Positioning device for cutting double-sided composite flannelette

Abstract

The utility model discloses a positioning device for cutting double-sided composite flannelette, which relates to the technical field of cloth processing and comprises a passive belt conveyor, a cloth conveying unit and a cutting positioning unit. The belt conveyor is provided with the reliable cloth conveying unit, and the silica gel protruding blocks on the outer side of the belt body of the belt conveyor can effectively grab flannelette fabric and can effectively stir the flannelette fabric to be conveyed; in the conveying process, two adjacent small motors rotate in different directions, transmission rods are stirred through gears to longitudinally slide in a mounting rod frame, the transmission rods on the front side and the rear side push push plates at the ends to be close to each other, then the conveyed flannelette fabric can be conveyed in the middle, and follow-up cutting operation is facilitated; and a reliable positioning function is achieved, and a reliable positioning effect is achieved in the two processes of lint starting end conveying and lint cutting operation, so that the accuracy of the cutting length can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of fabric processing technology, specifically a positioning device for cutting double-sided composite fleece. Background Technology

[0002] Double-sided composite fleece uses two independent fabrics connected by yarn in the middle to form a two-layer but soft structure with high warmth retention, which is favored by consumers. On clothing production lines that use double-sided composite fleece as raw material, rolls of fabric need to be cut into batches of fabric pieces, so cutting equipment is required.

[0003] Existing cutting devices for double-sided composite fleece fabrics suffer from several drawbacks. Firstly, the smooth surface of the fleece fabric makes it difficult for traditional rollers to effectively transport the fabric, and secondly, the lack of a centered conveying function during transport negatively impacts subsequent cutting operations. Furthermore, the absence of a matching positioning component prevents effective positioning of the fabric ends and subsequent cutting positions, leading to inaccurate cutting lengths and waste at the fabric ends. Therefore, we propose a positioning device for cutting double-sided composite fleece fabrics. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a positioning device for cutting double-sided composite fleece fabric. This device features a reliable fabric conveying unit. Silicone protrusions on the outer side of the belt conveyor effectively grip and move the fleece fabric for transport. During transport, two adjacent small motors rotate in opposite directions, driving a transmission rod to slide longitudinally within the mounting frame via gears. The transmission rods on the front and rear sides push the end plates together, thus centering the fleece fabric for subsequent cutting operations. Furthermore, it has a reliable positioning function, providing reliable positioning during both the initial transport of the fleece fabric and the cutting process, ensuring accurate cutting length and effectively solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for cutting double-sided composite fleece, comprising a passive belt conveyor, a fabric conveying unit, and a cutting positioning unit;

[0006] Passive belt conveyor: It consists of a horizontally arranged belt, an inner rotating frame, and baffles at the front and rear ends. The belt has a racetrack-shaped structure and is tightly fitted onto the outside of the inner rotating frame.

[0007] Fabric conveying unit: includes mounting brackets, transmission rods, push plates, gears, small motors, infrared sensors, and controllers. The passive belt conveyor has two transverse mounting brackets installed at the upper middle right position. The mounting brackets have cross-shaped slots inside, with a longitudinal transmission rod slidably connected to the middle of each slot. Each transmission rod has a row of toothed grooves on both sides, and a gear is installed on each side of the cross-shaped slot. The gears mesh with the toothed grooves on the side of the transmission rod. The upper end of the mounting brackets is fixedly fitted with the controller and two small motors. The output shafts of the small motors face downwards and are fixedly connected to the center of the gears. A T-shaped, inverted push plate is fixedly connected to the opposite end of each of the two transmission rods. A vertical infrared sensor is embedded on the right side of the push plate, with the transmitter and receiver of the infrared sensor embedded on the right edge of each of the two push plates.

[0008] Cutting and positioning unit: installed at the upper middle part of the passive belt conveyor.

[0009] The controller controls two adjacent small motors to rotate in opposite directions. The small motors drive the gears inside the mounting frame to rotate. The gears mesh with the toothed grooves on the side of the transmission rod, which in turn causes the transmission rod to slide longitudinally inside the mounting frame. The transmission rods on the front and rear sides push the push plates at their ends to move closer together, thus centering the conveyed velvet fabric. When the end of the conveyed velvet fabric reaches the movable plate on the right, the light emitted by the infrared sensor is blocked, indicating that the end of the velvet fabric and the movable plate on the right are on the same vertical plane. Subsequently, the PLC controller controls the two belt conveyors to stop working in order to perform the subsequent cutting operation of the velvet fabric.

