 45 is hinged to the frame 1, the right nip roller 44 is disposed on the other end of the right swing rod 45, the right nip roller 44 is disposed on the right upper side of the right guide roller 43, a cylinder body of the right air cylinder 46 is hinged to the frame 1, a piston rod of the right air cylinder 46 is hinged to the middle portion of the right swing rod 45, and the other end of the right swing rod 45 can reciprocate up and down by the driving of the right air, so that the right nip roll 44 can actively act on the right guide roll 43; as shown in fig. 1 and 4, the driving device 5 includes a fixed block 51, a movable rod 52, a movable roller 53, a gear 54, and a driving motor 55, the fixed block 51 is disposed on the frame 1, the fixed block 51 is located right above the liquid caustic soda cylinder 2, a vertically extending limiting chute 511 is formed on the fixed block 51, the movable rod 52 is vertically disposed in the limiting chute 511, and the movable rod 52 can vertically slide in the limiting chute 511, a vertically extending rack portion 521 is formed on an outer wall of the movable rod 52, the driving motor 55 is disposed on the frame 1, the gear 54 is disposed on a power output shaft of the driving motor 55, and the gear 54 is engaged with the rack portion 521, the movable roller 53 is disposed on a lower end portion of the movable rod 52, and the movable roller 53 is located in the V-shaped groove 21; as shown in fig. 1 and 5, the liquid caustic soda replenishing device 6 includes a liquid caustic soda tank 61, a liquid caustic soda pump 62, and a liquid caustic soda pipe 63, wherein the liquid caustic soda tank 61 is disposed beside the liquid caustic soda tank 2, one end of the liquid caustic soda pipe 63 is connected to the liquid caustic soda tank 61, the other end of the liquid caustic soda pipe 63 extends into the V-shaped groove 21, the liquid caustic soda pump 62 is disposed beside the liquid caustic soda tank 2, and the liquid caustic soda pump 62 is connected in series to the liquid caustic soda pipe 63. Because the V-shaped groove 21 for storing the liquid caustic soda on the liquid caustic soda cylinder 2 is V-shaped, the left guide roller 33 and the right guide roller 43 are respectively positioned at the left upper part and the right upper part of the liquid caustic soda cylinder 2, and the movable roller 53 is positioned in the V-shaped groove 21, after the cloth is wound on the left guide roller 33, the movable roller 53 and the right guide roller 43, the shape of the cloth can be just similar to that of the V-shaped groove 21, and the generation of redundant space on the V-shaped groove 21 can be effectively reduced on the basis of ensuring the contact of the cloth and the liquid caustic soda; therefore, when the liquid caustic soda is polluted by dust, dregs or scraps, the amount of waste can be effectively reduced, so that the waste of resources is avoided, and the use cost of a user can be reduced. Because the movable roller 53 is arranged in the V-shaped groove 21 and is connected with the lower end of the movable rod 52, and when the driving motor 55 is started, the movable rod 52 can make vertical reciprocating motion through the matching of the gear 54 and the rack portion 521, so that the movable roller 53 can make vertical reciprocating motion in the V-shaped groove 21, and thus the height of the movable roller 53 can be selected according to the amount of liquid caustic soda in the V-shaped groove 21, so as to ensure that the cloth can be fully contacted with the liquid caustic soda in the V-shaped groove 21. The reliability of the denim cutting system is very high, which is beneficial to improving the processing quality of cloth. And this can also facilitate the user to change the contact time of cloth and caustic soda according to need, namely when the movable roller 53 is close to the groove bottom of the V-shaped groove 21, the contact time of cloth and caustic soda is long; when the movable roller 53 is close to the notch of the V-shaped groove 21, the contact time of the cloth and the liquid caustic soda is short; the jean cutting system can meet the processing requirements of different fabrics conveniently, and the applicability of the jean cutting system is very good. Meanwhile, the denim cutting system can also ensure that the liquid caustic soda on the lower layer in the V-shaped groove 21 can contact with the cloth, so that the conditions of deposition and waste of the liquid caustic soda on the lower layer are avoided. Because the left nip roll 34 is arranged on the left swing rod 35, and the left swing rod 35 can swing under the driving of the left air cylinder 36, the distance between the left nip roll 34 and the left guide roll 33 can be changed through the left air cylinder 36, so that cloth with different thicknesses can conveniently pass through the space between the left nip roll 34 and the left guide roll 33; since the right guide mechanism 4 and the left guide mechanism 3 have the same structure, it can be known in the same way that on the right guide mechanism 4, the cloth with different thicknesses can conveniently pass through the space between the right nip roll 44 and the right guide roll 43; therefore, the jean cutting system of the utility model can process jeans with different thicknesses, and has wide application range. Because the liquid replenishing device 6 comprises the liquid caustic soda cylinder 2, the liquid caustic soda pump 62 and the liquid caustic soda pipe 63, and the liquid caustic soda pump 62 can pump the liquid caustic soda stored in the liquid caustic soda cylinder 2 into the V-shaped groove 21, the liquid caustic soda can be conveniently replenished into the V-shaped groove 21 through the liquid replenishing device 6, which is beneficial to improving the use convenience of the jean cutting system, thus being beneficial to improving the processing efficiency and effectively reducing the probability of harm to workers.

