Automatic adjusting device and method for unwinding device of carpet making machine

Abstract

The automatic adjusting device comprises a support, a first roller and a second roller, shaft pipes are fixedly connected to the two ends of the first roller, the shaft pipes at the two ends of the first roller are assembled in adjustable bearing seats respectively, the adjustable bearing seats are assembled on the support, and electric lifters are installed on the support at the two ends of the first roller. A lifting part in the electric lifter is connected with the adjustable bearing seat; the two ends of the second roller are connected with the support through tension sensors respectively, the tension sensors are connected with the input end of the PLC, and the electric elevator is connected with the output end of the PLC. The invention is used for solving the problem that the product quality is influenced by the phenomena of cloth deviation, wrinkles caused by uneven stress at two ends and the like when the roller is unwound.

Description

Technical Field

[0001] The present invention relates to an automatic adjustment device and method for the unwinding device of a carpet making machine. Background Art

[0002] During the production process of a carpet making machine, it is usually necessary to stitch and press multiple layers of materials such as non-woven fabrics or films, and each layer of material needs to be unwound through an unwinding device. However, there are some problems in the actual operation of traditional unwinding devices. First, the fabric is prone to deviation during unwinding, which not only causes waste of the fabric but also affects the subsequent processing accuracy. Second, when the forces on both ends of the fabric are uneven, wrinkles are easily generated, which will seriously affect the appearance quality and service performance of the product. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic adjustment device and method for the unwinding device of a carpet making machine. The automatic adjustment device for the unwinding device of a carpet making machine is used to solve the problems that when the drum unwinds, the fabric deviates, and wrinkles appear due to uneven forces at both ends, affecting the product quality.

[0004] To solve the above problems, the technical solution of the present invention is as follows: The automatic adjustment device for the unwinding device of a carpet making machine includes a bracket, a first drum, and a second drum. Shaft tubes are fixedly connected to both ends of the first drum, and the shaft tubes at both ends of the first drum are respectively assembled in adjustable bearing seats, and the adjustable bearing seats are assembled on the bracket. Electric elevators are installed on the bracket at both ends of the first drum, and the lifting parts in the electric elevators are connected to the adjustable bearing seats; both ends of the second drum are respectively connected to the bracket through tension sensors, the tension sensors are connected to the input end of a PLC controller, and the electric elevators are connected to the output end of the PLC controller.

[0005] Cloth sucking devices are provided at both ends of the first drum. The cloth sucking device includes a support plate fixedly connected inside the first drum, a support shaft seat is installed on the support plate, and also includes a branch pipe and an air extraction pipe arranged inside the first drum. One end of the air extraction pipe is closed and is assembled in the support shaft seat. The other end of the air extraction pipe passes through the shaft tube and is connected to an air extraction pump through a joint and a hose. The air extraction pipe is fixedly connected to the bracket through a support flange. The lower end of the branch pipe is connected to the air extraction pipe, the upper end of the branch pipe is connected to an air extraction hood, and a plurality of air extraction holes are formed in the first drum. Each air extraction hole is evenly distributed around the axis of the first drum, and each air extraction hole passes above the air extraction hood in turn as the first drum rotates. The air extraction pump is connected to the output end of the PLC controller.

[0006] The air extraction holes are strip-shaped.

[0007] Two ring plates are fixedly connected at intervals on the inner wall of the first drum, and the two ring plates are respectively located on both sides of the air extraction hood. There is a gap of 0.2 - 1 mm between the air extraction hood and the ring plates.

[0008] The air extraction hood is made of nylon material.

[0009] A support rod is fixedly connected to the bracket above the first roller, and a plurality of air knives are sequentially arranged on the support rod. Each air knife is respectively communicated with a gas source through an exhaust pipe, and a pulse solenoid valve is installed on each exhaust pipe. Each pulse solenoid valve is connected to a PLC controller through a pulse controller.

[0010] The electric lift is a turbine and worm lift driven by a servo motor.

[0011] A method for an automatic adjustment device of a unwinding device of a carpet making machine includes the following steps: S1: Two tension sensors detect the tensions at both ends of the coil in real time. When the tensions at both ends of the coil are not equal, one end of the first roller tilts towards the side with the greater tension of the coil to make the tensions at both ends of the coil equal.