[0010] Furthermore, the fabric conveying unit also includes a mounting frame, hydraulic cylinders, a movable frame, and a belt conveyor. The passive belt conveyor has two mounting frames on the left and right sides above it. The lower end of the mounting frame is slidably connected to the movable frame. The movable frame is hollow inside. Two hydraulic cylinders are embedded in the mounting frame. The telescopic ends of the hydraulic cylinders face downward and are fixedly connected to the inner bottom side of the movable frame. Each movable frame has a belt conveyor installed at its lower end. The end of the belt conveyor is flush with the inner side of the movable frame, and the other end of the belt conveyor extends horizontally outward. The belt surface of the belt conveyor is equidistantly equipped with multiple rows of silicone protrusions. The mounting frame is used for installing the movable frame. The hydraulic cylinder drives the movable frame to slide vertically at the lower end of the mounting frame. When the movable frame descends, it can press the lower end of the belt conveyor against the surface of the fleece fabric. The silicone protrusions on the outside of the belt conveyor can effectively grab the fleece fabric and effectively move the fleece fabric for conveying. At the beginning of the operation, the end of the fleece fabric is first inserted into the lower side of the left belt conveyor. The left belt conveyor continuously conveys the fabric to the right. The belt body of the passive belt conveyor can rotate on its own under the action of friction to reduce the frictional resistance on the lower side of the fabric during the conveying of the fleece fabric.

[0011] Furthermore, the cutting and positioning unit also includes a mounting frame, a lead screw, a suspension rod, a longitudinal slide, and locking blocks. The two ends of the mounting frame are fixedly connected to the upper middle of the left and right mounting plates, respectively. A horizontal lead screw is installed inside the mounting frame. The nut of the lead screw is square, and a vertical suspension rod is fixedly connected to the lower side of the nut. The longitudinal slide is installed on the lower right side of the suspension rod. Two triangular locking blocks are fixedly connected to the middle of the left side of the longitudinal slide. The two locking blocks clamp the outside of the suspension rod and are fixed to the suspension rod by welding. A PLC controller is embedded in the middle of the front side of the mounting frame. The mounting frame is used for installing the lead screw, which drives the suspension rod to adjust its lateral position. The suspension rod is used for installing the longitudinal slide. The locking blocks clamp the outside, providing initial locking. The longitudinal slide can be fixed to the lower right side of the suspension rod by welding.

[0012] Furthermore, the fabric conveying unit includes a second lead screw, a distance sensor, and an ultrasonic cutter. The longitudinal slide houses the second longitudinal lead screw, whose nut is also square. An ultrasonic cutter is mounted on the lower side of the second lead screw, and a distance sensor is mounted on the upper end of the square nut, with its detection end facing horizontally to the right. When the infrared sensor's light is blocked, it indicates that the end of the fleece fabric is flush with the inner end face of the right-side movable plate. Using the inner end face of the movable plate as a reference plane, the distance sensor can detect the distance to the reference plane in real time. The upper lead screw can drive the cutter assembly to adjust the distance to the reference plane, and preset data can be used to bring the cutter assembly to a given position. The second lead screw drives the lower ultrasonic cutter to move longitudinally, completing the positioning and cutting of the fleece fabric.

[0013] Furthermore, the fabric conveying unit also includes a lifting frame and fixing blocks. Two lifting frames are fixedly connected to opposite sides of the left and right movable plates. Each lifting frame consists of two diagonally fixed sections. The outer end of the belt conveyor is fixed to the lower diagonal end of the lifting frame via an outer insert rod, and the inner end of the belt conveyor is fixed to the lower extension blocks on the front and rear sides of the movable plates via insert rods. One end of the mounting rod rests against the front and rear end faces of the movable plates. The fixing block is Ω-shaped, protecting the outer side of the end of the mounting rod, and both ends of the fixing block are fixedly connected to the movable plates with bolts. The lifting frame is used to lift the outer end of the belt conveyor. The diagonally fixed frame structure provides good stability, ensuring both belt conveyors remain horizontal and stable. The fixing blocks are used to secure the mounting rod to the front and rear sides of the movable plates.

