A paper tube locking device for a winding machine

Abstract

The present invention discloses a paper tube locking device for a winding machine, which includes an air circuit fixing part, a main shaft, a paper tube, a first shaft sleeve, a second shaft sleeve, a first connecting column, a third shaft sleeve, an end cover of the shaft, a second connecting column, a hole retaining ring, a first O-ring, an internal spring, a first PPR plastic piston ring, a shaft retaining ring, a second O-ring, an external spring, a first screw, a second screw, a positioning pin, a third O-ring, a screw hole, a third screw and a second PPR plastic piston ring. The air circuit fixing part is sleeved on the inner wall of one side of the main shaft. In this invention, the tension of the carbon fiber filaments can be made small so that it cannot overcome this frictional force to loosen the paper tube. In addition, during the winding process, the paper tube is always in a locked state, and the tensioning component plays a major role. The paper tube is locked by the internal spring, and compressed air does not need to intervene, saving a large amount of energy. The on-off of the compressed air can be controlled to realize the switching between the locked and unlocked states of the paper tube, which is quick, convenient and has very low energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of paper tube locking of winding machines, and particularly relates to a paper tube locking device for a winding machine. Background Art

[0002] There are many forms of paper tube locking devices for winding machines. Generally speaking, they all tighten the inner hole of the paper tube. If the outer surface of the paper tube is locked, in terms of reliability, it is not advisable to lock only one end. The rigidity and hardness of the paper tube itself are not as good as those of metal, and locking only one end cannot ensure the fixation of the paper tube. And the method of locking both ends has a complex structure, and the process of taking and placing the paper tube is inconvenient or even infeasible. Therefore, the method of tightening the inner hole of the paper tube is considered. There is a small gap between the outer circular surface of the winding shaft and the inner hole of the paper tube. After the paper tube is sleeved on the winding shaft, generally, a mechanical structure that pushes the inner hole of the winding shaft is used to make the outer surface parts protrude and support the inner hole of the paper tube to achieve the purpose of tightening.

[0003] However, in the actual use process of the existing paper tube locking device for winding machines, the workload required is relatively large and the locking effect is average. And every time the paper tube is replaced, a great deal of effort is needed to pull out the connecting rod, and at the same time, a great deal of effort is also needed to push the connecting rod forward. When a large number of rewinding operations are carried out, a great deal of manpower is consumed. During the process of pushing the connecting rod in, workers often use the methods of slapping and vigorously knocking. The entire winding shaft receives a relatively large instantaneous impact, resulting in the components being prone to vibration, increasing the structural instability. Moreover, after the rubber strip is strongly squeezed multiple times, its elasticity becomes poor, and the surface may be damaged, resulting in the situation that the paper tube cannot be locked, leading to the inability to produce. Summary of the Invention

