Cloth unwinding tension stabilizing device of unwinding machine

Abstract

The utility model discloses a cloth unwinding tension stabilizing device of an unwinding machine, which relates to the technical field of unwinding machines, and is characterized by comprising an unwinding machine main body, the unwinding machine main body comprises a winding drum and a bearing frame for supporting the winding drum, a support frame is arranged on the bearing frame, and the winding drum is arranged on the support frame. The supporting frame is provided with a pre-tightening assembly which is located at the front end of the winding drum in the cloth unwinding direction and used for gradually increasing the tension of cloth strips and a driving assembly for driving the pre-tightening assembly to work. A secondary control assembly is arranged in the pre-tightening assembly; when the second-stage control assembly is triggered, the driving assembly stops working, and the cloth releasing speed of the winding drum is increased. Through the arrangement of the pre-tightening assembly, the pre-tightening assembly can be synchronously started when the uncoiling machine main body is started, so that a loose cloth strip at the front end of the coiling block is supported by the pushing arc plate, and gradually increased tension is provided for the cloth strip, so that the change of traction tension borne by the cloth strip can be smoothly transited; therefore, the cloth strips cannot deform, and the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of unwinding machines, in particular to a device for stabilizing the cloth feeding tension of an unwinding machine. Background Art

[0002] An unwinding machine is a mechanical device used to re-unroll a wound cloth roll for subsequent processing. When in use, the unwinding machine generally cooperates with a winding machine. The winding machine winds the cloth strip at the rear end, and the unwinding machine unwinds the cloth strip at the front end to keep the cloth strip stable during the transmission process. After the production line stops, the drum of the unwinding machine will continue to rotate for a period of time due to inertia, resulting in the cloth strip at the front end of the drum being loose and sagging. When the production line is restarted, the cloth strip is pulled by the winding machine and quickly tightened. This sudden change in tension will cause the cloth strip to deform, thereby affecting the product quality and the factory's revenue.

[0003] In view of this, a design or technical improvement is proposed to solve the above problems.

[0004] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is the closest prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above deficiencies and provide a device for stabilizing the cloth feeding tension of an unwinding machine.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The device for stabilizing the cloth feeding tension of an unwinding machine includes an unwinding machine main body. The unwinding machine main body includes a drum and a bearing frame for supporting the drum. A support frame is arranged on the bearing frame. A pre-tightening component for gradually increasing the tension of the cloth strip and a driving component for driving the pre-tightening component to work are arranged on the support frame at the front end in the cloth feeding direction of the drum. A secondary control component is arranged inside the pre-tightening component. When the secondary control component is triggered, the driving component stops working and the cloth feeding speed of the drum increases.

[0008] Furthermore, the pre-tightening component is located above the cloth strip and includes a machine shell arranged on the support frame and having an activity cavity inside, and a pushing arc plate that is limited to slide up and down in the activity cavity. The lower part of the pushing arc plate is open. When the driving component works, the pushing arc plate extends out of the activity cavity and presses against the cloth strip at the lower end.

[0009] Further, the driving assembly includes a connecting plate disposed at the upper end of the pushing arc plate, a driving plate disposed at one end of the connecting plate away from the pushing arc plate and sealingly sliding in the moving cavity, and a blower communicated with the inside of the moving cavity through an air supply pipe; a slope inclined relative to the pipe orifice side of the air supply pipe is disposed on the driving plate, and an air storage cavity facing the pipe orifice of the air supply pipe is formed between the slope and the side wall of the moving cavity.

[0010] Further, the secondary control assembly includes a spring switch disposed on the side wall of the moving cavity, an execution electric box disposed on the machine housing and electrically connected to the spring switch, and a pressing plate disposed on the connecting plate and directly below the spring switch; when the spring switch is pressed, the execution electric box transmits a signal to the console to control the blower to close and the winding drum speed to increase.

[0011] Further, a purging assembly for discharging the airflow blown into the moving cavity by the air supply pipe from above and below the cloth strip is further disposed on the machine housing.

