A pay-off mechanism with safety device

Abstract

The utility model discloses a kind of material unwinding mechanism with safety device, including rack, material clamping unwinding mechanism and unwinding deviation rectifying mechanism are equipped on rack, material clamping unwinding mechanism is used for the limiting and unwinding of external material roll;Unwinding deviation rectifying mechanism includes deviation rectifying inductor, unwinding deviation rectifying mechanism further includes the deviation rectifying roller and tension float roller of movable setting relative to rack, deviation rectifying inductor is used to sense whether deviation occurs in the running process of material belt, and deviation rectifying of material belt that occurs is carried out by cooperating deviation rectifying roller and tension float roller use, to improve unwinding precision as a whole, reduce material waste and production interruption, ensure the reliability and efficiency of unwinding process.

Description

Technical Field

[0001] This utility model relates to the field of ammunition manufacturing and automated equipment technology, and in particular to a material unwinding mechanism with a safety device. Background Technology

[0002] In the structure of artillery shells and ammunition, components formed by stamping nitrocellulose paper (such as covers and gaskets) are often used for fire isolation and sealing between the warhead and the propulsion section, or as carriers of propellant. Their dimensional accuracy, structural density, and molding quality are directly related to the storage safety, operational reliability, and explosive power of the ammunition.

[0003] Currently, the production of this component relies heavily on traditional single-machine equipment to complete in sections, which has some drawbacks: First, manual unwinding and transfer are inefficient, and the soft nitrocellulose paper is prone to deviation during operation, resulting in the die-cut cover sheet having out-of-tolerance dimensions and edge burrs. This may cause gaps or poor fit during shell assembly, creating safety hazards. Now, an unwinding mechanism with a safety device is provided. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a material unwinding mechanism with a safety device.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a material unwinding mechanism with a safety device, including a frame, on which a clamping unwinding mechanism and an unwinding correction mechanism are provided. The clamping unwinding mechanism is used for limiting and unwinding external material rolls. The unwinding correction mechanism includes a correction sensor, and also includes a correction roller and a tension floating roller that are movably arranged relative to the frame. The correction sensor is used to sense whether the material strip deviates during operation, and works with the correction roller and tension floating roller to correct the deviated material strip.

[0007] Preferably, the unwinding and correction mechanism further includes a second bracket slidably mounted on the frame. The frame is provided with a first driving component for driving the second bracket to slide relative to the frame. The correction roller and the tension floating roller are both mounted on the frame and rotate relative to the frame, thereby enabling the correction roller and the tension floating roller to slide laterally as a whole for active correction. The rotational mounting of the correction roller and the tension floating roller relative to the frame supports and guides the smooth operation of the material belt, ensuring that the tension of the material belt remains stable and unobstructed during the correction process.

[0008] Preferably, the second support is also equipped with a dust-collecting air knife, which is connected to an external explosion-proof vacuum cleaner to remove dust generated when the material belt passes through the rollers. This achieves online cleaning of the material belt, prevents dust pollution or explosion, and improves operational safety in flammable and explosive environments with the help of the explosion-proof design.

[0009] Preferably, the correction roller is an air-bearing roller, which includes a roller body and an air-bearing bushing located at the upper end of the roller body along its length and mounted on a second support. The roller body and the air-bearing bushing are used to reduce the friction of the external material belt during conveying, thereby significantly reducing the frictional resistance between the material belt and the roller surface during conveying and correction, thus reducing material wear and power loss.

[0010] Preferably, the second support is provided with a rod, and the tension floating roller includes a roller and an air bearing rotatably disposed at the end of the roller along its length. The air bearing is slidably disposed relative to the rod, so that the tension floating roller can float sensitively following the changes in the tension of the material belt, thereby more accurately maintaining a constant tension of the material belt and assisting in the correction action.

[0011] Preferably, the clamping and unwinding mechanism includes a first support mounted on the frame, a first side frame and a second side frame mounted on the first support, and a fourth driving component mounted on the first support for driving the first side frame and the second side frame to move closer or further apart. Clamping components are rotatably mounted on both the first side frame and the second side frame. The clamping components are conical in shape to support and limit external material rolls. The conical clamping components can adaptively clamp and center external material rolls of different widths and inner diameters, which can quickly and stably install and support material rolls, improving the equipment's versatility and roll changing efficiency.

