阅读说明：本技术 一种带超喂装置的定型机 (Forming machine with overfeeding device ) 是由 范明贵 张国平 于 2021-09-17 设计创作，主要内容包括：本申请涉及一种带超喂装置的定型机,包括机体和设置在机体上料一端的上料架,所述上料架朝向机体一端设置有超喂机构,所述超喂机构包括进布辊、出布辊、进布电机、出布电机和检测器,所述进布辊转动设置在上料架上,所述出布辊于进布辊朝向机体一侧转动设置在上料架上,所述进布电机安装在上料架上,进布电机驱动进布辊转动,所述出布电机安装在上料架上,出布电机驱动出布辊转动,所述检测器安装在进布辊和出布辊之间,检测器用于检测进布辊和出布辊之间面料张紧度。本申请具有降低残次品的产出的概率的效果。(The utility model relates to a take forming machine of overfeed device, including organism and the last work or material rest of setting in organism material loading one end, it is provided with overfeed mechanism towards organism one end to go up the work or material rest, overfeed mechanism includes cloth feeding roller, cloth discharging roller, advances cloth motor, play cloth motor and detector, the cloth feeding roller rotates and sets up on last work or material rest, the cloth discharging roller rotates in cloth feeding roller towards organism one side and sets up on last work or material rest, the cloth feeding motor is installed on last work or material rest, and the cloth feeding motor drive cloth feeding roller rotates, the cloth discharging motor is installed on last work or material rest, and the cloth discharging motor drive cloth discharging roller rotates, the detector is installed between cloth feeding roller and cloth discharging roller, and the detector is used for detecting the surface fabric rate of tension between cloth feeding roller and the cloth discharging roller. This application has the effect of the probability that reduces the output of wastrel.)

1. The utility model provides a take forming machine of overfeed device, includes organism (1) and sets up last work or material rest (2) in organism (1) material loading one end, its characterized in that: an overfeeding mechanism (3) is arranged at one end of the feeding frame (2) facing the machine body (1), the overfeeding mechanism (3) comprises a cloth feeding roller (31), a cloth discharging roller (32), a cloth feeding motor (33), a cloth discharging motor (34) and a detector (35), the cloth feeding roller (31) is rotationally arranged on the material loading frame (2), the cloth discharging roller (32) is rotationally arranged on the material loading frame (2) at one side of the cloth feeding roller (31) facing the machine body (1), the cloth feeding motor (33) is arranged on the material loading frame (2), the cloth feeding motor (33) drives the cloth feeding roller (31) to rotate, the cloth discharging motor (34) is arranged on the material loading frame (2), the cloth discharging motor (34) drives the cloth discharging roller (32) to rotate, the detector (35) is arranged between the cloth feeding roller (31) and the cloth discharging roller (32), and the detector (35) is used for detecting the fabric tension between the cloth feeding roller (31) and the cloth discharging roller (32).

2. The setting machine with an overfeed device as claimed in claim 1, wherein: the cloth feeding roller (31) comprises a rotating rod (311) and a roller body (312), the rotating rod (311) is rotatably arranged on the upper material frame (2), the rotating rod (311) is slidably arranged on the upper material frame (2) along the axis direction of the rotating rod (311), the roller body (312) is sleeved on the rotating rod (311), the rotating rod (311) drives the roller body (312) to rotate, a driving mechanism (4) is arranged between the cloth feeding motor (33) and the cloth feeding roller (31), the driving mechanism (4) comprises a driving gear (41) and a driven gear (42), the driving gear (41) is fixedly arranged on a rotating shaft of the cloth feeding motor (33), the driven gear (42) is sleeved on the rotating rod (311), the driven gear (42) is meshed with the driving gear (41) and is rotatably arranged on the upper material frame (2), and a linkage mechanism (5) is arranged between the rotating rod (311) and the cloth discharging roller (32), link gear (5) include driving pulley (51), driven pulley (52) and hold-in range (53), driving pulley (51) set firmly in draw-out roller (32) one end, driven pulley (52) cover is established and is kept away from cover and be equipped with driven gear (42) one end at bull stick (311), driven pulley (52) rotate and set up on last work or material rest (2), hold-in range (53) cover is established on driving pulley (51) and driven pulley (52), and bull stick (311) slide and driven pulley (52) or driven gear (42) reciprocal anchorage.