[0012] Further, the purging assembly includes an exhaust pipe disposed on one side of the machine housing relative to the air supply pipe and communicated with the moving cavity, and a flat nozzle communicated with one end of the exhaust pipe away from the machine housing.

[0013] Further, the diameter of the exhaust pipe is smaller than that of the air supply pipe.

[0014] Further, the exhaust pipe is divided into upper and lower sections, and the two sections are communicated through a telescopic hose. An activity port is opened at the bottom end of the side of the machine housing where the exhaust pipe is disposed, and a connecting arm with one end disposed on the upper surface of the pushing arc plate and the other end disposed on the lower section of the exhaust pipe is movably inserted into the activity port.

[0015] Compared with the prior art, the beneficial effect of this solution is that: through the setting of the pre-tightening assembly, the unwinding machine main body will synchronously start the pre-tightening assembly when starting, so as to use the pushing arc plate to support the slack cloth strip at the front end of the winding drum, and then provide a gradually increasing tension for it, so that the change of the traction tension received by this section of the cloth strip can be smoothly transitioned, so that the cloth strip will not be deformed, ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 is the front three-dimensional schematic diagram of the present invention;

[0018] Figure 2 is the side view schematic diagram of the present invention;

[0019] Figure 3 is the side view three-dimensional schematic diagram of the present utility model;

[0020] Figure 4 is the structural schematic diagram of the pre-tightening assembly in the present utility model;

[0021] Figure 5 is the internal structural schematic diagram of the casing in the present utility model;

[0022] Figure 6 is the disassembled schematic diagram of the internal structure of the casing in the present utility model.

[0023] In the figure: 1. Unwinding machine main body; 11. Reel; 12. Bearing support; 2. Support frame; 3. Casing; 31. Activity cavity; 32. Thrust arc plate; 4. Connecting plate; 41. Driving plate; 42. Air supply pipe; 43. Fan; 44. Air storage cavity; 5. Spring switch; 51. Execution electric box; 52. Thrust plate; 6. Exhaust pipe; 61. Flat nozzle; 7. Telescopic hose; 71. Activity port; 72. Connecting arm. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] As Figure 1-6 shown in the unwinding machine cloth feeding tension stabilizing device, which includes an unwinding machine main body 1. The unwinding machine main body 1 includes a reel 11 and a bearing support 12 for supporting the reel 11. A support frame 2 is provided on the bearing support 12. A pre-tightening assembly for gradually increasing the tension of the cloth strip and a driving assembly for driving the pre-tightening assembly to work are provided at the front end of the reel 11 in the cloth feeding direction; a secondary control assembly is provided inside the pre-tightening assembly; when the secondary control assembly is triggered, the driving assembly stops working and the cloth feeding speed of the reel 11 increases.

[0026] Since the processing of the cloth strip is not continuous and the whole cloth strip will not be processed at one time, when the production line stops, the reel 11 on the unwinder main body 1 will unwind an additional small section forward under the action of inertia, while the winder has stopped winding at this time, resulting in a section of the cloth strip sagging and slack at the front end of the reel 11. When the production line starts again, the traction force of the winder will pull the cloth strip from the slack state to be quickly tightened, thus deforming this section of the cloth strip and affecting the finished product quality of the cloth strip. Therefore, through the setting of the pre-tightening component, the device can be started synchronously with the unwinder main body 1. When the winder winds at the front end, the pre-tightening component will pre-provide a gradually increasing tension for the slack section of the cloth strip. The tension of the cloth strip changes incrementally, so that it will not be deformed from slack to tightened, ensuring the quality qualification rate of the product.

[0027] In one embodiment, the pre-tightening component is located above the cloth strip and includes a machine shell 3 provided on the support frame 2 and having an active cavity 31 inside, and a pushing arc plate 32 that is limited to slide up and down in the active cavity 31; the lower part of the pushing arc plate 32 is open. When the driving component works, the pushing arc plate 32 extends out of the active cavity 31 and abuts against the lower cloth strip. The driving component includes a connecting plate 4 provided at the upper end of the pushing arc plate 32, a driving plate 41 provided at one end of the connecting plate 4 away from the pushing arc plate 32 and hermetically sliding in the active cavity 31, and a blower 43 communicated with the inside of the active cavity 31 through an air supply pipe 42; a slope inclined relative to the nozzle side of the air supply pipe 42 is provided on the driving plate 41, and an air storage cavity 44 facing the nozzle of the air supply pipe 42 is formed between the slope and the side wall of the active cavity 31.