The left motor 31, the right motor 41 and the driving motor 55 are all servo motors.

The limiting sliding groove 511 is a T-shaped groove with a T-shaped section, the movable rod 52 penetrates through the T-shaped groove, and the rack portion 521 protrudes out of the notch of the T-shaped groove, so that the rack portion 521 can be well meshed with the gear 54, the movable rod 52 can be well limited on the T-shaped groove, and the assembling structure is very reliable.

And a liquid outlet is formed in the bottom of the V-shaped groove 21 and used for discharging waste liquid.

In the jean cutting system of the utility model, the cloth 10 is firstly drawn in by the right guide mechanism 4 and then drawn out by the left guide mechanism 3; the specific winding method of the fabric 10 is as follows: as shown in fig. 1, the fabric 10 first passes between the right nip roller 44 and the right guide roller 43, and the fabric 10 is wound around the right guide roller 43; then the cloth 10 is wound on the movable roller 53; the fabric 10 is then passed between the left nip roll 34 and the left guide roll 33, and the fabric 10 is wound around the left guide roll 33. The utility model discloses a denim cutting system during operation makes left guide roller 33 and right guide roller 43's traction speed keep in step through left motor 31, right motor 41 respectively to avoid cloth 10 to appear the too big or lax condition of local pulling force in denim cutting system, with the stationarity of guaranteeing cloth 10 to carry. When the movable roller 53 is moved downward by the driving motor 55, the rotation speed of the right motor 41 is increased at the same time to increase the rotation speed of the right guide roller 43, thereby accelerating the input of the cloth 10, and when the movable roller 53 reaches a desired position, the pulling speeds of the right guide roller 43 and the left guide roller 33 are maintained to be the same again; this prevents the cloth 10 from becoming too tight when the movable roller 53 moves downward. When the movable roller 53 is moved upward by the driving motor 55, the rotation speed of the left motor 31 is increased to increase the rotation speed of the left guide roller 33, thereby increasing the output of the cloth 10, and when the movable roller 53 reaches a desired position, the drawing speeds of the right guide roller 43 and the left guide roller 33 are maintained to be the same again; thus, when the movable roller 53 moves upwards, the cloth can be prevented from being loosened too much. Wherein, only a process of coordinating each component to realize the lifting and conveying of the cloth 10 is introduced here, on the basis of the components of the utility model, other modes of coordinating each component can also be adopted to make the lifting and conveying processes of the cloth 10 smoothly proceed. In use, the left motor 31, the left air cylinder 36, the right motor 41, the right air cylinder 46 and the driving motor 55 can be connected to the same control circuit module, so that the control circuit module can coordinate the actions of the components. The control circuit module can adopt a singlechip.

As shown in fig. 1 and 5, the denim cutting system further includes a photoelectric liquid level sensor 7 and a control circuit module 8, the control circuit module 8 is disposed on the frame 1, and electrically connects the caustic soda liquid pump 62 with the control circuit module 8, the photoelectric liquid level sensor 7 is disposed on the upper side of the inner wall of the V-shaped groove 21, and electrically connects the photoelectric liquid level sensor 7 with the control circuit module 8. The photoelectric liquid level sensor 7 can be used for monitoring the liquid level height of liquid caustic soda in the V-shaped groove 21 and transmitting related information to the control circuit module 8; when the photoelectric liquid level sensor 7 feeds back that the liquid level drops to a set value to the control circuit module 8, the control circuit module 8 starts the liquid caustic soda pump 62, so that liquid caustic soda in the liquid caustic soda tank 61 is pumped into the V-shaped groove 21, and the aim of automatically supplementing liquid is fulfilled; when the photoelectric liquid level sensor 7 feeds back the liquid level to the control circuit module 8 and rises to a set value, the control circuit module 8 turns off the caustic soda liquid pump 62, so that the caustic soda liquid is automatically stopped from being conveyed to the caustic soda liquid tank 61; this enables the replenishment of the liquid caustic to be controlled automatically, which contributes to further improving the convenience of use of the denim cutting system. The control circuit module 8 can adopt a singlechip; the photoelectric liquid level sensor 7 adopts a photoelectric liquid level sensor with an alkali-resisting effect disclosed in the patent document with the patent application number of CN 201020026635.6; meanwhile, the photoelectric liquid level sensor 7 can also adopt other liquid level sensors with alkali-resisting effect in the prior art.