[0012] Preferably, the first side frame and / or the second side frame are provided with a fifth drive unit with explosion-proof function. The fifth drive unit is used to drive the external material roll to unwind or rewind via the clamping assembly. By providing the fifth drive unit with explosion-proof function, the power source for unwinding or rewinding is safely provided, so as to reliably drive the clamping assembly and the external material roll to rotate even in a potentially explosive environment, thus ensuring production safety.

[0013] Preferably, a material sensor is provided on the first support, located between the first side frame and the second side frame. The material sensor is used to detect the material status of the roll, which can effectively realize the automatic detection of the roll status and provide signals for unwinding control, material depletion warning or automatic material receiving, thereby improving the level of automation.

[0014] Preferably, the frame is equipped with a position sensor, which is located on the side of the clamping and unwinding mechanism away from the unwinding and correction mechanism. The position sensor is used to sense the position of the trolley carrying the external material roll. It can automatically detect whether the trolley carrying the external material roll has reached the designated feeding position, realize the automatic triggering and positioning of the feeding process, reduce manual intervention and improve feeding accuracy and efficiency.

[0015] Preferably, two guide bars are provided on the end of the frame near the position sensor. The two guide bars are used to guide the external trolley. Rubber-coated bearings are also rotatably installed on the guide bars. The two guide bars on the frame and the rubber-coated bearings are used to physically guide and position the trolley when it enters, thereby guiding the trolley to accurately align with the bottom of the clamping and unwinding mechanism. At the same time, the rubber-coated bearings reduce friction and collision during the guiding process through rolling contact, protecting the trolley and the equipment.

[0016] The beneficial effects of this utility model are as follows: the unwinding and correction mechanism uses a correction sensor to sense in real time whether the material strip deviates during operation, realizing automatic detection of deviation and triggering of correction response; the correction roller, through its movable setting relative to the frame, dynamically adjusts the position of the material strip, achieving precise correction of deviation and ensuring stable operation of the material strip with center alignment; the tension floating roller maintains stable tension of the material strip, preventing the material strip from becoming too loose or too tight and assisting in the correction process, thereby improving the overall unwinding accuracy, reducing material waste and production interruption, and ensuring the reliability and efficiency of the unwinding process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

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

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

[0021] Figure 3 This is one of the structural schematic diagrams of the clamping and unwinding mechanism of this utility model;

[0022] Figure 4 This is the second structural schematic diagram of the clamping and unwinding mechanism of this utility model;

[0023] Figure 5 This is a partial structural schematic diagram of the unwinding and correction mechanism of this utility model;

[0024] Figure 6 This is a schematic diagram of the tension floating roller of this utility model;

[0025] Figure 7 This is a schematic diagram showing the location of the explosion-proof vacuum cleaner of this utility model.

[0026] The reference numerals in the figures include:

[0027] 1. Frame; 2. Material clamping and unwinding mechanism; 3. Unwinding and correction mechanism; 4. Explosion-proof dust collector; 11. Guide bar; 111. Rubber-coated bearing; 12. Trolley; 13. Position sensor; 20. First support; 201. First side frame; 202. Second side frame; 21. Second drive component; 22. Material clamping assembly; 23. Third drive component; 24. Material sensor; 25. Zero-float follow-up assembly; 31. Correction sensor; 32. Correction roller; 33. Second support; 331. Rod; 34. First drive component; 35. Dust-collecting air knife; 36. Tension floating roller; 361. Winding roller; 362. Air bearing Detailed Implementation

[0028] Reference Figures 1 to 7 A material unwinding mechanism with a safety device includes a frame 1. The frame 1 is equipped with a clamping and unwinding mechanism 2 and an unwinding and correction mechanism 3. The clamping and unwinding mechanism 2 is used for limiting and unwinding external material rolls. The unwinding and correction mechanism 3 includes a correction sensor 31. The unwinding and correction mechanism 3 also includes a correction roller 32 and a tension floating roller 36 that are movably arranged relative to the frame 1. The correction sensor 31 is used to sense whether the material strip deviates during operation and works with the correction roller 32 and the tension floating roller 36 to correct the deviated material strip.