3. The setting machine with an overfeed device as claimed in claim 2, wherein: go up and be provided with two sets of drive assembly (6) on work or material rest (2), it is two sets of drive assembly (6) set up on last work or material rest (2) in bull stick (311) length direction both ends respectively, drive assembly (6) are including driving frame (61) and driving piece (62), driving frame (61) set firmly on last work or material rest (2), driving piece (62) are installed on driving frame (61), and driving piece (62) set up in bull stick (311) length direction one end, and driving piece (62) drive bull stick (311) are towards keeping away from driving piece (62) direction and are slided.

4. The setting machine with an overfeed device as claimed in claim 1, wherein: go up and be provided with straining device (7) on work or material rest (2), straining device (7) include guide roll (71), tensioning frame (72) and tensioning roller (73), guide roll (71) have a plurality ofly, and a plurality of guide roll (71) rotate along last work or material rest (2) length direction and set up on last work or material rest (2), tensioning frame (72) set up in guide roll (71) towards ground one side, and tensioning frame (72) slide and set up on last work or material rest (2), and tensioning frame (72) orientation is close to or keeps away from guide roll (71) direction and slides, tensioning roller (73) have a plurality ofly, and a plurality of tensioning roller (73) evenly set up along tensioning frame (72) length direction, and tensioning roller (73) and guide roll (71) dislocation set each other.

5. The setting machine with an overfeed device as claimed in claim 4, wherein: go up work or material rest (2) and set firmly guide bar (8), guide bar (8) vertical setting, guide bar (8) are kept away from to set firmly and are run through tensioning frame (72) in last work or material rest (2) one end, and tensioning frame (72) slide along guide bar (8).

6. The setting machine with an overfeed device as claimed in claim 5, wherein: the guide rod (8) is sleeved with an elastic part (9), one end of the elastic part (9) is abutted to the upper material frame (2), and the other end of the elastic part is abutted to the tensioning frame (72).

7. The setting machine with an overfeed device as claimed in claim 6, wherein: straining device (7) deviate from organism (1) one side and are provided with detection mechanism (10), detection mechanism (10) are installed on last work or material rest (2), and detection mechanism (10) are including detecting platform (101), detection piece (102) and centre gripping subassembly (103), detecting platform (101) are installed on last work or material rest (2), detection piece (102) are inlayed and are established on detecting platform (101), centre gripping subassembly (103) are installed on last work or material rest (2) towards organism (1) one side in detection piece (102).

8. The setting machine with an overfeed device as claimed in claim 7, wherein: the clamping assembly (103) comprises a clamping frame (1031), a clamping cylinder (1032) and a clamping block (1033), the clamping frame (1031) is mounted on the upper material frame (2), the clamping cylinder (1032) is mounted on the clamping frame (1031), the clamping block (1033) is fixedly arranged on a piston rod of the clamping cylinder (1032), and the clamping cylinder (1032) drives the clamping block (1033) to slide towards the direction close to or far away from the detection platform (101).

9. The setting machine with an overfeed device as claimed in claim 8, wherein: detection platform (101) width direction both ends all are provided with guide roller (11), guide roller (11) rotate to set up on last work or material rest (2).

Technical Field

The application relates to the field of fabric production, in particular to a setting machine with an overfeeding device.

Background

The setting machine is a machine for industrial manufacturing and setting, and can be divided into a vamp setting machine, a sock setting machine and a fabric setting machine according to types. The fabric setting machine is one of widely applied devices of textile enterprises, and is mainly used for setting fabrics so as to facilitate subsequent processing of the fabrics.

The prior Chinese patent with publication number CN113106676A discloses a fabric setting machine, which comprises an unwinding mechanism, a hot drying mechanism and a winding mechanism which are sequentially arranged; the hot drying mechanism comprises a hot box, a fabric channel is arranged on the hot box, an electric heating plate, a plurality of rotating rollers and a feeding mechanism are arranged in the hot box in a vertically staggered mode, all the rotating rollers positioned below are connected to the hot box in a sliding mode along the vertical direction through sliding blocks, and a plurality of springs used for supporting the corresponding sliding blocks are further arranged in the hot box; the feeding mechanism comprises a moving frame which is arranged in the fabric channel in a sliding penetrating mode, and the sliding direction of the moving frame is the same as the extending direction of the fabric channel; the movable frame is provided with a clamping assembly for clamping the fabric; one side of the moving frame facing the winding mechanism is provided with a pushing surface which inclines downwards and is used for pushing the sliding block to descend.