[0028] When the unwinder main body 1 is working, the reel 11 at its upper end has two speeds. The speed when working synchronously with the pre-tightening mechanism is the first speed, and the speed after the pre-tightening mechanism stops working is the second speed. The first speed is less than the second speed. The second speed is the conventional unwinding speed when cooperating with the winder in the production line. When the production line is in the initial startup state, the reel 11 unwinds at the first speed. At this time, the speed of the winder is higher than that of the unwinder main body 1, and then the slack cloth strip at the front end of the reel 11 is gradually pulled towards being straightened. During this process, the blower 43 starts synchronously with the unwinder main body 1. It supplies air into the air storage cavity 44 through the air supply pipe 42, and then uses the gas to push the driving plate 41 to slide downwards, and then the pushing arc plate 32 extends out of the active cavity 31 and abuts against the cloth strip, providing a small tension for it. While the winder is winding, the cloth strip will gradually abut against the pushing arc plate 32 and slide upwards, so that the tension received by the cloth strip gradually increases until the cloth strip is completely straightened, thus realizing the slow growth effect of the tension of the cloth strip.

[0029] In one embodiment, the secondary control component includes a spring switch 5 disposed on the side wall of the active chamber 31, an execution electric box 51 disposed on the machine housing 3 and electrically connected to the spring switch 5, and a pressing plate 52 disposed on the connecting plate 4 and directly below the spring switch 5. When the spring switch 5 is pressed, the execution electric box 51 transmits a signal to the console, causing it to control the blower 43 to turn off and the winding speed of the reel 11 to increase. When the cloth strip gradually abuts and pushes the arc plate 32 upward until it is completely straightened under the action of the winding machine, the pressing plate 52 on the connecting plate 4 will abut against the spring switch 5, thereby transmitting an electrical signal to the execution electric box 51. At this time, the execution electric box 51 transmits a signal to the production line console, causing the blower 43 to turn off, and the unwinding speed of the reel 11 to increase to the second speed, so that the conveying speed of the cloth strip changes to the normal production line operation speed.

[0030] In one embodiment, the machine housing 3 is further provided with a purging assembly for discharging the air flow blown into the active chamber 31 by the air supply pipe 42 from above and below the cloth strip. The purging assembly includes an exhaust pipe 6 disposed on one side of the machine housing 3 opposite to the air supply pipe 42 and communicating with the active chamber 31, and a flat nozzle 61 communicating with the end of the exhaust pipe 6 away from the machine housing 3. Since the blower 43 continuously supplies air into the active chamber 31 through the air supply pipe 42 during the operation of the driving assembly, in order to ensure that the pushing arc plate 32 will not abut against the cloth strip and cannot be straightened due to excessive gas pressure, the exhaust pipe 6 is provided on the machine housing 3, so that the air entering the active chamber 31 will be discharged from the exhaust pipe 6 when the pushing arc plate 32 slides upward, thereby ensuring that the cloth strip can stably tend to be straightened. At the same time, the gas discharged from the exhaust pipe 6 is purged toward the cloth strip through the flat nozzle 61 at the lower end, thereby cleaning the dust on it and ensuring the cleanliness of the hanging section of the cloth strip here.

[0031] In one embodiment, the diameter of the exhaust pipe 6 is smaller than that of the air supply pipe 42, so as to ensure that the air supply speed into the active chamber 31 is greater than the exhaust speed, so that the pushing arc plate 32 can stably extend downward from the active chamber 31. At the same time, when the cloth strip abuts against the pushing arc plate 32 and gradually rises under the action of the winding machine, the gas pressure inside it will also gradually increase. Therefore, during the process of the cloth strip changing from a relaxed state to a tightened state, the pushing arc plate 32 will gradually increase the supporting force on the cloth strip, so that the cloth strip tension changes in a gradually increasing form.