[0014] Furthermore, it also includes mounting brackets and fixed feet. An L-shaped mounting bracket is fixedly connected to both the front and rear ends of the mounting plate frame. The vertical section of the mounting bracket faces downwards, and a fixed foot is fixedly connected to its lower end. The fixed foot is fixedly connected to the retaining frames on the front and rear sides of the passive belt conveyor by bolts. The mounting brackets support the mounting plate frame, and the fixed feet are secured with bolts, thus achieving the installation and fixation of the mounting plate frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This positioning device for cutting double-sided composite fleece fabric has the following advantages:

[0016] 1. It has a reliable fabric conveying unit. The silicone protrusions on the outside of the belt conveyor can effectively grab the fleece fabric and effectively move the fleece fabric for conveying. During the conveying process, two adjacent small motors rotate in opposite directions, and the transmission rods slide longitudinally inside the mounting frame through the gears. The transmission rods on the front and rear sides push the push plates at the ends to move closer to each other, so that the conveyed fleece fabric can be conveyed in the center, which is convenient for subsequent cutting operations.

[0017] 2. It has a reliable positioning function, providing reliable positioning during both the initial conveying and cutting of the velvet fabric, thus ensuring the accuracy of the cutting length: When the end of the conveyed velvet fabric reaches the movable plate on the right, the light emitted by the infrared sensor is blocked, indicating that the end of the velvet fabric and the movable plate on the right are on the same vertical plane. Subsequently, the PLC controller controls the two belt conveyors to stop working in order to perform the subsequent cutting operation of the velvet fabric; the first lead screw is used to drive the hanger to adjust the lateral position. With the inner end face of the movable plate as the reference plane, the distance sensor can detect the distance to the reference plane in real time. The upper lead screw can drive the tool assembly to adjust the distance between the tool assembly and the reference plane, and the tool assembly can be moved to a given position by preset data. The second lead screw drives the lower ultrasonic cutting blade to move longitudinally, completing the positioning and cutting of the velvet fabric.

[0018] 3. This utility model has a reliable fabric conveying unit. The silicone protrusions on the outer side of the belt conveyor can effectively grab the fleece fabric and effectively move the fleece fabric for conveying. During the conveying process, two adjacent small motors rotate in opposite directions, and through gears, the transmission rods slide longitudinally inside the mounting frame. The transmission rods on the front and rear sides push the push plates at the ends to move closer to each other, thereby enabling the conveyed fleece fabric to be conveyed in the center, which is convenient for subsequent cutting operations. It also has a reliable positioning function, which has a reliable positioning effect in both the conveying of the fleece fabric at the beginning and the fleece fabric cutting operation, thereby ensuring the accuracy of the cutting length. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the upper structure of this utility model;

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This utility model Figure 3 Enlarged view of the structure at point B in the middle.

[0024] In the diagram: 1 Passive belt conveyor, 2 Fabric conveying unit, 21 Mounting plate frame, 22 Hydraulic cylinder, 23 Movable plate frame, 24 Belt conveyor, 25 Lifting frame, 26 Mounting rod frame, 27 Transmission rod, 28 Push plate, 29 Gear, 210 Small motor, 211 Infrared sensor, 212 Controller, 213 Fixing block, 3 Cutting positioning unit, 31 Mounting crossbeam, 32 Lead screw one, 33 Lifting rod, 34 Longitudinal slide, 35 Clamping block, 36 Lead screw two, 37 Distance sensor, 38 Ultrasonic cutting blade, 4 Mounting bracket, 5 Fixed foot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 This embodiment provides a technical solution: a positioning device for cutting double-sided composite fleece, including a passive belt conveyor 1, a fabric conveying unit 2, and a cutting positioning unit 3;

[0027] Passive belt conveyor 1: It consists of a horizontally arranged belt, an inner rotating frame, and baffles at both ends. The belt has a racetrack-shaped structure and is tightly fitted onto the outside of the inner rotating frame.