[0012] S2: Start the air extraction pump in the cloth suction device at the higher end of the first roller, so that a negative pressure is formed in the air extraction pipe and the air extraction hood in the cloth suction device. The negative pressure passes through the air extraction holes above the air extraction hood to adsorb the coil on the first roller, so as to apply a pulling force to one end of the higher end of the coil, and make the lower end of the coil slide down due to gravity, prompting the wrinkles on the coil to be flattened. S3: The controller controls each pulse solenoid valve to open and close sequentially from the higher end to the lower end of the coil. Compressed air is sprayed from each air knife to the coil in turn, so that the compressed air smoothes from the higher end to the lower end of the coil, and repeats the cycle many times to accelerate the removal of wrinkles from the coil.

[0013] The beneficial effects of the present invention are as follows: 1. By setting tension sensors and an electric lift and connecting them to a PLC controller, the present invention can monitor the tensions at both ends of the coil in real time and automatically adjust the position of the first roller, so that the tensions at both ends of the coil are kept balanced, effectively preventing the fabric from running off and generating wrinkles, and significantly improving the product quality and production efficiency.

[0014] 2. The design of the cloth suction device further enhances the wrinkle removal effect. By forming a negative pressure in the air extraction pipe and the air extraction hood through the air extraction pump, adsorbing and pulling the coil by using long strip-shaped air extraction holes, combined with the sealing effect of the ring plate and the wear resistance of the nylon air extraction hood, the stability and reliability of the adsorption are ensured. This way of adsorption and pulling can effectively flatten the wrinkles on the coil and further improve the appearance quality of the product.

[0015] 3. The introduction of the air knife device simulates the action of manual smoothing. By sequentially opening and closing the pulse solenoid valves through the PLC controller, compressed air is sprayed from the air knives to the coil, accelerating the wrinkle removal process of the coil and further improving the production efficiency and wrinkle removal effect.

[0016] 4. The worm and wheel lift driven by a servo motor is used as an electric lift. By utilizing its self-locking function, the stability after the position adjustment of the first roller is ensured, and the influence on the tension balance and the normal unwinding of the fabric due to the change of the roller position is avoided.

[0017] 5. The automatic adjustment device of the present invention has a high degree of intelligence and can automatically complete a series of operations such as tension monitoring, position adjustment, and wrinkle removal, reducing the dependence on manual labor, lowering the labor cost, and at the same time improving the automation level and overall efficiency of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings: Figure 1 is a front view structural schematic diagram of the present invention, Figure 2 is a side view structural schematic diagram of the present invention, Figure 3 is a sectional structural schematic diagram of the present invention, Figure 4 is Figure 3 a sectional structural schematic diagram at A-A in Figure 5 is a schematic diagram of the connection relationship between the electrical components of the present invention.

[0019] In the figure: tension sensor 1, bracket 2, air extraction pipe 3, support flange 4, electric lift 5, pulse solenoid valve 6, air knife 7, first roller 8, air extraction hole 9, air source 10, second roller 11, adjustable bearing seat 12, coil 13, support plate 14, support shaft seat 15, air extraction hood 16, ring plate 17, shaft tube 18, joint 19, branch pipe 20. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Such as Figures 1 to 5As shown, the automatic adjustment device of the unwinding device of the carpet making machine includes a bracket 2, a first roller 8 and a second roller 11. The position of the first roller 8 is higher than that of the second roller 11, and the first roller 8 is located below the coil material 13, while the second roller 11 is located above the coil material 13. Shaft tubes 18 are fixedly connected to both ends of the first roller 8, and the shaft tubes 18 at both ends of the first roller 8 are respectively assembled in adjustable bearing seats 12. The adjustable bearing seats 12 have adjustable center bearings, and the adjustable bearing seats 12 are assembled on the bracket 2. Electric elevators 5 are installed at the upper ends of the bracket 2 at both ends of the first roller 8, and the lifting parts in the electric elevators 5 are connected to the adjustable bearing seats 12; both ends of the second roller 11 are respectively connected to the bracket 2 through tension sensors 1. The tension sensors 1 are connected to the input end of the PLC controller, and the electric elevators 5 are connected to the output end of the PLC controller.