[0004] The problem solved by the present invention is to provide a paper tube locking device for a winding machine. During the actual production process, the tension of the carbon fiber filaments is small and cannot overcome this frictional force to loosen the paper tube. In addition, during the winding process, the paper tube is always in a locked state, and the tensioning component plays a major role. The paper tube is locked by the internal spring, and compressed air does not need to intervene, saving a large amount of energy. The on-off of the compressed air can be controlled to realize the switching between the locked and unlocked states of the paper tube, which is fast, convenient and has very low energy consumption.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A paper tube locking device for a winding machine, comprising an air circuit fixing part, a main shaft, a paper tube, a first shaft sleeve, a second shaft sleeve, a first connecting column, a third shaft sleeve, an end cover of the shaft, a second connecting column, a hole retaining ring, a first O-ring, an internal spring, a first PPR plastic piston ring, a shaft retaining ring, a second O-ring, an external spring, a first screw, a second screw, a positioning pin, a third O-ring, a screw hole, a third screw and a second PPR plastic piston ring. An air circuit fixing part is sleeved on the inner wall of one side of the main shaft. A first O-ring is fixedly installed on the inner wall between the air circuit fixing part and the main shaft. A second connecting column is sleeved on the inner wall of the middle part of the air circuit fixing part. A hole retaining ring is sleeved on the outer wall of the second connecting column on one side of the air circuit fixing part. A first connecting column is installed on the inner wall of one side of the main shaft. An internal spring is hung and connected on the outer wall between the first connecting column and the second connecting column. A third shaft sleeve is sleeved on the outer wall of one end of the main shaft. A second screw penetrates and is connected to the inner wall of one end of the third shaft sleeve, and one end of the second screw is threadedly connected to the inside of the first connecting column. A positioning pin is inserted and fixed on the outer wall of one side of the third shaft sleeve, and the other end of the positioning pin is inserted into the inner wall of the main shaft. First PPR plastic piston rings are symmetrically sleeved on the inner wall between the third shaft sleeve and the main shaft. A first shaft sleeve is sleeved on the outer wall of the main shaft on one side of the third shaft sleeve. Second PPR plastic piston rings are symmetrically sleeved on the inner wall between the first shaft sleeve and the main shaft. A second shaft sleeve is sleeved on the outer wall between the first shaft sleeve and the third shaft sleeve. First screws are symmetrically sleeved on the inner wall of one side of the second shaft sleeve, and the bottom ends of the first screws are threadedly connected to the inner walls of the first shaft sleeve and the third shaft sleeve. A shaft retaining ring is sleeved on the inner wall of the main shaft on one side of the first shaft sleeve. A second O-ring is sleeved on the inner wall of the main shaft on one side of the third shaft sleeve. External springs are installed on the outer walls at both ends of the second shaft sleeve. An end cover of the shaft is installed on the outer wall of one end of the main shaft. A third O-ring is sleeved on the outer wall between the end cover of the shaft and the main shaft. Screw holes are distributed on the inner walls of the end cover of the shaft and one end of the main shaft. A third screw is threadedly connected to the inner wall of one side of the screw hole. A paper tube is sleeved on the outer wall of one side of the second shaft sleeve.

[0007] As a further solution of the present invention: A connecting rod is fixedly connected to the outer wall of one end of the second connecting column.

[0008] As a further solution of the present invention: The number of the third screws is four.

[0009] As a further solution of the present invention: The inner wall of one side of the external spring is sleeved on the outer walls of the first shaft sleeve and the third shaft sleeve.

[0010] The beneficial effects of the present invention are as follows: During the actual production process, the wire tension of carbon fiber is small and cannot overcome this frictional force to loosen the paper tube. Additionally, during the winding process, the paper tube is always in a locked state, and the tensioning component plays a major role. The paper tube is locked by the internal spring, and compressed air does not need to intervene, saving a large amount of energy. The on-off of the compressed air can be controlled to achieve the switching between the locked and unlocked states of the paper tube, which is quick, convenient, and has very low energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the overall internal structure diagram of the present invention;

[0012] Figure 2 is the overall external structure diagram of the present invention;

[0013] Figure 3 is the side view cutaway structure diagram of the present invention;

[0014] Figure 4 is the partial tensioning structure diagram of the present invention;

[0015] Figure 5 is the partial non-tensioning structure diagram of the present invention;

[0016] Legend Explanation: 1. Pneumatic circuit fixing part; 2. Main shaft; 3. Paper tube; 4. First shaft sleeve; 5. Second shaft sleeve; 6. First connecting column; 7. Third shaft sleeve; 8. Shaft end cover; 9. Second connecting column; 10. Hole retaining ring; 11. Connecting rod; 12. First O-ring; 13. Internal spring; 14. First PPR plastic piston ring; 15. Shaft retaining ring; 16. Second O-ring; 17. External spring; 18. First screw; 19. Second screw; 20. Positioning pin; 21. Third O-ring; 22. Threaded hole; 23. Third screw; 24. Second PPR plastic piston ring. DETAILED DESCRIPTION OF THE INVENTION

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 making creative efforts fall within the protection scope of the present invention.

[0018] Specific embodiments are given below.