Aiming at the related technologies, the inventor thinks that the existing setting machine carries out tensioning on the fabric by an uncoiling roller and a coiling roller, so that the width of the fabric is easily narrowed due to overlarge radial tension, the width of the fabric after setting is smaller than the required width, and defective products are produced.

Disclosure of Invention

In order to reduce the probability of the output of wastrel, this application provides a take forming machine of overfeed device.

The application provides a take forming machine of overfeed device adopts following technical scheme:

the utility model provides a take forming machine of overfeed device, includes the organism and sets up the last work or material rest in organism material loading one end, it is provided with overfeed mechanism towards organism one end to go up the work or material rest, overfeed mechanism includes cloth feeding roller, cloth discharging roller, advances cloth motor, goes out cloth motor and detector, the cloth feeding roller rotates and sets up on last work or material rest, the cloth discharging roller rotates in cloth feeding roller towards organism one side and sets up on last work or material rest, advance the cloth motor and install on last work or material rest, advance cloth motor drive cloth feeding roller and rotate, go out the cloth motor and install on last work or material rest, go out cloth motor drive cloth discharging roller and rotate, the detector is installed between cloth feeding roller and cloth discharging roller, and the detector is used for detecting the surface fabric rate of tension between cloth feeding roller and the cloth discharging roller.

By adopting the technical scheme, the tightness of the fabric is detected through the detector, and the rotation deviation of the fabric feeding roller and the fabric discharging roller is adjusted according to the tightness, so that the overfeeding function is realized, the tension of the fabric is controlled, and the probability that the fabric width is narrowed to produce defective products due to overlarge radial tension of the fabric is reduced.

Optionally, the cloth feeding roller comprises a rotating rod and a roller body, the rotating rod is rotatably arranged on the material feeding frame, the rotating rod is arranged on the material feeding frame in a sliding manner along the axis direction of the rotating rod, the roller body is sleeved on the rotating rod, the rotating rod drives the roller body to rotate, a driving mechanism is arranged between the cloth feeding motor and the cloth feeding roller, the driving mechanism comprises a driving gear and a driven gear, the driving gear is fixedly arranged on the rotating shaft of the cloth feeding motor, the driven gear is sleeved on the rotating rod, the driven gear is meshed with the driving gear and rotatably arranged on the material feeding frame, a linkage mechanism is arranged between the rotating rod and the cloth discharging roller, the linkage mechanism comprises a driving pulley, a driven pulley and a synchronous belt, the driving pulley is fixedly arranged at one end of the cloth discharging roller, the driven pulley is sleeved at one end of the rotating rod, which is far away from the driven gear, the driven pulley is rotatably arranged on the material feeding frame, the synchronous belt is sleeved on the driving pulley and the driven pulley, the rotating rod slides and is fixed with the driven belt wheel or the driven gear.

Through adopting above-mentioned technical scheme, slide through the drive bull stick and realize bull stick and driven pulley or driven gear reciprocal anchorage to the realization is to advancing cloth roller slew velocity's regulation.

Optionally, the feeding frame is provided with two sets of driving assemblies, the two sets of driving assemblies are respectively arranged on the feeding frame at two ends of the rotating rod in the length direction, each driving assembly comprises a driving frame and a driving piece, the driving frames are fixedly arranged on the feeding frame, the driving pieces are arranged on the driving frames, the driving pieces are arranged at one ends of the rotating rods in the length direction, and the driving pieces drive the rotating rods to slide towards the direction of keeping away from the driving pieces.

Through adopting above-mentioned technical scheme, the carriage erects the driving piece at bull stick length direction both ends, through the slip of driving piece drive bull stick, the convenient regulation to the bull stick slides.

Optionally, be provided with straining device on the material loading frame, straining device includes guide roll, tensioning frame and tensioning roller, the guide roll has a plurality ofly, and a plurality of guide rolls rotate along material loading frame length direction and set up on material loading frame, the tensioning frame sets up at guide roll towards ground one side, and the tensioning frame slides and sets up on material loading frame, and the tensioning frame slides towards being close to or keeping away from the guide roll direction, the tensioning roller has a plurality ofly, and a plurality of tensioning rollers evenly set up along tensioning frame length direction, tensioning roller and guide roll dislocation set each other.

By adopting the technical scheme, the tension degree of the fabric during conveying can be adjusted by the tension mechanism, and meanwhile, the fabric can be reserved after the fabric is uncoiled, so that the subsequent fabric can be conveniently connected.