[0022] When the present invention is in use, the tension sensors 1 at both ends of the second roller 11 detect the tensions at both ends of the coil material 13 in real time. When the tensions at both ends of the coil material 13 are not equal, the PLC controller controls the up and down movement of the adjustable bearing seat 12, making one end of the first roller 8 tilt towards the side with greater coil material tension, so as to make the tensions at both ends of the coil material 13 equal, thereby realizing the automatic adjustment of the coil material 13.

[0023] Cloth sucking devices are provided at both ends of the first roller 8. The cloth sucking devices are used for removing wrinkles of the coil material 13. The cloth sucking devices include a support plate 14 fixedly connected inside the first roller 8. A support shaft seat 15 is installed on the support plate 14. It also includes a branch pipe 20 and an air extraction pipe 3 arranged inside the first roller 8. One end of the air extraction pipe 3 is closed and is assembled in the support shaft seat 15. The other end of the air extraction pipe 3 passes through the shaft tube 18 and is communicated with an air extraction pump (the air extraction pump is not shown in the figure) through a joint 19 and a hose. The air extraction pipe 3 is fixedly connected to the bracket 2 through a support flange 4. The lower end of the branch pipe 20 is communicated with the air extraction pipe 3, and the upper end of the branch pipe 20 is communicated with an air extraction hood 16. The air extraction hood 16 is fixedly connected to the air extraction pipe 3 through a support bar. A plurality of air extraction holes 9 are formed in the first roller 8, and the air extraction holes 9 are evenly distributed around the axis of the first roller 8. Each air extraction hole 9 passes above the air extraction hood 16 in turn as the first roller 8 rotates. The air extraction pump is connected to the output end of the PLC controller.

[0024] The working principle of the cloth sucking device is as follows: when the tensions at both ends of the coil 13 are not equal, the PLC controller controls one end of the first roller 8 to tilt towards the end with greater tension. At this time, the coil on the first roller 8 is higher on one side and lower on the other side. Then, the PLC controller controls the cloth sucking device at the other end of the first roller 8 to work, that is, the cloth sucking device located at the higher position. When this cloth sucking device works, the controller controls the air extraction pump to start, so that a negative pressure is formed between the air extraction pipe 3 and the air extraction hood 16. The negative pressure passes through the air extraction holes 9 above the air extraction hood 16 to adsorb the coil 13 on the first roller 8, so as to apply a pulling force to it. In this way, during the process of the coil 13 rolling on the first roller 8, the higher end of the coil 13 is pulled by vacuum adsorption, and the lower end of the coil 13 slides down due to gravity, so that the wrinkles on the coil 13 are flattened.

[0025] The air extraction holes 9 are strip-shaped. Compared with round holes, the strip-shaped air extraction holes 9 have a larger adsorption range for the coil 13, making the wrinkle removal effect better.

[0026] Two ring plates 17 with a thickness of 1.5 mm are fixedly connected at intervals on the inner wall of the first roller 8. The two ring plates 17 are respectively located on both sides of the air extraction hood 16, and there is a gap of 0.2 - 1 mm between the air extraction hood 16 and the ring plates 17. The two ring plates 17 form a labyrinth seal structure on both sides of the air extraction hood 16, which helps to improve the adsorption effect.

[0027] The air extraction hood 16 is made of nylon material. This material has good lubrication performance. Even when friction occurs between the ring plate 17 and the air extraction hood 16 due to processing errors, the air extraction hood 16 will not be easily worn out, ensuring the normal operation of the equipment and the stability of the wrinkle removal effect.

[0028] A support rod is fixedly connected to the bracket 2 above the first roller 8. A plurality of air knives 7 are arranged in sequence on the support rod. Each air knife 7 is respectively communicated with a compressed air source through an exhaust pipe. Pulse solenoid valves 6 are installed on each exhaust pipe. Each pulse solenoid valve 6 is connected to the PLC controller through a pulse controller. The pulse solenoid valves 6 are opened and closed in sequence at intervals of 500 ms. When wrinkles appear on the coil 13, the PLC controller controls each pulse solenoid valve 6 to open and close in sequence from the higher end to the lower end of the coil 13, so that the compressed air is sprayed from each air knife 7 to the coil 13 in sequence, simulating the action of a human hand to smooth the coil 13 from the higher end to the lower end, and repeating this cycle multiple times to further accelerate the wrinkle removal of the coil 13.