[0019] See Figures 1-5, A paper tube locking device for a winding machine, comprising an air circuit fixing member 1, a main shaft 2, a paper tube 3, a first shaft sleeve 4, a second shaft sleeve 5, a first connecting column 6, a third shaft sleeve 7, a shaft end cover 8, a second connecting column 9, a hole retaining ring 10, a first O-ring 12, an internal spring 13, a first PPR plastic piston ring 14, a shaft retaining ring 15, a second O-ring 16, an external spring 17, a first screw 18, a second screw 19, a positioning pin 20, a third O-ring 21, a threaded hole 22, a third screw 23 and a second PPR plastic piston ring 24. An air circuit fixing member 1 is sleeved on the inner wall of one side of the main shaft 2. A first O-ring 12 is fixedly installed on the inner wall between the air circuit fixing member 1 and the main shaft 2. A second connecting column 9 is sleeved on the inner wall of the middle of the air circuit fixing member 1. A hole retaining ring 10 is sleeved on the outer wall of the second connecting column 9 on one side of the air circuit fixing member 1. A first connecting column 6 is installed on the inner wall of one side of the main shaft 2. An internal spring 13 is hung and connected on the outer wall between the first connecting column 6 and the second connecting column 9. A third shaft sleeve 7 is sleeved on the outer wall of one end of the main shaft 2. A second screw 19 penetrates and connects the inner wall of one end of the third shaft sleeve 7, and one end of the second screw 19 is threadedly connected to the inside of the first connecting column 6. A positioning pin 20 is inserted and fixed on the outer wall of one side of the third shaft sleeve 7, and the other end of the positioning pin 20 is inserted into the inner wall of the main shaft 2. First PPR plastic piston rings 14 are symmetrically sleeved on the inner wall between the third shaft sleeve 7 and the main shaft 2. A first shaft sleeve 4 is sleeved on the outer wall of the main shaft 2 on one side of the third shaft sleeve 7. Second PPR plastic piston rings 24 are symmetrically sleeved on the inner wall between the first shaft sleeve 4 and the main shaft 2. A second shaft sleeve 5 is sleeved on the outer wall between the first shaft sleeve 4 and the third shaft sleeve 7. First screws 18 are symmetrically sleeved on the inner wall of one side of the second shaft sleeve 5, and the bottom ends of the first screws 18 are threadedly connected to the inner walls of the first shaft sleeve 4 and the third shaft sleeve 7. A shaft retaining ring 15 is sleeved on the inner wall of the main shaft 2 on one side of the first shaft sleeve 4. A second O-ring 16 is sleeved on the inner wall of the main shaft 2 on one side of the third shaft sleeve 7. External springs 17 are installed on the outer walls at both ends of the second shaft sleeve 5. A shaft end cover 8 is installed on the outer wall of one end of the main shaft 2. A third O-ring 21 is sleeved on the outer wall between the shaft end cover 8 and the main shaft 2. Threaded holes 22 are distributed on the inner walls of one end of the shaft end cover 8 and the main shaft 2. A third screw 23 is threadedly connected to the inner wall of one side of the threaded hole 22. A paper tube 3 is sleeved on the outer wall of one side of the second shaft sleeve 5; A connecting rod 11 is fixedly connected to the outer wall of one end of the second connecting column 9, which facilitates fixing the tensioning structure to the paper winding machine and improves the installation efficiency; The number of the third screws 23 is four, increasing the number of the third screws 23 to enhance the connection effect between the shaft end cover 8 and the main shaft 2; The outer wall of one side of the external spring 17 is sleeved on the outer walls of the first shaft sleeve 4 and the third shaft sleeve 7, which facilitates the tensioning operation of the paper tube 3 through the offset of the external spring 17.

[0020] Working principle of the present invention: The inside of the first connecting column 6 is hollow. By rotating the second screw 19, the first connecting column 6 is displaced, thereby changing the deformation amount of the internal spring 13. The second connecting column 9 on the connecting rod 11 is fixed with the assistance of the gas path fixing member 1. At this time, under the pulling force of the internal spring 13, the first shaft sleeve 4 and the third shaft sleeve 7 approach both sides of the second shaft sleeve 5. At this time, the cross-sectional area of the V-shaped grooves on both sides becomes smaller, thereby stretching the external spring 17, and thus increasing the outer diameter of the entire circumference to tighten the inner hole of the paper tube 3; the larger the outer circumference diameter of the external spring 17, the stronger the tightening degree of the inner hole of the paper tube 3. The stretching of the external spring 17 is mainly adjusted indirectly through the second screw 19; since the second screw 19 is closely attached to the step surface of the third shaft sleeve 7, under the action of the tightening assembly, the third shaft sleeve 7 has a tendency to displace to the left; when the second screw 19 is screwed into the first connecting column 6 to a relatively shallow depth, the deformation amount of the internal spring 13 is very small, and the generated pulling force is too small to drive the third shaft sleeve 7 to displace to the left. The V-shaped grooves do not change and cannot stretch the external spring 17. At this time, the outer circumference diameter of the external spring 17 is less than or equal to the inner hole diameter of the paper tube 3, and the paper tube 3 cannot be locked; when the second screw 19 is screwed into the first connecting column 6 to a sufficient depth, the deformation amount of the internal spring 13 becomes larger, and the generated pulling force causes the third shaft sleeve 7 to displace to the left. The cross-sectional area of the V-shaped grooves becomes smaller, stretching the external spring 17 until the circumferential diameter is slightly larger than the inner hole diameter of the paper tube 3. At this time, the external spring generates a tightening effect on the inner hole of the paper tube 3; if it is necessary to enhance the tightening degree, continue to tighten the second screw 19 until the end face of the second shaft sleeve 5 fits, and the cross-sectional area of the V-shaped grooves reaches the minimum. At this time, the tightening degree reaches the strongest and the locking effect is the best; continuing to tighten the second screw 19 can increase the pulling force of the internal spring 13, but it cannot enhance the locking effect and may even cause the paper tube 3 to be unable to be taken and placed.