[0028] Fabric conveying unit 2: includes mounting brackets 26, transmission rods 27, push plates 28, gears 29, small motors 210, infrared sensors 211, and controllers 212. Two transverse mounting brackets 26 are installed at the upper middle right position of the passive belt conveyor 1. The mounting brackets 26 have cross-shaped grooves inside. A longitudinal transmission rod 27 is slidably connected to the middle of the groove. A row of toothed grooves is opened on both the left and right sides of the transmission rod 27. A gear 29 is installed on each of the left and right parts of the cross-shaped groove. The wheel 29 is meshed with the tooth groove on the side of the transmission rod 27. The upper end of the mounting bracket 26 is fixedly equipped with a controller 212 and two small motors 210 on the left and right. The output shaft of the small motor 210 faces downward and is fixedly connected to the center of the gear 29. A T-shaped and inverted push plate 28 is fixedly connected to the opposite end of the front and rear transmission rods 27. A vertical infrared sensor 211 is embedded in the right side of the push plate 28. The transmitting end and receiving end of the infrared sensor 211 are respectively embedded in the right edge of the front and rear push plates 28.

[0029] Cutting and positioning unit 3: installed at the upper middle part of the passive belt conveyor 1.

[0030] The controller 212 controls two adjacent small motors 210 to rotate in opposite directions. The small motors 210 drive the gears 29 inside the mounting bracket 26 to rotate. The gears 29 mesh with the toothed grooves on the side of the transmission rod 27, thereby causing the transmission rod 27 to slide longitudinally inside the mounting bracket 26. The transmission rods 27 on the front and rear sides push the push plates 28 at their ends to move closer together, thereby enabling the conveyed velvet fabric to be conveyed in the center. When the end of the conveyed velvet fabric reaches the movable plate 23 on the right, the light emitted by the infrared sensor 211 is blocked, indicating that the end of the velvet fabric and the movable plate 23 on the right are on the same vertical plane. Subsequently, the PLC controller controls the two belt conveyors 24 to stop working in order to perform the subsequent cutting operation of the velvet fabric.

[0031] The fabric conveying unit 2 also includes a mounting frame 21, a hydraulic cylinder 22, a movable frame 23, and a belt conveyor 24. The passive belt conveyor 1 has two mounting frames 21 on the left and right sides above it. The lower end of the mounting frame 21 is slidably connected to the movable frame 23. The movable frame 23 is hollow inside. Two hydraulic cylinders 22 are embedded inside the mounting frame 21. The telescopic ends of the hydraulic cylinders 22 face downward and are fixedly connected to the bottom inside of the movable frame 23. Each movable frame 23 has a belt conveyor 24 installed at its lower end. The end of the belt conveyor 24 is flush with the inner side of the movable frame 23. The other end of the belt conveyor 24 is horizontally outward. Multiple rows of silicone bumps are evenly installed on the belt surface of the belt conveyor 24. Mounting frame 21 is used for mounting movable frame 23. Hydraulic cylinder 22 drives movable frame 23 to slide vertically at the lower end of mounting frame 21. When movable frame 23 descends, it can press the lower end of belt conveyor 24 against the surface of the fleece fabric. The silicone protrusions on the outer side of belt conveyor 24 can effectively grab the fleece fabric and effectively move the fleece fabric for conveying. At the beginning of the operation, the end of the fleece is first inserted into the lower side of the left belt conveyor 24. The left belt conveyor 24 continuously conveys the fabric to the right. The belt body of passive belt conveyor 1 can rotate on its own under the action of friction to reduce the frictional resistance on the lower side of the fabric during the conveying of the fleece.