Optionally, a guide rod is fixedly arranged on the feeding frame, the guide rod is vertically arranged, the guide rod is far away from and fixedly arranged at one end of the feeding frame, the tensioning frame penetrates through the feeding frame, and the tensioning frame slides along the guide rod.

Through adopting above-mentioned technical scheme, the tensioning frame can be guided in setting up of guide bar, reduces the tensioning frame slope and the dead probability of card.

Optionally, an elastic member is sleeved on the guide rod, one end of the elastic member abuts against the feeding frame, and the other end of the elastic member abuts against the tensioning frame.

Through adopting above-mentioned technical scheme, the setting of elastic component can the shock attenuation, reduces the surface fabric and carries the probability that makes tensioning frame slide fast and strike the work or material rest at the excessive speed.

Optionally, tensioning mechanism deviates from organism one side and is provided with detection mechanism, detection mechanism installs on last work or material rest, and detection mechanism includes testing platform, detection piece and centre gripping subassembly, testing platform installs on last work or material rest, detection piece inlays and establishes on testing platform, centre gripping subassembly is installed on last work or material rest in detection piece orientation organism one side.

By adopting the technical scheme, the detection mechanism can detect the fabric, clamp the fabric after the fabric is uncoiled, and do not need to penetrate the fabric when the fabric is subsequently spliced, so that the time for splicing the fabric is saved.

Optionally, the clamping assembly comprises a clamping frame, a clamping cylinder and a clamping block, the clamping frame is mounted on the feeding frame, the clamping cylinder is mounted on the clamping frame, the clamping block is fixedly arranged on a piston rod of the clamping cylinder, and the clamping cylinder drives the clamping block to slide towards the direction close to or far away from the detection platform.

Through adopting above-mentioned technical scheme, what detection piece can be given to the centre gripping subassembly, detects the surface fabric at the detection piece and opens a book the back, and the centre gripping subassembly makes things convenient for the continuation of surface fabric to the surface fabric centre gripping.

Optionally, the two ends of the width direction of the detection platform are provided with guide rollers, and the guide rollers are rotatably arranged on the feeding frame.

Through adopting above-mentioned technical scheme, the friction loss that fabric and testing platform are terminal can be reduced in setting up of guide roller, reduces the probability of fabric damage.

In summary, the present application includes at least one of the following beneficial technical effects:

the tightness of the fabric is detected through a detector, and the rotation deviation of the cloth inlet roller and the cloth outlet roller is adjusted according to the tightness, so that the overfeeding function is realized, the tension of the fabric is controlled, and the probability that the fabric width is narrowed due to the fact that the radial tension of the fabric is too large, and defective products are produced is reduced;

the rotating rod and the driven belt wheel or the driven gear are fixed mutually by driving the rotating rod to slide, so that the rotating speed of the cloth feeding roller is adjusted;

the tensioning mechanism can adjust the tension degree of the fabric during conveying, and can reserve the fabric after the fabric is uncoiled to facilitate the access of the subsequent fabric;

the detection mechanism can detect the fabric, clamps the fabric after the fabric is uncoiled, does not need to penetrate the fabric when the fabric is subsequently spliced, and saves the time for splicing the fabric.

Drawings

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

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of another view of the overall structure of the present embodiment.

Description of reference numerals: 1. a body; 2. a feeding frame; 3. an overfeed mechanism; 31. a cloth feeding roller; 311. a rotating rod; 312. a roller body; 32. a cloth outlet roller; 33. a cloth feeding motor; 34. a cloth discharging motor; 35. a detector; 4. a drive mechanism; 41. a driving gear; 42. a driven gear; 5. a linkage mechanism; 51. a driving pulley; 52. a driven pulley; 53. a synchronous belt; 6. a drive assembly; 61. a driving frame; 62. a drive member; 7. a tensioning mechanism; 71. a guide roller; 72. a tension frame; 73. a tension roller; 8. a guide bar; 9. an elastic member; 10. a detection mechanism; 101. a detection platform; 102. a detection member; 103. a clamping assembly; 1031. a clamping frame; 1032. a clamping cylinder; 1033. a clamping block; 11. and a material guide roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a setting machine with an overfeeding device, referring to fig. 1 and fig. 2, the setting machine comprises a machine body 1 for setting fabrics and an upper material frame 2 arranged at the feeding end of the machine body 1, the upper material frame 2 is two frame bodies arranged corresponding to the width direction of the machine body 1, an overfeeding mechanism 3 is arranged at one end of the upper material frame 2 facing the machine body 1, the overfeeding mechanism 3 comprises a cloth feeding roller 31 rotatably arranged on the upper material frame 2, a cloth discharging roller 32 rotatably arranged on one side of the cloth feeding roller 31 facing the machine body 1 on the upper material frame 2, a cloth feeding motor 33 arranged on the upper material frame 2, a cloth discharging motor 34 arranged on the upper material frame 2 and a detector 35 arranged between the cloth feeding roller 31 and the cloth discharging roller 32, the cloth feeding motor 33 drives the cloth feeding roller 31 to rotate, the cloth discharging motor 34 drives the cloth discharging roller 32 to rotate, the detector 35 is an image recognizer, the image recognizer is erected on the upper material frame 2 through a door type frame and faces the direction for image recognition, the detector 35 is used for detecting the tension of the fabric between the fabric feeding roller 31 and the fabric discharging roller 32, the width of the fabric in the image recognition instrument is narrowed when the fabric is too tensioned, and an operator is warned, so that the probability of the output of defective products is reduced.