Claims

1. A denim cutting system is characterized in that: comprises a frame (1), a liquid caustic soda cylinder (2), a left guide device (3), a right guide device (4), a driving device (5) and a liquid supplementing device (6), wherein

The top of the liquid caustic soda cylinder (2) is provided with a V-shaped groove (21) for storing liquid caustic soda, and the liquid caustic soda cylinder (2) is arranged beside the rack (1);

the left guide device (3) comprises a left motor (31), a left belt (32), a left guide roller (33), a left nip roll (34), a left swing rod (35) and a left air cylinder (36), the left motor (31) is arranged on the rack (1), the left motor (31) is positioned on the left side of the liquid caustic soda cylinder (2), the left guide roller (33) is arranged on the rack (1), the left guide roller (33) is positioned on the upper left side of the liquid caustic soda cylinder (2), the left guide roller (33) is also in driving connection with the left motor (31) through the left belt (32), one end of the left swing rod (35) is hinged on the rack (1), the left nip roll (34) is arranged on the other end of the left swing rod (35) and is positioned above the left guide roller (33), the cylinder body of the left air cylinder (36) is hinged on the rack (1), the piston rod of the left air cylinder (36) is hinged in the middle of the left swing rod (35), the other end of the left swinging rod (35) can do up-and-down reciprocating motion through the driving of the left air cylinder (36), so that the left nip roll (34) can movably act on the left guide roll (33);

the right guide device (4) comprises a right motor (41), a right belt (42), a right guide roller (43), a right nip roll (44), a right swing rod (45) and a right air cylinder (46), the right motor (41) is arranged on the rack (1), the right motor (41) is positioned on the right side of the caustic soda liquid cylinder (2), the right guide roller (43) is arranged on the rack (1), the right guide roller (43) is positioned on the upper right side of the caustic soda liquid cylinder (2), the right guide roller (43) is also in driving connection with the right motor (41) through the right belt (42), one end of the right swing rod (45) is hinged on the rack (1), the right nip roll (44) is arranged on the other end of the right swing rod (45) and is positioned above the right guide roller (43), the cylinder body of the right air cylinder (46) is hinged on the rack (1), the piston rod of the right air cylinder (46) is hinged in the middle of the right swing rod (45), the other end of the right swinging rod (45) can do up-and-down reciprocating motion through the driving of the right air cylinder (46), so that the right nip roll (44) can movably act on the right guide roll (43);

the driving device (5) comprises a fixed block (51), a movable rod (52), a movable roller (53), a gear (54) and a driving motor (55), wherein the fixed block (51) is arranged on the rack (1) and is positioned right above the liquid caustic soda cylinder (2), a limit sliding groove (511) which vertically extends is formed in the fixed block (51), the movable rod (52) is vertically arranged in the limit sliding groove (511) and can enable the movable rod (52) to vertically slide in the limit sliding groove (511), a rack part (521) which vertically extends is formed in the outer wall of the movable rod (52), the driving motor (55) is arranged on the rack (1), the gear (54) is arranged on a power output shaft of the driving motor (55) and is meshed with the rack part (521), the movable roller (53) is arranged on the end part of the lower end of the movable rod (52), and the movable roller (53) is positioned in the V-shaped groove (21);

liquid supplementing device (6) are including liquid caustic soda jar (61), liquid caustic soda pump (62), liquid caustic soda pipe (63), liquid caustic soda jar (61) are arranged by liquid caustic soda jar (2) side, liquid caustic soda pipe (63) one end is connected on liquid caustic soda jar (61), liquid caustic soda pipe (63) other end stretches into to V type groove (21) in, liquid caustic soda pump (62) are arranged by liquid caustic jar (2) side to make liquid caustic soda pump (62) concatenate on liquid caustic soda pipe (63).

2. The denim cutting system according to claim 1, wherein: still include photoelectric liquid level sensor (7), control circuit module (8) set up in frame (1) to make liquid caustic soda pump (62) be connected with control circuit module (8) looks electricity, photoelectric liquid level sensor (7) set up the inner wall upside in V type groove (21), and make photoelectric liquid level sensor (7) be connected with control circuit module (8) looks electricity.