[0032] The cutting positioning unit 3 also includes a mounting frame 31, a lead screw 32, a lifting rod 33, a longitudinal slide 34, and a locking block 35. The two ends of the mounting frame 31 are fixedly connected to the upper middle of the left and right mounting plates 21, respectively. The mounting frame 31 has a horizontal lead screw 32 installed inside. The nut of the lead screw 32 has a square structure, and a vertical lifting rod 33 is fixedly connected to the lower side of the nut. The longitudinal slide 34 is installed on the lower right side of the lifting rod 33. Two triangular locking blocks 35 are fixedly connected to the middle left side of the longitudinal slide 34. The two locking blocks 35 are clamped on the outside of the lifting rod 33 and fixed to the lifting rod 33 by welding. A PLC controller is embedded in the middle front side of the mounting frame 31. The mounting bracket 31 is used for the installation of the lead screw 32. The lead screw 32 is used to drive the hanger 33 to adjust its lateral position. The hanger 33 is used for the installation of the longitudinal slide 34. The clamping block 35 is held on the outside, which plays a preliminary locking role. The longitudinal slide 34 can be installed and fixed on the lower right side of the hanger 33 by welding.

[0033] The fabric conveying unit 2 includes a second lead screw 36, a distance sensor 37, and an ultrasonic cutter 38. The second lead screw 36 is installed inside the longitudinal carriage 34. The nut of the second lead screw 36 is also square, and the ultrasonic cutter 38 is installed on its lower side. The distance sensor 37 is installed on the upper end of the square nut, with its detection end facing horizontally to the right. When the light from the infrared sensor 211 is blocked, it indicates that the end of the fleece fabric is flush with the inner end face of the right movable plate 23. Using the inner end face of the movable plate 23 as a reference plane, the distance sensor 37 can detect the distance to the reference plane in real time. The upper lead screw 32 can drive the cutter assembly to adjust the distance between it and the reference plane. Preset data can be used to bring the cutter assembly to a given position. The second lead screw 36 drives the lower ultrasonic cutter 38 to move longitudinally, completing the positioning and cutting of the fleece fabric.

[0034] The fabric conveying unit 2 also includes a hoisting frame 25 and a fixing block 213. Two hoisting frames 25 are fixedly connected to the opposite sides of the left and right movable plate frames 23. The hoisting frame 25 is composed of two dry bodies that are fixedly connected at an angle. The outer end of the belt conveyor 24 is inserted and fixed to the lower end of the hoisting frame 25 through an outer insert rod. The inner end of the belt conveyor 24 is inserted and fixed to the lower extension blocks on the front and rear sides of the movable plate frame 23 through an insert rod. One end of the mounting rod 26 is attached to the front and rear end faces of the movable plate frame 23. The fixing block 213 is Ω-shaped and is wrapped around the outer side of the end of the mounting rod 26. Both ends of the fixing block 213 are fixedly connected to the movable plate frame 23 by bolts. The hoisting frame 25 is used to hoist the outer end of the belt conveyor 24. The frame with two rods fixedly connected at an angle has good stability, so that both belt conveyors 24 remain horizontal and stable. The fixing block 213 is used to install and fix the mounting rod 26 to the front and rear sides of the movable plate frame 23.

[0035] It also includes mounting brackets 4 and fixed feet 5. An L-shaped mounting bracket 4 is fixedly connected to both the front and rear ends of the mounting plate frame 21. The vertical section of the mounting bracket 4 faces downwards, and a fixed foot 5 is fixedly connected to its lower end. The fixed foot 5 is fixedly connected to the retaining frames on the front and rear sides of the passive belt conveyor 1 by bolts. The mounting bracket 4 is used to support the mounting plate frame 21, and the fixed feet 5 are fixed by bolts, thus achieving the installation and fixation of the mounting plate frame 21.