Referring to fig. 2 and 3, the cloth feeding roller 31 includes a rotating rod 311 rotatably disposed on the feeding frame 2 and a roller body 312 sleeved on the rotating rod 311, the rotating rod 311 is slidably disposed on the feeding frame 2 along the axial direction of the rotating rod 311, the roller body 312 is sleeved on the rotating rod 311 and slidably moved on the rotating rod 311 through a key connection and rotates along with the rotating rod 311, a driving mechanism 4 is disposed between the cloth feeding motor 33 and the cloth feeding roller 31, the driving mechanism 4 includes a driving gear 41 fixedly disposed on the rotating shaft of the cloth feeding motor 33 and a driven gear 42 sleeved on the rotating rod 311, the driven gear 42 is engaged with the driving gear 41 and rotatably disposed on the feeding frame 2, a linkage mechanism 5 is disposed between the rotating rod 311 and the cloth discharging roller 32, the linkage mechanism 5 includes a driving pulley 51 fixedly disposed at one end of the cloth discharging roller 32, a driven pulley 52 sleeved on the rotating rod 311 far away from the end where the driven gear 42 is sleeved, and a synchronous belt 53 sleeved on the driving pulley 51 and the driven pulley 52, the driven belt wheel 52 is rotatably arranged on the feeding frame 2, the driven gear 42 and the driven belt wheel 52 are in key connection with the rotating rod 311, the rotating rod 311 is connected with one key of the driven belt wheel 52 or the driven gear 42 through sliding and fixed with each other, the rotating speed of the cloth feeding motor 33 is higher than that of the cloth discharging motor 34, when the rotating rod 311 slides to enable the rotating rod 311 and the driven gear 42 to be fixedly connected with each other, the cloth feeding motor 33 drives the cloth feeding roller 31 to rotate, at the moment, the rotating speed of the cloth feeding roller 31 is higher than that of the cloth discharging roller 32 to realize overfeeding, when the rotating rod 311 slides to enable the rotating rod 311 and the driven belt wheel 52 to be fixedly connected with each other, the cloth feeding roller 31 and the cloth discharging roller 32 are driven by the synchronous belt 53 of the cloth discharging motor 34, at the moment, the rotating speed of the cloth feeding roller 31 is the same as that of the cloth discharging roller 32, normal conveying of the fabric after the overfeeding is finished is realized, and the tension of the fabric is kept; go up and be provided with two sets of drive assembly 6 on work or material rest 2, two sets of drive assembly 6 set up on last work or material rest 2 respectively in bull stick 311 length direction both ends, drive assembly 6 is including setting firmly the carriage 61 on last work or material rest 2 and installing the driving piece 62 on carriage 61, carriage 61 sets firmly on last work or material rest 2 for L shape frame one end, the other end extends to bull stick 311 length direction one end, driving piece 62 is actuating cylinder, actuating cylinder body installs on carriage 61, actuating cylinder piston rod is towards bull stick 311, piston rod lifting through actuating cylinder drives bull stick 311 and is kept away from actuating cylinder direction and slides, drive actuating cylinder through both ends drives bull stick 311 and slides, realize bull stick 311 with driven gear 42 fixed connection and with the conversion of driven pulley 52 fixed connection two kinds of states.