[0032] In one embodiment, the exhaust pipe 6 is divided into upper and lower sections, which are connected by a telescopic hose 7. An activity port 71 is opened at the bottom end of the side of the machine housing 3 where the exhaust pipe 6 is provided. A connecting arm 72 with one end disposed on the upper surface of the pushing arc plate 32 and the other end disposed on the lower section of the exhaust pipe 6 is movably inserted through the activity port 71. Through the setting of the telescopic hose 7, the pushing arc plate 32 can drive the exhaust pipe 6 to extend when moving up and down, thereby driving the flat nozzle 61 to purge the cloth strip up and down, so as to comprehensively clean the dust within the range of its upper and lower ends.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model.

Claims

1. A stabilizing device for unwinding a cloth tension, comprising an unwinding machine body (1), wherein the unwinding machine body (1) comprises a reel (11) and a bearing frame (12) for supporting the reel (11), characterized in that: The bearing frame (12) is provided with a support frame (2), and the support frame (2) is provided with a pre-tightening component located at the front end of the reel (11) in the cloth-releasing direction and used for gradually increasing the tension of the cloth strip, and a driving component for driving the pre-tightening component to work; A secondary control component is arranged inside the pre-tensioning component; When the secondary control component is triggered, the driving component stops working and the cloth placing speed of the reel (11) is increased.

2. The unwinding machine cloth tension stabilizing device according to claim 1, characterized in that: The pre-tightening assembly is located above the cloth strip, and comprises a housing (3) arranged on a support frame (2) and provided with an active cavity (31) therein, and a push arc plate (32) sliding up and down within the active cavity (31); The lower part of the push arc plate (32) is open, and when the driving assembly is working, the push arc plate (32) extends out from the active cavity (31) and abuts against the cloth strip at the lower end.

3. The unwinding machine cloth tension stabilizing device according to claim 2, characterized in that: The driving assembly comprises a connecting plate (4) arranged at the upper end of the arc-pushing plate (32), a driving plate (41) arranged at one end of the connecting plate (4) away from the arc-pushing plate (32) and sealingly sliding in the active cavity (31), and a fan (43) connected to the interior of the active cavity (31) through an air supply pipe (42); The driving plate (41) is provided with an inclined surface inclined relative to the pipe opening of the air supply pipe (42), and an air containing cavity (44) facing the pipe opening of the air supply pipe (42) is formed between the inclined surface and the side wall of the active cavity (31).

4. The unwinding machine cloth tension stabilizing device according to claim 3, characterized in that: The secondary control assembly comprises a spring switch (5) arranged on the side wall of the active chamber (31), an execution electric box (51) arranged on the housing (3) and electrically connected to the spring switch (5), and a pressure plate (52) arranged on the connecting plate (4) and located directly below the spring switch (5); When the spring switch (5) is pressed, the execution box (51) transmits a signal to the control console, causing it to control the fan (43) to be turned off and the speed of the reel (11) to be increased.

5. The unwinding machine cloth tension stabilizing device according to claim 3 or 4, characterized in that: The housing (3) is also provided with a purge assembly for discharging the airflow blown into the active cavity (31) by the air supply pipe (42) from above and below the cloth strip.

6. The unwinding machine tension stabilizing device according to claim 5, characterized in that: The purge assembly comprises an exhaust pipe (6) arranged on a side of the casing (3) opposite to the air supply pipe (42) and connected to the active chamber (31), and a flat air nozzle (61) connected to an end of the exhaust pipe (6) away from the casing (3).

7. The unwinding machine tension stabilizing device according to claim 6, characterized in that: The diameter of the exhaust pipe (6) is smaller than that of the air supply pipe (42).

8. The unwinding machine tension stabilizing device according to claim 7, characterized in that: The exhaust pipe (6) is divided into two sections, an upper section and an lower section, which are connected via a telescopic hose (7). A movable opening (71) is provided at the bottom end of one side of the exhaust pipe (6) provided on the housing (3). A connecting arm (72) having one end provided on the upper surface of the push arc plate (32) and the other end provided on the lower section of the exhaust pipe (6) is movably connected in the movable opening (71).

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