[0036] The working principle of the positioning device for cutting double-sided composite fleece provided by this utility model is as follows: This device has a reliable fabric conveying unit 2, a mounting bracket 4 for supporting the mounting plate frame 21, and a fixing foot 5 for fixing by bolts, which can realize the installation and fixing of the mounting plate frame 21. The mounting plate frame 21 is used for the installation of the movable plate frame 23. The hydraulic cylinder 22 drives the movable plate frame 23 to slide vertically at the lower end of the mounting plate frame 21. When the movable plate frame 23 descends, it can press the lower end of the belt conveyor 24 against the surface of the fleece fabric. The silicone protrusions on the outer side of the belt conveyor 24 can effectively grab the fleece fabric and effectively move the fleece fabric for conveying. At the beginning of the operation, the end of the fleece fabric is first... The head is inserted into the lower side of the left belt conveyor 24, which continuously conveys the fabric to the right. The belt of the passive belt conveyor 1 can rotate on its own under the action of friction to reduce the frictional resistance on the lower side of the fabric during the conveying of the fleece. The controller 212 is used to control the opposite rotation of two adjacent small motors 210. The small motors 210 drive the gears 29 inside the mounting bracket 26 to rotate. The gears 29 mesh with the tooth grooves on the side of the transmission rod 27, which in turn can move the transmission rod 27 to slide longitudinally inside the mounting bracket 26. The transmission rods 27 on the front and rear sides push the push plates 28 at the ends to move closer to each other, which can make the conveyed fleece fabric conveyed in the center, which is convenient for subsequent cutting operations. This device also has a reliable positioning function, providing reliable positioning during both the initial conveying of the fleece fabric and the fleece fabric cutting operation, thus ensuring the accuracy of the cutting length: when the end of the conveyed fleece fabric reaches the movable plate 23 on the right, the light emitted by the infrared sensor 211 is blocked, indicating that the fleece fabric end and the movable plate 23 on the right are on the same vertical plane. Subsequently, the PLC controller controls the two belt conveyors 24 to stop working to perform the subsequent fleece fabric cutting operation; the mounting frame 31 is used for the installation of the lead screw 32, which is used to drive the suspension rod 33 to adjust its lateral position. The suspension rod 33 is used for the longitudinal slide 3. The installation of 4, with the clamp 35 holding the outer side, provides a preliminary locking effect. The longitudinal slide 34 can be installed and fixed to the lower right side of the hanger 33 by welding. When the light of the infrared sensor 211 is blocked, it indicates that the end of the velvet is flush with the inner end face of the right movable plate 23. With the inner end face of the movable plate 23 as the reference surface, the distance sensor 37 can detect the distance to the reference surface in real time. The upper lead screw 32 can drive the tool assembly to adjust the distance between it and the reference surface. The tool assembly can be moved to a given position by preset data. The lead screw 36 drives the lower ultrasonic cutting knife 38 to move longitudinally to complete the positioning and cutting of the velvet fabric.In addition, the hoisting frame 25 is used to hoist the outer end of the belt conveyor 24. The frame with the two rods fixedly connected at an angle has good stability, so that both belt conveyors 24 remain horizontal and stable. The fixing block 213 is used to install and fix the mounting rod 26 to the front and rear sides of the movable plate frame 23.

[0037] It is worth noting that the input terminals of the hydraulic cylinder 22, belt conveyor 24, lead screw 1 32, lead screw 2 36 and ultrasonic cutting blade 38 disclosed in the above embodiments are all electrically connected to the output terminal of the external power supply through the PLC controller. The small motor 210 is bidirectionally electrically connected to the PLC controller through the controller 212 on the adjacent side. The PLC controller controls the operation of the above electrical devices by controlling the switch group using a method commonly used in the prior art.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning device for cutting double-sided fleece, characterized in that: It comprises a passive belt conveyor (1), a cloth conveying unit (2) and a cutting positioning unit (3). The passive belt conveyor (1) is composed of a transversely arranged belt, an inner rotating frame and front and rear blocking frames, wherein the belt is in a runway-shaped structure and is tightly sleeved on the outer side of the inner rotating frame. The cloth conveying unit (2) comprises mounting rod frames (26), transmission rods (27), push plates (28), gears (29), small motors (210), infrared sensors (211) and controllers (212), two mounting rod frames (26) are installed on the right side of the middle part of the upper end of the passive belt conveyor (1), a cross-shaped through slot is formed in the inner part of the mounting rod frame (26), a longitudinal transmission rod (27) is slidably connected to the middle part of the through slot, a row of tooth grooves is formed on the left and right sides of the transmission rod (27), one gear (29) is installed on the left and right parts of the cross-shaped through slot, the gear (29) is in meshing connection with the tooth grooves on the side of the transmission rod (27), a controller (212) and two small motors (210) are fixedly installed on the upper end of the mounting rod frame (26), the output shaft of the small motor (210) is downwardly fixedly connected with the center part of the gear (29), one T-shaped and inverted push plate (28) is fixedly connected to the opposite end of each transmission rod (27), a vertical infrared sensor (211) is embeddedly installed on the right side of the push plate (28), and the emitting end and the receiving end of the infrared sensor (211) are embeddedly installed on the right side edges of the front and rear push plates (28). The cutting positioning unit (3) is installed on the middle part of the upper end of the passive belt conveyor (1).