Referring to fig. 1, a tensioning mechanism 7 is arranged on a feeding frame 2, the tensioning mechanism 7 comprises a plurality of guide rollers 71 rotatably arranged on the feeding frame 2 along the length direction of the feeding frame 2, a tensioning frame 72 arranged on one side of the guide rollers 71 facing the ground and a plurality of tensioning rollers 73 uniformly arranged along the length direction of the tensioning frame 72, a sliding groove is formed in the feeding frame 2, a sliding block is fixedly arranged on the tensioning frame 72 corresponding to the sliding groove, the sliding block is arranged in the sliding groove in a sliding manner, the tensioning frame 72 is arranged on the feeding frame 2 in a sliding manner through the matching of the sliding block and the sliding groove, the tensioning frame 72 slides towards the direction close to or far away from the guide rollers 71, and the tensioning rollers 73 and the guide rollers 71 are arranged in a staggered manner; a guide rod 8 is fixedly arranged on the upper material rack 2, the guide rod 8 is vertically arranged, the guide rod 8 penetrates through a tensioning frame 72 far away from one end fixedly arranged on the upper material rack 2, the tensioning frame 72 slides along the guide rod 8, a limiting block is connected to one end of the guide rod 8 penetrating through the tensioning frame 72 through threads, and the limiting block limits the tensioning frame 72 to be separated from the guide rod 8; the guide rod 8 is sleeved with an elastic part 9, one end of the elastic part 9 is abutted to the feeding frame 2, the other end of the elastic part 9 is abutted to the tensioning frame 72, and the elastic part 9 reduces the probability that the feeding frame 2 is damaged due to the fact that the tensioning frame 72 slides in an overlarge range and impacts the feeding frame 2 due to the elasticity of the spring.

Referring to fig. 1, a detection mechanism 10 is arranged on one side of the tensioning mechanism 7, which is away from the machine body 1, the detection mechanism 10 is installed on the loading frame 2, the detection mechanism 10 comprises a detection platform 101 installed on the loading frame 2, a detection piece 102 embedded on the detection platform 101, and a clamping component 103 installed on the loading frame 2 on one side of the detection piece 102, which faces the machine body 1, the detection piece 102 is an infrared detector and detects towards the table top, and when no fabric exists on the table top, the infrared detector drives the clamping component 103 to clamp the fabric; the clamping assembly 103 comprises a clamping frame 1031 arranged on the feeding frame 2, a clamping cylinder 1032 arranged on the clamping frame 1031 and a clamping block 1033 fixedly arranged on a piston rod of the clamping cylinder 1032, the clamping cylinder 1032 drives the clamping block 1033 to slide towards the direction close to or far away from the detection platform 101, and when the infrared detector detects that the fabric is uncoiled, the clamping cylinder 1032 drives the clamping block 1033 to clamp the fabric to limit the fabric to be conveyed continuously, so that the subsequent fabric splicing is facilitated, the spliced fabric does not need to be threaded again, and the splicing time of the fabric is saved; both ends of the width direction of the detection platform 101 are provided with guide rollers 11, and the guide rollers 11 are rotatably arranged on the upper material frame 2 and used for guiding the fabric to enter and leave the detection platform 101.

The implementation principle of the embodiment of the application is as follows: the uncoiled fabric sequentially passes through the detection mechanism 10, the tensioning mechanism 7 and the overfeeding mechanism 3 and then is sent into the machine body 1 for shaping; the fabric is arranged between a tension roller 73 and a guide roller 71 of the tension mechanism 7, and a tension frame 72 is driven to slide by the tension force transmitted by the fabric, so that the tension degree of the fabric is adjusted; when the fabric passes through the overfeeding mechanism 3, the fabric normally passes through the fabric feeding roller 31 and the fabric discharging roller 32, the detector 35 is started, at the moment, the width of the fabric is detected by the detector 35 in a tight state, at the moment, the driving piece 62 drives the rotating rod 311 to fixedly connect the rotating rod 311 with the driven gear 42, the rotating speed of the fabric feeding roller 31 is greater than that of the fabric discharging roller 32 to realize overfeeding, and when the overfeeding is carried out until the tension of the fabric reaches the standard with proper width, the driving piece 62 drives the rotating rod 311 to fixedly connect with the driven belt wheel 52, so that the fabric feeding roller 31 and the fabric discharging roller 32 are synchronously conveyed; when the detecting piece 102 detects that the fabric is completely uncoiled, the clamping assembly 103 clamps the fabric, the fabric feeding motor 33, the fabric discharging motor 34 and the machine body 1 stop working at the same time, and after the belt fabric is continuously connected, the fabric feeding motor 33, the fabric discharging motor 34 and the machine body 1 are started to continue working.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.