[0029] With the above structural setup, during use, the unwinding and correction mechanism 3 uses the correction sensor 31 to sense in real time whether the material strip has deviated during operation, realizing automatic detection of deviation and triggering of correction response; the correction roller 32, through its movable setting relative to the frame 1, dynamically adjusts the position of the material strip, realizing precise correction of deviation and ensuring stable operation of the material strip centering; the tension floating roller 36 maintains stable tension of the material strip, preventing the material strip from becoming too loose or too tight and assisting in the correction process, thereby improving the overall unwinding accuracy, reducing material waste and production interruption, and ensuring the reliability and efficiency of the unwinding process.

[0030] Specifically, the unwinding and correction mechanism 3 also includes a second support 33 slidably mounted on the frame 1. The frame 1 is provided with a first driving member 34 for driving the second support 33 to slide relative to the frame 1. The correction roller 32 and the tension floating roller 36 are both mounted on the second support 33 and rotate relative to the frame 1, thereby realizing the overall lateral sliding of the correction roller 32 and the tension floating roller 36 for active correction. The rotational mounting of the correction roller 32 and the tension floating roller 36 relative to the frame 1 plays a role in supporting and guiding the smooth operation of the material belt, thereby ensuring that the tension of the material belt remains stable and unobstructed during the correction process.

[0031] Specifically, the second bracket 33 is also equipped with a dust suction air knife 35, which is connected to an external explosion-proof vacuum cleaner 4 to remove dust generated when the material belt passes through the roller. This realizes online cleaning of the material belt, prevents dust pollution or explosion, and improves the operational safety in flammable and explosive environments with the help of explosion-proof design.

[0032] Specifically, the correction roller 32 is an air-bearing roller, which includes a roller body and an air-bearing bushing located at the upper end of the roller body along its length and mounted on the second support 33. The roller body and the air-bearing bushing are used to reduce the friction of the external material belt during conveying, thereby significantly reducing the frictional resistance between the material belt and the roller surface during conveying and correction, thus reducing material wear and power loss.

[0033] Specifically, the second support 33 is provided with a rod 331, and the tension floating roller 36 includes a roller 461 and an air bearing 462 rotatably disposed at the end of the roller 461 in the length direction. The air bearing 462 is slidably disposed relative to the rod 331, so that the tension floating roller 36 can float sensitively following the changes in the tension of the material belt, thereby maintaining a constant tension of the material belt more accurately and assisting in the correction action.

[0034] Specifically, the clamping and unwinding mechanism 2 includes a first support 20 mounted on the frame 1. The first support 20 is provided with a first side frame 201 and a second side frame 202. The first support 20 is provided with a fourth driving member 21 for driving the first side frame 201 and the second side frame 202 to move closer or further apart. Clamping components 22 are rotatably mounted on both the first side frame 201 and the second side frame 202. The clamping components 22 are conical in shape to support and limit external material rolls. The conical clamping components 22 can adaptively clamp and center external material rolls of different widths and inner diameters, which can quickly and stably install and support material rolls, improving the equipment's versatility and roll changing efficiency.

[0035] Specifically, the first side frame 201 and / or the second side frame 202 are equipped with a fifth drive unit 23 with explosion-proof function. The fifth drive unit 23 is used to drive the external material roll to unwind or rewind via the clamping assembly 22. By setting the fifth drive unit 23 with explosion-proof function, the power source for unwinding or rewinding is safely provided, so as to reliably drive the clamping assembly 22 and the external material roll to rotate even in a potentially explosive environment, thus ensuring production safety.

[0036] Specifically, a material sensor 24 is provided on the first support 20. The material sensor 24 is located between the first side frame 201 and the second side frame 202. The material sensor 24 is used to detect the material status of the material roll. It can effectively realize the automatic detection of the material roll status and provide signals for unwinding control, material depletion warning or automatic material receiving, thereby improving the level of automation.

[0037] Specifically, a position sensor 13 is provided on the frame 1. The position sensor 13 is located on the side of the clamping and unwinding mechanism 2 away from the unwinding and correction mechanism 3. It is used to sense the position of the trolley 12 carrying the external material roll. It can automatically detect whether the trolley 12 carrying the external material roll has reached the designated feeding position, realize the automatic triggering and positioning of the feeding process, reduce manual intervention and improve feeding accuracy and efficiency.