2. The positioning device for cutting double face complex flannelette according to claim 1, characterized in that: The cloth conveying unit (2) further comprises mounting plate frames (21), hydraulic cylinders (22), movable plate frames (23) and belt conveyors (24), two mounting plate frames (21) are arranged above the passive belt conveyor (1), the lower end of the mounting plate frame (21) is slidably connected with a movable plate frame (23), the inner part of the movable plate frame (23) is hollow, two hydraulic cylinders (22) are embeddedly installed in the inner part of the mounting plate frame (21), the extension end of the hydraulic cylinder (22) is downwardly fixedly connected with the inner bottom side of the movable plate frame (23), one belt conveyor (24) is installed on the lower end of each movable plate frame (23), the end part of the belt conveyor (24) is flush with the inner side of the movable plate frame (23), the other end of the belt conveyor (24) is horizontally and outwardly expanded, and a plurality of rows of silica gel protrusions are equidistantly installed on the surface of the belt of the belt conveyor (24).

3. The positioning device for cutting double face complex fleece fabric according to claim 1, wherein: The cutting positioning unit (3) further comprises a mounting cross frame (31), a lead screw (32), a boom (33), a longitudinal slide (34) and a clamping block (35), the two ends of the mounting cross frame (31) are fixedly connected to the middle of the upper ends of the left and right two mounting plate frames (21), the inside of the mounting cross frame (31) is mounted with a horizontal lead screw (32), the nut of the lead screw (32) is a square structure, and a vertical boom (33) is fixedly connected to the lower side of the nut, the longitudinal slide (34) is mounted at the lower end of the right side of the boom (33), the left side of the longitudinal slide (34) is fixedly connected with two triangular clamping blocks (35) in the middle, the two clamping blocks (35) are clamped on the outside of the boom (33) and fixed with the boom (33) by welding, and a PLC controller is embedded and mounted on the front side of the mounting cross frame (31).

4. The positioning device for cutting double-sided composite fleece fabric according to claim 3, characterized in that: The cloth conveying unit (2) comprises a lead screw (36), a distance sensor (37) and an ultrasonic cutting knife (38), the inside of the longitudinal slide (34) is mounted with a longitudinal lead screw (36), the nut of the lead screw (36) is also a square structure, and an ultrasonic cutting knife (38) is mounted on the lower side, the distance sensor (37) is mounted on the upper end of the square nut, and the detection end of the distance sensor (37) horizontally faces right.

5. The positioning device for cutting double face complex flannelette according to claim 1, characterized in that: The cloth conveying unit (2) further comprises a lifting frame (25) and a fixed block (213), the opposite sides of the left and right two movable plate frames (23) are fixedly connected with two lifting frames (25) in front and back, the lifting frame (25) is composed of two dry bodies fixedly connected in an inclined manner, one end of the belt conveyor (24) close to the outside is fixedly inserted with the obliquely lower end of the lifting frame (25) through the outside inserting rod, one end of the belt conveyor (24) close to the inside is fixedly inserted with the lower extension block on the front and back sides of the movable plate frame (23) through the inserting rod, one end of the mounting rod frame (26) abuts against the front and back end faces of the movable plate frame (23), the fixed block (213) is in the shape of the letter Ω, the fixed block (213) is protected outside the end of the mounting rod frame (26), and the two ends of the fixed block (213) are fixedly connected with the movable plate frame (23) through bolts.

6. The positioning device for cutting double face complex flannelette according to claim 2, characterized in that: It also includes a mounting bracket (4) and a fixed foot base (5), the front and back ends of the mounting plate frame (21) are fixedly connected with an L-shaped mounting bracket (4), the vertical section of the mounting bracket (4) faces downward, and the fixed foot base (5) is fixedly connected to the lower end through bolts, and the fixed foot base (5) is fixedly connected with the blocking frame on the front and back sides of the passive belt conveyor (1) through bolts.

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