[0029] The electric lift 5 is a worm and gear lift driven by a servo motor. The worm and gear lift has a self-locking function, keeping the position of the lifted first roller 8 stable.

[0030] The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the present invention also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept of the present invention.

Claims

1. An automatic adjustment device for a carpet making machine unwinding device, characterized in that: It includes a bracket, a first roller and a second roller. A shaft tube is fixedly connected at both ends of the first roller. The shaft tubes at both ends of the first roller are respectively assembled in adjustable bearing seats. The adjustable bearing seats are assembled on the bracket. Electric lifts are installed on the brackets at both ends of the first roller. The lifting part in the electric lift is connected to the adjustable bearing seat. Both ends of the second roller are connected to the bracket through tension sensors. The tension sensor is connected to the input end of the PLC controller, and the electric lift is connected to the output end of the PLC controller.

2. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 1, characterized in that: The electric lift is a worm gear lift driven by a servo motor.

3. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 1, characterized in that: A cloth suction device is provided at both ends of the first roller, and the cloth suction device includes a support plate fixedly connected to the first roller, a support shaft seat is installed on the support plate, and also includes a branch pipe and an exhaust pipe arranged in the first roller, one end of the exhaust pipe is closed and assembled in the support shaft seat, the other end of the exhaust pipe passes through the shaft pipe and is connected with the exhaust pump through a joint and a hose, the exhaust pipe is fixedly connected to the bracket through a support flange, the lower end of the branch pipe is connected with the exhaust pipe, and the upper end of the branch pipe is connected with an exhaust hood, a plurality of exhaust holes are opened on the first roller, and the exhaust holes are evenly distributed around the axis of the first roller, and the exhaust holes pass over the exhaust hood in turn as the first roller rotates, and the exhaust pump is connected to the output end of the PLC controller.

4. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 2, characterized in that: The air extraction hole is in the shape of an elongated strip.

5. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 2, characterized in that: Two ring plates are fixedly connected to the inner wall of the first roller at intervals. The two ring plates are respectively located on both sides of the exhaust hood. There is a gap of 0.2-1 mm between the exhaust hood and the ring plates.

6. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 5, characterized in that: The thickness of the ring plate is 1~2mm.

7. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 2, characterized in that: The exhaust hood is made of nylon material.

8. The automatic adjustment device for the unwinding device of a carpet making machine according to any one of claims 3 to 7, characterized in that: A support rod is fixedly connected to the bracket above the first roller, and a plurality of wind knives are installed on the support rod in sequence. Each wind knife is connected to the air source through an exhaust pipe. A pulse solenoid valve is installed in each exhaust pipe, and each pulse solenoid valve is connected to the PLC controller through a pulse controller.

9. The automatic adjustment device for the unwinding device of a carpet making machine according to claim 6, characterized in that: The opening and closing interval of the pulse solenoid valve is 400-600ms.

10. A method for using the automatic adjustment device of the unwinding device of a carpet making machine according to claim 8, characterized in that: The steps include: S1: Two tension sensors detect the tension at both ends of the coil in real time. When the tension at both ends of the coil is unequal, one end of the first roller tilts toward the side with greater coil tension to make the tension at both ends of the coil equal. S2: starting the vacuum pump in the cloth suction device at the higher end of the first roller, so that the vacuum pipe and the vacuum hood in the cloth suction device form negative pressure, and the negative pressure absorbs the coil on the first roller through the vacuum hole above the vacuum hood, so as to apply a pulling force to the higher end of the coil, so that the lower end of the coil slides downward due to gravity, so that the wrinkles on the coil are flattened; S3: The controller controls each pulse solenoid valve to open and close from the higher end of the coil to the lower end in turn, and the compressed air is sprayed from each wind knife to the coil in turn, so that the compressed air smoothes the coil from the higher end to the lower end, repeating the cycle many times to speed up the wrinkle removal of the coil.

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