[0038] Specifically, two guide bars 11 are provided on the frame 1 near the position sensor 13. The two guide bars 11 are used to guide the external trolley 12. Rubber-coated bearings 111 are also rotatably provided on the guide bars 11. The two guide bars 11 and the rubber-coated bearings 111 on the frame 1 serve to physically guide and position the trolley 12 when it enters, thereby guiding the trolley 12 to accurately align with the bottom of the clamping and unwinding mechanism 2. At the same time, the rubber-coated bearings 111 reduce friction and collision during the guiding process through rolling contact, protecting the trolley 12 and the equipment.

[0039] Specifically, two guide bars 11 are mounted on the frame 1 via external bolts, and the distance between the two guide bars 11 can be adjusted as needed.

[0040] The above description provides one or more embodiments in conjunction with specific content, but it is not intended that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A material unwinding mechanism with a safety device, comprising a frame (1), wherein the frame (1) is provided with a clamping unwinding mechanism (2) and an unwinding correction mechanism (3), the clamping unwinding mechanism (2) being used for limiting and unwinding external material rolls; characterized in that: The unwinding correction mechanism (3) includes a correction sensor (31). The unwinding correction mechanism (3) also includes a correction roller (32) and a tension floating roller (36) that are movably arranged relative to the frame (1). The correction sensor (31) is used to sense whether the material strip deviates during operation, and works with the correction roller (32) and the tension floating roller (36) to correct the deviated material strip.

2. The unwinding mechanism with a safety device according to claim 1, characterized in that: The unwinding and correction mechanism (3) also includes a second support (33) slidably mounted on the frame (1). The frame (1) is provided with a first driving member (34) for driving the second support (33) to slide relative to the frame (1). The correction roller (32) and the tension floating roller (36) are both mounted on the second support (33) and rotate relative to the frame (1).

3. The unwinding mechanism with a safety device according to claim 2, characterized in that: The second support (33) is also equipped with a dust-collecting air knife (35), which is connected to an external explosion-proof dust collector (4) for removing dust generated when the material belt passes through the roller.

4. The unwinding mechanism with a safety device according to claim 2, characterized in that: The correction roller (32) is an air-bearing roller, which includes a roller body and an air-bearing bushing located at the end of the length direction of the roller body and provided on the second support (33).

5. The unwinding mechanism with a safety device according to claim 2, characterized in that: The second support (33) is provided with a rod (331), and the tension floating roller (36) includes a roller (461) and an air bearing (462) rotatably disposed at the end of the roller (461) in the length direction. The air bearing (462) is slidably disposed relative to the rod (331).

6. The unwinding mechanism with a safety device according to claim 1, characterized in that: The clamping and unwinding mechanism (2) includes a first support (20) mounted on the frame (1), a first side frame (201) and a second side frame (202) mounted on the first support (20), a fourth driving member (21) mounted on the first support (20) for driving the first side frame (201) and the second side frame (202) to move closer or further away from each other, and a clamping assembly (22) rotatably mounted on both the first side frame (201) and the second side frame (202), the clamping assembly (22) being conical in shape for supporting and limiting the external material roll.

7. The unwinding mechanism with a safety device according to claim 6, characterized in that: The first side frame (201) and / or the second side frame (202) are provided with a fifth drive unit (23) with explosion-proof function. The fifth drive unit (23) is used to drive the external material roll to unwind or rewind via the clamping assembly (22).

8. The unwinding mechanism with a safety device according to claim 6, characterized in that: The first support (20) is equipped with a material sensor (24), which is located between the first side frame (201) and the second side frame (202). The material sensor (24) is used to detect the material condition of the material roll.

9. The unwinding mechanism with a safety device according to claim 6, characterized in that: A position sensor (13) is provided on the frame (1). The position sensor (13) is located on the side of the clamping and unwinding mechanism (2) away from the unwinding and correction mechanism (3) to sense the position of the trolley (12) that carries the material roll in the outside.

10. The unwinding mechanism with a safety device according to claim 9, characterized in that: Two guide bars (11) are provided on one end of the frame (1) near the position sensor (13). The two guide bars (11) are used to guide the external trolley (12). Rubber-coated bearings (111) are also rotatably provided on the guide bars (11).

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