[0021] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A paper tube locking device for a winding machine, characterized in that, It includes an air path fixing member (1), a main shaft (2), a paper tube (3), a first bushing (4), a second bushing (5), a first connecting column (6), a third bushing (7), an end cover (8), a second connecting column (9), a hole retaining ring (10), a first O-ring (12), an internal spring (13), a first PPR plastic piston ring (14), a shaft retaining ring (15), a second O-ring (16), an external spring (17), a first screw (18), a second screw (19), a positioning pin (20), a third O-ring (21), a threaded hole (22), a third screw (23) and a second PPR plastic piston ring (24). An air path fixing member (1) is sleeved on the inner wall of one side of the main shaft (2). A first O-ring (12) is fixedly installed on the inner wall between the air path fixing member (1) and the main shaft (2). A second connecting column (9) is sleeved on the inner wall of the middle part of the air path fixing member (1). A hole retaining ring (10) is sleeved on the outer wall of the second connecting column (9) on one side of the air path fixing member (1). A first connecting column (6) is installed on the inner wall of one side of the main shaft (2). An internal spring (13) is hung and connected on the outer wall between the first connecting column (6) and the second connecting column (9). A third bushing (7) is sleeved on the outer wall of one end of the main shaft (2). A second screw (19) penetrates and connects the inner wall of one end of the third bushing (7), and one end of the second screw (19) is threadedly connected to the inside of the first connecting column (6). A positioning pin (20) is inserted and fixed on the outer wall of one side of the third bushing (7), and the other end of the positioning pin (20) is inserted into the inner wall of the main shaft (2). First PPR plastic piston rings (14) are symmetrically sleeved on the inner wall between the third bushing (7) and the main shaft (2). A first bushing (4) is sleeved on the outer wall of the main shaft (2) on one side of the third bushing (7). Second PPR plastic piston rings (24) are symmetrically sleeved on the inner wall between the first bushing (4) and the main shaft (2). A second bushing (5) is sleeved on the outer wall between the first bushing (4) and the third bushing (7). First screws (18) are symmetrically sleeved on the inner wall of one side of the second bushing (5), and the bottom ends of the first screws (18) are threadedly connected to the inner walls of the first bushing (4) and the third bushing (7). A shaft retaining ring (15) is sleeved on the inner wall of the main shaft (2) on one side of the first bushing (4). A second O-ring (16) is sleeved on the inner wall of the main shaft (2) on one side of the third bushing (7). External springs (17) are installed on the outer walls at both ends of the second bushing (5). An end cover (8) is installed on the outer wall of one end of the main shaft (2). A third O-ring (21) is sleeved on the outer wall between the end cover (8) and the main shaft (2). Threaded holes (22) are distributed on the inner walls of one end of the end cover (8) and the main shaft (2). A third screw (23) is threadedly connected to the inner wall of one side of the threaded hole (22). A paper tube (3) is sleeved on the outer wall of one side of the second bushing (5).

2. The paper tube locking device of the winding machine according to claim 1, characterized in that, One end outer wall of the second connecting column (9) is fixedly connected with a connecting rod (11).

3. The paper tube locking device of the winding machine according to claim 1, characterized in that, The number of the third screws (23) is four.

4. The winding machine paper tube locking device according to claim 1, characterized in that, One side inner wall of the outer spring (17) is sleeved on the outer walls of the first shaft sleeve (4) and the third shaft sleeve (7).

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